| 发明名称 |
METHODS FOR APPLYING OZONE IN ECF BLEACHING |
| 摘要 |
A ECF bleaching method for bleaching lignocellulosic materials comprising a bleaching sequence of at least three sequential stages, said stages including an oxidative treatment stage, an alkaline extraction stage, and an acidification bleaching treatment stage using ozone.
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| 申请公布号 |
CA2245535(A1) |
申请公布日期 |
1999.02.25 |
| 申请号 |
CA19982245535 |
申请日期 |
1998.08.24 |
| 申请人 |
PRAXAIR TECHNOLOGY, INC. |
发明人 |
COLODETTE, JORGE LUIZ;RODRIGUES DA SILVA, MARCELO;CAMPOS H. DE BRITO, ANA;SALVADOR, ELIAS |
| 分类号 |
D21C9/10;D21C9/153;(IPC1-7):D21C9/153;D21C9/14 |
主分类号 |
D21C9/10 |
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