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公开(公告)号：US5169498A
公开(公告)日：1992-12-08
申请号：US753995
申请日：1991-09-03
IPC分类号： D21B1/02 , D21C1/02 , F16K17/194
CPC分类号： D21B1/021 , D21C1/02 , F16K17/194
摘要： The proper pressure conditions are maintained within an atmospheric pre-steaming chips bin used in the production of paper pulp. Extending upwardly from the top of the chips bin is a vertical section of conduit, an elbow section, and a horizontal section. A door guide with a door opening in it is disposed in the horizontal section and precludes passage of gas through the horizontal section except through the door opening. A pivot pin mounts a door at its top so that it normally assumes a vertical orientation closing off the opening, and it is adjustably biased into that orientation by a counterweight mechanism. The counterweight includes weight discs which mount on a vertical section of rod having external screw threads, and a horizontal section of rod is connected by a flange to a flange of the pivot pin. The door remains closed unless the pressure differential between the chips bin and the surrounding environment is greater than about 2 psig, in which case gas may flow from the environment to the chips bin, or vice versa, to bring the pressure differential within the desired range.
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公开(公告)号：US5567279A
公开(公告)日：1996-10-22
申请号：US801651
申请日：1991-12-02
申请人： Joseph R. Phillips , John D. Weston , Victor L. Bilodeau , Ronald G. Bain , Mark D. Barrett , Brian F. Greenwood , John Pietrangelo
发明人： Joseph R. Phillips , John D. Weston , Victor L. Bilodeau , Ronald G. Bain , Mark D. Barrett , Brian F. Greenwood , John Pietrangelo
摘要： Located within the annular screen of the pressure diffuser is a tubular baffle hung from adjacent the top of the vessel. The baffle has two headers disposed on its inner surface, with openings in the tube providing communication between the exterior of the tube and the headers. A conduit extends from each header to an arm at the top of the vessel, to allow extracted liquid to be discharged. Another extraction conduit is provided at the bottom of the vessel, in communication with the screen interior and the tubular baffle interior. Treatment liquid, such as wash liquid, may be introduced at two, three, or more positions along the vessel with the liquid extracted from the first and second headers being introduceable at different positions along the vessel. A flexible, elastomeric material, sealing element with integral annular skirt may extend from the bottom end of the tubular baffle and engage the screen to provide a seal minimizing mixing between stages.
摘要翻译： 位于压力扩散器的环形屏幕内的是与容器顶部相邻的管状挡板。 挡板具有设置在其内表面上的两个集管，管中的开口提供管的外部和集管之间的连通。 导管从容器的顶部从每个头部延伸到臂，以允许抽出的液体排出。 在容器的底部提供另一个提取管道，与屏幕内部和管状挡板内部连通。 诸如洗涤液体的处理液体可以沿着容器引入两个，三个或更多个位置，从第一和第二集管提取的液体可以沿着容器在不同位置被引入。 具有整体环形裙部的柔性弹性体材料密封元件可以从管状挡板的底端延伸并接合屏幕以提供最小化阶段之间的混合的密封。
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公开(公告)号：US5302247A
公开(公告)日：1994-04-12
申请号：US970403
申请日：1992-11-02
CPC分类号： D21C7/14
摘要： In the production of cellulose pulp (e.g. kraft pulp) utilizing a continuous digester having a number of different feed points for cooking (e.g. white) liquor and utilizing a high pressure feeder, the volume of cool white liquor that is applied to the feed system is reduced compared to conventional processing. This can cause excessive hammering, and damage the high pressure feeder and adjacent piping and equipment. In order to avoid this, liquid being recirculated from the top of the digester back to the high pressure feeder is cooled by passing it into a heat exchanger into heat exchange relationship with a cooler liquid, with the flow of coolant automatically controlled by sensing the temperature of the recirculated liquid. The temperature in the feed system can further be lowered by cooling the cooking liquor before it is added to the pulp slurry, as by passing it to a flash tank so that its temperature is reduced at least 10.degree. C., and the flashed steam can be used in an evaporator.
