Carbon dioxide cleaning and separation systems

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

1998-04-30

2000-09-19

El-Arini, Zeinab

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

134 11, 134 13, 134 26, 210634, 210636, 210638, B08B 704, B01D 1104, B01D 1200

Patent

active

06120613&

ABSTRACT:
A separation method includes (a) providing a heterogeneous separation system, the heterogeneous cleaning system including CO.sub.2 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.

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