Doubel Combustion Chamber

All Incinerators are Doubel Combustion Chamber with One Fuel Burner Each. After Burner Technology for Completely Combustion and Cleaner World.

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High Temperature Incineration

Temperature Range 800 Degree to 1200 Degree in Combustion Chamber. Temperature Thermocouple Monitor and Controller. High Quality Fire Brick and Refactory Cement.

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There are latest incinerator news like technical, public news, business tender for medical waste incinerator,animal incineration, pet cremation

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Nanjing Clover Medical Technology Co.,Ltd.

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Latest Product

Regular model incinerator for market with burning rate from 10kgs to 500kgs per hour and we always proposal customer send us their require details, like waste material, local site fuel and power supply, incinerator operation time, etc, so we can proposal right model or custom made with different structure or dimensions.
Incinerator Model YD-100 is a middle scale incineration machine for many different usage: for a middle hospital sickbed below 500 units, for all small or big size family pets (like Alaskan Malamute Dog), for community Municipal Solid Waste Incineration, etc. The primary combustion chamber volume is 1200Liters (1.2m3) and use diesel oil or natural gas fuel burner original from Italy.

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A flue chimney, 15,000mm long and 560mm diameter shall be constructed from steel sheet, complete with lagging, damper and rain water protection cone.  The chimney shall be lined with castable grade diatomaceous concrete mixed with high alumina cement in accordance with BS 4076: 1989.

The damper will control the closing of the door to not less than 85%.  The stack is to allow fresh air at the stock’s base so that the flue gases are discharged at not move then 4000 C and that the discharge conforms to the British Clean Air Act, the National Environment Management Agency (NEMA) Act or other relevant acts. .


The sub-contractor shall supply equipment which are suitable for running on a 415V, 3 phase, 50HZ or 240V, single phase, 50HZ electric power supply.


The system shall consist of a bulk oil storage tank, daily tank, transfer hand fuel pump and associated pipe work.  Oil from the bulk storage tank will be delivered to a high level daily tank situated in the incinerator room by use of a transfer hand pump and automatic electric pump.


The tenderer is to submit with his tender a list of recommended initial stock of spares together with their prices.  A part from the burner spares mentioned here below, the spares prices are not to be included in the main summary of prices schedule but is to be separate and are meant to be ordered later if and when it becomes necessary and convenient to the client.  The burner spares whose prices are to be included in the main summary of prices schedule (BQ) are:-

i)     1No. Set of safety controls
ii)    1No. Solenoid valve
iii)    1No. Oil ignition system
iv)    2No. Photo-electric cells

Two sets of operating and maintenance manuals (both for the incinerator and burners) must also be supplied. This include two sets of control schematic diagrams for all the controls and wiring.


The bulk oil storage tank nominal capacity of 10,200 litres and complying with BS 799 part 5: 1975 shall be positioned on three concrete cradles.

The works shall include supply, delivery, assembling, erection, testing, commissioning and setting to work.  The tank is to be of welded mild steel type with a design pressure of  40KN/m2 and storage temperature of 240  C.  It is to be located adjacent to the incinerator and boiler house.

The tank shall be cylindrical with dished end and be constructed of 6mm thick block mild steel plates in accordance with BS 1966.  Number one quality galvanised materials shall not be used.Welded construction parts shall be sprayed.


The tank shall be pressure tested with a total head of water or equivalent, measured from the base of the tank, and equal to 1½ times the sum of:

(i)     The height of the tank and
(ii)    The design head above the top of the tank that is 3.5m of water.

The pressure shall be raised slowly and steadily until the specified test pressure is reached and that pressure shall be maintained for a period long enough to permit a thorough examination to be made to ensure that the tank is sound enough and shows no leaks or undue distortion.  Welded joints shall be radiographed and a certificate issued.  Should any defects be found, they shall be made good and the test procedure repeated until the tank is certified to be sound.  The tests shall be carried out in the presence of the Engineer and subsequently, the sub-contractor will provide the Engineer with the test certificate.

The tank shall then be cleaned externally and provided with rust inhibiting primer before applying 2No. coats of bituminous paint.  The inside shall also be cleaned and purged of any foreign matter before setting to work.

Ladders and platforms shall be thoroughly cleaned and freed from rust and scale and painted with a priming coat of approved paint.

The tank shall be provided with the following:-

(i)    450mm bolted inspection covers with liquid and vapour tight joint made with a gasket of fuel resistant materials.
(ii)    75mm (3”) vent socket screwed B-SP and pipe at the higher end of the tank with an unloading device to prevent the rise in tank pressure above the design pressure.  The vent pipe shall be free from bends and shall have a continuous rise while being as short as convenient.  It shall terminate in open air in a position where it cannot be tampered with.  The open end shall be turned down and fitted with an open mesh wire cage.
(iii)    65mm diameter filling pipe with hose coupling connection
(iv)    50mm diameter gauging connection with lockable cap.
(v)     50mm diameter supply pipe
(vi)     25mm diameter water drain-off value

The tenderer shall supply hydrostatic oil contents gauge (level indicator) or a
properly calibrated stick (of dip tape) and access ladder to the top of the tank.

The filling pipe shall be extended inside the tank to within 150mm of tank bottom,
complete with anti-siphoning device.

