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Coal gas washing, dedusting and purifying process

A purification process and gas washing technology, which can be used in gas dust removal, combustible gas purification, combustible gas purification/reconstruction, etc., can solve problems such as unclean purification and unclean dust removal, and achieve small maintenance workload, low investment and processing cost, The effect of improving the comprehensive utilization rate

Active Publication Date: 2012-12-05
SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of unclean dust removal and unclean purification in the traditional gas washing process, the present invention provides a gas washing and dust removal purification process

Method used

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  • Coal gas washing, dedusting and purifying process

Examples

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Effect test

Embodiment 1

[0010] A coal gas washing and dust removal purification process, the process is achieved by the following steps: a. Pass the dust-laden gas into the dust-removing scrubber 1, make the dust-laden gas contact with the cooling water in the upper part of the dust-removing scrubber 1 for countercurrent washing, and then countercurrently contact with the purified water at the top of the dust-removing scrubber 1 for further washing and dedusting; b. The waste water after dedusting and washing flows into the sedimentation tank 2 through the bottom of the dedusting and washing tower 1 for precipitation, and the settled water flows into the hot water pool 3, and then flows into the cooling water tower 5 through the hot water pump 4 for cooling, and the cooled water enters the cooling water tank. The pool 6 is divided into two roads, one of which is driven into the upper part of the dust removal washing tower 1 by the cold water pump 7 for recycling, and the other road is purified by the ...

Embodiment 2

[0012] A coal gas washing and dust removal purification process, the process is achieved by the following steps: a. Pass the dust-laden gas into the dust-removing scrubber 1, make the dust-laden gas contact with the cooling water in the upper part of the dust-removing scrubber 1 for countercurrent washing, and then countercurrently contact with the purified water at the top of the dust-removing scrubber 1 for further washing and dedusting; b. The waste water after dedusting and washing flows into the sedimentation tank 2 through the bottom of the dedusting and washing tower 1 for precipitation, and the settled water flows into the hot water pool 3, and then flows into the cooling water tower 5 through the hot water pump 4 for cooling, and the cooled water enters the cooling water tank. The pool 6 is divided into two roads, one of which is driven into the upper part of the dust removal washing tower 1 by the cold water pump 7 for recycling, and the other road is purified by the ...

Embodiment 3

[0014] A coal gas washing and dust removal purification process, the process is achieved by the following steps: a. Pass the dust-laden gas into the dust-removing scrubber 1, make the dust-laden gas contact with the cooling water in the upper part of the dust-removing scrubber 1 for countercurrent washing, and then countercurrently contact with the purified water at the top of the dust-removing scrubber 1 for further washing and dedusting; b. The waste water after dedusting and washing flows into the sedimentation tank 2 through the bottom of the dedusting and washing tower 1 for precipitation, and the settled water flows into the hot water pool 3, and then flows into the cooling water tower 5 through the hot water pump 4 for cooling, and the cooled water enters the cooling water tank. The pool 6 is divided into two roads, one of which is driven into the upper part of the dust removal washing tower 1 by the cold water pump 7 for recycling, and the other road is purified by the ...

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Abstract

The invention relates to a coal gas washing process, in particular to a coal gas washing, dedusting and purifying process. The process can solve the problems of non-complete dedusting and non-complete purification of the traditional coal gas washing process. The coal gas washing, dedusting and purifying process is realized by adopting the following steps: a) introducing coal gas containing dust into a dedusting and washing tower; b) leading waste water after dedusting and washing to flow into a sedimentation tank for sedimentation via the tower bottom of the dedusting and washing tower; c) leading the coal gas after washing to enter into a purifying and washing tower, thereby being in countercurrent contact with circulating water at the upper part of the purifying and washing tower for washing and then further being in countercurrent contact with desalted water at the tower top of the purifying and washing tower for further washing and purifying; and d) leading the water after purifying and washing to flow into a circulating tank via the tower bottom of the purifying and washing tower and then leading the water to be divided into two lines. The coal gas washing, dedusting and purifying process can effectively solve the problems of non-complete dedusting and non-complete purification of the traditional coal gas washing process and is suitable for coal gas washing during the coal gas making process.

Description

technical field [0001] The invention relates to a gas washing process, in particular to a gas washing, dust removal and purification process. Background technique [0002] In the process of producing coal gas by reacting coal with oxygen steam or air steam, a certain amount of coal powder particles will be entrained in the coal gas, and there will also be a very small amount of ammonia, cyanide, benzene, etc. After recovering the sensible heat, it is necessary to carry out Gas scrubbing to meet process requirements. The traditional gas washing process is that the gas enters the washing tower and contacts the washing water added at the top of the tower. The dust in the gas is washed by the washing water and then enters the washing water. The washing water is discharged from the washing tower and enters the sedimentation tank. Time, so that most of the dust contained in the water is deposited, the qualified washing water enters the hot water pool, and after being pressurized ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C10K1/10C10K1/02
Inventor 方林木曹永坤
Owner SHANXI JINCHENG ANTHRACITE COAL MINING GRP CO LTD
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