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    VERFAHREN ZUR HERSTELLUNG VON 1,3-BUTADIEN AUS N-BUTENEN DURCH OXIDATIVE DEHYDRIERUNG
    1.
    发明公开
    VERFAHREN ZUR HERSTELLUNG VON 1,3-BUTADIEN AUS N-BUTENEN DURCH OXIDATIVE DEHYDRIERUNG 审中-公开

    公开(公告)号：EP3402769A1

    公开(公告)日：2018-11-21

    申请号：EP17700238.3

    申请日：2017-01-11

    Applicant: BASF SE ,  Linde AG

    Inventor： JOSCH, Jan Pablo ,  KARANIKOULIS, Georgios ,  HAMMEN, Oliver ,  MOSSBACHER, Claudia ,  WENNING, Ulrike ,  WELLENHOFER, Anton ,  TOEGEL, Christine ,  REYNEKE, Hendrik

    IPC: C07C5/48 ,  C07C7/06 ,  C07C7/08 ,  C07C7/11 ,  C07C11/167

    Abstract: The invention relates to a process for preparing butadiene from n-butenes, comprising the steps of: A) providing a feedstock gas stream a containing n-butenes; B) feeding the feedstock gas stream a containing n-butenes and a gas containing oxygen into at least one oxidative dehydrogenation zone and oxidatively dehydrogenating n-butenes to butadiene, resulting in a product gas stream b containing butadiene, unreacted n-butenes, steam, oxygen, low-boiling hydrocarbons, high-boiling secondary components, optionally carbon oxides and optionally inert gases; Ca) cooling the product gas stream b by bringing same in contact with a coolant, and condensing at least some of the high-boiling secondary components; Cb) compressing the remaining product gas stream b in at least one compression stage, resulting in at least one aqueous condensate stream c1 and one gas stream c2 containing butadiene, n-butenes, steam, oxygen, low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases; Da) removing non-condensable and low-boiling gas constituents comprising oxygen, low-boiling hydrocarbons, optionally carbon oxides and optionally inert gases as a gas stream d2 from gas stream c2 by absorbing the C4 hydrocarbons comprising butadiene and n-butenes in an absorbent, resulting in an absorbent stream laden with C4 hydrocarbons and gas stream d2, and Db) subsequently desorbing the C4 hydrocarbons from the laden absorbent stream in a desorption column, resulting in a C4 product gas stream d1. The invention is characterized in that a polymerization inhibitor is added in step Db) at the column head of the desorption column.

    PRODUCTION OF STYRENE FROM ETHYLBENZENE USING AZEOTROPIC VAPORIZATION AND LOW OVERALL WATER TO ETHYLBENZENE RATIOS
    7.
    发明公开
    PRODUCTION OF STYRENE FROM ETHYLBENZENE USING AZEOTROPIC VAPORIZATION AND LOW OVERALL WATER TO ETHYLBENZENE RATIOS 审中-公开
    苯乙烯从ETHYLBENZENE共沸扩张和水之间和乙苯较低的总生产关系

    公开(公告)号：EP2651859A1

    公开(公告)日：2013-10-23

    申请号：EP11848984.8

    申请日：2011-11-16

    Applicant: Lummus Technology Inc.

    Inventor： GAMI, Ajaykumar, Chandravadan ,  RAM, Sanjeev

    IPC: C07C5/32 ,  C07C7/06 ,  C07C15/46 ,  C07C15/073 ,  C07B35/04 ,  B01J19/24

    CPC classification number: C07C5/333 ,  C07C7/04 ,  C07C7/06 ,  Y02P20/51 ,  C07C15/46

    Abstract: A process for dehydrogenation of alkylaromatic hydrocarbon, including: contacting a reactant vapor stream, comprising an alkylaromatic hydrocarbon and steam and having a first steam to alkylaromatic hydrocarbon ratio, with a dehydrogenation catalyst to form a vapor phase effluent comprising a product hydrocarbon, the steam, and unreacted alkylaromatic hydrocarbon; feeding at least a portion of the effluent to a splitter to separate the product hydrocarbon from the unreacted alkylaromatic hydrocarbon; recovered from the splitter as bottoms and overheads fractions, respectively; recovering heat from a first portion of said overheads fraction by indirect heat exchange with a mixture comprising alkylaromatic hydrocarbon and water to at least partially condense said portion and to form an azeotropic vaporization product comprising alkylaromatic vapor and steam having a second steam to alkylaromatic hydrocarbon ratio; and combining the azeotropic vaporization product with additional alkylaromatic hydrocarbon and additional steam, together or separately, to form the reactant vapor stream.

    Process for production of indene from coal tar distillate
    8.
    发明公开
    Process for production of indene from coal tar distillate 审中-公开
    Verfahren zur Herstellung von Inden aus Kohlenteerdistillat

    公开(公告)号：EP1132452A3

    公开(公告)日：2002-01-30

    申请号：EP01101723.3

    申请日：2001-01-25

    Applicant: Adchemco Corporation

    Inventor： Mori, Hiroaki ,  Sugio, Youko

    IPC: C10C1/08 ,  C07C7/06 ,  C07C7/08 ,  C07C13/465

    CPC classification number: C10G1/04

    Abstract: Indene is produced from an indene-containing coal tar distillate by adding a glycol to the indene-containing coal tar distillate and then conducting azeotropic distillation to obtain an indene fraction while eliminating benzonitrile from the indene-containing coal tar distillate.

    Abstract translation: 通过向含有含茚煤焦油馏出物中加入二醇，然后进行共沸蒸馏以获得茚馏分，同时从含有含茚的煤焦油馏出物中除去苄腈，从含茚的焦油馏出物中生成茚。

    Azeotropic distillation process for recovery of diamondoid compounds from hydrocarbon streams
    9.
    发明公开
    Azeotropic distillation process for recovery of diamondoid compounds from hydrocarbon streams 失效
    Azeotrope Destillationsverfahren zurRückgewinnungvon Diamondoid-Verbindungen ausKohlenwasserstoffströmen。

    公开(公告)号：EP0462734A1

    公开(公告)日：1991-12-27

    申请号：EP91305194.2

    申请日：1991-06-10

    Applicant: MOBIL OIL CORPORATION

    Inventor： Alexander, Richard Alan ,  Whitehurst, Darrell Duayne

    IPC: C10G7/08 ,  C10G21/28 ,  C07C7/06

    CPC classification number: C10G7/08 ,  C10G21/28

    Abstract: An azeotropic distillation method is disclosed for separating diamondoids from a near-boiling solvent. The method is particularly useful for recovering diamondoids extracted from a produced natural gas stream via hydrocarbon solvent injection. The method involves adding water or water/furfural to form an azeotrope with the diamondoid compounds.

    Abstract translation: 公开了用于将近似沸点溶剂中的金刚石分离的共沸蒸馏法。 该方法特别适用于通过烃溶剂注入来回收从产生的天然气流中提取的金刚石。 该方法包括加入水或水/糠醛以与类金刚石化合物形成共沸物。

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