The following information shall be permanently and clearly marked on the tank on the
centre line near the outlet connection.

•    Gross capacity in litres
•    Test pressure
•    Date of test
•    Maximum allowable working pressure
•    Manufacturer’s name of trade mark
•    Year of manufacture
•    The number of British standard and type of tank

The tank shall be installed with a 25mm fall towards the water drain-off tapping point.  The supply socket shall be extended inside the tank to prevent ingress of water in the supply line.  The main contractor shall construct tank supports and bund walls to detail drawings produced by the sub-contractor.  A valued drain off from the lowest part of the tank shall be provided complete with tail pipe and a provision for hose connection.



A semi rotary hand pump shall be provided for filling the day storage tank from the oil drum.  It shall be installed complete with all the necessary plumbing fittings and accessories.


A daily storage tank of nominal capacity 1,800Litres shall be mounted at 2.5 metre high level in the incinerator room.   Tank shall be manufactured from 6mm thick pressed steel plates of 1220mm x 1220mm black mild steel sheet, complete with bolted cover and adequate venting.  The tank shall conform to BS 799 part 5 1995 and be provided with a contents sight tube. The tank shall be lagged with 50mm thick fibre glass insulation of 0.4W/m2 thermal conductivity and finished with 20SWG galvanized sheets cladding.

The tank shall be tested for any leaks of which if any is detected will be made good before the tank is painted externally with rust inhibiting paint. Tank to be securely bolted.


All pipework used in the oil storage systems shall be to B.S. 1387 heavy grade.  Joints shall be screwed, and sufficient unions must be provided to allow easy dismantling the equipment.

A 25mm diameter fire valve of the quick action lever operated dead weight type shall be installed, in the oil flow line.  This shall be held in the open position by a light gauge steel cable attached to a fusible link.  The fusible link shall be mounted directly over the burner.  The warm burner oil feed pipe from the high level day tank shall be heated by an electric tracing tape properly wrapped around the pipe.  The pipe shall then be insulated with 25mm thick fibre glass insulation and finished with gauge 22swg galvanized steel sheet.

The supply pipe from the bulk oil storage tank to the high level day has been installed by others but the tenderer shall allow for connection to the high level day tank.  The tenderer shall also supply and install high capacity strainers along the supply pipe and the burner feed pipe.


The variety and type of supports shall be kept to a minimum and their design shall be such as to facilitate guide and secure fixing to match concrete masonry or wood.

Consideration shall be given when designing supports to the maintenance of desired pipe fall and the restraining of pipe movements to a longitudinal axial direction only.

The sub-contractor shall supply and install all steel work forming part of pipe support assemblies and shall be responsible for making good any damage to builders work associated with builders work installation.

Pipe runs shall be secured by clips connected to pipe hangers, wall brackets or trapeze type supports.  ‘U’ bolts shall not be used for clips without prior approval of the Engineer.

The sub-contractor shall submit his entire proposal for the pipe supports to the Engineer for approval before any erection work commences.


All wiring between items, plant and controls shall be executed by the tenderer. The tenderer shall provide adequate supervision to ensure that electrical connections are correctly made to all items of equipment and controls supplied by him, all to the Project Manager’s / Engineer’s satisfaction.



The tenderer shall test and commission the incinerator in the presence of the Engineer.The tenderer shall also provide sufficient oil to last at least two (2) hours.  The tenderer shall test and commission the incinerator in the presence of the Engineer and verify that the incinerator is functioning according to the specifications laid here-in and in the catalogues and manuals from the suppliers of he incinerator.The incinerator performance test shall be carried out in accordance to BS3316: part 4:1987.Should any defect be detected, it shall be rectified and the testing process repeated to the Project Manager’s satisfaction.


Proceed and procure and install as below;

Print fire instruction on the Perspex plate, 3mm thick with White Colour
Background measuring 510mm lengthx380mm width as follows;

castable high quality refractory lining and incinerator shell

The incinerator shall have chimney, castable high quality refractory lining and incinerator shell, perforated blind for the primary and secondary combustion chambers and air circulation system.

The incinerator shall also have the following:-
•    Ash door
•    Primary and secondary burners and fans
•    Temperature indicator devices
•    Electrical wiring from the local isolator
•    FD fan
•    Air receiver
•    Air ductwork complete with air dampers
•    Pressure and temperature gauges
•    Fully wired control panel

The bulk oil storage tank shall have a capacity of 10,200 litres and be placed at 0.5m above ground on a firm concrete cradle, complete with the following:-
•    Drain pipe
•    Vent pipe
•    Oil level indicator
•    Access ladder to the top of the tank
•    Coating of the tank with at least 2No. coats of bituminous paint
•    Manhole cover complete with a gasket
•    Dip stick
•    Any other necessary accessory.


The daily oil tank of capacity 1,800 litres and size 1220x1220x1220mm pressed steel tank high shall be placed 2.5 metres high above finished floor level on a steel stand, firmly secured on the ground and the steel members to be bolted.  The daily oil tank shall have an oil level indicator, access manhole, washout, overflow, inlet and outlets connections and gate valves.

The interconnecting pipe of 50mm diameter between the two tanks shall be class ‘C’ black mild steel pipe, complete with a 50mm diameter strainer.  The burner fuel supply pipe from the daily tank shall be a 25mm diameter class ‘C’ black mild steel.

