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1. 发明公开

EP1443144A1 Method of bleaching cellulose pulp and apparatus therefore 有权
标题翻译： Verfahren zum bleichen von Zellulose und Apparaturdafür
公开(公告)号：EP1443144A1
公开(公告)日：2004-08-04
申请号：EP04075187.7
申请日：2004-01-22
申请人： KVAERNER PULPING AB
发明人： Snekkenes, Vidar , Gustavsson, Lennart
IPC分类号： D21C9/02 , D21C9/10
CPC分类号： D21C9/02 , D21C9/10 , D21C9/1057
摘要： The invention relates to a method of bleaching cellulose pulp in a bleach line having at least two bleaching steps D 1 ,D 2 of alkaline or acidic type, and a bleaching line for the method, in which the filtrate distribution is led up through the bleaching line in counter-current to the flow of cellulose pulp established in the bleaching line.
Instead of a conventional filtrate distribution including filtrate tanks, a single joint main conduit 1 is used for the bleaching steps of the same type.
Wash filtrate obtained from the wash steps of the same type used after or before the bleaching step, is led to a branch point A2, A4, A6 on the main conduit 1, that is positioned after the branch point for drawing off of wash and/or dilution liquor for the wash step in question A1, A3, A5, A7. All branch points in the joint main conduit are in open communication with each other in the main conduit, at least as seen in a direction from the last bleaching step. Hereby, a simplified and improved filtrate distribution system with an improved runnability is obtained.
摘要翻译：本发明涉及一种在具有至少两种碱性或酸性漂白步骤D1，D2的漂白线中漂白纤维素纸浆的方法，以及用于该方法的漂白生产线，其中滤液分配通过漂白生产线引导与漂白线中建立的纤维素浆液流逆流。除了包括滤液槽的常规滤液分配之外，单个主要管道1用于相同类型的漂白步骤。从漂白步骤之后或漂白步骤之前使用的相同类型的洗涤步骤洗涤的滤液被导入主导管1上的分支点A2，A4，A6，该分支点位于分支点之后用于抽出的洗涤和/或稀释液用于问题A1，A3，A5，A7中的洗涤步骤。至少从最后一个漂白步骤的方向看，联接主管道中的所有分支点在主管道中彼此开放连通。因此，获得了具有改进的运行性能的简化和改进的滤液分配系统。

2. 发明授权

EP1443144B1 Method of bleaching cellulose pulp and apparatus therefore 有权
标题翻译：漂白纤维素和装置的方法，用于
公开(公告)号：EP1443144B1
公开(公告)日：2007-03-07
申请号：EP04075187.7
申请日：2004-01-22
申请人： Kvaerner Pulping AB
发明人： Snekkenes, Vidar , Gustavsson, Lennart
IPC分类号： D21C9/02 , D21C9/10
CPC分类号： D21C9/02 , D21C9/10 , D21C9/1057

3. 发明授权

EP1205597B1 Process for continuous cooking of pulp 有权
标题翻译：一种用于纸浆的连续蒸煮方法
公开(公告)号：EP1205597B1
公开(公告)日：2005-02-23
申请号：EP01203823.8
申请日：2001-10-09
申请人： KVAERNER PULPING AB
发明人： Snekkenes, Vidar , Gustavsson, Lennart , Olsson, Sven-Erik
IPC分类号： D21C3/24 , D21C9/04
CPC分类号： D21C9/04 , D21C3/24

