Process for recovery of caffeine from activated carbon

Details Process for recovery of caffeine from activated carbon Process for recovery of caffeine from activated carbon

1993-07-15

1994-12-06

Rizzo, Nicholas

Organic compounds -- part of the class 532-570 series

Organic compounds

Chalcogen bonded directly to ring carbon of the purine ring...

544274, C07D47312

Patent

active

053712218

ABSTRACT:
The invention relates to a process for recovering caffeine from caffeine-loaded activated carbon using a circulated inert gas sweeping stream held at a temperature of 250.degree. to 460.degree. C., in which process the activated carbon is preheated prior to the desorption of the caffeine with heat sources other than the sweeping gas and held during the desorption step at a uniform temperature or at a temperature increasing from the inlet to the outlet of the inert gas sweeping stream within the range of 250.degree. to 460.degree. C. and the caffeine is subsequently separated from the inert gas sweeping stream by conventional means.

REFERENCES:
patent: 4673743 (1987-06-01), Wilkens

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