The following shall also be supplied
•    25mm diameter fire valve
•    25mm diameter high capacity strainer
•    heating tap along the burner supply pipe, 25mm diameter

The burner supply pipe shall have 25mm thick fibre glass insulation and finished with gauge 20SWG galvanised steel sheet.

The tenderer shall provide all the necessary controls for proper safety and satisfactory working of the installation.

1.1.1    BURNER

The burner shall be suitable for 35 sec redwood No. 1 scale fuel oil.  It shall be robust in construction and be manufactured in cast iron or other suitable materials complete with mounting plates.  It must be easily mountable and demountable for ease of cleaning and maintenance.  The burner shall have an adequate supply of oil which will readily ignite and burn in a safe manner.  Adequate provision shall be provided to prevent any solid matter in the oil, or any matter that may separate out from the oil from damaging any components or chocking of any orifices or valves.  The free filtering area should be sufficient to ensure that the filter does not need dismantling for cleaning more often than once a year. The burner shall have flame supervision by photo-electric cell with synchronous sequence controller for automatic start up, running and shut-down of the burner.

The burner shall have all the necessary controls e.g.Solenoid valves, ignition controls, photo electric cell fuel safety controls, low pressure fuel supply cut-off etc.

The burner shall conform to BS 799: part 3 and 6 1981 or any other relevant British standard.The burner shall be as NU-WAY models or equal and approved.

1.1.2    CONTROLS

The incinerator shall operate in an automatic manner with all the necessary controls.  These controls are to include safety elements such as flame failure unit, pilot lamps, fuses, starters, overload contactors, ON and OFF switches for burners and fans, combustion chamber temperature indicators for primary and secondary chambers etc.

i)     Electric ignition switch ‘ON’ before the oil is supplied
ii)    Delayed return to re-start position to allow purging
iii)    Re-start after temporary electric supply failure
iv)    Positive safety lock-out in case of flame failure from whatever cause.
v)    Red signal light on control panel to indicate safety lock out
vi)    Photo electric protective cell as flame failure device.

The controls shall be mounted on suitable control panel to be installed in a position easy to read and control from the charging door side of the incinerator.

The control panel shall be fabricated from anodized, 16SWG, mild steel sheet.

Biological and Pathological Waste Incinerator

Biological and Pathological Waste Incinerator is defined as human and animal remains, such as organs, animal carcasses, and solid organic wastes from hospitals, laboratories, slaughterhouses, animal pounds, and similar sources. This type of waste contains up to 85 percent moisture and not more than 5 percent incombustible solids, and has a heating value as low as 2330 kJ/kg 1,000 BTU per pound as fired.


•Site Work
Provide site work, structural foundations, and floor slabs as required.

•Roof Loads
Design roof purloins and beams for dead load plus an additional 0.24 kPa 5 psf uniformly distributed load and an additional 22.4 kN 5000 lb roving concentrated load plus drift factor where applicable]. Determine wind uplift forces in accordance with ASCE/SEI 7-05 Section 6 using a 100-year recurrence interval and conditions.

•Floor Loads
Provide operating floors, stairs and access platforms for operation and maintenance, designed for
4.79 kPa 100 psf live load plus dead load.
Design equipment platforms for 7.18 kPa 150 psf live load plus a concentrated load of equipment weight at installed location, plus dead load.

1.3.4 Lateral Loads
Include wind and seismic loading in the design exposure SEISMIC PROTECTION FOR MECHANICAL EQUIPMENT
Furnish equipment meeting the noise criteria specified herein through equipment design, acoustic insulation, use of inlet silencers, or other means provided under this contract.

1.3.6 Controls and Instrumentation
a.Include in control equipment and instruments, burners and fan controls, time clocks, relays, operating switches, indicating lights, gauges, motor starters, fuses, alarms, and circuit elements of the control system, and other controls and instruments necessary for unit operation, with system in accordance with the FM APP GUIDE.

b.Mount the controls and instruments on one or more free-standing control panels conveniently located to the incinerator, and placed to allow operating personnel effectively monitor incinerator operations.
Provide control system with proportioning control of the primary air supply and fuel supply to the secondary burner], and temperature indicator controllers or other indicators providing a visual indication for safe loading of the incinerator and excessive high temperature conditions which may require control by the operator.
Interlock automatic control circuit systems and manual switches to prevent hazardous conditions or the discharge of excessive amounts of air pollutants.

•Control Panel
Provide a sheet steel, weather tight panel, conforming to UL 50. Provide
NEMA 4 control panels for outdoor installations with electric strip heaters for condensation control. Flush mount all controls, instruments, and other equipment at the factory and test the assembly prior to shipment. Furnish a lock and 2 keys. All controls and instruments shall be identified with nameplates.

•Draft Gauges
Provide draft gauges conforming to ASME B40.100 with a diaphragm or bellows actuating system, a circular scale, a zero adjustment screw, and suitable shutoff cocks.

•Pressure Gauges
Provide pressure gauges conforming to ASME B40.100, pressure detecting class, single Bourdon tube style, suitable for detecting air pressure.

