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1. 发明授权

US06346167B2 Dissolved solids control in pulp production 失效
标题翻译：在纸浆生产中溶解固体控制
公开(公告)号：US06346167B2
公开(公告)日：2002-02-12
申请号：US09764297
申请日：2001-01-19
申请人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
发明人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
IPC分类号： D21C714
CPC分类号： D21C3/02 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/0021 , D21C11/04 , D21G7/00
摘要： Kraft pulp of increased strength and bleachability may be produced with decreased consumption of effective alkali, and at a lower H factor, by keeping the dissolved organic material (DOM) concentration low substantially through the entire kraft cook, including by extracting high DOM liquid from at least one part of a continuous digester and replacing it with much lower level DOM liquid. Existing pulp mills having two-vessel hydraulic, one-vessel hydraulic, or other systems may be retrofit to provide for extractions and additions of low DOM dilution liquor (including substantially DOM-free white liquor). Also, commercial size batch digesters (8 tons per day of pulp or more) can be operated with low DOM liquor to produce increased strength pulp. Using dilution with low DOM liquor also results in reduced H factor and effective alkali consumption, and increased bleachability.
摘要翻译：通过将溶解的有机物质（DOM）浓度基本上保持在整个硫酸盐蒸煮中，包括通过从中提取高DOM液体，可以降低有效碱的消耗，并且在较低的H因子下生产具有增加的强度和漂白性的牛皮纸浆连续消化器的至少一部分，并用更低级别的DOM液体代替。可以改造具有双容器液压，单容器液压或其它系统的现有纸浆厂，以提供低DOM稀释液（包括基本上不含DOM的白液）的提取和添加。此外，商业尺寸的批量蒸煮器（每天8吨纸浆或更多）可以用低DOM液体操作以产生增强的纸浆。使用低DOM酒稀释还可以降低H因子和有效的碱消耗，并增加漂白性。

2. 发明授权

US06280568B1 Dissolved organic material control in a cellulose pulp continuous digester 有权
标题翻译：在纤维素纸浆连续蒸煮器中溶解有机物控制
公开(公告)号：US06280568B1
公开(公告)日：2001-08-28
申请号：US09637858
申请日：2000-08-15
申请人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
发明人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
IPC分类号： D21C714
CPC分类号： D21C3/02 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/0021 , D21C11/04 , D21G7/00
摘要： Kraft pulp of increased strength and bleachability may be produced with decreased consumption of effective alkali, and at a lower H factor, by keeping the dissolved organic material (DOM) concentration low substantially through the entire kraft cook, including by extracting high DOM liquid from at least one part of a continuous digester and replacing it with much lower level DOM liquid. Existing pulp mills having two-vessel hydraulic, one-vessel hydraulic, or other systems may be retrofit to provide for extractions and additions of low DOM dilution liquor (including substantially DOM-free white liquor). Also, commercial size batch digesters (8 tons per day of pulp or more) can be operated with low DOM liquor to produce increased strength pulp. Using dilution with low DOM liquor also results in reduced H factor and effective alkali consumption, and increased bleachability.
摘要翻译：通过将溶解的有机物质（DOM）浓度基本上保持在整个硫酸盐蒸煮中，包括通过从中提取高DOM液体，可以降低有效碱的消耗，并在较低的H因子下生产具有增加的强度和漂白性的牛皮纸浆连续消化器的至少一部分，并用更低级别的DOM液体代替。可以改造具有双容器液压，单容器液压或其它系统的现有纸浆厂，以提供低DOM稀释液（包括基本上不含DOM的白液）的提取和添加。此外，商业尺寸的批量蒸煮器（每天8吨纸浆或更多）可以用低DOM液体操作以产生增强的纸浆。使用低DOM酒稀释还可以降低H因子和有效的碱消耗，并增加漂白性。

