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A Coal Synthesis Gas Preparation Method Coupled with Chemical Chain Oxygen Production

A synthesis gas and oxidation reactor technology, which is applied in gasification process, granular/powder fuel gasification, petroleum industry, etc., can solve the problems of small oxygen production and low energy utilization rate, achieve a good carbon-hydrogen ratio, reduce The effect of energy consumption and production cost reduction

Active Publication Date: 2021-04-23
QINGDAO UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

But this method has low energy efficiency and low oxygen production

Method used

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  • A Coal Synthesis Gas Preparation Method Coupled with Chemical Chain Oxygen Production

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Experimental program
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Effect test

Embodiment 1

[0031] The air composition in the feed is 78% nitrogen, 21% oxygen, and 1% (molar percentage) of other gases, and the feed flow rate is 3550kg / h. The reaction temperature of the oxidation reactor R1 is 797°C and the operating pressure is 20bar; the reaction temperature of the reduction reactor R2 is 1200°C and the operating pressure is 20bar; the cooling temperature of the condenser is 797°C; the operating temperature of the cracking chamber R3 is 500°C , the operating pressure is 42.35bar; the operating temperature of the combustion chamber R4 is 1300°C, the operating pressure is 42.35bar, and the obtained coal synthesis gas product is 2144.24kg / h, which contains 41.5% CO, CO 2 10.6%, H 2 O 20.0%, H 2 27.3%, H 2 S 0.3%, other composition 0.3% (mol fraction).

Embodiment 2

[0033] The air composition in the feed is 78% nitrogen, 21% oxygen, and 1% (molar percentage) of other gases, and the feed flow rate is 3550kg / h. The reaction temperature of the oxidation reactor R1 is 797°C and the operating pressure is 20bar; the reaction temperature of the reduction reactor R2 is 1200°C and the operating pressure is 20bar; the cooling temperature of the condenser is 797°C; the operating temperature of the cracking chamber R3 is 500°C , the operating pressure is 42.35bar; the operating temperature of the combustion chamber R4 is 1350°C, the operating pressure is 42.35bar, and the obtained coal synthesis gas product is 2144.24kg / h, which contains 41.9% CO, CO 2 10.3%, H 2 O 20.3%, H 2 27.0%, H 2 S 0.3%, other gases 0.2% (mol fraction).

Embodiment 3

[0035] The air composition in the feed is 78% nitrogen, 21% oxygen, and 1% (molar percentage) of other gases, and the feed flow rate is 3550kg / h. The reaction temperature of the oxidation reactor R1 is 797°C and the operating pressure is 20bar; the reaction temperature of the reduction reactor R2 is 1200°C and the operating pressure is 20bar; the cooling temperature of the condenser is 797°C; the operating temperature of the cracking chamber R3 is 500°C , the operating pressure is 42.35bar; the operating temperature of the combustion chamber R4 is 1400°C, the operating pressure is 42.35bar, and the obtained coal synthesis gas product is 2144.24kg / h, which contains 42.2% CO, CO 2 10.0%, H 2 O 20.6%, H 2 26.7%, H 2 S 0.3%, other gases 0.2% (mol fraction).

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Abstract

The invention provides a coal synthesis gas preparation method coupled with chemical chain oxygen production. The method uses CoO as an oxygen carrier, utilizes the recyclable characteristics of the oxygen carrier, uses a chemical chain method to produce oxygen, and reacts with coal-water slurry to generate synthetic gas, an important raw material in the chemical industry. Compared with the traditional cryogenic air separation oxygen production method, this method has lower energy consumption for oxygen production, reduces equipment investment and transportation costs, and avoids the waste of heat from cryogenic low temperature to high temperature above 1200°C. At the same time, the oxygen carrier It can be recycled to ensure the continuous operation of the system.

Description

【Technical field】 [0001] The invention belongs to the field of coal gasification to produce synthesis gas, and in particular relates to a method for preparing coal synthesis gas coupled with chemical chain oxygen production. 【Background technique】 [0002] Coal-to-synthesis gas refers to the process of converting the combustible part of coal into gas through chemical reaction under high temperature conditions with coal as raw material and oxygen and water vapor as gasification agent. Coal synthesis gas mainly consists of hydrogen and carbon monoxide. It can be used as industrial fuel gas, civil gas and chemical raw material gas. It is also the basis and important link of many high-tech energy sources and is of great significance to my country's social and economic development. [0003] The basic principle of the chemical chain technology is to decompose the direct contact reaction between the fuel and the air into two reactions, and use the oxygen carrier to transfer the oxy...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10J3/46
CPCC10J3/46C10J2300/0906C10J2300/093C10J2300/0956
Inventor 朱兆友于萌潇刘晓斌王英龙崔培哲
Owner QINGDAO UNIV OF SCI & TECH