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Drainage process for suspension in gas purification and absorption process

An absorption process and gas purification technology, applied in chemical/physical processes, chemical methods for reacting gas medium with gas medium, chemical instruments and methods, etc., can solve problems such as hydrogen sulfide escape, pipeline blockage, etc.

Inactive Publication Date: 2011-05-25
LIAOCHENG LUXI CHEM ENG DESIGN
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

If the control is not good, the drainage time is too long, which will easily cause hydrogen sulfide to escape, and the drainage time is too short, which may block the pipeline

Method used

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  • Drainage process for suspension in gas purification and absorption process
  • Drainage process for suspension in gas purification and absorption process

Examples

Experimental program
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Effect test

Embodiment 1

[0011] Barium carbonate drainage process in exhaust gas scrubbing containing hydrogen sulfide and carbon dioxide:

[0012] The exhaust gas containing hydrogen sulfide and carbon dioxide is passed through the tower. After the barium sulfide in the barium sulfide solution in the tower reacts with carbon dioxide to completely turn into barium carbonate, the exhaust gas inlet is closed, and the automatic control valve for filling nitrogen is opened, and the nitrogen accumulated in the tower replaces hydrogen sulfide. After exiting the tower, close the gas phase valve of the tower, continue to fill the tower with nitrogen, and at the same time open the drain valve at the bottom of the tower to start discharging the barium carbonate suspension in the tower to the storage tank. Nitrogen to nitrogen escapes from the end of the drain tube, indicating that the barium carbonate suspension in the drain tube is no longer present, preventing the residual liquid from accumulating in the tube ...

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Abstract

The invention discloses a drainage process for suspension in a gas purification and absorption process. After a gas is washed by using liquid in a tower to generate suspension, nitrogen is inflated from a drainage pipe, the nitrogen ascends to displace the washed gas in the tower, and the suspension is drained from the bottom of the tower after the tower is full of the nitrogen and the pressure is raised. The nitrogen is adopted for pressure charge and drainage, namely the nitrogen is inflated into the tower at the same time of drainage, so that the liquid in the tower can be fully drained; and because the washed gas is displaced by the nitrogen, the gas does not escape during emptying, the drainage pipe has no residual liquid, and the probability of pipe blockage does not exist.

Description

technical field [0001] The invention relates to a liquid drainage process for a suspension, in particular to a liquid drainage process for producing a suspension in barium carbonate and similar substances by gas-liquid reaction. Background technique [0002] In the process of reacting gas containing hydrogen sulfide and carbon dioxide with barium sulfide solution to produce barium carbonate, the key link is to discharge the liquid from the tower, and how to solve this control point is very important. If the control is not good, the drainage time is too long, which will easily cause hydrogen sulfide to escape, and the drainage time is too short, which may block the pipeline. Contents of the invention [0003] The purpose of the present invention is to provide a suspension liquid drainage process in the process of gas purification and absorption, which can make this process very safe and reliable, thereby producing better safety and environmental protection benefits. [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01F11/18B01J12/00
Inventor 张庆喜王延峰魏传国刘吉祥陈才修
Owner LIAOCHENG LUXI CHEM ENG DESIGN
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