发明名称 |
METHOD FO FEEDING FIBROUS MATERIAL INTO A PRESSURIZED VESSEL |
摘要 |
A method of feeding fibrous ligno-cellulose raw material into a pressurized vessel such as a digester operating at approximately 300 pounds per square inch. The raw material is first pre-compacted by a screw conveyor and subsequently compacted to a density of at least 45 pounds per cubic foot of oven dry material to form a plug in a feeding conduit communicating with the digester. During the precompacting and compacting stage, the moisture of the material is maintained at a natural level of about 10% to 50% by weight. The plug thus forms a continuously advancing mass of material which-separates the interior of the digester from the surrounding atmosphere without the need of special valve means normally used in prior art. The advancement of the plug takes place along a straight line generally coincident with the centreline of the screw conveyor but axially spaced from same. |
申请公布号 |
CA1070537(A) |
申请公布日期 |
1980.01.29 |
申请号 |
CA19780295514 |
申请日期 |
1978.01.24 |
申请人 |
STAKE TECHNOLOGY LTD. |
发明人 |
BROWN, DOUGLAS B.;BENDER, ROBERT |
分类号 |
D21C3/00;A23K10/32;B01J3/02;D21C7/06 |
主分类号 |
D21C3/00 |
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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