会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 3. 发明申请
    • PROCESS AND APPARATUS FOR PRODUCING AND PURIFYING EPICHLOROHYDRINS
    • 生产和净化二氢氯仿的方法和装置
    • WO2009108419A1
    • 2009-09-03
    • PCT/US2009/031630
    • 2009-01-22
    • DOW GLOBAL TECHNOLOGIES INC.KNEUPPER, Christian, D.BASILE, Perry, S.FAN, William, W.NOORMANN, Sascha
    • KNEUPPER, Christian, D.BASILE, Perry, S.FAN, William, W.NOORMANN, Sascha
    • C07D301/12
    • C07D301/12C07D301/32
    • A process and apparatus are disclosed for the purification of epichlorohydrin. The process includes distilling and/or fractionating a feed stream containing epichlorohydrin, dichlorohydrin(s), and one or more other substances, subjecting at least a portion of the liquid phase effluent to a dichlorohydrin dehydrochlorination process for converting residual dichlorohydrin(s) in the liquid phase effluent to epichlorohydrin, and recovering purified epichlorohydrin from the vapor phase effluent in which the distillation/fractionation pressure and/or temperature of step (1) is adjusted to retain at least 5 weight-percent epichlorohydrin in the liquid phase effluent. The apparatus for making purified epichlorohydrin includes a dehydrochlorination apparatus, a first liquid-vapor contacting apparatus, and a second liquid-vapor contacting apparatus connected to the dehydrochlorination apparatus for recycling a distillate to the dehydrochlorination apparatus. Advantages include more efficient recovery of epichlorohydrins and reduced capital investment in recovery equipment.
    • 公开了用于纯化表氯醇的方法和装置。 该方法包括蒸馏和/或分馏含有表氯醇,二氯丙醇和一种或多种其它物质的进料流,将至少一部分液相流出物进行二氯丙醇脱氯化氢处理,以将残留的二氯丙醇 液相流出物至表氯醇,并从气相流出物回收纯化的表氯醇,其中调节步骤(1)的蒸馏/分馏分压和/或温度以在液相流出物中保留至少5重量%的表氯醇。 用于制备纯化的表氯醇的装置包括脱氯化氢装置,第一液 - 蒸气接触装置和连接到脱氯化氢装置的第二液 - 蒸气接触装置,用于将馏出物再循环到脱氯化氢装置。 优点包括更有效地回收表氯醇,减少回收设备的资金投入。