3. 发明授权

US5849151A Continuous digester having means for implementing low dissolved solids profiling 失效
标题翻译：连续蒸煮器具有实现低溶解固体成分分析的方法
公开(公告)号：US5849151A
公开(公告)日：1998-12-15
申请号：US863908
申请日：1997-05-27
申请人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , R. Fred Chasse
发明人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , R. Fred Chasse
IPC分类号： C08B1/00 , C08B15/00 , D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/02 , D21C11/04 , D21G7/00
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04 , D21C3/022 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21G7/00
摘要： Digester systems for producing paper pulp from comminuted cellulosic fibrous material take into account the level of dissolved organic materials (DOM), such as lignin, hemi-cellulose, and cellulose, maintaining the DOM level at about 100 g/l throughout the cook (particularly kraft cook). In order to make sure there is sufficient liquid to slurry the material in the feed system of a two vessel system, some liquid is withdrawn from the circulation conduits between the digester and impregnation vessel, cooled, and fed to the feed system. In a vapor phase digester, the level of liquid at the top of the digester is more precisely controlled by circulating some of the withdrawn liquid from a circulatory loop of the digester to the level tank associated with the feed system. An in-line drainer may be provided in the feed system between a make-up liquor pump and a liquid inlet conduit leading to the top of an impregnation vessel. Within the digester, a set of extraction/dilution screens is provided specifically positioned and spaced from each other, and with respect to a reintroduction conduit opening, so that mixing of different DOM concentration liquids is minimized.
摘要翻译：用于从粉碎的纤维素纤维材料生产纸浆的消化器系统考虑了溶解的有机物质（DOM）的水平，例如木质素，半纤维素和纤维素，在整个烹饪中保持DOM水平为约100g / l（特别是牛皮纸厨师）。为了确保在两个容器系统的进料系统中存在足够的液体以使浆料淤浆，一些液体从蒸煮器和浸渍容器之间的循环管道中取出，冷却并进料到进料系统中。在气相消化器中，通过将一些取出的液体从蒸煮器的循环回路循环到与进料系统相关联的液位罐中，可以更精确地控制蒸煮器顶部的液体水平。可以在进料系统中在补充液体泵和通向浸渍容器顶部的液体入口导管之间提供在线排水器。在蒸煮器内，提供了一组提取/稀释筛网，其特别地定位和间隔开，并且相对于再引入管道开口，使得不同的DOM浓缩液体的混合最小化。

