APPARATUS FOR TREATMENT OF GRANULAR POLYMERS WITH GAS Russian patent published in 1994 - IPC

FIELD: gas treatment of granular polymers. SUBSTANCE: in the housing a series of tores is positioned, the housing being communicated with gas and granular polymer supply and removal systems. The tores are mounted to reciprocate through contacting of their inner surfaces with a strip. The strip extends through the housing while winding on reversing drive drums. The drums are disposed on both sides of the housing. Reciprocation of tores permits to intensify the treatment process through preventing formation of dead areas. EFFECT: intensified process of gas treatment of granular polymers.