A method for biological drying and aeration by recycling waste heat from pyrolysis combustible gas for power generation

Abstract

The invention provides a method for recycling the residual heat of pyrolysis combustible gas for power generation to carry out biological drying and aeration. The dried garbage in the biological drying bin is loaded into a cracking gasifier for cracking and gasification, and the combustible gas produced by cracking and gasification is transported to The generator set generates electricity and produces high-temperature flue gas; the cooling water is input into the cylinder liner of the generator set and / or the first heat exchanger, and the cooling water cools the generator set in the cylinder liner of the generator set to obtain hot water. Hot water is obtained after heat exchange with high-temperature flue gas in the heat exchanger; the hot water is sent to the floor heating module of the biological drying chamber for heating and / or in the second heat exchanger, and the hot water is in the second heat exchanger and The gas used for aeration is used for heat exchange. After heating, the gas enters the biological drying tank for aeration. After the hot water is cooled, it is re-introduced into the cylinder liner of the generator set and / or the first heat exchanger, which realizes both high-temperature flue gas and cylinder The waste heat of the jacket cooling water is recovered and utilized, and the recovered waste heat is used to achieve drying and increase the aeration temperature to shorten the drying time.

Description

technical field [0001] The invention relates to the fields of biological drying, pyrolysis gasification and combustible gas power generation of garbage, and in particular to a method for recycling waste heat of pyrolysis combustible gas power generation for biological drying and aeration. Background technique [0002] The current domestic waste is mainly disposed of by pyrolysis and gasification, but the waste is not pre-treated before pyrolysis and gasification, and the moisture content of the waste is high and difficult to control, which will greatly affect the efficiency of pyrolysis and gasification and gas production stability and quality. Moreover, in the process of pyrolysis and gasification, excessive moisture content of waste will make it difficult to control the temperature of the process of pyrolysis and gasification, and a large amount of tar and pollutants will easily be produced. Even if there is a pre-treatment of garbage biological drying, most of the existi...

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for recycling the waste heat of pyrolysis combustible gas for biological drying and aeration, so as to solve the problem that the waste heat of the power generation unit in the prior art is not fully utilized and the temperature of the gas source for aeration to the biological drying chamber is relatively high. low, long drying time

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