Method for producing propylene glycol butyl ether and dipropylene glycol butyl ether (Chinesisch)

2018
  • Patent  /  Elektronische Ressource

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The invention provides a method for producing propylene glycol butyl ether and dipropylene glycol butyl ether and relates to the technical field of chemical synthesis. According to the method disclosed by the scheme of the invention, n-butyl alcohol and epoxy propane are utilized as raw materials, synthetic reaction is performed in a tubular fixed bed under the action of heterogeneous solid base catalyst, then unreacted n-butyl alcohol distillate is obtained through primary distillation, propylene glycol butyl ether distillate is obtained through secondary distillation, and dipropylene glycolbutyl ether distillate is obtained through third distillation. When the method is utilized, a lot of propylene glycol butyl ether and dipropylene glycol butyl ether can be produced; furthermore, the problems of serious equipment corrosion, more generated byproducts, large environmental protection pressure, high energy waste, low yield and the like are solved.

本发明提供了种生产丙二醇丁醚和二丙二醇丁醚的方法,涉及化工合成技术领域,本方案以正丁醇和环氧丙烷为原料,在非均相固体碱催化剂作用下于管式固定床中进行合成反应,然后再经过第次蒸馏得到未反应的正丁醇馏分,再经过二次蒸馏得丙二醇丁醚馏分,以及第三次蒸馏得到二丙二醇丁醚馏分。利用该方法能够大量生产丙二醇丁醚和二丙二醇丁醚,且可以解决腐蚀设备严重、生成副产物多、环保压力大、能源浪费高、产率低等问题。

  • Titel:
    Method for producing propylene glycol butyl ether and dipropylene glycol butyl ether
  • Weitere Titelangaben:
    种生产丙二醇丁醚和二丙二醇丁醚的方法
  • Patentnummer:
    CN108373402
  • Anmeldedatum:
    2018-03-20
  • Patentanmelder:
  • Patentfamilie:
  • Autor / Urheber:
  • Verlag:
    Europäisches Patentamt
  • Erscheinungsjahr:
    2018
  • Medientyp:
    Patent
  • Format:
    Elektronische Ressource
  • Sprache:
    Chinesisch
  • Klassifikation:
    IPC:    C07C Acyclische oder carbocyclische Verbindungen, ACYCLIC OR CARBOCYCLIC COMPOUNDS
  • Datenquelle:
    Europäisches Patentamt

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