Gas separation: processes – Liquid contacting – And degasification of a liquid
Reexamination Certificate
2005-02-14
2008-12-02
Smith, Duane S (Department: 1797)
Gas separation: processes
Liquid contacting
And degasification of a liquid
C095S179000, C095S181000, C095S183000, C095S235000, C095S236000
Reexamination Certificate
active
07459011
ABSTRACT:
The natural gas arriving through pipe1is deacidified by being brought into contact with a solvent in zone C. The solvent charged with acid compounds is regenerated in zone R. The acid gases, released into pipe5upon regeneration, include a quantity of solvent. The method enables the solvent contained in the acid gases to be extracted. In zone ZA, the acid gases are brought into contact with a non-aqueous ionic liquid whose general formula is Q+A−, where Q+designates an ammonium, phosphonium, and/or sulfonium cation, and A−designates an anion able to form a liquid salt. The solvent is removed from the acid gases evacuated through pipe6. The ionic liquid charged with solvent is regenerated by heating in an evaporator DE. The ionic liquid regenerated is recycled through pipes8and9to zone ZA. The solvent is evacuated through pipe13.
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Barrere-Tricca Cecile
Cadours Renaud
Lecomte Fabrice
Magna Lionel
Antonelli, Terry Stout & Kraus, LLP.
Institut Francais du Pe'trole
Smith Duane S
Wu Ives
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