4. 发明授权

US5575890A Method for selectively increasing the sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of wood 失效
标题翻译：在硫酸盐蒸煮木材中选择性提高硫酸盐蒸煮液硫化物离子浓度和硫化度的方法
公开(公告)号：US5575890A
公开(公告)日：1996-11-19
申请号：US291918
申请日：1994-08-18
申请人： J. Robert Prough , Bruno S. Marcoccia , Richard O. Laakso , Carl L. Luhrmann
发明人： J. Robert Prough , Bruno S. Marcoccia , Richard O. Laakso , Carl L. Luhrmann
IPC分类号： D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/08 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/04 , D21G7/00 , D21C3/26
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04 , D21C3/022 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21G7/00
摘要： The sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of cellulose pulp is selectively increased. After treatment in a first treatment zone in which impregnation or kraft cooking takes place using a kraft cooking liquor having a first sulfide ion concentration and sulfidity, black liquor is extracted from the material, liquid is withdrawn from the material and dilution liquid is added to the withdrawn liquid and the withdrawn liquid with dilution liquid is reintroduced. In a second treatment zone after the first zone a second kraft cooking liquor is introduced having a second sulfide ion concentration and sulfidity greater than the first sulfide ion concentration and sulfidity (typically by about 20-50%), including by manipulating controlling the flow rate of extraction and the flow rates of withdrawal of liquid and addition of dilution liquid. The pressure of the continuous digester is controlled in a unique manner that avoids disruptions to the column of pulp continuously moving downwardly in the digester, anywhere in the digester, but particularly avoids non-uniform, unstable material in the countercurrent washing zone. The pressure is controlled by withdrawing liquid from, and introducing liquor into, the digester at at least one additional extraction-dilution loop aside from the main extraction of the digester and the wash dilution liquid introduction mechanism below the wash screens. Pressure can also be maintained (e.g. at about 130-170 psi) by also controlling the amount of wash dilution liquor, and by varying the extraction flow.
摘要翻译：纤维素纸浆硫酸盐蒸煮时硫酸盐蒸煮液的硫化物离子浓度和硫化物有选择地增加。在使用具有第一硫化物离子浓度和硫化物的硫酸盐蒸煮液进行浸渍或硫酸盐蒸煮的第一处理区域中处理之后，从该材料中提取黑液，从该物质中取出液体并将稀释液加入到取出的液体和用稀释液体排出的液体被重新引入。在第一区域之后的第二处理区域中，引入第二硫酸盐蒸煮液，其具有大于第一硫化物离子浓度和硫化物浓度的硫化物的第二硫离子浓度和硫化物（通常为约20-50％），包括通过控制流速的提取液和液体的提取流量以及稀释液的添加量。以独特的方式控制连续蒸煮器的压力，避免在蒸煮器中的任何地方在蒸煮器中连续向下移动的纸浆柱的中断，但是特别地避免了逆流洗涤区域中不均匀的不稳定的材料。除了从洗涤屏幕下面的蒸煮器和洗涤稀释液引入机构的主要提取之外，在至少一个额外的提取 - 稀释回路中，从蒸煮器中抽出液体并将其引入到蒸煮器中来控制压力。还可以通过控制洗涤稀释液的量以及通过改变提取流量来保持压力（例如约130-170psi）。

5. 发明授权

US6159337A Dissolved organic materials control in cellulose pulp production 有权
标题翻译：溶解有机材料控制纤维素纸浆生产
公开(公告)号：US6159337A
公开(公告)日：2000-12-12
申请号：US414887
申请日：1999-10-08
申请人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
发明人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
IPC分类号： C08B1/00 , C08B15/00 , D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/02 , D21C11/04 , D21G7/00
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21G7/00
摘要： Kraft pulp of increased strength and bleachability may be produced with decreased consumption of effective alkali, and at a lower H factor, by keeping the dissolved organic material (DOM) concentration low substantially through the entire kraft cook, including by extracting high DOM liquid from at least one part of a continuous digester and replacing it wit much lower level DOM liquid. Existing pulp mills having two-vessel hydraulic, one-vessel hydraulic, or other systems may be retrofit to provide for extractions and additions of low DOM dilution liquor (including substantially DOM-free white liquor). Also, commercial size batch digesters (8 tons per day of pulp or more) can be operated with low DOM liquor to produce increased strength pulp. Using dilution with low DOM liquor also results in reduced H factor and effective alkali consumption, and increased bleachability.
摘要翻译：通过将溶解的有机物质（DOM）浓度基本上保持在整个硫酸盐蒸煮中，包括通过从中提取高DOM液体，可以降低有效碱的消耗，并且在较低的H因子下生产具有增加的强度和漂白性的牛皮纸浆连续消化器的至少一部分，并用较低级别的DOM液体代替。可以改造具有双容器液压，单容器液压或其它系统的现有纸浆厂，以提供低DOM稀释液（包括基本上不含DOM的白液）的提取和添加。此外，商业尺寸的批量蒸煮器（每天8吨纸浆或更多）可以用低DOM液体操作以产生增强的纸浆。使用低DOM酒稀释还可以降低H因子和有效的碱消耗，并增加漂白性。

