PROCESS AND APPARATUS FOR MODIFICATION OF LIGNOCELLULOSIC MATERIALS AND PRODUCTS OF MODIFIED LIGNOCELLULOSIC MATERIALS OBTAINED BY THE PROCESS
    3.
    发明申请
    PROCESS AND APPARATUS FOR MODIFICATION OF LIGNOCELLULOSIC MATERIALS AND PRODUCTS OF MODIFIED LIGNOCELLULOSIC MATERIALS OBTAINED BY THE PROCESS 有权
    改性过程中获得的变质纤维素材料的纤维素材料和产品的改性工艺及装置

    公开(公告)号:US20130277000A1

    公开(公告)日:2013-10-24

    申请号:US13978771

    申请日:2011-01-10

    IPC分类号: D21C1/04

    CPC分类号: D21C1/04 B27N1/029 C08H8/00

    摘要: A process and apparatus for the preparation of a modified lignocellulosic material by treating the lignocellulosic material in a first activator zone having an atmosphere of one or more acid anhydrides in vapour form in a gas at a gauge pressure of 0-50 kPag and a temperature of 100-160° C., and then treating the lignocellulosic material in a second reactor zone having an atmosphere of a gas at a gauge pressure of 0-50 kPag and a temperature of 120-190° C., thereafter stripping the lignocellulosic material with steam or water in a stripper zone, and optionally further processing. The process is more efficient as compared with the prior art processes by providing a better access of the acid anhydrides to the sites of the reactive lignocellulosic hydroxyl groups (—OH), which are located on the internal surfaces of pores and capillary channels in the lignocellulose. Furthermore, the apparatus is relatively simple. This makes the inventive process and apparatus suitable for a cost-efficient preparation of modified lignocellulosic fibre in industrial scale.

    摘要翻译: 一种用于制备改性木质素纤维素材料的方法和装置,该方法和装置是在表压为0-50kPag的气体中以蒸气形式处理具有一种或多种酸酐气氛的第一活化剂区域中的木质纤维素材料, 100-160℃,然后在表压为0-50kPag,温度为120-190℃的气体气氛的第二反应器区域中处理木质纤维素材料,然后用木质纤维素材料 蒸汽或水在汽提区,以及可选的进一步处理。 与现有技术方法相比,通过提供酸酐更好地进入反应性木质纤维素羟基(-OH)的位置,其位于木质纤维素的孔和毛细管通道的内表面上,该方法更有效 。 此外,该装置相对简单。 这使得本发明的方法和装置适合于在工业规模上经济地制备改性木质纤维素纤维。

    Process and apparatus for modification of lignocellulosic materials and products of modified lignocellulosic materials obtained by the process
    4.
    发明授权
    Process and apparatus for modification of lignocellulosic materials and products of modified lignocellulosic materials obtained by the process 有权
    用于改性木质纤维素材料的方法和装置以及通过该方法获得的改性木质纤维素材料的产品

    公开(公告)号:US09091022B2

    公开(公告)日:2015-07-28

    申请号:US13978771

    申请日:2011-01-10

    IPC分类号: D21C1/04 C08H8/00

    CPC分类号: D21C1/04 B27N1/029 C08H8/00

    摘要: A process and apparatus for the preparation of a modified lignocellulosic material by treating the lignocellulosic material in a first activator zone having an atmosphere of one or more acid anhydrides in vapour form in a gas at a gauge pressure of 0-50 kPag and a temperature of 100-160° C., and then treating the lignocellulosic material in a second reactor zone having an atmosphere of a gas at a gauge pressure of 0-50 kPag and a temperature of 120-190° C., thereafter stripping the lignocellulosic material with steam or water in a stripper zone, and optionally further processing. The process is more efficient as compared with the prior art processes by providing a better access of the acid anhydrides to the sites of the reactive lignocellulosic hydroxyl groups (—OH), which are located on the internal surfaces of pores and capillary channels in the lignocellulose. Furthermore, the apparatus is relatively simple. This makes the inventive process and apparatus suitable for a cost-efficient preparation of modified lignocellulosic fibre in industrial scale.

    摘要翻译: 一种用于制备改性木质素纤维素材料的方法和装置,该方法和装置是在表压为0-50kPag的气体中以蒸气形式处理具有一种或多种酸酐气氛的第一活化剂区域中的木质纤维素材料, 100-160℃,然后在表压为0-50kPag,温度为120-190℃的气体气氛的第二反应器区域中处理木质纤维素材料,然后用木质纤维素材料 蒸汽或水在汽提区,以及可选的进一步处理。 与现有技术方法相比,通过提供酸酐更好地进入反应性木质纤维素羟基(-OH)的位置,其位于木质纤维素的孔和毛细管通道的内表面上,该方法更有效 。 此外,该装置相对简单。 这使得本发明的方法和装置适合于在工业规模上经济地制备改性木质纤维素纤维。