Method for extracting an antihydrate contained in condensed hydrocarbons
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United States of America Patent
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Dec 30, 2008
Grant Date -
Aug 25, 2005
app pub date -
Feb 14, 2005
filing date -
Feb 13, 2004
priority date (Note) -
Expired
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Abstract
The method enables the antihydrate compounds contained in a condensed-hydrocarbon liquid feedstock arriving through pipe 1 to be extracted. The liquid feedstock is brought into contact, in zone ZA, with a non-aqueous ionic liquid having the general formula Q.sup.+ A.sup.31 , where Q.sup.+ designates an ammonium, phosphonium, and/or sulfonium cation, and A.sup.31 designates an anion able to form a liquid salt. The antihydrate compounds in the liquid hydrocarbon feedstock evacuated through pipe 2 are eliminated. The ionic liquid charged with antihydrate compounds is evacuated through pipe 3, then introduced into evaporator DE to be heated in order to evaporate the antihydrate compounds. The regenerated ionic liquid is recycled through pipes 8 and 9 to zone ZA. The antihydrates are evacuated through pipe 7a.
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