Patent ID: 6105275
Filing Date: 2000-08-22
Classification: B09B,B09C,F26B

Abstract:
A method of continuously separating at least one volatile substance from a material being treated disposed within a rotary retort having an entrance and an exit a pair of rotating to or from non-rotating junctions, the method comprising the steps of:moving the material being treated from a first airlock in communication with the entrance wherein the first airlock is maintained at pressure approximating that within the rotary retort;applying a vacuum of between about 2.25 mm Hg and 735 mm Hg to the material being treated in the rotary retort;applying heat to the material being treated to render the internal temperature within the rotary retort greater than ambient temperature and sufficient to volatize at least one substance;removing each volatized substance through a transfer pipe from the rotary retort;moving the treated material through a second airlock in communication with the exit wherein the second airlock is maintained at a pressure approximating that within the rotary retort.