公开(公告)号：US06258949B1

公开(公告)日：2001-07-10

申请号：US09526885

申请日：2000-03-16

申请人： Masaru Kitamura ,  Yasumoto Shimazu

发明人： Masaru Kitamura ,  Yasumoto Shimazu

IPC分类号： C07D20104

CPC分类号： B01J8/02 ,  B01J8/24 ,  B01J2208/00106 ,  C07D201/04 ,  Y02P20/52

摘要： An apparatus for the production of &egr;-caprolactam is provided which comprises (i) a fluidized bed reactor having a solid catalyst therein for subjecting cyclohexanone oxime to a rearrangement reaction to obtain a reaction product containing unreacted cyclohexanone oxime and (ii) a fixed bed reactor packed with a solid catalyst for subjecting the unreacted cyclohexanone oxime to a rearrangement reaction to obtain &egr;-caprolactam. Using the apparatus, &egr;-caprolactam is obtained with a high yield.

摘要翻译： 提供了一种用于生产ε-己内酰胺的装置，其包括（i）其中具有固体催化剂的流化床反应器，用于使环己酮肟进行重排反应以获得含有未反应的环己酮肟的反应产物和（ⅱ）固定床反应器 填充固体催化剂，使未反应的环己酮肟进行重排反应，得到ε-己内酰胺。 使用该装置，以高产率获得ε-己内酰胺。

公开(公告)号：US07071360B2

公开(公告)日：2006-07-04

申请号：US10105321

申请日：2002-03-26

申请人： Yasumoto Shimazu ,  Kanji Kuwahara ,  Masaru Kitamura

发明人： Yasumoto Shimazu ,  Kanji Kuwahara ,  Masaru Kitamura

IPC分类号： C07C249/00

CPC分类号： B01D1/065 ,  C07C249/14 ,  C07C2601/14 ,  C07C251/44

摘要： A method is provided for evaporating cyclohexanone oxime in which cyclohexanone oxime is evaporated using a falling-film evaporator with wetting the evaporation surface of the evaporator well with the cyclohexanone oxime at a pressure of less than about 1060 Torr with a falling rate of the cyclohexanone oxime of about 170 kg/hour or more per one meter around the circumference of evaporation surface at the lowest part of the evaporator. In this method, the cyclohexanone oxime is evaporated efficiently with little decomposition thereof, while preventing the plugging of the pipes of the evaporator and continuously carrying out the operation of the evaporator for a long period of time.

公开(公告)号：US06265574B1

公开(公告)日：2001-07-24

申请号：US09500997

申请日：2000-02-09

申请人： Masaru Kitamura ,  Yasumoto Shimazu ,  Makoto Yako

发明人： Masaru Kitamura ,  Yasumoto Shimazu ,  Makoto Yako

IPC分类号： C07D20104

CPC分类号： B01J38/12 ,  B01J29/90 ,  C07D201/04 ,  Y02P20/52 ,  Y02P20/584 ,  Y02P20/588

摘要： A process for producing &egr;-caprolactam is provided which comprises the steps of subjecting cyclohexanone oxime to a gaseous phase Beckmann rearrangement reaction in a fluidized bed system using a solid catalyst and re-generating the catalyst, wherein said process comprises a step of treating the catalyst with an oxygen-containing gas at an elevated temperature in a re-generation step so that the nitrogen content of the catalyst falls within a range of 10 ppm to 2,500 ppm on its way to the reaction step from the re-generating step. According to the present invention, &egr;-caprolactam is produced with a high conversion or a high selectivity without interrupting the rearrangement reaction or the re-generation step.

摘要翻译： 提供了一种生产ε-己内酰胺的方法，其包括以下步骤：使用固体催化剂在流化床系统中使环己酮肟进行气相贝克曼重排反应并重新产生催化剂，其中所述方法包括处理催化剂的步骤 在再生步骤中在升高的温度下含有氧的气体，使得在从再生步骤到反应步骤的途中，催化剂的氮含量在10ppm至2,500ppm的范围内。 根据本发明，在不中断重排反应或重生步骤的情况下，以高转化率或高选择性生产ε-己内酰胺。

公开(公告)号：US06433166B1

公开(公告)日：2002-08-13

申请号：US09887360

申请日：2001-06-25

申请人： Yasumoto Shimazu ,  Hiroyuki Umida ,  Masami Fukao

发明人： Yasumoto Shimazu ,  Hiroyuki Umida ,  Masami Fukao

IPC分类号： C07D20116

摘要： A high purity &egr;-caprolactam is prepared by pouring a molten crude &egr;-caprolactam and a solvent comprising an aliphatic hydrocarbon and having a lower temperature than that of the crude &egr;-caprolactam, into a vessel and mixing them to obtain a first slurry containing a crystallized &egr;-caprolactam. The slurry is then subjected to a solid-liquid separation to obtain &egr;-caprolactam and a first liquid phase. This process can effectively remove impurities from a crude &egr;-caprolactam, which is obtained by for example, subjecting cyclohexanone oxime to the Beckmann rearrangement.