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    • 1. 发明授权
    • Method and apparatus for the production of alkylene carbonate
    • 用于生产碳酸亚烷基酯的方法和装置
    • US5440004A
    • 1995-08-08
    • US238743
    • 1994-05-05
    • Masaharu DoyaYutaka KanbaraKen-ichi KimizukaTakashi Okawa
    • Masaharu DoyaYutaka KanbaraKen-ichi KimizukaTakashi Okawa
    • C07D317/36C08G64/00
    • C07D317/36
    • A method for the production of an alkylene carbonate at high yields and high selectivity by a reaction between an alkylene glycol and urea, the method being capable to preventing the deposition of a white crystal in the reflux condenser used in a conventional method for the production of alkylene carbonate and the subsequent decrease in the yield, wherein:a gas washing member and a cooling member are disposed above a reaction portion where alkylene glycol and urea are allowed to react,ammonia-containing steam exhausted from the reaction portion is downwardly introduced into the cooling member through the gas washing member,condensate and ammonia gas exhausted from a bottom of the cooling member are gas-liquid separated,the condensate is introduced into the gas washing member, andthe ammonia gas is removed from the reaction system.
    • 一种通过亚烷基二醇和尿素之间的反应以高产率和高选择性生产碳酸亚烷基酯的方法,该方法能够防止白色结晶沉积在用于生产 碳酸亚烷基酯和随后的产率降低,其中:气体洗涤部件和冷却部件设置在使亚烷基二醇和尿素反应的反应部分上方,从反应部分排出的含氨蒸气被向下引入 通过气体洗涤部件的冷却部件,从冷却部件的底部排出的冷凝物和氨气体被气液分离,将冷凝物引入到气体洗涤部件中,从反应体系中除去氨气。