| 摘要 |
The present invention relates to a method and a device for continuously producing pulp in which finely divided fibre material, preferably wood chips, is impregnated in a first vessel (1), preferably by being fed in at the top (2) and fed out from the bottom (3) of the said vessel (1), in which cooking pressure essentially prevails in the said first vessel (1) and the chips are heated and impregnated with the aid of displacement by black liquor in countercurrent and drawing off from the said first vessel (1) is effected from at least one draw-off screen (4), in which the chips which have been thoroughly impregnated with boiling hot black liquor are transferred to the top (5) of a steam-phase digester (6) from which pulp is fed out at the bottom (10) and which possesses at least one screen girdle (8) for drawing off spent liquor, with at least 50% of the quantity of liquor required for the cooking reaction, and allocated for this purpose, being supplied separately to the steam space (7) of the digester (6), preferably in the form of finely divided drops. Whereby the balance (27) of cooking liquor preferably is added to a lower countercurrent digesting zone (14).
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