SPECIFICATIONS OF A DIESEL FIRED INCINERATORS

SPECIFICATIONS OF A DIESEL FIRED INCINERATOR

1.0 INCINERATOR, DIESEL, FIRED.

Specifications

Indicate if item offered complies with each specification.

1.1

General description

 

 

The incinerator should be a modern waste disposal unit, designed to bum medical waste in a clean and environmentally efficient manner. It should employ a temperature based logic control system to provide optimum control of the operating conditions and incorporate a high capacity thermal oxidizing secondary chamber. It should be designed to retain the exhaust gases, for at least 2 seconds to ensure the unit’s effective destruction of the combustion products.

 

For the Supply, installation & commissioning of a Medical Waste Incinerator as detailed below:

i.

Waste type

Health care waste

 

ii.

Waste density

125 to 350Kg/M3

 

iii..

Waste Calorific Value

4000 KCAL/Kg

 

iv.

Moisture content

10-25%

 

v.

 Estimated ash  residue

5-10%

 

vi.

 Nominal capacity

 50Kg/hour batch load

 

vii.

 Secondary chamber

2 seconds @ 850°C

 

viii.

Environmental

NEMA ACT (EMCA) 1999, Waste management regulations, 2006

 

2

Equipment

2.1

Primary Combustion Chamber

 

The primary combustion chamber is the main structure of the incinerator, fabricated from mild steel plate and stiffened with rolled steel sections. It is carried from the floor level on a substantial steel support frame. Internally the shell is lined with calcium silicate insulation and a hot face combination of super duty brickwork or high strength castable.

 

The primary combustion chamber must ensure minimum exit temperature is not less than 850°C.

 

One Manual Load Incinerator comprising:

 

・         Manual Loading door

 

・         Horizontal solid hearth, refractory lined primary combustion chamber. Approximate dimensions 800 mm diameters x 2100mm long

 

・         Full sized bulk load/ash removal door

 

・         1 off diesel-fired ignition burner ― temperature controlled

 

・         1 off combustion air supply fan and distribution system, automatic control

 

・         High capacity secondary combustion chamber with residence time not less than 2 seconds @ >850°C

 

・         1 off diesel-fired afterburner ― temperature controlled

 

・         Control panel ― automatic operation

 

     Temperature indication primary and secondary chambers 0-1200°C

 

     Refractory lined flanged chimney to a height of 10M above ground level

 

Note: The secondary combustion chamber must ensure that the gas temperature as measured against the inside wall in the secondary chamber & not in the flame zone, is not less than 1100°C.

 

2.2

 Throughput

 

50kg/hour at a nominal calorific value of 4,000 kcal/kg and an average bulk density of I20kg/ M3 for general waste and l60kg/ M3 for health care waste.

 

2.3

Ash

 

The waste will be reduced by 90~95% to leave 10 -5% ash

 

2.4

Quality/Environmental Standards

 

NEMA ACT (EMCA) 1999 BS3316

 

2.5

Operating Period

 

Anticipated daily operating period 8 hours

 

Maximum operating period 12 hours

 

2.6

Chamber

 

Should be refractory lined to the following standard; Hearth and lower section of chamber walls

 

2.7

Hot face material

 

Super duty firebrick

 

Limiting continuous service limit 1500°C

 

Thickness 100mm

 

Thermal conductivity 1.3 W/mk

 

2.8

Insulation

 

Calcium silicate

 

Limiting continuous service limit 1000°C

 

Thickness 25mm

 

Thermal conductivity 0.095 W/mk

 

2.9

 Chimney / Stack

 

Should be manufactured from refractory lined mild steel or high quality air-cooled stainless steel. The chimney/stack should have a minimum height of 10 meters above ground level.

 

2.10

 Ignition Burners

 

Fully packaged oil type, complete with electric ignition and flame failure controls, wired with continuous running fan and complete with all valves, fan and motor.

 

・         Maximum rating:        at least 450kW/hour

 

・         Burner:                  arranged for on/off operation

 

・         Maximum consumption: at least 6 litres/hour

 

・         Average consumption:  at least 3 litres/hour

 

2.11

Afterburner

 

Fully packaged oil type, complete with electric ignition and flame failure controls wired with continuous running fan and complete with all valves, fan and motor.

 

Maximum rating:

at least 450kW/hour

 

Burner:

arranged for on/off operation

 

Maximum consumption:

at least 9 litres/hour

 

Average consumption:

at least 4.5 litres/hour

 

2.12

Flue gas treatment

 

Should have particulate remover (scrubbers)

 

2.13

 Electrical Supply

 

Single phase 220/240 V a.c., 50/60 Hz.

 

3

Documentation:

 

Operation manual

2 sets

 

Service/maintenance manual

2 sets

 

4

Certification

 

NEMA (or other recognized) certification

 

5

Capacity to service equipment

 

The agent/supplier shall have adequate facilities, spare parts, consumables and qualified and skilled technical staff.

 

6

Training

 

The agent shall conduct a two days incinerators training after installation & commissioning of the equipment.

 

The agent shall conduct a two days operation & maintenance training to the Biomedical engineering personnel after installation & commissioning of the equipment.