Extraction method

Details Extraction method Extraction method

B - Operations, Transporting

01

D

B01D 11/04 (2006.01) C01B 17/92 (2006.01)

Patent

CA 2231657

An extraction method is disclosed, wherein organic impurities are removed from a phase essentially comprising sulfuric acid, by means of supercritical or liquid carbon dioxide. In particular, the spent sulfuric acid from a process for production of alkylate fuel may be regenerated for re-introduction into the process without incineration.

L'invention se rapporte à un procédé d'extraction dans lequel des impuretés organiques sont éliminées d'une phase, comprenant essentiellement de l'acide sulfurique, au moyen d'un dioxyde de carbone surcritique ou liquide. En particulier, l'acide sulfurique usé provenant d'un processus de production de combustible d'alkylat peut être régénéré pour être réintroduit dans le processus sans incinération.

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