Drying and gas or vapor contact with solids – Process – Diverse types of drying operations
Patent
1999-03-19
2000-08-22
Wilson, Pamela A.
Drying and gas or vapor contact with solids
Process
Diverse types of drying operations
34487, 34516, 34179, 34182, 110229, 110342, 422190, 422228, 422229, 201 33, 201 35, 202118, F26B 504
Patent
active
061052752
ABSTRACT:
The present invention relates to a method and apparatus for use in continuously loading material to be treated into a rotary vacuum retort and continuously unloading one or more vapors or similar volatile substances and treated material out of the rotary vacuum retort during high temperature and high vacuum processing. The loading and unloading are performed in a manner that minimizes the introduction of low boiling point gases. The apparatus employs, in one preferred embodiment, elastomeric pinch valve airlocks to isolate the entire system between the airlocks and a vacuum generator. Furthermore, the material being treated may be dried in a dryer prior to introduction into the retort. Moreover, the processed material can be cooled through a heat exchanger to permit the use of a low temperature pinch valve airlock on the discharge end of the process.
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Aulbaugh Randy A.
Hawk Gregory G.
SepreDyne Corporation
Wilson Pamela A.
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