Photochemical reaction device, photochemical reaction method using same, and lactam production method using said method

    公开(公告)号:US10414724B2

    公开(公告)日:2019-09-17

    申请号:US15517424

    申请日:2015-09-17

    Abstract: Provided is a photochemical reaction device wherein two partitions formed from an optically transparent material are arranged apart from each other between a light source and a reaction liquid, and an optically transparent fluid introduction/discharge means for introducing an optically transparent fluid between the partitions and discharging the fluid and a state change detection means for detecting a change in the state of the optically transparent fluid at the discharge side of the optically transparent fluid introduction/discharge means are provided. Also provided are a photochemical reaction method that uses the photochemical reaction device and a lactam production method that uses the photochemical reaction method. The present invention prevents decreases in the performance of the light source even when the optically transparent material in the photochemical reaction device is damaged, and makes it possible to reliably prevent ignition even if the reaction liquid is a flammable liquid.

    Method and system for preparing caprolactam
    76.
    发明授权
    Method and system for preparing caprolactam 有权
    制备己内酰胺的方法和系统

    公开(公告)号:US09518024B2

    公开(公告)日:2016-12-13

    申请号:US14996723

    申请日:2016-01-15

    Abstract: The present disclosure provides a method for preparing a caprolactam and the method includes steps of subjecting cyclohexanone oxime and sulfuric acid to a Beckmann rearrangement reaction to obtain a rearrangement mixture; neutralizing the rearrangement mixture and extracting the neutralized rearrangement mixture using an organic solvent sequentially; and subjecting the extracted organic solution to a hydrogenation reaction so as to simplify the process to produce a high quality caprolactam.

    Abstract translation: 本公开内容提供了制备己内酰胺的方法,该方法包括使环己酮肟和硫酸进行贝克曼重排反应以获得重排混合物的步骤; 中和重排混合物并依次用有机溶剂提取中和的重排混合物; 并对提取的有机溶液进行氢化反应,以简化生产高品质己内酰胺的方法。

    Method for producing amide compound
    78.
    发明授权
    Method for producing amide compound 有权
    酰胺化合物的制备方法

    公开(公告)号:US08816069B2

    公开(公告)日:2014-08-26

    申请号:US13635092

    申请日:2011-03-15

    CPC classification number: C07D201/06 C07D201/04 C07D225/02

    Abstract: The present invention relates to a method for producing a high purity, high quality amide compound, particularly, lactam. A first embodiment of the present invention is characterized in that an amount of each of a halide, an aldehyde compound, an alcohol compound and a nitrile compound contained in a solution recycled into an oxime-forming step is controlled to an amount of 0.4 mol % or less based on the ketone as a starting material. A second embodiment of the present invention is characterized in that one or more compounds selected from the group consisting of a ketone, an oxime and an amide compound are purified by hydrogenation and/or crystallization for eliminating impurities containing a double bond. A third embodiment of the present invention is characterized in that a content of impurities having a cyclic bridge structure is controlled by using a cycloalkanone purified by recrystallization.

    Abstract translation: 本发明涉及一种生产高纯度,优质酰胺化合物,特别是内酰胺的方法。 本发明的第一实施方案的特征在于,将再循环到肟形成步骤的溶液中所含的卤化物,醛化合物,醇化合物和腈化合物中的每一种的量控制为0.4mol% 基于酮作为原料。 本发明的第二个实施方案的特征在于,通过氢化和/或结晶纯化一种或多种选自酮,肟和酰胺化合物的化合物,以消除含有双键的杂质。 本发明的第三实施方案的特征在于通过使用通过重结晶纯化的环烷酮来控制具有环状桥结构的杂质的含量。

    Ammoximation process
    79.
    发明授权
    Ammoximation process 失效
    雾化过程

    公开(公告)号:US08779124B2

    公开(公告)日:2014-07-15

    申请号:US13889404

    申请日:2013-05-08

    Abstract: A redox ammoximation process in which a ketone or aldehyde is reacted with ammonia and oxygen in the presence of a catalyst, wherein: the catalyst is an aluminophosphate based redox catalyst having the qualitative general formula (I) M1M2AlPO-5 (I) in which M1 is at least one transition metal atom having redox catalytic capability; M2 is at least one metal atom in the (IV) oxidation state; M1 and M2 are different from each other; and a proportion of the phosphorous atoms in the M1M2AlPO-5 type structure are replaced by M2 atoms.

    Abstract translation: 一种氧化还原氨肟化方法,其中酮或醛在催化剂存在下与氨和氧反应,其中:该催化剂是具有定性通式(I)M1M2AlPO-5(I)的磷酸铝基氧化还原催化剂,其中M1 是至少一种具有氧化还原催化能力的过渡金属原子; M2是(IV)氧化态中的至少一个金属原子; M1和M2彼此不同; M1M2AlPO-5型结构中的一部分磷原子被M2原子取代。

    Gas and liquid phase catalytic Beckmann rearrangement of oximes to produce lactams
    80.
    发明授权
    Gas and liquid phase catalytic Beckmann rearrangement of oximes to produce lactams 有权
    气相和液相催化贝克曼重排肟产生内酰胺

    公开(公告)号:US08772476B2

    公开(公告)日:2014-07-08

    申请号:US13658495

    申请日:2012-10-23

    Abstract: Methods for producing lactams from oximes by performing a Beckmann rearrangement using a silicoaluminophosphate catalyst are provided. These catalysts may be used in gas phase or liquid phase reactions to convert oximes into lactams. High conversion of oxime and high selectivity for the desired lactams are produced using the disclosed methods, including high conversion and selectivity for ε-caprolactam produced from cyclohexanone oxime and high conversion and selectivity for ω-laurolactam produced from cyclododecanone oxime.

    Abstract translation: 提供了通过使用硅铝磷酸盐催化剂进行贝克曼重排来从肟产生内酰胺的方法。 这些催化剂可用于气相或液相反应以将肟转化成内酰胺。 使用所公开的方法制备肟的高转化率和高选择性,包​​括由环己酮肟产生的ε-己内酰胺的高转化率和选择性,以及由环十二酮肟产生的ω-月桂内酰胺的高转化率和选择性。

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