Electrolysis system for preparing arsine by electrolysis method

An electrolysis system and electrolysis technology, which is applied in the field of electronic gas preparation, can solve problems such as unstable arsine gas flow, and achieve the effects of ensuring safe and stable operation, stable gas flow, and stable quality

Pending Publication Date: 2020-05-08
紫石能源有限公司
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Problems solved by technology

[0009] The main purpose of the present invention is to provide an electrolysis system for producing arsine by electrolysis, so as to solve the problem of unstable gas flow rate of arsine in the process of producing arsine by electrolysis in the prior art

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Embodiment Construction

[0031] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0032] As analyzed in the background technology of this application, the pressure difference between the anode chamber and the cathode chamber in the prior art is unstable, and when the pressure between the cathode chamber and the anode chamber is too high, the ion semipermeable membrane can be blown directly, or the ion semipermeable membrane can be blown in a small range. The fluctuation of the pressure difference in the interior will also cause the repeated expansion and contraction of the ion semi-permeable membrane between the cathode chamber and the anode chamber, which is easily ruptured due to fatigue, resulting in the gas mixing of the cathode chamber and the anode chamber, which in tur...

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Abstract

The invention provides an electrolysis system for preparing arsine by an electrolysis method. The electrolysis system comprises: an electrolytic cell having a cathode chamber and an anode chamber separated by an ion semipermeable membrane, wherein the cathode chamber electrolyzes to generate arsine and hydrogen, and the anode chamber electrolyzes to generate oxygen; a cathode gas conveying pipeline connected with the cathode chamber; an anode gas conveying pipeline connected with the anode chamber; and a first pressure difference sensor arranged between the cathode gas conveying pipeline and the anode gas conveying pipeline and used for monitoring the pressure difference of the anode chamber and the cathode chamber. According to the invention, the pressure difference of the anode chamber and the cathode chamber is monitored by the first pressure difference sensor, and when the pressure difference exceeds the limit, the gas pressure in the anode chamber and/or the cathode chamber is adjusted, wherein the adjusting comprises: adjusting gas flow velocity, voltage and the like to avoid the ion semipermeable membrane from being damaged by excessive pressure difference, so that the stable quality of the gas generated by and flowing out of the cathode chamber is ensured, and the stability of the gas flow in subsequent application is ensured without deep purification so as to ensure the safe and stable operation of the system.

Description

technical field [0001] The invention relates to the field of electron gas preparation, in particular to an electrolysis system for preparing arsine by electrolysis. Background technique [0002] Today, with the rapid development of semiconductor industry, solar energy industry, LED industry, flat panel display industry and optical fiber industry, the range of electronic gases such as arsine is more and more widely used. Electronic gases are generally toxic gases, flammable and explosive gases, and the impurity removal and purification process is a big problem. The electrolytic method of arsine directly uses high-purity metallic arsenic or high-purity arsenic-containing raw materials, which can reduce the introduction of impurities from the raw materials and greatly simplify the purification process of arsine. Therefore, the electrolytic method of arsine is a better solution to the problem of gas supply in the future. way. [0003] The electrolytic cell for producing arsine...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C25B1/00C25B9/08C25B15/02C25B9/19
CPCC25B1/00C25B15/02C25B9/19
Inventor 闫冬升赵青松宁红锋孟亚飞南建辉
Owner 紫石能源有限公司
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