Dechlorination hydrogen production device for treating PVC-containing plastic wastes

Abstract

A dechlorination hydrogen production device for treating PVC-containing plastic wastes comprises a first spiral moving bed, a second spiral moving bed, a fluidized bed, a dechlorination tower and a tar cracker; the first spiral moving bed is used for drying and dehydrating the PVC-containing plastic wastes to obtain a dried and dehydrated material; the second spiral moving bed is used for carryingout high temperature anaerobic pyrolysis on the dried and dehydrated material to generate a high-temperature pyrolysis gas and high-temperature pyrolysis wastes; the fluidized bed is used for carrying out high-temperature vaporization on the high-temperature pyrolysis wastes to generate a vaporized gas and ash; the dechlorination tower is used for dechlorinating the high-temperature pyrolysis gasto obtain a dechlorinated gas; and the tar cracker is used for carrying out tar cracking treatment on a mixed gas of the vaporized gas and the dechlorinated gas to obtain harmless combustible gases.The PVC-containing plastic wastes harmful to the environment are converted into the chlorine element-removed harmless combustible gases with high added values, so the utilization rate of urban waste resources is increased, and the pollution of the urban wastes to the environment is reduced.

Description

technical field [0001] The invention belongs to the technical field of dechlorination and hydrogen production, and in particular relates to a dechlorination and hydrogen production device for processing plastic waste containing PVC. Background technique [0002] Municipal solid waste includes three categories: industrial solid waste, municipal solid waste and hazardous waste. Municipal solid waste mainly refers to solid waste generated in urban daily life or activities that provide services for urban daily life. The collection, transportation and treatment of municipal solid waste will produce a large number of harmful components, which will cause pollution to the atmosphere, soil, water, etc., which is one of the major environmental problems faced by our country and countries all over the world. All countries in the world regard the reduction, harmlessness and recycling of urban domestic waste as the principle of comprehensively solving the problem of urban domestic waste. ...

AI Technical Summary

Problems solved by technology

Compared with the two treatment technologies, from the perspective of resource utilization and energy utilization, direct incineration is solid-state heterogeneous combustion, which has problems such as insufficient combustion and uneven temperature distribution, resulting in low efficiency, while pyrolysis gasification can The conversion of municipal solid waste into gaseous, liquid and solid products with relatively stable components can effectively improve its utilization efficiency, utilization range and economy; from the perspective of pollutant discharge, the direct incineration caused by Secondary pollution, especially the emission of dioxins, restricts the wide application of this technology

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