VACUUM APPARATUS FOR REPROCESSING OF BULK MATERIALS Russian patent published in 1995 - IPC

FIELD: reprocessing of bulk materials. SUBSTANCE: vacuum apparatus has cylindrical housing 1, cylindrical vaporizer chamber 4 with equally spaced vaporizers 9. Each vaporizer has perforated tube 10 with conical shells 12 in its lower part, vapor pipe 14, condenser 27, charging tube 22, sublimation residue collection hopper 3 and condensate collection hopper 26, feeding hopper 2 with metering auger 24. Vaporizer chamber 4 is divided by horizontal wall 6 into two sections. Tube 22 is connected to lower section 8. Each vaporizer 9 in upper section 7 is provided with branch pipe 13 positioned coaxially outside perforated tube 10. Branch pipe 13 have semi-cylindrical portions faced towards side opposite to vapor pipe 14 and provided with perforations 15. EFFECT: increased efficiency, simplified construction and enhanced reliability in operation. 2 dwg