Critical and supercritical cleaning of...

Details Critical and supercritical cleaning of... Critical and supercritical cleaning of...

2007-02-13

2007-02-13

Markoff, Alexander (Department: 1746)

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

C134S010000, C134S040000, C134S042000

Reexamination Certificate

active

10066291

ABSTRACT:
A method for cleaning materials containing solids and/or liquids is disclosed which involves contacting the materials with an extracting fluid including Xe, NH3, lower aromatics, nitrous oxide, water, CO, CO2, H2O, lower alcohols, lower alkanes, lower alkenes, or mixtures or combinations thereof under conditions of temperature and pressure sufficient to maintain the fluid at, near or above its critical point and to products derived therefrom.

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patent: 5092983 (1992-03-01), Eppig et al.
patent: 6347675 (2002-02-01), Kolle
patent: 2001/0028054 (2001-10-01), Sprenger et al.
patent: WO 02/064233 (2002-08-01), None
Oil-Base Mud Drill-Cuttings Cleaner. Critical Fluid Systems, Inc. A Proposed Prototypes Developmnent Project by Critical Fluid Systems, Inc. (An Arthur D. Little Company) Cambridge, Mass. Apr. 30, 1981.
PCT International Search Resport.

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