发明名称 |
Method and apparatus for optimizing the liquor-to-wood ratio during the production of paper pulp |
摘要 |
Provided is a method and apparatus which decreases a liquor-to-wood ratio at the top of a continuous digester while increasing a liquor-to-wood ratio in the upstream pre-impregnation vessel. A substantially wood-chip free liquor portion is drawn from the top of the digester through a heater to the bottom of the pre-impregnation vessel through a return conduit. A stream is drawn off the return conduit, upstream of the heater, for transfer to the top of the vessel without mixing with wool chips.
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申请公布号 |
US5679217(A) |
申请公布日期 |
1997.10.21 |
申请号 |
US19950384275 |
申请日期 |
1995.02.03 |
申请人 |
KVAERNER PULPING AB |
发明人 |
OUTZEN, PETER;BERG, STAFFAN;ASPVIK, ALF |
分类号 |
D21C1/00;D21C3/24;(IPC1-7):D21C7/00;D21C7/14 |
主分类号 |
D21C1/00 |
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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