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Electrolyser arrangement

An electrolytic cell and electrolytic cell technology, which is applied in the field of operating electrolytic cells, can solve the problems of difficulty in product purity and dangerous concentration balance, and achieve the effect of avoiding pollution

Inactive Publication Date: 2020-05-08
SIEMENS AG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this common concentration equalization also entails certain dangers, since gaseous impurities are always present in the individual electrolyte liquids, such gaseous impurities are produced by electrolysis and mainly consist of product gases or hydrogen and oxygen.
Furthermore, the often required product purity is made difficult due to contamination of the product with hydrogen or oxygen

Method used

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Embodiment Construction

[0028] figure 1 An electrolytic cell arrangement 2 is schematically illustrated in FIG. 2 , which has an electrolytic cell 4 in which an electrolyte 5 is arranged. The electrolytic cell 4 has two electrodes, a cathode 7 and an anode 6, the cathode 7 being realized in this case in the form of a gas-permeable electrode. The two electrodes, namely the anode 6 and the cathode 7 , each adjoin an electrode chamber, wherein an electrode chamber 8 for the anode 6 and an electrode chamber 9 for the cathode 7 are distinguished. The two electrode chambers 8 , 9 are separated from each other by a membrane 10 . Electrolyte 5 is located in the electrode compartment, depending on the position of electrolyte 5 in electrolytic cell 4, if electrolyte 5 is present in electrode compartment 8 of anode 6, electrolyte 5 is called anolyte 38, and if electrolyte 5 is present in the electrode compartment 8 of cathode 7 In the electrode compartment 9 , the electrolyte 5 is then referred to as the cath...

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Abstract

The invention relates to an electrolyser arrangement with at least one electrolytic cell, comprising two electrodes, namely an anode and a cathode, each of the two electrodes being in contact with anelectrode compartment for filling with a liquid electrolyte, the two electrode compartments being separated by a membrane and a conveying device being provided, one for each of the two electrodes, forconveying the electrolyte in each case in a circuit, a cathode circuit and an anode circuit, through the electrode compartment via at least one collection vessel per circuit and back into the electrode chamber. The invention is characterised in that a device is provided outside the electrolytic cell, for conveying an auxiliary volume flow between the cathode circuit and the anode circuit.

Description

technical field [0001] The invention relates to an electrolysis cell arrangement according to claim 1 and a method for operating an electrolysis cell according to claim 12 . Background technique [0002] Significant changes can currently be observed in the energy market. In the context of energy transition planning, the use of fossil fuels, which account for most of the CO2 emissions, is reduced as much as possible. At the same time, while renewable energy can provide large amounts of power, it is not always where and when it is desired. A technical challenge is to use excess energy from carbon dioxide (CO 2 ) to produce valuable products, excess energy is generated especially when renewable energy is increasingly fed into the grid. One approach is to produce gaseous valuable products such as carbon monoxide (CO) or ethylene (C 2 h 4 )). Such a reaction occurs for example in the so-called CO 2 in the electrolytic cell. [0003] CO 2 A typical design of an electrolyz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B9/08C25B1/00C25B1/04C25B9/19C25B9/23
CPCC25B1/00C25B1/04Y02E60/36C25B9/19C25B15/08C25B9/23C25B9/73C25B3/25
Inventor M·哈恩布斯G·施米德K·梅尔策D·塔罗亚塔
Owner SIEMENS AG