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121. 发明授权

US5849197A Regeneration of pulp liquors 失效
标题翻译：纸浆再生
公开(公告)号：US5849197A
公开(公告)日：1998-12-15
申请号：US612962
申请日：1996-08-05
申请人： Leslie James Taylor , David John Harris
发明人： Leslie James Taylor , David John Harris
IPC分类号： D21C5/02 , D21C11/00 , B01D61/00
CPC分类号： D21C11/0042 , D21C11/0021 , D21C5/02 , C02F2103/28 , Y02W30/648 , Y10S210/928
摘要： A paper mill and method of producing paper from waste paper in which no liquid effluent is produced, and wherein the spent treatment liquors are subjected to an oxidative treatment, microfiltration, and reverse osmosis.
摘要翻译： PCT No.PCT / AU95 / 00150 Sec。 371日期：1996年8月5日 102（e）日期1996年8月5日PCT 1995年3月17日PCT公布。公开号WO95 / 25197 日期1995年9月21日一种造纸厂和废纸生产纸的方法，其中废液处理液不经过氧化处理，微滤和反渗透。

122. 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liquor having a first sulfide ion concentration and sulfidity, black liquor is extracted from the material, liquid is withdrawn from the material and dilution liquid is added to the withdrawn liquid and the withdrawn liquid with dilution liquid is reintroduced.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）。

123. 发明授权

US5762758A Method of papermaking having zero liquid discharge 失效
标题翻译：造纸方法为零液体排放
公开(公告)号：US5762758A
公开(公告)日：1998-06-09
申请号：US654248
申请日：1996-05-28
申请人： Roger P. Hoffman
发明人： Roger P. Hoffman
IPC分类号： D21B1/32 , D21C5/02 , D21C9/02 , D21C11/00 , D21F1/66 , D21F1/70
CPC分类号： D21C5/02 , D21B1/32 , D21C11/0021 , D21C9/02 , D21F1/66 , Y02W30/646 , Y02W30/648
摘要： A method of papermaking having zero liquid discharge. A cellulosic pulp composed of recycled materials is initially cleaned to remove contaminants and foreign material, and the clean pulp is then washed to remove dissolved solids and pulping chemicals, and the washed pulp is then utilized in the papermaking process. The contaminants are separated from the liquid residue resulting from the pulp cleaning operation, preferably by floatation clarification, and the effluent from the clarification is evaporated to produce steam or water vapor along with an evaporated residue. The evaporated residue is combined with the suspended solids that were removed from the liquid residue and the combined residue is then subjected to a mechanical dewatering operation to reduce the water content so that the dewatered material can then be either landfilled or incinerated. The condensate from the evaporation can be combined with fresh makeup water and used in the papermaking process. Water recovered from the papermaking process is recycled to the pulp washing operation and water recovered from the pulp washing is recycled to the pulp cleaning and pulping operations, thus resulting in zero liquid discharge from the operation.
摘要翻译：一种具有零液体排放的造纸方法。首先清洁由回收材料组成的纤维素纸浆以除去污染物和异物，然后清洁干净的纸浆以除去溶解的固体和制浆化学品，然后将洗涤过的纸浆用于造纸过程。污染物与纸浆清洁操作中产生的液体残留物分离，优选通过浮选澄清分离，并且来自澄清的流出物被蒸发以产生蒸汽或水蒸汽以及蒸发的残余物。将蒸发的残余物与从液体残余物中除去的悬浮固体组合，然后对合并的残余物进行机械脱水操作以减少水分含量，以便然后将脱水的材料进行填埋或焚化。来自蒸发的冷凝物可以与新鲜的补充水结合，并用于造纸过程。从造纸工艺回收的水被循环到纸浆洗涤操作中，从纸浆清洗回收的水被循环到纸浆清洁和制浆操作中，从而导致操作中的液体零排放。

