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):
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.
Descriptors:
Subject Categories:
- Solvents, Cleaners and Abrasives