Method for integrative sorting and destructive distillation pyrolysis and gasification of household refuse without discharge of dioxin

Abstract

The invention provides a method for integrative sorting and destructive distillation pyrolysis and gasification of household refuse without discharge of dioxin. According to the method, an automatic garbage integrative sorting system, a feeding charging system, a destructive distillation pyrolysis and gasification furnace system, an exhaust gas purifying device, an ash removing device and a combustible gas power generation system are used in the method; problems in treatment of household refuse are thoroughly overcome, for example, generation of dioxin is avoided and pollution of waste water, exhaust gas and waste residues is reduced; plastic garbage in hybrid municipal solid waste is sorted out for preparation of plastic particles by using the automatic garbage integrative sorting system; after drying, rest garbage is converted into combustible gas and is used to prepare the renewable resource tar through integrative treatment of destructive distillation pyrolysis and gasification, waste residues are used for brick making, waste water is recycled after treatment, and exhaust gas is purified and discharged after the exhaust gas reaches the standard. When the method provided by the invention is used for treating garbage, generation and harm of dioxin are avoided, no waste water, waste residues and wastes are discharged, harmlessness and full resource utilization are realized in reality, and recycling economy of treating wastes with wastes and turning the waste into the valuable is achieved.

Description

Technical field: [0001] The invention belongs to the automatic comprehensive sorting and classification system of urban living garbage in the field of energy saving and environmental protection, and the garbage carbonization pyrolysis gasification into combustible gas, and the comprehensive treatment and utilization method of garbage, and specifically relates to a garbage carbonization pyrolysis without dioxin emissions Gasification equipment system. Background technique: [0002] At present, there is no good solution for the mixed domestic waste treatment both at home and abroad. At present, there are three methods commonly used in domestic garbage disposal in cities all over the country: one is sanitary landfill method; the other is incineration and incineration power generation method; the third is composting fermentation method. The problems and deficiencies are as follows: [0003] 1. Sanitary landfill method; currently the most used garbage disposal method, this meth...

AI Technical Summary

Problems solved by technology

[0004] (1) Large area, short use time (generally ten years), long land occupation time (cannot be reused within 100 years)

[0005] (2) Odor and poisonous gas generated around the landfill, bacteria, viruses, sources of disease transmission of mosquitoes and flies, and carcinogens, seriously endangering the health of ordinary people

[0006] (3) The garbage after landfill causes serious pollution to the soil, groundwater and atmosphere, and its potential hazards are constantly increasing

[0007] (4) Garbage landfills cause a serious waste of resources

[0008] (5) There is a large amount of sewage overflowing every day, which requires manpower and material resources to deal with, and it will take 20 years of long-term maintenance and treatment. How much will be paid for the treatment of seepage sewage every year? The environmental impact on the future is difficult to estimate

[0011] (1) First look at its reduction. On the surface, it seems that waste incineration has reduced by 50% to 60%, but in fact the remaining 40% to 50% of the slag still needs to be reprocessed, and it still takes up a lot of landfill. land, groundwater and soil polluted by heavy metals

[0012] (2) Let’s look at resource utilization again, we don’t need to talk about direct incineration, because this method has not achieved resource utilization at all, let alone industrialization, but has seriously wasted recyclable resources

[0013] (3) The method of waste incineration to generate electricity. This technology comes from abroad and is mature. However, after being introduced into our country, many places have to go to landfill because of the high operating costs and the government's financial inability to affor

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