Synthesis of urea
    1.
    发明授权
    Synthesis of urea 失效
    尿素合成

    公开(公告)号:US4365089A

    公开(公告)日:1982-12-21

    申请号:US293926

    申请日:1981-08-18

    CPC分类号: C07C273/04

    摘要: The specification describes a process for synthesizing urea. The process comprises reacting ammonia and carbon dioxide in a molar ratio of 3:1-5:1 and at a pressure of 150-250 Kg/cm.sup.2 G, subjecting the resultant reaction mixture to a stripping step using gaseous carbon dioxide at a pressure substantially equal to the urea synthesis pressure and a temperature of 195.degree.-210.degree. C. to remove unreacted ammonia and unreacted carbon dioxide contained in the reaction mixture so that the content of unreacted ammonia is lowered to 10-15% by weight. This invention ensures a high conversion ratio from carbon dioxide to urea, considerably little formation of biuret during the stripping step, and reduced consumption of high pressure steam.

    摘要翻译: 该说明书描述了合成尿素的方法。 该方法包括使氨和二氧化碳以3:1-5:1的摩尔比和150-250Kg / cm2G的压力进行反应,将所得反应混合物进行汽提步骤,使用气态二氧化碳,压力基本相等 至尿素合成压力和195℃-210℃的温度以除去反应混合物中所含的未反应的氨和未反应的二氧化碳,使得未反应的氨的含量降低至10-15重量%。 本发明确保了从二氧化碳到尿素的高转化率,在汽提步骤期间几乎不少的缩二脲形成,并降低了高压蒸汽的消耗。

    Process for synthesizing urea
    2.
    发明授权
    Process for synthesizing urea 失效
    尿素合成方法

    公开(公告)号:US4504679A

    公开(公告)日:1985-03-12

    申请号:US430557

    申请日:1982-09-30

    CPC分类号: C07C273/04

    摘要: 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.

    摘要翻译: 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。

    Process for synthesizing urea
    3.
    发明授权
    Process for synthesizing urea 失效
    尿素合成方法

    公开(公告)号:US4354040A

    公开(公告)日:1982-10-12

    申请号:US298302

    申请日:1981-09-01

    CPC分类号: C07C273/04

    摘要: 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.

    摘要翻译: 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。

    Process for synthesizing urea
    4.
    发明授权
    Process for synthesizing urea 失效
    尿素合成方法

    公开(公告)号:US4311856A

    公开(公告)日:1982-01-19

    申请号:US221816

    申请日:1980-12-31

    IPC分类号: C07C273/04 C07C126/02

    CPC分类号: C07C273/04

    摘要: An inert gas containing carbon dioxide and ammonia and separated from a urea synthesis effluent under urea synthesis pressures is brought into contact with an absorbent along with unreacted carbon dioxide and ammonia separated in high pressure distillation at a pressure of from 10 to 25 kg/cm.sup.2 G to absorb substantially all of the carbon dioxide and the major portion of the ammonia, and is cooled to be separated from the resulting liquid ammonia and then is discharged. The inert gas can be treated with little or no danger of explosion by the above method.

    摘要翻译: 在尿素合成压力下将含有二氧化碳和氨并与尿素合成流出物分离的惰性气体与未反应的二氧化碳和氨在高压蒸馏中以10至25kg / cm2的压力分离而与吸收剂接触 以吸收基本上所有的二氧化碳和氨的主要部分,并且被冷却以与所得液氨分离,然后排出。 通过上述方法可以很少或没有爆炸危险来处理惰性气体。

    Process for preparing guanidine
    5.
    发明授权
    Process for preparing guanidine 失效
    制备胍的方法

    公开(公告)号:US4157348A

    公开(公告)日:1979-06-05

    申请号:US888613

    申请日:1978-03-21

    摘要: A process is described for preparing guanidine by separating guanidine from a process stream obtained in a urea synthesis process, wherein ammonia and carbon dioxide are reacted at a high temperature and a high pressure. The process stream includes a urea synthesis effluent from a urea synthesis zone, a solution obtained by separating unreacted materials from the effluent, a concentrate of the solution or a mother liquor derived from a urea crystallization zone.

