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Process and plant for removal of acidic gas constituents from synthesis gas containing metal carbonyls

A carbonyl compound, acid gas technology, applied in separation methods, chemical instruments and methods, hydrogen/syngas production, etc., can solve problems such as increasing space requirements

Active Publication Date: 2020-08-07
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Also disadvantageous is the increased space requirement within the gas scrubbing plant associated with the installation of the settling vessel

Method used

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  • Process and plant for removal of acidic gas constituents from synthesis gas containing metal carbonyls

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Embodiment Construction

[0036] A preferred embodiment of the process according to the invention is characterized in that, in process step e), the addition of water is carried out such that the residence time of the resulting mixture in the feed conduit is sufficient to sulphide the metals before being introduced into the methanol-water separation column At least 50%, preferably at least 90%, and most preferably at least 95% of the species are transferred from a methanol-rich environment to a water-rich environment. The above-mentioned behaviors of metal sulfide particles are observed during the transfer of metal sulfide particles from a methanol-rich environment to a water-rich environment, and all of the above-mentioned behaviors become more pronounced the more complete the metal sulfide transfer is. Consequently, the residual content of metal sulphide particles in methanol-rich environments decreases with increasing degrees of transfer, and thus the risk of fouling formation in methanol-water column...

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Abstract

The invention relates to a process for removal of unwanted, in particular acidic, gas constituents, for example carbon dioxide and hydrogen sulfide, from a crude synthesis gas containing metal carbonyls by gas scrubbing with a scrubbing medium. According to the invention water is added directly into the feed conduit of the methanol water mixture containing metal sulfides before the introduction thereof into the methanol-water separating column and / or water is injected directly into the methanol-water separating column at at least one point. This avoids deposits or encrustations of metal sulfide particles in the methanol-water separating column.

Description

technical field [0001] The present invention relates to a process for removing unwanted, in particular acid gas components such as carbon dioxide and hydrogen sulphide, from raw synthesis gas containing metal carbonyl compounds by gas scrubbing with a scrubbing medium. The invention further relates to an apparatus for carrying out such a method. Background technique [0002] Methods for removing unwanted accompanying substances from industrial crude gases by means of physical or chemical absorption or gas scrubbing are well known from the prior art. Thus, such processes can reliably remove unwanted acidic components such as carbon dioxide (CO 2 ) and hydrogen sulfide (H 2 S)), and also from the desired syngas component hydrogen (H 2 ) and carbon monoxide (CO) to remove additional components such as carbonyl sulfide (COS) and hydrogen cyanide (HCN) down to the trace range. A known and frequently employed method is the low-temperature methanol wash generally described in U...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14C10K1/16C01B3/52C10K1/08C10K1/26C10K1/00B01D3/14B01D11/02C10K1/14
CPCB01D3/14B01D53/1425B01D53/1462B01D2252/2021C01B3/52C01B2203/0415C01B2203/0475C01B2203/0485C10K1/14C10K1/16Y02P30/00Y02P70/10C01B2203/048C01B2203/0495
Inventor 阿尔弗雷德·古布林斯基索菲亚·施密特多利特·拉波尔德黛安娜-玛丽亚·戈麦斯-洛扎诺
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE