Post-treatment method of hydrogen sulfide

A hydrogen sulfide and sulfur technology, applied in hydrogen sulfide, chemical instruments and methods, sulfur compounds, etc., can solve the problems of catalyst pollution, hydrogen sulfide gas entrainment, unfriendly continuous operation, etc.

Active Publication Date: 2021-09-14
SHANDONG XINHECHENG AMINO ACID
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The disadvantage of this method is the use of a large amount of water. At the same time, the sprayed alkaline solution droplets are easily entrained by hydrogen sulfide gas, and enter the subsequent reaction together, which needs to be further removed. This method is used to produce sulfhydryl alkaline substances It works
[0008]According to the existing hydrogen sulfide preparation technology, it is found that there are the following problems: the polysulfides that are e

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Embodiment 1 A kind of aftertreatment method of hydrogen sulfide

[0044] The sulfur obtained from the quenching tower is discharged from the liquid sulfur discharge port L, and the discharged sulfur 6 is preheated to 100°C, and enters the hydrogen sulfide reactor A through the sulfur feed pipe C, and is mixed with hydrogen and passed through the catalytic tube to obtain Hydrogen sulfide synthesis gas 1, hydrogen sulfide synthesis gas 1 is discharged from hydrogen sulfide synthesis gas outlet B at 678.35kg / h (the composition of hydrogen sulfide synthesis gas 1 is 92.44% hydrogen sulfide, 7.48% sulfur, 0.08% impurities), and the output The material temperature is 379°C, and the temperature when it enters the hydrogen sulfide quenching tower F is 375°C under the condition of pipeline insulation at 7bar;

[0045] The refluxed gaseous hydrogen sulfide 3 passes through the hydrogen sulfide liquefier G to obtain the refluxed liquid hydrogen sulfide 5, the temperature of the r...

Embodiment 2

[0050] Embodiment 2 A kind of aftertreatment method of hydrogen sulfide

[0051] The sulfur obtained from the quenching tower is discharged from the liquid sulfur discharge port L, and the discharged sulfur 6 is preheated to 100°C, and enters the hydrogen sulfide reactor A through the sulfur feed pipe C, and is mixed with hydrogen and passed through the catalytic tube to obtain Hydrogen sulfide synthesis gas 1, hydrogen sulfide synthesis gas 1 is discharged from hydrogen sulfide synthesis gas outlet B at 678.35kg / h (the composition of hydrogen sulfide synthesis gas 1 is 92.24% hydrogen sulfide, 7.41% sulfur, 0.35% impurities), and the output The material temperature is 378°C, 7bar. Under the condition of pipeline insulation and pressure preservation, the temperature when entering the hydrogen sulfide quenching tower F is 375°C;

[0052] The refluxed gaseous hydrogen sulfide 3 passes through the hydrogen sulfide liquefier G to obtain the refluxed liquid hydrogen sulfide 5, the ...

Embodiment 3

[0057] Embodiment 3 A kind of aftertreatment method of hydrogen sulfide

[0058] The sulfur obtained from the quenching tower is discharged from the liquid sulfur discharge port L, and the discharged sulfur 6 is preheated to 100°C, and enters the hydrogen sulfide reactor A through the sulfur feed pipe C, and is mixed with hydrogen and passed through the catalytic tube to obtain Hydrogen sulfide synthesis gas 1, hydrogen sulfide synthesis gas 1 is discharged from hydrogen sulfide synthesis gas outlet B at 678.35kg / h (the composition of hydrogen sulfide synthesis gas 1 is 92.24% hydrogen sulfide, 7.41% sulfur, 0.35% impurities), and the output The material temperature is 375°C, 4bar. Under the condition of pipeline insulation, the temperature when entering the hydrogen sulfide quenching tower F is 365°C;

[0059] The refluxed gaseous hydrogen sulfide 3 passes through the hydrogen sulfide liquefier G to obtain the refluxed liquid hydrogen sulfide 5, the temperature of the refluxe...

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Abstract

The invention provides a post-treatment method of hydrogen sulfide. The method comprises chilling of hydrogen sulfide synthesis gas and backflow of hydrogen sulfide. According to the invention, by selecting a chilling tower, the generation of polysulfide is avoided, the post-treatment step of the polysulfide is simplified, and the liquefaction of sulfur entrained in the hydrogen sulfide synthesis gas can be realized in one step, wherein the purity of the prepared pure hydrogen sulfide reaches 99.95%, and the polysulfide is trace; liquid-state hydrogen sulfide is selected as a low-temperature medium, and other cooling mediums are not introduced, so that secondary treatment is avoided; and in the hydrogen sulfide liquefaction process, released heat can be recycled, and heating and heat preservation of solid sulfur or a hydrogen sulfide reactor, a reaction pipeline and the like are carried out.

Description

technical field [0001] The invention relates to the field of sulfide synthesis, in particular to a method for aftertreatment of hydrogen sulfide. Background technique [0002] Hydrogen sulfide is an industrially important intermediate, for example for the synthesis of methyl mercaptan, dimethyl sulfide, dimethyl disulfide, sulfonic acid, dimethyl sulfoxide and for the reactions of many sulfides. [0003] The commonly used preparation method in industry is to react sulfur and hydrogen to obtain hydrogen sulfide, but the conversion rate of sulfur and hydrogen is relatively slow, and a catalyst is needed to achieve high conversion rate. These methods are described in US5173285, US4629617, WO8200632, US4094961 and other documents There are plenty of descriptions. Usually includes the hydrogen sulfide crude gas collected in the reactor needs to undergo single-stage or multi-stage condensation In the process of hydrogen sulfide synthesis, there are usually polysulfide H 2 Genera...

Claims

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Application Information

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IPC IPC(8): C01B17/16
CPCC01B17/168
Inventor 王志轩郎咸东黄允车荣峰张立富丁源陈聪
Owner SHANDONG XINHECHENG AMINO ACID
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