公开(公告)号：US4756799A

公开(公告)日：1988-07-12

申请号：US839022

申请日：1986-03-12

Applicant: Goran Bengtsson ,  Rune Simonson ,  Roland Agnemo

Inventor： Goran Bengtsson ,  Rune Simonson ,  Roland Agnemo

IPC: D21B1/02 ,  D21B1/14 ,  D21B1/16 ,  D21B1/04 ,  D21C3/00 ,  D21C9/10

CPC classification number: D21B1/14 ,  D21B1/021 ,  D21B1/16

Abstract: In accordance with the invention a chemimechanical pulp is produced from lignocellulosic material, for example wood chips, by subjecting the material to a process in which it is steamed, impregnated with alkali and peroxide, drained, pre-heated, refined and bleached. The material is impregnated in a single stage with a solution containing alkali and peroxide. Subsequent to passing an intermediate drainage and reaction stage, the material is pre-heated to a temperature of from about 50.degree. C., but not above 100.degree. C. The material is then refined in one or two stages. The material can be impregnated by immersing the same in the impregnating solution for a period of up to 20 minutes at a temperature of 15.degree.-60.degree. C., or by compressing the material in a screw press and permitting the compressed material to expand in the impregnating solution. The optimal brightness for a given peroxide charge is achieved by a balanced division of the peroxide charge between the chip impregnating stage and the bleaching stage.

Abstract translation: 根据本发明，由木质纤维素材料（例如木屑）通过对其进行蒸煮，浸渍有碱和过氧化物，排出，预热，精制和漂白的方法来生产化学机械纸浆。 将材料用含有碱和过氧化物的溶液浸渍在单一阶段。 在通过中间排水和反应阶段之后，将材料预热至约50℃，但不高于100℃的温度。然后将材料在一个或两个阶段中精制。 可以在15〜60℃的温度下浸渍浸渍溶液浸渍20分钟以上，或通过在螺旋压机中压缩该材料并使压缩材料膨胀 浸渍溶液。 通过在芯片浸渍阶段和漂白阶段之间平衡分配过氧化物电荷来实现给定过氧化物电荷的最佳亮度。

公开(公告)号：US4900399A

公开(公告)日：1990-02-13

申请号：US196796

申请日：1988-05-16

Applicant: Goran Bengtsson ,  Rune Simonson ,  Roland Agnemo

Inventor： Goran Bengtsson ,  Rune Simonson ,  Roland Agnemo

IPC: D21B1/02 ,  D21B1/14 ,  D21B1/16 ,  D21C3/22

CPC classification number: D21B1/021 ,  D21B1/14 ,  D21B1/16

Abstract: Chemimechanical pulp is produced from lignocellulosic material in a process in which the material is impregnated in two stages. The material is treated in the first stage with alkaline and, subsequent to passing an intermediate draining and reaction step, in the second stage with a solution that contains peroxide. The quantities of alkali and peroxide charged are fully optional and are independent of one another. The material is then optionally subjected to a further drainage and reaction step, and thereafter pre-heated at a temperature of between 50.degree. C. and 100.degree. C., whereafter the material is refined in one or two stages.The optimal brightness of the processed pulp for a given peroxide consumption is achieved by a balanced division of the peroxide charge between chip impregnation and bleaching.

Abstract translation: 在木材纤维素材料的两个阶段浸渍材料的过程中生产化学机械纸浆。 该材料在第一阶段用碱性处理，并且在通过中间排水和反应步骤的第二阶段中用含有过氧化物的溶液处理。 加入的碱和过氧化物的量是完全可选的，彼此独立。 然后将材料任选地进行进一步的排水和反应步骤，然后在50℃至100℃的温度下预热，之后将材料在一个或两个阶段中精制。 对于给定的过氧化物消耗，加工纸浆的最佳亮度通过在芯片浸渍和漂白之间的过氧化物电荷的平衡分配来实现。