摘要翻译： 在使用具有多个不同进料点的连续蒸煮器（例如白色）并利用高压进料器的纤维素纸浆（例如牛皮纸浆）的生产中，施加到进料系统的冷白液体积为 与传统加工相比有所减少。 这可能会导致过度的锤击，并损坏高压给料机和相邻的管道和设备。 为了避免这种情况，从蒸煮器顶部再循环回到高压给料器的液体通过将其通入热交换器而与较冷的液体进行热交换关系来冷却，冷却剂流通过感测温度自动控制 的再循环液体。 进料系统中的温度可以通过将蒸煮液加入到纸浆中进行冷却来进一步降低，如通过将蒸煮液送入闪蒸罐中使其温度降低至少10摄氏度，闪蒸的蒸汽可以 用于蒸发器。
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公开(公告)号：US5617975A
公开(公告)日：1997-04-08
申请号：US507980
申请日：1995-07-27
CPC分类号： D21C7/06
摘要： A chip bin construction, ideally suited for bins having a maximum diameter of twelve feet or more, uniformly discharges chips, after steaming, without the necessity of a vibratory discharge. A hollow transition portion is provided between a hollow substantially right circular cylindrical main body and a rectangular discharge. The hollow transition may have a substantially circular cross-section open top and a substantially rectangular cross-section open bottom and opposite non-vertical gradually tapering side walls. At least one feed screw may be mounted at the open bottom of the transition for cooperation with the discharge, and the feed screw(s)--or the equivalent--may provide for metering of the chips. Alternatively, the hollow transition portion may provide one dimensional convergence and side relief, and no screw feeders need be provided, in which case a conventional chip meter is used.
摘要翻译： 理想地适用于最大直径为12英尺或更大的料仓的切屑仓结构在蒸汽之后均匀地排出碎屑，而不需要振动排放。 中空的过渡部分设置在中空的大致直立的圆柱形主体和矩形排出口之间。 中空过渡可以具有基本圆形的横截面开口顶部和基本上矩形的横截面敞开的底部和相对的非垂直逐渐逐渐变细的侧壁。 至少一个进料螺杆可以安装在过渡部的开口底部以与排放管协作，并且进给螺杆 - 或等效的 - 可以提供芯片的计量。 或者，中空过渡部分可以提供一维会聚和侧面释放，并且不需要设置螺旋给料器，在这种情况下，使用常规的芯片计量器。
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公开(公告)号：US06436233B1
公开(公告)日：2002-08-20
申请号：US09573046
申请日：2000-05-18
IPC分类号： D21C110
摘要： A feed system for a cellulose pulp treating vessel (such as a continuous digester) is not limited by the required L/W ratio of the pump feeding a wood chip slurry to a high pressure transfer device, the feed system may be kept at a low temperature to minimize flashing of liquid into steam, and a return conduit from the treatment vessel to the transfer device high pressure inlet may be eliminated. Some of the liquid is removed from the slurry just before the low pressure inlet to the transfer device, and/or just after the high pressure outlet, to reduce the L/W ratio of the slurry by at least 0.25, e.g. from 3.0:1 to 2.25:1 just before the low pressure inlet, and from 7.0:1 to 5.0:1 substantially immediately after the high pressure outlet.
摘要翻译： 用于纤维素纸浆处理容器（例如连续蒸煮器）的进料系统不受供应木屑浆料与高压转移装置的泵的所需L / W比的限制，进料系统可以保持在低 温度以最小化液体进入蒸汽的闪烁，并且可以消除从处理容器到转印装置高压入口的返回管道。 一些液体刚刚在转移装置的低压入口之前和/或刚刚在高压出口之后从浆料中除去，以将浆料的L / W比降低至少0.25，例如。 在低压入口之前的3.0:1至2.25:1，并且在高压出口之后基本上立即从7.0:1至5.0:1。
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公开(公告)号：US06451172B1
公开(公告)日：2002-09-17
申请号：US09573390
申请日：2000-05-18
IPC分类号： D21C700
CPC分类号： D21C7/06
摘要： A drainer for a feed system for a cellulose digester has a substantially open and hollow inlet (devoid of a spiral flow imparter or a like flow restriction) and a substantially annular screen within an elongated housing having a flow direction between the housing inlet and outlet. The screen is slotted and the slots are at an angle &agr; between 5-90° with respect to the flow direction, so as to minimize passage of cellulose material through the slots, or clogging of the slots.
