公开(公告)号：EP0799079A4

公开(公告)日：1998-03-18

申请号：EP95944504

申请日：1995-12-19

申请人： COMMODORE LAB INC

发明人： ABEL MARC W ,  MOUK ROBERT W ,  HEYDUCK ALAN F ,  ABEL ALBERT E

IPC分类号： A62D3/00 ,  A62D3/34 ,  A62D3/35 ,  A62D3/36 ,  A62D101/22 ,  A62D101/26 ,  A62D101/45 ,  B01J19/00 ,  C07C17/23 ,  C07C17/395 ,  C09K5/04 ,  A63D3/00

CPC分类号： A62D3/34 ,  A62D3/35 ,  A62D3/36 ,  A62D2101/22 ,  A62D2101/45 ,  A62D2203/02 ,  C07C17/23 ,  C07C17/395 ,  C09K5/044

摘要： Ozone depleting fluorocarbon compounds (18) are dehalogenated through more economic reduction reaction with solvated electrons formed from lower equivalents of reactive metals (14) than previously used by reacting the partial reduction products with nitrogen-containing bases, such as ammonia (12) or alternatively, without any reactive metal by reacting with the base alone. Mixtures of fluorocarbon refrigerants including difficult-to-separate azeotropes of dichlorodifluoromethane contaminated with clorodifluoromethane are reclaimed by treating only with weak non-aqueous nitrogen-containing bases to provide essentially chemically pure dichlorodifluoromethanerefrigerant suitable for recycling/reuse. Hazardous cyanides which may develop are converted to relatively benign products during the process by introducing a base (22) to convert volatile cyanides to more stable salts which in turn are converted to useful compounds of lesser toxicity.

摘要翻译： 消耗臭氧的碳氟化合物通过更多的经济还原反应被脱卤反应，与由反应性金属的较低当量形成的溶剂化电子比先前通过使部分还原产物与含氮碱（例如氨）反应所使用，或者通过与 单独的基地。 包括难以分离被二氯二氟甲烷污染的氯代二氟甲烷共沸物的氟碳制冷剂的混合物只能用弱的非水性含氮碱处理，以提供基本上化学纯的二氯二氟甲烷制冷剂，适用于再循环/再利用。 通过引入碱将挥发性氰化物转化为更稳定的盐，而这些盐转化成毒性较小的有用化合物，可能会在生产过程中将有害的氰化物转化成相对良性的产物。