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    • 15. 发明授权
    • Process for expanding tobacco
    • 扩大烟草的工艺
    • US3982550A
    • 1976-09-28
    • US583888
    • 1975-06-05
    • Roger Z. de la BurdePatrick E. AumentRay F. DawsonRonald A. Tamol
    • Roger Z. de la BurdePatrick E. AumentRay F. DawsonRonald A. Tamol
    • A24B3/18
    • A24B3/185A24B3/18
    • This disclosure relates to a process for expanding tobacco which comprises the steps of (1) subjecting tobacco, preferably in cut or particulate form, to a vacuum, (2) contacting the tobacco, while under vacuum, with water, preferably as a mist or spray, to impregnate the tobacco with water, (3) freezing the water-impregnated tobacco while it is maintained under vacuum, and (4) rapidly heating the frozen water-impregnated tobacco, preferably by direct contact with superheated steam. The first three steps may be, and preferably are, conducted in the same chamber. The fourth step may be conducted in a heating or drying chamber or tower, in a cyclone dryer or in similar equipment which will provide good gas-particle contact.
    • 本公开涉及一种用于扩大烟草的方法,其包括以下步骤:(1)将烟草,优选以切割或微粒形式进行真空,(2)在真空下与烟气接触,优选以雾或 喷雾,用水浸渍烟草,(3)在真空下保持浸渍的烟草,并且(4)快速加热冷冻的含水烟草,优选通过与过热蒸汽直接接触。 前三个步骤可以并且优选地在相同的室中进行。 第四步骤可以在加热或干燥室或塔,旋风干燥器或将提供良好气体 - 颗粒接触的类似设备中进行。