Technical background of hazardous waste treatment
1) the current traditional treatment and disposal technology and its defects
at present, the most common method to dispose hazardous waste is fuel burning technology, including fuel pyrolysis furnace, rotary furnace, etc. the purpose is to burn waste as much as possible and make it burned
the burned substance becomes harmless and reduces volume to the maximum extent. the advantages are that the reduction effect is good (the volume of the residue after incineration is reduced by more than 90%, and the weight is reduced by 80%
the disposal cost is low, but the temperature of ordinary incinerator is between 800 C and 1100 C, and hazardous waste can not be fully burned and decomposed in the furnace, but it is burned
the dust discharged from the residual ashes after burning contains heavy metal or dioxin, which greatly aggravates the tail gas disposal of the system
Workload. the secondary pollution caused by traditional incineration technology has become a major difficulty in environmental protection and pollution control.
2) Advanced disposal technology - heat plasma treatment technology
the high-risk waste is pyrolysis and pyrolysis by plasma jet. the temperature of plasma jet can reach 3000 C ~ 10000 C. Because
the advantages of plasma high temperature, energy concentration and no secondary pollution have been actively developed countries such as the United States, Russia, Japan, Germany and Canada
It is used for the disposal of various hazardous wastes. in foreign countries, the price of plasma hazardous waste disposal device with daily capacity of two tons is 2-3 million US dollars.
the treatment of hazardous waste by arc plasma technology can completely solve the secondary environmental pollution caused by traditional incineration technology, which is safe, clean and energy-saving,
It ensures the resource, reduction and harmless of hazardous waste disposal, and improves the emission standard of tail gas, and gradually improves the environmental protection supervision and management system.
Item name quantity specification total price RMB remarks
the total price of the system is * 0.5, including special refractories and steel structures
Plasma generator (torch) 2, including cooling system, circulation system
Air and nitrogen compressor system, screw gas making equipment, cold drying unit, gas storage tank, etc
2. Secondary combustion chamber system 1 (including special refractory, flue gas valve and steel structure)
3. Primary waste heat boiler system 1. Graphite material, pump circulation system, etc
Secondary waste heat boiler system 1 boiler steel material, deaerator, etc
Soft water preparation system, 1-10 T / h reverse osmosis unit, etc
4 air cooler 1
Air blower 1
Hydrochloric acid absorption system
Ceramic membrane filtration 1