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    • 2. 发明授权
    • Process for controlling the temperature during urea synthesis
    • 在尿素合成过程中控制温度的方法
    • US4154760A
    • 1979-05-15
    • US763148
    • 1977-01-27
    • Eiji OtsukaShinji YoshimuraKazumichi KanaiShigeru Inoue
    • Eiji OtsukaShinji YoshimuraKazumichi KanaiShigeru Inoue
    • C07C273/04C07C126/02
    • C07C273/04
    • A urea synthesis process for converting ammonia and carbon dioxide to urea is improved by providing an easy means of maintaining the urea synthesis zone in the process at a constant temperature. In the process the starting CO.sub.2 and up to and including 100 percent of the starting NH.sub.3 are reacted in a heat-recovery zone maintained at a urea synthesis pressure. Some of the heat of reaction is removed. The molar ratio of NH.sub.3 to CO.sub.2 which is fed into the heat-recovery zone is less than 4. The reaction mixture and the rest of the starting NH.sub.3 are fed into a urea synthesis zone maintained at urea synthesis pressure to produce urea. The improvement involves adjusting the amount of starting ammonia which is fed into the urea synthesis zone in response to any change in the temperature in the urea synthesis zone so that the urea synthesis zone is maintained at a substantially fixed temperature.
    • 通过提供将过程中的尿素合成区保持在恒定温度的简单方法,可以改善将氨和二氧化碳转化为尿素的尿素合成方法。 在该过程中,起始CO 2和直到并包括100%的起始NH 3在保持在尿素合成压力的热回收区中反应。 一些反应热被去除。 进料到热回收区中的NH 3与CO 2的摩尔比小于4.将反应混合物和其余的起始NH 3进料到维持尿素合成压力的尿素合成区中以产生尿素。 改进之处在于响应于尿素合成区中温度的任何变化而调节进入尿素合成区的起始氨的量,使得尿素合成区保持在基本上固定的温度。
    • 3. 发明授权
    • Method of recovering unreacted ammonium carbamate in urea synthesis
    • 在尿素合成中回收未反应的氨基甲酸铵的方法
    • US3944605A
    • 1976-03-16
    • US437360
    • 1974-01-28
    • Shigeru InoueTetsuo Kimura
    • Shigeru InoueTetsuo Kimura
    • C07C67/00C07C239/00C07C273/04C07C126/00
    • C07C273/04Y02P20/142
    • Unreacted ammonium carbamate contained in urea synthesis effluent obtained by reacting ammonia and carbon dioxide at urea synthesis pressures and temperatures is recovered by a method comprising subjecting the urea synthesis effluent to a three-stage decomposition to decompose the unreacted ammonium carbamate in each stage, the first stage and the second stage of which are operated at a gauge pressure of at least 30 kg/cm.sup.2 and a gauge pressure of from 10 to 25 kg/cm.sup.2, respectively, absorbing the off-gas resulting from the second stage decomposition in an absorbent to form an aqueous solution of ammonium carbamate and unabsorbed gaseous ammonia, condensing the gaseous ammonia to form recovered liquid ammonia, and absorbing substantially all of the off-gas resulting from the first stage decomposition in the aqueous solution of ammonium carbamate to form recovered ammonium carbamate solution while removing the heat of absorption by indirect heat exchange with the recovered liquid ammonia pressurized to the urea synthesis pressure.
    • 在尿素合成压力和温度下通过氨和二氧化碳反应而获得的尿素合成流出物中所含的未反应的氨基甲酸铵是通过一种方法回收的,该方法包括使尿素合成流出物进行三阶段分解以分解每个阶段中的未反应的氨基甲酸铵,第一 其阶段和第二阶段分别以至少30kg / cm 2的表压和10至25kg / cm2的表压力操作,吸收由吸收剂中的第二阶段分解产生的废气至 形成氨基甲酸铵水溶液和未吸收的气态氨,冷凝气态氨以形成回收的液氨,并吸收由氨基甲酸铵水溶液中的第一阶段分解产生的基本上所有的废气,形成回收的氨基甲酸铵溶液 同时通过与回收的液氨间接热交换来除去吸收热 加压至尿素合成压力。
    • 9. 发明授权
    • Vehicular control object determination system and vehicle control system
    • 车辆控制对象确定系统和车辆控制系统
    • US07289017B2
    • 2007-10-30
    • US11255904
    • 2005-10-20
    • Kiichiro SawamotoShigeru InoueHiroshi Sato
    • Kiichiro SawamotoShigeru InoueHiroshi Sato
    • B60Q1/00
    • B60W40/02B60W10/06B60W30/16B60W2550/20G08G1/166
    • In a vehicular control object determination system, the position of an object detected by a radar device is stored by a detection position memory, and a predetermined area having the position of the object as the center is set as the determination region by a determination region setter. When the determination region set for one of two objects is passed through by the other object, the passing direction is determined by a passing direction determiner. During this process, the direction in which a fixed object or an object dropped on the road moves relative to a preceding vehicle is a direction in which the fixed object or the dropped object on the road approaches the subject vehicle with the preceding vehicle as a reference. Then, a control object determiner excludes from determination of the control object an object for which the passing direction determined by the passing direction determiner is a direction approaching the subject vehicle, thereby preventing the fixed object or the dropped object from being erroneously determined as the control object when the preceding vehicle passes over the fixed object or the dropped object on the road.
    • 在车辆控制对象确定系统中,由检测位置存储器存储由雷达装置检测到的物体的位置,并且通过确定区域设定器将具有作为中心的物体的位置的预定区域设置为确定区域 。 当为两个物体中的一个设置的确定区域被另一个物体通过时,通过方向由通过方向确定器确定。 在此过程中,固定物体或物体落在路面上相对于前方车辆移动的方向是将前方车辆的固定物或物体靠近车辆的方向作为基准 。 然后,控制对象确定器从控制对象的确定中排除由通过方向确定器确定的通过方向是靠近对象车辆的方向的对象,从而防止固定对象或被丢弃的对象被错误地确定为控制对象 当前方车辆通过固定物体或道路上的落下物体时。