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Acidic gas treatment process and system

An acid gas and process technology, applied in the field of chemical engineering, can solve the problems of solid waste generation, device blockage, and low purity of sulfur products, and achieve the effect of preventing Na2S crystallization and preventing excessive heat of reaction.

Active Publication Date: 2016-07-06
CHINA PETROLEUM & CHEM CORP +1
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AI Technical Summary

Problems solved by technology

This technology has problems such as expensive desulfurization catalyst, sulfur foam entrainment catalyst, low purity of sulfur product, and solid waste generation.
[0017] Acid gas is a mixed gas of hydrogen sulfide and carbon dioxide gas: in the field of petrochemical industry, acid gas is usually a mixture of hydrogen sulfide and carbon dioxide. When using alkali agent as absorbent to produce sodium sulfide or sodium hydrogen sulfide solution products, sulfide gas is usually formed. Sodium, sodium bisulfide, sodium carbonate, sodium bicarbonate and other substances, when the concentration reaches a certain value, crystallization will occur, causing the device to be blocked and continuous production cannot be realized normally

Method used

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  • Acidic gas treatment process and system
  • Acidic gas treatment process and system
  • Acidic gas treatment process and system

Examples

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Embodiment 1

[0074] use as figure 1 The process method and device shown, react with acid gas and NaOH solution as raw materials. CO in acid gas 2 The volume fraction is 7%, H 2 The volume fraction of S is 92%, and the volume fraction of hydrocarbons is 1%. The mass concentration of NaOH solution is 38%.

[0075] In embodiment 1, the first processor and the second processor adopt figure 2 , image 3structure shown. In Example 1, in the second stream of the liquid phase obtained by the first processor, the volume flow of the 21st stream accounts for 5% of the total volume flow of the second stream, and the volume flow of the 22nd stream accounts for 5% of the total volume flow of the second stream. 60% of the total volume flow of the stream; the volume flow of the 23rd stream accounts for 10% of the total volume flow of the second stream, and the volume flow of the 24th stream accounts for 25% of the total volume flow of the second stream. In the 4th stream of the liquid phase obtain...

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Abstract

The invention provides an acidic gas treatment process and system. The process uses sodium hydroxide as an absorbent, and conducts two stages of gas-liquid reaction and one stage of liquid-liquid reaction process. The invention achieves up-to-standard emission of exhaust, and produces chemical product in line with national product quality standards. The acid gas treatment system includes a first processor, a second processor, a lye mixing tank, a process piping and a pump. The invention achieves dual goals of acidic gas purification and contaminant recycling.

Description

technical field [0001] The invention relates to an acid gas treatment process and system, belongs to the field of chemical engineering, is suitable for the comprehensive utilization of acid gas in the petrochemical field, and is especially suitable for the purification of high-concentration hydrogen sulfide gas, and realizes a resource-based treatment method and production device for pollutants. Background technique [0002] Sulfur element is ubiquitous in fossil fuels. When petroleum enters the process of fine fractionation and deep processing, it forms hydrogen sulfide gas with hydrogen. This process is often accompanied by carbon dioxide gas and ammonia gas. Sulfur element also exists in the raw materials of the metallurgical industry, but because the processing process is mostly under high temperature conditions, the sulfur element is oxidized, mainly producing sulfuric acid gas. Other working conditions that generate acid gas mostly occur in the chemical production proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/78B01D53/52B01D53/62
Inventor 王璐瑶齐慧敏彭德强孟凡飞陈新陈建兵
Owner CHINA PETROLEUM & CHEM CORP
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