124. 发明授权

US5549788A Minimal effluents discharge pulp mill with chemical recovery 失效
标题翻译：排放最小的废纸浆厂具有化学回收率
公开(公告)号：US5549788A
公开(公告)日：1996-08-27
申请号：US113642
申请日：1993-08-31
申请人： Tuomo S. Nykanen , Brian F. Greenwood , Johan Gullichsen , Erkki Kiiskila , Esko Mattelmaki , Joseph R. Phillips , Jan T. Richardsen , Rolf Ryham , Jarmo Soderman , Karl G. Wiklund
发明人： Tuomo S. Nykanen , Brian F. Greenwood , Johan Gullichsen , Erkki Kiiskila , Esko Mattelmaki , Joseph R. Phillips , Jan T. Richardsen , Rolf Ryham , Jarmo Soderman , Karl G. Wiklund
IPC分类号： C01B7/01 , C01D1/04 , C01D3/04 , C01D5/00 , C01D7/00 , D21C11/00 , D21C11/06 , D21C11/10 , D21C11/12
CPC分类号： C01B7/01 , C01D1/04 , C01D3/04 , C01D5/00 , C01D7/00 , D21C11/0007 , D21C11/0021 , D21C11/0028 , D21C11/066 , D21C11/10 , D21C11/12 , Y10S162/08
摘要： Effluents are minimized from a cellulose pulp mill having a recovery boiler by concentrating liquid effluents from the bleach plant and/or liquid spills from process streams, incinerating the concentrated effluents in the recovery boiler, removing particles present in the flue gases from the recovery boiler to produce an ash including salts containing potassium and chloride, and sulfur compounds, and removing the potassium and chloride from the ash while returning the sulfur containing compounds to the recovery loop, so as to balance the sulfur, chloride and potassium levels in the mill. The sulfur is typically returned directly to a stream of black liquor just before entry into the recovery boiler. Green liquor is produced from the melt, which preferably is treated to remove metals from it prior to caustization (e.g. by sedimentation and/or filtration), and prior to green liquor crystallization to produce sodium hydroxide.
摘要翻译：通过从漂白设备中浓缩液体流出物和/或来自工艺物流的液体溢出，焚化回收锅炉中的浓缩废水，将来自回收锅炉的烟道气中存在的颗粒除去，从具有回收锅炉的纤维素纸浆厂中将废水最小化产生包含含有氯化钾和氯化物的盐的灰分和硫化合物，并将灰分中的钾和氯从灰分中除去，同时将含硫化合物返回到回收回路中，以平衡磨机中的硫，氯和钾的含量。在进入回收锅炉之前，硫通常直接返回到黑液流中。从熔体中生产绿液，其优选在去除（例如通过沉淀和/或过滤）之前以及在绿液结晶以产生氢氧化钠之前经处理以从其中除去金属。

125. 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。

126. 发明授权

US5470481A Method and apparatus for recovering wash water from pulp and paper mill effluent 失效
标题翻译：从纸浆和造纸厂废水中回收洗涤水的方法和设备
公开(公告)号：US5470481A
公开(公告)日：1995-11-28
申请号：US135913
申请日：1993-10-13
申请人： Michael Modell , Edward G. Hauptmann , Stuart A. Gairns
发明人： Michael Modell , Edward G. Hauptmann , Stuart A. Gairns
IPC分类号： C02F1/44 , C02F11/08 , D21C9/02 , D21C11/00 , B01D61/00
CPC分类号： D21C11/0021 , C02F1/444 , C02F11/086 , D21C9/02 , C02F1/441 , C02F2103/28
摘要： A method and apparatus for recovering wash water from effluent generated by a pulp and paper mill. The method includes filtering at least a portion of the effluent to form a filtrate stream and an organic solids feed stream. The organic solids feed stream is exposed to a temperature and a pressure which are supercritical for water to cause a substantial portion of the organic component to oxidize and form a product stream that, when cooled, includes a gaseous component, an inorganic solids component, and a liquid wash water component. The wash water component is separated from the gaseous and inorganic solids components, thereby recovering wash water.
摘要翻译：一种用于从纸浆和造纸厂产生的流出物中回收洗涤水的方法和装置。该方法包括过滤至少一部分流出物以形成滤液流和有机固体进料流。有机固体进料流暴露于对水而言是超临界的温度和压力，以使大部分有机组分氧化并形成产物流，当冷却时，其包含气态组分，无机固体组分和液体洗涤水组分。洗涤水组分与气态和无机固体组分分离，从而回收洗涤水。

