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    • 5. 发明授权
    • Reactor
    • 反应堆
    • US07815874B2
    • 2010-10-19
    • US12125339
    • 2008-05-22
    • Kenji SakaiYasuhiko Kojima
    • Kenji SakaiYasuhiko Kojima
    • F28D7/00
    • B01J19/02B01J19/0013B01J19/0053B01J19/2425B01J2219/00092B01J2219/00256B01J2219/0286F28D7/06F28F9/0219F28F9/0229F28F9/18F28F19/06F28F2275/20
    • A reactor including a reactor vessel and heat exchange tubes provided in the reactor vessel. The reactor vessel includes a tubesheet and is configured to receive a reaction fluid. The tubesheet has a first plate member configured to contact the reaction fluid and a second plate member configured to not contact the reaction fluid. Heat exchange tubes are provided in the reactor vessel and fixed to the first plate member. The heat exchange tubes are configured to receive a heat exchange medium. At least a portion of the first plate member configured to contact the reaction fluid is made of a metal that has a high corrosion-resistance against the reaction liquid, and the second plate member is made of a metal that has a low corrosion-resistance against the reaction liquid. The second plate member is detachably fixed to a remainder of the reactor vessel.
    • 包括反应器容器和设置在反应器容器中的热交换管的反应器。 反应器容器包括管板,并且构造成容纳反应流体。 管板具有构造成接触反应流体的第一板构件和构造成不接触反应流体的第二板构件。 热交换管设置在反应器容器中并固定到第一板构件。 热交换管被构造成接收热交换介质。 构成为接触反应流体的第一板状构件的至少一部分由对反应液体具有高耐腐蚀性的金属制成,第二板构件由耐腐蚀性低的金属制成 反应液体。 第二板构件可拆卸地固定到反应器容器的其余部分。
    • 8. 发明申请
    • Granulator and method of granulation using the same
    • 造粒机及造粒方法使用
    • US20090134536A1
    • 2009-05-28
    • US12290416
    • 2008-10-30
    • Yasuhiko KojimaTakahiro Yanagawa
    • Yasuhiko KojimaTakahiro Yanagawa
    • B29B9/00
    • B01J2/16B01J2/003B01J2/02B01J2/04Y10T428/12181Y10T428/2982Y10T428/2991
    • A granulator, having: a granulation unit having a bottom floor with a perforated plate as its bottom part; an upper air-supplying pipe for supplying a fluidizing air to the bottom floor of the granulation unit; a lower air-supplying pipe; air-spouting pipes, each of which is branched from the lower air-supplying pipe, and has an opening in the bottom floor of the perforated plate, for jetting the air into the granulation unit; and spray nozzles for spraying a granulation raw material liquid, which each are provided in the center of an air outlet of the air-spouting pipe, or a granulator, having: the bottom floor; the air-supplying pipe; and spray nozzles for spraying a granulation raw material liquid, which each are provided in an opening in the bottom floor of the perforated plate, and use a high-pressure atomizing air as an auxiliary gas, wherein, in each granulator, the spray nozzles are formed in triangular arrangement.
    • 造粒机,具有:造粒单元,具有底板,多孔板作为底部; 用于向造粒单元的底层供给流化空气的上部供气管; 下供气管; 排气管,其分别从下供气管分支,并且在多孔板的底板中具有用于将空气喷射到造粒单元中的开口; 以及喷射喷嘴,用于喷射造粒原料液体,每个制粒原料液体设置在排气管的出气口的中心,或造粒机,具有:底层; 供气管; 以及喷射喷嘴,用于喷射造粒原料液体,其分别设置在多孔板的底板的开口中,并且使用高压雾化空气作为辅助气体,其中,在每个造粒机中,喷嘴为 形成三角形排列。
    • 9. 发明授权
    • Method and apparatus for synthesizing urea
    • 尿素合成方法和装置
    • US07498464B2
    • 2009-03-03
    • US11421002
    • 2006-05-30
    • Yasuhiko Kojima
    • Yasuhiko Kojima
    • C07C273/04
    • C07C273/04B01J2219/00006
    • In a process and an apparatus for synthesizing urea which synthesize urea from ammonia and carbon dioxide, the operating condition can be grasped easily and with good accuracy. A process for synthesizing urea which includes: a reaction step of obtaining a urea synthesis solution which contains urea, unreacted ammonia, unreacted carbon dioxide and water by causing ammonia and carbon dioxide to react with each other; a stripping step of separating a gas mixture containing the unreacted ammonia and the unreacted carbon dioxide by stripping the urea synthesis solution by using at least a portion of raw material carbon dioxide; a condensing step of obtaining a condensed liquid by condensing the gas mixture in an absorbing medium while cooling the gas mixture; a recycling step of recycling the condensed liquid to the reaction step; and a step of measuring the density of the condensed liquid online. An apparatus for carrying out this process is provided.
