Cleaning and liquid contact with solids – Apparatus – With plural means for supplying or applying different fluids...
Patent
1993-09-16
1995-01-03
Stinson, Frankie L.
Cleaning and liquid contact with solids
Apparatus
With plural means for supplying or applying different fluids...
1341031, 134105, 134107, 134902, B08B 310
Patent
active
053777050
ABSTRACT:
An improved precision cleaning method includes introducing a solvent to a cleaning vessel, placing a workpiece in the cleaning vessel and contacting the workpiece with the solvent during a residence period. The cleaning vessel is then pressurized to a target pressure by adding carbon dioxide to the vessel, and additional carbon dioxide is pumped into the vessel while maintaining the target pressure to flush contents of the vessel. Cleaning may be enhanced by pressurizing to above the supercritical point of the carbon dioxide, and cleaning is further enhanced by application of sonic energy or mechanical agitation.
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Technical Support Package For Cleaning With Supercritical CO.sub.2 MFS-29611 NASA Tech Briefs, "Cleaning Metal Substrates Using Liquid/Supercritical Fluid Carbon Dioxide", Keith M. Motyl, pp. 1-31, MSFC-Cover 18 (Mar. 1979).
Karle James A.
Rosio Larry R.
Shore Stephen H.
Smith, Jr. Charles W.
Autoclave Engineers, Inc.
Stinson Frankie L.
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