127. 发明授权

US5439555A Minimum adverse environmental pulp with feed to chlorate manufacture 失效
标题翻译：最低不利环境纸浆与氯酸盐生产的饲料
公开(公告)号：US5439555A
公开(公告)日：1995-08-08
申请号：US113644
申请日：1993-08-31
申请人： Hans G. Lindberg
发明人： Hans G. Lindberg
IPC分类号： C01B11/02 , C01B11/14 , D21C9/14 , D21C11/00
CPC分类号： C01B11/025 , C01B11/14 , D21C11/0007 , D21C11/0021 , D21C11/0028 , D21C9/14 , Y10S162/08
摘要： Liquid effluent from a pulp mill bleach plant having at least one chlorine chemical bleach stage is evaporated and then used in chlorate manufacture. The bleach plant effluent produced by evaporation may be stored and then transported to an off-site chlorate production location, and/or may be subjected to a sodium chloride removal process (such as evaporative crystallization) and only sodium chloride transported to the off-site location. Chlorates produced off site can be returned to the mill (with acid and caustic that are optionally produced) for chlorine dioxide manufacture on site. The chloride-depleted stream from sodium chloride removal may be burned in the mill recovery boiler.
摘要翻译：来自具有至少一个氯化学漂白阶段的纸浆漂白设备的液体流出物被蒸发，然后用于氯酸盐制造。通过蒸发产生的漂白工厂流出物可以储存，然后运送到离开的氯酸盐生产地点，和/或可以进行氯化钠去除过程（例如蒸发结晶），并且只将氯化钠输送到异地位置。现场生产的氯酸盐可以回收到现场生产二氧化氯的工厂（含有任选生产的酸和苛性碱）。氯化钠除去的氯化物贫化物流可能在磨机回收锅炉中燃烧。

128. 发明授权

US5374333A Method for minimizing pulp mill effluents 失效
标题翻译：减少纸浆厂废水的方法
公开(公告)号：US5374333A
公开(公告)日：1994-12-20
申请号：US922334
申请日：1992-07-30
申请人： Tuomo S. Nykanen , Brian F. Greenwood , Johan Gullichsen , Erkki Kiiskila , Esko Mattelmaki , Joseph R. Phillips , Jan Richardsen , Rolf Ryham , Jarmo Soderman , Karl G. Wiklund
发明人： Tuomo S. Nykanen , Brian F. Greenwood , Johan Gullichsen , Erkki Kiiskila , Esko Mattelmaki , Joseph R. Phillips , Jan Richardsen , Rolf Ryham , Jarmo Soderman , Karl G. Wiklund
IPC分类号： D21C9/10 , D21C11/00 , D21C11/12
CPC分类号： D21C11/0021 , Y10S162/08
摘要： Apparatus for a pulp and paper mill, and methods of acting on liquid effluents produced in the mill, which minimizes the discharge of polluting gaseous and liquid effluents to the environment. Liquid effluents from the bleach plant are concentrated (e.g. evaporated), incinerated (e.g. gasified), leached, crystallized (e.g. freeze crystallized) then washed, and then fed to the plant chemical recovery loop. White liquor produced from the recovery boiler melt is fully oxidized and used in place of caustic in the bleach plant. Essentially all sulfuric acid, sulfur dioxide, caustic, and chlorine dioxide necessary for the pulp mill is produced from mill liquid effluents and gas waste streams, on site at the pulp mill. Typical bleaching sequences that can be used are DE.sub.op D.sub.n D, or AZE.sub.o PZP.
摘要翻译：用于纸浆和造纸厂的设备，以及作用于在磨机中产生的液体流出物上的方法，其最大限度地减少污染的气态和液体流出物排放到环境中。来自漂白设备的液体流出物被浓缩（例如蒸发），焚化（例如气化），沥滤，结晶（例如冷冻结晶），然后洗涤，然后进料至植物化学回收循环。从回收锅炉熔体产生的白液被完全氧化并用于漂白设备中的苛性碱。纸浆厂所必需的硫酸，二氧化硫，苛性碱和二氧化氯基本上都是从磨浆液流出物和废气流中产生的。可以使用的典型漂白序列是DEopDnD或AZEoPZP。

