Electrolysis system for decomposing water into hydrogen and oxygen, and method for operating electrolysis system
An electrolysis system and decomposition technology, applied in the field of electrolysis systems, can solve problems such as unfavorable composition, drop in operating temperature of PEM electrolyzers, unfavorableness, etc., and achieve the effect of preventing cooling
Pending Publication Date: 2022-07-15
SIEMWNS ENERGY GLOBAL GMBH & CO KG
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Problems solved by technology
However, this disadvantageously results in a drop in the operating temperature of the PEM electrolyzer
In addition, part load operation of the electrolytic cell increases the aging of the electrolytic cell, which disadvantageously leads to more frequent maintenance of the electrolytic cell
Due to the partial load operation of the electrolysis cell, it can also disadvantageously result in changes in the composition of the product gases from the electrolysis
Method used
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[0026] figure 1 An electrolysis system 1 comprising four electrolysis modules 2 is shown. Each electrolysis module 2 includes a plurality of electrolysis cells 3 . The electrolytic cell 3 is arranged between the two pressure plates 4 . Pressing plates 4 press together the electrolytic cells, which in particular comprise proton exchange membranes. The pressure plates 4 arranged at the edge of the electrolysis system 1 are electrically connected by means of electrical connections 5 . Three switching devices 6 are arranged in parallel with the electrolysis modules B, C and D of the electrolysis system 1 . Here, the switching device 6 is arranged in electrical parallel with the electrolysis module 2 . In this example, each switching device 6 bridges one electrolysis module 2 . Thus, each switching device 6 is electrically connected to the pressure plate 4 delimiting the electrolysis module 2 .
[0027] In this example, the electrolysis, in particular the splitting of water i...
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The invention relates to an electrolysis system for decomposing water into hydrogen and oxygen, comprising at least two electrolysis modules, each electrolysis module comprising at least two electrolysis cells, each electrolysis cell comprising an anode chamber and a cathode chamber, and the anode chamber is separated from the cathode chamber by a proton exchange membrane, the DC-compatible switching device is arranged electrically in parallel with the at least one electrolysis module. An electrolysis system having at least two electrolysis modules is operated. In the event of a drop in the available electrical power, the at least one switching device is closed. At least one electrolysis module is bridged by the switching device. At this time, the number of electrolyzing modules operating reduces the number of bridged electrolyzing modules. In the event of an increase in the available electrical power, the at least one switching device is switched off.
Description
technical field [0001] The present invention relates to an electrolysis system for splitting water into hydrogen and oxygen and a method for operating the electrolysis system. Background technique [0002] An electrolyser is a device that uses electrical current to effect the transformation (electrolysis) of substances. According to the diversity of different electrolysis, there are also a variety of electrolyzers, such as electrolyzers for hydrogen production by electrolysis. [0003] The current idea is to use energy from renewable sources to produce valuable products during sunny days and high winds (that is, periods when solar or wind power is above average). One such valuable product can be especially hydrogen produced using water electrolyzers. Hydrogen can be used, for example, for the production of so-called EE gas. [0004] Here, first of all (hydrogen production by electrolysis) electrolyzers use electrical energy, in particular from wind or solar energy, to pro...
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Login to View More IPC IPC(8): C25B1/04C25B9/05C25B9/21C25B9/77C25B13/00C25B15/02
CPCC25B13/00C25B15/02C25B1/04C25B9/73C25B9/05Y02P20/133Y02E60/36C25B9/77C25B9/65
Inventor C·斯查彻雷E·沃尔夫
Owner SIEMWNS ENERGY GLOBAL GMBH & CO KG