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    UNIT AND PROCESS FOR PURIFICATION OF CRUDE METHYL METHACRYLATE
    1.
    发明申请
    UNIT AND PROCESS FOR PURIFICATION OF CRUDE METHYL METHACRYLATE 审中-公开
    用于纯化甲基丙烯酸甲酯的单元和方法

    公开(公告)号：WO2015055843A1

    公开(公告)日：2015-04-23

    申请号：PCT/EP2014/072367

    申请日：2014-10-17

    Applicant: ARKEMA FRANCE

    Inventor： BERNARDIN, Yves ,  BILLON, Romain ,  MARCARIAN, Xavier ,  VALLET, Florent

    IPC: C07C67/54 ,  B01D3/14 ,  C07C69/54

    CPC classification number: C07C51/44 ,  B01D3/143 ,  B01D3/34 ,  B01D11/0446 ,  C07C51/50 ,  C07C67/54 ,  C07C67/58 ,  C07C69/54

    Abstract: The invention relates to a purification unit (200) which is able to separate crude MMA from light and heavy impurities in order to obtain high quality of MMA, suitable to produce optimal grade polymethylmethacrylate (PMMA). The unit (200) comprises two distillation columns (210, 250) in series, fed with mixture to be distilled in their median part, in order to separate each column in two upper (213, 253) and lower (212, 252) parts, the first distillation column (210) being fed with crude prewashed MMA, and the second distillation column (250) being fed with distilled liquid stream containing MMA, separated from light impurities, issued from bottom of first distillation column (210). The upper part (213) of first distillation column (210) is connected to a lateral extraction system (220), able to minimize MMA content in light impurities flowing upward said first column (210).

    Abstract translation: 本发明涉及一种净化单元（200），其能够将粗MMA与轻重杂质分离，以获得高品质的MMA，适合于生产最佳级别的聚甲基丙烯酸甲酯（PMMA）。 单元（200）包括串联的两个蒸馏塔（210,250），在其中间部分中加入要蒸馏的混合物，以便将两个上部（213,253）和下部（212,252）部分分离 ，第一蒸馏塔（210）被供给粗制的预洗的MMA，并且第二蒸馏塔（250）从第一蒸馏塔（210）的底部发出的含有从轻质杂质分离的含有MMA的蒸馏液流。 第一蒸馏塔（210）的上部（213）连接到横向提取系统（220），能够最小化在第一塔（210）上向上流动的杂质中的MMA含量。

    ESTERIFICATION UNIT FOR PRODUCING CRUDE METHYL METHACRYLATE, ESTERIFICATION PROCESS USING SAID UNIT AND PLANT COMPRISING SAIS UNIT
    3.
    发明申请
    ESTERIFICATION UNIT FOR PRODUCING CRUDE METHYL METHACRYLATE, ESTERIFICATION PROCESS USING SAID UNIT AND PLANT COMPRISING SAIS UNIT 审中-公开
    用于生产甲基丙烯酸甲酯的制备单元，使用上述单元和包含SAIS单元的工厂的确定方法

    公开(公告)号：WO2015055842A1

    公开(公告)日：2015-04-23

    申请号：PCT/EP2014/072366

    申请日：2014-10-17

    Applicant: ARKEMA FRANCE

    Inventor： BERNARDIN, Yves ,  BILLON, Romain ,  MARCARIAN, Xavier ,  VALLET, Florent

    IPC: C07C67/20 ,  B01J19/18 ,  B01J19/24 ,  C07C69/54

    CPC classification number: C07C67/20 ,  B01J4/002 ,  B01J10/00 ,  B01J19/1862 ,  B01J19/2445 ,  B01J19/245 ,  B01J19/2465 ,  B01J2219/0004 ,  C07C69/54

    Abstract: The invention relates to an esterification unit (150) and esterification process for producing crude methyl methacrylate (MMA) from methacrylamide (MAM), which enable particularly to improve the yield, meaning that the organics spent acids are low; and at the same time, providing crude MMA with rather good quality, meaning that MMA concentration in crude MMA is rather high and preferably from 50wt% to 80wt%. According to the invention, the esterification unit comprises esterification reactors (1,..., 5 (or 6) set up in a serial way so that there is a counter current flow between gaseous phase and liquid phase, the liquid phase flowing from first reactor (1) of the series to last reactor (5 (or 6)), and the gaseous phase flowing from reactor to first reactor (1).

    Abstract translation: 本发明涉及由甲基丙烯酰胺（MAM）制备粗甲基丙烯酸甲酯（MMA）的酯化单元（150）和酯化方法，其特别可以提高产率，意味着有机废酸是低的; 同时提供质量较好的粗MMA，意味着MMA中的MMA浓度相当高，优选为50wt％至80wt％。 根据本发明，酯化单元包括以串联方式设置的酯化反应器（1，...，5（或6）），使得在气相和液相之间存在逆流流动，液相从第一 （5（或6））和从反应器流向第一反应器（1）的气相的反应器（1）。

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