Apparatus for expanding comminuted tobacco material

Details Apparatus for expanding comminuted tobacco material Apparatus for expanding comminuted tobacco material

A - Human Necessities

24

B

131/87

A24B 3/18 (2006.01)

Patent

CA 1300461

ABSTRACT OF THE DISCLOSURE An apparatus for expanding comminuted tobacco material comprises a metering and supply means for supplying the tobacco material to an expansion chamber, a nozzle opening in a wall of the expansion chamber for the introduction of a hot gas consisting of air and steam for accelerating the tobacco material under pressure drop to at least 50 m/s with a residence time of the tobacco material in the expansion chamber of less than about 1/10 s and a delay tube following the expansion chamber. The expansion chamber is integrated into the metering and supply means. In an end wall of the expansion chamber at least one nozzle opening is located in the vicinity of the bottom so that an adjustable steam/air mixture pushes the tobacco material substantially at a right-angle out of the expansion chamber. The expansion chamber is connected to an acceleration tube with converging cross-section which is followed by the delay tube.

562023

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