Methods for recovering chlorinated hydrocarbons
AssigneeOccidental Chemical Corporation
InventorsJohn Lee Dawkins, Darrell G Hollis, Rodney L Klausmeyer, Keith S Kramer, Michael A Garmon
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Abstract
Processes for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane and ferric chloride. The processes may include deep distillation of the crude, treatment of the crude with a reagent that deactivates the ferric chloride followed by distillation on the deactivated crude stream, aqueous washing of the crude product stream to remove ferric chloride followed by distillation on the deactivated crude stream. Other embodiments simultaneously prepare 1,1,2,3-tetrachloroprene and 1,1,1,2,3-pentachloroprane.
Claims16
A process for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane, the process comprising:
- (a.) providing a crude product stream containing 1,1,1,2,3-pentachloropropane, where the crude product stream further includes ferric chloride;
- (b.) adding an inhibitor to the crude product stream to deactivate the ferric chloride, wherein the inhibitor is tributylphosphate, and wherein the amount of inhibitor added to the crude product stream is from about 0.5 moles to about 2.0 moles of inhibitor per mole of ferric chloride within the crude product stream.
A process for isolating 1,1,1,2,3-pentachloropropane from a crude product stream containing the 1,1,1,2,3-pentachloropropane, the process comprising:
- (a.) providing a crude product stream containing 1,1,1,2,3-pentachloropropane, where the crude product stream further includes at least 50 ppm ferric chloride;
- (b.) adding from about 0.5 moles to about 2 moles of tributylphosphate, per mole of ferric chloride within the crude product stream, to the crude product stream, wherein said step of adding deactivates the ferric chloride in the crude product stream.
A crude product composition comprising 1,1,1,2,3-pentachloropropane, at least 50 ppm ferric chloride, and from about 0.5 moles to about 2 moles of tributylphosphate, per mole of ferric chloride.
Dependencies are inferred from the claim text.