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公开(公告)号：US5753075A
公开(公告)日：1998-05-19
申请号：US738239
申请日：1996-10-25
IPC分类号： B60W40/076 , D21C1/10 , D21C7/06
摘要： A system and method for feeding comminuted cellulosic fibrous material such as wood chips to the top of a treatment vessel such as a continuous digester provide enhanced simplicity, operability, and maintainability by eliminating the high pressure transfer device conventionally used in the prior art. Instead of a high pressure transfer device the steamed and slurried chips are pressurized using one or more slurry pumps located at least thirty feet below the top of the treatment vessel and for pressurizing the slurry to a pressure of at least about 10 bar gauge. A return line from the top of the digester may, but need not necessarily, be operatively connected to the one or more pumps and if connected to the pumps the pressure in the return line may be reduced utilizing a pressure reduction valve and/or a flash tank. Steam from the flash tank may be used in steaming the chips. Pressure relief prevention may be provided by isolation valves in the lines leading to and from the top of the treatment vessel controlled by a controller which is responsive to the pressure sensed in the slurry line leading to the top of the treatment vessel.
摘要翻译： 将诸如木屑的粉碎的纤维素纤维材料进料到诸如连续蒸煮器的处理容器的顶部的系统和方法通过消除现有技术中常规使用的高压转移装置提供了增强的简单性，可操作性和可维护性。 代替高压转移装置，使用位于处理容器顶部至少三十英尺处的一个或多个浆料泵来加压蒸汽和浆化的碎屑，并将浆料加压至至少约10巴的压力。 来自蒸煮器顶部的返回管线可以但不一定可操作地连接到一个或多个泵，并且如果连接到泵，则可以使用减压阀和/或闪光灯来减少返回管路中的压力 坦克。 来自闪蒸罐的蒸汽可用于蒸制芯片。 通过控制器控制的通向和离开处理容器顶部的管线可以通过隔离阀来提供防泄压，该控制器响应于通向处理容器顶部的浆液管线中感测到的压力。
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公开(公告)号：US6106668A
公开(公告)日：2000-08-22
申请号：US63429
申请日：1998-04-21
摘要： A system and method for feeding comminuted cellulosic fibrous material such as wood chips to the top of a treatment vessel such as a continuous digester provide enhanced simplicity, operability, and maintainability by eliminating the high pressure transfer device conventionally used in the prior art. Instead of a high pressure transfer device the steamed and slurried chips are pressurized using one or more slurry pumps located at least thirty feet below the top of the treatment vessel and for pressurizing the slurry to a pressure of at least about 10 bar gauge. A return line from the top of the digester may, but need not necessarily, be operatively connected to the one or more pumps and if connected to the pumps the pressure in the return line may be reduced utilizing a pressure reduction valve and/or a flash tank. During pressurized transferring of the slurry from the pumps to a treatment vessel (which may be as little about 10 feet or as much as about a half a mile away) treatment liquid is provided which contains at least some active pumping chemical including sodium hydroxide, sodium sulfide; polysulfide, anthraquinone or their equivalents or derivatives; surfactants, enzymes, or chelants; or combinations thereof. Pseudo-countercurrent circulation of treatment liquids may be provided between stations.
摘要翻译： 将诸如木屑的粉碎的纤维素纤维材料进料到诸如连续蒸煮器的处理容器的顶部的系统和方法通过消除现有技术中常规使用的高压转移装置提供了增强的简单性，可操作性和可维护性。 代替高压转移装置，使用位于处理容器顶部至少三十英尺处的一个或多个浆料泵来加压蒸汽和浆化的碎屑，并将浆料加压至至少约10巴的压力。 来自蒸煮器顶部的返回管线可以但不一定可操作地连接到一个或多个泵，并且如果连接到泵，则可以使用减压阀和/或闪光灯来减少返回管路中的压力 坦克。 在将浆料从泵加压转移到处理容器（其可以在约10英尺或高达约半英里远的地方）的情况下，提供处理液体，其包含至少一些主动泵送化学品，包括氢氧化钠，钠 硫化物 多硫化物，蒽醌或其等同物或衍生物; 表面活性剂，酶或螯合剂; 或其组合。 可在站间提供处理液的伪逆流循环。
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公开(公告)号：US5795438A
公开(公告)日：1998-08-18
申请号：US744857
申请日：1996-11-04
IPC分类号： D21C7/06
CPC分类号： D21C7/06
摘要： A number of distinct parallel digesters are fed with chips from a common steaming vessel. After steaming the chips are slurried and pressurized, and substantially simultaneously the steamed, slurried, and pressurized chips are transferred to at least some of (and typically each of) the distinct parallel digesters. A material stream is split into a number of individually controllable material streams (one for each of the digesters) either at the discharge from the steaming vessel, after slurrying (or at the discharge from a slurrying vessel), or after pressurizing (e.g. in a high pressure transfer device). For example a multi-branch conduit may be connected to the slurry outlet from the high pressure transfer device, the conduit having a branch directly connected to each of the digesters. A distinct return conduit may also be provided from each of the digesters to the high pressure transfer device, each return conduit preferably has a distinct flow control device and/or pump which are individually controlled.
