Refrigeration – Cryogenic treatment of gas or gas mixture – Separation of gas mixture
Reexamination Certificate
2007-09-04
2007-09-04
Doerrler, William C (Department: 3744)
Refrigeration
Cryogenic treatment of gas or gas mixture
Separation of gas mixture
C062S905000, C062S624000
Reexamination Certificate
active
11134753
ABSTRACT:
The present invention provides generally a method and apparatus for purifying a liquid. More particularly, purification of a bulk liquid is performed by introducing a liquid stream to a purification vessel, which comprises both a distillation chamber for forming a purified vapor and an annular chamber for collecting a purified liquid that is condensed from the purified vapor. A refrigerant system provides thermodynamic efficiency in the purification method by directing waste heat generated in one part of the refrigerant system for heating duty in another part of the refrigerant system. The method and apparatus can be applied to producing purified carbon dioxide, nitrous oxide, ammonia and fluorocarbons.
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European Search Report; Munich; Aug. 26, 2004.
ABSTRACT; EP 0 03255107.9.
Doerrler William C
Hey David A.
The BOC Group Inc.
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