Process for producing C
A process for producing a reaction mixture comprising a plurality of C 3 chlorinated alkane isomers comprising chlorinating a C 3 chlorinated alkane starting material in a chlorination zone to produce the plurality of C 3 chlorinated alkane isomers, the plurality of C 3 chlorinated alkane isomers each having at least one more chlorine atom than the C 3 chlorinated alkane starting material, wherein the concentration of the C 3 chlorinated alkane starting material is controlled such that conversion of the C 3 chlorinated alkane starting material to the plurality of C 3 chlorinated alkane isomers, represented by the molar ratio of the C 3 chlorinated alkane starting material:C 3 chlorinated alkane isomers in the reaction mixture present in the chlorination zone, does not exceed about 40:60.
1. A process for producing 1,1,3,3-tetrachloropropene comprising:
providing a mixture comprising C 3 chlorinated alkane isomers 1,1,1,3,3-pentachloropropane and 1,1,1,2,3-pentachloropropane in a molar ratio of from 80:20 to 95:5, subjecting the mixture to a selective dehydrochlorination step in a dehydrochlorination zone in which 1,1,1,3,3-pentachloropropane is selectively converted to 1,1,3,3-tetrachloropropene without substantial dehydrochlorination of 1,1,1,2,3-pentachloropropane,
wherein some or all surfaces of the dehydrochlorination zone in which the process is carried out, which a stream comprising at least 50% of 1,1,3,3-tetrachloropropene will contact during dehydrochlorination, have an iron content of about 20% or less and/or are formed from non-metallic materials and/or plastic materials.
2. The process of claim 1 , wherein said non-metallic materials are selected from the group consisting of enamel, glass, impregnated graphite, and silicon carbide.
3. The process of claim 2 , wherein said impregnated graphite is graphite impregnated with phenolic resin.
4. The process of claim 1 , wherein said plastic materials are selected from the group consisting of polytetrafluoroethylene, perfluoroalkoxy, and polyvinylidene fluoride.