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Coarse coal gas conversion process

A crude gas and process technology, applied in the field of coal chemical industry, can solve the problems of high energy consumption, difficult to control the depth of the shift reaction, and low energy efficiency of the shift process, and achieve the effects of reducing energy consumption, protecting from poisoning, and flexibly controlling

Inactive Publication Date: 2018-06-26
惠州市绿孔雀科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a crude gas conversion process to solve the problems of low energy efficiency, high energy consumption and difficult control of the conversion reaction depth in the existing conversion process

Method used

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  • Coarse coal gas conversion process
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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A crude gas shift process, comprising the following processes:

[0020] The saturated crude gas from the coal gasification device, the specifications and parameters are shown in Table 1. First, it enters the crude gas waste heat boiler to produce 1.0Mpa steam. After cooling down, it enters the crude gas gas-liquid separator for gas-liquid separation, and the ash, etc. Impurities are removed, and the water / gas volume ratio of the crude gas is adjusted to 0.3 at the same time, and then enters the crude gas superheater to be heated to 230°C and then enters the detoxification tank to remove Cl - , As, dust and other impurities, avoid Cl - , As, dust and other impurities poison the shift catalyst, and then enter the first shift furnace for preliminary shift reaction. The shift reaction uses CO sulfur-resistant shift reaction catalyst with a space velocity of 8000h -1 , the bed temperature is 450°C, the shifted shift gas is divided into two paths and enters the shift gas fir...

Embodiment 2

[0022] A crude gas shift process, comprising the following processes:

[0023] The saturated crude gas from the coal gasification device, the specifications and parameters are shown in Table 1. First, it enters the crude gas waste heat boiler to produce 1.0Mpa steam. After cooling down, it enters the crude gas gas-liquid separator for gas-liquid separation, and the ash, etc. Impurities are removed, and the water / gas volume ratio of the crude gas is adjusted to 0.5 at the same time, and then enters the crude gas superheater to be heated to 210°C and then enters the detoxification tank to remove Cl - , As, dust and other impurities, avoid Cl - , As, dust and other impurities poison the shift catalyst, and then enter the first shift furnace for preliminary shift reaction. The shift reaction uses CO sulfur-resistant shift reaction catalyst with a space velocity of 6000h -1 , the bed temperature is 420°C, the shifted shift gas is divided into two paths and enters the shift gas fir...

Embodiment 3

[0025] A crude gas shift process, comprising the following processes:

[0026] The saturated crude gas from the coal gasification device, the specifications and parameters are shown in Table 1. First, it enters the crude gas waste heat boiler to produce 1.0Mpa steam. After cooling down, it enters the crude gas gas-liquid separator for gas-liquid separation, and the ash, etc. Impurities are removed, and the water / gas volume ratio of the crude gas is adjusted to 0.8 at the same time, and then enters the crude gas superheater to be heated to 230°C and then enters the detoxification tank to remove Cl - , As, dust and other impurities, avoid Cl - , As, dust and other impurities poison the shift catalyst, and then enter the first shift furnace for preliminary shift reaction. The shift reaction uses CO sulfur-resistant shift reaction catalyst with a space velocity of 6000h -1 , the bed temperature is 450°C, the shifted shift gas is divided into two paths and enters the shift gas fir...

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Abstract

The invention provides a coarse coal gas conversion process, which specifically comprises that saturated coarse coal gas enters a coarse coal gas waste heat boiler, then enters a coarse coal gas gas-liquid separator, is heated by a coarse coal gas superheater, and then enters a detoxification tank to remove impurities, the impurity-removed coarse coal gas enters a first conversion furnace, a primary conversion reaction is performed, the converted gas after the conversion reaction is divided into two parts, one part enters a converted gas first waste heat boiler, the other part enters the coarse coal gas superheater, the two obtained converted gases enter a converted gas first water separator in a combined manner, the gas discharged from the converted gas first water separator is divided into two parts, one part enters a second conversion furnace, a deep conversion reaction is performed, the other part is a second conversion furnace bypass, the second conversion furnace bypass and the converted gas obtained after deep conversion enter a converted gas second waste heat boiler after the combining, the gas discharged from the converted gas second waste heat boiler enters a converted gas second water separator, and gas-liquid separation is performed to obtain the converted gas product. According to the present invention, with the coarse coal gas conversion process, the problems of low energy efficiency, high energy consumption and difficultly-controlled conversion reaction degree of the existing conversion process can be solved.

Description

technical field [0001] The invention relates to the technical field of coal chemical industry, in particular to a raw gas conversion process. Background technique [0002] In the context of increasingly tight supply in the global energy market, my country's coal chemical industry has developed rapidly, and projects such as coal-to-methanol, coal-to-olefins, and coal-to-oil projects have been fully launched. There are about hundreds of projects that have been completed or are under construction. Texaco coal-water slurry gasification, Shell pulverized coal gasification, and GSP pulverized coal gasification technologies have been introduced from abroad, and coal gasification technologies such as aerospace furnace pulverized coal gasification and Ningmei furnace pulverized coal gasification have also been developed in China. Pulverized coal gasification technology has low requirements on coal quality and high gasification efficiency, and has been vigorously promoted and appli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/16C01B3/14
CPCC01B3/14C01B3/16Y02P20/10Y02P20/129
Inventor 肖启宝
Owner 惠州市绿孔雀科技股份有限公司
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