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Fluidized bed and molten bed combination type coal catalytic gasification reaction apparatus and fluidized bed and molten bed combination type coal catalytic gasification reaction method

A technology of fluidized bed gasification and coal catalytic gasification, which is applied in the field of coal catalytic gasification, can solve the problems of low carbon conversion rate and gasification intensity, low methane yield, poor operation stability and reliability of gasifier, etc. Achieve high carbon conversion rate, high energy utilization rate, and promote the effect of pyrolysis and methanation reaction process

Inactive Publication Date: 2018-03-06
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] 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 in the prior art. The present invention proposes a fluidized bed and Catalytic gasification device combined with molten bed, the device is composed of fluidized bed gasification section and molten bed gasification section, circulating synthesis gas and high temperature mixed gas are fed into the fluidized bed gasification section for pyrolysis and gasification and methanation reaction

Method used

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  • Fluidized bed and molten bed combination type coal catalytic gasification reaction apparatus and fluidized bed and molten bed combination type coal catalytic gasification reaction method
  • Fluidized bed and molten bed combination type coal catalytic gasification reaction apparatus and fluidized bed and molten bed combination type coal catalytic gasification reaction method
  • Fluidized bed and molten bed combination type coal catalytic gasification reaction apparatus and fluidized bed and molten bed combination type coal catalytic gasification reaction method

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Experimental program
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Effect test

Embodiment 1

[0046] A combined fluidized bed and molten bed catalytic gasification device, the inner diameter of the dense phase section of the fluidized bed is 0.2m, the height is 5m, the inner diameter of the dilute phase section is 0.3m, and the height is 6m, and the angle between the inclined surface of the gas distributor and the horizontal plane is 30°, there are air holes on the conical surface of the gas distributor, the air holes are evenly arranged 10 times along the circumference, and the opening rate is 2%. The inner diameter of the throat is 0.1m, the inner diameter of the gasification section of the lower molten bed is 0.8m, and the height is 2m. There are two layers of gasification agent nozzles arranged at equal intervals around the periphery. The inner diameter of the slag mouth is 0.3m.

[0047] In the experiment, Inner Mongolia lignite was mixed with 10% potassium carbonate catalyst, and fed into the fluidized bed gasification section from the raw material inlet, and the...

Embodiment 2

[0049] A combined fluidized bed and molten bed catalytic gasification device, the inner diameter of the dense phase section of the fluidized bed is 0.2m, the height is 5m, the inner diameter of the dilute phase section is 0.3m, and the height is 6m, and the angle between the inclined surface of the gas distributor and the horizontal plane is 30°, there are air holes on the conical surface of the gas distributor, the air holes are evenly arranged 10 times along the circumference, and the opening rate is 2%. The inner diameter of the throat is 0.1m, the inner diameter of the gasification section of the lower molten bed is 0.8m, and the height is 2m. Four gasification agent nozzles are arranged in a layer at equal intervals around the periphery. The inner diameter of the slag mouth is 0.3m.

[0050] In the experiment, Inner Mongolia lignite was mixed with 10% potassium carbonate catalyst, and fed into the fluidized bed gasification section from the raw material inlet, and the cir...

Embodiment 3

[0052] A combined fluidized bed and molten bed catalytic gasification device, the inner diameter of the dense phase section of the fluidized bed is 0.2m, the height is 5m, the inner diameter of the dilute phase section is 0.3m, and the height is 6m, and the angle between the inclined surface of the gas distributor and the horizontal plane is 30°, there are air holes on the conical surface of the gas distributor, the air holes are evenly arranged 10 times along the circumference, and the opening rate is 2%. The inner diameter of the throat is 0.1m, the inner diameter of the gasification section of the lower molten bed is 0.8m, and the height is 2m. There are two layers of gasification agent nozzles arranged at equal intervals around the periphery. The inner diameter of the slag mouth is 0.3m.

[0053] In the experiment, Inner Mongolian lignite was selected, crushed to make pulverized coal less than 1mm and mixed with 10% ferric nitrate catalyst, and added to the fluidized bed g...

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Abstract

The invention relates to a fluidized bed and molten bed combination type catalytic gasification apparatus and a fluidized bed and molten bed combination type catalytic gasification method. A purpose of the present invention is to solve the problems of low carbon conversion rate, low gasification intensity, low methane yield, and poor operation stability and poor reliability of the gasification furnace in the prior art. The technical scheme of the present invention comprises that the fluidized bed and molten bed combination type catalytic gasification apparatus comprises a fluidized bed gasification section on the upper portion and a molten bed gasification section on the lower portion, the two gasification sections are connected by using a throat, a raw material inlet and a gas distributorfor introducing circulation synthesis gas are arranged on the lower portion of the fluidized bed gasification section, the inner-upper portion of the molten bed gasification section is provided witha return material inlet, and the side surface is provided with gasification agent spraying nozzles. The fluidized bed and molten bed combination type catalytic gasification method mainly comprises that a carbon-containing raw material, circulation synthesis gas and high-temperature mixed gas are subjected to pyrolysis, gasification and methanation in the fluidized bed gasification section, the incompletely-reacted semi-coke is separated and enters the molten bed gasification section, and a combustion gasification reaction is performed. With the technical scheme of the present invention, the problem in the prior art is well solved. The apparatus and the method of the present invention can be used in the coal-to-synthesis gas field.

Description

technical field [0001] The invention relates to a coal catalytic gasification reaction device and method. More specifically, the present invention designs a catalytic gasification reaction device and method combining a fluidized bed and a molten bed, and belongs to the field of coal catalytic gasification. Background technique [0002] Rich coal, poor oil, and little gas are the characteristics of my country's energy structure. With the rapid development of my country's economy and the acceleration of urbanization, the demand for natural gas is increasing. my country's own natural gas production cannot meet the demand for natural gas, and the contradiction between supply and demand has become increasingly prominent. The supply gap can only be made up by relying on imports, which has greatly affected my country's energy security. In view of the fact that my country is a large coal country with abundant coal output, converting coal into natural gas is an important way for clea...

Claims

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Application Information

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IPC IPC(8): C10J3/00C10J3/84
Inventor 金渭龙顾松园钟思青霍威
Owner CHINA PETROLEUM & CHEM CORP
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