Processo de e aparelho para expansão de tabaco
A method of and an apparatus for expanding tobacco, particularly tobacco impregnated with solid carbon dioxide are disclosed. The apparatus comprises an arcuate, generally C-shaped duct (16) for conveying the tobacco material in a hot gaseous medium to sublimate the solid carbon dioxide and expand t...
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Main Authors | , , , , , , |
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Format | Patent |
Language | Portuguese |
Published |
22.12.1998
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Edition | 6 |
Subjects | |
Online Access | Get full text |
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Summary: | A method of and an apparatus for expanding tobacco, particularly tobacco impregnated with solid carbon dioxide are disclosed. The apparatus comprises an arcuate, generally C-shaped duct (16) for conveying the tobacco material in a hot gaseous medium to sublimate the solid carbon dioxide and expand the tobacco. The duct has a non-circular cross-section, preferably a rectangular cross-section, with a high width-to-depth ratio and an increasing depth from the inlet (34) to an intermediate portion (76) of the duct then a decreasing depth from the intermediate portion to the outlet (35) of the duct. A winnower device (48) infeeds the tobacco material into the duct adjacent the throat (26) of a venturi section (12) connected to the inlet of the conveying duct. A tangential separator (18) with an adjustable baffle (80) at the inlet thereof for controlling velocity in the separator is used to separate the expanded tobacco from the gaseous medium. |
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Bibliography: | Application Number: BR19979704292 |