发明名称 |
Förfarande i samband med förbehandling av finfördelat fibermaterial |
摘要 |
Wood chips(1) are steamed at atmospheric pressure in a gas phase part of the low-pressure system followed by a liquid phase in chip chute(3). A high-pressure feeder(4) takes the pre-treated wood chips for feeding to a digester vessel(19). Low-pressure liquid(5) is pumped(6) through a sand trap(7) and in-line strainer(8) back into the chip chute(3). A level tank(9) controls liquid levels in the chute(3). Hot process liquids(11,12) from the high pressure cooking system are flashed in the level tank(9) to provide heating steam for the low-pressure system. The cooled liquid is used as make-up for the circulation liquid in the low-pressure system. |
申请公布号 |
SE9904711(D0) |
申请公布日期 |
1999.12.22 |
申请号 |
SE19990004711 |
申请日期 |
1999.12.22 |
申请人 |
KVAERNER PULPING AB |
发明人 |
LENNART *GUSTAVSSON;VIDAR *SNEKKENES |
分类号 |
D21C;D21C3/24;D21C7/06;(IPC1-7):D21C/ |
主分类号 |
D21C |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|