RDF (refuse derived fuel) pyrolysis and gasification system

Abstract

The invention discloses an RDF (refuse derived fuel) pyrolysis and gasification system and belongs to the field of urban domestic refuse treatment. The RDF pyrolysis and gasification system mainly comprises a feeding device, a waste heat boiler and a cold slag system, and is characterized by further comprising a pyrolysis and gasification furnace and a high-temperature separator. A boiling fluidized bed is arranged at the bottom of the pyrolysis and gasification furnace, the feeding device is connected with the pyrolysis and gasification furnace, the pyrolysis and gasification furnace is connected with the waste heat boiler through the high-temperature separator, and the cold slag system is connected with the pyrolysis and gasification furnace and a slagging device of the waste heat boiler. The RDF pyrolysis and gasification system has the advantages that the RDF pyrolysis and gasification system is simple in structure, reliable to operate and capable of achieving recycling, reduced and harmless treatment of urban domestic refuse and is mainly used for urban domestic refuse treatment.

Description

technical field [0001] The invention belongs to the field of municipal solid waste treatment, and in particular relates to a refuse-derived fuel (RDF) pyrolysis gasification system. Background technique [0002] With the increasing national environmental protection requirements and the acceleration of population urbanization, the amount of urban waste has increased rapidly. The annual output of urban domestic waste in my country has reached 160 million tons, and it is increasing at a rate of more than 10% every year. It is estimated that by 2030, urban The annual output of domestic waste will reach 409 million tons. The problem of urban waste disposal has been paid more and more attention by government departments. Governments and departments at all levels have invested a lot of manpower, material resources and financial resources in the recycling, transportation and treatment of urban waste, which has made great progress in urban waste disposal in my country. However, due t...

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Problems solved by technology

However, due to my country's national conditions, unsound garbage classification standards, insufficient publicity, inadequate sorting, transfer and terminal treatment facilities, and citizens' living habits, many factors have caused high investment and low output in urban waste treatment, seriously restricting my country's urbanization development process

[0003] At present, my country's urban waste treatment technologies mainly include three forms: landfill, composting and incineration. Landfilling will occupy a large amount of land, which will easily cause secondary pollution of soil and water sources, and destroy the ecological balance; the composting time period is long, and water, soil and gas are seriously Pollution, and the types of garbage that can be processed are limited; incineration will produce highly toxic, non-degradable carcinogens, dioxins, and dozens of harmful gases

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