4. 发明公开

EP1203841A1 Process for continuous cooking of pulp 审中-公开
标题翻译：连续蒸煮纸浆的过程
公开(公告)号：EP1203841A1
公开(公告)日：2002-05-08
申请号：EP01203810.5
申请日：2001-10-08
申请人： Kvaerner Pulping AB
发明人： Snekkenes, Vidar , Gustavsson, Lennart , Olsson, Sven-Erik
IPC分类号： D21C3/24 , D21C9/04
CPC分类号： D21C3/24 , D21C9/04
摘要： The invention relates to a process for continuous cooking of wood chips at elevated pressure and temperature in a vertical digester (1) for production of chemically dissolved pulp.
Fibre material and cooking liquor are introduced at the top of the digester and pulp is discharged from the bottom of the digester (1), via a line (20) in which the pulp is maintained at substantially the same pressure level, to a pressurized wash (7). More than 50% of the used cooking liquor (black liquor) which is extracted from the system in total is extracted from the wash filtrate of the pressurized wash. At the same time a small portion of the wash filtrate is also to be recirculated to the bottom of the digester as dilution liquid. The pressurized wash is regulated so that a high temperature is maintained in the wash filtrate.
The invention permits increased production in overloaded digesters where substantial extractions of cooking liquor from the digester are made difficult by the increased pulp speed down through the digester.
摘要翻译：本发明涉及一种在垂直蒸煮器（1）中在提高的压力和温度下连续蒸煮木片以生产化学溶解的纸浆的方法。纤维材料和蒸煮液在蒸煮器的顶部引入，并且纸浆从蒸煮器（1）的底部通过其中纸浆保持在基本相同压力水平的管线（20）排出到加压清洗器（7）。总体上从系统中提取的用过的蒸煮液（黑液）的50％以上从加压清洗液的洗液中提取。同时，一小部分洗涤滤液也作为稀释液再循环到蒸煮器的底部。调节加压洗涤物以使洗涤滤液中保持高温。本发明允许在过载的消化器中增加产量，在消化器中，由于增加的纸浆速度通过消化器而使从消化器中大量提取的蒸煮液变得困难。

5. 发明公开

EP1205597A1 Process for continuous cooking of pulp 有权
标题翻译： Verfahren zum kontinuierlichen Kochen von Zellstoff
公开(公告)号：EP1205597A1
公开(公告)日：2002-05-15
申请号：EP01203823.8
申请日：2001-10-09
申请人： KVAERNER PULPING AB
发明人： Snekkenes, Vidar , Gustavsson, Lennart , Olsson, Sven-Erik
IPC分类号： D21C3/24 , D21C9/04
CPC分类号： D21C9/04 , D21C3/24
摘要： The invention relates to a process for continuous cooking of wood chips at elevated pressure and temperature in a vertical digester (1) for production of chemically dissolved pulp.
Fibre material and cooking liquor are introduced at the top of the digester and pulp is discharged from the bottom of the digester (1), via a line (20) in which the pulp is maintained at substantially the same pressure level, to a pressurized wash (7). More than 50% of the used cooking liquor (black liquor) which is extracted from the system in total is extracted from the wash filtrate of the pressurized wash. At the same time a small portion of the wash filtrate is also to be recirculated to the bottom of the digester as dilution liquid. The extraction is regulated so that a net co-current flow is established at the bottom of the digester.
The invention permits increased production in overloaded digesters where substantial extractions of cooking liquor from the digester are made difficult by the increased pulp speed down through the digester.
摘要翻译：本发明涉及一种用于生产化学溶解纸浆的立式蒸煮器（1）中以升高的压力和温度连续烹饪木屑的方法。在蒸煮器的顶部引入纤维材料和蒸煮液，并且将纸浆从蒸煮器（1）的底部通过将纸浆保持在基本上相同压力水平的管线（20）排出到加压洗涤（7）。从加压洗涤液的洗涤滤液中提取超过50％的从系统中提取的用过的蒸煮液（黑液）。同时洗涤滤液的一小部分也作为稀释液体再循环到消化器的底部。调节萃取，使得在蒸煮器底部建立净并流。本发明允许在超重蒸煮器中增加生产，其中通过蒸煮器提高的纸浆速度使来自蒸煮器的蒸煮液的实质性提取变得困难。

