公开(公告)号：US3881986A

公开(公告)日：1975-05-06

申请号：US15001771

申请日：1971-06-04

Applicant: SVENSKA CELLULOSA AB

Inventor： BACKLUND STURE OLOF ERIK

IPC: D21C1/10 ,  D21C1/02

CPC classification number: D21C1/10

Abstract: AN improved method is disclosed for impregnating lignocellulosic fibrous material in the cooking of pulp from wood chips in a digester partially filled with cooking liquor which is circulated through the digester for the purpose of obtaining a homogeneous delignification of the entire charge of chips within the digester, the improvement comprising conveying cooking liquor to the top of the digester, distributing the liquor substantially uniformly over substantially the entire cross-sectional area of the digester by means of at least one centrifugal pressure nozzle and subjecting the charge to pressure-impregnation by means of steam, the pressure being applied during the period in which the mixture is brought to cooking temperature but after the chips present at the top of the digester have been brought into contact with the cooking liquor, the circulation of the cooking liquor being stopped during the pressure-impregnation phase.

Abstract translation: 公开了一种改进的方法，用于在部分填充有烹饪液体的蒸煮器中从木屑烹饪纸浆中浸渍木质纤维素纤维材料，该蒸煮器通过蒸煮器循环，目的是获得在蒸煮器内的整个片剂的均匀脱木素， 该改进包括将蒸煮液输送到蒸煮器的顶部，通过至少一个离心压力喷嘴将蒸馏液基本上均匀地分布在蒸煮器的整个横截面积的基本上均匀的位置，并通过蒸汽进行压力浸渍 ，在混合物进入烹饪温度的期间施加的压力，但是在存在于蒸煮器顶部的切屑与烹饪液接触之后，在压力调节期间停止蒸煮液的循环， 浸渍阶段