Pressure swing adsorption process

Details Pressure swing adsorption process Pressure swing adsorption process

B - Operations, Transporting

01

D

B01D 53/047 (2006.01)

Patent

CA 2162346

The components of a gas mixture are separated by pressure swing adsorption in a plurality of adsorption vessels. In the first step of the half-cycle adsorption takes place in a first bed while the second bed undergoes countercurrent desorption. At the end of the first step the first bed is vented countercurrently and the first and second beds undergo, as a first bed equalization step, outlet-to-outlet equalization or outlet to both inlet and outlet equalization. The vent step may precede or be concurrent with the first bed equalization step.In a second equalization step the beds simultaneously undergo inlet-to-inlet andoutlet-to-outlet equalization. The second bed is then further pressurized with nonadsorbed product gas. The half cycle is then repeated but with the first bed being substituted for the second bed and vice versa.

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