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    Hvvevvtofry
    41.
    发明授权
    Hvvevvtofry 失效

    公开(公告)号：US2758991A

    公开(公告)日：1956-08-14

    申请号：US2758991D

    CPC classification number: C07D201/16

    method foe
    42.
    发明授权
    method foe 失效

    公开(公告)号：US2605261A

    公开(公告)日：1952-07-29

    申请号：US2605261D

    CPC classification number: C07D201/16

    PROCESS AND APPARATUS FOR PRODUCING AMMONIUM SULFATE CRYSTALS
    43.
    发明申请
    PROCESS AND APPARATUS FOR PRODUCING AMMONIUM SULFATE CRYSTALS 有权
    生产硫酸汞晶体的方法和装置

    公开(公告)号：US20160159657A1

    公开(公告)日：2016-06-09

    申请号：US14899579

    申请日：2014-06-20

    Applicant: CAP III B.V.

    Inventor： Johan Thomas Tinge ,  Geert Ekkelenkamp ,  Robert Geertman

    IPC: C01C1/24 ,  B01D9/00

    CPC classification number: C01C1/24 ,  B01D9/0022 ,  B01D9/0031 ,  B01D9/004 ,  B01D9/0063 ,  B01D2009/0086 ,  C01C1/248 ,  C07C249/08 ,  C07C2601/14 ,  C07D201/04 ,  C07D201/16 ,  C07C251/44

    Abstract: The present invention provides a continuous process for producing ammonium sulfate crystals, wherein said process comprises: (a) feeding to a first group of crystallization sections, which crystallization sections are heat integrated in series, a first aqueous ammonium sulfate solution that contains one or more impurities; (b) feeding to a second group of crystallization sections, which crystallization sections are heat integrated in series, a second aqueous ammonium sulfate solution that contains one or more impurities; (c) crystallizing ammonium sulfate crystals in each crystallization section respectively from each of said solutions of ammonium sulfate that contain one or more impurities; (d) purging a fraction of the ammonium sulfate solution that contains one or more impurities from each of said crystallization sections; and (e) discharging ammonium sulfate crystals from each crystallization section, characterized in that: (i) both the first group of crystallization sections and the second group of crystallization sections are together heat integrated in one series of crystallization sections; wherein the first group of crystallization sections operates at higher temperature than the second group of crystallization sections; and (ii) the composition of the first aqueous ammonium sulfate solution that contains one or more impurities is different to the composition of the second aqueous ammonium sulfate solution that contains one or more impurities. Further provided is apparatus suitable for producing ammonium sulfate crystals.

    Abstract translation: 本发明提供了一种用于生产硫酸铵晶体的连续方法，其中所述方法包括：（a）将第一组结晶部分进料到该第一组结晶部分，该结晶部分是串联的热积分法，第一组硫酸铵水溶液含有一种或多种 杂质; （b）将第二组结晶部分进料到该第二组结晶部分，该结晶部分串联加热一体化，含有一种或多种杂质的第二硫酸铵溶液; （c）分别从含有一种或多种杂质的所述硫酸铵溶液中分别在每个结晶段中结晶硫酸铵晶体; （d）从每个所述结晶部分清洗含有一种或多种杂质的硫酸铵溶液的一部分; 和（e）从每个结晶部分排出硫酸铵晶体，其特征在于：（i）第一组结晶部分和第二组结晶部分一起热集成在一系列结晶部分中; 其中所述第一组结晶段在比所述第二组结晶段更高的温度下操作; 和（ii）含有一种或多种杂质的第一硫酸铵水溶液的组成与含有一种或多种杂质的第二硫酸铵水溶液的组成不同。 还提供了适用于生产硫酸铵晶体的装置。

    Production method of N-vinyl-2-pyrrolidone
    44.
    发明授权
    Production method of N-vinyl-2-pyrrolidone 有权
    N-乙烯基-2-吡咯烷酮的制备方法

