A
B
C
D
E
F
G
H
I
J
K
L
M
N
O
P
Q
R
S
T
U
V
W
X
Y
Z
Pressure swing adsorption
Also known as: PSA
Pressure swing adsorption is a common method for purifying hydrogen in a refinery by removing other hydrocarbon gases.
The PSA unit uses a molecular sieve to adsorb hydrocarbons other than hydrogen, resulting in a purified hydrogen stream. Pressure is used to release the adsorbed hydrocarbons once the hydrogen has been separated.