| 摘要 |
<p>A standing cylindrical vessel for treating cellulosic pulp continuously fed therethrough, is provided with concentric strainer bodies having cylindrical faces and with rotary spray tubes having outlets for spreading a liquid in the pulp in circular paths between the strainer bodies. Liquid ejected through said outlets moves transversely of the pulp flow towards the strainer faces where liquid is withdrawn from the pulp. An impervious cylindrical wall or screen is located close to a liquid outlet moving between two strainer bodies and obstructs the flow therefrom in such a manner that the liquid flows merely or mainly towards one of said strainer bodies.</p> |