6. 发明授权

US5824188A Method of controlling the pressure of a continuous digester using an extraction-dilution 失效
标题翻译：使用萃取 - 稀释法控制连续蒸煮器的压力的方法
公开(公告)号：US5824188A
公开(公告)日：1998-10-20
申请号：US712977
申请日：1996-09-12
申请人： J. Robert Prough , Bruno S. Marcoccia , Richard O. Laakso , Carl L. Luhrmann
发明人： J. Robert Prough , Bruno S. Marcoccia , Richard O. Laakso , Carl L. Luhrmann
IPC分类号： D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/04
CPC分类号： D21C3/224 , D21C11/0021 , D21C11/04 , D21C3/02 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02
摘要： The sulfide ion concentration and sulfidity of kraft cooking liquor during kraft cooking of cellulose pulp is selectively increased. After treatment in a first treatment zone in which impregnation or kraft cooking takes place using a kraft cooking liquor having a first sulfide ion concentration and sulfidity, black liquor is extracted from the material, liquid is withdrawn from the material and dilution liquid is added to the withdrawn liquid and the withdrawn liquid with dilution liquid is reintroduced. In a second treatment zone after the first zone a second kraft cooking liquor is introduced having a second sulfide ion concentration and sulfidity greater than the first sulfide ion concentration and sulfidity (typically by about 20-50%), including by manipulating controlling the flow rate of extraction and the flow rates of withdrawal of liquid and addition of dilution liquid. The pressure of the continuous digester is controlled in a unique manner that avoids disruptions to the column of pulp continuously moving downwardly in the digester, anywhere in the digester, but particularly avoids non-uniform, unstable material in the countercurrent washing zone. The pressure is controlled by withdrawing liquid from, and introducing liquor into, the digester at at least one additional extraction-dilution loop aside from the main extraction of the digester and the wash dilution liquid introduction mechanism below the wash screens. Pressure can also be maintained (e.g. at about 130-170 psi) by also controlling the amount of wash dilution liquor, and by varying the extraction flow.
摘要翻译：纤维素纸浆硫酸盐蒸煮时硫酸盐蒸煮液的硫化物离子浓度和硫化物有选择地增加。在使用具有第一硫化物离子浓度和硫化物的硫酸盐蒸煮液进行浸渍或硫酸盐蒸煮的第一处理区域中处理之后，从该材料中提取黑液，从该物质中取出液体并将稀释液加入到取出的液体和用稀释液体排出的液体被重新引入。在第一区域之后的第二处理区域中，引入第二硫酸盐蒸煮液，其具有大于第一硫化物离子浓度和硫化物浓度的硫化物的第二硫离子浓度和硫化物（通常为约20-50％），包括通过控制流速的提取液和液体的提取流量以及稀释液的添加量。以独特的方式控制连续蒸煮器的压力，避免在蒸煮器中的任何地方在蒸煮器中连续向下移动的纸浆柱的中断，但是特别地避免了逆流洗涤区域中不均匀的不稳定的材料。除了从洗涤屏幕下面的蒸煮器和洗涤稀释液引入机构的主要提取之外，在至少一个额外的提取 - 稀释回路中，从蒸煮器中抽出液体并将其引入到蒸煮器中来控制压力。还可以通过控制洗涤稀释液的量以及通过改变提取流量来保持压力（例如约130-170psi）。

7. 发明授权

US5489363A Pulping with low dissolved solids for improved pulp strength 失效
标题翻译：用低溶解固体制浆以提高纸浆强度
公开(公告)号：US5489363A
公开(公告)日：1996-02-06
申请号：US56211
申请日：1993-05-04
申请人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
发明人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
IPC分类号： C08B1/00 , C08B15/00 , D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/02 , D21C11/04 , D21G7/00
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21G7/00
摘要： Kraft pulp of increased strength (e.g. at least about 15% greater tear strength at a specified tensile for fully refined pulp, and as much as about 27%) is produced by keeping the dissolved organic material (DOM) concentration below about 100 g/l (e.g.
摘要翻译：通过将溶解的有机物质（DOM）浓度保持在约100g / l以下，生产强度增加的牛皮纸浆（例如，对于完全精制纸浆，在特定拉伸下的撕裂强度至少约15％，高达约27％）（例如，<50g / l）。这可以通过提取含有足够量的DOM的液体来完成，该液体足够大以不利地影响纸浆强度，并且用含有比所提取的液体更低的有效DOM水平的液体代替部分或全部提取液体，以便积极地影响纸浆强度。替代液可以是水，白液，加压热处理黑液，洗涤滤液，冷吹滤液或组合，或者可以处理提取的液体以除去或钝化DOM（例如通过沉淀，超滤或吸收）。提供的提取和稀释在牛皮纸烹饪过程中的许多不同阶段进行，例如在连续蒸煮器中以三个或更多个不同的水平，或者通过连续流动低浓度的DOM浓缩液通过分批蒸煮器。

