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    • 1. 发明授权
    • Method for feeding comminuted fibrous material
    • 喂粉碎纤维材料的方法
    • US6106668A
    • 2000-08-22
    • US63429
    • 1998-04-21
    • C. Bertil StrombergJ. W. ChambleeBruno S. MarcocciaRolf C. RyhamErwin D. Funk
    • C. Bertil StrombergJ. W. ChambleeBruno S. MarcocciaRolf C. RyhamErwin D. Funk
    • D21C1/10D21C7/06
    • D21C1/10D21C7/06
    • 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.
    • 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。
    • 2. 发明授权
    • Method and system for feeding comminuted fibrous material
    • 喂粉碎纤维材料的方法和系统
    • US5753075A
    • 1998-05-19
    • US738239
    • 1996-10-25
    • C. Bertil StrombergJ. Wayne ChambleeBruno S. MarcocciaRolf C. RyhamErwin D. Funk
    • C. Bertil StrombergJ. Wayne ChambleeBruno S. MarcocciaRolf C. RyhamErwin D. Funk
    • B60W40/076D21C1/10D21C7/06
    • D21C7/06D21C1/10
    • 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.
    • 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。