摘要翻译： 许多独特的平行蒸煮器由普通的蒸汽容器供给碎屑。 在蒸汽之后，碎片被浆化和加压，并且基本上同时将蒸出的，浆化的和加压的碎屑转移到不同的平行蒸煮器的至少一些（并且典型地每个）。 物料流在从蒸汽容器排出之后，在浆料化（或从浆浆容器排出）之后或在加压之后（例如在一个或多个蒸发器中）分离成多个可单独控制的材料流（每个消化器一个） 高压输送装置）。 例如，多分支导管可以连接到来自高压输送装置的浆料出口，导管具有直接连接到每个消化器的分支。 也可以从每个消化器到高压输送装置提供独特的返回导管，每个返回管道优选地具有单独控制的不同的流量控制装置和/或泵。
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公开(公告)号：US06277240B1
公开(公告)日：2001-08-21
申请号：US09165991
申请日：1998-10-02
IPC分类号： D21C712
摘要： In the production of chemical pulp, such as kraft pulp, it is possible to reduce the amount of ancillary equipment, and/or the size of the continuous digester vessel, while achieving enhanced uniformity of treatment by avoiding “hang ups”. Instead of providing vertical counter-current flow of liquid and comminuted cellulosic fibrous material being treated in the lower half of the digester, the counter-current flow may be a cross flow, that is substantially horizontal (e.g. radial) while the flow of the chip column is vertical. Regardless of the configuration of the digester vessel, a single pump may be utilized for all of the recirculations, or only a few pumps for all of the recirculations.
摘要翻译： 在生产化学纸浆如牛皮纸浆时，可以通过避免“挂起”来实现增强的处理均匀性，减少辅助设备的数量和/或连续蒸煮器的尺寸。 代替在蒸煮器的下半部分提供正在处理的液体和粉碎的纤维素纤维材料的垂直逆向流动，逆流可以是横流，其基本上水平（例如径向），而芯片的流动 列是垂直的。 不管蒸煮器容器的结构如何，单个泵可以用于所有的再循环，或仅用于所有循环的几个泵。
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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。
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公开(公告)号：US5958181A
公开(公告)日：1999-09-28
申请号：US911366
申请日：1997-08-07
摘要： A method of treating wood chips allows chemical pulp (e. g. kraft pulp) to be produced having enhanced fiber strength properties. In a first zone or stage the chips are cool impregnated (e. g. a temperature of about 60-120.degree. C.) with a first alkali-containing liquid (25-35 g/l expressed as NaOH). In the top of a continuous digester in a second zone or stage the chips are then treated with a second alkali-containing liquid having an alkali concentration at least 5 g/l less than the first liquid (e. g. 10-20 g/l) and a temperature of between about 120-160.degree. C. (e. g. 130-150.degree. C.). An extraction typically takes place to effect the change in treatment zones. After the second zone the chips are cooked at about 140-180.degree. C. (e. g. 150-170.degree. C.), and higher than in the second zone.
摘要翻译： 处理木屑的方法允许生产具有增强的纤维强度性质的化学纸浆（例如牛皮纸浆）。 在第一区域或阶段中，将芯片用第一含碱液体（25-35g / l，以NaOH表示）进行冷浸渍（例如约60-120℃的温度）。 在第二区域或阶段中的连续消化器的顶部，然后用比第一液体（例如10-20g / l）小至少5g / l的碱浓度的第二碱性液体处理切片，和 温度在约120-160℃之间（例如130-150℃）。 通常会进行提取以实现治疗区域的改变。 在第二区之后，将芯片在约140-180℃（例如150-170℃）下煮熟，并高于第二区。
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公开(公告)号：US5985096A
公开(公告)日：1999-11-16
申请号：US936047
申请日：1997-09-23
申请人： Bruno S. Marcoccia , J. Robert Prough , Jerry R. Johanson , C. Bertil Stromberg , Joseph R. Phillips
发明人： Bruno S. Marcoccia , J. Robert Prough , Jerry R. Johanson , C. Bertil Stromberg , Joseph R. Phillips
IPC分类号： D21C7/00
CPC分类号： D21C7/00
摘要： In a vertical digester for producing chemical pulp, or other vessel for treating a slurry of comminuted fibrous cellulosic material, the cost of manufacturing the shell is significantly reduced by eliminating the external step increases in the digester shell. The digester shell has a substantially constant internal diameter from just below the inlet to just above the outlet, screen assemblies being provided by an internal transition (e.g. conical) having an angle of convergence of less than 40.degree. (e.g. about 10-25.degree.) above each screen assembly so that the slurry flows through the transition without bridging or hang-up, and a step increase, or other increase, in diameter back to the first diameter after the screen assembly.
