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    • 41. 发明授权
    • Process for synthesizing urea
    • 尿素合成方法
    • US4504679A
    • 1985-03-12
    • US430557
    • 1982-09-30
    • Shigeru InoueHiroshi OnoAkito FukuiHidetsugu FujiiHaruyuki MorikawaSuguru Watanabe
    • Shigeru InoueHiroshi OnoAkito FukuiHidetsugu FujiiHaruyuki MorikawaSuguru Watanabe
    • C07C67/00C07C239/00C07C273/04C07C126/02
    • C07C273/04
    • Disclosed herein is a process of synthesizing urea including reacting ammonia and carbon dioxide at a urea synthesis pressure and temperature in a urea synthesis zone, separating excess ammonia and unreacted ammonium carbamate from the thus-obtained urea synthesis melt as a gaseous mixture containing ammonia and carbon dioxide, recirculating the gaseous mixture to the urea synthesis zone, and, on the other hand, obtaining urea from an aqueous urea solution which has been obtained by separating the excess ammonia and unreacted ammonium carbamate. The above process features ingeniously combined conditions of various process steps. It produces urea using less high-pressure steam and recovers less low-pressure steam. A stripping operation making use of carbon dioxide can be effectively incorporated in the above process. The above process permits to cut the construction cost of a urea synthesis plant.
    • 本文公开了一种合成尿素的方法,其包括在尿素合成区中的尿素合成压力和温度下使氨和二氧化碳反应,将由此得到的尿素合成熔体中的过量氨和未反应的氨基甲酸铵与含有氨和碳的气体混合物分离 二氧化物,将气体混合物再循环到尿素合成区,另一方面,从通过分离过量的氨和未反应的氨基甲酸铵获得的尿素水溶液获得尿素。 上述过程巧妙地结合了各种工艺步骤的组合条件。 它使用更少的高压蒸汽产生尿素,并回收较少的低压蒸汽。 在上述过程中可以有效地并入使用二氧化碳的剥离操作。 上述过程允许减少尿素合成设备的建造成本。
    • 42. 发明授权
    • Process for synthesizing urea
    • 尿素合成方法
    • US4354040A
    • 1982-10-12
    • US298302
    • 1981-09-01
    • Shigeru InoueHiroshi OnoHidetsugu Fujii
    • Shigeru InoueHiroshi OnoHidetsugu Fujii
    • C07C67/00C07C239/00C07C273/04C07C120/02
    • C07C273/04
    • In a synthesis of urea using ammonia in a highly excessive molar ratio, unreacted materials are decomposed and separated by subjecting the urea synthesis effluent to a stripping step using carbon dioxide at a pressure equal to the urea synthesis pressure. The thus-separated gaseous mixture of ammonia and carbon dioxide is condensed through an indirect heat exchange with an effluent stream discharged from the stripping step and lowered to a predetermined pressure level. Resulting condensation heat is used for the decomposition and separation of unreacted materials still remaining in said effluent stream. By choosing suitable operation conditions for each step of the present invention, it is possible to reduce the amount of high pressure steam to be required and to minimize the amount of low pressure steam to be recovered.
    • 在使用高度过量摩尔比的氨的尿素合成中,通过在等于尿素合成压力的压力下,使用二氧化碳将尿素合成流出物进行汽提步骤,使未反应的物质分解和分离。 这样分离的氨和二氧化碳的气体混合物通过与从汽提步骤排出的流出物流的间接热交换而冷凝,并降低到预定的压力水平。 所得的冷凝热用于分解和分离仍残留在所述流出物流中的未反应物质。 通过为本发明的每个步骤选择合适的操作条件,可以减少所需的高压蒸汽的量并使要回收的低压蒸汽的量最小化。
    • 50. 发明申请
    • Vehicular control object determination system and vehicular travel locus estimation system
    • 车辆控制对象确定系统和车辆行驶轨迹估计系统
    • US20060149462A1
    • 2006-07-06
    • US11229364
    • 2005-09-16
    • Kiichiro SawamotoShigeru InoueHiroshi Sato
    • Kiichiro SawamotoShigeru InoueHiroshi Sato
    • G06F17/00
    • B60W40/02B60W10/06B60W30/16B60W2550/20G08G1/16
    • In a vehicular control object determination system, locus correlation degree calculator calculates a degree of correlation between a future travel locus of a vehicle estimated by first travel locus estimator based on a vehicle speed and a yaw rate and a future travel locus of the vehicle estimated by second travel locus estimator based on a past travel locus of the vehicle calculated by travel locus calculator. When control object determiner determines a control object based on the travel locus estimated by the first travel locus estimator and predetermined control object determination conditions, the control object determination conditions are modified according to the degree of correlation, that is, the degree of reliability of the travel locus estimated by the first travel locus estimator, thereby achieving both accuracy with which the control object is determined and determination of the control object at a distance.
    • 在车辆控制对象确定系统中,轨迹相关度计算器基于车速和横摆率来计算由第一行驶轨迹估计器估计出的车辆的未来行驶轨迹与由 基于由行驶轨迹计算器计算的车辆的过去行驶轨迹的第二行驶轨迹估计器。 当控制对象确定器基于由第一行进轨迹估计器估计的行驶轨迹和预定控制对象确定条件来确定控制对象时,根据相关程度,即相关度的可靠度来修改控制对象确定条件 由第一行进轨迹估计器估计的行驶轨迹,从而获得确定控制对象的精度和距离上的控制对象的确定。