Electrical power generation system and method based on fire coal coupled household waste pyrolysis

A technology of domestic waste and power generation system, which is applied in the manufacture of combustible gas, gasification process, petroleum industry, etc. It can solve the problems of large differences in physical parameters of pulverized coal, high water content of domestic waste, and large geometric dimensions, so as to achieve less dust entrainment , small flue gas emission and improved thermal efficiency

Pending Publication Date: 2019-02-26
ZHEJIANG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, domestic waste has high water content, low calorific value, and large geometric size. Its physical parameters are too different from coal powder, so it cannot be effectively blended directly with coal powder.

Method used

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  • Electrical power generation system and method based on fire coal coupled household waste pyrolysis
  • Electrical power generation system and method based on fire coal coupled household waste pyrolysis

Examples

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Embodiment Construction

[0033] See attached picture. This embodiment includes a circulating fluidized bed coal combustion system, a fixed bed garbage pyrolysis system and a synthesis gas treatment system. Among them, the design of the coal-fired system is based on the HG-480 / 13.7L.MG31 circulating fluidized bed boiler with a power of 135MW, and the design of the pyrolysis system is based on the experimental data of the fixed bed.

[0034] The circulating fluidized bed coal combustion system includes: a fluidized bed combustion furnace 1, a cyclone separator 3 at the outlet of the combustion furnace, a return leg 4 and a combustion furnace screw feeder 9; The lower part of the wall is provided with a pulverized coal feeding port, which is connected with the screw feeder 9 of the combustion furnace, and the lower part of the right wall of the furnace is connected with the return leg 4; The air distribution plate directly above the slag mouth is connected to the furnace from the bottom; the outlet on t...

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Abstract

The invention discloses an electrical power generation system and method based on fire coal coupled household waste pyrolysis. The system comprises a circulating fluidized bed coal firing system, a fixed bed waste pyrolysis system and a synthesis gas treatment system, wherein the circulating fluidized bed coal firing system is used for performing blending combustion on garbage coke and pulverizedcoal to produce steam for heat supply or electrical power generation; the fixed bed waste pyrolysis system is used for converting dried household waste into coke and synthesis gas; the synthesis gas treatment system is used for cooling and purifying the synthesis gas, separating tar and obtaining combustible gas. By means of co-combustion of the pulverized coal and the garbage coke, equipment is enabled to be in full-load operation; by means of blending combustion of the synthesis gas, heat efficiency of a boiler is improved, and the household waste is efficiently treated while coal consumption is reduced.

Description

technical field [0001] The invention belongs to the field of solid waste disposal, and in particular relates to a power generation system and method for coal-fired coupled domestic waste pyrolysis. Background technique [0002] With the acceleration of urbanization, the problem of "garbage besieging the city" has become increasingly prominent, and how to realize the recycling and harmless disposal of garbage has become an urgent problem to be solved. At present, the most widely used disposal method is waste incineration to generate electricity, but at this stage, its treatment capacity still cannot meet the demand. Building a waste incineration power plant that meets the standards requires a huge amount of money and faces problems such as the "NIMBY effect". At the same time, the waste incineration process produces harmful substances such as dioxins, causing inevitable secondary pollution to the environment. [0003] The pyrolysis and gasification technology of garbage is a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/20C10J3/84
CPCC10J3/20C10J3/84C10J2300/0906C10J2300/1603Y02P20/10
Inventor 严密张思成刘建雍周宣佑王国斌苏红才叶东尼翁周超
Owner ZHEJIANG UNIV OF TECH
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