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1. 发明授权

US06790313B1 Method of cleaning sulfide contaminated condensates 有权
标题翻译：清洁硫化物污染的冷凝物的方法
公开(公告)号：US06790313B1
公开(公告)日：2004-09-14
申请号：US09856961
申请日：2001-11-09
申请人： Kent K. Sandquist , Olle Wennberg
发明人： Kent K. Sandquist , Olle Wennberg
IPC分类号： D21C1106
CPC分类号： D21C11/08 , D21C11/06
摘要： A method to remove sulfides and other volatile contaminants from liquor vapor condensate in a pulp manufacturing process, where the mentioned liquor vapor condensate is fed into a stripper, which is part of a closed loop system including the stripper, a regenerative thermal oxidization process (RTO) and a SO2 scrubber, in which loop a gas is circulated, preferably air, and such components formed or stripped off, in this loop whereafter the circulating gas is stripped off sulfides and other volatile components from the liquor vapor condensate, whereafter the gas stream is fed into a RTO process, where the stripped off contaminants are combusted are under formation of SO2 and thereafter the SO2 enriched gas is led to a SO2 scrubber, where preferably alkali is used as absorption medium, and thereafter the circulating gas is returned back into the stripper.
摘要翻译：一种在纸浆生产过程中从液体蒸汽冷凝物中除去硫化物和其它挥发性污染物的方法，其中将所提及的液体蒸汽冷凝物送入汽提器，汽提器是包括汽提塔的闭环系统的一部分，再生热氧化过程（RTO ）和SO 2洗涤器，其中气体循环，优选空气，并且这种组分在该环中形成或剥离，之后循环气体从液体蒸气冷凝物中除去硫化物和其它挥发性组分，之后气流进入RTO过程，其中汽脱的污染物在SO2的形成下，然后将富SO 2的气体导入SO 2洗涤器，其中优选使用碱作为吸收介质，然后将循环气体返回到脱模剂。

2. 发明授权

US06210455B1 Evaporation apparatus for evaporation of liquids 有权
标题翻译：用于蒸发液体的蒸发装置
公开(公告)号：US06210455B1
公开(公告)日：2001-04-03
申请号：US09284334
申请日：1999-04-09
申请人： Lars Olausson , Michael Thiede , Olle Wennberg , Anders Wernqvist , Martin Collander
发明人： Lars Olausson , Michael Thiede , Olle Wennberg , Anders Wernqvist , Martin Collander
IPC分类号： B01D4508
CPC分类号： B01D1/305 , B01D1/06 , D21C11/10 , Y10S55/23
摘要： An evaporation apparatus for evaporation of, for example, spent liquor from pulp cooking. The apparatus has a vertical cylinder that has evaporation surfaces disposed therein. An outlet opening is defined in a widened part of the cylinder to receive driven-off steam. A skirt is disposed in the cylinder and surrounds the evaporated liquid and driven-off steam and has a diameter that is smaller than a diameter of the widened part. The skirt has an open bottom and a skirt opening is defined in a portion of the skirt that is facing away from the outlet opening.
摘要翻译：用于蒸发例如来自纸浆烹饪的废液的蒸发装置。该装置具有设置在其中的蒸发表面的垂直圆柱体。出口开口限定在气缸的加宽部分中以接收被驱除的蒸汽。裙部设置在圆筒中并且围绕蒸发的液体和被驱除的蒸汽并且具有小于加宽部分的直径的直径。裙部具有敞开的底部，并且裙部开口限定在裙部的远离出口开口的部分中。

