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Coupled fluidized bed graded conversion reaction device and reaction method

The technology of a reaction device and a cyclone separation device is applied in the field of a coupled fluidized bed staged conversion reaction device, which can solve the problems of low methane yield, difficult slagging, and low utilization rate of pulverized coal, and achieve high heat transfer efficiency and save energy consumption. Low cost, not easy to clog and agglomerate

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

[0009] One of the technical problems mainly solved by the present invention is the low carbon conversion rate and gasification intensity, low methane yield, difficult slag discharge and low utilization rate of pulverized coal existing in the prior art. It provides a new coupling fluidization Bed fractional conversion reaction device and reaction method

Method used

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  • Coupled fluidized bed graded conversion reaction device and reaction method
  • Coupled fluidized bed graded conversion reaction device and reaction method
  • Coupled fluidized bed graded conversion reaction device and reaction method

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Effect test

Embodiment 1

[0043] The reaction process is as follows: the catalyst-loaded carbon-containing raw material enters the pyrolysis furnace for rapid pyrolysis, the pyrolysis gas and semi-coke are separated in the pyrolysis furnace and the cyclone separator, and the coal tar enters the follow-up equipment for purification and separation. Separation: The separated semi-coke flows through the first feeding mechanism and the second feeding mechanism respectively, and enters the first reaction zone at the same time as the gasification agent for mixing, combustion and partial gasification reaction. Part of the incompletely reacted carbon-containing particles is controlled by the valve and is initially separated by the particle cyclone separation device. Most of the relatively small carbon-containing particles are directly recovered from the gas riser to the first reaction zone to continue to participate in the reaction. The unseparated Carbon-containing particles and large-particle ash enter the cla...

Embodiment 2

[0046] The reaction process is as follows: the catalyst-loaded carbon-containing raw material enters the pyrolysis furnace for rapid pyrolysis, the pyrolysis gas and semi-coke are separated in the pyrolysis furnace and the cyclone separator, and the coal tar enters the follow-up equipment for purification and separation. Separation: The separated semi-coke flows through the first feeding mechanism and the second feeding mechanism respectively, and enters the first reaction zone at the same time as the gasification agent for mixing, combustion and partial gasification reaction. Part of the incompletely reacted carbon-containing particles is controlled by the valve and is initially separated by the particle cyclone separation device. Most of the relatively small carbon-containing particles are directly recovered from the gas riser to the first reaction zone to continue to participate in the reaction. The unseparated Carbon-containing particles and large-particle ash enter the cla...

Embodiment 3

[0049] The reaction process is as follows: the catalyst-loaded carbon-containing raw material enters the pyrolysis furnace for rapid pyrolysis, the pyrolysis gas and semi-coke are separated in the pyrolysis furnace and the cyclone separator, and the coal tar enters the follow-up equipment for purification and separation. Separation: The separated semi-coke flows through the first feeding mechanism and the second feeding mechanism respectively, and enters the first reaction zone at the same time as the gasification agent for mixing, combustion and partial gasification reaction. Part of the incompletely reacted carbon-containing particles is controlled by the valve and is initially separated by the particle cyclone separation device. Most of the relatively small carbon-containing particles are directly recovered from the gas riser to the first reaction zone to continue to participate in the reaction. The unseparated Carbon-containing particles and large-particle ash enter the cla...

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Abstract

The invention relates to a coupled fluidized bed graded conversion reaction device and a reaction method and mainly aims to solve the problems of low carbon conversion rates, low gasification intensities, low methane yields, hard slag discharge and low coal powder utilization rates in the prior art. By adopting the coupled fluidized bed graded conversion reaction device and the reaction method, acarbon-containing raw material with a catalyst is pyrolyzed in a pyrolyzation furnace, tar gases obtained after pyrolyzation are separated and collected, semicoke granules with the catalyst and a gasifying agent are respectively combusted and gasified in three reaction zones, reacted carbon-containing granules and a part of the catalyst are continuously fed back into the pyrolyzation furnace, ashslag at the bottoms of the reaction zones are firstly subjected to two-stage separation of a granule hydrocyclone separation device and a graded slag discharge device, and are secondly discharged outfrom the device according to acoustic emission monitoring feedback. By adopting the technical scheme, the technical problems are well solved, and the device can be applied to industrial production ofgraded conversion of coal.

Description

technical field [0001] The invention relates to a coupled fluidized bed graded conversion 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. [0003] Coal gasification is the core technology for efficient and clean utilization of coal, and the basis for the development of process industries such as coal-based chemical production, coal-based liquid fuels, synthetic natural gas (SNG), IGCC power generat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10J3/66C10J3/54C10J3/56C10J3/72C10J3/84C10K3/00C07C1/04C07C9/04
CPCC07C1/041C10J3/54C10J3/56C10J3/66C10J3/721C10J3/84C10J2300/0916C10J2300/093C10J2300/0943C10J2300/0956C10J2300/0959C10J2300/0966C10J2300/0969C10J2300/0973C10J2300/0976C10J2300/0986C10J2300/1603C10J2300/164C10K3/00C07C9/04
Inventor 徐俊钟思青高攀金渭龙
Owner CHINA PETROLEUM & CHEM CORP
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