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    Process for the purification of acetone
    3.
    发明公开
    Process for the purification of acetone 失效
    Verfahren zur Reinigung von Aceton

    公开(公告)号：EP0767160A1

    公开(公告)日：1997-04-09

    申请号：EP96114605.7

    申请日：1996-09-12

    申请人： ENICHEM S.p.A.

    发明人： Lorenzoni, Loreno ,  Simula, Salvatore ,  Messina, Giuseppe ,  Mansani, Riccardo

    IPC分类号： C07C45/53 ,  C07C45/83 ,  C07C49/08

    CPC分类号： C07C45/83 ,  C07C49/08

    摘要： The present invention relates to a process for the purification of raw acetone deriving from processes for the production of phenol acetone, impurity mainly due to cumene, water, aldehydes and methanol, which comprises:

    feeding the stream of raw acetone coming from the primary fractionation of a plant for the production of phenol/acetone to a first distillation column to which a solution of sodium hydroxide at 2% is also fed;
    sending the stream at the head of the first column, consisting of acetone, water and cumene to a second column to which the extractive solvent triethyleneglycol is also fed;
    recovering the practically anhydrous acetone from the head of the second column;
    feeding the bottom product of the second column, containing triethyleneglycol, water, cumene and acetone to a third distillation column in which an azeotropic mixture of water/cumene is recovered from the head and anhydrous triethyleneglycol from the tail;
    sending the azeotropic mixture of water/cumene to a decanter in which a water phase is separated, containing acetone, which is recycled to the first column and an organic phase, containing cumene and acetone, which is sent to the primary fractionation.

    摘要翻译： 本发明涉及一种用于生产丙酮丙酮衍生物的原料丙烷的纯化方法，主要是由于异丙基苯，水，醛和甲醇引起的杂质，该方法包括：将来自主分馏 用于将苯酚/丙酮生产到第二蒸馏塔的设备，其中还加入氢氧化钠溶液2％的溶液; 将由丙酮，水和异丙基苯组成的第一列的头部的料流送至萃取溶剂三乙二醇也供给的第二塔; 从第二塔的头部回收几乎无水的丙酮; 将含有三乙二醇，水，异丙基苯和丙酮的第二塔的底部产物进料到第三蒸馏塔中，其中从头部回收水/枯烯的共沸混合物和来自尾部的无水三乙二醇; 将水/异丙基苯的共沸混合物送入其中分离水相的含水丙酮的滗析器，该丙酮循环至第一塔，并含有含有异丙基苯和丙酮的有机相，送入初级分馏。

    PROCESS FOR SEPARATING A MIXTURE COMPRISING CYCLOHEXANONE AND PHENOL
    7.
    发明公开
    PROCESS FOR SEPARATING A MIXTURE COMPRISING CYCLOHEXANONE AND PHENOL 审中-公开
    VERFAHREN ZUR TRENNUNG EINES GEMISCHS AUS CYCLOHEXANON UND PHENOL

    公开(公告)号：EP2844628A1

    公开(公告)日：2015-03-11

    申请号：EP13717144.3

    申请日：2013-04-09

    申请人： ExxonMobil Chemical Patents Inc.

    发明人： KUECHLER, Keith, H. ,  BENITEZ, Francisco, M. ,  CHAVEZ, Krystle, J. ,  BECKER, Christopher, L. ,  HEIDMAN, John, L., Jr.

    IPC分类号： C07C37/08 ,  C07C37/80 ,  C07C45/53 ,  C07C45/83

    CPC分类号： C07C49/403 ,  B01D3/40 ,  C07C37/08 ,  C07C37/58 ,  C07C37/80 ,  C07C45/53 ,  C07C45/83 ,  C07C2601/14 ,  C07C39/04

    摘要： In a process for separating a mixture comprising cyclohexanone and phenol, at least a portion of the mixture is distilled in the presence of a solvent including at least two alcoholic hydroxyl groups attached to non-adjacent saturated carbon atoms, water, and in the presence or absence of a hemiketal defined by the formula (I) or the formula (II): wherein R
    1 , the same or different at each occurrence, is independently an alkylene group having from 2 to 10 carbon atoms, R
    2 is an alkylene group having from 4 to 10 carbon atoms and/or R
    3 is hydrogen or the following group: and in the presence or absence of an enol-ether derived from the hemiketal defined by the formula (I) or the formula (II), wherein the total concentration of the hemiketal and enol-ether, expressed in term of weight percentage of the total weight of the feed to the distilling step, is at most 0.01%.

    摘要翻译： 在分离包含环己酮和苯酚的混合物的方法中，至少一部分混合物在包含至少两个连接到非相邻饱和碳原子上的醇羟基的溶剂存在下蒸馏，水， 不存在由式（I）或式（II）定义的半缩酮化合物：其中每次出现相同或不同的R 1独立地为具有2至10个碳原子的亚烷基，R 2为具有4 至10个碳原子和/或R 3为氢或以下基团：并且在存在或不存在衍生自由式（I）或式（II）定义的半缩酮的烯醇 - 醚的情况下，其中， 半缩酮和烯醇醚，以蒸馏步骤的进料总重量的重量百分数表示，至多为0.01％。