Method and apparatus for continuous sterilization and drying...

Details Method and apparatus for continuous sterilization and drying... Method and apparatus for continuous sterilization and drying...

A - Human Necessities

23

B

A23B 7/005 (2006.01) A23B 9/02 (2006.01) A23L 3/04 (2006.01)

Patent

CA 2088523

-37- ABSTRACT OF THE DISCLOSURE Bulk spices and leafy herbs are sterilized for human consumption by feeding the product continuously through an airlock system from a screw feed hopper into a jacketed vessel having a screw conveyor; the temperature and pressure inside the vessel are elevated and maintained at predetermined values by injecting culinary steam, saturated or superheated; the delicate leafy type product is rapidly conveyed through the vessel and is then discharged through a second airlock system into a jacketed cooling vessel in which the product is cooled to approximately the same or slightly above ambient temperature; the cooled product is then conveyed to a dryer; hard shell type products, such as seeds, roots or bark, the heat-treated product is fed directly into the dryer without cooling.

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