Disposal system and method for combustible industrial solid wastes

Abstract

The invention relates to the technical field of disposal of combustible industrial solid wastes, in particular to a disposal system and a disposal method for combustible industrial solid wastes. The disposal system comprises a circulating fluidized bed boiler, a crushing and conveying device, a furnace feeder, a bed material conveying device, a two-stage SNCR denitrification device and a flue gastreatment subsystem; a gas inlet pipeline of a "J" valve returner of the circulating fluidized bed boiler communicates with a material return fan; flue gas outlets of two cyclones each communicate with a shaft flue at the tail part of the circulating fluidized bed boiler through a pipeline; and a high-temperature superheater, a low-temperature superheater, a coal economizer and a horizontal air preheater from are sequentially arranged from top to bottom at the shaft flue. The disposal system provided by the invention solves the problem of disposal of industrial solid wastes and does not need to burn other fuels such as coal, oil and natural gas in a normal combustion process; the ash and deacidified ash produced in combustion are both general wastes that can be comprehensively utilized; and the deacidified and dust-removed flue gas meets the ultra-clean emission requirements.

Description

technical field [0001] The invention relates to the technical field of combustible industrial solid waste disposal, in particular to a combustible industrial solid waste disposal system and method. Background technique [0002] In some areas of our country, the footwear industry is one of the local pillar industries. Footwear enterprises generate a large amount of solid waste (scratch waste and garbage) in the production process; pulp-dissolving and paper-making enterprises, clothing and umbrella enterprises, non-leather leather processing enterprises, and building decoration industries also produce a large amount of combustible solid waste in the production process produce. [0003] At present, the solid wastes produced by these enterprises are usually disposed of by methods such as centralized stacking, mixed combustion (mixed with domestic waste, or mixed with about 50% coal for combustion), and some are discarded at will. These solid wastes are difficult to produce in n...

AI Technical Summary

Problems solved by technology

[0003] At present, the solid wastes produced by these enterprises are usually disposed of by methods such as centralized stacking, mixed combustion (mixed with domestic waste, or mixed with about 50% coal for combustion), and some are discarded at will. These solid wastes are difficult to produce in nature. Degradation not only occupies a large amount of land and pollutes the environment, but also has seriously affected the daily life of people around the dump. If the industrial solid waste is not disposed of in a "reduced, harmless, and resourceful" manner as soon as possible, it will be Directly affect the sustainable development of the local economy and social stability

[0004] At present, when the above-mentioned solid wastes are incinerated at home and abroad, one of the industrial solid wastes needs to add about 50% fuel coal during the incineration process of the operating device, and a small amount of industrial solid wastes are mixed into domestic garbage and enter the life. The example of garbage furnace incineration, from the actual production point of view, its operation is unstable, economical, and environmentally friendly; therefore, a more environmentally friendly, economical, and controllable combustible industrial solid waste disposal system is developed and methods make sense

Images