中科微点-全球专利检索

  1. Login
  2. Sign Up

Search Results

234 records (took 0.014 seconds)

    Process and apparatus for producing ammonium sulfate crystals
    82.
    发明授权
    Process and apparatus for producing ammonium sulfate crystals 有权

    公开(公告)号：US09908785B2

    公开(公告)日：2018-03-06

    申请号：US14899579

    申请日：2014-06-20

    Applicant: CAP III B.V.

    Inventor： Johan Thomas Tinge ,  Geert Ekkelenkamp ,  Robert Geertman

    IPC: B01D9/00 ,  C01C1/24 ,  C01C1/248 ,  C07D201/16 ,  C07D201/04 ,  C07C249/08

    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.

    SYSTEM AND METHOD FOR RECOVERING CAPROLACTAM FROM REARRANGEMENT MIXTURES
    84.
    发明申请
    SYSTEM AND METHOD FOR RECOVERING CAPROLACTAM FROM REARRANGEMENT MIXTURES 有权
    从复配混合物中回收盖洛米特的系统和方法

    公开(公告)号：US20090312542A1

    公开(公告)日：2009-12-17

    申请号：US12474968

    申请日：2009-05-29

    Applicant: Chien-Hsien LI

    Inventor： Chien-Hsien LI

    IPC: C07D201/16 ,  B01J19/00

    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。

    Process for recovering caprolactam from aqueous caprolactam product using in situ prepared alkali amino caproate
    85.
    发明授权
    Process for recovering caprolactam from aqueous caprolactam product using in situ prepared alkali amino caproate 有权
    使用原位制备的碱性氨基己酸酯从己酸内酰胺产物中回收己内酰胺的方法

    公开(公告)号：US07615137B2

    公开(公告)日：2009-11-10

    申请号：US10486727

    申请日：2002-08-23

    Applicant: Arnold G M Jetten ,  Nicolaas F Haasen ,  Gerardus W A Hangx

    Inventor： Arnold G M Jetten ,  Nicolaas F Haasen ,  Gerardus W A Hangx

    IPC: B01D3/34 ,  C07D201/16

    CPC classification number: C07D201/16 ,  C07D223/10

    Abstract: A continuous process is provided for recovering caprolactam from aqueous caprolactam product which includes (i) caprolactam, (ii) impurities, and (iii) water by (a) adding alkali hydroxide to the aqueous caprolactam product, in an amount of not more than 100 mmol alkali hydroxide per kg of caprolactam; (b) reacting at least part of the added alkali hydroxide to form alkali amino caproate, to obtain a caproate-enriched caprolactam product; and (c) distilling the caproate-enriched caprolactam product at reduced pressure.

    Abstract translation: 提供了一种连续的方法从己内酰胺产物中回收己内酰胺，其中包括（i）己内酰胺，（ii）杂质和（iii）水，通过（a）向己酸内酰胺产物中加入碱金属氢氧化物，其量不超过100 mmol碱金属氢氧化物/ kg己内酰胺; （b）使至少部分加入的碱金属氢氧化物反应形成碱性氨基己酸酯，得到富含己酸的己内酰胺产物; 和（c）在减压下蒸馏富含己内酰胺的己内酰胺产物。

    Amide-based compounds, production, recovery, purification and uses thereof
    86.
    发明授权
    Amide-based compounds, production, recovery, purification and uses thereof 有权
    酰胺类化合物，生产，回收，纯化及其用途

    公开(公告)号：US07482446B2

    公开(公告)日：2009-01-27

    申请号：US11311604

    申请日：2005-12-19

    Applicant: Alan Levy ,  Gregory Cleotelis, II ,  James Sawyer ,  Nolan Henrich, III ,  Mohammed Loya ,  Matthew Warren ,  Gregory Moore

    Inventor： Alan Levy ,  Gregory Cleotelis, II ,  James Sawyer ,  Nolan Henrich, III ,  Mohammed Loya ,  Matthew Warren ,  Gregory Moore

    IPC: C07D201/04 ,  C07D201/16

    CPC classification number: C07D201/04

    Abstract: Methods are disclosed of producing and purifying at least one amide. In accordance with one of the methods disclosed herein, the at least one amide is produced by providing an organic liquid comprising at least one oxime, providing at least one catalyst, adding the at least one catalyst to the organic liquid to form a rearrangement mass, wherein the rearrangement mass comprises at least one amide, at least one impurity, and the at least one catalyst, and heating the rearrangement mass to a temperature of at least about 115° C. for a period of time in order to sulfonate, break down and/or reduce the concentration of some of the at least one impurity in the rearrangement mass.

