What is a good adsorbent for purifying hydrogen produced from methanol?
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As the title suggests, this is my first time dealing with this, so I hope everyone can give me some guidance! Thank you.
In the PSA for hydrogen production from methanol, the adsorbents, from bottom to top, are alumina (in some companies, inert alumina is used at the very bottom with active alumina placed on top), activated carbon, and molecular sieves~~
Thank you very much. May I ask what type of molecular sieve it is?
It is a 5A molecular sieve; generally, CO-specific activated carbon adsorbent is also used
Hello, I would like to ask: do you know why molecular sieve dehydration doesn’t use PSA for regeneration?
Isn’t thermal-free regeneration just PSA? Generally, there are two towers: one in use and one in regeneration~~
Yeah, that’s right. Why not use PSA regeneration?
Thermoregenerative regeneration of the two towers is a type of pressure swing adsorption process~~
Hello, I would like to ask whether activated alumina absorbs water? Does activated carbon adsorb hydrocarbons? Does molecular sieve adsorb CO2? Thank you!
In the pressure swing adsorption process, molecular sieves cannot desorb moisture; therefore, molecular sieve dehydration is usually achieved through heating for regeneration, which is part of the temperature swing adsorption process.
Activated alumina is mainly used for dehydration, activated carbon is primarily used to remove carbon dioxide, and molecular sieves are mainly used to remove carbon monoxide. The capacity of the three adsorbents increases gradually.