3. 发明授权

US5944950A Process for the final evaporation of black liquor 失效
标题翻译：黑液最终蒸发的过程
公开(公告)号：US5944950A
公开(公告)日：1999-08-31
申请号：US817586
申请日：1997-06-27
申请人： Lars Olausson , Olle Wennberg
发明人： Lars Olausson , Olle Wennberg
IPC分类号： B01D1/26 , D21C11/10
CPC分类号： B01D1/26 , D21C11/10 , Y10S159/08 , Y10S203/16
摘要： The process for the final evaporation has at least two evaporation appliances. These appliances are coupled in series with respect to the black liquor and in parallel with the live steam (primary steam), which drives the evaporation, and with the secondary steam that is generated by the evaporation. The pressure of the primary steam that is supplied to the appliance(s) where the liquor concentration is at the highest concentration is greater than the pressure of the primary steam supplied to the other appliances where the liquor concentration is not so high.
摘要翻译： PCT No.PCT / SE95 / 00991 Sec。 371日期：1997年6月27日 102（e）日期1997年6月27日PCT提交1995年9月5日PCT公布。 WO96 / 12848 PCT公开号日期1996年5月2日最终蒸发的过程至少有两个蒸发器具。这些电器相对于黑液串联耦合，并与驱动蒸发的活蒸汽（初级蒸汽）并联，并与蒸发产生的二次蒸汽并联。供给到液体浓度处于最高浓度的器具的初级蒸汽的压力大于供应到其它电器的初级蒸汽的压力，其中液体浓度不是很高。

4. 发明授权

US6024833A Process for removing metals and recovering a chelating agent from a bleach plant waste liquor 失效
标题翻译：从漂白植物废液中除去金属和回收螯合剂的方法
公开(公告)号：US6024833A
公开(公告)日：2000-02-15
申请号：US850737
申请日：1997-05-02
申请人： Olle Wennberg
发明人： Olle Wennberg
IPC分类号： D21C11/00 , D21C11/04 , D21C11/10
CPC分类号： D21C11/0028 , D21C11/0078 , Y10S210/928
摘要： Provided is a process for removing metals from a bleaching plant spent liquor and recovering a chelating agent which includes the steps of: heating a spent liquor containing a chelate comprising metals bound in a chelating agent to a temperature of at least about 140.degree. C. to break bonds in the chelate and release metals from the chelate; increasing the content of at least one of carbonate or sulphide in an alkaline material comprising at least one of green liquor or white liquor to form a carbonate or sulphide enhanced alkaline material; contacting the heated spent liquor with the alkaline material to form a solution containing precipitated metals, wherein the alkaline material is added in an amount sufficient to precipitate a majority of the released metals out of the solution; filtering the solution to separate the precipitated metals from the solution and form a filtrate containing recovered chelating agent; and supplying at least a portion of the recovered chelating agent to a chelating washing stage in a bleaching plant to bond with metals released from pulp and form a chelate. Also provided is a method of reducing encrustations.
摘要翻译：提供了从漂白设备废液中除去金属并回收螯合剂的方法，该方法包括以下步骤：将包含螯合剂中螯合物的螯合物的废液加热到至少约140℃的温度至在螯合物中断开键并从螯合物中释放金属; 在包含绿液或白液中的至少一种的碱性物质中增加碳酸盐或硫化物中的至少一种的含量以形成碳酸盐或硫化物增强的碱性物质; 使加热的废液与碱性材料接触以形成含有沉淀金属的溶液，其中碱金属物质的添加量足以将大部分释放的金属从溶液中沉淀出来; 过滤溶液以将沉淀的金属与溶液分离，并形成含有回收螯合剂的滤液; 并将回收的螯合剂的至少一部分供应到漂白设备中的螯合洗涤阶段以与从纸浆释放的金属结合并形成螯合物。还提供了减少结壳的方法。

5. 发明授权

US5993601A Process for producing polysulphide by means of oxidizing sulphide in spent liquors from kraft cellulose cooking 失效
标题翻译：通过在硫酸盐纤维素蒸煮的废液中氧化硫化物生产多硫化物的方法
公开(公告)号：US5993601A
公开(公告)日：1999-11-30
申请号：US010504
申请日：1998-01-21
申请人： Olle Wennberg , Martin Wimby
发明人： Olle Wennberg , Martin Wimby
IPC分类号： D21C11/00 , D21C11/12
CPC分类号： D21C11/0064 , D21C11/0057 , D21C11/0085
摘要： The invention relates to a process for producing polysulphide by means of oxidizing sulphide in spent liquors from kraft cellulose cooking. The process is characterized in that green liquor is firstly enriched in sulphide and then oxidized.
摘要翻译：本发明涉及一种通过在硫酸盐纤维素蒸煮的废液中氧化硫化物生产多硫化物的方法。该方法的特征在于，绿液首先富含硫化物然后被氧化。

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