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    METHOD FOR REMOVING HCN FROM CRUDE DINITRO TOLUENE
    226.
    发明申请
    METHOD FOR REMOVING HCN FROM CRUDE DINITRO TOLUENE 有权
    从原料中除去HCN的方法

    公开(公告)号：US20160194270A1

    公开(公告)日：2016-07-07

    申请号：US14916210

    申请日：2014-09-01

    Applicant: BASF SE

    Inventor： Yuan Shen DAI ,  Katharina SPUHL ,  Renate HEMPEL

    IPC: C07C201/16 ,  C07C201/08

    CPC classification number: C07C201/16 ,  C07C201/08 ,  C07C205/06

    Abstract: A process for the preparation of dintrotoluene which comprises (a) nitrating toluene with a nitrating acid, wherein said nitrating acid is a mixture of nitric acid and sulfuric acid, in one or more nitration steps, and separating the nitrating acid from the process stream thus formed, wherein a crude mixture comprising dinitrotoluene and a fraction of said nitrating acid dissolved therein is obtained, said crude mixture further comprising at least 50 ppm of HCN, and (b) washing the crude dinitrotoluene containing mixture in one or more washing steps, wherein, before the first washing step is carried out, the crude mixture is distilled and/or stripped to remove HCN therefrom, wherein a crude dinitrotoluene containing mixture which is essentially free of HCN is obtained.

    Abstract translation: 一种制备二苯并芴的方法，其包括（a）在一个或多个硝化步骤中将硝酸与硝酸反应，其中所述硝酸是硝酸和硫酸的混合物，并将硝酸与工艺流分离，因此 形成，其中获得包含二硝基甲苯和所述硝酸的一部分溶解在其中的粗混合物，所述粗混合物还包含至少50ppm的HCN，和（b）在一个或多个洗涤步骤中洗涤含有二硝基甲苯的粗混合物，其中 ，在进行第一洗涤步骤之前，将粗混合物蒸馏和/或汽提以从其中除去HCN，其中获得基本上不含HCN的粗二硝基甲苯混合物。

    Removal of non-aromatic impurities from a nitration process
    227.
    发明授权
    Removal of non-aromatic impurities from a nitration process 有权
    从硝化过程中去除非芳族杂质

    公开(公告)号：US09139509B2

    公开(公告)日：2015-09-22

    申请号：US13636478

    申请日：2011-02-17

    Applicant: Alfred A. Guenkel ,  Sergio Berretta

    Inventor： Alfred A. Guenkel ,  Sergio Berretta

    IPC: C07C205/00 ,  C07B41/00 ,  C07C201/16

    CPC classification number: C07C201/16 ,  Y02P20/582 ,  C07C205/06 ,  C07C205/12

    Abstract: A method and apparatus for removing non-aromatic impurities from non-nitrated aromatic reactant in a nitration production process, in which process an aromatic reactant is nitrated (100) to produce a nitrated aromatic product using a molar excess of the aromatic reactant, and non-nitrated aromatic reactant is recovered (102) from the produced nitrated aromatic product and is recycled (104) for use in the nitration production process. A portion of the removed excess non-nitrated aromatic reactant is diverted (106) and subjected to nitration (108). The nitrated stream may be further processed by separating out the spent acids (110) and the non-aromatic impurities (116). These streams may be sent (114, 118) to a suitable location in the nitration production train.

    Abstract translation: 一种用于在硝化生产过程中从非硝化芳族反应物除去非芳族杂质的方法和装置，其中芳族反应物被硝化（100）以产生使用摩尔过量的芳族反应物的硝化芳族产物， 硝酸芳香族反应物（102）从所生产的硝化芳香族产物中回收（102）并循环使用（104），用于硝化生产过程。 去除的过量非硝化芳族反应物的一部分被转移（106）并进行硝化（108）。 可以通过分离废酸（110）和非芳族杂质（116）来进一步处理硝化物流。 这些流可以被发送（114,118）到硝化生产列车中的合适位置。

    PROCESS FOR THE PRODUCTION OF NITROBENZENE BY ADIABATIC NITRATION
    228.
    发明申请
    PROCESS FOR THE PRODUCTION OF NITROBENZENE BY ADIABATIC NITRATION 有权
    通过ADIABATIC NITRATION生产硝基苯的方法

    公开(公告)号：US20150166460A1

    公开(公告)日：2015-06-18

    申请号：US14415794

    申请日：2013-07-23

    Applicant: Bayer MaterialScience AG

    Inventor： Thomas Knauf ,  Michael Merkel

    IPC: C07C201/08 ,  C07C201/16

    CPC classification number: C07C201/08 ,  C07C201/16 ,  C07C205/06

    Abstract: The present invention provides a continuous process for the production of nitrobenzene by nitration of benzene with mixtures of sulfuric and nitric acid using a stoichiometric excess of benzene, in which the content of aliphatic organic compounds in the feed benzene during the start-up period of the production plant is always maintained at less than 1.5 wt. %, based on the total mass of the feed benzene. This is achieved either by mixing the feed benzene comprising recycled unreacted benzene (recycled benzene) and benzene newly supplied to the reaction (fresh benzene) in appropriate quantitative ratios during the start-up period, depending on the purity of the two streams, or by completely omitting the recycling of unreacted benzene during the start-up period, i.e. the feed benzene consists only of benzene newly supplied to the reaction.

