Steam cracking process and facility comprising injection of powder which
is collected at a single point
    2.
    发明授权
    Steam cracking process and facility comprising injection of powder which is collected at a single point 失效
    蒸汽裂解过程和设备包括在单个点收集的粉末的注入

    公开(公告)号:US5820747A

    公开(公告)日:1998-10-13

    申请号:US836147

    申请日:1997-06-25

    CPC分类号: C10G9/002 C10G9/16

    摘要: A steam cracking process and facility is described which comprises injection of erosive powder to effect at least partial decoking of transfer line exchangers without interrupting the steam cracking stream. The powder, preferably injected just upstream of the transfer line exchangers (TLE) (4), is separated from the cracked gases in primary gas/solid separators (5), temporarily stored in receiving drums at a controlled temperature and evacuated to a common powder storage and/or treatment module by pneumatic transfer by means of a relatively low flow of uncondensable gas. The process and facility can be used to collect solid fragments generated by injection of chemical compounds which are catalysts for the gasification of coke by steam.

    摘要翻译: PCT No.PCT / FR95 / 01718 Sec。 371日期:1997年6月25日 102(e)日期1997年6月25日PCT提交1995年12月22日PCT公布。 公开号WO96 / 20256 日期1996年7月4日描述了一种蒸汽裂解过程和设备,其包括喷射侵蚀性粉末以在不中断蒸汽裂解流的情况下至少部分地转移转移线交换器。 优选在输送管线交换器(TLE)(4)的上游注入的粉末与初级气体/固体分离器(5)中的裂化气体分离,在受控的温度下临时储存在接受鼓中并抽真空至普通粉末 储存和/或处理模块通过气流传递通过相对低的不可冷凝气体流动。 该方法和设备可用于收集通过注入化学化合物产生的固体碎片,化合物是通过蒸汽气化焦炭的催化剂。

    Flexible steam cracking process and corresponding steam cracking facility
    3.
    发明授权
    Flexible steam cracking process and corresponding steam cracking facility 失效
    柔性蒸汽裂解工艺及相应的蒸汽裂解设备

    公开(公告)号:US5972206A

    公开(公告)日:1999-10-26

    申请号:US860249

    申请日:1997-06-25

    CPC分类号: C10G9/16 Y10S585/95

    摘要: A flexible steam cracking process for hydrocarbon feeds comprises injection of particles with an average size of between 0.02 mm and 4 mm, at a circulation rate in indirect transfer line exchangers (4) of 20 to 180 m/s, and in a sufficient quantity to limit the increase in temperature at the outlet to the exchangers (4) to a value of less than 100.degree. C. per month, into at least one point upstream of an indirect transfer line exchanger (4), cracking zone (2) remaining in communication with downstream means (6) for the treatment of cooled effluents. At least 70% by weight of the quantity of injected particles is introduced between the outlet to the cracking zone (2) and the tubes of the indirect transfer line exchanger (4). Chemical decoking is carried out in the tubes of the cracking zone at time intervals of less than 4 months by establishing accelerated coke gasification conditions, for example by injecting compounds which catalyse gasification by steam, or by decoking in air and/or steam.

    摘要翻译: PCT No.PCT / FR95 / 01717 Sec。 371日期:1997年6月25日 102(e)日期1997年6月25日PCT提交1995年12月22日PCT公布。 WO96 / 20255 PCT出版物 日期1996年7月4日用于烃进料的柔性蒸汽裂解方法包括以20至180m / s的间接输送管线交换器(4)中的循环速率注入平均尺寸在0.02mm和4mm之间的颗粒,以及 以足够的量将限制出口到交换器(4)的温度升高到小于每月100℃的值到间接输送管线交换器(4)上游的至少一个点,裂化区 (2)与下游装置(6)保持通信,用于处理冷却的废水。 至少70重量%的注入颗粒的量被引入到裂化区(2)的出口和间接输送管线换热器(4)的管之间。 通过建立加速的焦化气化条件,例如通过注入通过蒸汽催化气化的化合物,或通过在空气和/或蒸汽中脱焦来在小于4个月的时间间隔内在裂化区的管中进行化学除焦。

    Olefin isomerisation process
    4.
    发明授权
    Olefin isomerisation process 失效
    烯烃异构化过程

    公开(公告)号:US5659104A

    公开(公告)日:1997-08-19

    申请号:US537924

    申请日:1996-01-22

    摘要: The invention concerns an isomerisation process for n-olefins containing at most 20 carbon atoms, consisting of bringing a feed containing the olefins into contact with an alumina based catalyst impregnated with 0.03% to 0.6% by weight of titanium and 0.05% to 5% by weight of an oxide of an element from group IIIA. The process can then be carried out in the presence of a small quantity of steam or it can be carried out in the absence of steam.