8. 发明授权

US6132556A Method of controlling pulp digester pressure via liquor extraction 有权
标题翻译：通过酒精提取来控制纸浆蒸煮器压力的方法
公开(公告)号：US6132556A
公开(公告)日：2000-10-17
申请号：US192210
申请日：1998-09-04
申请人： C. Bertil Stromberg , J Robert Prough , Bruno S. Marcoccia , Richard O. Laakso , Carl L. Luhrmann
发明人： C. Bertil Stromberg , J Robert Prough , Bruno S. Marcoccia , Richard O. Laakso , Carl L. Luhrmann
IPC分类号： D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/04
CPC分类号： D21C9/02 , D21C11/0021 , D21C11/04 , D21C3/02 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14
摘要： A method of controlling the pressure of a vertical continuous comminuted cellulosic fibrous material (wood chip) digester is provided using a pressure-control extraction in a zone relatively insensitive to changes in the flow rate of liquid introduction or removal. The method comprises controlling the pressure in the digester primarily (or substantially exclusively) by varying the flow rate of liquor extracted from the pressure-control extraction to maintain the pressure in the digester at a desired superatmospheric level while avoiding non-uniform, unstable material movement in the counter-current washing zone; and introducing dilution liquid into the digester at the at least one recirculation-dilution loop. The pressure-control extraction is preferably substantially the upper extraction in the digester. Substantially except during excessive over pressure and under pressure conditions the extraction flow from the main extraction is maintained substantially constant. Substantially only during excessive over pressure and under pressure conditions pressure control may also be practiced by controlling the rate of dilution into the at least one recirculation-dilution loop, and the extraction from the main extraction.
摘要翻译：在对液体引入或除去流速的变化相对不敏感的区域中使用压力控制提取来提供控制垂直连续粉碎的纤维素纤维材料（木屑）蒸煮器的压力的方法。该方法包括通过改变从压力控制提取物提取的液体的流速来控制蒸煮器中的压力（或基本上仅仅），以将蒸煮器中的压力保持在期望的超大气压水平，同时避免不均匀的不稳定的材料运动在逆流洗涤区; 以及在所述至少一个再循环稀释循环中将稀释液引入所述消化器。压力控制提取优选基本上是蒸煮器中的上部萃取。基本上除了在过度过压和压力条件下，主提取物的萃取流量基本保持不变。基本上仅在过度的过压和压力条件下，压力控制也可以通过控制稀释到至少一个再循环稀释回路中的速率以及从主提取物的萃取来实施。