    Abstract translation: 本发明提供了一种使用化学计量过量的苯硝化苯与硫酸和硝酸的混合物来生产硝基苯的连续方法，其中在起始时期的进料苯中的脂族有机化合物的含量 生产厂总是维持在1.5重量％以下。 ％，基于进料苯的总质量。 这可以通过在启动期间将包含再循环的未反应苯（再循环苯）和新提供给反应的苯（新鲜苯）的进料苯与合适的定量比例混合，取决于两个流的纯度，或者通过 在启动期间完全省略未反应苯的再循环，即进料苯仅由新提供给反应的苯组成。

    Process for the preparation of fluorinated aromatic compounds
    229.
    发明授权
    Process for the preparation of fluorinated aromatic compounds 失效
    氟化芳族化合物的制备方法

    公开(公告)号：US6114589A

    公开(公告)日：2000-09-05

    申请号：US170381

    申请日：1998-10-13

    Applicant: Thomas Schach ,  Thomas Wessel ,  Maren Gutermuth

    Inventor： Thomas Schach ,  Thomas Wessel ,  Maren Gutermuth

    IPC: B01J31/02 ,  C07B39/00 ,  C07B61/00 ,  C07C45/63 ,  C07C45/84 ,  C07C47/55 ,  C07C201/12 ,  C07C201/16 ,  C07C205/12 ,  C07C253/30

    CPC classification number: C07C253/30 ,  C07B39/00 ,  C07C201/12 ,  C07C45/63

    Abstract: The invention relates to a process for the preparation of fluorinated compoundsAz.sub.x ArF.sub.w Cl.sub.(y-w) R.sub.z (1)in which Az is a radical --F, --Cl, --Br, --NO.sub.2, --CN, --CF.sub.3, --CCl.sub.3, --CHO, --CO(C.sub.n H.sub.2n+1), --COX or --SO.sub.2 X, where X is F, Cl or Br, x is an integer from 1 to 3, Ar is a phenyl radical, pyridyl radical or naphthyl, w is an integer from 1 to y, y is an integer from 1 to 5, R is H, an alkyl radical or an alkoxy radical having from 1 to 10 carbon atoms, z is an integer from 1 to 5, (x+y+z) is the number of all substitutable valences on the radical Ar, which comprises reacting a compoundAz.sub.x ArCl.sub.y R.sub.z (2),with an alkali metal fluoride in the presence of a component a) or a mixture of component a) and at least one of components b), c), d) and/or e), component a) being one or more quaternary ammonium compounds which contain one or more radicals --(C.sub.m H.sub.2m O)R.sup.5, component b) being an amidophosphonium salt, component c) being a quaternary ammonium salt, component d) being a quaternary phosphonium salt, component e) being a polyether, and carrying out the reaction at from 50 to 250.degree. C., removing the compound of the formula (1) formed during the reaction by distillation, and the compound of the formula (2) is fed to the reaction mixture at a rate corresponding to the rate at which the compound of the formula (1) is removed.

    Abstract translation: 本发明涉及一种制备氟化化合物的方法，其中Z 1为基团-F，-Cl，-Br，-NO 2，-CN，-CF 3，-CCl 3，-CHO - ， - CO（CnH2n + 1），-COX或-SO2X，其中X为F，Cl或Br，x为1至3的整数，Ar为苯基，吡啶基或萘基，w为1至y的整数 y为1〜5的整数，R为H，烷基或碳原子数为1〜10的烷氧基，z为1〜5的整数，（x + y + z）为全部数 在基团Ar上具有可取代价，其包括使化合物AZxArClyRz（2）与碱金属氟化物在组分a）或组分a）和组分b），c），d）中的至少一种的存在下反应， 和/或e）组分a）是一种或多种含有一个或多个基团的季铵化合物 - （CmH2mO）R5，组分b）是酰胺鏻盐，组分c）是季铵盐，组分d）是 季鏻盐，组分e）b 取代聚醚，并在50-250℃下进行反应，通过蒸馏除去反应期间形成的式（1）化合物，将式（2）化合物加入到反应混合物中 对应于除去式（1）的化合物的速率的速率。

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