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Hydrogen production system and pressure regulation and control method and device of hydrogen production system

A technology of hydrogen production system and pressure value, which is applied in the field of hydrogen production system, can solve the problem of slow adjustment of local pressure in electrolyzer, achieve the effect of rapid air pressure balance and avoid damage

Active Publication Date: 2021-10-22
GLOBAL ENERGY INTERCONNECTION RES INST CO LTD +1
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  • Description
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Problems solved by technology

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of slow regulation of the local pressure of the electrolyzer in the prior art, thereby providing a hydrogen production system, a hydrogen production system System pressure control method and device

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Embodiment Construction

[0027] The technical solutions of the present invention will be clearly and completely described below in conjunction with the accompanying drawings. Apparently, the described embodiments are some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0028] In the description of the present invention, it should be noted that the terms "first", "second", and "third" are used for description purposes only, and should not be understood as indicating or implying relative importance.

[0029] In the description of the present invention, it should be noted that unless otherwise specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection or a detachable connection. ...

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Abstract

The invention provides a hydrogen production system and a pressure regulation and control method and device of the hydrogen production system. The hydrogen production system comprises a renewable energy power generation unit, an electrolytic cell, a hydrogen subunit and an oxygen subunit, and the renewable energy power generation unit is connected with the electrolytic cell; in the hydrogen subunit, one end of a hydrogen side first-stage gas-liquid separator is connected with the electrolytic cell, the other end of the hydrogen side first-stage gas-liquid separator is connected with a first hydrogen branch and a second hydrogen branch, the first hydrogen branch is connected with a hydrogen side second-stage gas-liquid separator, and the second hydrogen branch is provided with a hydrogen side first regulating valve and is connected with the atmosphere; the hydrogen side secondary gas-liquid separator is connected with a deoxidizing, dehydrating and purifying device; in the oxygen subunit, one end of an oxygen side first-stage gas-liquid separator is connected with the electrolytic cell, the other end of the oxygen side first-stage gas-liquid separator is connected with a first oxygen branch and a second oxygen branch, the first oxygen branch is connected with an oxygen side second-stage gas-liquid separator, and the second oxygen branch is provided with an oxygen side first adjusting valve and connected with the atmosphere. The gas pressure of the hydrogen side and the gas pressure of the oxygen side can be rapidly balanced.

Description

technical field [0001] The invention relates to the technical field of hydrogen production by electrolysis, in particular to a hydrogen production system, a pressure control method and a device for the hydrogen production system. Background technique [0002] The electrolysis of hydrogen from renewable energy will not emit carbon emissions. Therefore, the electrolysis of hydrogen from renewable energy will become the main trend of future development. However, the strong volatility and randomness of renewable energy will bring sudden changes in hydrogen production to the electrolytic hydrogen production system, resulting in changes in the pressure on both sides of hydrogen and oxygen in the system. For constant pressure electrolyzers, the pressure difference between the hydrogen and oxygen sides should not be too large (for example, no more than 0.5 bar), otherwise it will cause membrane damage, affect the performance of the electrolyzer, and even bring the danger of explosio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/04C25B9/00C25B15/02
CPCC25B1/04C25B9/00C25B15/02Y02E60/36Y02P20/133
Inventor 赵雪莹宋洁梁丹曦徐桂芝李根蒂彭笑东刘敏
Owner GLOBAL ENERGY INTERCONNECTION RES INST CO LTD
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