公开(公告)号：US3652386A

公开(公告)日：1972-03-28

申请号：US3652386D

申请日：1969-10-27

Applicant: MO OCH DOMSJOE AB

Inventor： NOREUS STURE ERIK OLOF ,  SMAUELSON HANS OLOF

IPC: D21C9/10 ,  D21C3/00

CPC classification number: D21C9/1036

Abstract: The invention is of particular application to the reduction of lignin content in cellulose pulps without causing deleterious degradation of the cellulose, the complex magnesium salts, such as chelates of magnesium and aliphatic alpha- and betahydroxycarboxylic acids, reducing or entirely preventing attack of oxygen on the hemicellulose and cellulose carbohydrates, without appreciably diminishing the oxidation of the lignin and its dissolution in the course of the process.

Abstract translation: 本发明特别适用于纤维素纸浆中木质素含量的降低，而不会引起纤维素的有害降解，复杂的镁盐如镁和脂族α-和β-羟基羧酸的螯合物，减少或完全防止氧的侵蚀 在半纤维素和纤维素碳水化合物上，没有明显地减少木质素的氧化及其在该过程中的溶解。

公开(公告)号：US3769152A

公开(公告)日：1973-10-30

申请号：US3769152D

申请日：1971-02-26

Applicant: MO OCH DOMSJOE AB

Inventor： SAMUELSON HANS OLOF ,  NOREUS STURE ERIK OLOF

IPC: D21C3/02 ,  D21C3/26 ,  D21C9/10

CPC classification number: D21C3/026 ,  D21C3/263

Abstract: A process is provided for the production of cellulose of high brightness from wood by digestion with alkali and oxygen in aqueous solution under moderate oxygen pressure, limiting the amount of alkali at the start of the digestion to less than that required, and progressively adding alkali as the digestion continues, while maintaining the digestion liquor at a pH within the range from about 9.2 to about 13.

Abstract translation: 提供了一种通过在中等氧气压力下用碱和氧在水溶液中消化从木材生产高亮度纤维素的方法，将消化开始时的碱量限制到小于所需的量，并逐渐加入碱作为 消化继续，同时将消化液保持在约9.2至约13的范围内的pH。

公开(公告)号：US3701712A

公开(公告)日：1972-10-31

申请号：US3701712D

申请日：1971-02-26

Applicant: MO OCH DOMSJOE AB

Inventor： SAMUELSON HANS OLOF ,  NOREUS STURE ERIK OLOF

IPC: C08B1/08 ,  D21C9/10

CPC classification number: C08B1/08 ,  D21C9/1036

Abstract: A PROCESS IS PROVIDED FOR TREATING CELLULOSIC METERIALS WITH ALKALI IN THE PRESENCE OF OXYGEN, AND PRTICULARLY AIR, AND IN THE PRESENCE OF COMPLEX MAGNESIUM SALTS OF AMINOPOLYCARBOXYLIC ACIDS OF ALKALI METAL SALTS THEREOF. THE INVENTION IS OF PARTICULAR APPLICATION TO THE REDUCTION OF LIGNIN CONTENT IN CELLULOSE PULPS AND THE DIGESTION OF WOOD CELLULOSE WITHOUT CAUSING DELETERIOUS DEGRADATION OF THE CELLULOSE, THE COMPLEX MAGNESIUM SALTS REDICING OR ENTIRELY PREVENTING ATTACK OF OXYGEN ON HEMICELLULOSE AND CELLULOSE CARBOHYDRATES, WITHOUT APPRECIABLY DIMINISHING THE OXIDATION OF THE LIGNIN AND ITS DISSOLUTION IN THE COURSE OF THE PROCESS.

公开(公告)号：US3886034A

公开(公告)日：1975-05-27

申请号：US40269773

申请日：1973-10-02

Applicant: MO OCH DOMSJOE AB

Inventor： NOREUS STURE ERIK OLOF

IPC: D21C3/22 ,  D21C7/12

CPC classification number: D21C3/228

Abstract: A process is provided for determining the conditions needed in controllably obtaining a predetermined degree of delignification and therefore a predetermined Kappa number in the manufacture of sulfate pulp. A sample is taken of the alkaline pulping liquor at an early stage in the pulping of wood of the type to be pulped, the sample is titrated with an acid to the end point at which the conductivity of the sample has decreased to a relatively constant value, the NaOH (g/l) concentration is determined, and from this NaOH concentration at the desired Kappa value in the finished sulfate pulp the ''''H'''' factor is determined, which prescribed the pulping time and temperature relationship needed to obtain pulp of this Kappa value. Then the pulping time and cooking temperature are controlled during the pulping in accordance with such ''''M'''' factor.

Abstract translation: 提供了一种方法，用于确定可控地获得预定程度的脱木素所需的条件，因此确定硫酸盐纸浆的制造中的预定卡伯值。 在制浆类型的木浆的早期阶段取出碱性制浆液的样品，用酸滴定样品至样品的电导率降低到相对恒定值的终点 ，确定NaOH（g / l）浓度，并且从硫酸盐纸浆中所需的Kappa值的该NaOH浓度确定“H”因子，其规定获得该Kappa纸浆所需的制浆时间和温度关系 值。 然后根据这种“M”因素在制浆期间控制制浆时间和烹饪温度。

公开(公告)号：US3652385A

公开(公告)日：1972-03-28

申请号：US3652385D

申请日：1970-05-12

Applicant: MO OCH DOMSJOE AB

Inventor： NOREUS STURE ERIK OLOF ,  SAMUELSON HANS OLOF

IPC: D21C9/10 ,  D21C3/00

CPC classification number: D21C9/1026 ,  D21C9/1005

Abstract: Cellulosic materials from which metal ions have been removed by acids or complexing agents is delignified with alkali in the presence of oxygen, and particularly air, and in the presence of magnesium compounds such as, for instance, chelates of magnesium and aliphatic alpha- and beta-hydroxycarboxylic acids. The invention is of particular application to the reduction of lignin content in cellulose pulps without causing deleterious degradation of the cellulose, the magnesium compounds reducing or entirely preventing attack of oxygen on the hemicellulose and cellulose carbohydrates, without appreciably diminishing the oxidation of the lignin and its dissolution in the course of the process. The process is also useful to obtain a controlled dissolution of the hemicellulose.

Abstract translation: 通过酸或络合剂除去金属离子的纤维素材料在碱存在下，在氧气，特别是空气的存在下，并且在镁化合物例如镁和脂族α和β的螯合物的存在下脱木质素 - 羟基羧酸。 本发明特别适用于纤维素纸浆中木质素含量的降低，而不会引起纤维素的有害降解，镁化合物减少或完全防止半纤维素和纤维素碳水化合物上的氧侵蚀，而不会明显地减少木质素及其氧化 在过程中解散。 该方法也可用于获得半纤维素的受控溶解。