9. 发明授权

US5849150A Low dissolved solids control in pulp production 失效
标题翻译：纸浆生产中低溶解固体控制
公开(公告)号：US5849150A
公开(公告)日：1998-12-15
申请号：US775197
申请日：1996-12-30
申请人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
发明人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , Joseph R. Phillips , Rolf C. Ryham , Jan T. Richardsen , R. Fred Chasse
IPC分类号： C08B1/00 , C08B15/00 , D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/02 , D21C11/04 , D21G7/00
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21G7/00
摘要： Kraft pulp of increased strength and bleachability may be produced with decreased consumption of effective alkali, and at a lower H factor, by keeping the dissolved organic material (DOM) concentration low substantially through the entire kraft cook, including by extracting high DOM liquid from at least one part of a continuous digester and replacing it with much lower level DOM liquid. Existing pulp mills having two-vessel hydraulic, one-vessel hydraulic, or other systems may be retrofit to provide for extractions and additions of low DOM dilution liquor (including substantially DOM-free white liquor). Also, commercial size batch digesters (8 tons per day of pulp or more) can be operated with low DOM liquor to produce increased strength pulp. Using dilution with low DOM liquor also results in reduced H factor and effective alkali consumption, and increased bleachability.
摘要翻译：通过将溶解的有机物质（DOM）浓度基本上保持在整个硫酸盐蒸煮中，包括通过从中提取高DOM液体，可以降低有效碱的消耗，并且在较低的H因子下生产具有增加的强度和漂白性的牛皮纸浆连续消化器的至少一部分，并用更低级别的DOM液体代替。可以改造具有双容器液压，单容器液压或其它系统的现有纸浆厂，以提供低DOM稀释液（包括基本上不含DOM的白液）的提取和添加。此外，商业尺寸的批量蒸煮器（每天8吨纸浆或更多）可以用低DOM液体操作以产生增强的纸浆。使用低DOM酒稀释还可以降低H因子和有效的碱消耗，并增加漂白性。

10. 发明授权

US5662775A Continuous digester with dissolved solids handling 失效
标题翻译：连续消化器，溶解固体处理
公开(公告)号：US5662775A
公开(公告)日：1997-09-02
申请号：US484315
申请日：1995-06-07
申请人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , R. Fred Chasse
发明人： Bruno S. Marcoccia , J. Robert Prough , Richard O. Laakso , R. Fred Chasse
IPC分类号： C08B1/00 , C08B15/00 , D21C3/02 , D21C3/22 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21C11/00 , D21C11/02 , D21C11/04 , D21G7/00
CPC分类号： D21C3/02 , D21C11/0021 , D21C11/04 , D21C3/022 , D21C3/22 , D21C3/224 , D21C3/24 , D21C7/00 , D21C7/12 , D21C7/14 , D21C9/02 , D21G7/00
摘要： Digester systems for producing paper pulp from comminuted cellulosic fibrous material take into account the level of dissolved organic materials (DOM), such as lignin, hemi-cellulose, and cellulose, maintaining the DOM level at about 100 g/l throughout the cook (particularly kraft cook). In order to make sure there is sufficient liquid to slurry the material in the feed system of a two vessel system, some liquid is withdrawn from the circulation conduits between the digester and impregnation vessel, cooled, and fed to the feed system. In a vapor phase digester, the level of liquid at the top of the digester is more precisely controlled by circulating some of the withdrawn liquid from a circulatory loop of the digester to the level tank associated with the feed system. An in-line drainer may be provided in the feed system between a make-up liquor pump and a liquid inlet conduit leading to the top of an impregnation vessel. Within the digester, a set of extraction/dilution screens is provided specifically positioned and spaced from each other, and with respect to a reintroduction conduit opening, so that mixing of different DOM concentration liquids is minimized.
摘要翻译：用于从粉碎的纤维素纤维材料生产纸浆的消化器系统考虑了溶解的有机物质（DOM）的水平，例如木质素，半纤维素和纤维素，在整个烹饪中保持DOM水平为约100g / l（特别是牛皮纸厨师）。为了确保在两个容器系统的进料系统中存在足够的液体以使浆料淤浆，一些液体从蒸煮器和浸渍容器之间的循环管道中取出，冷却并进料到进料系统中。在气相消化器中，通过将一些取出的液体从蒸煮器的循环回路循环到与进料系统相关联的液位罐中，可以更精确地控制蒸煮器顶部的液体水平。可以在进料系统中在补充液体泵和通向浸渍容器顶部的液体入口导管之间提供在线排水器。在蒸煮器内，提供了一组提取/稀释筛网，其特别地定位和间隔开，并且相对于再引入管道开口，使得不同的DOM浓缩液体的混合最小化。

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