    公开(公告)号：US09096516B2

    公开(公告)日：2015-08-04

    申请号：US13109450

    申请日：2011-05-17

    Applicant: Hideto Sugiura ,  Toru Inaoka ,  Shigeyuki Nozaki ,  Yoshihisa Oka

    Inventor： Hideto Sugiura ,  Toru Inaoka ,  Shigeyuki Nozaki ,  Yoshihisa Oka

    IPC: C07D201/16 ,  B01D9/00 ,  C07D207/267

    CPC classification number: C07D207/267 ,  B01D9/0059 ,  C07D201/16

    Abstract: A method for producing N-vinyl-2-pyrrolidone by crystallization including: controlling a water content in a feed N-vinyl-2-pyrrolidone solution at an inlet of a crystallizer so as to be not lower than 0.7% by weight and not higher than 10% by weight based on the total weight of the N-vinyl-2-pyrrolidone solution; and supplying the feed N-vinyl-2-pyrrolidone solution to a crystallization process.

    Abstract translation: 通过结晶生产N-乙烯基-2-吡咯烷酮的方法包括：将结晶器入口处的进料N-乙烯基-2-吡咯烷酮溶液中的水含量控制在不低于0.7重量％且不高于 基于N-乙烯基-2-吡咯烷酮溶液的总重量的10重量％以上; 并将进料N-乙烯基-2-吡咯烷酮溶液供给至结晶过程。

    PROCESS FOR PREPARING PURIFIED CAPROLACTAM FROM THE BECKMANN REARRANGEMENT OF CYCLOHEXANE OXIME
    45.
    发明申请
    PROCESS FOR PREPARING PURIFIED CAPROLACTAM FROM THE BECKMANN REARRANGEMENT OF CYCLOHEXANE OXIME 有权
    来自贝克曼的环丙沙酮氧化还原的纯化己内酰胺的方法

    公开(公告)号：US20140171638A1

    公开(公告)日：2014-06-19

    申请号：US14132082

    申请日：2013-12-18

    Applicant: BASF SE

    Inventor： Rolf-Hartmuth Fischer

    IPC: C07D201/16

    CPC classification number: C07D201/16

    Abstract: A process is described for preparing purified caprolactam, comprising the steps a) extraction of crude caprolactam, obtained from the Beckmann rearrangement of cyclohexanone oxime, with an organic extractant, b) removal of the organic phase from step a), c) distillative separation of the organic extractant from the organic phase from step b) giving rise to water-containing lactam extract, being preceded by addition of the distillative separation, aqueous alkali metal hydroxide solution in an amount of from 0 to 10 mmol/kg of caprolactam, d) addition of 0 to 30 mmol of alkali metal hydroxide/kg of caprolactam to the water-containing lactam extract from step c), e) distillative removal of water from the water-containing lactam extract treated with alkali metal hydroxide from step d), f) freeing the caprolactam from step e) from by-products lower- and higher-boiling than caprolactam by distillation, with addition in steps c) and d) together of at least 1.5 mmol of alkali metal hydroxide/kg of caprolactam.

    Abstract translation: 描述了制备纯化的己内酰胺的方法，其包括以下步骤：a）从有机萃取剂中提取由Beckmann重排环己酮肟得到的粗己内酰胺，b）从步骤a）中除去有机相，c）蒸馏分离 来自步骤b）的来自有机相的有机萃取剂产生含水内酰胺提取物，之前加入蒸馏分离，碱金属氢氧化物水溶液的量为0至10mmol / kg己内酰胺，d） 向来自步骤c）的含水内酰胺提取物中加入0至30mmol碱金属氢氧化物/ kg己内酰胺，e）从碱金属氢氧化物处理的含水内酰胺提取物中蒸馏除去水，步骤d），f ）通过蒸馏将己内酰胺从步骤e）中脱除副产物比己内酰胺更低沸点和更高沸点，在步骤c）和d）中加入至少1.5mmol碱金属氢氧化物/ k g己内酰胺。

    Process for the purification of lactams
    48.
    发明授权
    Process for the purification of lactams 有权
    内酰胺纯化方法

