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Differential fluidized bed reaction device and reaction method

A fluidized bed reactor and reaction device technology, which is applied in gasification process, granular/powder fuel gasification, manufacture of combustible gas, etc. question

Active Publication Date: 2022-05-24
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] 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, difficult slagging and low utilization rate of pulverized coal existing in the prior art. Chemical bed reaction device and reaction method

Method used

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  • Differential fluidized bed reaction device and reaction method
  • Differential fluidized bed reaction device and reaction method
  • Differential fluidized bed reaction device and reaction method

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Experimental program
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Effect test

Embodiment 1

[0040] The carbonaceous feedstock loaded with the catalyst enters the pyrolysis zone of the inner circulating fluidized bed reactor, and after being fluidized by the fluidized air, it is rapidly mixed with the hot particle carrier from the gasification zone in the circulating return zone, and then pyrolyzed rapidly. , the pyrolyzed tar gas, the pyrolyzed semi-coke particles 1, the gasified particles and the crude gas from the gasification zone enter the settling section together with the gas-solid separation equipment for multi-stage separation. The separated tar-rich crude gas is collected, and the rest of the gasification particles separated by the sedimentation section enter the gasification zone together with the semi-coke particles 1 and the semi-coke particles 2 passing through the circulating feed zone and come from the bottom of the gasification zone. The gasification agent is mixed and gasified, and another part of the fine powder particles separated by the gas-solid s...

Embodiment 2

[0043]The carbonaceous feedstock loaded with the catalyst enters the pyrolysis zone of the inner circulating fluidized bed reactor, and after being fluidized by the fluidized air, it is rapidly mixed with the hot particle carrier from the gasification zone in the circulating return zone, and then pyrolyzed rapidly. , the pyrolyzed tar gas, the pyrolyzed semi-coke particles 1, the gasified particles and the crude gas from the gasification zone enter the settling section together with the gas-solid separation equipment for multi-stage separation. The separated tar-rich crude gas is collected, and the rest of the gasification particles separated by the sedimentation section enter the gasification zone together with the semi-coke particles 1 and the semi-coke particles 2 passing through the circulating feed zone and come from the bottom of the gasification zone. The gasification agent is mixed and gasified, and another part of the fine powder particles separated by the gas-solid se...

Embodiment 3

[0046] The carbonaceous feedstock loaded with the catalyst enters the pyrolysis zone of the inner circulating fluidized bed reactor, and after being fluidized by the fluidized air, it is rapidly mixed with the hot particle carrier from the gasification zone in the circulating return zone, and then pyrolyzed rapidly. , the pyrolyzed tar gas, the pyrolyzed semi-coke particles 1, the gasified particles and the crude gas from the gasification zone enter the settling section together with the gas-solid separation equipment for multi-stage separation. The separated tar-rich crude gas is collected, and the rest of the gasification particles separated by the sedimentation section enter the gasification zone together with the semi-coke particles 1 and the semi-coke particles 2 passing through the circulating feed zone and come from the bottom of the gasification zone. The gasification agent is mixed and gasified, and another part of the fine powder particles separated by the gas-solid s...

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Abstract

The invention relates to a differential velocity fluidized bed reaction device and a reaction method, which mainly solve the problems of low carbon conversion rate and gasification intensity, low methane yield, difficult slag discharge and low utilization rate of pulverized coal in the prior art. In the present invention, through a differential velocity fluidized bed reaction device and a reaction method, the carbonaceous raw material loaded with the catalyst enters the pyrolysis zone of the inner circulating fluidized bed reactor, and passes through the circulating return zone from the gasification zone. After the carbon-containing particles are rapidly mixed, they are rapidly pyrolyzed. The pyrolyzed semi-coke particles enter the gasification zone for mixing with the gasification agent and gasification reaction. Enter into the slag discharge combustion device, carry out the oxygen-enriched combustion reaction, the heat generated after the reaction supplements the heat demand of the reaction in the gasification zone, and the final generated low-carbon ash is accurately discharged under the monitoring of the acoustic emission detection system. The above-mentioned technical problems are better solved, and the method can be applied to the industrial production of coal graded conversion.

Description

technical field [0001] The invention relates to a differential velocity 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 output reached 3.87 billion tons, close to half of the world's output. . my country has become the world's largest coal producer and coal consumer. The direct combustion and utilization of coal releases a large amount of pollutants, resulting in frequent occurrence of smog in many areas of my country, which seriously affects environmental problems. [0003] Coal gasification is the core technology for efficient and clean utilization of coal, and is the basis for the development of process industries such as coal-based chemical production, coal-based liquid fuels, synthetic natural gas (SNG), IGCC power generation, h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/56C10J3/54C10J3/66C10J3/72C10J3/84
CPCC10J3/56C10J3/54C10J3/66C10J3/84C10J3/72C10J2300/0986C10J2300/093C10J2300/1603C10J2300/0959C10J2300/0956C10J2300/0976C10J2300/0973C10J2300/0969C10J2300/0966
Inventor 徐俊钟思青高攀金渭龙
Owner CHINA PETROLEUM & CHEM CORP
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