Disposal system and method for combustible industrial solid wastes
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A solid waste and disposal system technology, which is applied in the direction of combustion methods, combustion product treatment, chemical instruments and methods, etc., can solve the problems of polluting the environment, affecting the daily life of people around the dump, affecting sustainable development and social stability, etc.
Active Publication Date: 2020-09-08
EAST CHINA ENG SCI & TECH
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[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 eco
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Embodiment 1
[0070] A disposal system for combustible industrial solid waste,
[0071] See figure 1 , the system includes a circulating fluidized bed boiler, a crushing and conveying device, a feeding device in front of the furnace, a bed material conveying device, a secondary SNCR denitrification device and a flue gas treatment subsystem. The flue gas treatment subsystem is used for flue gas deacidification, Heavy metal removal, dioxin removal and dust removal;
[0072] The circulating fluidized bed boiler includes a circulating fluidized bed boiler body, a primary fan 11, a secondary fan 12, an induced draft fan 13, a feeding fan 14 and a slag cooler 15, and the circulating fluidized bed boiler body includes a furnace 16, a cloth Air plate 161 and air chamber, two cyclone separators 10, "J" valve feeder 17, tail shaft flue 18, steam drum.
[0073] The flue gas outlet at the top of the furnace 16 of the circulating fluidized bed boiler is respectively connected to the upper flue gas inl...
Embodiment 2
[0090] Based on the above system, the present invention also includes a method for disposing of combustible industrial solid waste,
[0091] See image 3 , including the following steps:
[0092] Step (1): crushing and conveying process
[0093] The combustible industrial solid waste in the industrial solid waste storage warehouse, the combustible industrial solid waste has an ash content of 2% to 9%, and is transported to the primary shredder 31 through the chain conveyor 30 for crushing and primary crushing. The iron remover 32 removes iron to obtain first-grade solid waste particles, and the particle size of the first-grade solid waste particles is ≤150*200mm,
[0094] The first-level solid waste particles are transported to the second-level crusher 33 by the belt conveyor 1 for crushing and the second-level iron remover 34 to remove iron to obtain the second-level solid waste particles, and the particle size of the second-level solid waste particles is ≤80*80mm,
[0095...
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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...
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