Provide sensors conforming to ISA MC96.1, Type K, in the combustion chamber or as otherwise directed, with a thermocouple suitable for continuous operation and control at temperatures up to 1260 degrees C 2300 degrees F accurate to 0.75 percent, of sufficient length to be inserted 150 mm 6 inches into the furnace. Provide the thermocouple with an adjustable flange and a high- temperature metal alloy, closed-end, protecting tube suitable for insertion into the furnace without support of the projecting end. Supply thirty meters one hundred feet of 1.52 mm 16- gauge compensating lead wire with a weatherproof braid for connecting the thermocouple to the instrument, so that the installed unit indicates gas passage temperatures and controls burner operation.

1.3.7 Operating Tools
Provide and locate as indicated, operating and firing tools, such as shovel or coal scoop, hoe, rake, slice bar with metal handles, regularly used for firing and cleaning incinerators, and a firing tool rack. Provide steel rack, including hooks and other appropriate means for storing the tools in a neat manner.

Owner and/or his representative approval are required for submittals. SUBMITTAL PROCEDURES:
Shop Drawings: Detail Installation Drawings
Product Data: Incinerator Controls and instrumentation Test Reports: Instrument readings.
Performance: Adjusting and Testing.
Certificates: Incinerator Operation and Maintenance Data Operating and Maintenance Instructions: Data Package.


2.10.1Asbestos Prohibition
Asbestos and asbestos-containing products are prohibited.

2.10.2Detail Installation Drawings
Submit detail installation drawings for the incinerator, foundation, stack, waste feed system, fuel burning equipment, ash removal system, flue gas cleaning system, and controls. Include in detail drawings all equipment settings and connections, complete electrical wiring, controls, and connection diagrams and indicate clearances required for maintenance and operation.

Perform all welding in accordance with ASME BPVC SEC IX and AWS D1.1/D1.1M by welders certified to have passed qualification tests using procedures covered in AWS B2.1/B2.1M.

2.10.4Special Tools
Furnish all special tools for assembly, adjustment, setting, or maintenance of equipment specified as standard accessories.

Protect all equipment delivered and placed in storage from the weather, humidity and temperature variations, dirt and dust, or other contaminants.

Submit spare parts data for each different item of material and equipment specified, after approval of detail drawings, Include a complete list of parts and supplies, with current unit prices and source of supply, and a list of the spare parts recommended by the manufacturer.


Provide materials and equipment which are the standard products of a manufacturer regularly engaged in the manufacture of the product and that essentially duplicate items that have been in satisfactory use at least 2 years prior to bid opening.
a.Submit manufacturer’s product data, catalog cuts, illustrations, schedules, performance charts, instructions, brochures, diagrams, sound level data, calculations for gas retention times, combustion and air emissions data, and other information to verify compliance with requirements of the contract documents.
b.Provide each major component of equipment with the manufacturer’s name, address, type or style, model or serial number, and catalog number on a plate secured to the equipment
c.Enclose or guard belts, pulleys, chains, gears, couplings, projecting setscrews, keys, and other rotating parts located where any person may come in close proximity thereto. Guard and cover high-temperature equipment and piping located where they could endanger personnel or create a fire hazard with insulation of type specified for service.
d.Provide items such as a catwalk, stair, ladder, and guardrail where required.

NOTE: Indicate the type and class of motor enclosure depending on the environment in which the motor is to be used.
Provide electrical motor-driven equipment as specified, complete with motors conforming to NEMA MG 1, motor starters, and controls, with enclosures as indicated. Provide electrical equipment, including motors and wiring with electrical characteristics as indicated or specified. Provide motor starters complete with thermal overload protection and other appurtenances
necessary for the motor control specified, and of sufficient size to drive the equipment at the
specified capacity without exceeding the nameplate rating of the motor. Provide manual or automatic control, protective or signal devices required for the operation specified, and any control wiring required for controls and devices specified but not shown.

NOTE: The incinerators should be capable of burning medical waste. The composition of Type 4 waste as indicated in the following table:


Type    Noncombustible Solids (Max % Content
by Weight)
Moisture Content (MAX)%    Heating Value J/kg
(BTU Per Pound
(Highly Combustible)
19,771,000 (8,500)

85    2,326,000 (1,000)

The medical waste to be disposed in the incinerator is a mixture of paper, plastics, Type 4 waste, etc., and is of a widely varying nature with a Btu content which may well exceed the usually reported value of 2,326,000 J/kg (1000 Btu per pound). Prior to developing final design of the incinerator, detailed waste classification should be made, amounts of glass, metal, paper, plastics, organic, rubber, cloth, wood, moisture, etc., in the waste and the variable joule (Btu) content.  The waste stream at each installation must be analyzed and the information should be utilized for the final design.
Provide an incinerator with a solid hearth in the primary combustion chamber where partial burning and conversion of the combustible organic matter occurs, and a secondary combustion chamber that consumes the combustible gases and entrained combustible particles, with gas-tight shell construction. Provide an incinerator suitable for indoor installation including totally enclosed electric motors, and corrosion and moisture protection, and equipped for mechanical charging and operation. Incinerator shall be a complete package-type unit, factory fabricated and assembled operating under negative air pressure and ready for attachment of all utility connections.

2.6.1Type of Waste
Provide an incinerator capable of burning typical medical waste including paper, plastics of various kinds, and a small fraction of Type 4 (Pathological) waste.