6. 发明公开

EP1584743A1 Method and device for handling cellulose pulp 有权转让
标题翻译： Verfahren und Vorrichtung zurBeförderungvon Zellstoff
公开(公告)号：EP1584743A1
公开(公告)日：2005-10-12
申请号：EP05075727.7
申请日：2005-03-30
申请人： Kvaerner Pulping AB
发明人： Snekkenes, Vidar , Saetherasen, Jonas , Gustavsson, Lennart , Olsson, Göran
IPC分类号： D21F1/74 , D21C9/18 , D21C9/06
CPC分类号： D21F1/74
摘要： By shredding of the pulp to a finely divided dry granulate, dilution to a homogeneous consistency in the medium consistency range can take place exclusively through hydrodynamic effects from the addition of dilution fluid. The dilution fluid is added to the granulate at a position at which the granulate is in free fall in a stand pipe 22, 40 and above a level Liq LEV of diluted pulp in the stand pipe. A number of nozzles are arranged around the periphery of the stand pipe, directed in towards the centre of the stand pipe, obliquely downwards in the direction of fall of the granulate.
It is possible through this simplified procedure to avoid completely the conventional dilution screws, and this reduces the investment costs and operating costs, while at the same time unnecessary mechanical influence of the pulp fibres can be avoided.
摘要翻译：通过将纸浆粉碎成细碎的干燥颗粒，在中等稠度范围内稀释至均匀的稠度可以通过加入稀释液体的流体动力学效应进行。将稀释液加入到颗粒在立管22,40中自由落体的位置处，并在立管上的稀释纸浆的LiqLEV之上。多个喷嘴围绕立管的周边布置成朝着立管的中心朝向颗粒的坠落方向倾斜地向下倾斜。通过这种简化的程序可以完全避免常规的稀释螺钉，这样可以降低投资成本和操作成本，同时可以避免纸浆纤维的不必要的机械影响。

7. 发明公开

EP1561856A1 Method for continuous cooking of cellulose pulp 有权
标题翻译： Verfahren zum kontinuierlichen Kochen von Zellstoffpulpe
公开(公告)号：EP1561856A1
公开(公告)日：2005-08-10
申请号：EP05075245.0
申请日：2005-02-01
申请人： KVAERNER PULPING AB
发明人： Snekkenes, Vidar , Gustavsson, Lennart , Saetheraasen, Jonas
IPC分类号： D21C3/24
CPC分类号： D21C3/24 , D21C3/02 , D21C7/10 , D21C7/14
摘要： A procedure for the continuous cooking of chemical pulp, comprising an impregnation vessel 101 and a digester 102. The chips are impregnated in the impregnation vessel 101 and are fed after impregnation together with circulation fluid through a transfer line 103 to a top separator 105 on the digester 102 in order to be cooked. A fraction of the circulation fluid is withdrawn at a top separator 105 and returned to the bottom of the impregnation vessel 101 via a return line 106. Black liquor is withdrawn from the digester via a black liquor line 108 to the impregnation vessel 101.
The invention is characterised in that a heat exchanger 107 is arranged between the return line 106 and the black liquor line 108. The heat exchanger 107 allows the exchange of heat between the two lines, but does not allow the exchange of fluid. The temperature of the black liquor in the black liquor line 108 after passing through the heat exchanger 107 has been cooled by 10-15 °C.
摘要翻译：用于连续烹饪化学纸浆的方法，包括浸渍容器101和蒸煮器102.将屑浸渍在浸渍容器101中，并且在循环流体通过传输管线103浸渍之后进料到顶部分离器105上蒸煮器102以便烹饪。循环流体的一部分在顶部分离器105处被抽出，并通过回流管线106返回到浸渍容器101的底部。黑液经由黑液液体管线108从浸渍容器101中从蒸煮器中排出。本发明的特征在于，热交换器107设置在返回管线106和黑液管线108之间。热交换器107允许两条管线之间的热交换，但不允许流体的更换。通过热交换器107后的黑液液体管线108中的黑液的温度已经被冷却了10-15℃。

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