利索-全球专利检索

  1. 登录
  2. 注册

搜索结果

9 条记录 (耗时 0.009 秒)

    Process for the recovery of phenol from an aqueous stream containing Na2So4
    4.
    发明公开
    Process for the recovery of phenol from an aqueous stream containing Na2So4 失效
    Verfahren zur Gewinnung von Phenol aus einem Na2So4 enthaltendenwässrigenStrom

    公开(公告)号：EP0717024A1

    公开(公告)日：1996-06-19

    申请号：EP95118762.4

    申请日：1995-11-29

    申请人： ENICHEM S.p.A.

    发明人： Alessi, Vanni ,  Astori, Sabrina ,  Celin, Francesco ,  Gradella, Cecilia ,  Penzo, Renzo

    IPC分类号： C07C37/72 ,  C07C37/08 ,  C07C39/04

    CPC分类号： C07C37/72 ,  C07C39/04

    摘要： The invention relates to a process for the recovery of phenol dissolved in an aqueous stream of a plant for the production of phenol from cumene, containing Na₂SO₄ and various organic impurities which consists in the extraction of the phenol with a solvent and its subsequent recovery from the extracted product by distillation or re-extraction and is characterized in that the extraction of phenol from the aqueous stream is carried out in a multistep extractor, using a ratio extracted product/refined product of between 0.1 and 1 v/v and at a temperature of between 20°- 70°C.

    摘要翻译： 本发明涉及一种溶解在植物水溶液中的酚的方法，用于从含有Na 2 SO 4的异丙基苯和各种有机杂质生产苯酚，其中包括用溶剂萃取苯酚，随后从 通过蒸馏或再提取提取产物，其特征在于从水流中提取苯酚是在多步骤萃取器中进行的，使用0.1至1v / v的提取产物/精制产物的比例，在 20〜70℃

    Process for the extraction of the salts contained in the neutralized separated product obtained in the preparation of phenol by the oxidation of cumene
    6.
    发明公开
    Process for the extraction of the salts contained in the neutralized separated product obtained in the preparation of phenol by the oxidation of cumene 有权
    一种用于通过枯烯氧化提取生产苯酚的中和产物分离的的盐的过程

    公开(公告)号：EP0952136A1

    公开(公告)日：1999-10-27

    申请号：EP99106812.3

    申请日：1999-04-06

    申请人： Enichem S.p.A.

    发明人： Alessi, Vanni ,  Penzo, Renzo

    IPC分类号： C07C39/04 ,  C07C37/68

    CPC分类号： C07C37/685 ,  C07C37/72 ,  C07C37/74 ,  C07C39/04

    摘要： Process for the extraction of the salts contained in the neutralized separated product obtained in the preparation of phenol by the oxidation of cumene, wherein the flow-rate of the aqueous stream of the separation section of cumene hydroperoxide is reduced by substituting the stream of fresh water used for washing the neutralized separated product, generally obtained by the demineralization of well or running water, with process water taken from another section of the production plant.

    摘要翻译： 用于包含在中和盐的提取过程中分离产物得到在由枯烯的氧化制备苯酚，worin异丙苯过氧化氢的分离段的wässrige流的流量是通过代入的新鲜水的流减小 用于洗涤由井或流水脱盐得到的分离中和的产物，基因反弹，与来自生产工厂的另一部分截取的工艺水。

    Process for recovering phenol
    9.
    发明公开
    Process for recovering phenol 失效
    Verfahren zur Wiedergewinnung des Phenols。

    公开(公告)号：EP0372685A2

    公开(公告)日：1990-06-13

    申请号：EP89309183.5

    申请日：1989-09-11

    申请人： ENICHEM S.p.A.

    发明人： Penzo, Renzo ,  Reggiani, Paolo ,  Spaggiari, Claudio

    IPC分类号： C07C37/72 ,  C07C37/08

    CPC分类号： C07C37/72 ,  C07C39/04

    摘要： A process for recovering phenol from a rectification purge containing various organic impurities, which comprises subjecting said purge to an extraction operation, using, as an extracting solvent, an aqueous solution of an alkali metal phenate.

    摘要翻译： 一种从含有各种有机杂质的精馏吹扫中回收苯酚的方法，该方法包括使用作为萃取溶剂的碱金属酚盐水溶液对所述吹扫进行萃取操作。