Alkaline solution electrolysis hydrogen production device and hydrogen production method

Abstract

The invention discloses an alkaline solution electrolytic hydrogen production device in the field of hydrogen production devices. The alkaline solution electrolytic hydrogen production device comprises a direct current power supply, an electrolytic cell, a hydrogen separator and an oxygen separator, wherein the bottom of the electrolytic cell is provided with an alkaline solution inlet; the upper part of an anode zone of the electrolytic cell communicates with a circulating liquid inlet of the oxygen separator, and a gas phase outlet at the top of the oxygen separator communicates with the atmosphere through a valve; the upper part of a cathode zone of the electrolytic cell communicates with a circulating liquid inlet of the hydrogen separator, a gas phase outlet at the top of the hydrogen separator is connected to a hydrogen washing device, and the hydrogen washing device communicates with an inlet of a gas-water separator through a three-way valve I; circulating liquid outlets at the bottoms of the hydrogen separator and the oxygen separator communicate with the alkaline solution inlet sequentially via an alkaline solution cooler, an alkaline solution circulating pump and an alkaline solution filter; and a gas outlet of the gas-water separator is connected to a hydrogen storing tank through a three-way valve II and a drying system. A KOH or NaOH solution with a 25-30% mass concentration is used as an electrolyte. The device can safely produce hydrogen and is high in hydrogen producing efficiency, low in equipment investment and great in production continuity.

Description

Technical field [0001] The invention relates to a hydrogen production device and a production method, in particular to an electrolysis hydrogen production device and a hydrogen production method. Background technique [0002] In the prior art, there is a hydrogen production system by electrolysis of water, its application number: 201210422579.1; application date: 2012-10-30; the device includes a power supply device, an electrolysis cell, a hydrogen separator, an oxygen separator, a purification tower, and a power supply device Connected with the electrolytic cell, the hydrogen separator and the oxygen separator are respectively connected to the electrolytic cell, and the hydrogen separator and the purification tower are connected to each other. The electrolysis water hydrogen production system of the present invention electrolyzes the alkaline liquid to obtain hydrogen, and the hydrogen is purified through a purification tower to obtain high-purity hydrogen. [0003] There is als...

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Problems solved by technology

[0004] The shortcomings of the existing technology are: the existing hydrogen production system mainly solves the problem of how to produce hydrogen theoretically, but cannot be used in production practice. It fails to solve the problem of hydrogen impurity in the initial state. How to efficiently The problem of washing hydrogen, its electrolysis efficiency is not high, the hydrogen production process is inconvenient to control, and the continuity of production is poor

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