Gas separation: processes – Solid sorption – Including reduction of pressure
Patent
1994-06-10
1996-08-20
Spitzer, Robert
Gas separation: processes
Solid sorption
Including reduction of pressure
95101, 95105, 95122, 95128, 95130, 95143, B01D 53053
Patent
active
055474926
ABSTRACT:
A method for recovering argon and hydrogen simultaneously from a feed mixture comprising argon, hydrogen, methane, nitrogen, ammonia, and moisture by passing a two stage adsorption separation (PSA). The feed gas including 4-6% hydrogen is sent to the first stage PSA to obtain a product hydrogen during the first period of adsorption step, and to obtain an intermediate product of argon and hydrogen mixture during the next period of adsorption step. The adsorbed gases are evacuated and sent to fuel gas. The intermediate product argon and hydrogen mixture is sent to the second stage adsorption bed. The effluent of adsorption step is recovered as another product hydrogen. After the adsorption step, the second stage adsorber is undergone concurrent blowdown, pressure equalization, argon recovery, argon purge, desorption production of argon, pressure equalization, pressurization with product hydrogen. Through such cyclic operation of two-stage PSA, high purity argon and hydrogen are recovered simultaneously.
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Cho Soon-Haeng
Chue Kuck-Tack
Kim Jong-Nam
Kim Kwon-Il
Lee Seng-Go
Korea Institute of Energy Research
Spitzer Robert
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