Expansion of tobacco

Details Expansion of tobacco Expansion of tobacco

A - Human Necessities

24

B

131/87

A24B 3/18 (2006.01) B01J 8/24 (2006.01)

Patent

CA 1258807

-17- "Improvements Relating to the Expansion of Vegetable Material" A B S T R A C T In a method of expanding tobacco the tobacco is contacted in a first vessel with an expansion agent and, with the vessel being closed and liquid phase expansion agent in the tobacco being at a temperature above the boiling point at a lower, release pressure, the first vessel is connected to a closed second vessel the interior of which is at the release pressure. When the tobacco is contacted in the first vessel with the expansion agent, the tobacco is maintained in a mobilised, particle separated condition by supplying gaseous mobilising medium to a mobilising zone of the first vessel via nozzles located at upwardly diverging walls bounding the zone and preferably supplying in addition gaseous accelerating medium to the zone in an upward direction from a lower region of the zone.

520368

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