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Coal hydrogenation catalytic gasification method and device

A technology of hydrogenation catalysis and catalytic gasification, applied in the field of coal gasification, can solve the problems of complex process and low content, achieve high economic value and improve the effect of formation rate

Active Publication Date: 2017-04-26
ENN SCI & TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a coal hydrogenation catalytic gasification method and device to solve the problem of CH at the gasifier outlet in the existing coal catalytic gasification technology. 4 Problems with low content and complicated process

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  • Coal hydrogenation catalytic gasification method and device
  • Coal hydrogenation catalytic gasification method and device
  • Coal hydrogenation catalytic gasification method and device

Examples

Experimental program
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Effect test

Embodiment 1

[0086] This embodiment provides a coal hydrogenation catalytic gasification method, the method comprises the following steps:

[0087] S1: Anthracite powder with a particle size of 6mm or less and a water content of <5% is dry mixed with a catalyst in the catalyst loading unit 1 to generate anthracite powder loaded with Fe salt, and the catalyst is Fe salt.

[0088] S2: The catalyst-loaded anthracite powder enters the hydrogenation catalytic gasification part 201, and under the action of the catalyst, the catalyst-loaded anthracite powder and the H present in the hydrogenation catalytic gasification part 202 2 Hydrocatalytic gasification reaction occurs to generate CH 4 , catalyst-rich coke and aromatic oil compounds, and the CO present in the hydrogen catalytic gasification unit 202 2 with H 2 The reaction produces CH 4 , wherein the operating pressure of the hydrocatalytic gasification reaction is 0.5 MPa, and the reaction temperature of the hydrocatalytic gasification re...

Embodiment 2

[0095] This embodiment provides a coal hydrogenation catalytic gasification method, the method comprises the following steps:

[0096] S1: Sub-bituminous coal powder with a particle size of 6mm or less and a water content of <5% and the catalyst are impregnated and partially dry-mixed in the catalyst loading unit 1 to generate sub-bituminous coal powder loaded with the catalyst. The catalyst is a mixture of Co salt and Ni salt. mixture.

[0097] S2: The sub-bituminous coal powder of the catalyst-loaded mixture enters the hydrocatalytic gasification part 201, and under the action of the catalyst, the catalyst-loaded sub-bituminous coal powder and the H present in the hydrogen catalytic gasification part 202 2 Hydrocatalytic gasification reaction occurs to generate CH 4 , catalyst-rich coke and aromatic oil compounds, and the CO present in the hydrogen catalytic gasification unit 202 2 with H 2 The reaction produces CH 4 , wherein the operating pressure of the hydrocatalytic...

Embodiment 3

[0104] This embodiment provides a coal hydrogenation catalytic gasification method, the method comprises the following steps:

[0105] S1: The pulverized coal mixture with a particle size of 6mm or less and a water content of <5% and the catalyst are impregnated and partially dry mixed in the catalyst loading unit 1 to generate a pulverized coal mixture loaded with the catalyst. The pulverized coal mixture is sub-bituminous coal powder and volatile coal powder. The mass percentage of bituminous coal powder is higher than 30%. The catalyst is a composite catalyst. The main catalyst of the composite catalyst is Fe salt, and the promoter is Mg salt. The quality of Fe salt accounts for 3% of the mass of coal powder, and the Mg salt The mass accounts for 0.2% of the mass of pulverized coal.

[0106] S2: The catalyst-loaded pulverized coal mixture enters the hydrogenation catalytic gasification part 201, and under the action of the catalyst, the catalyst-loaded coal powder mixture a...

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Abstract

The invention provides a coal hydrogenation catalytic gasification method and device and relates to the technical field of coal gasification, aiming at the problems in an existing coal catalytic gasification technology that the content of CH4 at a gas outlet of a gasification furnace is low and a process is complicated. The coal hydrogenation catalytic gasification method comprises the following steps: processing coal powder and a catalyst to generate coal powder loaded with the catalyst; under the action of the catalyst, carrying out a hydrogenation catalytic gasification reaction on the coal powder loaded with the catalyst and H2 to generate CH4 and remained coke containing the catalyst; taking CO2 and H2 to react, so as to generate CH4; under the action of the catalyst, taking the remained coke containing the catalyst and mixed gas of water steam and O2 to be subjected to a remained coke gasification reaction, so as to generate H2 and CO2; taking the coal powder loaded with the catalyst and generated H2 to be subjected to the hydrogenation catalytic gasification reaction to generate CH4 and the remained coke containing the catalyst; taking generated CO2 and H2 to react, so as to generate CH4; and repeatedly carrying out the hydrogenation catalytic gasification reaction and the remained coke gasification reaction until the remained coke containing the catalyst is converted into residues containing the catalyst, so as to obtain CH4. The coal hydrogenation catalytic gasification method provided by the invention is applied to the field of coal gasification.

Description

technical field [0001] The invention relates to the technical field of coal gasification, in particular to a coal hydrogenation catalytic gasification method and device. Background technique [0002] At present, my country's energy resources are characterized by "rich coal, less oil, and lack of gas". Converting coal into the best fuel in fossil energy - natural gas, that is, coal-to-gas technology, is suitable for my country's national conditions, resolves the energy crisis, and guarantees A shortcut to energy security. [0003] Coal catalytic gasification technology is one of the most effective process approaches in coal gasification technology. The existing coal catalytic gasification technology uses alkali metal catalysts to make coal react with water vapor at a relatively low temperature to generate H 2 , CO, generated H 2 , CO undergoes further transformation reaction under the action of alkali metal catalyst, methanation reaction finally generates CH 4 . The addit...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10B53/04C10G1/06C10L3/08
CPCC10B53/04C10G1/06C10L3/08C10J2300/0959C10J3/482C10J2300/1807C10J2300/0986C10J2300/0976C10J2300/093C10J2300/1662C10L2290/04Y02P20/141
Inventor 刘雷毛燕东李克忠
Owner ENN SCI & TECH DEV
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