A procedure for liquid phase dehydrohalogenation of 1,2,3-tetracloropropan to obtain 1,2,3-tricloropropene. (Machine-translation by Google Translate, not legally binding)

摘要

A procedure for the liquid phase dehydrogenation of 1,2,2,3-tetrachloropropane to obtain 1,2,3-trichloropropene, comprising: (A) introducing a stream comprising 1,2,3-trichloropropane into a chlorinator in liquid phase; (B) chlorinate the feed stream so that from about 20 to about 60 weight percent of the gilt effluent remains unreacted 1,2,3-trichloropropane; (C) passing the effluent from the dorador to a fractionation column; (D) fractionating said dorado effluent into a 1,2,3-trichloropropane fraction, a 1,2,2,3-tetra-chloropropane fraction, a 1,1,2,3-tetrachloropropane fraction, a fraction of 1,1,1,2,3- and 1,1,2,2,3-pentachloropropanes and a fraction of 1,1,2,3,3-pentachloropropane and heavy ends; (E) (1) recirculate the 1,2,3-trichloropropane fraction to the gild; (2) separating the 1,2,2,3-tetrachloropropane fraction; (3) (a) passing the 1,1,2,3-tetrachloropropane fraction from the fractionation column to a caustic dehydrochlorinator; (b) dehydrochloride 1,1,2,3-tetrachloropropane; (c) passing the effluent from the dehydrochlorinator, which includes mixed trichloropropenes, to a second liquid phase gilder; (d) add chlorine to the carbon/carbon double bond of the trichloropropenes contained in the dehydrochlorinator effluent; (e) pause the effluent from the second browner to a second caustic dehydrochlorinator; (4) passing the fraction of 1,1,1,2,3- and 1,1,2,2,3-pentachloropropanes from the fractionation column to the second caustic dehydrochlorinator; (f) dehydrochlorinating the effluent from the second dorado and the fraction of 1,1,1,2,3- and 1,1,2,2,3-pentachloropropanes from the fractionation column; (g) passing the effluent from the second dehydrochlorinator, comprising mixed mixed tetrachloropropenes, to an isomerizer filled with siliceous granules having a polar surface; and (H) isomerizing 2,3,3,3-tetrachloropropene to 1,1,2,3-tetrachloropropene, by heating the effluent from the second dehydrochlorinator in contact with the siliceous granules, at a temperature of approximately 150ºC to approximately 200ºC, during from about 0.4 to about 2 hours. (Machine-translation by Google Translate, not legally binding)