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Technological method of purifying hydrogen of hydrogen enriched gas source

A process method and gas source technology, which is applied in the field of purifying hydrogen from a hydrogen-rich gas source, can solve the problems of strict raw material gas composition requirements, limited application range, and large equipment footprint, and achieve high product quality, wide application range, and reduced work. load effect

Active Publication Date: 2009-01-21
TONGJI UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The purpose of the present invention is to solve the existing technical problems of using membrane separation and / or pressure swing adsorption technology to purify hydrogen, which have strict requirements on raw material gas composition, limited application range, complicated process and large equipment occupation, and provide a suitable A process method for purifying hydrogen from a general-purpose hydrogen-rich gas source with a wide range, high product gas quality, and high production efficiency

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Example 1: The composition and molar content of the raw material gas are shown in Table 1, the pressure of the raw material gas is 100 kPa, and the temperature is 40°C. The raw material gas and the tail gas from the pressure swing adsorption process (i.e. desorbed gas) are mixed in the mixer (there is no desorbed gas in the initial stage), and the source pressure of the raw material gas depends on the pressure in the mixer, which has good pressure adaptability . The above-mentioned mixed gas is input into the compressor for compression. In order to achieve the required pressure, the compressor is multi-stage, and a decarbonization and dehydration adsorption tower is installed between the 2nd and 3rd stage compressors to decarbonize and dehydrate the raw material gas.

[0040] Feed gas composition and content table of table 1 embodiment 1

[0041] Raw gas composition

H 2

CO

N 2

Ar

CO 2

CH 4

O 2

CH 4 Oh

Vol...

Embodiment 2

[0053] Example 2: The basic process is as in Example 1, wherein the composition and content of the raw material gas are shown in Table 3, the pressure of the raw material gas is 100kPa, and the temperature is 40°C.

[0054] After the pressure of the mixed gas is increased to 5.0MPa, it is input into the membrane separator, and the mixed gas is subjected to membrane separation treatment to obtain permeate gas (crude hydrogen) with a pressure of 1.0MPa and non-permeate gas with a pressure of 5.2MPa (exhaust gas from the membrane separation device) , other processing parameters are identical with embodiment 1.

[0055] Raw gas composition and content of table 3 embodiment 2

[0056] Raw gas composition

H 2

CO

N 2

Ar

CO 2

CH 4

O 2

CH 4 Oh

Content (mol.%)

68.17

27.58

0.41

0.01

3.42

0.25

0.16

0.01

[0057] The composition and content of the product gas obtained th...

Embodiment 3

[0060] Example 3: The basic process is as in Example 1, wherein the composition and content of the raw material gas are shown in Table 5, the pressure of the raw material gas is 3100kPa, and the temperature is 50°C.

[0061] After the pressure of the mixed gas is increased to 6.0MPa, it is input into the membrane separator, and the mixed gas is subjected to membrane separation treatment to obtain permeated gas (crude hydrogen) with a pressure of 1.1MPa and non-permeated gas with a pressure of 5.8MPa (exhaust gas from the membrane separation device) , other processing parameters are identical with embodiment 1.

[0062] Raw gas composition and content table of table 5 embodiment 3

[0063] Raw gas composition

[0064] The composition and content of the product gas obtained through the above process are shown in Table 6, the pressure of the product gas is 800kPa, and the temperature is 40°C.

[0065] Product gas composition and content table of table 6 embodiment 3

...

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Abstract

The present invention relates to a technological process for purifying hydrogen gas by using hydrogen-rich gas source. Said process includes the following several procedures: a), raw material gas compression; b), decarbonization and dehydration; c), membrane separation; d), catalytic reaction to make deoxidation; and e), pressure swing adsorption.

Description

technical field [0001] The present invention relates to a process for purifying hydrogen, in particular to a process for purifying hydrogen from a hydrogen-rich source that uses the characteristics of membrane separation and pressure swing adsorption to combine processes to improve the purity and recovery of hydrogen extraction. Background technique [0002] Hydrogen is a widely used raw material, industrially used as raw material gas, reducing gas, cooling gas, protective gas and combustion gas, in chemical industry, petrochemical industry, metallurgy, mechanical processing, electric power, medicine, food, glass, cutting-edge technology and science In the field of research, it has a wide range of uses; at the same time, as an efficient and clean energy source, it has become the first choice for fuel cell fuel. [0003] At present, the main domestic hydrogen production methods for supplying hydrogen to the market are: hydrogen production from water gas, semi-water gas and co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C01B3/50B01D53/047B01D53/22
Inventor 王才全马建新周伟席怡宏高振平王业勤吴素娟
Owner TONGJI UNIV
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