Provide incinerator with a capacity of not less than [75] kg per hour, based on operating the incinerator no more than 8 hours continuously per day, and to be suitable for burning medical waste parts which have a water content as high as 85 percent by weight.

Provide furnace with an inside volume, exclusive of the space occupied by the refractory hearths and walls, of not less than 2 cubic meters with a primary combustion chamber volume above the burning hearth of not less than 1.5 cubic meters, Provide a complete waste burning system including combustion air fan, primary and secondary burners, air distribution and burner controls, ducts, breeching, stack, bottom ash conveyor and collection, feed rams, fire tube water tube, air compressors, slurry pumps, water pumps, fly ash collection system.


2.5.8Weight Reduction

Provide an incinerator capable of reducing waste to an ash not to exceed 5 percent of the total combustible charges when tested as specified.

2.5.9Stack Discharge

Provide pollution control equipment to meet all applicable emission regulations and utilize the most stringent requirements.
Typical values are as follows or less:
Carbon Monoxide (CO): 50 ppmv, 12-hour average as measured by a Continuous Emissions Monitoring System (CEMS)
Particulate Matter: 0.013 gr/dscf (30 mg/dscm) as measured by EPA Reference Method 5; Opacity: 5 percent, 3-minute average as measured by a CEMS;
Sulphur Dioxide (SO2): 45 ppmv, 12-hour average as measured by a CEMS;
Nitrogen Oxides (NOx): 210 ppmv, 12-hour average as measured by EPA Reference Method 7 Hydrogen Chloride (HCL): 42 ppmv, or 97 percent reduction, 9-hour average as measured by EPA Reference Method 26
Total Hydrocarbons: 70 ppmv, 1-hour average as measured by EPA Reference Method 25 Mercury: 210 gr/106dscf (0.47 mg/dscm) or 85 percent reduction, 12-hour average as measured by EPA Reference Method 29;
Lead: 44 gr/106dscf (0.10 mg/dscm), 12-hour average as measured by EPA Reference Method 29
Cadmium: 22 gr/106dscf (0.05 mg/dscm), 12-hour average as measured by EPA Reference Method 29;
Dioxin/Furans: 35 gr/109dscf (1.9 ng/dscm) toxic equivalency of 2, 3, 7, 8-TCDD, 12-hour average as measured by EPA Reference Method 23.
Correct all emission limits to 7 percent oxygen, dry basis. The following definitions were used above:
1-  Parts per million by volume (ppmv). 2-  Dry standard cubic feet (dscf);
3-  dry standard cubic meters (dscm); 4-  grams (gr);
5-  milligrams (mg);

Noise level at 305 mm 1 foot from any incinerator component shall not exceed 85 dBA. Provide sound dampening devices on equipment.


2.5.7Primary Chamber
Construct the primary chamber with a steel casing supported by a steel frame, and provide with insulation and refractory. Make the casing with 5 mm sheet steel minimum, conforming to ASTM A1011/A1011M and reinforced to withstand internal pressures without deflection or damage to refractory or other components of the incinerator. Construct the frame and all reinforcing members of steel conforming to ASTM A36/A36M. Provide a free-standing frame capable of supporting the weight of all components of the incinerator, including doors, burners, breeching, stack connections, and appurtenant assemblies without binding or warping. Make the frame and casing of all welded construction, completed and erected prior to installation of the

refractory and insulation. Perform all welding in accordance with ASME BPVC SEC IX and AWS D1.1/D1.1M. Provide all access doors and parts with seals to prevent emission of smoke or admission of significant amounts of air during incinerator operation, and a primary chamber with no openings which would permit leakage of waste fluids.

2.5.8Secondary Chamber
Provide a secondary chamber with an exterior casing not less than 5 mm conforming to ASTM A1011/A1011M, with insulation and refractory lining of the same class, type, and thickness required for walls in the primary chamber. Allow for a minimum dwell time of 0.8 seconds for any condition within normal operating limits.

Provide insulation conforming to ASTM C 612, Class 5 and designed to be used with masonry or reinforced concrete or noncombustible material, with a fire resistant rating of not less than 3 hours, to prevent damage to the foundation from excessive heat. As a minimum, provide insulation thickness to limit the temperature of the outer casing to 66 degrees C 150 degrees F maximum in an ambient temperature of 21 degrees C 70 degrees F when the unit is operating at full-rated capacity. Use insulating cement conforming to ASTM C 195 or ASTM C 196.

Provide heat-resistant plastic super-duty fireclay refractory conforming to ASTM C 27. The minimum thickness of plastic or cast able refractory is 110 mm 4 for walls and 110 for hearths. Attach refractory walls to the casing with alloy steel or refractory anchors to form a monolithic structure which will resist heat and support the walls with a safety factor of 4. Prevent bulging and destruction of refractory due to heat stress by reinforcing, expansion joints, ties, and anchors.

2.5.11Exterior Walls
Provide 4 mm sheet steel walls reinforced with steel framing and provided with door frames and mounted on structural steel skids.

