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    • 1. 发明申请
    • Method For Dehydrating Hydrous Low-Substituted Hydroxypropyl Cellulose and Method for Producing Low-Substituted Hydroxypropyl Cellulose By Using Same
    • 脱水低取代羟丙基纤维素的方法及使用相同方法生产低取代羟丙基纤维素
    • US20150045550A1
    • 2015-02-12
    • US14454964
    • 2014-08-08
    • Shin-Etsu Chemical Co., Ltd.
    • Junichi MatsubaraAtsuhiko YonemochiMitsuo Narita
    • C08B11/20
    • C08B11/20C08B11/08
    • Reduction of the energy burden in a step of drying hydrous low-substituted hydroxypropyl cellulose (L-HPC), reduction of water content of a cake obtained by dehydration, and others are targeted. More specifically, provided is a method for dehydrating hydrous L-HPC with a compression type dehydrator by feeding the hydrous L-HPC to a screw conveyer connected to the inlet of the dehydrator, including steps of: starting the operation of the conveyer to fill the conveyer and the dehydrator with the hydrous L-HPC, starting the operation of the filled dehydrator, and feeding the hydrous L-HPC to the conveyer, while discharging dehydrated L-HPC from an outlet of the dehydrator, wherein a feed rate of feeding the hydrous L-HPC to the conveyer is equal to a discharge rate of discharging the dehydrated L-HPC in terms of net weight of cellulose ether, and a method for producing L-HPC by using the above method.
    • 干燥含水低取代羟丙基纤维素(L-HPC)的步骤中的能量负荷的降低,脱水得到的滤饼的水分含量的降低等。 更具体地,提供了一种通过将水合L-HPC进料到连接到脱水机的入口的螺旋输送机上的压缩型脱水机来脱水含水L-HPC的方法,包括以下步骤:开始输送机的操作以填充 输送机和脱水器与水合L-HPC开始,开始填充脱水器的操作,并且将水合L-HPC输送到输送机,同时从脱水器的出口排放脱水的L-HPC,其中进料速率 对于输送机的含水L-HPC等于脱水的L-HPC以纤维素醚的净重排出的排出量,以及使用上述方法生产L-HPC的方法。