Adsorption pressure and adsorption temperature for hydrogen production PSA and reforming PSA
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Seeking help: What are the optimal adsorption pressure and adsorption temperature for PSA and reforming PSA systems used in hydrogen production from hydrocarbons? Is there any theoretical basis for this? Thank you very much! !
Hydrogen production from hydrocarbons falls under the category of the petrochemical industry; I’ve transferred your request accordingly. I hope that someone familiar with this area can resolve your issue as soon as possible!
There is no single optimal setting; high pressure and low temperature are favorable for adsorption, but excessive pressure leads to higher energy consumption and higher investment costs, and the useful gases remain in the dead space. Too low a temperature makes it difficult to separate water and heavier hydrocarbons. In practical PSA systems, the maximum pressure used is 60 kg (depending on the nature of the feed material), while the temperature is generally between 30 and 40 degrees. Appropriate process parameters and adsorbent ratios should be selected based on the specifications of the feed material as well as the characteristics of its components
Helium ☆ Weak Hydrogen ☆ Oxygen ☆☆ Argon ☆☆ Nitrogen ☆☆☆ Carbon monoxide ☆☆☆ Methane ☆☆☆☆ Carbon dioxide ☆☆☆☆☆☆ Ethane ☆☆☆☆☆☆ Ethylene ☆☆☆☆☆☆☆ Propane ☆☆☆☆☆☆☆ Isobutane ☆☆☆☆☆☆☆☆ Propylene ☆☆☆☆☆☆☆☆ Pentane ☆☆☆☆☆☆☆☆ Butylene ☆☆☆☆☆☆☆☆☆ Hydrogen sulfide ☆☆☆☆☆☆☆☆☆☆ Thiol ☆☆☆☆☆☆☆☆☆☆ Pentene ☆☆☆☆☆☆☆☆☆☆☆ Benzene ☆☆☆☆☆☆☆☆☆☆☆☆ Toluene ☆☆☆☆☆☆☆☆☆☆☆☆ Ethylbenzene ☆☆☆☆☆☆☆☆☆☆☆☆☆☆ Styrene ☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆ Water ☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆☆ The greater the separation coefficient, the better the separation effect!
Generally, high pressure and low temperature are favorable for adsorption, while high temperature and low pressure are favorable for desorption. Low temperatures are favorable for adsorption, but the regeneration effect must be taken into account, provided that the maximum adsorption capacity of the adsorbent is maintained. The feedstock used for reforming contains a high proportion of heavy hydrocarbons; if the temperature is too low, the regeneration effect is not good. The adsorption temperature can be increased appropriately to 45°C.
Generally, low temperatures are favorable for adsorption. The temperature is generally kept between 30 and 40 degrees Celsius. High pressure is also beneficial for adsorption, but the final pressure is determined by the inlet pressure of the new hydrogen machine
The optimal operating temperature for hydrogen production PSA is between 30 and 35 degrees Celsius, while the optimal operating temperature for reforming PSA is between 35 and 40 degrees Celsius.