Catalytic gasification device, system and method

A technology of gasification furnace and carbon monoxide, which is applied in the direction of gasification process, gasification catalyst, granular/powdered fuel gasification, etc., and can solve the problems of high oxygen consumption, low methane content, poor safety, etc.

Active Publication Date: 2017-09-19
ENN SCI & TECH DEV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The main purpose of the present invention is to provide a catalytic gasification device, system and method, which solves the problem that the oxygen-free gasification process in the prior art consumes a lot of energy when returning carbon monoxi

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  • Catalytic gasification device, system and method
  • Catalytic gasification device, system and method
  • Catalytic gasification device, system and method

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Embodiment

[0113] Divide the raw coal for coal catalytic gasification obtained above into at least three equal parts in such as Figure 8 The catalytic gasification of coal is carried out in the gasifier shown. The coal catalytic gasification process of each aliquot of coal catalytic gasification raw material coal is as follows:

[0114] see Figure 8 , the raw coal for coal catalytic gasification is transported into the gasifier 1 through the feed system 05, and at the same time, water vapor and oxygen are passed through the gas distribution plate 11 at the bottom of the gasifier 1, so that the water vapor and oxygen are mixed with the coal Coal catalytic gasification reaction occurs in the gasifier at 650-750℃ and 3-4.5MPa to generate crude gas rich in methane, carbon monoxide and hydrogen. The specific reaction process is as follows:

[0115] 2C+2H 2 O→2H 2 +2CO (1)

[0116] CO+H 2 O→CO 2 +H 2 (2)

[0117] 3H 2 +CO→CH 4 +3H 2 O (3)

[0118] 2C+O 2 →2CO (4)

[0119] C+O...

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Abstract

The invention relates to the technical field of catalytic gasification, in particular to a catalytic gasification device, system and method, solves the problems that energy consumption is higher and industry expanding is difficult due to the fact that high-temperature overheating gasifying agents are required to be provided when carbon monoxide and hydrogen are returned to a furnace for preparation of methane in an oxygen-free gasification process in the prior art, and overcomes the defects of low methane content, poor safety and high oxygen consumption in an oxygen introducing process. The catalytic gasification device comprises a gasification furnace, wherein the gasification furnace comprises a gas distributing plate and at least one gas incident pipe, a fluidized bed reaction zone is arranged above the gas distributing plate, and the gas distributing plate is used for introducing steam and oxygen into the area, close to the gas distributing plate, of the fluidized bed reaction zone; each gas incident pipe is communicated with the area, far away from the gas distributing plate, of the fluidized bed reaction zone and is used for introducing carbon monoxide and hydrogen into the area, away from the gas distributing plate, of the fluidized bed reaction zone. The catalytic gasification device is used for preparing methane through catalytic gasification.

Description

technical field [0001] The invention relates to the technical field of catalytic gasification, in particular to a catalytic gasification device, system and method. Background technique [0002] Coal catalytic gasification technology refers to the gasification reaction of coal and gasification agent (composed of water vapor, hydrogen and carbon monoxide) under the catalytic action of catalyst at a relatively low temperature to generate crude gas rich in methane. Compared with other coal gasification technologies, due to the simultaneous introduction of catalysts for coal catalytic gasification and methanation reactions, the endothermic coal gasification reaction and exothermic methanation reaction are coupled together, which can improve the energy efficiency of the system. [0003] In the existing coal catalytic gasification technology, the oxygen-free gasification process is mostly used. Specifically, the gasification agent composed of water vapor, hydrogen and carbon monoxi...

Claims

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Application Information

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IPC IPC(8): C10J3/56
CPCC10J3/56C10J2200/06C10J2300/0959C10J2300/0976
Inventor 李克忠毛燕东刘雷
Owner ENN SCI & TECH DEV
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