摘要翻译： 在用于生产化学纸浆的立式蒸煮器或用于处理粉碎的纤维状纤维素材料的浆料的其它容器中，通过消除蒸煮器壳体的外部步骤增加，制造壳体的成本显着降低。 蒸煮器壳体具有从入口正下方到出口正上方的基本上恒定的内径，筛网组件由倾斜角小于40°（例如约10-25°）的内部过渡（例如圆锥形）提供， 在每个筛网组件之上，使得浆料流过过渡而不会桥接或挂起，并且在筛网组装之后，直径逐渐增加或者增加到第一直径。
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公开(公告)号：US5401361A
公开(公告)日：1995-03-28
申请号：US963492
申请日：1992-10-20
CPC分类号： D21C3/24 , D21C11/0021 , D21C7/00
摘要： A conventional continuous digester is modified so as to provide a countercurrent cook throughout the entire height of the digester. Instead of connecting an upper mid-point extraction screen to a flash tank, that screen is closed off and extraction is provided at the top of the digester, utilizing an in-line drainer to remove some of the liquor and feed it to a flash tank. The liquor not removed recirculates through a pressure screen to an impregnation vessel, and then back to the digester. A cooling circulation is provided just below the top extraction. Valves are provided in the liquor discharged from the drainer and a conduit from the upper mid-point extraction which may be manipulated to return the digester to conventional operation, including the addition of white liquor to the bottom recirculation.
摘要翻译： 常规的连续蒸煮器被修改为在蒸煮器的整个高度上提供逆流烹饪。 代替将上部中点提取屏幕连接到闪光罐，该屏幕被关闭并且在蒸煮器的顶部提供提取，利用在线排水器去除一些液体并将其送入闪蒸罐 。 未除去的液体通过压力筛网再循环到浸渍容器中，然后返回到蒸煮器。 在顶部提取物的正下方提供冷却循环。 在从排水器排出的液体中提供阀和来自上中点萃取的管道，其可以被操作以将蒸煮器返回到常规操作，包括向底部再循环中加入白液。
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9.发明授权Heat economy enhancements for the recovery and use of energy obtained from spent cooking liquors 失效热回收利用从经过蒸煮的液体获得的能量的热效率增强公开(公告)号：US06176971B1
公开(公告)日：2001-01-23
申请号：US09195444
申请日：1998-11-18
IPC分类号： D21C1100
摘要： Useable steam, e.g. substantially clean useable steam, is produced from a chemical cellulose pulping system hot spent treatment liquor (e.g. black liquor) with optimum energy efficiency by passing the spent liquor to a reboiler, and then pressurizing (e.g. with an eductor, fan, or compressor) the clean steam discharged from the reboiler. The clean steam can be used to steam incoming chips (e.g. in a chip bin) without significantly increasing the TRS load on the pulp mill NCG system.
摘要翻译： 可用的蒸汽，例如 基本上可清洁的可用蒸汽，通过将废液通过再沸器，然后加压（例如用喷射器，风扇或压缩机）从具有最佳能量效率的化学纤维素制浆系统热废水处理液（例如黑液）生产， 从再沸器排出的清洁蒸汽。 清洁的蒸汽可用于蒸汽进入的碎片（例如在切屑仓中），而不会显着增加纸浆机NCG系统上的TRS负荷。
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10.发明授权Method for converting a digester for use as a gas phase and hydraulic phase continuous digester 有权用于转化用作气相和液相连续蒸煮器的蒸煮器的方法公开(公告)号：US07658818B2
公开(公告)日：2010-02-09
申请号：US11687835
申请日：2007-03-19
IPC分类号： D21C1/10
摘要： A method for converting a vapor phase continuous digester to a hydraulic digester including the steps of: operating the vapor phase digester in a vapor phase mode wherein a chip slurry enters the vessel of the digester through a lower chip inlet port, moves up through a top separator, discharges from an upper chip discharge chute of the separator to an upper vapor region of the vessel and falls to a liquor filled region of the vessel; ceasing the flow of the chip slurry to the separator; establishing a chip slurry flow path to an upper portion of top separator, and filling the vessel with liquor and chips such that the chip discharge chute is immersed in liquor.
摘要翻译： 一种用于将气相连续蒸煮器转换成液压消化器的方法，包括以下步骤：以气相模式操作气相蒸煮器，其中芯片浆料通过下芯片入口进入蒸煮器的容器，向上移动通过顶部 分离器，从分离器的上部切屑排出槽排出到容器的上部蒸气区域，并且下降到容器的液体填充区域; 停止碎屑流向分离器的流动; 建立到顶部分离器上部的芯片浆料流动路径，并用液体和碎屑填充容器，使得排屑槽浸入液体中。
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