Provide an abrasion resistant refractory hearth constructed of heat-resistant, thermal-insulating clay conforming to ASTM C 401, Class R plastic or cast able type, high-duty class, capable of supporting not less than twice the hourly burning rate and preventing leakage of waste fluids.

a.Provide doors for stoking, cleanout, and charging areas, with securely attached door frames. Construct doors and frames of steel conforming to ASTM A1011/A1011M. Line doors, exposed to flame or direct heat of combustion gases, with the same type and thickness of refractory and insulation used in the combustion chamber.
b.Secure refractory to the doors so as to prevent sagging. Taper refractory edges to clear door frames during movement of swinging doors. Weld alloy steel hooked bars to door cover to anchor the refractory, to enable safe operation by one person, and maintaining temperature of door handles to permit operation of doors without gloves or other protective devices.

c.Interlock charging doors with primary burners and air supply so that burner ignition shuts off and under fire air dampers close when doors open. Gasket door closure should be with non- asbestos packing.
d.Provide counter-weights for vertically operated doors requiring a maximum manual operating force of 133 N 30 pounds maximum. Provide guillotine-type doors which lift completely off the seals to affect opening. Provide full-swing-type doors with an integral smaller feed door having a minimum rectangular clear opening of 610 by 610 mm 24 by 24 inches or a minimum circular clear opening of 762 mm 30 inches diameter.] Include hasps or brackets for doors to permit locking.

•Stoking and Cleanout Doors. Provide tight fitting cleanout doors which allow access for total cleanout, visual inspection of the entire interior of the incinerator, and prevent leakage of waste fluids.

•Mechanical-Charging Doors
Provide inner and outer guillotine, or swing or automatic sliding, mechanical- charging doors type, with the inner or charging door opening with operation of the charger. Interlock the inner and outer doors to prevent simultaneous opening during incinerator operation. Insulate and line the combustion chamber door with refractory material. Construct the outer door of the same materials as the exterior casing of the incinerator. Doors shall be provided with means for manual operation.

2.4.1Observation Ports
Provide two observation ports, 75 mm 3 inches in diameter, on the charging door for viewing the primary combustion chamber during operation.
Construct observation ports of black steel or cast-iron tube or duct having a minimum thickness of 3.42 mm 10 gauges and provided with heat-resistant glass cover, or an angular steel frame and closure plate with handle, for operation without gloves or other protective devices. Extend the tube or duct from the exterior of the casing to not less than one-half the thickness of the refractory lining, and weld the frame to the casing, to provide a gas-tight refractory opening.

Provide a controller actuated refractory lined damper which regulates secondary, under fire, and over fire air, constructed of steel conforming to ASTM A1011/A1011M, not less than 1.52 mm 16-gauge thick, operating without noise or flutter, and electric motor.

2.4.3Bypass Dampers
Construct bypass dampers to provide a leakage rate of less than 1 percent at 1.5 times the maximum operating pressure.

2.4.4Test Holes and Test Groups
Indicate and clearly identify an instrument test group near every thermocouple well to connect portable equipment to verify installed equipment.
Provide test holes, near the test group shown on the contract drawings, and fit with standard weight, 50 mm 2 inch diameter, black steel pipe welded to the casing. Extend the sleeve from the exterior of the casing to not less than one-half the thickness of the refractory lining. Form the

refractory opening from the end of the pipe sleeve to the interior wall surface to shield the end of the sleeve from reflected heat, and fit with a brass screw cap. Submit a copy of the Instrument Readings to the Contracting Officer.


Provide a complete flue gas cleaning system (FGC) consisting of a Powdered activated carbon injection system, and a acid gas scrubber system capable of continuous operation operation compatible with the incineration capacity and schedule specified.

2.3.1System Components
Provide each scrubber system with bulk storage silos, unloading facilities for trucks, dust control filters, mixing equipment, slurry tanks, pumps, compressors, induced draft fans, and all piping and valves necessary to provide a complete and operating system.

2.3.2Product Storage Capacity
Provide bulk storage capacity for all required products to sustain a minimum operating period of one week between deliveries.


Provide access openings at strategic locations for inspection, cleaning, and maintenance, all being a gas tight quick-opening type. Elevate the adsorbers to permit 2130 mm 7 feet access under the lowest point which would collect particulates. Locate an access door at this lowest point to permit removal of accumulated particulate; designed to open with an accumulation of material above it.

Construct adsorber with at least 4.76 mm 3/16 inch thick steel plate, ASTM A36/A36M or ASTM A283/A283M, grades B, C, or D. Space external stiffeners as required to provide support for the vessel skin. Seal weld all structurally welded seams. Design joints to be assembled air and water tight. Design adsorber for a gas pressure of plus or minus 635 mm 25 inch water gage, or as required by the system operation, whichever is greater, and with any panel deflection not exceeding L/240.

•Gas Flow
Provide the gas inlet to each module with internal deflector plates designed to provide uniform gas distribution and velocities through the unit.

2.3.4Product Handling and Preparation System Provide a complete system to receive, store, and supply product to the spray-dry adsorbers, with the capability of supplying sufficient product for the incinerator operating at 120 percent of full load. Include in the system, but do not limit to, product storage silo complete with vibrating bin discharger, flexible connections, gravimetric feeders, attrition slaker, [lime] slurry and water Pumps, slaked product storage tank, and agitators.

