Accession Number : ADD012548

Title :   Method of Washing Solids with Liquified Gases.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE ARMY WASHINGTON DC

Personal Author(s) : Binder,Michael ; Walker,Charles W , Jr ; Mammone,Robert J ; Wade,William L , Jr ; Gilman,Sol

Report Date : 29 Sep 1986

Pagination or Media Count : 10

Abstract : The general object of this invention is to provide a method of washing solids with liquified gases without contamination from outside air or moisture. A further object is to provide such a method wherein the washing solvent is a moisture sensitive liquid having relatively high vapor pressures at room temperature. A particular object of the invention is to provide such a method where the washing solvent is liquidified sulfur dioxide. It has now been found that the aforementioned objects can be attained by a method including the steps of: (1) placing the solid to be washed in a dry vessel under an inert atmosphere, (2) evacuating the vessel, (3) introducing the liquified gas solvent into the vessel, (4) washing the solid with the liquified gas solvent, and (5) removing the solvent by the application of vacuum. Keywords: Patent Applications.

Descriptors :   *PATENT APPLICATIONS, *SULFUR OXIDES, *LIQUEFIED GASES, *SOLVENTS, *CLEANING COMPOUNDS, CONTAMINATION, ATMOSPHERES, RARE GASES, LIQUIDS, MOISTURE, SENSITIVITY, SOLIDS, VACUUM, HIGH PRESSURE, VAPOR PRESSURE, INVENTIONS, ROOM TEMPERATURE, DIOXIDES

Subject Categories : Solvents, Cleaners, and Abrasives

Distribution Statement : APPROVED FOR PUBLIC RELEASE