发明名称 |
Digester for cooking pulp having staggered circular screens for isothermal cooking |
摘要 |
A screen system for a digester for continuous cooking under raised pressure and temperature of fibre material in a vertical vessel, 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 at least one of said screening arrangements (1, 2) has at least one screen element (2A) of which the main configuration is circular and which is assembled by means of welding, and which is fitted into the digester shell by means of welding.
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申请公布号 |
US5567280(A) |
申请公布日期 |
1996.10.22 |
申请号 |
US19950415203 |
申请日期 |
1995.03.31 |
申请人 |
KVAERNER PULPING AKTIEBOLAG |
发明人 |
BACKLUND, AKE;BELLSTROM, KENNETH;OULIE, FINN;SVANBERG, JOHANNA;SODERQVIST, SOREN |
分类号 |
D21C3/24;D21C7/00;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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