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Electrochemical production of carbon monoxide and/or syngas

A carbon monoxide, synthesis gas technology, applied in the field of electrolysis systems, can solve problems such as unrecognized, industrially solved, loss, etc.

Active Publication Date: 2020-09-29
SIEMENS AG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0015] In all the production methods described, the problem is that residues of carbon dioxide, carbon monoxide and hydrogen remain in the oxygen stream and are lost in this way
However, this problem has neither been solved nor even recognized in the industry

Method used

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  • Electrochemical production of carbon monoxide and/or syngas
  • Electrochemical production of carbon monoxide and/or syngas
  • Electrochemical production of carbon monoxide and/or syngas

Examples

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Embodiment Construction

[0047] figure 1 and figure 2 An electrolysis system 100 , 200 with a mixed electrolyte circuit 114 , 214 is shown, respectively. The catholyte 16 , 26 is fed into the cathodic chamber KR and the anolyte 17 , 27 into the anode chamber. Membranes M, also called membranes (for example, ion exchange membranes or porous membranes), ensure charge transport by exchanging ionic charge carriers. The figure shows the proton H by means of a dotted arrow + passed. Membrane M also ensures that the gases formed at anode A and cathode K do not mix. In order to avoid any difference in ion type concentrations between the anolyte and catholyte, preferably the electrolyte streams 18, 28 and 19, 29 are combined in low temperature electrolysis and split again when mixing is complete.

[0048] In the example shown, a gas-liquid separation 211 is performed on the carrier gas electrolyte streams 18 , 28 and 19 , 29 . For example, the flow of liquid electrolyte is also cooled to remove waste he...

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Abstract

The invention relates to an electrolysis system and an electrolysis method. The electrolysis system comprises a pressure-electrolytic cell and a throttle in the catholyte line, by means of which the catholyte flow can be divided into a gas and liquid phase. In this way, (by-)products of the electrolysis can be recycled, while the electrolytic cell can be operated effectively at a high pressure.

Description

technical field [0001] The invention relates to an electrolysis system and an electrolysis method for producing carbon monoxide and / or synthesis gas. Background technique [0002] carbon monoxide production [0003] Currently, carbon monoxide can be produced by different methods. An example of this is the steam reforming of natural gas, in which carbon monoxide and hydrogen are formed. Carbon monoxide can also be obtained via gasification of various feedstocks such as coal, mineral oil or natural gas and their subsequent purification. [0004] Carbon monoxide can also be synthesized electrochemically from carbon dioxide. For example, this can be done in a high-temperature electrolytic cell SOEC (Solid Oxide Electrolytic Cell). Here, oxygen is formed on the anode side and carbon monoxide on the cathode side according to the following reaction equation: [0005] CO 2 ->CO+1 / 2O 2 . [0006] For example, in patent documents WO2014 / 154253A1, WO2013131778, WO2015014527,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/00C25B1/12C25B9/08C25B15/08C25B9/19
CPCY02E60/36C25B9/05C25B9/19C25B1/23C25B15/083C25B15/087C25B1/04Y02P20/129C25B15/08
Inventor B·亨切尔A·佩谢尔M·哈恩布斯G·施米德D·塔罗亚塔
Owner SIEMENS AG