Method of retrofitting a heterogeneous exothermic synthesis reactor
    1.
    发明授权
    Method of retrofitting a heterogeneous exothermic synthesis reactor 失效
    改造异相放热合成反应器的方法

    公开(公告)号:US5882606A

    公开(公告)日:1999-03-16

    申请号:US739814

    申请日:1996-10-30

    摘要: In a method of modernizing a heterogeneous exothermic synthesis reactor (1) of the type comprising an external shell (2), in which at least one catalytic bed (15, 16, 17) is supported, the catalytic bed (15, 16, 17) is connected to an external boiler (21), for generating high pressure steam, by means of a reacted gas outlet nozzle (4) and a conduit (29) extending in said nozzle (4) thereby forming an annular airspace (30). Advantageously, the airspace (30) defines an outlet flowpath of the gases cooled in the boiler (21) which avoids overheating of the nozzle (4).

    摘要翻译: 在使包含至少一个催化床(15,16,17)的外壳(2)的类型的非均相放热合成反应器(1)的现代化方法中,催化床(15,16,17) )连接到外部锅炉(21),用于通过反应的气体出口喷嘴(4)和在所述喷嘴(4)中延伸的导管(29)产生高压蒸汽,从而形成环形空间(30)。 有利地,空域(30)限定在锅炉(21)中冷却的气体的出口流动路径,其避免喷嘴(4)的过热。

    Method and apparatus for in-situ modernization of a heterogeneous
exothermic synthesis reactor, particularly of the so-called kellogg type
    2.
    发明授权
    Method and apparatus for in-situ modernization of a heterogeneous exothermic synthesis reactor, particularly of the so-called kellogg type 失效
    用于非均相放热合成反应器的原位现代化的方法和装置,特别是所谓的凯洛格型

    公开(公告)号:US5585074A

    公开(公告)日:1996-12-17

    申请号:US366103

    申请日:1994-12-29

    IPC分类号: B01J8/04 C01C1/04 C01C1/00

    摘要: A method for "in-situ" modernization of a reactor for effecting heterogeneous exothermic synthesis reactions, especially of the so-called Kellogg type, including the preliminary step of providing at least three radial or axial-radial catalyst beds (11, 12, 13), includes the steps of providing a first gas/gas heat exchanger (18) between the first (11) and second (12) catalyst beds and a second gas-gas heat exchanger (29) in the third catalyst bed (13). Thanks to the provision of two exchangers (18, 29) for cooling of the gases flowing between the catalyst beds by means of indirect heat exchange, the present modernization method allows to achieve a reactor with a high conversion yield.

    摘要翻译: 一种用于实现异种放热合成反应(特别是所谓的凯洛格型)的反应器的现场现代化方法,包括提供至少三个径向或轴向径向催化剂床(11,12,13)的初步步骤 )包括在第一催化剂床(11)和第二催化剂床(12)之间提供第一气体/气体热交换器(18)和第三催化剂床(13)中的第二气体 - 气体热交换器(29)的步骤。 由于提供了用于通过间接热交换来冷却在催化剂床之间流动的气体的两个交换器(18,29),所以现代化方法允许实现具有高转化率的反应器。

    Method for in-situ modernization of a heterogeneous exothermic synthesis reactor
    3.
    发明授权
    Method for in-situ modernization of a heterogeneous exothermic synthesis reactor 失效
    异相放热合成反应器的现场现代化方法

    公开(公告)号:US06299849B1

    公开(公告)日:2001-10-09

    申请号:US09044240

    申请日:1998-03-19

    IPC分类号: C01C104

    摘要: A Method for in-situ modernization of a heterogeneous exothermic synthesis reactor, comprising the steps of providing at least a first and at least a second catalytic bed (12, 13) in an upper (2a) respectively lower (2b) portion of the reactor, providing additionally a lowermost catalytic bed (14) in the lower portion (2b) of the reactor having a reaction volume smaller than the reaction volume of the second catalytic bed (13), and loading the lowermost catalytic bed (14) with a catalyst having an activity higher that the activity of the catalyst loaded in the other beds (12, 13). Thanks to the above steps, the present method allows to obtain a reactor with high conversion yield.

    摘要翻译: 一种用于异相放热合成反应器的原位现代化的方法,包括以下步骤:在所述反应器的上部(2a)分别下部(2b)部分中提供至少第一和至少第二催化床(12,13) ,在所述反应器的下部(2b)中另外提供具有小于所述第二催化床(13)的反应体积的反应体积的最下层催化床(14),并且用催化剂装载所述最下层催化床(14) 其活性高于负载在其它床(12,13)中的催化剂的活性。 由于上述步骤,本方法可以获得高转化率的反应器。

    Isothermal tube reactor
    4.
    发明授权
    Isothermal tube reactor 有权
    等温管反应堆

    公开(公告)号:US08673232B2

    公开(公告)日:2014-03-18

    申请号:US13264118

    申请日:2010-03-25

    IPC分类号: F28D7/00

    摘要: A tube isothermal chemical reactor (1), comprising a vessel (2) with a central axis (A-A), and an annular tube heat exchanger (40) embedded in a catalytic reaction space, the exchanger (40) comprising a plurality of concentric ranks (10, 11) of tube packs (10a), each of said tube packs comprising parallel tubes (30), a respective heat-exchange fluid feeder (20) and a respective heat-exchange fluid collector (21).

