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Reaction device and reaction method for catalytic gasification combined fluidized bed

A reaction device, catalytic gasification technology, applied in the gasification process, granular/powdered fuel gasification, combustible gas production, etc., can solve the problems of low methane yield, low carbon conversion rate and gasification intensity, and gasifier operation Problems such as poor stability and reliability, to achieve high carbon conversion rate, improved carbon conversion rate, efficient and stable reaction

Active Publication Date: 2019-03-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] One of the technical problems mainly solved by the present invention is the problems of low carbon conversion rate and gasification intensity, low methane yield and poor operation stability and reliability of the gasifier existing in the prior art. It provides a new catalytic gasification Combined fluidized bed reaction device and reaction method

Method used

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  • Reaction device and reaction method for catalytic gasification combined fluidized bed
  • Reaction device and reaction method for catalytic gasification combined fluidized bed
  • Reaction device and reaction method for catalytic gasification combined fluidized bed

Examples

Experimental program
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Effect test

Embodiment 1

[0029] The reaction process is as follows: Catalyst and carbon-containing raw materials enter the settler from the feed pipeline, are introduced into the fine reactor by the feeding mechanism, and are mixed with water vapor and oxygen from the gas pipeline to carry out gasification reaction in the fine reactor After the reaction, the large-particle slag falls into the slag pool through natural settlement, and is separated from the slag by the catalyst recovery equipment and recovered from the slag pool to recover the catalyst. The carbon-containing particles reacted in the fine reactor are lifted into the coarse reactor by gas for further gasification reaction. The reacted gas and solid fine ash, carbon-containing particles and slag enter the separation equipment. After separation, the gas, part of the fine ash and carbon-containing particles are discharged by the cyclone and enter the fast reactor for rapid gasification reaction, and then The product gas, fine ash and partial...

Embodiment 2

[0032] The reaction process is the same as in Example 1. In the experiment, Inner Mongolia lignite was selected, and it was crushed to make pulverized coal below 1mm and mixed with 5% potassium carbonate catalyst. The diameter of the fine reactor is 50mm, the height is 3000mm, the linear velocity is 2m / s, the water-carbon ratio is 1mol / mol, the reaction temperature is 800°C, and the reaction pressure is 2MPa; the diameter of the coarse reactor is 300mm, the height is 1500mm, and the reaction temperature is 650°C, reaction pressure 2MPa. The loading amount of the catalyst accounts for 5% of the raw coal mass. The amount of circulating synthesis gas accounts for 20% of the total output of the gasification unit, and the ratio of hydrogen to carbon monoxide in the circulating synthesis gas is 1. Due to the high separation efficiency, there are very few particles leaving the separation equipment, so the fast reactor is a tubular reactor, and the operating temperature is 850°C. T...

Embodiment 3

[0034] The reaction process is the same as in Example 1. In the experiment, Inner Mongolia lignite was selected, and it was crushed to make pulverized coal below 1mm and mixed with 5% potassium carbonate catalyst. The diameter of the fine reactor is 50mm, the height is 3000mm, the linear velocity is 2m / s, the water-carbon ratio is 1mol / mol, the reaction temperature is 800°C, and the reaction pressure is 2MPa; the diameter of the coarse reactor is 150mm, the height is 1500mm, and the reaction temperature is 650°C, reaction pressure 2MPa. The loading amount of the catalyst accounts for 5% of the raw coal mass. The amount of circulating synthesis gas accounts for 20% of the total output of the gasification unit, and the ratio of hydrogen to carbon monoxide in the circulating synthesis gas is 1. Due to the high separation efficiency, there are very few particles leaving the separation equipment, so the fast reactor is a tubular reactor, and the operating temperature is 850°C. T...

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Abstract

The invention relates to a reaction device and a reaction method for a catalytic gasification combined fluidized bed, and mainly solves the problems of low carbon conversion rate and gasification intensity, low methane yield and relatively low gasification furnace operation stability in the prior art. Through the technical scheme, according to the reaction device and the reaction method for the catalytic gasification combined fluidized bed, a catalyst is supported into a carbon-containing raw material, partial combustion and a gasification reaction are carried out on the supported catalyst, agasifying agent and an oxidizing agent simultaneously at relatively high linear speed and relatively low particle concentration in a fine reactor, and a further gasification reaction is carried out onsubsequently generated synthesis gas and carbon-containing particles without reacting completely in a coarse reactor; and the above technical problems are solved preferably, so that the reaction device and the reaction method can be applied to industrial production of catalytic gasification rich methanogenesis.

Description

technical field [0001] The invention relates to a catalytic gasification combined fluidized bed reaction device and a reaction method. Background technique [0002] my country is a large coal country with abundant coal resources. With the rapid development of my country's economy, the production and consumption of coal have been rising steadily. In 2014, my country's coal production reached 3.87 billion tons, which is close to half of the world's production. . my country has become the world's largest coal producer and coal consumer. The direct combustion of coal releases a large amount of pollutants, which leads to frequent occurrence of smog in many areas of our country and seriously affects the environmental problems. Coal gasification technology is a key technology to achieve clean, efficient and comprehensive utilization of coal, an important way to convert coal, and one of the key technologies for synthetic chemicals, combined cycle power generation, and coal-to-subst...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/54C10J3/56C10J3/84
CPCC10J3/54C10J3/56C10J3/84C10J2300/093C10J2300/0953C10J2300/0956C10J2300/0959C10J2300/0969C10J2300/0973C10J2300/0976C10J2300/0986Y02P20/52
Inventor 徐俊钟思青高攀金渭龙
Owner CHINA PETROLEUM & CHEM CORP
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