The cost of biogas purification is relatively high, requiring corresponding investment and operating expenses, as well as considering environmental protection and safety issues,
The required steam pressure, flow rate, etc. should meet the process design requirements when the molecular sieve is heated. The heating regeneration process in small air separation unit can be judged by the regeneration temperature curve.
In the unloading stage, the adsorption capacity of the molecular sieve decreases due to the pressure drop, and some of the water and carbon dioxide molecules originally adsorbed are desorbed, and the temperature drops.
In the heating stage in small air ...