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公开(公告)号：US06866748B2
公开(公告)日：2005-03-15
申请号：US10162549
申请日：2002-06-06
CPC分类号： C01B17/34 , D21C11/0007
摘要： The present invention provides a process for preparing polysulfide. More particularly, the process of the present invention allows one to prepare the amount of polysulfide needed using clarified white liquor, and to be used when and where it is needed during the cooking process. The process comprises reacting alkaline digesting liquor after clarification with a catalytic amount of a transition metal oxide catalyst, most preferably manganese dioxide. The reaction is conducted at a temperature of 98° C. or less, and is conducted for a short period of time, e.g., less than five minutes, with no oxygen gas or air being introduced with the catalyst and the main flow of clarified liquor.
摘要翻译： 本发明提供了制备多硫化物的方法。 更具体地，本发明的方法允许使用澄清的白液制备所需的多硫化物的量，并且在烹饪过程中需要何时和何地使用。 该方法包括使澄清后的碱性消化液与催化量的过渡金属氧化物催化剂，最优选二氧化锰反应。 该反应在98℃或更低的温度下进行，并且进行短时间，例如少于5分钟，没有氧气或空气引入催化剂和澄清液体的主流 。
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2.发明授权Method to improve final bleached pulp strength properties by adjusting the CI02:03 ration within a single (D/Z) stage of the bleaching process 失效通过在漂白过程的单（D / Z）阶段内调节CI02:03比例来提高最终漂白纸浆强度性能的方法公开(公告)号：US06174409B1
公开(公告)日：2001-01-16
申请号：US08934119
申请日：1997-09-19
IPC分类号： D21C914
摘要： Methods of bleaching cellulose pulp using chlorine dioxide and ozone in one and the same single stage of a bleaching sequence having a plurality of stages are presented. In its broadest embodiment the method comprises controlling a ratio of chlorine dioxide to ozone within a single stage of a first bleaching sequence in a range effective to achieve strength characteristics of a final paper elaborated from the first bleaching sequence at least as great as strength characteristics when compared to a control bleaching sequence, the control bleaching sequence being the same in all respects as the first bleaching sequence except not employing ozone in a stage, and for essentially the same final brightness of pulp elaborated from the first and the control bleaching sequence. Cellulose pulps made using the methods of the invention are also described.
摘要翻译： 提出了使用二氧化氯和臭氧漂白纤维素纸浆的方法，该方法在具有多个阶段的漂白顺序的同一个单一阶段中。 在其最广泛的实施方案中，该方法包括在有效实现从第一漂白序列形成的最终纸的强度特性的范围内控制第一漂白序列的单个阶段内的二氧化氯与臭氧的比例，至少与强度特性一样大 与对照漂白序列相比，控制漂白序列在所有方面与第一漂白顺序相同，除了在阶段中不使用臭氧，以及从第一和控制漂白序列制备的纸浆的基本相同的最终亮度。 还描述了使用本发明的方法制备的纤维素纸浆。
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公开(公告)号：US20050034825A1
公开(公告)日：2005-02-17
申请号：US10946157
申请日：2004-09-21
申请人： V.S. Sundaram , Derek Hornsey , Sebastien Corbeil , Steven Fisher
发明人： V.S. Sundaram , Derek Hornsey , Sebastien Corbeil , Steven Fisher
摘要： Provided is a process for bleaching pulp with ozone. The process involves preparing a slurry of cellulosic pulp having a consistency in fibers of from 1-5 weight %. Such a low consistency slurry is then mixed with ozone under high shear conditions. The ozone is then maintained in contact with the cellulosic fibers to effect bleaching of the fibers. The present process offers the advantages of bleaching using a low consistency slurry, with the added advantages of employing ozone.
摘要翻译： 提供了用臭氧漂白纸浆的方法。 该方法包括制备具有1-5重量％纤维稠度的纤维素浆浆。 然后将这种低稠度浆液与高剪切条件下的臭氧混合。 然后将臭氧与纤维素纤维保持接触以实现纤维的漂白。 本方法提供了使用低浓度浆料漂白的优点，并且具有使用臭氧的附加优点。
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公开(公告)号：US06793771B2
公开(公告)日：2004-09-21
申请号：US10463156
申请日：2003-06-16
IPC分类号： D21C914
摘要： Provided is a process for bleaching pulp with ozone. The process involves preparing a slurry of cellulosic pulp having a consistency in fibers of from 1-5 weight %. Such a low consistency slurry is then mixed with ozone under high shear conditions. The ozone is then maintained in contact with the cellulosic fibers to effect bleaching of the fibers. The present process offers the advantages of bleaching using a low consistency slurry, with the added advantages of employing ozone.
摘要翻译： 提供了用臭氧漂白纸浆的方法。 该方法包括制备具有1-5重量％纤维稠度的纤维素浆浆。 然后将这种低稠度浆液与高剪切条件下的臭氧混合。 然后将臭氧与纤维素纤维保持接触以实现纤维的漂白。 本方法提供了使用低浓度浆料漂白的优点，并且具有使用臭氧的附加优点。
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公开(公告)号：US06579412B2
公开(公告)日：2003-06-17
申请号：US10201248
申请日：2002-07-24
IPC分类号： D21C914
摘要： Provided is a process for bleaching pulp with ozone. The process involves preparing a slurry of cellulosic pulp having a consistency in fibers of from 1-5 weight %. Such a low consistency slurry is then mixed with ozone under high shear conditions. The ozone is then maintained in contact with the cellulosic fibers to effect bleaching of the fibers. The present process offers the advantages of bleaching using a low consistency slurry, with the added advantages of employing ozone.
摘要翻译： 提供了用臭氧漂白纸浆的方法。 该方法包括制备具有1-5重量％纤维稠度的纤维素浆浆。 然后将这种低稠度浆液与高剪切条件下的臭氧混合。 然后将臭氧与纤维素纤维保持接触以实现纤维的漂白。 本方法提供了使用低浓度浆料漂白的优点，并且具有使用臭氧的附加优点。
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