Separation, purification and recovery process of hydrogen in industrial waste gas

A technology for industrial waste gas and hydrogen, which is applied in hydrogen separation, separation of hydrogen using solid contact, separation of hydrogen by selective and reversible absorption, etc. problems, to achieve the effect of low comprehensive use cost, increased turbulence effect, and high production safety

Pending Publication Date: 2019-03-26
INNER MONGOLIA UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, due to the special requirements of hydrogen for storage and transportation, the cost of using hydrogen for industrial enterprises remains high
In addition, in the process of using hydrogen, enterprises usually use hydrogen in the form of air flow, and the flo

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  • Separation, purification and recovery process of hydrogen in industrial waste gas
  • Separation, purification and recovery process of hydrogen in industrial waste gas

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Embodiment Construction

[0020] See attached figure 1 and 2 , the process of the present invention is based on an industrial waste hydrogen separation, purification and recovery system, which includes a waste gas pressurization device 1, a hydrogen storage alloy container, a hydrogen storage alloy container heating device 2, an exhaust device 3, a hydrogen storage device, a recovery device 4 and supporting pipeline.

[0021] The waste gas boosting device 1 mentioned above is a booster pump, which is used to fill the hydrogen storage alloy container with industrial waste gas containing hydrogen.

[0022] The above-mentioned hydrogen storage alloy container heating device 2 includes a heating wire arranged outside the hydrogen storage alloy container for heating and raising the temperature of the hydrogen storage alloy container.

[0023] The above-mentioned hydrogen storage alloy container includes a housing 5 having an air inlet 5-1, an exhaust port 5-2 and a hydrogen outlet 5-3, and a hydrogen stor...

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Abstract

The invention discloses a separation, purification and recovery process of hydrogen in industrial waste gas. The process comprises the following steps that A, after being pressurized by a waste gas pressurizing device, hydrogen-containing industrial waste gas is led into a hydrogen storage alloy container; B, the hydrogen storage alloy container is heated by a hydrogen storage alloy container heating device to reach the temperature of 200-400 DEG C, the temperature is kept for two hours, and then the hydrogen storage alloy container heating device stops heating; C, after the hydrogen storage alloy container is cooled to 20-200 DEG C, an exhaust device is turned on, and the exhaust device is turned off when residual gas in the hydrogen storage alloy container is discharged until pressure inthe hydrogen storage alloy container is lowered to 0.001 Mpa; and D, the hydrogen storage alloy container is heated by the hydrogen storage alloy container heating device to reach the temperature of300-450 DEG C, an exhaust valve is opened, and hydrogen released by hydrogen storage alloy in the hydrogen storage alloy container is discharged into a recovery device. The purity of the recovered hydrogen is greater than 99.999%, recovery safety efficiency is high, and the recovered gas can be reutilized.

Description

technical field [0001] The invention belongs to the field of resource recovery, in particular to the separation, purification and recovery of industrial hydrogen-containing waste gas. Background technique [0002] Under normal temperature and pressure, hydrogen is an extremely flammable, colorless, transparent, odorless and tasteless gas. Hydrogen is the gas with the lowest density known in the world. The density of hydrogen is only 1 / 14 of that of air, that is, at 0°C and under one standard atmospheric pressure, the density of hydrogen is 0.0899g / L. Hydrogen is the substance with the smallest relative molecular mass and is mainly used as a reducing agent. In industry, hydrogen is generally produced from natural gas or water gas, instead of using high energy-consuming electrolysis of water. The produced hydrogen is widely used in the cracking reaction of the petrochemical industry and the production of ammonia. Hydrogen molecules can enter the crystal lattice of many meta...

Claims

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Application Information

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IPC IPC(8): C01B3/56
CPCC01B3/0031C01B3/0052C01B3/0057C01B3/0063C01B3/0068C01B3/508C01B2203/042Y02E60/32
Inventor 赵鑫可丹丹胡锋蔡颖辛国祥宋金玲关丽丽
Owner INNER MONGOLIA UNIV OF SCI & TECH
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