| 摘要 |
PCT No. PCT/SE84/00120 Sec. 371 Date Nov. 19, 1984 Sec. 102(e) Date Nov. 19, 1984 PCT Filed Apr. 3, 1984 PCT Pub. No. WO84/04113 PCT Pub. Date Oct. 25, 1984.In a refiner (40) with two opposed discs (47,48) rotatable relative to each other fibre pulp is manufactured from lignocellulose-containing material. The material is advanced in a channel comprising a plug pipe (20), through which the material is fed in compressed state, and a steam screen pipe (32) for discharging steam. The steam screen pipe (32) is located directly after the plug pipe (20) and has a cross-sectional area, which slightly exceeds that of the plug pipe in order to allow a limited expansion of the material plug. The steam is thereby allowed to flow through the material, at the same time as the material plug prevents clogging of the apertures (37,39) of the steam screen pipe.
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