发明名称 |
SAETT ATT BEHANDLA CELLULOSAHALTIGT MATERIAL |
摘要 |
The invention relates to a process for bleaching cellulose-containing material, in detail for bleaching in a multi-stage sequence, in which the first bleaching stage is carried out in two phases, that is to say a first phase with elemental chlorine and a second phase with chlorine dioxide water. One subject of the invention is a reduction in the chlorination of the organic material. According to the invention, this is achieved by limiting the proportion of chlorine fed in the first phase in such a way that the end pH in the liquid of the chlorine phase exceeds 3.0. |
申请公布号 |
FI823625(L) |
申请公布日期 |
1983.04.28 |
申请号 |
FI19820003625 |
申请日期 |
1982.10.25 |
申请人 |
SUNDS DEFIBRATOR AKTIEBOLAG |
发明人 |
ANNERGREN, GOERAN ERIK;LINDBLAD, PER-OLOV;LINDSTROEM, LARS-AOKE TORBJOERN |
分类号 |
D21C9/14 |
主分类号 |
D21C9/14 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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