Gas separation: processes – Solid sorption – Including reduction of pressure
Reexamination Certificate
2004-05-20
2008-12-23
Lawrence, Frank M (Department: 1797)
Gas separation: processes
Solid sorption
Including reduction of pressure
C095S102000, C095S130000, C095S138000, C095S903000, C096S132000
Reexamination Certificate
active
07468096
ABSTRACT:
The present invention concerns the apparatus for producing oxygen, comprising: a first zeolite bed connected to an external air pressurizing device and a depressurizing device for increasing or decreasing an internal pressure thereof; a second zeolite bed connected to the first zeolite bed in parallel and connected to the external air pressurizing device and the depressurizing device for decreasing or increasing an internal pressure thereof, the first and second zeolite beds being arranged such that the internal pressure of the second zeolite bed is decreased when the internal pressure of the first zeolite bed is increased, and the internal pressure of the second zeolite bed is increased when the internal pressure of the first zeolite bed is decreased; and a carbon molecular sieve bed communicated in fluid with the first and second zeolite beds for receiving and adsorbing oxygen produced in the first and second zeolite beds and discharging the produced oxygen to the outside and discharging selectively some of the produced oxygen to the first zeolite bed or the second zeolite bed.
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Corless Peter F.
Daesung Industrial Gases Co., Ltd.
Lawrence Frank M
Yonsei University
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