Which is more appropriate for separating methane from hydrogen: membrane separation or pressure swing adsorption?
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Which is more appropriate for separating methane from hydrogen: membrane separation or pressure swing adsorption? It is a mixture of methane and hydrogen: H2: 62% ； CH4: 28%, with the remainder being CO, CO2, etc. The inlet pressure is 5.0 MPa. It is required that the concentration of CH4 in the outlet gas be greater than 90%; hydrogen is not a required component, but the pressure there must be greater than 2.0 MPa. What method would be suitable for this purpose? I would appreciate some guidance from the teachers. Thank you
To determine whether membrane separation or pressure swing adsorption is more suitable for separating methane from hydrogen, it depends on the requirements regarding production capacity and the purity level required for the separation. It’s not possible to simply state which method is better; the decision must take into account specific requirements, as well as factors such as production costs, maintenance needs, and energy consumption. It’s just my personal opinion
After separation, the pressure heads are very low; to reach 2 MPa, a compressor is needed
As per your request, pressure swing adsorption is used for solution absorption; this process allows the feedstock to be separated into two streams – high-pressure hydrogen and carbon monoxide, and low-pressure methane and carbon dioxide – after which the carbon dioxide is absorbed using an EMA solution. Methane was thus purified.
A pressure swing adsorption process will do just fine, and the investment required is not high. All methods can meet your requirements; if the client wants a more detailed plan, I can help prepare one for them.
Pressure swing adsorption presents no issues; if this method is used, hydrogen can be produced in quantities of over 20 kg. Without considering purity, high-purity methane can be obtained, though the methane is released at atmospheric pressure. If methane needs to be delivered under pressure, an additional compressor is required
A single-stage pressure swing adsorption process is completely sufficient, and the investment required is not high. All methods can meet your requirements; if the client asks for a more detailed plan, I can help prepare one. Does pressure swing adsorption in a single stage allow for the adsorption of CH4 while also adsorbing CO2? The gas also contains 10% CO+CO2; (CO+CO2)/CH4=5/14. I wonder if it’s possible to achieve a CH4 concentration of 90%
Replying to the person on floor 8: It’s just a matter of method; I didn’t say that when the gas is separated, the only product gas besides hydrogen is methane. A PSA process does not involve only two types of gases, namely those at the top and bottom of the tower; nor does it state that the yield is 100% – there are many factors that have an impact
I would like to ask: when adsorbing methane, is carbon dioxide absorbed preferentially? What kind of adsorbent are you using, and how are these two substances handled?
By asking about specific technical details, you’re indicating that you’re facing a challenge; you should conduct experiments on your own to arrive at a conclusion right away. We provide experimental equipment. 13350891007. If you are an application, someone will help you complete it. If you are a PSA industry professional, it’s best to conduct experiments yourself; that’s more reliable.
5# lsx-tzq Thank you, my email address is jh3406@126.com