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1. 发明授权

US06458242B1 Ozone bleaching process using oxalic acid addition 失效
标题翻译：使用草酸添加臭氧漂白工艺
公开(公告)号：US06458242B1
公开(公告)日：2002-10-01
申请号：US09786741
申请日：2001-03-08
申请人： Monica Bokström
发明人： Monica Bokström
IPC分类号： D21C9153
CPC分类号： D21C9/1036 , D21C9/153
摘要： Processes are disclosed for bleaching pulp with ozone in an environmentally friendly bleaching plant. The processes include removing a first filtrate from the pulp, bleaching the treated pulp with ozone, washing the bleached pulp with a washing liquid to provide a washed bleached pulp and a second filtrate including oxalic acid, recycling the second filtrate to the pulp prior to the bleaching step, and transferring the first filtrate to the bleached pulp.
摘要翻译：公开了在环境友好的漂白设备中用臭氧漂白纸浆的方法。该方法包括从纸浆中除去第一滤液，用臭氧漂洗处理的纸浆，用洗涤液洗涤漂白的纸浆以提供洗涤的漂白纸浆和含有草酸的第二滤液，将第二滤液再循环到纸浆前漂白步骤，并将第一滤液转移到漂白纸浆中。

2. 发明授权

US06454900B2 Method for two-stage oxygen delignification of chemical pulp 失效
标题翻译：化学纸浆二级氧脱木质方法
公开(公告)号：US06454900B2
公开(公告)日：2002-09-24
申请号：US09886913
申请日：2001-06-21
申请人： Monica Bokström , Pia Mellander , Solveig Nordén
发明人： Monica Bokström , Pia Mellander , Solveig Nordén
IPC分类号： D21C326
CPC分类号： D21C9/147
摘要： Methods for oxygen delignification of a pulp are disclosed, including initially delignifying the pulp at a delignification temperature of less than 90° C., adding oxygen to the pulp so that the oxygen is present during the initial delignification step, and further delignifying the pulp at a delignification temperature of greater than 90° C., the difference between the two delignification temperatures being less than about 20° C., and the pressure being greater in the initial delignification step. The method also includes adding alkali solely to the initial delignification step in order to obtain high alkalinity therein.
摘要翻译：公开了一种纸浆氧脱木质的方法，包括首先在低于90℃的脱木质素温度下脱木质纤维，向纸浆中加入氧，使得在初始脱木质步骤期间存在氧，并进一步脱木素脱木素温度大于90℃，两个脱木质素温度之间的差异小于约20℃，并且初始脱木质步骤中的压力较大。该方法还包括仅在初始脱木素步骤中加入碱以获得其中的高碱度。

3. 发明授权

US06221206B1 Method for oxygen delignification of a digested pulp 失效
标题翻译：消化纸浆氧脱木质的方法
公开(公告)号：US06221206B1
公开(公告)日：2001-04-24
申请号：US08927925
申请日：1997-09-11
申请人： Monica Bokström , Pia Mellander , Solveig Nordén
发明人： Monica Bokström , Pia Mellander , Solveig Nordén
IPC分类号： D21C326
CPC分类号： D21C9/147
摘要： Methods for oxygen delignification of a pulp are disclosed, including initially delignifying the pulp at a delignification temperature of less than 90° C., adding oxygen to the pulp so that the oxygen is present during the initial delignification step, and further delignifying the pulp at a delignification temperature of greater than 90° C., the difference between the two delignification temperatures being less than about 20° C., and the pressure being greater in the initial delignification step. The method also includes adding alkali solely to the initial delignification step in order to obtain high alkalinity therein.
摘要翻译：公开了一种纸浆氧脱木质的方法，包括首先在低于90℃的脱木质素温度下脱木质纤维，向纸浆中加入氧，使得在初始脱木质步骤期间存在氧，并进一步脱木素脱木素温度大于90℃，两个脱木质素温度之间的差异小于约20℃，并且初始脱木质步骤中的压力较大。该方法还包括仅在初始脱木素步骤中加入碱以获得其中的高碱度。

4. 发明授权

US06319357B1 Method for two-stage oxygen bleaching and delignification of chemical pulp 失效
标题翻译：化学纸浆两步氧漂和脱木质的方法
公开(公告)号：US06319357B1
公开(公告)日：2001-11-20
申请号：US09759032
申请日：2001-01-12
申请人： Monica Bokström , Pia Mellander , Solveig Nordén
发明人： Monica Bokström , Pia Mellander , Solveig Nordén
IPC分类号： D21C9147
CPC分类号： D21C9/147
摘要： Methods for oxygen delignification of a pulp are disclosed, including initially delignifying the pulp at a delignification temperature of less than 90° C., adding oxygen to the pulp so that the oxygen is present during the initial delignification step, and further delignifying the pulp at a delignification temperature of greater than 90° C., the difference between the two delignification temperatures being less than about 20° C., and the pressure being greater in the initial delignification step. The method also includes adding alkali solely to the initial delignification step in order to obtain high alkalinity therein.
摘要翻译：公开了一种纸浆氧脱木质的方法，包括首先在低于90℃的脱木质素温度下脱木质纤维，向纸浆中加入氧，使得在初始脱木质步骤期间存在氧，并进一步脱木素脱木素温度大于90℃，两个脱木质素温度之间的差异小于约20℃，并且初始脱木质步骤中的压力较大。该方法还包括仅在初始脱木素步骤中加入碱以获得其中的高碱度。

