Gas separation: processes – Liquid contacting – And recycle or reuse of contact liquid for further contact
Reexamination Certificate
2011-01-11
2011-01-11
Smith, Duane (Department: 1797)
Gas separation: processes
Liquid contacting
And recycle or reuse of contact liquid for further contact
C095S229000, C095S232000, C095S235000, C095S236000, C423S220000, C423S234000, C423S243010, C423S243060
Reexamination Certificate
active
07867322
ABSTRACT:
A gas cleaning system, which is operative for cleaning a process gas containing carbon dioxide and sulphur dioxide, comprises a combined cooling and cleaning system (16), and a CO2-absorber. The combined cooling and cleaning system (16) comprises a first gas-liquid contacting device (50) located upstream of the CO2-absorber and operative for cooling the process gas by means of a cooling liquid, and for absorbing into the cooling liquid sulphur dioxide of the process gas, such that a cooling liquid containing sulphate is obtained. The combined cooling and cleaning system (16) further comprises a second gas-liquid contacting device (94) located downstream of the CO2-absorber and operative for removing ammonia from the process gas, which has been treated in the CO2-absorber, by means of bringing the process gas containing ammonia into contact with the cooling liquid containing sulphate.
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PCT International Search Report and the Written Opinion of the International Searching Authority dated Jul. 15, 2008—(PCT/US2008/051536).
Alstom Technology Ltd
McKenzie Thomas Bennett
Olson Timothy J.
Smith Duane
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