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US 12,759,893 B2Granted
Recovery of chlorine from hydrogen chloride generated in carbochlorination processes
AssigneeKronos International, Inc.
InventorsThomas Pierau, Mitja Medved
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Abstract
The invention relates to a method for recovering chlorine from hydrogen chloride generated in carbochlorination processes. Further, the invention refers to the use of this method for recovering chlorine from hydrogen chloride generated in a carbochlorination process.
Claims19
A method for recovering chlorine from a carbochlorination process, the method comprising:
- a) contacting carbonaceous material and chlorine with a metal-bearing feedstock comprising iron to obtain a chloride mixture comprising iron chloride and metal chlorides,
- b) separating the iron chloride from the chloride mixture,
- c) subjecting the iron chloride to a hydrolysis step to obtain hydrogen chloride,
- d) converting at least a portion of the obtained hydrogen chloride into chlorine, and optionally
- e) using at least a portion of the chlorine obtained in step d) in step a);
- wherein the method is used in connection with a carbochlorination process.
3 more elements
Dependencies are inferred from the claim text.