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    • 2. 发明公开
    • 테트라플루오로에틸렌과 헥사플루오로프로필렌의 동시제조방법
    • 四氢氟乙烯和十六氟丙烯共同制备方法
    • KR1020040036023A
    • 2004-04-30
    • KR1020020064777
    • 2002-10-23
    • 한국과학기술연구원
    • 문동주정정조이용준이상득안병성
    • C07C17/269
    • C07C17/269C07C21/185C07C21/18
    • PURPOSE: A method for co-preparation of tetrafluoroethylene(TFE) and hexafluoropropylene(HFP) is provided to obtain both monomers(TFE and HFP) useful in the fluororesin industries with high efficiency and high selectivity of HFP. CONSTITUTION: The method comprises the steps of: performing pyrolysis of difluorochloromethane(R22) pre-heated to 150-250 deg.C with overheated water steam at a temperature of 730-760 deg.C for 0.01-0.2 sec; and recycling the mixture of unreacted R22 and HFP, which is discharged after the pyrolysis, into the pyrolysis reactor(31), wherein the mole ratio of overheated water steam to R22, i.e., £H2O|/£R22|, and the mole ratio of HFP to R22, i.e., £HFP|/£R22|, at the inlet of the pyrolysis reactor, are controlled to 5-10 and 0.01-0.1, respectively.
    • 目的:提供四氟乙烯(TFE)和六氟丙烯(HFP)的共制备方法,以获得两种单体(TFE和HFP),其可用于高效率和高选择性的HFP的氟树脂工业中。 方法:该方法包括以下步骤:用730〜760℃的过热水蒸气预热至150-250℃的二氟氯甲烷(R22),进行0.01-0.2秒的热解; 并将在热解后排出的未反应的R22和HFP的混合物再循环到热解反应器(31)中,其中过热的水蒸汽与R22的摩尔比(即,H 2 O 2 | / R 22 |)和摩尔比 的HFP到R22,即在热解反应器入口处的HFP | /£R22 |分别被控制在5-10和0.01-0.1。