摘要翻译： 用于纤维素消化器的进料系统的排水器具有基本上敞开和中空的入口（没有螺旋流动力矩或类似流动限制），以及细长壳体内的基本上环形的筛网，其具有在壳体入口和出口之间的流动方向。 屏幕是开槽的，并且槽相对于流动方向处于5-90°之间的角度α，以便最小化纤维素材料通过狭槽的通道或狭槽的堵塞。
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公开(公告)号：US5338366A
公开(公告)日：1994-08-16
申请号：US997711
申请日：1993-01-04
申请人： Todd S. Grace , Mark D. Barrett , Vic L. Bilodeau , Gary L. McCarty , Brian F. Greenwood , J. Robert Prough , Louis O. Torregrossa
发明人： Todd S. Grace , Mark D. Barrett , Vic L. Bilodeau , Gary L. McCarty , Brian F. Greenwood , J. Robert Prough , Louis O. Torregrossa
摘要： Biomass, such as bagasse, is pre-hydrolyzed, to ultimately effect hydrolysis of hemicellulose to sugars. Biomass is mixed with a mineral acid solution to form a slurry having a consistency of about 8 to 12% so that the acid solution properly wets the biomass. Then the slurry is dewatered to about 35 to 50% consistency, and is heated to reaction temperature (e. g. about 320.degree. F.) by direct contact with steam in the vapor phase of a vertical pressurized reactor, having a pressure of about 40 psig. A fluffer is preferably provided in the top of the reaction vessel. After a reaction time of about 30 minutes, the biomass is diluted and cold blown out of the bottom of the reactor. Pressate from the dewatering has acid added to it and is heated by indirect heat exchange with a sugar solution obtained by washing of the biomass discharged from the reactor, and is then mixed with the biomass as the acid solution.
摘要翻译： 生物质如甘蔗渣被预水解，以最终将半纤维素水解成糖。 将生物质与无机酸溶液混合以形成具有约8至12％浓度的浆料，使得酸溶液适当地润湿生物质。 然后将浆料脱水至约35％至50％的稠度，并通过与垂直加压反应器的气相中的蒸汽直接接触将其加热至反应温度（例如约320°F），压力为约40psig。 优选在反应容器的顶部设置起绒毛。 在约30分钟的反应时间后，将生物质稀释并冷却从反应器的底部吹出。 从脱水中加入酸加入，并通过与通过洗涤从反应器排出的生物质洗涤得到的糖溶液进行间接热交换加热，然后与作为酸溶液的生物质混合。
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公开(公告)号：US06447645B1
公开(公告)日：2002-09-10
申请号：US09953263
申请日：2001-09-17
IPC分类号： D21C700
摘要： A feed system for a cellulose pulp treating vessel (such as a continuous digester) is not limited by the required L/W ratio of the pump feeding a wood chip slurry to a high pressure transfer device, the feed system may be kept at a low temperature to minimize flashing of liquid into steam, and a return conduit from the treatment vessel to the transfer device high pressure inlet may be eliminated. Some of the liquid is removed from the slurry just before the low pressure inlet to the transfer device, and/or just after the high pressure outlet, to reduce the L/W ratio of the slurry by at least 0.25, e.g. from 3.0:1 to 2.25:1 just before the low pressure inlet, and from, 7.0:1 to 5.0:1 substantially immediately after the high pressure outlet.
摘要翻译： 用于纤维素纸浆处理容器（例如连续蒸煮器）的进料系统不受供应木屑浆料与高压转移装置的泵的所需L / W比的限制，进料系统可以保持在低 温度以最小化液体进入蒸汽的闪烁，并且可以消除从处理容器到转印装置高压入口的返回管道。 一些液体刚刚在转移装置的低压入口之前和/或刚刚在高压出口之后从浆料中除去，以将浆料的L / W比降低至少0.25，例如。 在低压入口之前为3.0:1至2.25:1，并且在高压出口之后基本上为7.0:1至5.0:1。
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公开(公告)号：US4638855A
公开(公告)日：1987-01-27
申请号：US637574
申请日：1984-08-03
申请人： Carl L. Elmore , Ted M. Poulin , Mark D. Barrett
发明人： Carl L. Elmore , Ted M. Poulin , Mark D. Barrett
CPC分类号： F01K9/003 , F28B3/02 , Y10S165/092
摘要： An assembly and method provide for the simultaneous heating of process inlet water from a clean water source, and condensing of a condensable gas using the process inlet water and a closed loop of condensing water. A plurality of pairs of condenser plates are disposed in an annular array in a vertical cylindrical vessel. First and second liquid inlets are disposed at the top of the vessel separated by a radially extending fixed baffle, and first and second liquid outlets are disposed at the bottom of the vessel separated by a radially extending fixed baffle. A condensable gas passes through the interiors of the pairs of condensing plates. Movable top and bottom baffles are rotatable through arcs to change the number of condensing plates operatively communicating the first liquid inlet with respect to the second liquid inlet, the liquid flowing between the first liquid inlet and outlet being always segregated from the liquid flowing between the second liquid inlet and outlet. The first inlet is connected up to a source of clean water, such as a river, and the movement of the baffles is adjusted in response to the temperature of the water in the river. The second liquid inlet and outlet may be operatively connected to a cooling tower, while the first liquid outlet may be connected to a paper pulp washing station.