    • 在从氨和二氧化碳合成尿素的合成尿素的方法和装置中,可以容易且准确地掌握操作条件。 一种合成尿素的方法,包括:通过使氨和二氧化碳相互反应获得含有尿素,未反应氨,未反应的二氧化碳和水的尿素合成溶液的反应步骤; 通过使用至少一部分原料二氧化碳汽提尿素合成溶液来分离含有未反应氨和未反应二氧化碳的气体混合物的汽提步骤; 冷凝步骤,通过在吸收介质中冷凝气体混合物同时冷却气体混合物来获得冷凝液体; 回收步骤,将冷凝的液体再循环到反应步骤; 以及在线测量浓缩液体的密度的步骤。 提供了一种用于执行该过程的装置。
    • 10. 发明申请
    • APPARATUS FOR SYNTHESIZING UREA
    • 用于合成尿素的装置
    • US20090036712A1
    • 2009-02-05
    • US11909744
    • 2006-04-24
    • Yasuhiko Kojima
    • Yasuhiko Kojima
    • C07C273/00B01J19/00
    • B01D3/343B01D5/003C07C273/04
    • It is intended to enable more smooth operation in an apparatus for synthesizing urea by circumventing the downward flow of a urea synthesis solution which is a gas-liquid two-phase flow and stabilizing the flow of the urea synthesis solution still remaining the gas-liquid two-phase flow and to reduce energy loss by giving smaller flow resistance. The present invention provides an apparatus for synthesizing urea including: a synthesis reactor for reacting NH3 with CO2 to obtain a urea synthesis solution containing urea, unreacted NH3, unreacted CO2, and water; a stripper for stripping the urea synthesis solution with use of at least a part of raw material CO2 to separate a gas mixture containing the unreacted NH3 and the unreacted CO2; a vertical submerged condenser having a shell and tube structure for condensing the gas mixture in an absorbing medium on the shell side while cooling the gas mixture with a cooling medium passing through the tube side; and recycling means for recycling a liquid obtained from this condenser to the synthesis reactor, wherein the synthesis reactor is a horizontal type, and wherein piping for sending the urea synthesis solution from the synthesis reactor to the stripper runs substantially horizontally and/or upward.
    • 旨在通过绕过作为气液两相流的尿素合成溶液的向下流动并使仍然保留气液二的尿素合成溶液的流动稳定化,在用于合成尿素的装置中更加平稳地操作 通过提供较小的流动阻力来减少能量损失。 本发明提供了一种用于合成尿素的装置,包括:用于使NH 3与CO 2反应的合成反应器,以获得含有尿素,未反应的NH 3,未反应的CO 2和水的尿素合成溶液; 汽提器,用于使用至少一部分原料CO 2来分离含有未反应的NH 3和未反应的CO 2的气体混合物的尿素合成溶液; 具有壳体和管结构的垂直浸没式冷凝器,用于在壳体侧的吸收介质中冷凝气体混合物,同时用通过管侧的冷却介质冷却气体混合物; 以及用于将从该冷凝器获得的液体再循环到合成反应器的再循环装置,其中合成反应器是水平型,并且其中用于将尿素合成溶液从合成反应器输送到汽提器的管道基本上水平和/或向上运行。