发明名称 |
PROCESS FOR BLEACHING LIGNOCELLULOSE PULP |
摘要 |
Lignocellulose pulp is bleached by bleaching a pulp in aqueous alkali solution with oxygen and treating the pulp with an enzyme, while a liquid fraction delivered from the enzyme treatment step is subjected to a penetration treatment through a separation membrane, for example, reverse osmosis membrane, to separate a permeated fraction from a non-permeated fraction; the permeated fraction is fed to the alkali-oxygen bleaching (oxygen delignification) step and is used as a liquid medium of the bleaching system; and non-permeated fraction is subjected to a xylooligosaccharide-collecting procedure.
|
申请公布号 |
CA2301371(C) |
申请公布日期 |
2009.09.01 |
申请号 |
CA20002301371 |
申请日期 |
2000.03.20 |
申请人 |
OJI PAPER CO., LTD. |
发明人 |
IZUMI, YOSHIYA;KAGAWA, HITOSHI;SUGIURA, JUN;AZUMI, NAOYA |
分类号 |
D21C9/147;C12S3/08;D21C5/00;D21C11/00 |
主分类号 |
D21C9/147 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|