公开(公告)号：US4155805A

公开(公告)日：1979-05-22

申请号：US871111

申请日：1978-01-19

申请人： Herbert Sundqvist

发明人： Herbert Sundqvist

IPC分类号： D21C7/06 ,  D21C7/10

CPC分类号： D21C7/06

摘要： A method for continuously digesting cellulosic fiber material so that the digested pulp has a very low quantity of reject material (i.e. one to two percent) compared to the prior art. Fiber material is continuously fed into a standing vessel downwardly through the vessel steam phase to establish a fiber level, digesting liquid being added to the vessel to maintain a liquid level therein, and the digested pulp being withdrawn from the bottom of the vessel. Spreading of the downwardly flowing fiber material in the steam phase substantially evenly over the vessel cross-section is effected and the downwardly flowing fiber material is heated by introducing a major portion of the steam to be introduced into the steam phase at a first vertical position about 0.0 to 100 cm. above the higher of the fiber and liquid levels in the vessel.Some of the steam may be added at a second vertical level, or at a third vertical level.

摘要翻译： 一种用于连续消化纤维素纤维材料的方法，使得消化的纸浆与现有技术相比具有非常少量的废料（即一至百分之二）。 将纤维材料连续地供入到容器中，向下通过容器蒸汽相，以建立纤维水平，加入到容器中的消化液体以保持其中的液体水平，并且将消化的纸浆从容器的底部取出。 实现在蒸汽相中基本上均匀地在容器横截面上向下流动的纤维材料的扩散，并且向下流动的纤维材料通过在第一垂直位置处引入待引入蒸汽相的大部分蒸汽相加热 0.0至100厘米。 高于容器中纤维和液体水平的较高者。