5. 发明授权

US06238517B1 Method for controlling oxygen delignification of pulp 有权
标题翻译：控制纸浆氧脱木质的方法
公开(公告)号：US06238517B1
公开(公告)日：2001-05-29
申请号：US09308820
申请日：1999-05-25
申请人： Monica Bokström , Jan-Eric Häggqvist
发明人： Monica Bokström , Jan-Eric Häggqvist
IPC分类号： D21C712
CPC分类号： D21C9/1052 , D21C9/147
摘要： Methods of controlling oxygen delignification processes are disclosed including providing chemicals for a first oxygen delignification step, conducting the first oxygen delignification step with the chemicals, conducting a second oxygen delignification step at a predetermined temperature to produce a delignified pulp, measuring the final kappa number of the delignified pulp subsequent to the second oxygen delignification step, adjusting the chemicals provided for the first oxygen delignification step based upon the difference between the actual kappa number reduction and the desired kappa number reduction for the pulp, and adjusting the predetermined temperature based on the chemicals provided to the first oxygen delignification step in order to provide the delignified pulp at a final pH of from about 10.5 to about 11.5.
摘要翻译：公开了控制氧脱木质过程的方法，包括提供用于第一氧脱木质步骤的化学品，用化学品进行第一氧脱木质步骤，在预定温度下进行第二氧脱木素步骤以产生脱木素纸浆，测量最终卡氏值在第二氧脱木质步骤之后的脱木素纸浆，基于实际的卡伯值降低和纸浆的期望的卡伯值减少之间的差异来调节为第一氧脱木质素步骤提供的化学品，并且基于化学品调节预定温度提供给第一氧脱木质步骤，以便提供最终pH为约10.5至约11.5的脱木素纸浆。

6. 发明授权

US06221207B1 Oxygen delignification of pulp in two stages with low pressure steam heating between stages 失效
标题翻译：纸浆的氧脱木质在两个阶段之间的低压蒸汽加热
公开(公告)号：US06221207B1
公开(公告)日：2001-04-24
申请号：US09155119
申请日：1998-09-22
申请人： Kjell Forslund , Rune Larsson , Matts Sundin , Monica Bokström
发明人： Kjell Forslund , Rune Larsson , Matts Sundin , Monica Bokström
IPC分类号： D21C9147
CPC分类号： D21C9/147 , D21C9/1026
摘要： Methods for oxygen delignification of chemical pulps are disclosed including contacting the chemical pulp with oxygen first in an upstream reactor vessel and then in a downstream reactor vessel. The upstream reactor vessel is maintained at pressures of greater than about 3 bar, and the downstream reactor vessel is maintained at temperatures of between about 90 and 120° C. and corresponding predetermined pressures. Heating of the partially delignified chemical pulp between the upstream and downstream reactors is accomplished by contacting the partially delignified chemical pulp with low pressure steam.
摘要翻译：公开了化学纸浆的氧脱木质素的方法，包括首先在上游反应器容器中然后在下游反应器容器中接触化学纸浆与氧气。上游反应器容器保持在大于约3巴的压力，并且下游反应器容器保持在约90和120℃之间的温度以及相应的预定压力。通过使部分脱木质化学纸浆与低压蒸汽接触来实现上游和下游反应器之间部分脱木质化学纸浆的加热。

7. 发明授权

US07294227B2 Method and system for the treatment of pulp prior to ozone bleaching 失效
标题翻译：在臭氧漂白之前处理纸浆的方法和系统
公开(公告)号：US07294227B2
公开(公告)日：2007-11-13
申请号：US10497753
申请日：2002-12-04
申请人： Monica Bokström , Per Åström
发明人： Monica Bokström , Per Åström
IPC分类号： D21C9/10
CPC分类号： D21C9/153 , D21C7/08 , D21C9/10
摘要： A system for treating pulp comprises a dewatering device (2) for dewatering the pulp to a fiber concentration of at least 20%, a closed pulp-shredding vessel (16) for shredding the dewatered pulp, and an outlet pipe (22) from the pulp-shredding vessel. A transport screw (18) is arranged in the outlet pipe for transporting the shredded pulp from the pulp-shredding vessel through the outlet pipe through a reactor vessel (6) for bleaching the shredded pulp through reaction with ozone gas. The outlet pipe (22) is designed with a heightened roof portion (27), so that an upper gas space (29) free from pulp is formed in the outlet pipe between the roof portion and the transport screw. A flow-restraining member in the form of a partition wall (31) is arranged in the upper gas space in the outlet pipe for restraining the gas flow through the gas space, whereby the pumping action of the transport screw in the outlet pipe is decreased.
摘要翻译：一种用于处理纸浆的系统包括用于使纸浆脱水至少20％的纤维浓度的脱水装置（2），用于粉碎脱水纸浆的封闭纸浆粉碎容器（16）和来自纸浆破碎船。输出螺杆（18）布置在出口管中，用于通过反应器容器（6）将来自纸浆粉碎容器的切碎的纸浆通过出口管输送，用于通过与臭氧气体反应漂白碎纸浆。出口管22被设计成具有较高的屋顶部分27，从而在屋顶部分和输送螺杆之间的出口管中形成没有纸浆的上部气体空间29。在出口管的上部气体空间内设有分隔壁（31）形式的限流部件，用于限制通过气体空间的气体流动，从而输出管道中的输送螺杆的泵送作用减小。

