Accession Number:

ADD012548

Title:

Method of Washing Solids with Liquified Gases.

Descriptive Note:

Patent Application,

Corporate Author:

DEPARTMENT OF THE ARMY WASHINGTON DC

Report Date:

1986-09-29

Pagination or Media Count:

10.0

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.

Subject Categories:

  • Solvents, Cleaners and Abrasives

Distribution Statement:

APPROVED FOR PUBLIC RELEASE