High-temperature plasma gasifying and fusing treatment system and method for industrial wastes

Abstract

The invention discloses a high-temperature plasma gasifying and fusing treatment system and method for industrial wastes. The system comprises a plasma gasifying unit and a waste heat recovering unit. The plasma gasifying unit comprises a plasma gasifying furnace and a secondary combustion chamber. The waste heat recovering unit comprises a waste heat exchanger communicating with high-temperature smoke generated by the secondary combustion chamber. The treatment system also comprises a smoke treatment system and a sludge drying system. The treatment process of the treatment system comprises the following steps of: a, performing plasma gasifying treatment on other industrial wastes except sludge, discharging bottom fused slurry generated by treatment to be recycled, and re-combusting the synthetic gas generated by treatment to form high-temperature smoke; b, performing heat-exchanging and cooling treatment on the high-temperature smoke generated in the step a; and c, performing smoking treatment on the cooled smoke in the step a and discharging the treated smoke outside. The treatment system and method disclosed by the invention can realize reduced, harmless, stable and resourceful treatment of the industrial wastes.

Description

technical field [0001] The invention relates to a high-temperature plasma gasification melting treatment system and method for industrial waste, belonging to the technical field of environmental protection. Background technique [0002] Most of the large amount of sludge and other solid wastes produced by the existing chemical and pharmaceutical industries are hazardous wastes, and these wastes are mainly disposed of by landfill or incineration. However, for landfill treatment, the landfill site must be far away from residential areas, and the landfill site has high requirements for anti-seepage treatment. If the disposal is not good, it will easily cause groundwater pollution. In addition, the waste buried in the ground may decompose and produce flammable , explosive or toxic gas, endangering the environment and even human health. Furthermore, landfill treatment needs to occupy a large amount of land, and the later maintenance costs and risks are relatively high. For inci...

AI Technical Summary

Problems solved by technology

However, for landfill treatment, the landfill site must be far away from residential areas, and the landfill site has high requirements for anti-seepage treatment. If the disposal is not good, it will easily cause groundwater pollution. In addition, the waste buried in the ground may decompose and produce flammable , explosive or toxic gas, endangering the environment and even human health

Furthermore, landfill treatment requires a large amount of land, and later maintenance costs and risks are relatively high

For incineration, it mainly adopts processes such as rotary kiln, grate furnace, and circulating fluidized bed. The incineration temperature is between 850°C and 950°C. The bottom slag and fly ash produced in the waste water are still hazardous wastes, so the incineration treatment can only achieve reduction treatment, but not harmless treatment

Images