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A method for operating an electrolyzer safely and economically

An electrolyser, safe technology, applied in the field of electrolyser, can solve the problem of misleading voltage measurement results, inaccuracy, etc.

Inactive Publication Date: 2017-05-24
THYSSENKRUPP ELECTROLYSIS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0042] It is known from the prior art to relate the unnormalized measured voltage and / or the measured voltage change to U 最小 and U 最大 comparison, but this simply gives inaccurate and even misleading voltage measurements
There is currently no known definitive method using comparisons of measured specific energy and / or energy consumption changes, since the necessary individual current efficiencies of each cell element are believed to be inaccessible by direct measurement

Method used

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  • A method for operating an electrolyzer safely and economically
  • A method for operating an electrolyzer safely and economically
  • A method for operating an electrolyzer safely and economically

Examples

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Embodiment Construction

[0111] In graphical representation 9, Figure 1a shows that depending on the current density j(kA / m 2 ) voltages 10 which have been measured in a cell element of the electrolyzer. The resulting voltage regression line has reference number 11 and on the ordinate axis the voltage value U 0 . Furthermore, the voltage regression line 11 has a slope k. From the graphical representation 9 it is seen that with slope k 最小 and k 最大 and the voltage value U on the ordinate axis 0,最大 and U 0,最小 The voltage straight line 12,13. Slope k, k 最大 and k 最小 and the voltage value U 0 , U 0,最大 and U 0,最小 Represents battery cell properties such as electrode coatings, or the ohmic resistance of separators, electrolytes, and metal compartments.

[0112] The voltage straight lines 12 and 13 based on empirical values ​​indicate the boundary conditions of the safe voltage working range, that is, as long as the voltage regression line 11 extends between the voltage straight lines 12 and 13, i...

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Abstract

The invention relates to a method for determining a safe and economical current density-dependent voltage operating range and / or a specific energy consumption operating range of an electrolysis element (2) of an electrolyzer (1). In order to provide a method leading to improved voltage results and / or specific energy results, the invention proposes that the voltage operating range and / or specific energy operating range is determined according to an operating parameter assigned to the battery element (2) .

Description

technical field [0001] The invention relates to a method for operating an electrolyzer. A method is used to determine a safe and economical current density-dependent voltage and / or specific energy consumption operating range of at least one cell element of an electrolyzer. [0002] The invention also relates to an electrolyzer comprising at least one cell element. Background technique [0003] The voltage U of a cell element in an electrolyzer, as well as the applied current load, characterized as an electrolysis current with a current intensity I, are important quantities in the context of electrolysis technology, since the current or energy consumption EV of an electrolyzer depends on these physical quantities . [0004] For practical evaluation reasons, the energy consumption of an electrolyzer is usually relative to the mass of the product and is thus expressed in a proportional form. According to Bergner, "State of the art in the electrolysis of alkali metal chloride...

Claims

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Application Information

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IPC IPC(8): C25B15/02
CPCC25B15/02Y02E60/36G01R31/378G01R31/3828G01R31/3648
Inventor 兰德夫·基弗尤尔弗-史蒂芬·鲍默迪特马尔·瓦格纳迈克尔·斯特雷特伯格
Owner THYSSENKRUPP ELECTROLYSIS
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