    摘要翻译: 一种管等温化学反应器(1),包括具有中心轴线(AA)的容器(2)和嵌入在催化反应空间中的环形管式热交换器(40),所述交换器(40)包括多个同心排 (10,11),管组(10a)中的每个管组包括平行管(30),相应的热交换流体供给器(20)和相应的热交换流体收集器(21)。

    Process and Plant for Ammonia-Urea Production
    5.
    发明申请
    Process and Plant for Ammonia-Urea Production 有权
    氨 - 尿素生产过程和工厂

    公开(公告)号:US20140018575A1

    公开(公告)日:2014-01-16

    申请号:US14007100

    申请日:2012-02-10

    IPC分类号: C07C273/10

    摘要: A process for ammonia -urea production where: liquid ammonia produced in an ammonia section is fed to a urea section directly at the ammonia synthesis pressure, and where the liquid ammonia is purified at high pressure with the steps of: cooling the liquid ammonia (20) obtaining a cooled liquid ammonia stream (21), separating a gaseous fraction (22) comprising hydrogen and nitrogen from said cooled liquid ammonia, obtaining purified liquid ammonia (23) at a high pressure, and reheating said purified liquid ammonia (23) after separation of said gaseous fraction, obtaining a reheated purified ammonia (24) having a temperature suitable for feeding to the urea synthesis process. The application also deals with an ammonia -urea plant comprising an ammonia cooler, a liquid-gas separator and an ammonia re-heater and with a method for revamping existing ammonia -urea plants.

    摘要翻译: 一种氨 - 脲生产方法,其中在氨段产生的液氨直接以氨合成压力供给到尿素部分,并且液氨在高压下被纯化,其步骤是:冷却液氨(20 获得冷却的液氨流(21),从所述冷却的液氨中分离包含氢和氮的气态馏分(22),在高压下获得纯化液氨(23),并在 分离所述气态馏分,获得具有适于供给到尿素合成方法的温度的再加热的纯化氨(24)。 本申请还涉及一种氨脲装置,其包括氨冷却器,液气分离器和氨再加热器以及用于改造现有氨 - 脲装置的方法。

    Vertical isothermal shell-and-tube reactor
    7.
    发明授权
    Vertical isothermal shell-and-tube reactor 有权
    垂直等温壳管反应堆

    公开(公告)号:US08414840B2

    公开(公告)日:2013-04-09

    申请号:US13320410

    申请日:2010-08-06

    IPC分类号: B01J8/02

    摘要: Isothermal vertical reactor (1) for a chemical reaction, comprising a shell (2) with internal gas-permeable walls (16, 18) defining an inlet distribution chamber (17) and a product collecting chamber (19), an open-top catalytic bed between said gas-permeable walls, and a tube heat exchanger (5) embedded in said catalytic bed, the tube heat exchanger (5) comprising a bundle of U-tubes, where an inlet (14) is disposed to direct a fresh charge in an upper chamber (21) over the catalytic bed and the U-shaped top portion of the tube bundle; a portion (F1) of the fresh charge passes through the catalytic bed with a mixed axial-transversal flow, and another portion (F2) of the fresh charge enters the inlet gas-distribution chamber (17) and passes through the catalytic bed with a substantially transversal flow.

    摘要翻译: 用于化学反应的等温立式反应器(1),包括具有限定入口分配室(17)和产品收集室(19)的内部气体可渗透壁(16,18)的壳体(2),开放顶部催化剂 在所述气体可渗透壁之间的床和嵌入所述催化床中的管式热交换器(5)之间,所述管式热交换器(5)包括一束U形管,其中设置入口(14)以引导新鲜的电荷 在催化床上的上室(21)和管束的U形顶部; 新鲜电荷的一部分(F1)以混合的轴向横向流动通过催​​化床,新鲜电荷的另一部分(F2)进入入口气体分配室(17)并通过催化床 基本上横向流动。

    Plate type heat exchanger for a isothermal chemical reactor
    8.
    发明授权
    Plate type heat exchanger for a isothermal chemical reactor 有权
    用于等温化学反应器的板式热交换器

    公开(公告)号:US08302672B2

    公开(公告)日:2012-11-06

    申请号:US12090336

    申请日:2006-10-31

    IPC分类号: F28B1/00 B01J8/04

    摘要: Plate type heat exchanger (20,120) for a isothermal chemical reactor (60), of the type comprising a substantially box-shaped flattened body (22), defining an internal chamber (24) and equipped with an inlet connection (28) and an outlet connection (29) for a first flow of a heat exchanger operative fluid into and from said chamber (24), at least one supplying-distributing device (26, 126) of a second fluid flow, associated with said body (22) and in fluid communication with the internal chamber (24) thereof, in order to regulate the temperature of said operative fluid, said at least one supplying-distributing device (26,126) being supported inside said internal chamber (24) and in fluid communication therewith.

    摘要翻译: 用于等温化学反应器(60)的板式热交换器(20,120),其类型包括基本上为箱形的扁平本体(22),其限定内部室(24)并配备有入口连接(28)和出口 连接(29),用于将热交换器的第一流动流入和离开所述室(24),与所述主体(22)相关联的至少一个第二流体流的供应分配装置(26,126) 所述至少一个供应分配装置(26,126)被支撑在所述内部室(24)内并与其流体连通。