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Electrochemical production of a gas comprising co with intermediate cooling of the electrolyte flow

An electrolyte and electrochemical technology, applied in the direction of electrolytic components, electrolytic process, inorganic chemistry, etc., can solve the problem of uneconomical separation of gas flow 11

Inactive Publication Date: 2020-09-29
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

for recovery of CO 2 , CO and / or H 2 The separation of the gas stream 11 is also uneconomical

Method used

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  • Electrochemical production of a gas comprising co with intermediate cooling of the electrolyte flow
  • Electrochemical production of a gas comprising co with intermediate cooling of the electrolyte flow
  • Electrochemical production of a gas comprising co with intermediate cooling of the electrolyte flow

Examples

Experimental program
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Effect test

example 1

[0104] according to image 3According to the structure of the present invention, a device with two electrolytic cells is provided in which heat exchangers are provided at the connecting means between the anolyte channels 15a, 15b and between the catholyte channels 16a, 16b, respectively. For different temperatures and flow rates of the electrolyte, Table 1 exemplarily gives the gas loss and CO in the electrochemical production of CO 2 consume. Here, the temperature can be set before the first electrolytic cell by the inlet temperature of the electrolyte, which is an aqueous electrolyte comprising a conductive salt. Here, the individual electrolytic cells have an Ag cathode as cathode and an anode comprising iridium as anode, where oxygen is generated. Use of pure CO as reactant gas 2 , with a total of not more than 25% by volume of CO and / or H 2 Carbon dioxide is also suitable as a reactant gas.

[0105] Table 1: Level 1 intercooling versus O 2 Influence of the compositi...

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Abstract

The present invention relates to a method for the electrochemical production of a gas comprising CO, in particular CO or syngas, from CO2, wherein the electrochemical production of the gas comprisingCO, in particular CO or syngas, from CO2 takes place in multiple electrolytic cells, which are arranged in series one behind the other in the direction of at least one electrolyte flow and each comprise a cathode and an anode, wherein the at least one electrolyte flow is conducted through the electrolytic cells which are arranged in series one behind the other and is intermediately cooled betweenat least two electrolytic cells which are arranged in series one behind the other. The invention also relates to a device for carrying out the method.

Description

technical field [0001] The present invention relates to a method for 2 Process for the electrochemical production of CO-containing gases, in particular CO or synthesis gas, in which the CO 2 In the electrochemical production of gas containing CO, especially CO or synthesis gas, the electrolytic cells respectively comprise a cathode and an anode, wherein the at least one electrolyte flow is conducted through the electrolytic cells arranged in series in succession, and in at least two electrolytic cells arranged in series in succession The electrolytic cells are intercooled, and the invention also relates to a device for carrying out the method. Background technique [0002] Currently, CO is produced by different methods such as steam reforming of natural gas with H 2 together, or by gasification and subsequent purification of various input materials such as coal, oil or natural gas. [0003] CO is also available from CO 2 Electrochemical synthesis in China. This can be d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B9/20C25B1/00C25B1/04C25B9/19
CPCC25B1/00C25B1/04Y02P20/129Y02E60/36C25B9/73C01B32/50C25B11/02C25B15/08C25B9/19C25B9/77C25B1/23C01B32/40C25B15/087C25B15/021C25B9/70C25B11/032
Inventor M·哈恩布斯G·施米德D·塔罗亚塔C·德尔霍梅-诺伊德克尔B·亨切尔A·佩谢尔N·舍德尔
Owner SIEMENS AG