Method for producing hydrogen with high yield and high purity by reforming and transforming dry refinery gas
A refinery dry gas, high-purity technology, used in chemical instruments and methods, hydrogen and hydrogen separation, etc., can solve the problems of low hydrogen yield and low purity, and achieve catalytic efficiency, high yield, and improved yield. The effect of rate and purity
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[0038] Example 1:
[0039] Such as figure 1 As shown, the high-yield, high-purity refinery dry gas reforming method for hydrogen production described in this embodiment includes the following steps:
[0040] (1) Membrane separation: the hydrogen concentration is 25% (volume ratio), the methane concentration is 50% (volume ratio), the nitrogen concentration is 21% (volume ratio), and the concentration of C2 and above fractions is 4% (volume ratio) The dry gas of the refinery is separated by membrane, the permeate side is enriched with hydrogen, the non-permeate side is enriched with methane, ethylene, ethane and C2 and above fractions, and the non-permeate side also includes some other gases, such as a small amount of hydrogen, nitrogen, etc.;
[0041] (2) Refining and extracting hydrogen: the hydrogen enriched on the permeate side in step (1) is subjected to pressure swing adsorption under the conditions of a pressure of 1MPa and a temperature of 20°C to obtain product hydrogen, and ...
Example Embodiment
[0047] Example 2:
[0048] Such as figure 1 As shown, the high-yield, high-purity refinery dry gas reforming method for hydrogen production described in this embodiment includes the following steps:
[0049] (1) Membrane separation: the hydrogen concentration is 40% (volume ratio), the methane concentration is 35% (volume ratio), the nitrogen concentration is 22.5% (volume ratio), and the concentration of C2 and above fractions is 2.5% (volume ratio) The dry gas of the refinery is separated by membrane, the permeate side is enriched with hydrogen, the non-permeate side is enriched with methane, ethylene, ethane and C2 and above fractions, and the non-permeate side also includes some other gases, such as a small amount of hydrogen, nitrogen, etc.;
[0050] (2) Refining and extracting hydrogen: the hydrogen enriched on the permeate side in step (1) is subjected to pressure swing adsorption under the conditions of a pressure of 1.5 MPa and a temperature of 30°C to obtain product hydroge...
Example Embodiment
[0056] Example 3:
[0057] Such as figure 1 As shown, the high-yield, high-purity refinery dry gas reforming and converting method for hydrogen production described in this embodiment includes the following steps: hydrogen concentration is 40% (volume ratio), methane concentration is 30% ( Refinery dry gas with a nitrogen concentration of 27% (volume ratio) and a C2 and C2 fraction above 3% (volume ratio) is separated by membranes. The permeate side is enriched with hydrogen and the non-permeate side is enriched with methane and ethylene. For ethane and fractions above C2, the non-permeate side also includes some other gases, such as a small amount of hydrogen, nitrogen, etc.;
[0058] (2) Refining and extracting hydrogen: The hydrogen enriched on the permeate side in step (1) is subjected to pressure swing adsorption under the conditions of a pressure of 2MPa and a temperature of 40°C to obtain product hydrogen;
[0059] (3) Crude deethylene: pressure swing adsorption is performed ...
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