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Organic solid waste epitaxial annular cavity gas-conducting fixed-bed gasifier and gasification method

A fixed-bed gasifier and annular cavity technology, which is applied in the manufacture of combustible gas and the petroleum industry, and can solve problems such as high tar content, high carbon content in solid phase ash, gas leakage at the feed port, etc.

Active Publication Date: 2022-01-04
苏州允清环境能源科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The organic solid waste epitaxial annular cavity gas-conducting fixed-bed gasifier can be applied to the gasification treatment of carbon-containing organic solids such as domestic garbage, medical waste, organic hazardous waste, industrial organic solid waste, biomass, and coal, and solves the problem of gas The counter-current gasification device that moves in the opposite direction to the material layer has a lot of tar content and the gas leakage problem at the feed port, and at the same time solves the problem of high carbon content in the solid phase ash of the downstream gasification device that moves in the same direction as the gas and the material layer The problem

Method used

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  • Organic solid waste epitaxial annular cavity gas-conducting fixed-bed gasifier and gasification method
  • Organic solid waste epitaxial annular cavity gas-conducting fixed-bed gasifier and gasification method
  • Organic solid waste epitaxial annular cavity gas-conducting fixed-bed gasifier and gasification method

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Experimental program
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Effect test

Embodiment 1

[0090] The structure of organic solid waste epitaxial annular cavity gas-conducting fixed-bed gasifier is as follows: Figure 1-3 as shown, Figure 1-3 Middle: 1-feed inlet, 2-upper valve of feed buffer bin, 3-feed buffer bin, 4-lower valve of feed buffer bin, 5-filling and releasing port of feed buffer bin, 6-top gasification Agent inlet, 7-distributing device, 8-upper furnace body, 9-lower furnace body, 10-gas outlet, 11-membrane water wall, 12-furnace grate, 13-ash tray, 14-bottom gasification Agent inlet, 15-extended annular cavity, 16-gasification agent distribution regulator, 17-middle gasification agent inlet, 18-inert gas purge inlet, 19-slag ring, 20-th One ash knife, 21-fire grate support, 22-the second ash knife, 23-broken slag block.

[0091] (1) Feed

[0092] The organic solid waste gasification furnace of the present invention is composed of three parts: a feeding device, a gasification device and a slagging device. The feeding device is composed of feed port...

Embodiment example

[0102] The inner diameter of the bottom of the gasifier is 3.6m, and the material to be treated is domestic waste, with a treatment capacity of 4100kg / h. The main operating conditions and gasification results are as follows:

[0103] (1) Material industry analysis is shown in the following table:

[0104]

[0105] (2) Operating conditions:

[0106] Gasification pressure: 7kPa;

[0107] Gasification agent: air + water vapor;

[0108] Air volume: 4600Nm 3 / h;

[0109] Water vapor volume: 500kg / h.

[0110] (3) Gasification result:

[0111] Gas production: 7200Nm 3 / h;

[0112] Composition of gas: H 2 : 16.17%, CO: 24.80%, CH 4 : 1.50%, CO 2 : 6.89%, N 2 : 50.44%, O 2 : 0.10%, C n h m : 0.10%;

[0113] Gasification efficiency: 69%;

[0114] Ash carbon content: 2.8%;

[0115] Gas tar content: 3 .

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Abstract

The invention discloses an organic solid waste epitaxial annular cavity gas-conducting fixed-bed gasification furnace and a gasification method. The gasification furnace includes a feeding device, a furnace body in a reaction zone including an upper furnace body and a lower furnace body, and a furnace top gas Gasification agent inlet, gasification agent inlet in the middle section, bottom gasification agent inlet, gas outlet and slag discharge device, the overlapping part of the upper furnace body and the lower furnace body forms an extended annular cavity, and the gas outlet is set On the side wall of the lower furnace body corresponding to the extension annular cavity and communicated with the extension annular cavity, the slagging device is arranged in the water and located below the lower furnace body. The organic solid waste epitaxial annular cavity gas-conducting fixed-bed gasifier can be applied to the gasification treatment of various carbon-containing organic solids, and solves the problem of high tar content and low feed rate in the counter-current gasification device where the gas and the material layer move in the opposite direction. At the same time, it solves the problem of high carbon content in the solid phase ash of the downstream gasification device where the gas and the material layer move in the same direction.

Description

technical field [0001] The invention relates to the field of solid waste treatment and resource utilization. Specifically, the invention relates to an epitaxial annular cavity air-guiding fixed-bed gasifier and a gasification method for organic solid waste. Background technique [0002] At present, domestic organic solid waste with high calorific value or high calorific value after treatment is often treated by thermochemical conversion, which can realize the reduction, recycling and harmlessness of organic solid waste. The main thermochemical conversion methods are incineration, pyrolysis and gasification. Incineration refers to the introduction of excess air to completely oxidize organic solid waste at high temperature into flue gas and non-combustible solid products, ash and fly ash. The heat energy is converted into electric energy for utilization. The nitrogen, sulfur, and chlorine elements contained in organic solid waste will be converted into nitrogen oxides, sulfur ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/20
CPCC10J3/20
Inventor 赵明董卫果杨竹
Owner 苏州允清环境能源科技有限公司
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