摘要翻译： 组装和方法提供了从干净的水源同时加热工艺入口水，并使用过程入口水和冷凝水的闭环冷凝可冷凝气体。 多对电容器板以垂直圆柱形容器中的环形阵列设置。 第一和第二液体入口设置在由径向延伸的固定挡板隔开的容器的顶部，并且第一和第二液体出口设置在由径向延伸的固定挡板分隔的容器的底部。 可冷凝气体通过冷凝板对的内部。 可移动的顶部和底部挡板可旋转通过弧形以改变冷凝板的数量，该冷凝板将第一液体入口相对于第二液体入口可操作地连通，在第一液体入口和出口之间流动的液体总是与在第二液体入口和出口之间流动的液体分离 液体入口和出口。 第一个入口连接到诸如河流的清洁水源，并且响应于河中的水的温度调节挡板的运动。 第二液体入口和出口可以可操作地连接到冷却塔，而第一液体出口可连接到纸浆清洗站。
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公开(公告)号：US4519446A
公开(公告)日：1985-05-28
申请号：US480752
申请日：1983-03-31
申请人： Carl L. Elmore , Ted M. Poulin , Mark D. Barrett
发明人： Carl L. Elmore , Ted M. Poulin , Mark D. Barrett
CPC分类号： F01K9/003 , F28B3/02 , Y10S165/092 , Y10S165/90
摘要： An assembly and method provide for the simultaneous heating of process inlet water from a clean water source, and condensing of a condensable gas using the process inlet water and a closed loop of condensing water. A plurality of pairs of condenser plates are disposed in an annular array in a vertical cylindrical vessel. First and second liquid inlets are disposed at the top of the vessel separated by a radially extending fixed baffle, and first and second liquid outlets are disposed at the bottom of the vessel separated by a radially extending fixed baffle. A condensable gas passes through the interiors of the pairs of condensing plates. Movable top and bottom baffles are rotatable through arcs to change the number of condensing plates operatively communicating the first liquid inlet with respect to the second liquid inlet, the liquid flowing between the first liquid inlet and outlet being always segregated from the liquid flowing between the second liquid inlet and outlet. The first inlet is connected up to a source of clean water, such as a river, and the movement of the baffles is adjusted in response to the temperature of the water in the river. The second liquid inlet and outlet may be operatively connected to a cooling tower, while the first liquid outlet may be connected to a paper pulp washing station.
摘要翻译： 组装和方法提供了从干净的水源同时加热工艺入口水，并使用过程入口水和冷凝水的闭环冷凝可冷凝气体。 多对电容器板以垂直圆柱形容器中的环形阵列设置。 第一和第二液体入口设置在由径向延伸的固定挡板隔开的容器的顶部，并且第一和第二液体出口设置在由径向延伸的固定挡板分隔的容器的底部。 可冷凝气体通过冷凝板对的内部。 可移动的顶部和底部挡板可旋转通过弧形以改变冷凝板的数量，该冷凝板将第一液体入口相对于第二液体入口可操作地连通，在第一液体入口和出口之间流动的液体总是与在第二液体入口和出口之间流动的液体分离 液体入口和出口。 第一个入口连接到诸如河流的清洁水源，并且响应于河中的水的温度调节挡板的运动。 第二液体入口和出口可以可操作地连接到冷却塔，而第一液体出口可连接到纸浆清洗站。
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