    摘要翻译: PCT No.PCT / FR95 / 00190 Sec。 371日期1996年1月22日 102(e)日期1996年1月22日PCT提交1995年2月17日PCT公布。 出版物WO95 / 23777 日期1995年9月8日本发明涉及含有至多20个碳原子的正烯烃的异构化方法,其包括使含有烯烃的进料与浸渍有0.03重量%至0.6重量%钛和0.05重量%的氧化铝基催化剂接触 %至5重量%的IIIA族元素的氧化物。 该方法然后可以在少量蒸汽的存在下进行,或者可以在没有蒸汽的情况下进行。

    Process and device for catalytic dehydrogenation of a C.sub.2+
paraffinic charge comprising means for inhibiting the freezing of water
in the effluent
    5.
    发明授权
    Process and device for catalytic dehydrogenation of a C.sub.2+ paraffinic charge comprising means for inhibiting the freezing of water in the effluent 失效
    用于催化脱氢的C2 +链烷烃装置的方法和装置,包括用于抑制流出物中水的冷冻的装置

    公开(公告)号:US5489725A

    公开(公告)日:1996-02-06

    申请号:US148274

    申请日:1993-11-08

    摘要: A process and a device for the catalytic dehydrogenation of a C.sub.2+ paraffinic hydrocarbon charge is applicable to the synthesis of methyl tert-butyl ether. Effluent coming from the dehydrogenation reactor and containing olefins and water is cooled in at least one heat exchanger (41), saturated with water in a column (3) and sent to a stripping column (10) where it is at least partly put in contact with a recycled aqueous liquid phase containing a solvent, preferably methanol. The compressed gaseous effluent in which the water is thereby inhibited from freezing by the methanol is cooled in a heat exchanger (13) then separated in separator (8) into olefins and into hydrogen. An aqueous liquid phase with methanol is decanted at (8) and recycled in column (10).

    摘要翻译: 用于C2 +链烷烃加料催化脱氢的方法和装置适用于甲基叔丁基醚的合成。 来自脱氢反应器并含有烯烃和水的流出物在至少一个在柱(3)中被水饱和的热交换器(41)中冷却,并被送至汽提塔(10),在该塔中至少部分地接触 与含有溶剂的循环水性液相,优选甲醇。 其中由此被水抑制的被压缩的气态流出物被甲醇冷冻,然后在热交换器(13)中冷却,然后在分离器(8)中分离成烯烃并进入氢气。 在(8)处将含有甲醇的水相液相倾析并在塔(10)中回收。

    Steam cracking installation and method with single controlled injection
of solid particles in a quenching exchanger
    7.
    发明授权
    Steam cracking installation and method with single controlled injection of solid particles in a quenching exchanger 失效
    在淬火换热器中单独控制注入固体颗粒的蒸汽裂解装置和方法

    公开(公告)号:US6160192A

    公开(公告)日:2000-12-12

    申请号:US202787

    申请日:1999-03-08

    摘要: A steam-cracking unit and a steam-cracking process with controlled injection of solid particles in a quenching exchanger (3) is described. The particles are injected through a single axial injection pipe that is arranged on the axis of input cone (2) of the quenching exchanger, just upstream from an impact separator-diffuser (6) that comprises solid surfaces that are arranged opposite the transfer pipe of the cracked gases toward the exchanger; this impact separator-distributor is located in input cone (2) of the exchanger and is gas-permeable along a number of passages and at least 70% opaque when viewed from the transfer pipe.

    摘要翻译: PCT No.PCT / FR97 / 01118 Sec。 371日期1999年3月8日 102(e)1999年3月8日PCT 1997年6月24日PCT公布。 公开号WO97 / 49784 日期1997年12月31日描述了一种在淬火换热器(3)中控制注入固体颗粒的蒸汽裂解装置和蒸汽裂解方法。 颗粒通过设置在淬火换热器的输入锥体(2)的轴线上的单个轴向喷射管喷射,恰好在冲击分离器 - 扩散器(6)的上游,冲击分离器 - 扩散器(6)包括固体表面,该固体表面与传输管 裂化气体朝向交换器; 该冲击分离器分配器位于交换器的输入锥体(2)中,并且沿着多个通道是气体可渗透的,并且当从传送管观察时具有至少70%的不透明度。