    摘要翻译: 描述了通过从尿素合成过程中获得的工艺流中分离出胍来制备胍的方法,其中氨和二氧化碳在高温和高压下反应。 工艺流包括来自尿素合成区的脲合成流出物,通过从流出物中分离未反应物质,溶液浓缩物或衍生自脲结晶区的母液获得的溶液。

    Synthesis of urea
    6.
    发明授权
    Synthesis of urea 失效
    尿素合成

    公开(公告)号:US4301299A

    公开(公告)日:1981-11-17

    申请号:US203595

    申请日:1980-11-03

    CPC分类号: C07C273/04

    摘要: A process for synthesizing urea in which a urea synthesis effluent obtained by reacting carbon dioxide and ammonia at urea synthesis pressures and temperatures is subjected to stripping treatment with carbon dioxide under pressures substantially equal to urea synthesis pressures to separate the unreacted carbon dioxide and ammonia contained in the urea synthesis effluent as a gaseous mixture, and a sufficient amount of said gaseous mixture to maintain the urea synthesis temperatures at a predetermined level is recycled to the urea synthesis in the gaseous state, the balance being subjected to condensation to be recycled in the liquid state to the urea synthesis.

    摘要翻译: 一种合成尿素的方法,其中通过使二氧化碳和氨在尿素合成压力和温度下反应而获得的尿素合成流出物在基本上等于尿素合成压力的压力下用二氧化碳进行汽提处理,以将未反应的二氧化碳和氨 作为气态混合物的尿素合成流出物和足够量的所述气态混合物以将尿素合成温度保持在预定水平,在气态下再循环到尿素合成中,余量经过冷凝再循环到液体中 状态到尿素合成。

    Process for separating and recovering unreacted materials in urea
synthesis
    7.
    发明授权
    Process for separating and recovering unreacted materials in urea synthesis 失效
    在尿素合成中分离和回收未反应物质的方法

    公开(公告)号:US4081469A

    公开(公告)日:1978-03-28

    申请号:US718562

    申请日:1976-08-30

    CPC分类号: C07C273/04 Y02P20/142

    摘要: Carbon dioxide is reacted with a stoichiometric excess of ammonia at urea synthesis temperatures and pressures in a urea synthesis zone with the mol ratio of ammonia to carbon dioxide being in the range of from 5:1 to 12:1. The urea synthesis effluent from the urea synthesis zone is pressurized to a pressure higher than the urea synthesis pressure, and heated to a temperature higher than the urea synthesis temperature in a separation zone, wherein unreacted ammonium carbamate and excess ammonia contained in said urea synthesis effluent are separated from urea synthesis effluent in the form of a gaseous mixture of ammonia and carbon dioxide. The thus separated gaseous mixture of ammonia and carbon dioxide is recycled to said urea synthesis zone by means of the pressure difference.

    摘要翻译: 在尿素合成区的尿素合成温度和压力下,二氧化碳与化学计量过量的氨反应,氨与二氧化碳的摩尔比在5:1至12:1的范围内。 来自尿素合成区的尿素合成流出物被加压至高于尿素合成压力的压力,并加热到高于分离区中的尿素合成温度的温度,其中所述尿素合成流出物中含有未反应的氨基甲酸铵和过量氨 以氨和二氧化碳的气体混合物的形式与尿素合成流出物分离。 这样分离的氨和二氧化碳的气体混合物通过压力差再循环到所述尿素合成区。

    Server device, client device, information processing system, information processing method, and program
    8.
    发明授权
    Server device, client device, information processing system, information processing method, and program 有权
    服务器设备,客户端设备,信息处理系统,信息处理方法和程序

    公开(公告)号:US08176118B2

    公开(公告)日:2012-05-08

    申请号:US12263619

    申请日:2008-11-03

    IPC分类号: G06F15/16

    摘要: An information processing method of an information processing system including a client device functioning as a client and a server device functioning as a server which are capable of communication via a network, includes the steps of: at the server device, managing format identification information provided so as to be unique for each content data within the range of each data format, corresponding to the contents of each content; at the client device, causing execution of communication via network, for specifying a content, as to the server device; at the server device, transmitting, to the client device, format identification information correlated with a specified content in response to specification of a content via network from the client device; and at the client device, managing the received and obtained format identification information as corresponding to the specified content.