2.3.5Powdered Activated Carbon
Provide powdered activated carbons (PAC) specifically made for the removal of mercury, dioxins, and furans with a high percentage of pore sizes in the 20 to 50 angstrom range, with PAC completely devolatilized.

2.3.6Pebble Quick Lime Analysis
Provide flue gas cleaning equipment capable of meeting emission requirements specified using lime

2.8.2 Burners
a.Provide LPG burners for the primary and secondary combustion chambers, with each burner as a complete assembly including fuel and control systems, and accessories.
Provide a primary burner with an input capacity capable for maintaining a minimum continuous temperature in the secondary chamber of 871 degrees C (1600 degrees F), and a minimum continuous temperature of 760 degrees C (1400 degrees F) at the roof near the exit of the primary chamber.

b.Provide electrically spark-ignited burners regulated by a variable set point indicator-controller adjustable from minus zero to 1371 degrees C (minus 17 to 2500 degrees F) to operate within the temperature limits recommended by the manufacturer.
c.Provide controllers actuated by a thermocouple or shielded bimetallic sensor, with the mounting, flame shape, and characteristics of each burner suitable for the incinerator chamber in which the burner is installed. Flame impingement on the incinerator wall is not permitted.
d.Provide each burner with FM APP GUIDE listed and approved flame
failure protection. Sight the flame safeguard sensor to detect only the burner flame for which it is designed, with burners which are easily moved out of firing position for inspection, cleaning, adjustment, and maintenance. Locate thermocouples in the primary and secondary chamber, suitable for a maximum temperature of 1260 degrees C 2300 degrees F. Provide a continuous secondary burner which modulates from high to low fire, based on the temperature of the secondary chamber. Provide an on/off firing burner in the primary chamber.

Important: minimum height of the chimney should less than 15 meter measured from roof of top roof of incinerator room and not less than 5 meter higher than any building in distance of 1km from incinerator room, also the outlet velocity of flue gases should not less than 7 Meter per second
1Provide a sectional, circular cross section exhaust stack of the type, size, and number of sections in accordance with the requirements of the stack and refractory manufacturer to adequately support the refractory lining, permit expansion, and prevent cracking of the refractory; conforming to NFPA 211. Secure the refractory to the casing by steel anchors.
2Attach a corrosion-resistant steel spark arrestor fabricated of 1.21 mm 18-gauge, 13 mm 1/2 inch mesh wire screen to the top of the stack. Provide a corrosion-resistant steel weather cap. The

temperature of the casing shall not exceed 50 degrees C in an ambient temperature of 21 degrees C 70 degrees F. Provide adequate support for any stack installed on top of the incinerator without placing any of the load on the refractory walls of the incinerator.

Provide connectors to connect the incinerator to the stack unless the stack is attached directly to the incinerator, in accordance with NFPA 211.
Locate the connector at a minimum clear vertical distance of 2450 mm 8 feet above the floor.

•Draft Equipment
Provide equipment which supplies the correct amount of air to permit complete controlled combustion. Include forced draft fans, draft gauges, dampers, damper actuators, linkage, and appurtenances necessary to maintain a negative draft in primary chamber in order to provide optimum performance at all operating rates.

•Air Ducts
Introduce combustion under fire air to the primary chamber below the waste material through ducts located along the side of the hearth]. Control over fire air with automatically controlled air intake ports in the back wall, for completing combustion of combustible materials into gases, or for reducing operating temperatures.
Provide dampers to set the air for the proper burning of the waste materials. Size ducts to minimize pressure drops, constructed of sheet steel conforming to ASTM A1011/A1011M, with all seams and connections air tight.

Provide a fan capable of delivering sufficient air for burners and not less than 150% than the required by manufacturer.
The centrifugal type with forward-curved blades, and statically and dynamically balanced fan wheels Comply with the fan standards of AMCA 99, and CID A-A-59222, centrifugal furnace fans, rated for flow rate, pressure, power, speed of rotation, and efficiency in accordance with AMCA 210. Provide induced draft fans, where required, designed for handling hot flue gas at the maximum outlet temperature of the incinerator.

2.8.7 Ash Removal
Provide the unit with provisions for automatic removal of the ash through the cleanout door upon completion of the burnout and cool-down cycles. Ash removal shall be as indicated for use with portable containers.


Clean the inner surfaces of the outer casing of the incinerator, the exterior surfaces of the outer casing, the control panel, and piping, except corrosion-resistant steel, to base metal for removal of oil and rust before primer is applied at the factory.

1.4.2Factory Painting
Factory paint equipment and component items with the manufacturer’s standard finish. Provide a weather resistant finish on all items located outside the building.


After becoming familiar with all details of the work, verify dimensions in the field, and advise the Contracting Officer of any discrepancy before performing the work.

Provide the services of the manufacturer’s representative experienced in the installation, adjustment, and operation of the equipment specified, who will supervise the installing, adjusting, and commissioning and compliance testing of the equipment.

