Carbon dioxide cleaning and separation systems

Details Carbon dioxide cleaning and separation systems Carbon dioxide cleaning and separation systems

B - Operations, Transporting

08

B

B08B 7/00 (2006.01) A61J 1/00 (2006.01) A61J 3/06 (2006.01) B01D 11/04 (2006.01) B01D 12/00 (2006.01) B05D 1/18 (2006.01) B08B 3/10 (2006.01) B08B 7/04 (2006.01)

Patent

CA 2326585

A separation method includes (a) providing a heterogeneous separation system, the heterogeneous cleaning system comprising CO2 in a first phase and an oil in a separate second phase; (b) entraining a material to be separated in the second phase; (c) wholly or partially solubilizing the second phase in the first phase to produce a separation system in which said material to be separated is insoluble; and then (d) separating the material from the system. The separating step is preferably followed by the step of (e) recovering at least a portion of the oil. The system is useful in a variety of applications, including cleaning (particularly metal cleaning), polymerization, extraction, coating, and particle formation and treatment.

Selon cette invention, un procédé de séparation consiste en ce qui suit: (a) fournir un système de séparation hétérogène, ledit système comprenant CO¿2? dans une première phase et une huile dans une seconde phase séparée; (b) entraîner une substance à séparer dans la seconde phase; (c) solubiliser la deuxième phase, totalement ou en partie, dans la première phase afin de produire un système de séparation dans lequel la substance à séparer est insoluble; et (d) séparer ladite substance du système. Le stade de séparation est suivi, de préférence, du stade de (e) récupération d'au moins une partie de l'huile. Le système peut avoir diverses applications, y compris le nettoyage (notamment le nettoyage de métaux), la polymérisation, l'extraction, le couchage et la formation et le traitement de particules.

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