Novel method for generating electricity by pyrolysis and incineration of waste

A technology for incineration power generation and garbage, applied in combustion methods, chemical instruments and methods, incinerators, etc., can solve the problems of low waste utilization efficiency and loss of renewable resources, and achieve the effect of low equipment investment and high power generation efficiency

Inactive Publication Date: 2010-10-06
GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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Problems solved by technology

At present, my country's waste utilization efficiency is still low, resulting in the loss of "renewable resources" reaching 30-40 billion per year, including the loss of 20 billion yuan caused by the unresourced treatment of urban waste.

Method used

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  • Novel method for generating electricity by pyrolysis and incineration of waste
  • Novel method for generating electricity by pyrolysis and incineration of waste
  • Novel method for generating electricity by pyrolysis and incineration of waste

Examples

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Embodiment

[0025] see figure 1 and figure 2 As shown, a novel waste pyrolysis incineration power generation method includes the following steps:

[0026] (1) Municipal solid waste pretreatment: store the municipal solid waste in the garbage pit, after crushing, screening and pressing, input it into the rotary kiln for drying and dehydration, and control the moisture content within 25%;

[0027] (2) Garbage gasification: the pretreated municipal solid waste is sent into the gasifier 2 through the feeder 1, and air is used as the gasification medium. Combustion, gasification reaction occurs, and combustible gas is generated.

[0028] (3) Gasification gas purification: the combustible gas is purified by a purification system consisting of Venturi 3, the first-stage water washing tower 4 and the second-stage water washing tower 5, and the ash and tar in the gas are removed and stored in the gas cabinet 6;

[0029] (4) Combustion of gasification gas for power generation: the low calorifi...

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Abstract

The invention discloses a novel method for generating electricity by pyrolysis and incineration of waste. The method comprises the following steps of: (1) urban household waste pretreatment; (2) waste gasification; (3) gasified gas purification; (4) gasified gas burning for generating electricity; and (5) sewage treatment and energy conservation. In the method, only clean combustible mixed gas and harmless ash are generated, and the two products have value in use; the mixed gas is a mixture which contains carbon monoxide, nitrogen, alkanes and hydrogen, can be used for generating electricity, and has higher electricity-generating efficiency compared with other waste treatment techniques; the carbon dioxide generated during burning the clean mixed gas is reduced greatly to minimize the influence on the environment; during the urban waste treatment, waste classification is not required; fuels except waste are not required; compared with electricity generation by burning waste directly, the novel method does not need expensive waste gas treatment systems, sewage treatment systems, boiler feed systems, matching systems for generating electricity, and the like, so the equipment investment is low.

Description

technical field [0001] The invention relates to the technical field of urban solid waste treatment, in particular to a waste pyrolysis incineration power generation method for reducing secondary pollution. Background technique [0002] Environment and energy are two major factors that determine human survival and development. Since the industrial revolution, the degree of industrialization in the world has been increasing day by day. With the increase of production scale, energy consumption has risen sharply, causing global energy shortage. At the same time, large-scale production has produced a large amount of waste, especially in cities. Moreover, the urbanization of countries in the world is developing rapidly. In 2008, the urban population surpassed the rural population for the first time, reaching nearly 3.4 billion. The further increase of urban population density has caused the problem of municipal solid domestic waste (hereinafter referred to as: municipal waste) to...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B09B3/00B09B5/00F23G5/027C02F9/14
CPCY02E20/12
Inventor 熊祖鸿袁浩然陈勇吴创之李海滨赵增立马隆龙
Owner GUANGZHOU INST OF ENERGY CONVERSION - CHINESE ACAD OF SCI
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