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Apparatus and method for carbon dioxide electrolysis

A carbon dioxide and electrolyte technology, applied in electrolytic components, electrolytic processes, electrolytic organic production, etc., can solve problems such as difficult to reproduce on an industrial scale

Active Publication Date: 2021-04-23
SIEMENS ENERGY GLOBAL GMBH CO & KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This complex process is difficult to reproduce on an industrial scale

Method used

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  • Apparatus and method for carbon dioxide electrolysis

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Embodiment Construction

[0045] figure 1 The structure of an electrolytic cell 11, which is generally suitable for carrying out the electrolysis of carbon dioxide, is schematically shown in . In this case, an embodiment of the electrolytic cell 11 comprises at least one anode 13 with an adjoining anode space 12 , as well as a cathode 15 and an adjoining cathode space 14 . The anode compartment 12 and the cathode compartment 14 are separated by a membrane 21 . Membrane 21 is usually made of PTFE-based material. Depending on the electrolyte solution used, constructions without the membrane 21 are also conceivable, in which the pH equilibrium exceeds that of the construction with the membrane 21 .

[0046] The anode 13 and the cathode 15 are electrically connected to a voltage source 22 which is controlled by a control unit 23 . The control unit 23 can apply a protection voltage or an operating voltage to the electrodes 13 , 15 , ie the anode 13 and the cathode 15 . The anode chamber 12 of the shown ...

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Abstract

The invention relates to a device for the electrolysis of carbon dioxide comprising: - an electrolytic cell with an anode and a cathode, wherein the anode and the cathode are connected to a voltage source, wherein the cathode is designed as a gas diffusion electrode, on said cathode on a first side connected to the gas chamber and on the second side to the cathode chamber, - an electrolyte circulation circuit connected to the electrolytic cell, - a gas supply for supplying gas containing carbon dioxide into the gas chamber, characterized in that - the gas chamber has An outlet for electrolyte, carbon dioxide and electrolysis product gas, - said outlet being connected to a gas supply via a return connection, - provided with a pump device for circulating carbon dioxide and product gas in a circulation loop consisting of a gas chamber And the return connection part constitutes.

Description

technical field [0001] The invention relates to a device for the electrolysis of carbon dioxide, comprising: an electrolytic cell with an anode and a cathode, wherein the anode and the cathode are connected to a voltage source, wherein the cathode is designed as a gas diffusion electrode, on which the cathode is connected on a first side The gas chamber is connected to the cathode chamber on the second side; the electrolyte circulation circuit connected to the electrolytic cell; the gas supply for supplying gas containing carbon dioxide into the gas chamber. The invention also relates to a method for operating a plant for the electrolysis of carbon dioxide having an electrolytic cell comprising an anode and a cathode, wherein the anode and the cathode are connected to a voltage source, wherein the cathode is designed as a gas diffusion electrode, on which The gas chamber is connected on the first side and the cathode chamber is connected on the second side, wherein the carbon ...

Claims

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Application Information

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IPC IPC(8): C25B15/08C25B1/23C25B11/031C25B3/26C25B3/03C25B3/07C25B3/01C25B9/19C25B3/25C25B9/23
CPCC25B15/08C25B11/032C25B1/23C25B3/26C25B1/00C25B3/25C25B9/23C25B11/031
Inventor P.珍蒂E.马戈里C.谢勒A.塔维尔K.威斯纳-弗莱舍O.冯西卡德
Owner SIEMENS ENERGY GLOBAL GMBH CO & KG