发明名称 |
Solvent recovery in pulp bleaching with ozone |
摘要 |
A process for bleaching pulp by impregnating the pulp with an aqueous organic solvent medium and then bleaching in an ozone stage (Z stage) to form a bleached pulp characterized in that organic solvent in the organic solvent medium accompanying the pulp through the ozone stage is neutralized and stripped from the bleached pulp leaving the ozone stage and the separated organic solvent is recovered for reuse.
|
申请公布号 |
US5507913(A) |
申请公布日期 |
1996.04.16 |
申请号 |
US19940352762 |
申请日期 |
1994.12.05 |
申请人 |
MACMILLAN BLOEDEL LIMITED |
发明人 |
MURPHY, THOMAS H.;NORRIS, ROBERT G. |
分类号 |
D21C9/153;(IPC1-7):D21C9/153 |
主分类号 |
D21C9/153 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|