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Washing apparatus for separation of methanol from gas

A technology for washing equipment and gas separation, which is applied in separation methods, gas treatment, and separation of dispersed particles, and can solve problems such as reducing separation efficiency and damaging methanol solubility

Active Publication Date: 2017-07-14
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, the heat released during the condensation and absorption of methanol impairs the solubility of methanol in water, thereby reducing the separation efficiency

Method used

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  • Washing apparatus for separation of methanol from gas
  • Washing apparatus for separation of methanol from gas
  • Washing apparatus for separation of methanol from gas

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Experimental program
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Embodiment Construction

[0048] exist figure 1 The method of the invention according to the first aspect and the washing apparatus of the invention are explained in . Via pipe 1, demineralized water is led as washing agent to heat exchanger 2 and is thereby cooled by indirect heat exchange with cooling water. Via line 3 , the cooled detergent is led to a scrubber 4 and filled into this scrubber 4 by a distribution device shown schematically in the figure. By gravity, the detergent then flows through the mass transfer zone 6 which acts as a packed bed. In the mass transfer zone 6, an intensive contact between the scrubbing agent and the methanol-laden gas stream to be purified is achieved due to the high specific surface of the packed bed. During the absorption of methanol in the detergent, the enthalpy of dissolution is released and the detergent is heated accordingly.

[0049] After leaving the mass transfer area 6 , the scrubbing agent, now partially laden with methanol, reaches the separation d...

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Abstract

Provided a washing apparatus for separation of methanol from gas. According to the invention, a washing apparatus and process for the efficient separation and recovery of methanol from waste gases loaded with methanol are proposed, wherein the invention also can be used in an integrated flow chart for the production and processing of methanol. The methanol fractions separated from the waste gases are recovered within the already existing, distillative processing of the crude methanol to pure methanol, so that no separate apparatuses are required for the recovery of the methanol from the loaded scrubber waste waters. The valuable substance methanol is recovered and the impact on the environment is reduced. By particular aspects of the invention the total degree of methanol separation can be adapted according to the locally applicable emission limit values.

Description

technical field [0001] The invention relates to a scrubbing plant which separates methanol from gases, in particular from synthetic process off-gases, by means of water scrubbing, and further processes the methanol. Furthermore, the present invention includes a method for separating and recovering methanol from gas by washing with water using the scrubbing apparatus. Background technique [0002] The production of methanol by catalytic conversion of synthesis gas containing hydrogen and carbon oxides has long been known to those skilled in the art. For example, in "Ullmann's Encyclopedia of Industrial Chemistry" (Sixth Edition, 1998 Electronic Release), subchapter 5.2 "Synthesis" of the chapter "Methanol", various basic processes for the production of methanol are described. [0003] A more advanced two-stage process for the production of methanol is known, for example, from EP 0 790 226 B1. Methanol is produced in a cyclic process in which first a mixture of fresh and par...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C31/04C07C29/76
CPCC07C29/76C07C31/04B01D53/1487B01D2252/103B01D2256/10B01D2256/16B01D2257/704B01D5/0063B01D53/185B01D2257/70B01D2258/02C07C29/1518
Inventor 马丁·拉文托斯托比亚斯·厄尔曼约尔格·奥特本杰明·努里
Owner LAIR LIQUIDE SA POUR LETUDE & LEXPLOITATION DES PROCEDES GEORGES CLAUDE
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