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Ion membrane caustic soda production hydrogen heat exchange device and method thereof

A technology for hydrogen production and ionic membrane method, applied in electrolysis components, electrolysis process, etc., can solve problems such as easy freezing of water vapor, inaction of valves, blockage of drain pipes, etc., to ensure smooth flow, save energy consumption, and realize recycling Effect

Active Publication Date: 2020-02-21
XINJIANG ZHONGTAI CHEM CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a hydrogen heat exchange device and method for producing hydrogen by ion-exchange membrane caustic soda, which overcomes the above-mentioned deficiencies in the prior art, and can effectively solve the problem of treating hydrogen from hydrogen in the process of producing hydrogen in the ion-exchange membrane electrolyzer cathode system. When the process is transported to the hydrogen chloride synthesis unit, the water vapor contained in the hydrogen is easy to freeze, which leads to the blockage of the drain pipe, the inaction of the valve, and the fluctuation of the flow meter

Method used

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  • Ion membrane caustic soda production hydrogen heat exchange device and method thereof
  • Ion membrane caustic soda production hydrogen heat exchange device and method thereof

Examples

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Effect test

Embodiment 1

[0015] Embodiment 1, as attached figure 2 As shown, the hydrogen heat exchange device for producing caustic soda by ion membrane method includes electrolytic wet hydrogen feed pipe 1, hydrogen scrubber 2, hydrogen scrubber cooler 3, front heat exchanger 4, hydrogen compressor 5, and post-machine heat exchanger device 6 and hydrogen demister 7, hydrogen outlet of hydrogen scrubber 2, air inlet of pre-machine heat exchanger 4, gas outlet of pre-machine heat exchanger 4, air inlet of hydrogen compressor 5, hydrogen compressor The air outlet of 5, the air inlet of the after-machine heat exchanger 6, the air outlet of the after-machine heat exchanger 6, and the air inlet of the hydrogen demister 7 are sequentially connected, and the washing liquid inlet and the washing liquid outlet of the hydrogen scrubber 2 It is respectively connected with the washing liquid outlet and the washing liquid inlet of the hydrogen washing liquid cooler 3, and is characterized in that it also include...

Embodiment 2

[0016] Embodiment 2, as attached figure 2 As shown, as an optimization of Embodiment 1, a valve 13 is connected in series on the electrolytic wet hydrogen feeding pipe 1 between the second pipeline 11 and the third pipeline 12 . By setting the valve 13, an appropriate operation mode can be selected according to different working conditions.

Embodiment 3

[0017] Embodiment 3, as attached figure 2 As shown, the ion-exchange membrane caustic soda production hydrogen heat exchange method using the ion-exchange membrane caustic soda production hydrogen heat exchange device described in Example 2 has two modes of operation, mode one: valve 13 is opened, and a part of the electrolytic wet hydrogen is produced by The electrolytic wet hydrogen feeding pipe 1 is sent into the hydrogen scrubber 2, and then undergoes the cooling and washing of the hydrogen scrubber 2, the cooling of the front heat exchanger 4, the compression of the hydrogen compressor 6, the cooling of the post-machine heat exchanger 6 and the removal of hydrogen. After demisting by the mist device 7, the first pipeline 9 is sent to the refrigerant passage of the heat exchanger 8, and the other part of the electrolytic wet hydrogen is sent to the heat medium passage of the heat exchanger 8 by the electrolytic wet hydrogen feeding pipe 1 and the second pipeline 11. Insid...

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Abstract

The invention relates to the technical field for producing hydrogen through caustic soda by means of an ion membrane process, in particular to a heat exchange device and method for hydrogen produced through ionic membrane caustic soda. The device comprises an electrolytic wet hydrogen feeding pipe, a hydrogen washing tower, a hydrogen washing liquid cooler, a front heat exchanger, a hydrogen compressor, a back heat exchanger and a hydrogen demister. A coolant outlet of a heat exchanger body communicates with a hydrogen and hydrogen chloride removal synthesis pipeline. The electrolytic wet hydrogen feeding pipe communicates with a heating medium inlet of the heat exchanger body through a second pipeline. The electrolytic wet hydrogen feeding pipe between the second pipeline and the hydrogen washing tower communicates with a heating medium outlet of the heat exchanger body through a third pipeline. According to the heat exchange device and the method thereof, on the one hand, steam contained in low-temperature hydrogen exhausted by the hydrogen processing procedure is not prone to being condensed or frozen, smoothness of the pipelines and flexible action of a valve are guaranteed, and the situation that flow is fluctuated, and accordingly measurement of a flowmeter is affected is avoided; and on the other hand, energy recycling is achieved, energy consumption is reduced, meanwhile, a proper operation mode can be selected according to different working conditions, and the adaptability is high.

Description

technical field [0001] The invention relates to the technical field of hydrogen production from caustic soda by ion membrane method, and relates to a hydrogen heat exchange device and method thereof by ion membrane method for caustic soda production. Background technique [0002] In the ion membrane caustic soda production process, the cathode system of the ion membrane electrolyzer produces sodium hydroxide and hydrogen, which are separated by the suspension separator and discharged from the top. The temperature of the hydrogen produced during the production process is 60°C to 80°C. The hydrogen is sent to the hydrogen treatment process (as attached figure 1 As shown) After the hydrogen scrubber cools down and removes sodium hydroxide, the front heat exchanger, hydrogen compressor, and rear heat exchanger pressurize, cool down and demist (the temperature is controlled at about 13°C), Sent to hydrogen chloride synthesis. In Xinjiang, the temperature difference between day ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C25B1/16C25B1/02C25B15/08
CPCC25B1/02C25B1/16C25B15/08
Inventor 冯斌郝江涛孔凡锦郭新武李云华周森何朝瑞
Owner XINJIANG ZHONGTAI CHEM CO LTD