发明名称 |
Method of reducing the resin content in sulfite pulp |
摘要 |
Provided is a method for reducing resin content in sulfite pulp, in an ozone bleaching process where the sulfite pulp is bleached using ozone, at a pulp concentration of about 6 to about 14% by weight, and at a pH of less than about 7. The process includes the steps of alkalizing the sulfite pulp to a pH of greater than about 7 after ozone bleaching and then mechanically processing the sulfite pulp to press resin out of the sulfite pulp.
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申请公布号 |
US5605604(A) |
申请公布日期 |
1997.02.25 |
申请号 |
US19950389693 |
申请日期 |
1995.02.14 |
申请人 |
KVAERNER PULPING AKTIEBOLAG |
发明人 |
DILLNER, BJORN;ARNE, HANS;TIDSTAM, GORAN |
分类号 |
D21C9/08;D21C9/153;(IPC1-7):D21C9/153 |
主分类号 |
D21C9/08 |
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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