Two-step pressure swing adsorption separation method of multicomponent gas containing hydrogen and hydrogen sulfide

A pressure swing adsorption, hydrogen sulfide technology, used in separation methods, chemical instruments and methods, dispersed particle separation, etc.

Inactive Publication Date: 2012-08-08
何巨堂
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0020] Method of the prese

Method used

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  • Two-step pressure swing adsorption separation method of multicomponent gas containing hydrogen and hydrogen sulfide
  • Two-step pressure swing adsorption separation method of multicomponent gas containing hydrogen and hydrogen sulfide
  • Two-step pressure swing adsorption separation method of multicomponent gas containing hydrogen and hydrogen sulfide

Examples

Experimental program
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Effect test

Embodiment 1

[0114] The No. 1 raw coal gas whose composition is shown in Table 1 completed the expected deoxygenation reaction and carbon monoxide shift reaction, and the shift gas obtained was used as a raw material gas for the hydrogen production process by pressure swing adsorption.

[0115] Since No. 1 raw coal gas contains tar and other impurities, in order to prolong the life of the conversion catalyst and improve the efficiency of the PSA pressure swing adsorption hydrogen extraction adsorbent, etc., the tar and other impurities are removed before entering the reactor of the conversion process. The method adopted is For pressure swing adsorption separation, activated carbon adsorbents are usually used to absorb impurities such as tar. The desorption method is a combination of decompression desorption, heating desorption and flushing desorption. The flushing gas comes from the exhaust gas generated during the regeneration process of the second pressure swing adsorption part.

[0116] ...

Embodiment 2

[0140] Based on Example 1, the raw coal gas produced by the same carbonization device is divided into two parts, the first part of raw coal gas GF is used as the gas source of the raw material gas F described in step 1, and the second part of raw coal gas GFF is produced through the hydrogen sulfide removal process DS to produce low sulfur Hydrogen fuel gas, the first adsorbent bed regeneration exhaust gas PG1 completes the removal of hydrogen sulfide through the dehydrogen sulfide process DS. The hydrogen sulfide removal process DS of raw gas GFF adopts the "PDS+extraction" method, and the hydrogen sulfide is finally converted into sulfur paste.

[0141] The crude gas from the semi-coke device enters the lower part of the turbulent ball raw gas desulfurization tower and contacts with the desulfurization liquid sprayed from the top of the tower. The polypropylene balls in the washing tower are constantly turbulent to increase the contact area and improve the desulfurization eff...

Embodiment 3

[0143] Based on Example 1, step ② hydrogen is used as the raw material hydrogen gas of HP in the hydroconversion process of medium and low temperature coal tar LF distillate oil, and the hydrogen sulfide-containing gas produced in the hydrogenation conversion process HP is removed through the hydrogen sulfide removal process HPDS, step ① The regeneration exhaust gas PG1 of the first adsorbent bed is removed through the hydrogen sulfide removal process HPDS to complete the removal of hydrogen sulfide.

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Abstract

A two-step pressure swing adsorption separation method of multicomponent gas containing hydrogen and hydrogen sulfide is adopted to divided raw gas into a hydrogen sulfide-rich first adsorbent bed regenerative vent gas (which is easy for further desulfhydrylation), a second purified gas composed of high-purity hydrogen and a second adsorbent bed regenerative vent gas containing low concentration of hydrogen sulfide, high concentration of carbon dioxide and inflammable gas (suitable for serving as carbon dioxide gas source or fuel gas in the crude phenol preparation process by sodium phenolate decomposition). The invention can realize large-range integrated combination technology with the combination of hydrogen production, desulphurization and tail gas utilization processes by conversion of raw gas into produced gas and processes of low medium temperature coal tar fractionation, crude phenol preparation by carbon dioxide decomposition method, coal tar distillate oil hydrogenation modification and its gas stream desulfhydrylation and the like, and can build complete resource comprehensive utilization industrial chain.

Description

technical field [0001] The invention relates to a two-step pressure swing adsorption separation method for multi-component gas containing hydrogen and hydrogen sulfide. The raw material gas passes through the first pressure swing adsorption part to obtain a first purified gas for removing hydrogen sulfide and a sulfur-rich gas. Hydrogen first adsorbent bed regeneration exhaust gas, the first purified gas passes through the second pressure swing adsorption part to obtain a second purified gas composed of high-purity hydrogen and a low concentration of hydrogen sulfide, high concentration of carbon dioxide, containing combustible gas Second adsorbent bed regeneration exhaust gas; in particular, the present invention relates to a two-step pressure swing adsorption separation process of low-temperature transformation of raw coal gas to generate gas, the first adsorbent bed regeneration exhaust gas is easy to further dehydrogen sulfide, the second The second adsorbent bed regenerat...

Claims

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Application Information

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IPC IPC(8): B01D53/047
Inventor 何巨堂
Owner 何巨堂
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