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Method of continuous purifying hydrogen generated by electrolyzing water

A technology of purifying water and water electrolysis, applied in chemical instruments and methods, electrolysis process, electrolysis components, etc., can solve the problems of air pollution, waste of hydrogen energy, etc., and achieve significant economic benefits

Inactive Publication Date: 2007-02-28
SUZHOU JINGLI HYDROGEN MAKING EQUIP
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Problems solved by technology

It can be clearly seen that the commonly used hydrogen purification devices have two major shortcomings in terms of process, equipment, and operation: one is wasting about 10% of the expensive hydrogen energy, and the other is polluting the atmospheric environment

Method used

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  • Method of continuous purifying hydrogen generated by electrolyzing water
  • Method of continuous purifying hydrogen generated by electrolyzing water

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Embodiment Construction

[0021] The hydrogen containing saturated water vapor obtained after electrolysis of water enters the zero-emission three-tower continuous hydrogen purification process system of the present invention. Firstly, the free ionized water is separated and removed by the steam-water separator 1, and then enters the deoxidizer 2 equipped with a palladium-platinum bimetallic deoxidation catalyst to remove impurity oxygen, and then enters the hydrogen cooling condenser 3 to complete the first-level dehumidification, and then performs continuous purification treatment.

[0022] As shown in Figure 2, the present invention uses three drying towers (the No. I tower 13, the No. II tower 14, the No. III tower 15), three regeneration coolers (the No. I regeneration cooler 10, the II regeneration cooling device 11, III regenerative cooler 12) and corresponding inlet and outlet valves (I automatic valve 4, II automatic valve 5, III automatic valve 6, IV automatic valve 7, V automatic valve 8, VI ...

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Abstract

The invention provides the method for purifying electrolytic hydrogen. The method continuous dries electrolytic hydrogen with three drying tower, and every work cycle has three stages: when electrolytic hydrogen enters into I drying tower, the 10%-15% output hydrogen is divided to II drying tower, the waste hydrogen from II drying tower is cooled and put into III drying tower, the high-purity hydrogen from III drying tower is merged with the 90%-85% hydrogen from I drying tower, and the other two stages are similar with it. A cycle is72 hours, and switching operation is per 24 hours. The invention has the advantages of getting high-purity hydrogen, good economic benefit and protecting the atmospheric environment.

Description

technical field [0001] The invention relates to a method for continuously purifying water and electrolyzing hydrogen, belonging to the technical field of hydrogen purification. Background technique [0002] After the water is electrolyzed, the hydrogen containing trace oxygen and saturated water vapor is obtained, and the impurity hydrogen is removed by the deoxygenator and dried by the drying tower to obtain high-purity product hydrogen. In order to achieve high-purity hydrogen, commonly used hydrogen purification devices usually adopt partial product hydrogen regeneration, and partial regeneration is mainly for continuous operation. The hydrogen purification device as shown in Figure 1 comprises two drying towers (107,108), three regenerative coolers (103,105,106), steam-water separator 101, deoxidizer 102 and two-position four-way pneumatic valve ( 104, 111) and flow meter 109; about 10% of the product hydrogen is used for regeneration, and the waste hydrogen gas is empt...

Claims

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Application Information

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IPC IPC(8): C25B1/04C01B3/50B01D53/26
CPCY02E60/366Y02E60/36
Inventor 朱同清吕国爱张碧航马军刘勇
Owner SUZHOU JINGLI HYDROGEN MAKING EQUIP
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