Method and apparatus for highly purifying nitric oxide for...

Details Method and apparatus for highly purifying nitric oxide for... Method and apparatus for highly purifying nitric oxide for...

2007-03-23

2010-12-14

Smith, Duane (Department: 1797)

Gas separation: processes

Solid sorption

And liquid contact

C095S149000, C095S228000, C095S229000, C095S232000, C095S129000, C095S158000, C095S227000, C096S126000, C096S134000, C096S242000, C096S266000

Reexamination Certificate

active

07850761

ABSTRACT:
There is provided an apparatus for highly purifying nitric oxide by removing impurities included in nitric oxide, which comprises: a number of dehumidifiers connected to one another in a series, to remove water and carbon dioxide from the nitric oxide; a vaporizing and liquefying unit for respectively separating impurities into a gaseous state and a liquid state by cooling the nitric oxide which passed through the dehumidifiers at sub-zero temperatures; a storage tank for storing highly purified nitric oxide separated by the vaporizing and liquefying unit; an exhaust pump for discharging gaseous impurities, separated by the vaporizing and liquefying unit, to a scrubber; an outlet for discharging liquid impurities, separated by the vaporizing and liquefying unit, to the scrubber; and the scrubber50for purifying the gaseous and liquid impurities.

REFERENCES:
patent: 2815277 (1957-12-01), Bruggeman et al.
patent: 3891410 (1975-06-01), Hankison
patent: 5670125 (1997-09-01), Sheu et al.
patent: 6370911 (2002-04-01), Zhou et al.
patent: 6387161 (2002-05-01), Zhou et al.
patent: 2004/0248006 (2004-12-01), Tsutsumi et al.
patent: WO 2007/068251 (2007-06-01), None
patent: WO 2008/076136 (2008-06-01), None

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