    公开(公告)号：US08231765B2

    公开(公告)日：2012-07-31

    申请号：US12155065

    申请日：2008-05-29

    Applicant: Daniel Amoros ,  Philippe Leconte ,  Pierre Coqueret

    Inventor： Daniel Amoros ,  Philippe Leconte ,  Pierre Coqueret

    IPC: B01D3/34 ,  C07D201/02 ,  C07D201/16

    CPC classification number: C07D201/16 ,  C07D201/08 ,  Y10S203/90

    Abstract: A method and a plant are disclosed for purifying lactams, particularly lactams obtained by cyclizing hydrolysis of aminonitrile. The purification of ε-caprolactam obtained by cyclizing hydrolysis of aminocapronitrile is described which includes eliminating the ammonia from the reaction medium of the hydrolysis, then recovering the lactam from the medium in purified form. The recovery is carried out by performing at least a distillation of the lactam in the presence of a base producing optionally a fronts fraction having compounds more volatile than the lactam, a fraction having the lactam to be recovered to the degree of desired purity and a distillation tails having the lactam and compounds less volatile than the lactam. The distillation tails are treated by various processes such as evaporation in thin layers to recover the major part of the caprolactam and recycling the latter in the purification process.

    Abstract translation: 公开了一种用于纯化内酰胺，特别是通过环化氨基腈水解获得的内酰胺的方法和设备。 描述了通过环化氨基腈的水解获得的ε-己内酰胺的纯化，其包括从水解反应介质中除去氨，然后以纯化形式从培养基中回收内酰胺。 回收是通过在碱的存在下进行至少一种蒸馏来进行的，所述碱生产任选地具有比内酰胺更易挥发的化合物的前端部分，具有待回收的内酰胺至具有所需纯度的馏分和蒸馏 尾巴具有内酰胺和化合物比内酰胺更不易挥发。 蒸馏尾部通过各种方法处理，例如在薄层中蒸发以回收大部分己内酰胺并在纯化过程中回收己内酰胺。

    System and method for recovering caprolactam from rearrangement mixtures
    49.
    发明授权
    System and method for recovering caprolactam from rearrangement mixtures 有权
    从重排混合物中回收己内酰胺的系统和方法

    公开(公告)号：US08193348B2

    公开(公告)日：2012-06-05

    申请号：US12474968

    申请日：2009-05-29

    Applicant: Chien-Hsien Li

    Inventor： Chien-Hsien Li

    IPC: C07D201/16

    CPC classification number: C07D201/16 ,  C07D201/12

    Abstract: A system and a method for recovering caprolactam from a rearrangement mixture are provided. The system includes a neutralization unit; a buffering unit for receiving a crude lactam solution containing impurities content below a standard value and being fed from the neutralization unit; a temporary storage unit for receiving a crude lactam solution containing impurities above the standard value and being fed from the neutralization unit; a temporary extraction unit for performing batch extraction to separate out a first lactam solution; an extraction unit for performing continuous extraction to separate out a second lactam solution; and a recovery unit for allowing caprolactam to be recovered. In the present system and method, the crude lactam solution is selectively fed into the extraction unit for continuous extraction or to the temporary extraction unit for batch extraction, thereby maintaining continuity of operation, enhancing separation efficiency, and reducing both material consumption and purification loadings.

    Abstract translation: 提供了从重排混合物中回收己内酰胺的体系和方法。 该系统包括中和单元; 缓冲单元，用于接收含有低于标准值的杂质含量的粗内酰胺溶液并从中和单元进料; 临时存储单元，用于接收含有高于标准值的杂质的粗内酰胺溶液并从中和单元进料; 临时提取单元，用于进行分批提取以分离出第一内酰胺溶液; 提取单元，用于进行连续提取以分离第二内酰胺溶液; 和用于使己内酰胺回收的回收单元。 在本系统和方法中，将粗内酰胺溶液选择性地进料到用于连续萃取的提取单元中或者用于批量提取的临时提取单元，从而保持操作的连续性，提高分离效率，并减少材料消耗和净化负荷。

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