    摘要翻译: 一种信息处理系统的信息处理方法,包括作为客户端的客户端装置和作为能够通过网络通信的服务器的服务器装置,包括以下步骤:在服务器装置处,管理格式识别信息 对每个数据格式的范围内的每个内容数据是唯一的,对应于每个内容的内容; 在所述客户端设备处,通过网络执行对所述服务器设备的指定内容的通信; 在所述服务器设备处,响应于来自所述客户端设备的经由网络的内容的指定,将与指定内容相关联的格式识别信息发送到所述客户端设备; 并且在客户端设备处理与所指定的内容相对应的所接收和获得的格式识别信息。

    Axle bearing assembly
    9.
    发明授权
    Axle bearing assembly 有权
    轴承总成

    公开(公告)号:US08033735B2

    公开(公告)日:2011-10-11

    申请号:US12222043

    申请日:2008-07-31

    IPC分类号: F16C33/72 F16C33/76

    摘要: An axle bearing assembly includes a flange, on which a wheel is mounted; a hub shaft constructed of a cylindrical portion provided on an inboard side of the flange; a bearing having an inner ring; an outer ring; and rolling elements disposed between the inner ring and the outer ring; a first sealing member fixed to an inboard side between the inner ring and the outer ring; and a removable second sealing member is fitted to the inboard side of the first sealing member. The inner ring of the bearing portion is fixed to the cylindrical portion of the hub shaft.

    摘要翻译: 一个轴承组件包括一个凸缘,一个轮安装在该凸缘上; 轮毂轴,其由设置在所述凸缘的内侧的圆筒部构成; 具有内圈的轴承; 外圈; 以及设置在所述内圈和所述外圈之间的滚动元件; 固定在所述内圈和所述外圈之间的内侧的第一密封构件; 并且可拆卸的第二密封构件装配到第一密封构件的内侧。 轴承部的内圈固定在轮毂轴的圆筒部上。

    AXLE BEARING SYSTEM
    10.
    发明申请
    AXLE BEARING SYSTEM 有权
    轴承系统

    公开(公告)号:US20110129176A1

    公开(公告)日:2011-06-02

    申请号:US12737390

    申请日:2009-07-07

    IPC分类号: F16C19/38 B60B35/18 F16C33/76

    摘要: An axle bearing system is provided in which even in the event that a sufficient space is not present between a bearing portion in which a fluorine seal is used in a seal portion and a hub shaft, it is possible to establish an electric conduction between an outer ring and an inner ring in an ensured fashion.There is provided an axle bearing system having a bearing portion which includes an inner ring 11, an outer ring 12 and a plurality of rolling elements 13 which are interposed between the inner ring 11 and the outer ring 12 and which is installed on a hub shaft 2 with seal portions 20a, 20b which are each formed by a slinger, a core metal and a non-conductive seal provided therebetween mounted in annular opening portions formed between the inner ring 11 and the outer ring 12, wherein a conductive body 24 is provided in the seal portion 20b so as to provide an electrical conducting state between the outer ring 12 and the inner ring 11.

    摘要翻译: 提供一种车轴轴承系统,其中即使在密封部分中使用氟密封件的轴承部分和轮毂轴之间不存在足够的空间的情况下,也可以在外部部件之间建立导电 戒指和内圈。 提供了一种轴承系统,其具有轴承部分,该轴承部分包括内环11,外环12和多个滚动元件13,其中介于内圈11和外圈12之间,并且安装在轮毂轴 2具有密封部分20a,20b,每个密封部分20a,20b分别由设置在内环11和外环12之间的环形开口部分中的抛油环,芯金属和非导电密封件形成,其中提供导电体24 在密封部分20b中,以便在外环12和内环11之间提供导电状态。