Power generation technique based on pyrolyzation and gasification of household refuse and incineration of fuel gas

Abstract

The invention discloses a power generation technique based on pyrolyzation and gasification of household refuse and incineration of fuel gas. The power generation technique comprises the steps that the household refuse is sorted, pulverized and dried; then pyrolyzation and gasification are conducted on the household refuse, so that combustible gas is generated; the combustible gas is incinerated; steam is prepared from hot air obtained through incineration through heat exchange; and the steam is introduced into a steam power generator for power generation. According to the power generation technique based on pyrolyzation and gasification of the household refuse and incineration of the fuel gas, the heat energy conversion rate of pyrolyzation and gasification is higher, the power generation efficiency is greatly improved, and the cost caused by procedure increment can be counteracted by the increased economic benefits; the refuse is subjected to pyrolyzation and gasification under an oxygen-free or oxygen-deficient condition firstly after being dried instead of being directly incinerated, and thus the amount of generated dioxin is greatly reduced; the dioxin can be evenly decomposed by conducting heat-storage incineration of the generated combustible gas through secondary gas at the temperature over 850 DEG C. Tail gas is used for dying the refuse, and smoke emission hardly exists under the adsorption action of the pulverized refuse.

Description

Technical field [0001] The invention involves the field of treatment technology in domestic waste, especially a kind of domestic garbage heat -relieving gas incineration technology. Background technique [0002] my country is the world's largest carbon emission country and the second largest energy consumer. However, my country's coal and petroleum resource reserves are not abundant, the per capita share is low, and the energy crisis is faced. Gas, pollution environment, affecting the health of the people.Electric energy is cleanless and can be easily converted into other forms of energy such as mechanical energy, light energy, and thermal energy, and is widely used by people.Nowadays, electricity is inseparable from people's daily life.With the development of society, the rapid process of urbanization, the increase in urban population, the improvement of people's living standards, the production of urban domestic garbage is increasing, the ingredients of domestic waste are becom...

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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". A utility model patent for a device", the Chinese patent application number 201220382981.7 discloses a utility model patent named "a combined gas-steam combined cycle power generation system with 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 pollution and water sources

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