Use of azeotropic compositions in vapor degreasing

Details Use of azeotropic compositions in vapor degreasing Use of azeotropic compositions in vapor degreasing

B - Operations, Transporting

08

B

B08B 3/00 (2006.01) C11D 7/50 (2006.01) C23G 5/028 (2006.01)

Patent

CA 2063144

ABSTRACT OF THE DISCLOSURE A vapor cleaning process for cleaning soil from solid articles comprising the use of an azeotropic vapor mixture of perchloroethylene and water as the cleaning agent which condenses on the articles and thus cleans them. Liquid perchloroethylene and water are placed in a lower portion of a degreasing chamber, the articles to be cleaned are introduced into an upper portion of the chamber, the perchloroethylene and water are heated and evaporated to form a minimum-boiling azeotropic vapor mixture, the vapor mixture is condensed on the articles whereby soil is removed from them, and the cleaned articles are then removed from the chamber.

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