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公开(公告)号：US20170173819A1
公开(公告)日：2017-06-22
申请号：US15310342
申请日：2015-05-12
CPC分类号： B27K3/10 , B01J3/006 , B01J3/02 , B27K3/0214 , B27K3/0221 , B27K3/346 , B27K5/0075 , B27K2200/10 , B27K2240/50 , C08H8/00
摘要： Disclosed is a method for the continuous impregnation of wood elements, such as wood chips. The method comprises the subsequent steps of subjecting the wood elements to vacuum, to contact with acetylation fluid, and to impregnation pressure. Preferably, the process is conducted in a plant having conveyors, such as transportation screws, in suitable positions between the zones in which the subsequent process steps are conducted. The impregnation method is used in connection with the acetylation of the wood elements, and preferably is followed by a continuous acetylation process conducted in an acetylation reaction zone downstream of the zone where the impregnation is conducted.
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公开(公告)号：US10307932B2
公开(公告)日：2019-06-04
申请号：US15310342
申请日：2015-05-12
摘要： Disclosed is a method for the continuous impregnation of wood elements, such as wood chips. The method comprises the subsequent steps of subjecting the wood elements to vacuum, to contact with acetylation fluid, and to impregnation pressure. Preferably, the process is conducted in a plant having conveyors, such as transportation screws, in suitable positions between the zones in which the subsequent process steps are conducted. The impregnation method is used in connection with the acetylation of the wood elements, and preferably is followed by a continuous acetylation process conducted in an acetylation reaction zone downstream of the zone where the impregnation is conducted.
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