Acidic gas condensation-cooling process and device for vacuum potassium carbonate desulphuration

A vacuum potassium carbonate and acid gas technology, which is applied in the direction of steam condensation, combustible gas purification, combustible gas purification/transformation, etc., can solve the problem of increasing load, achieve the effect of small modification, simple device structure, and reduce system load

Active Publication Date: 2015-10-21
ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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Problems solved by technology

This part of the desulfurized liquid returns to the rich liquid system and enters the regeneration tower, and the absorbed hydrogen sulfide is desorbed again, which increases the load of the regeneration (desorption) system

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  • Acidic gas condensation-cooling process and device for vacuum potassium carbonate desulphuration
  • Acidic gas condensation-cooling process and device for vacuum potassium carbonate desulphuration

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Embodiment Construction

[0023] The specific embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0024] See figure 2 , is a schematic flow chart of the acid gas condensation cooling process described in the present invention. A vacuum potassium carbonate desulfurization gas condensation and cooling process described in the present invention, the acid gas escaped from the top of the regeneration tower, after two-stage condensation-cooling-gas-liquid separation, is pumped by a vacuum pump to the Claus unit or wet contact The legal acid unit recovers sulfur or produces sulfuric acid; in the acid vapor condensers 1 and 2 of each stage, the desulfurization liquid entrained by the acid gas and the condensed liquid are separated and sent directly to the gas-liquid separator 4.

[0025] The invention overcomes the pressure difference of equipment and pipelines through the water seal height.

[0026] A vacuum potassium carbonate desulfurization gas...

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Abstract

The invention relates to an acidic gas condensation-cooling process and device for vacuum potassium carbonate desulphuration. According to the acidic gas condensation-cooling process and device, acidic gas escaped from the top of a regeneration tower is subjected to two-stage condensation-cooling-gas / liquid separation treatment, and then the treated acidic gas is pumped by a vacuum pump to a Claus unit or a wet-contact acid production unit for sulfur recovery or sulfuric acid production; in two-stage acidic gas condensers, a doctor solution and a condensed liquid contained by the acidic gas are separated out, and directly sent to a gas-liquid separator. The acidic gas condensation-cooling process and device have the advantages that the doctor solution and the condensed liquid contained by the acidic gas can be separated out before the acidic gas enters the next-stage acidic gas condenser and an acidic gas cooler, so that a vacuum condensation liquid is prevented from excessively absorbing hydrogen sulfide, and the load of a regeneration (desorption) system is reduced; meanwhile, the consumption of circulating water and low-temperature circulating water in the condensation and cooling processes can be lowered, so that energy conservation and consumption reduction is realized; the device provided by the invention can be slightly improved based on the original system, thereby being easy to realize and popularize.

Description

technical field [0001] The invention relates to the technical field of regeneration (desorption) in a vacuum potassium carbonate method gas desulfurization process, in particular to a vacuum potassium carbonate desulfurization gas condensation cooling process and a device. Background technique [0002] Vacuum potassium carbonate gas desulfurization is to use potassium carbonate solution to absorb hydrogen sulfide and hydrogen cyanide in coke oven gas. The main process is divided into two parts, namely the absorption part and the regeneration (desorption) part. [0003] 1) Absorption part: [0004] Packed desulfurization tower is adopted, coke oven gas enters from the lower part of the desulfurization tower, and contacts with the carbonate solution countercurrently from bottom to top. After the acid gases such as hydrogen sulfide and hydrogen cyanide in the gas are absorbed, the gas leaves from the top of the desulfurization tower. , sent to the follow-up process for process...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10K1/10B01D5/00
CPCB01D5/0015C10K1/10
Inventor 王嵩林张素利刘维民刘静赵虎
Owner ACRE COKING & REFRACTORY ENG CONSULTING CORP DALIAN MCC
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