发明名称 |
Near neutral chlorine dioxide bleaching of pulp |
摘要 |
Final chlorine dioxide bleaching of lignocellulosic materials is most effective at a near-neutral pH but present industrial practice typically targets a final pH of between 3.5 and 4.0 because of the difficulty in achieving and maintaining near-neutral pH cost effectively. The in situ formation of bicarbonate before the addition of chlorine dioxide provides a way of maintaining the required near-neutral pH. Near-neutral final chlorine dioxide bleaching also produces a bleached pulp that is in a state that responds more effectively to fluorescent whitening or optical brightening agents.
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申请公布号 |
US8470132(B2) |
申请公布日期 |
2013.06.25 |
申请号 |
US20070224794 |
申请日期 |
2007.02.12 |
申请人 |
JIANG ZHI-HUA;BERRY RICHARD MCKINNON;FPINNOVATIONS |
发明人 |
JIANG ZHI-HUA;BERRY RICHARD MCKINNON |
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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