Pre-purification unit of cryogenic air separation unit,...

Details Pre-purification unit of cryogenic air separation unit,... Pre-purification unit of cryogenic air separation unit,...

2011-04-26

2011-04-26

Warden, Jill (Department: 1773)

Gas separation: processes

Solid sorption

Inorganic gas or liquid particle sorbed

C095S129000, C095S143000, C095S145000, C095S902000, C096S108000, C096S154000

Reexamination Certificate

active

07931736

ABSTRACT:
A hydrocarbon adsorbent that includes a zeolite with either a H-FER structure or a MOR structure in which the pore diameter has been adjusted by ion exchange. A propane adsorbent that includes a zeolite with a MFI structure. A hydrocarbon removal unit that includes a TSA pre-purification unit having a column packed with sequential layers of activated alumina, a NaX zeolite, and the hydrocarbon adsorbent. A method of reducing the hydrocarbon content within liquid oxygen inside a cryogenic air separation unit that includes purifying feed air with the above pre-purification unit.

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