Process for producing highly pure chlorinated alkane
AssigneeSpolek Pro Chemickou A Hutni Vyrobu A.S.
InventorsZdenek Ondrus, Pavel Kubicek, Karel Filas, Petr Sladek
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Abstract
Disclosed is a process for producing highly pure chlorinated alkane in which a chlorinated alkene is contacted with chlorine in a reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkene, and extracting a portion of the reaction mixture from the reaction zone, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the reaction mixture extracted from the reaction zone does not exceed 95:5.
Claims2
A method of synthesizing 1,1,2,3-tetrachloropropene, comprising:
- obtaining a feedstock of a 1,1,1,2,3-pentachloropropane composition by feeding a chlorinated alkene into a reaction zone;
- contacting the chlorinated alkene with chlorine in said reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkenea;
- extracting a portion of the reaction mixture from the reaction zone, thereby providing an extracted reaction mixture, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the extracted reaction mixture does not exceed 95:5,
- wherein the extracted reaction mixture comprises:
- the 1,1,1,2,3-pentachloropropane in amounts of at least 99.7%;
- oxygenated organic compounds in amounts of less than about 500 ppm;
- isomers of the C3-6 chlorinated alkane in amounts less than about 500 ppm;
- non-isomeric alkane impurities in amounts of less than about 500 ppm;
- chlorinated alkenes in amounts of less than about 500 ppm;
- water in amounts of less than about 500 ppm;
- inorganic compounds of chlorine in amounts of less than about 100 ppm;
- brominated organic compounds in amounts of less than about 100 ppm;
- and
- iron in amounts of less than about 100 ppm;
- and
- contacting the 1,1,1,2,3-pentachloropropane composition with a metal catalyst in a dehydrochlorination zone in the liquid phase at a temperature of between about 60° C. to about 300° C.
A method of synthesizing 1,1,2,3-tetrachloropropene, comprising:
- obtaining a feedstock of a 1,1,1,2,3-pentachloropropane composition by feeding a chlorinated alkene into a reaction zone;
- contacting the chlorinated alkene with chlorine in said reaction zone to produce a reaction mixture containing the chlorinated alkane and the chlorinated alkenea;
- extracting a portion of the reaction mixture from the reaction zone, thereby providing an extracted reaction mixture, wherein the molar ratio of chlorinated alkane:chlorinated alkene in the extracted reaction mixture does not exceed 95:5,
- wherein the extracted reaction mixture comprises:
- the 1,1,1,2,3-pentachloropropane in amounts of at least 99.7%;
- oxygenated organic compounds in amounts of less than about 500 ppm;
- isomers of the C3-6 chlorinated alkane in amounts less than about 500 ppm;
- non-isomeric alkane impurities in amounts of less than about 500 ppm;
- chlorinated alkenes in amounts of less than about 500 ppm;
- water in amounts of less than about 500 ppm;
- inorganic compounds of chlorine in amounts of less than about 100 ppm;
- brominated organic compounds in amounts of less than about 100 ppm;
- and
- iron in amounts of less than about 100 ppm;
- and
- contacting the 1,1,1,2,3-pentachloropropane composition with a metal catalyst in a dehydrochlorination zone in the gaseous phase at a temperature of between about 300° C. to about 500° C.
Dependencies are inferred from the claim text.