Install equipment and material as indicated and in accordance with manufacturer’s written instructions and NFPA 82, with combustion air supply and ventilation in accordance with NFPA 31 or NFPA 54 as applicable.

a.Construct the incinerator foundation using CAST-IN-PLACE CONCRETE. Extend the foundation a minimum of 1 m 3 feet beyond the incinerator on 3 sides and not less than 2.5 m 8 feet on the side where the ashes are removed. Install the incinerator in accordance with manufacturer’s written instructions.
b.Make proper provision for expansion and contraction between incinerator foundation and floor; pack the joint with suitable non-asbestos rope and fill with suitable compound that will not become soft at a temperature of 40 degrees C 100 degrees F.
c.Provide incinerator supports which permit free expansion and contraction of each portion of the incinerator without placing undue stress on any part of the incinerator or setting. Set anchor bolts accurately, and of adequate length to install the incinerator. When embedded in concrete, provide anchor bolts with plates welded on the head and protect against damage until the equipment is installed.

1.5.7Stack Support
NOTE: Indicate design wind force that the stack will have to withstand. Also include in structural design seismic resistance, and coordinate with subparagraph Lateral Loads under paragraph
Provide stack support in accordance with NFPA 82 and NFPA 211, as applicable. Provide vertical and lateral supports for exterior chimneys to withstand wind forces.


MEDICAL WASTE INCINERATORS for furnishing, installing, adjusting, and testing automatically controlled air medical waste incinerators having a capacity to burn 75 Kg/hour waste materials of biological and pathological nature.

The process of incineration provides the advantage of volume reduction as well as the ability to dispose of recognizable waste and sharps. On site incinerators provide a quick and easy way of disposing medical waste. This is the most widely accepted and feasible method of managing highly infectious waste.
The incinerator will be of the controlled air type, designed for (6-8) hour-day operations and rated at 75 kg per hour. The incinerator plant will include the following:
3Continuous loading using hydraulic ram feeder o Burners and fuel system
o Fans
o Pumps
o Controls and Instrumentation o Chimney and flue connections
o Incinerator loader for loading hoppers or carts o Ash handling equipment
41 year spare parts
5Waste weighing equipment
6Wheeled 2.0m3 waste storage hoppers (number to be decided by hospital managers)
7Incinerator loader
8Incinerator building, including fire safety equipment
9Platform and portholes designed to USEPA standards to facilitate stack testing.

The publications listed below form a part of this specification to the extent referenced. The publications are referred to within the text by the basic designation only.
ASME INTERNATIONAL (ASME) Sheet, Cold-Rolled, Carbon, Structural,
High-Strength Low-Alloy and High-Strength Low-Alloy with Improved Formability, Solution Hardened, and Bake Hardened
SECTION 11 82 21 Page 6
ASTM A53/A53M (2010) Standard Specification for Pipe,
Steel, Black and Hot-Dipped, Zinc-Coated, Welded and Seamless ASTM A653/A653M (2010) Standard Specification for Steel

Sheet, Zinc-Coated (Galvanized) or Zinc-Iron Alloy-Coated (Gal annealed) by Hot-Dip Process FM GLOBAL (FM)

health care risk waste and general waste incinerator

We strive for a sustainable development therefore we are adopting a sustainable medical waste management system, which includes building a modern sustainable incinerator that will not only cater for our facility but also for the other facilities in the larger area of the region. We are aware that we need a  modern incinerator that will not burden the local people or the local environment even more. There are several different types of incinerators available (especially recommended to be built with local materials), which are cheap to build but are more harmful to people and environment.slaughterhouse in Afghanistan in ministry of agriculture. Each plant has capacity of 100 cattle and 500 sheep per day.burn dead chicken of weight 50 kg.4.Waste  type :   health care risk waste and general waste
5. Chimney stack:
Chimney : 3.5mm mild steel
Height from base :11m and if there are buildings within
30m of the incinerator, chimney must extend at least 3m
above the apexes of all the roof of such buildings
Diameter of chimney at top :430mm
Weight of stack:  ±500 Kg
Case and stack be painted with 400⁰C heat resistant Black paint
1st  chamber 850⁰C  – 900⁰C
2nd  chamber 1000⁰C
7.Variable speed combustion air blowers
8.Primary chamber volume  ±1.05 cubic metres
9.Mixing chamber volume  ±0.30 cubic metres
10.Settling chamber volume ±0.89 cubic metres
11.Weight excluding chimney  ±6.400Kg at manufacture
12..Firing tools supplied :Hoe ,poker and rake
Length                   ±2125mm
Width                    ±1890mm
Height                   ±2125mm
Extra width for burners ± 1000mm
14.Loading door opening 610 *540mm
15.Hearth area  ±1.19square metres
16.Description of grate/hearth :A full hearth to be supplied to prevent contaminated
17.Liquids from flowing into ash pit without being incinerated
18.Compliance with South African Atmospheric Pollution Prevention Act No.45 of
1965 or equivalent air pollution standards
19.Documents to be supplied :Operations and maintenance manual and standard
operating procedures (SOPs)
20. Emission controls:
heated refractory screen
Low velocity grit settling chamber
Stainless steel arrester screen

21.Refractory material :alumina content> 49% and thickness average 102mm
22.Bake out : to be done over 2-3 days
23.Materials of constructions
Case :5mm mild steel
Bracing: heavy angle and channel
Hearth: 1550 ⁰C
Ashing door: high grade cast iron
Loading door 5mm mild steel lined with 1550 ⁰C castable general purpose high strength, high abrasion resistant monolithic refractory concrete.
Incinerator walls and roof: 1550 ⁰C castable monolithic refractory

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