A kind of process and device for producing sodium hydrosulfide
A process method, sodium hydrosulfide technology, applied in chemical instruments and methods, sulfur compounds, separation methods, etc., can solve problems such as device blockage, solid waste generation, expensive desulfurization catalyst, etc., and achieve the effect of preventing thermal decomposition
Active Publication Date: 2018-04-10
CHINA PETROLEUM & CHEM CORP +1
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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
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Embodiment 1
[0072] 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%.
[0073] In embodiment 1, the first processor and the second processor adopt figure 2 , image 3 structure 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 obtai...
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Abstract
The invention provides a process method and device for producing sodium hydrosulfide. The process method uses sodium hydroxide as an absorbent, and through two-stage gas-liquid reaction and one-stage liquid-liquid reaction process, the tail gas can be discharged up to the standard, and the production conforms to the national standard. Product quality standards for chemical products. The process device of the present invention comprises a first processor, a second processor, an lye mixing tank, a process pipeline and a mechanical pump. The process and device of the invention can realize the dual goals of acid gas purification and pollutant recycling.
Description
technical field [0001] The present invention relates to a kind of using high concentration H 2 The process method and device for producing sodium hydrogen sulfide solution products from S gas belong to the field of chemical engineering, and are suitable for the comprehensive utilization of acid gas in the petrochemical field, especially for the purification of high-concentration hydrogen sulfide gas, and realize the recycling of pollutants. and production equipment. 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 cond...
Claims
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IPC IPC(8): B01D53/78B01D53/52B01D53/62C01B17/32
Inventor 彭德强李广庆王璐瑶孟凡飞陈建兵陈新王岩齐慧敏
Owner CHINA PETROLEUM & CHEM CORP