公开(公告)号：US20190301094A1

公开(公告)日：2019-10-03

申请号：US16464259

申请日：2017-11-23

申请人： FIBRIA CELULOSE S.A.

发明人： Heloisa Ogushi Romeiro RAMIRES ,  Braz José DEMUNER

IPC分类号： D21C3/26 ,  D21C5/00 ,  D21C9/00 ,  D21C9/10 ,  D21H11/02 ,  D21H11/18

摘要： The present invention refers to the separation of cellulose pulp into distinct fractions with different draining and morphological characteristics, as well as the use of part of these fractions for the production of nanocellulose. The process in reference combines the unitary operations of fiber separation, thickening to a certain consistency, draining and drying of the cellulosic pulp with the high drainage ability and production of nanocellulose from high primary fines content pulp. The process may consider any cellulosic pulp fiber derived from short or long fiber woods such as Eucalyptus, Corymbia, Birch, Aspen, Pinus, recycled fibers, etc., their residues such as bark, sawdust, etc.