8. 发明授权

US06989078B1 System for conveying shredded pulp to an ozone reactor 失效
标题翻译：将破碎的纸浆输送到臭氧反应堆的系统
公开(公告)号：US06989078B1
公开(公告)日：2006-01-24
申请号：US10009052
申请日：2000-05-24
申请人： Monica Bokström , Per Åström
发明人： Monica Bokström , Per Åström
IPC分类号： D21C1/16 , D21C7/06 , D21C9/53
CPC分类号： D21C9/10 , D21C9/153 , D21C9/18
摘要： Methods and systems for the treatment of pulp are provided. The methods include dewatering pulp to a fiber concentration of at least 20%, shredding the dewatered pulp in a closed pulp shredding vessel, transporting the shredded pulp without compression continuously out of the pulp shredding vessel through an outlet pipe which is kept completely filled with passing pulp, directly transporting the shredded pulp to a reaction vessel through a gas-tight conduit gas sealed from the surroundings and communicating with the outlet pipe and the reaction vessel, bleaching the shredded pulp in the reaction vessel with ozone gas, and regulating the gas pressure in the pulp shredding vessel and in the reaction vessel so that ozone gas is prevented from leaking upstream through the outlet pipe.
摘要翻译：提供了用于处理纸浆的方法和系统。所述方法包括将纸浆脱水至至少20％的纤维浓度，将封闭的纸浆粉碎容器中的脱水纸浆切碎，将未经压缩的切碎的纸浆通过出口管连续输送出纸浆粉碎容器，该出口管保持完全充满通过纸浆，通过从周围密封并与出口管和反应容器连通的气密导管气体将切碎的纸浆直接输送到反应容器，用臭氧气体漂洗反应容器中的切碎的纸浆，并调节气体压力在纸浆粉碎容器和反应容器中，以防止臭氧气体通过出口管向上游泄漏。

9. 发明申请

US20050121158A1 Method and system for the treatment of pulp prior to ozone bleaching 失效
标题翻译：在臭氧漂白之前处理纸浆的方法和系统
公开(公告)号：US20050121158A1
公开(公告)日：2005-06-09
申请号：US10497753
申请日：2002-12-04
申请人： Monica Bokström , Per Astrom
发明人： Monica Bokström , Per Astrom
IPC分类号： D21C7/08 , D21C9/10 , D21C9/153 , D21C9/18 , D21B1/16 , D21C7/06
CPC分类号： D21C9/153 , D21C7/08 , D21C9/10
摘要： A system for treating pulp comprises a dewatering device (2) for dewatering the pulp to a fiber concentration of at least 20%, a closed pulp-shredding vessel (16) for shredding the dewatered pulp, and an outlet pipe (22) from the pulp-shredding vessel. A transport screw (18) is arranged in the outlet pipe for transporting the shredded pulp from the pulp-shredding vessel through the outlet pipe through a reactor vessel (6) for bleaching the shredded pulp through reaction with ozone gas. The outlet pipe (22) is designed with a heightened roof portion (27), so that an upper gas space (29) free from pulp is formed in the outlet pipe between the roof portion and the transport screw. A flow-restraining member in the form of a partition wall (31) is arranged in the upper gas space in the outlet pipe for restraining the gas flow through the gas space, whereby the pumping action of the transport screw in the outlet pipe is decreased.
摘要翻译：一种用于处理纸浆的系统包括用于使纸浆脱水至少20％的纤维浓度的脱水装置（2），用于粉碎脱水纸浆的封闭纸浆粉碎容器（16）和来自纸浆破碎船。输送螺杆（18）布置在出口管中，用于通过反应器容器（6）将来自纸浆粉碎容器的切碎的纸浆通过出口管输送，用于通过与臭氧气体反应漂白碎纸浆。出口管22被设计成具有较高的屋顶部分27，从而在屋顶部分和输送螺杆之间的出口管中形成没有纸浆的上部气体空间29。在出口管的上部气体空间内设有分隔壁（31）形式的限流部件，用于限制通过气体空间的气体流动，从而输出管道中的输送螺杆的泵送作用减小。

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