Device and process for preparing hydrogen for fuel cell by using synthetic ammonia purge gas

A technology for synthesizing ammonia purge gas and fuel cell, which is applied in the direction of using solid contact hydrogen separation, hydrogen separation, diffusive hydrogen separation, etc., can solve the problems of many gas impurities, difficult removal and purification, etc., to improve the purity and achieve high purity , improve the effect of mass production

Pending Publication Date: 2021-01-29
HENAN JUNHUA DEV
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Problems solved by technology

[0004] The advantage of hydrogen production by industrial by-product hydrogen purification is that it has a wide range of hydrogen sources, low cost, and is suitable for large-scale production. The disadvantage is that there are many impurities in the gas, and it is difficult to remove and purify.

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  • Device and process for preparing hydrogen for fuel cell by using synthetic ammonia purge gas

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Embodiment Construction

[0028] Such as figure 1 As shown, the present invention discloses a device for preparing hydrogen gas for fuel cells by using the degassing of synthetic ammonia. The upper part of the buffer tank 1 is provided with a pressure measuring instrument, and the lower part of the buffer tank 1 is provided with a nitrogen purge replacement interface. The material outlet 102 of the buffer tank is connected to the material inlet 201 of the washing tower. The washing tower 2 is equipped with auxiliary equipment such as a soft water tank, water, and washing water recovery devices, and has corresponding pipelines connected to each other to ensure sufficient water during the washing process and subsequent treatment of washing water. The material outlet 202 of the washing tower is connected to the material inlet 301 of the dryer. The dryer 3 is an automatic cycle regeneration adsorption dryer, which is mainly composed of an adsorption tower, a condenser, a gas-water separator, a forced circu...

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Abstract

The invention discloses a device and process for preparing hydrogen for a fuel cell by using synthetic ammonia purge gas. The device comprises a buffer tank; a material outlet of the buffer tank is communicated with a material inlet of a washing tower; a material outlet of the washing tower is communicated with a material inlet of a dryer;; a material outlet of the dryer is communicated with a material inlet of a membrane separator; and a material outlet of the membrane separator is communicated with the material outlet of the washing tower; the material outlet of the membrane separator is communicated with a material inlet of an adsorption tower; a material outlet of the adsorption tower is communicated with a material inlet of an efficient desulfurization tower; a material outlet of theefficient desulfurization tower is communicated with a hydrogen storage tank. The process comprises the steps of buffering, washing, drying, membrane separation, pressure swing adsorption and efficient desulfurization. According to the device and the process for preparing the hydrogen for the fuel cell by utilizing the synthetic ammonia purge gas, provided by the invention, the large-scale production of fuel cell-grade hydrogen can be improved, the utilization rate of the synthetic ammonia purge gas is improved, and energy conservation, high efficiency and comprehensive application are achieved.

Description

technical field [0001] The invention belongs to the technical field of hydrogen preparation, and in particular relates to a device and a process for preparing hydrogen used in fuel cells by utilizing the exhaust gas of synthetic ammonia. Background technique [0002] Hydrogen energy is a world-recognized clean energy, and major countries in the world are actively deploying hydrogen energy industry development strategies. In recent years, my country has also continued to increase policy guidance and support for the development of the hydrogen energy industry, and proposed to regard "hydrogen energy and fuel cells" as a strategic emerging industry. The hydrogen energy industry entered the "first year of hydrogen energy" in 2018. In order to accelerate the development of the hydrogen energy industry, the "Blue Book on the Development of China's Hydrogen Energy Industry Infrastructure" compiled by the China National Institute of Standardization and the National Hydrogen Energy S...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C01B3/50C01B3/56
CPCC01B3/50C01B3/503C01B3/56
Inventor 甘世杰王恩伟牛帅李冬
Owner HENAN JUNHUA DEV
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