| 摘要 |
A method and an apparatus for treating pulp with a treatment agent for simultaneous displacement and thickening, in which the pulp is fed into a space (6) in order to form a layer on the perforated casing (5) of a rotating drum (3). According to the invention, the treatment agent is also fed into the space (6) in order to form a continuous layer (22) of treatment agent up against the mobile pulp layer (20). The displacement and thickening are carried out continuously at a mechanical pressure on the pulp layer (20) which is less than 100 kPa, and for the most part using the treatment agent. The quantity of liquid which is displaced through the casing (5) per unit of time exceeds the quantity of treatment agent which is supplied. A distribution channel for the treatment agent is designed and arranged in association with the space (6) in such a way that the layer of treatment agent is formed and maintained in free contact with the pulp layer. |