    Abstract translation: 公开了生产和纯化至少一种酰胺的方法。 根据本文公开的方法之一，通过提供包含至少一种肟的有机液体来提供至少一种酰胺，提供至少一种催化剂，将至少一种催化剂加入到有机液体中以形成重排质量， 其中所述重排质量包含至少一种酰胺，至少一种杂质和所述至少一种催化剂，并且将所述重排质量加热至至少约115℃的温度一段时间以便磺化，分解 和/或降低重排质量中的一些至少一种杂质的浓度。

    Purification of caprolactam
    87.
    发明授权
    Purification of caprolactam 有权
    己内酰胺的纯化

    公开(公告)号：US07217818B2

    公开(公告)日：2007-05-15

    申请号：US10534802

    申请日：2003-11-11

    Applicant: Rolf-Hartmuth Fischer ,  Hermann Luyken ,  Andreas Ansmann ,  Peter Bassler ,  Christoph Benisch ,  Stefan Maixner ,  Johann-Peter Melder

    Inventor： Rolf-Hartmuth Fischer ,  Hermann Luyken ,  Andreas Ansmann ,  Peter Bassler ,  Christoph Benisch ,  Stefan Maixner ,  Johann-Peter Melder

    IPC: C07D201/16

    CPC classification number: C07D201/16 ,  C07D201/08

    Abstract: A process for removing high boilers from crude caprolactam which comprises high boilers, caprolactam and in some cases low boilers, and which has been obtained by a) reacting 6-aminocapronitrile with water to give a reaction mixture b) removing ammonia and unconverted water from the reaction mixture to obtain crude caprolactam, which comprises c) feeding the crude caprolactam to a distillation apparatus to obtain a first substream via the top as a product and a second substream via the bottom, by setting the pressure in the distillation in such a way that the bottom temperature does not go below 170° C., and adjusting the second substream in such a way that the caprolactam content of the second substream is not less than 10% by weight, based on the entire second substream.

    Abstract translation: 一种从粗己内酰胺中除去高锅炉的方法，其包括高锅炉，己内酰胺，在某些情况下是低锅炉，并且通过以下方法获得：a）使6-氨基己腈与水反应得到反应混合物; b）除去氨和未转化的水 反应混合物以获得粗己内酰胺，其包括c）将粗己内酰胺加入到蒸馏装置中，通过顶部获得第一子流作为产物，通过底部通过设置第二子流，通过将蒸馏中的压力设定为使得 底部温度不低于170℃，并且调节第二子流，使得第二子流的己内酰胺含量基于整个第二子流不小于10重量％。

    Process for purifying caprolactam
    88.
    发明申请
    Process for purifying caprolactam 失效
    己内酰胺纯化方法

    公开(公告)号：US20070060750A1

    公开(公告)日：2007-03-15

    申请号：US10565774

    申请日：2004-07-16

    Applicant: Joannes Albertus Wilhelmus Lemmens ,  Theodorus Smeets ,  Paul Brandts ,  Koen Ceyssens

    Inventor： Joannes Albertus Wilhelmus Lemmens ,  Theodorus Smeets ,  Paul Brandts ,  Koen Ceyssens

    IPC: C07D201/16

    CPC classification number: C07D201/16

    Abstract: The invention relates to a process for purifying caprolactam, said process comprising (a) subjecting the caprolactam to a hydrogenation by treating the caprolactam with hydrogen in the presence of a heterogeneous nickel containing hydrogenation catalyst, (b) distilling at least a portion of the hydrogenated caprolactam in a distillation column containing nickel in an amount sufficiently low such that ΔPANNi≦3, wherein ΔPANNi=ΔPAN=ΔPANNi=0, ΔPAN=increase of the PAN number of caprolactam during distilling, ΔPANNi=0 increase of the PAN number of caprolactam during distilling under the same conditions in a distillation column free of nickel. Nickel is removed from the caprolactam solution prior to the distillation step.

    Abstract translation: 本发明涉及一种纯化己内酰胺的方法，所述方法包括（a）在非均相含镍氢化催化剂存在下，用氢处理己内酰胺进行氢化，（b）蒸馏至少一部分氢化 己内酰胺在含有足够低的量的镍的蒸馏塔中，使得ΔPANNiN = 3，其中ΔPANNi=ΔPAN=ΔPANNi = 0 ，DeltaPAN =蒸馏期间己内酰胺的PAN值的增加，在不含镍的蒸馏塔中在相同条件下蒸馏期间PAN己内酰胺的PAN数量的增加。 在蒸馏步骤之前，将镍从己内酰胺溶液中除去。

Patent Agency Ranking