a) This room ought to be equipped with burners that use low sulphur fuel.
B) The temperature of the primary chamber shall be 800 +/- 50 degrees centigrade
3. Primary combustion chamber
B) The room should guarantee a minimum exit temperature of 850 degrees centigrade.
2.4 Secondary Combustion Chamber (After burner)
a) Should be fitted with burners that use low sulphur fuel.
F) Ensure both primary and secondary combustion temperatures are maintained until all waste is completely combusted.
2.5 Particulate Removers
A mechanical particulate collector must be incorporated after secondary combustion chamber for removal of particulate pollutants entrained in the flue gas stream. The particulate collectors may include any of the following or a combination thereof:
D) Ensure that the gas temperature as measured against the inside wall at the secondary chamber rather than in the flame zone isn’t less than 1100 degrees centigrade.
E) All of the emission to the air apart from steam or water vapour must be odourless and totally free of mist, fume and droplets.
6. The stack/chimney.
2. Provision for adherence to OSHA and other statutory requirement relating to Health and Safety of workers during execution of the works covered in this tender.
M) The chimney should be visible to the operator in the feeding area.
E) Ensure the emitted oxygen content of the emitted gases is not less than 11 percent
1. Provide, install and commission an incinerator as provided in the technical specifications
4. Particulate scrubbers
7. Minimum capacity of main chamber = 0.18 cubic metres
B) An audible and visible alarm must be set up to warn the operator once the secondary chamber temperature drops to below the required temperature.
F) A 99.99% destruction and removal efficiency (DRE) for each principal organic hazardous constituent (POHC) in the waste feed in which DRE [ ( Win – Wout) /Win ] x 100 where Win = mass feed rate of the POHC from the waste stream fed into incinerator and Wout = mass emission rate of POHC from the stack prior to the release to the air.
B) Ensure secondary air supply is controlled.
Controlled hygienic mechanical feeding that does not negatively influence the air temperature at the primary and secondary chambers of the incinerator shall be utilized.
1. Overall plant layout
9. Should have a full width counterbalance loading door allowing easy access to the main room for loading and removing ash.
c) Fabric filters
b) Electrostatic precipitators
E) A solid particulate meter/recorder ought to be provided.
8. Burn rate (rate of waste incineration) = a least 20 kg per hour
– Manual technical observation is shipped with the hardware together with all explanations of failures and resolutions
D) Opacity of the smoke shouldn’t exceed 20% seen from 50 metres with naked eyes.
O) The point for measurement of emissions shall be offered.
a) Instrument for determining the interior wall temperature rather than burner flame temperature must be provided for both primary and secondary chambers.
F) Any other instrument which may be considered necessary.
N) The minimum exit velocity should be 10 metres per second and at least two times the surrounding wind speed (Efflux velocity = wind speed x 2) whichever is greater to ensure no down washing of leaving gases.
C) A carbon monoxide and oxygen meter/recorder ought to be provided
d) A smoke density meter/recorder ought to be provided.
C) The secondary chamber gas residence time shall be at least 1 minute at 1050 +/- 50 degrees centigrade with 3% oxygen in the stack gas.
2. Feed chamber/charging
C) Ensure residence time isn’t less than two seconds.
3. Assessment and preparation and structure of a normal incinerator shed with one waste storage room ( see the design )
4. Provision of operation and maintenance manuals and drawings complete with maintenance schedule and directions.
5. Fuel oil storage tank- Moderate steel1500 liters capacity
6. Onsite training for operation and maintenance staff.
l) The chimney should have a minimum height of 10 metres above ground level and clear the highest point of the building by not less than 3 metres for all roofs. The topography and height of adjacent buildings within 50 metres radius ought to be taken into account.
Incinerator manufacturers To allow the Employer undertake conclusive evaluation of the tender, tenderers are requested to submit with their offers the detailed specifications, drawings and catalogues with commissioning and maintenance instructions for the Incinerator they intend to supply, install and commission. Tenderers who fail to comply with this requirement fully shall have their tenders rejected. 2. TECHNICAL SPECIFICATIONS OF THE REQUIRED INCINERATOR
2.1 General Description
The plant must have four distinct sections that demonstrate three fundamentals of turbulence, residence time and temperature retention. The controlled segments may include but not limited to:
Capacity/island: 4000 kg/day; 25000 kg/day; 31000 kg/day; 48000 kg/day
Burning temperature — over 12000C
Two chambers — minimum
Emissions — dioxin and heavy metaly — better then Kyoto protocol
Emission — monitoring system
Waste unloiding — directly from squander track to incinerator
Emissions – dioxin and heavy metaly – better then Kyoto protocol
Emission – monitoring system
Waste unloiding – directly from waste track to incinerator