METHOD FOR SAFELY PREVENTING BACKFLOWING IN THE CONVEYING OF A FLUID
    5.
    发明申请
    METHOD FOR SAFELY PREVENTING BACKFLOWING IN THE CONVEYING OF A FLUID 有权
    用于在流体输送中更好地防止回流的方法

    公开(公告)号:US20110180151A1

    公开(公告)日:2011-07-28

    申请号:US13001467

    申请日:2009-06-16

    IPC分类号: F15D1/00

    摘要: A method for reliably avoiding backflow in the transport of a liquid under pressure via a transport pipe (1), in which a shut-off device (2) with differential pressure switching is arranged, into a container (3) which is under pressure and which comprises the liquid to be transported and/or another liquid is proposed, wherein a pressure accumulator (4) which is filled with the liquid to be transported up to a certain level and above the liquid level, in direct contact with the liquid to be transported, with an inert gas is arranged in the transport pipe (1) upstream from the shut-off device (2) in the transport direction, the inert gas being provided in the pressure accumulator (4) under an excess pressure and in an amount relative to the container (3) to be filled which are designed so that, in the case of a drop in the pressure in the transport pipe (1), the inert gas ensures a positive pressure difference in the transport pipe (1) to the container (3) over a period which is at least as long as the reaction time of the shut-off device (2) and the shut-off device (2) has an emptying pipe (6) with emptying valve (7).

    摘要翻译: 一种用于可靠地避免在压力下输送液体的回流的方法,该输送管(1)具有压差切换的切断装置(2),其中所述输送管(1)设置在处于压力下的容器(3)中, 其包括待运输的液体和/或另一种液体,其中填充有待运输的液体达到一定水平并高于液面的压力蓄积器(4)与液体直接接触 在输送方向上从切断装置(2)的上游配置有惰性气体输送的惰性气体,惰性气体在过压压力下设置在蓄压器(4)中, 相对于被填充的容器(3),其被设计成使得在输送管(1)中的压力下降的情况下,惰性气体确保输送管(1)中的正压差 容器(3)至少在一段时间内 只要关闭装置(2)和切断装置(2)的反应时间具有排空阀(7)的排空管(6)。

    Method for safely preventing backflowing in the conveying of a fluid
    6.
    发明授权
    Method for safely preventing backflowing in the conveying of a fluid 有权
    用于在流体输送中安全防止回流的方法

    公开(公告)号:US09086191B2

    公开(公告)日:2015-07-21

    申请号:US13001467

    申请日:2009-06-16

    IPC分类号: F17D1/08 F17D1/14 F16K15/00

    摘要: A method for reliably avoiding backflow in the transport of a liquid under pressure via a transport pipe (1), in which a shut-off device (2) with differential pressure switching is arranged, into a container (3) which is under pressure and which comprises the liquid to be transported and/or another liquid is proposed, wherein a pressure accumulator (4) which is filled with the liquid to be transported up to a certain level and above the liquid level, in direct contact with the liquid to be transported, with an inert gas is arranged in the transport pipe (1) upstream from the shut-off device (2) in the transport direction, the inert gas being provided in the pressure accumulator (4) under an excess pressure and in an amount relative to the container (3) to be filled which are designed so that, in the case of a drop in the pressure in the transport pipe (1), the inert gas ensures a positive pressure difference in the transport pipe (1) to the container (3) over a period which is at least as long as the reaction time of the shut-off device (2) and the shut-off device (2) has an emptying pipe (6) with emptying valve (7).

    摘要翻译: 一种用于可靠地避免在压力下输送液体的回流的方法,该输送管(1)具有压差切换的切断装置(2),其中所述输送管(1)设置在处于压力下的容器(3)中, 其包括待运输的液体和/或另一种液体,其中填充有待运输的液体达到一定水平并高于液面的压力蓄积器(4)与液体直接接触 在输送方向上从切断装置(2)的上游配置有惰性气体输送的惰性气体,惰性气体在过压压力下设置在蓄压器(4)中, 相对于被填充的容器(3),其被设计成使得在输送管(1)中的压力下降的情况下,惰性气体确保输送管(1)中的正压差 容器(3)至少在一段时间内 只要关闭装置(2)和切断装置(2)的反应时间具有排空阀(7)的排空管(6)。

    Preparation of aromatic or heteroaromatic nitriles
    10.
    发明授权
    Preparation of aromatic or heteroaromatic nitriles 失效
    芳香族或杂芳族腈的制备

    公开(公告)号:US5952262A

    公开(公告)日:1999-09-14

    申请号:US723915

    申请日:1996-09-30

    摘要: Preparation of aromatic or heteroaromatic nitrites of the formula I ##STR1## where X is nitrogen or C-R.sup.6 and all of the R substituents represent hydrogen, alkyl, halogen, nitro, amino or similar groups, provided at least one substituent is a cyano or alkylcyano group. The nitrites I are produced by reacting aromatic or heteroaromatic hydrocarbons of the formula II ##STR2## where X is nitrogen or C-R.sup.6, provided at least one substituent is C.sub.1 -C.sub.8 -alkyl, with ammonia and oxygen at 200 to 600.degree. C. under a pressure of 0.1 to 5 bar in the gas phase over a supported catalyst containing 0.5 to 20% by weight of vanadium oxide. The supported catalyst consists of from 2 to 30 particle fractions whose mean diameters differ by from 10 to 80% and the supporting carrier of the catalyst has a bulk density of 0.6 to 1.2 kg/liter.

    摘要翻译: 制备式I的芳族或杂芳族亚硝酸盐,其中X是氮或C-R6,所有R取代基代表氢,烷基,卤素,硝基,氨基或类似基团,提供至少一个取代基是氰基或烷基氰基。 亚硝酸盐I通过使式II的芳族或杂芳族化合物(其中X是氮或C-R 6)提供,其中至少一个取代基是C 1 -C 8 - 烷基,氨和氧在200-600℃的压力下 在含有0.5至20重量%氧化钒的负载型催化剂的气相中为0.1至5巴。 载体催化剂由2至30个颗粒级分组成,其平均直径为10至80%,催化剂的载体载体的堆积密度为0.6至1.2kg /升。