Household garbage gasification treatment system with composite dechlorination function

Abstract

The invention relates to a household garbage gasification treatment system with a composite dechlorination function. The system comprises a gasification furnace and a composite dechlorination system,wherein the composite dechlorination system comprises a coarse chlorine filtration device and a cyclone separator dechlorination device, the coarse chlorine filtration device comprises a plurality offiltering plates arranged in the gasification furnace from top to bottom and a calcium spraying port formed in the gasification furnace, one end of the filtering plate is connected with the gasification furnace, the filtering plate inclines downwards from the fixed end to the free end, the gasification furnace comprises a gasification reaction layer and a filter layer for placing the coarse chlorine filtration device, the filter layer is arranged at the top of the gasification reaction layer, and the calcium spraying port is arranged at the gasification reaction layer. According to the invention, after combustible gas is generated in a gasification furnace, the combustible gas can be directly subjected to deep dechlorination, so that high-temperature corrosion of the combustible gas to subsequent equipment is avoided so as to improve the steam parameters and the power generation efficiency and easily reduce the low-temperature heterogeneous catalytic synthesis of dioxin in the flue gascooling process.

Description

technical field [0001] The invention relates to a domestic garbage gasification treatment system, in particular to a composite dechlorination domestic garbage gasification treatment system. Background technique [0002] The treatment and disposal of domestic garbage and other wastes is a major problem that needs to be solved urgently in our country. Among them, the incineration power generation technology has the advantages of high degree of harmlessness, significant effect of volume and weight reduction, and energy recovery and utilization. It has been developed and applied relatively rapidly in recent years. However, the incineration process of domestic waste will inevitably produce secondary pollutants, especially chlorine-containing pollutants such as dioxin and hydrogen chloride (HCl), which will cause great harm to the environment and human health. On the one hand, the chlorine contained in domestic waste mainly forms HCl after incineration, and its content in waste in...

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Problems solved by technology

[0004] The present invention mainly solves the problem in the prior art that HCl can only be removed through a low-temperature tail gas purification device, which easily causes high-temperature corrosion of equipment, thereby limiting the steam parameters of waste incineration power generation, resulting in low power generation rate, and is easy to directly Or indirectly cause technical problems such as dioxin formation, etc., provide a direct deep dechlorination of combustible gas after the gasifier generates combustible gas, avoid high-temperature corrosion of subsequent equipment by combustible gas, thereby improving steam parameters and improving power generation efficiency, And help to reduce dioxins in the process of flue gas cooling, low-temperature heterogeneous catalytic synthesis of composite dechlorination domestic waste gasification treatment system

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