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Assembly and method for the separation of methanol from components containing sulphur

A technology of methanol and equipment, which is applied in the field of equipment and methods for separating sulfur-containing components from loaded methanol, and can solve the problems of inability to remove mercaptan and thiophene, loss of methanol, etc.

Active Publication Date: 2019-04-30
LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, mercaptans and thiophenes cannot be removed from the methanol by this procedure
Therefore, in order to limit the mercaptan content in the methanol, a bleed stream has heretofore been continuously removed from the methanol and a make-up stream added, which results in a loss of methanol

Method used

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  • Assembly and method for the separation of methanol from components containing sulphur

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Embodiment Construction

[0017] A preferred configuration of the invention is characterized in that the stripping column comprises random or structured packing, or in that the stripping column is equipped with discs. These internals for facilitating mass transfer have been found useful and are freely available on the market.

[0018] Another preferred configuration of the invention is characterized in that the circuit for the top product comprises at least one pump for delivering the return flow. Due to possible pressure drops in the liquid separator in the circuit for the top product, also in this case condensed methanol can be sent back to the column by the pump as a return stream.

[0019] Another preferred configuration of the invention is characterized in that the circuit for the top product is also equipped with a further cooler and a further liquid separator, wherein the cooler serves to condense methanol from the stripped gas, and The liquid separator is used to separate condensed methanol fr...

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PUM

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Abstract

Plant and process for separation of sulfur-containing components, H2S, COS and mercaptans from methanol which is used as absorbent within the Rectisol process by hot regeneration of the methanol ladenin the absorption and an additional step for separation of the mercaptans from the methanol by stripping.

Description

technical field [0001] The present invention relates to a plant for separating sulfur-containing components from methanol which has been used as an absorbent for scrubbing synthesis gas, said plant comprising [0002] - a distillation column comprising a feed for introducing loaded methanol, an outlet for said methanol whose load has been removed, an outlet for an overhead product, an inlet for returning said overhead product Spouts, internals for mass transfer, heat exchangers for introducing heat into said methanol, [0003] - a circuit for said top product, said circuit comprising a heat exchanger for heat exchange between said top product before and after the condensable components of said top product have condensed out, for cooling by water to cool the overhead product, a heat exchanger for cooling the overhead product by means of a coolant circuit, and a liquid separator for separating condensate from the overhead product. [0004] The invention likewise relates to the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B01D53/14B01D3/06
CPCB01D3/06B01D53/1425B01D53/1493B01D2252/2021C10K1/16B01D19/0005B01D53/1462C10K1/004C10K1/165C10K1/26B01D2257/304B01D2257/306B01D2257/308B01D2257/504B01D3/007C10K1/04Y02P70/10B01D3/14B01D5/0003B01D5/0039B01D5/006B01D5/009
Inventor 阿尔弗雷德·古布林斯基索菲亚·施密特莎伦·科尔贝特辛卡尔·莱希纳
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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