METHOD OF SEPARATING HIGH-PURITY PERFLUORO(BUTYLCYCLOHEXANE) BY HETEROAZEOTROPIC RECTIFICATION
	LUPACHEV E V; POLKOVNICHENKO A V; KVASHNIN S I
	2024-04-25
专利权人	FEDERAL STATE BUDGETARY INST (FSBI-C)
申请日期	2024-04-25
专利号	RU2830547-C1
成果简介	NOVELTY - Invention relates to organic chemistry and specifically to a method of extracting high-purity perfluoro(butylcyclohexane) from industrial mixtures of fluorinated cycloalkanes with 10 carbon atoms. Disclosed is a method of separating perfluoro(butylcyclohexane) from a mixture of perfluoro(butylcyclohexane) and perfluorodecalin by heteroazeotropic rectification in the presence of water. Process is carried out in a periodic mode on a packed rectification column. Initial mixture and water are loaded into the still of the column in mass ratio of 6:1 to 7:1, after which the heating of the still of the column is started and the column is brought into the operating mode and concentration of perfluorodecalin is carried out in the distillate in the mode of infinite reflux. Then distillate fractions are withdrawn in volume not exceeding dephlegmator retention volume at specified time intervals, which are determined by time of column entering into stationary mode, until mass of still residue with target fraction of perfluoro(butylcyclohexane) reaches value calculated by formula: where mst is mass of stillage residue, min is the weight of the initial mixture of perfluoro(butylcyclohexane) and perfluorodecalin, is the weight fraction of perfluoro(butylcyclohexane) in the initial mixture, is the weight fraction of perfluorodecalin in the initial mixture, is the weight fraction of perfluoro(butylcyclohexane) in the still residue, is the weight fraction of perfluorodecalin in the still residue, n is the number of separation stages in the column, and . USE - Organic chemistry. ADVANTAGE - Disclosed invention enables to extract high-purity perfluoro(butylcyclohexane) (not less than 99 wt.%) from a mixture of near-boiling fluorinated cycloalkanes with 10 carbon atoms – PFBCH and PFD. 3 cl, 4 ex
IPC 分类号	B01D-003/36 ; C07C-023/10
国家	俄罗斯
专业领域	化学化工
语种	英语
成果类型	专利
文献类型	科技成果
条目标识符	http://119.78.100.226:8889/handle/3KE4DYBR/16988
专题	中国科学院新疆生态与地理研究所
作者单位	FEDERAL STATE BUDGETARY INST (FSBI-C)
推荐引用方式 GB/T 7714	LUPACHEV E V,POLKOVNICHENKO A V,KVASHNIN S I. METHOD OF SEPARATING HIGH-PURITY PERFLUORO(BUTYLCYCLOHEXANE) BY HETEROAZEOTROPIC RECTIFICATION. RU2830547-C1[P]. 2024.

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