Process for the production of chlorinated propenes

1. A process for the production of 1,1,2,3-tetrachloropropene from a feedstream comprising 1,2-dichloropropane, wherein the 1,2-dichloropropane is converted to one or more pentachloropropanes, wherein at least a portion of the pentachloropropanes produced by the process are catalytically dehydrochlorinated using at least one dehydrochlorination catalyst selected from the group consisting of aluminum chloride, antimony pentachloride, titanium tetrachloride, and a combination of these, wherein the pentachloropropanes comprise 1,1,1,2,2-pentachloropropane, and wherein the catalytic dehydrochlorination produces a stream comprising 1,1,2,3-tetrachloropropene and unreacted pentachloropropanes.

2. he process of claim 1 , wherein the total concentration of dehydrochlorination catalyst is less than 5 mole % of the total reaction mixture.

3. The process of claim 1 , further comprising at least one additional liquid phase dehydrochlorination conducted in the presence of chemical base.

4. The process of claim 3 , wherein the feedstream from the catalytic dehydrochlorination is provided to the liquid phase dehydrochlorination.

5. The process of claim 1 , wherein the catalyst is quenched by the product of the chemical base dehydrochlorination and removed from the product stream.

6. The process of claim 1 , wherein the feedstream further comprises 1,2,3-trichloropropane.

7. The process of claim 1 , wherein HCI is generated as byproduct(s).

8. The process of claim 7 , wherein HCI is recovered as anhydrous HCI.

9. The process of claim 3 , wherein the chemical base comprises caustic, potasium hydroxide, calcium hydroxide or a combination of these.

10. The process of claim 1 , wherein the product stream is quenched to reduce the dehydrochlorination catalyst.

11. The process of claim 10 wherein the quenched catalyst is removed from the product stream.