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    METHOD FOR PRODUCING NITROBENZENE BY ADIABATIC NITRIDING
    221.
    发明申请
    METHOD FOR PRODUCING NITROBENZENE BY ADIABATIC NITRIDING 有权
    通过自制氮化生产硝基苯的方法

    公开(公告)号：US20150175522A1

    公开(公告)日：2015-06-25

    申请号：US14415788

    申请日：2013-07-23

    Applicant: Bayer MaterialScience AG

    Inventor： Thomas Knauf ,  Michael Merkel ,  Antoni Mairata

    IPC: C07C201/06

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

    Abstract: The invention provides a continuous adiabatic process for the preparation of nitrobenzene by nitrating benzene with mixtures of sulfuric and nitric acids using a stoichiometric excess of benzene, wherein the content of organic compounds in the circulating sulfuric acid, at least during the start-up period of the production plant, is always kept below 1.0 mass percent, based on the total mass of circulating sulfuric acid. This is preferably achieved by a procedure in which, either after the end or before the beginning of a production cycle, the circulating sulfuric acid is circulated at elevated temperature so that the organics contained in the sulfuric acid, preferably comprising nitrobenzene and traces of benzene, dinitrobenzene and nitrophenols, are separated off in the evaporation apparatus for concentrating the sulfuric acid.

    Abstract translation: 本发明提供了一种连续的绝热方法，用于通过使用化学计量过量的苯将硫与硝酸的混合物硝化苯来制备硝基苯，其中循环硫酸中有机化合物的含量至少在启动期间 基于循环硫酸的总质量，生产厂总是保持在1.0质量％以下。 这优选通过以下程序来实现，其中，在生产周期结束或开始之前循环硫酸在升高的温度下循环，使得包含在硫酸中的有机物，优选包含硝基苯和痕量的苯， 二硝基苯和硝基苯酚在用于浓缩硫酸的蒸发装置中分离出来。

    METHOD FOR PRODUCING NITROBENZENE BY ADIABATIC NITRIDING
    222.
    发明申请
    METHOD FOR PRODUCING NITROBENZENE BY ADIABATIC NITRIDING 有权
    通过自制氮化生产硝基苯的方法

    公开(公告)号：US20150175521A1

    公开(公告)日：2015-06-25

    申请号：US14413277

    申请日：2013-07-23

    Applicant: Bayer MaterialScience AG

    Inventor： Thomas Knauf ,  Alexandre Racoes ,  Wolfgang Dohmen ,  Antoni Mairata

    IPC: C07C201/06

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

    Abstract: The invention relates to an adiabatic process for producing nitrobenzene by nitrating benzene with sulphuric acid mixtures and nitric acid mixtures using a stoichiometric excess of benzene and reusing non-reacted benzene, the content of the aliphatic organic compounds in the feed benzene being limited, by the targeted evacuation of aliphatic organic compounds to at least one step in the process, to a content of less than 1.5 mass-%, in relation to the total amount of feed benzene.

    Abstract translation: 本发明涉及通过使用化学计量过量的苯用硝酸混合物和硝酸混合物硝化苯并重新使用未反应的苯来生产硝基苯的绝热方法，所述进料苯中的脂肪族有机化合物的含量受到限制， 将脂肪族有机化合物定向排出至该步骤中的至少一个步骤，其含量相对于进料苯的总量小于1.5质量％。

    Method for continuous production of nitrobenzene
    223.
    发明授权
    Method for continuous production of nitrobenzene 有权
    连续生产硝基苯的方法

    公开(公告)号：US09012700B2

    公开(公告)日：2015-04-21

    申请号：US14240058

    申请日：2012-08-29

    Applicant: Thomas Knauf ,  Michael Merkel

    Inventor： Thomas Knauf ,  Michael Merkel

    IPC: C07C205/00 ,  C07C209/00 ,  C07C201/06 ,  C07C205/06

    CPC classification number: C07C201/06 ,  C07C201/08 ,  C07C201/16 ,  C07C205/06 ,  C07C209/36 ,  C07C211/46

    Abstract: The invention relates to a method for producing nitrobenzene, in which crude nitrobenzene is first produced by nitrating benzene and said crude nitrobenzene is then washed in succession in at least one acid wash, in at least one alkaline wash and in at least one neutral wash, at least one additional wash with an aqueous solution of a potassium salt being interposed between the last alkaline wash and the first neutral wash.

    Abstract translation: 本发明涉及生产硝基苯的方法，其中首先通过硝化苯生产粗硝基苯，然后将所述粗硝基苯在至少一种酸洗涤液，至少一种碱性洗涤液和至少一种中性洗涤液中连续洗涤， 在最后的碱性洗涤和第一中性洗涤之间插入钾盐水溶液至少一次另外的洗涤。

    METHOD FOR PREPARING LACTAMES, COMPRISING A PHOTONITROSATION STEP, FOLLOWED BY A BECKMANN TRANSPOSITION STEP
    225.
    发明申请
    METHOD FOR PREPARING LACTAMES, COMPRISING A PHOTONITROSATION STEP, FOLLOWED BY A BECKMANN TRANSPOSITION STEP 审中-公开
    制备LACTAMES的方法，包括光催化步骤，由BECKMANN传输步骤

    公开(公告)号：US20110137027A1

    公开(公告)日：2011-06-09

    申请号：US12993975

    申请日：2009-05-14

    Applicant: Thierry Aubert

    Inventor： Thierry Aubert

    IPC: C07D225/02 ,  C07C201/06

    CPC classification number: C07D201/04 ,  C07C249/06 ,  C07C2601/20 ,  C07D227/087 ,  C07C251/44

    Abstract: The invention relates to a method for preparing lactames, according to which a photonitrosation of a cycloallcane is carried out using nitrosyl chloride (NOCI). According to the invention, said photonitrosation is carried out by means of LEDs emitting a monochromatic light. The method according to the invention can also include a step comprising Beckmann transposition/dechlorination of the oxime hydrochloride generated during said phonitrosation, preferably carried out in a glass microreactor.

    Abstract translation: 本发明涉及一种制备内酰胺的方法，根据该方法，使用亚硝酰氯（NOCI）进行环烷烃的光子离子化。 根据本发明，所述光子离子化是通过发射单色光的LED进行的。 根据本发明的方法还可以包括一个步骤，该步骤包括贝克曼转移/脱氯在所述发声过程中产生的肟盐酸盐，优选在玻璃微反应器中进行。

    Process for producing nitromethane
    227.
    发明授权
    Process for producing nitromethane 失效
    硝基甲烷生产工艺

    公开(公告)号：US4992603A

    公开(公告)日：1991-02-12

    申请号：US363735

    申请日：1989-06-09

    Applicant: Roger Mari ,  Jacques Quibel

    Inventor： Roger Mari ,  Jacques Quibel

    IPC: C07C201/06 ,  C07C201/14 ,  C07C205/02

    CPC classification number: C07C201/06

    Abstract: Nitromethane is preparaed from a nitriding agent comprising an oxygenated nitrogen compound and a carbon compound containing two carbon atoms and at least one atom other than carbon and hydrogen.

    Abstract translation: 硝基甲烷由包含含氧氮化合物和含有两个碳原子的碳化合物和除碳和氢以外的至少一个原子的氮化剂制备。

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