Technological method of purifying hydrogen of hydrogen enriched gas source
A process method and gas source technology, applied in the field of purifying hydrogen from rich hydrogen sources, 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
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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] Raw gas composition
H 2
CO
N 2
Ar
CO 2
CH 4
O 2
CH 4 Oh
Volume content (%)
85.61
13.21
0.56
0.05
0.01 ...
Embodiment 2
[0051] 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.
[0052] 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 permeated gas (crude hydrogen) with a pressure of 1.0MPa and non-permeated gas with a pressure of 5.2MPa (exhaust gas from the membrane separation device) , other processing parameters are identical with embodiment 1.
[0053] 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
[0054] The composition and content of the product gas obtained through the above process are shown in Table 4, the pressure of th...
Embodiment 3
[0056] 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.
[0057] 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.
[0058] Raw gas composition
H 2
CO
N 2
Ar
CO 2
CH 4
O 2
CH 4 Oh
Content (mol.%)
67.17
27.58
0.41
0.01
3.42
0.25
0.15
0.01
[0059] The composition and content of the product gas obtained through the above process are shown in Table 6, the pressure of t...
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