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    Tobacco expansion processes and apparatus
    3.
    发明公开
    Tobacco expansion processes and apparatus 失效
    Verfahren und Vorrichtung zur Expansion des Tabaks

    公开(公告)号：EP0878138A1

    公开(公告)日：1998-11-18

    申请号：EP97107755.7

    申请日：1997-05-13

    申请人： R.J. REYNOLDS TOBACCO COMPANY

    发明人： Conrad, Lucas Jones ,  Beard, Hoyt Sturdivant ,  Stump, Franklin Allan, Jr.

    IPC分类号： A24B3/18

    CPC分类号： A24B3/182

    摘要： An apparatus for impregnating tobacco with an expansion agent includes a chamber for confining a charge of tobacco under elevated pressure conditions. An accumulator connected to the chamber maintains a supply of an expansion agent in fluid form under conditions of elevated temperature and pressure but less than the desired tobacco impregnation temperature and pressure. The expansion agent is forcibly and rapidly moved from the accumulator and introduced into the chamber under conditions such that the pressure and temperature of the expansion agent are increased to the desired impregnation temperature and pressure, preferably including a pressure approaching or above the supercritical pressure thereof.

    摘要翻译： 用膨胀剂浸渍烟草的设备包括用于在升高的压力条件下限制烟草进料的室。 连接到室的蓄能器在升高的温度和压力但小于期望的烟草浸渍温度和压力的条件下维持流体形式的膨胀剂的供应。 在膨胀剂的压力和温度升高到期望的浸渍温度和压力，优选包括接近或超过其超临界压力的压力的条件下，膨胀剂被强制地快速地从蓄能器移出并引入室中。

    Method of and apparatus for expanding tobacco
    4.
    发明公开
    Method of and apparatus for expanding tobacco 失效
    Verfahren und Vorrichtung zum Expandieren von Tabak

    公开(公告)号：EP0823220A1

    公开(公告)日：1998-02-11

    申请号：EP97113544.7

    申请日：1997-08-06

    申请人： R.J. REYNOLDS TOBACCO COMPANY

    发明人： Poindexter, Dale Bowman ,  Barnes, Russell Dean ,  Beard, Hoyt Sturdivant ,  Guy, Keith Rowan ,  Laurence, Ricky Harris ,  Richardson, Harold Eugene ,  Stewart, Tony Dean ,  Wilhelm, Douglas Edwin

    IPC分类号： A24B3/18

    CPC分类号： A24B3/182

    摘要： 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.

    摘要翻译： 公开了用于膨胀烟草，特别是用固体二氧化碳浸渍的烟草的方法和装置。 该装置包括用于在热气体介质中输送烟草材料以使固体二氧化碳升华并使烟草膨胀的弓形通常为C形的管道（16）。 管道具有非圆形横截面，优选矩形横截面，具有高的宽度与深度的比例，并且从入口（34）到管道的中间部分（76）的深度增加，然后减小 从管道的中间部分到出口（35）的深度。 一个绞车装置（48）将烟草材料进入与连接到输送管道的入口的文氏管部分（12）的喉部（26）相邻的管道中。 在其入口处具有用于控制分离器中的速度的可调节挡板（80）的切向分离器（18）用于将膨胀的烟草与气体介质分离。

    Process and apparatus for tobacco batch preparation and expansion
    5.
    发明公开
    Process and apparatus for tobacco batch preparation and expansion 失效
    Verfahren und Vorrichtung zur Vorbereitung und Expansion vonTabakschüben

    公开(公告)号：EP0754411A2

    公开(公告)日：1997-01-22

    申请号：EP96110869.3

    申请日：1996-07-05

    申请人： R.J. REYNOLDS TOBACCO COMPANY

    发明人： Beard, Hoyt Sturdivant ,  Fox, Denise ,  Johnson, Robert Calvin ,  Lovette, James Edward ,  Stump, Franklin Allan, Jr.

    IPC分类号： A24B3/18

    CPC分类号： A24B3/182

    摘要： A tobacco expansion process and apparatus is provided to form a tobacco batch having a predetermined amount of tobacco, contact the batch with steam, load the batch onto a spool assembly, and impregnate the batch with an expansion agent. A double conduit apparatus is provided to load two simultaneously formed tobacco batches onto opposing sides of the impregnation spool. The tobacco batch is formed within a batch forming chamber comprising a vertically adjustable screen to accommodate different operating parameters and/or different tobacco types and/or forms. The batch is directed through a pneumatically separable zone to a precompaction and heating zone. The separable zone is defined by sequentially operating members, at least two of which form barriers to impede seepage of the expansion agent from the impregnating zone. In the precompaction zone the batch is precompacted against a permeable barrier, steamed, and then loaded onto a spool assembly for impregnation with an expansion agent.

    摘要翻译： 提供烟草膨胀过程和装置以形成具有预定量的烟草的烟草批料，用蒸汽接触批料，将批料装载到卷轴组件上，并用膨胀剂浸渍批料。 提供双管道装置以将两个同时形成的烟草批次装载到浸渍卷轴的相对侧上。 烟草批次形成在分批形成室内，包括可垂直调节的筛网以适应不同的操作参数和/或不同的烟草类型和/或形式。 批料通过可气动分离的区域引导到预压实和加热区。 可分离区域由顺序操作的构件限定，其中至少两个形成屏障以阻止膨胀剂从浸渍区渗出。 在预压实区域中，将批料预先压制在可渗透屏障上，蒸发，然后装载到卷轴组件上以用膨胀剂浸渍。