129. 发明授权

US5346591A Apparatus for treatment of chips with heated black liquor 失效
标题翻译：用加热黑液处理碎片的装置
公开(公告)号：US5346591A
公开(公告)日：1994-09-13
申请号：US52756
申请日：1993-04-27
申请人： Kaj Henricson
发明人： Kaj Henricson
IPC分类号： D21C1/00 , D21C3/02 , D21C3/24 , D21C11/00 , D21C7/14
CPC分类号： D21C3/24 , D21C1/00 , D21C11/0021
摘要： An apparatus provide for the production of low kappa number (e.g. below 20) kraft paper pulp, and a low viscosity black liquor which is easily transported to a recovery or disposal stage. Comminuted cellulosic fibrous material is steamed, passed to a treatment vessel, land then introduced into the top of a continuous digester. Black liquor is withdrawn from the digester and heated about 20-40 degrees C above cooking temperature (e.g. about 170 degrees C), and then introduced into contact with the material in the treatment vessel. After the material is treated with the black liquor, it is withdrawn from the treatment vessel, and passed to the recovery or disposal stage. White liquor may be introduced into the treatment vessel after black liquor withdrawal, after passing in heat exchange relationship with liquid recirculated from an impregnation vessel to a high pressure feeder. Alkali may be added to the black liquor withdrawn from the digester, prior to heating, and after heating it may be passed to a reaction vessel.
摘要翻译：一种用于生产低卡伯值（例如低于20）的牛皮纸浆和低粘度黑液的装置，其易于运输至回收或处理阶段。蒸发的纤维素纤维材料被蒸制，通入处理容器，然后将土地引入连续蒸煮器的顶部。将黑液从蒸煮器中取出并在烹调温度（例如约170℃）下加热约20-40℃，然后与处理容器中的材料接触。用黑液处理材料后，将其从处理容器中取出，并送至回收或处理阶段。在黑液取出后，与从浸渍容器再循环到高压进料器的液体经过热交换关系后，白液可以被引入处理容器中。可以在加热之前将碱加入到从蒸煮器中取出的黑液中，并且在加热之后可以将其转移到反应容器中。

130. 发明授权

US5213662A Treatment of chips with high temperature black liquor to reduce black liquor viscosity 失效
标题翻译：用高温黑液处理烟雾以降低黑色液体粘度
公开(公告)号：US5213662A
公开(公告)日：1993-05-25
申请号：US744506
申请日：1991-08-14
申请人： Kaj Henricson
发明人： Kaj Henricson
IPC分类号： D21C1/00 , D21C3/02 , D21C3/24 , D21C11/00
CPC分类号： D21C3/24 , D21C1/00 , D21C11/0021
摘要： A method and apparatus provide for the production of low kappa number (e.g. below 20) kraft paper pulp, and a low viscosity black liquor which is easily transported to a recovery or disposal stage. Comminuted cellulosic fibrous material is steamed, passed to a treatment vessel, and then introduced into the top of a continuous digester. Black liquor is withdrawn from the digester and heated about 20-40 degrees C. above cooking temperature (e.g. about 170 degrees C.), and then introduced into contact with the material in the treatment vessel. After the material is treated with the black liquor, it is withdrawn from the treatment vessel, and passed to the recovery or disposal stage. White liquor may be introduced into the treatment vessel after black liquor withdrawal, after passing in heat exchange relationship with liquid recirculated from an impregnation vessel to a high pressure feeder. Alkali may be added to the black liquor withdrawn from the digester, prior to heating, and after heating it may be passed to a reaction vessel.
摘要翻译：一种制备低卡伯值（例如低于20）牛皮纸浆的方法和装置，以及容易运输至回收或处理阶段的低粘度黑液。蒸发的纤维素纤维材料被蒸去，通过处理容器，然后引入连续蒸煮器的顶部。将黑液从蒸煮器中取出并在烹调温度（例如约170℃）以上加热约20-40℃，然后与处理容器中的材料接触。用黑液处理材料后，将其从处理容器中取出，并送至回收或处理阶段。在黑液取出后，与从浸渍容器再循环到高压进料器的液体经过热交换关系后，白液可以被引入处理容器中。可以在加热之前将碱加入到从蒸煮器中取出的黑液中，并且在加热之后可以将其转移到反应容器中。

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