发明名称 |
Digester having screening arrangement for isothermal cooking of fibrous material |
摘要 |
The present invention relates to a digester for continuous cooking under raised pressure and temperature of fibre material in a vertical digester (1), where input of fibre material and cooking liquid takes place at the top of the digester, withdrawal of spent cooking liquor is carried out from at least one digester screening arrangement (1D) between the top and the bottom of the digester, and fibre material is fed out from the bottom (1C) of the digester, wherein the digester (1) is fitted with an additional digester screening arrangement (2) above the lowest screening arrangement (1B) of the digester so that the temperature in all the participatory cooking zones in the digester can be kept at essentially the same temperature level.
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申请公布号 |
US6113742(A) |
申请公布日期 |
2000.09.05 |
申请号 |
US19970897312 |
申请日期 |
1997.07.21 |
申请人 |
KVAERNER PULPING AB |
发明人 |
BACKLUND, AKE;SVANBERG, JOHANNA |
分类号 |
D21C3/24;D21C7/14;(IPC1-7):D21C7/14 |
主分类号 |
D21C3/24 |
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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