Domestic garbage-to-RDF pyrolysis gasification fuel gas electricity generation process

Abstract

The present invention discloses a domestic garbage-to-RDF pyrolysis gasification fuel gas electricity generation process, wherein raw domestic garbage is subjected to sorting, crushing and drying to prepare a RDF solid fuel, the RDF solid fuel is subjected to pyrolysis gasification to generate a combustible gas, and the combustible gas is introduced into a fuel gas electricity generator to generate electricity. According to the present invention, the heat value of the RDF solid fuel is far higher than the heat value of the raw garbage organic matter, the heat energy conversion rate of the pyrolysis gasification is high, the combustible gas obtained through the pyrolysis gasification is used to generate electricity, and the generation of dioxin is substantially reduced; the waste heat gas generated by the fuel gas electricity generator is introduced into the expansion screw electricity generator to generate electricity again so as to substantially improve the generated electricity; and the tail gas generated by the expansion screw electricity generator is introduced into the drying apparatus to dry the domestic garbage, such that the heat energy of the tail gas is completely utilized, and the complete adsorption of the wet garbage on the harmful substances in the tail gas is achieved.

Description

technical field [0001] The invention relates to the technical field of domestic waste treatment, in particular to a gas-fired power generation process for preparing RDF pyrolysis gasification from domestic waste. Background technique [0002] Coal and petroleum are important sources of energy for production and life in today's society. People have become dependent on coal and petroleum. However, both coal and petroleum are non-renewable energy sources. my country's coal reserves reach 600 billion tons, the largest coal reserves in my country It ranks third in the world, but the per capita reserves are about 462 tons, which is far less than the world average; by the end of 2000, my country's remaining recoverable oil reserves were 2.46 billion tons, accounting for only 1.8% of the world's total. The crisis has initially emerged, and the use of petrochemical energy releases a large amount of harmful gases, pollutes the environment, and affects people's health. Electric energy i...

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Problems solved by technology

[0004] The Chinese patent with the application number 201220184786.3 discloses a utility model patent entitled "Gas-steam combined cycle power generation device derived from garbage". The utility model patent for the "device", the Chinese patent application number 201220382981.7 discloses a utility model patent named "a combined gas-steam combined cycle power generation system of sludge and garbage derived fuel". To achieve the above purpose, but it is common that the heat energy cannot be fully utilized, the tail gas is directly or indirectly discharged into the air after simple treatment, the heat energy in the tail gas is wasted, and the tail gas containing heat energy will not only cause the greenhouse effect but also cause secondary pollution, garbage, etc. Direct stacking or landfilling of slag produced after incineration or pyrolysis and gasification will also affect soil quality and pollute water sources

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