METHOD AND APPARATUS FOR CLEANING OBJECTS WITH SOLVENT Russian patent published in 1997 - IPC

FIELD: chemical cleaning. SUBSTANCE: method consists in placing objects into container, sealing the latter, introducing solvent from solvent- storage tank, cleaning objects, removing solvent from cleaning container, evacuating the container and drying objects to remove remains of solvent. Then follow removal of solvent vapor and subsequent condensation thereof, removal of objects from cleaning container, regeneration of solvent by way of heating and evaporating it, removal of solvent vapor and subsequent condensation thereof followed by returning regenerated solvent into cleaning process. Heat supply both in drying and in solvent regeneration stages is effected by direct heat exchange through cleaning container wall by way of condensation of solvent vapor on outer container wall under pressure higher than that under which solvent vaporizes in cleaning container. EFFECT: improved heat condition of process. 3 cl, 1 dwg