Cleaning of hydrocarbon-containing materials with critical...

Details Cleaning of hydrocarbon-containing materials with critical... Cleaning of hydrocarbon-containing materials with critical...

2007-04-10

2007-04-10

Markoff, Alexander (Department: 1746)

Cleaning and liquid contact with solids

Processes

Including regeneration, purification, recovery or separation...

C134S010000, C134S040000, C134S042000

Reexamination Certificate

active

10470965

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.

REFERENCES:
Oil-base Mud Drill-Cuttings Cleaner, CFS Inc., An Arthur D. Little Company, Cambridge, MA, Apr. 30, 1981.

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