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    • 7. 发明专利
    • Method for producing substantially pure propylene oxide
    • 生产大量丙烯氧化物的方法
    • JP2013173797A
    • 2013-09-05
    • JP2013118813
    • 2013-06-05
    • Sumitomo Chemical Co Ltd住友化学株式会社
    • HATANO AKIRA
    • C07D301/32C07B61/00C07D301/08
    • PROBLEM TO BE SOLVED: To provide a method for producing substantially pure propylene oxide by perfectly or substantially removing propionaldehyde.SOLUTION: A method for producing substantially pure propylene oxide includes the steps of: bringing an extractant composed of an organic compound which is liquid under an extractive distillation condition into contact with propionaldehyde-containing propylene oxide; and subjecting a mixture obtained in the above step to extractive distillation in a distillation tower in an operation condition such that the propylene oxide with a substantially reduced propionaldehyde content is recovered through the overhead of the distillation tower in a form of gas without substantially containing the extractant. The extractant is composed of a carbon atom, hydrogen atom and oxygen atom (A); is miscible with acetaldehyde and propylene oxide but substantially inactive to propylene oxide in the extractive distillation condition (B); and has a boiling point of 65-200°C under atmospheric pressure (C).
    • 要解决的问题:提供通过完全或基本上除去丙醛来生产基本上纯的环氧丙烷的方法。溶液:用于生产基本上纯的环氧丙烷的方法包括以下步骤:将由在 萃取蒸馏条件与含丙醛的环氧丙烷接触; 并在上述步骤中得到的混合物在蒸馏塔中进行萃取蒸馏,操作条件是使丙醛含量基本上降低的环氧丙烷通过蒸馏塔的塔顶馏出而不以基本上不含萃取剂的形式回收 。 萃取剂由碳原子,氢原子和氧原子(A)组成; 与乙醛和环氧丙烷混溶,但在萃取蒸馏条件(B)中基本上与环氧丙烷无活性; 并且在大气压(C)下沸点为65-200℃。
    • 8. 发明专利
    • Method for producing propylene oxide
    • 生产丙烯氧化物的方法
    • JP2013116924A
    • 2013-06-13
    • JP2013057934
    • 2013-03-21
    • Sumitomo Chemical Co Ltd住友化学株式会社
    • KAWABATA TOMONORIYAMAMOTO MORIOKITAURA TAKEAKIKNAPP CARLOS
    • C07D301/08C07D303/04
    • Y02P20/52
    • PROBLEM TO BE SOLVED: To provide a method to inhibit runaway reaction due to a highly active catalyst at the start-up of a fixed-bed type propylene oxide reactor.SOLUTION: This method for starting a fixed-bed type propylene oxide reactor containing a metallic catalyst carried on a carrier comprises following steps of: (a) heating the reactor at a temperature lower by 5-55°C than that in normal operation conditions; (b) passing a propylene-containing gas on the catalyst in the reactor at a flow rate of 5-40% of designed flow rate value; (c) adding an organic chlorine compound to the gas passing on the catalyst; (d) adding oxygen to the gas passing on the catalyst, and raising the reactor temperature and gas flow rate to the operating conditions.
    • 要解决的问题:提供一种在固定床型环氧丙烷反应器启动时抑制由于高活性催化剂引起的失控反应的方法。 解决方案:用于启动承载在载体上的含有金属催化剂的固定床型环氧丙烷反应器的方法包括以下步骤:(a)在比常温下低5-55℃的温度下加热反应器 操作条件; (b)以设计流量值的5-40%的流量将含丙烯气体在反应器中的催化剂上通过; (c)向通过催化剂的气体中加入有机氯化合物; (d)向通过催化剂的气体加入氧气,并将反应器温度和气体流量提高到操作条件。 版权所有(C)2013,JPO&INPIT