| US 7,459,134 B2 | ||
| Method of decarbonating a combustion fume with extraction of the solvent contained in the purified fume | ||
| Renaud Cadours, Francheville (France); Fabrice Lecomte, Paris (France); Lionel Magna, Lyons (France); and Cécile Barrere-Tricca, Soucieu en Jarrest (France) | ||
| Assigned to Institut Francais du Petrole, | ||
| Filed on Jan. 23, 2006, as Appl. No. 11/336,888. | ||
| Claims priority of application No. 05 00923 (FR), filed on Jan. 28, 2005. | ||
| Prior Publication US 2006/0188423 A1, Aug. 24, 2006 | ||
| Int. Cl. B01D 53/50 (2006.01); B01D 53/56 (2006.01); B01D 53/62 (2006.01); B01D 53/78 (2006.01) | ||
| U.S. Cl. 423—210 [423/220; 423/226; 423/228; 423/235; 423/242.1; 423/242.2; 423/242.4; 423/243.01; 423/243.08; 423/246] | 15 Claims |
| 1. A method of treating a combustion fume comprising nitrogen and at least one of the acid compounds as follows: carbon oxides,
nitrogen oxides and sulfur oxides, wherein the following stages are carried out:
a) contacting the fume with a solvent capturing the acid compounds so as to obtain, on the one hand, a solvent-comprising
purified fume and, on the other hand, a solvent laden with acid compounds, and
b) contacting the solvent-comprising purified fume obtained in stage a) with a non-aqueous ionic liquid so as to obtain a
solvent-depleted purified fume and a solvent-laden ionic liquid, the ionic liquid having as general formula Q+ A−; Q+ designating an ammonium, phosphonium and/or sulfonium cation, and A− an anion likely to form a liquid salt.
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