Pressure swing adsorption process

Details Pressure swing adsorption process Pressure swing adsorption process

1994-11-30

1996-05-28

Spitzer, Robert

Gas separation: processes

Solid sorption

Including reduction of pressure

95101, 95103, 95105, 95130, 95138, B01D 53047

Patent

active

055207200

ABSTRACT:
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 and outlet-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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