Photochlorination of chloroform to carbon tetrachloride
AssigneeOccidental Chemical Corporation
InventorsRobert L. Zeller, Darrell Hollis, Keith S. Kramer, Brian Calderwood, Rodney L. Klausmeyer
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Abstract
A method of producing carbon tetrachloride, the method comprising the step of reacting chlorine with chloroform in the presence of electromagnetic radiation within a reaction mixture that includes the chlorine, the chloroform, and carbon tetrachloride, where the concentration of chloroform is less than 5000 ppm by weight relative to the weight of the reaction mixture, where the reaction mixture includes at least stoichiometric levels of chlorine relative to chloroform, where the electromagnetic radiation creates chloride radicals, and where the reaction mixture is well mixed.
Claims6
A method of producing carbon tetrachloride, the method comprising steps of
- (i) providing a free radical mixture including chlorine gas, carbon tetrachloride, and chlorine free radicals;
- (ii) admixing the free radical mixture and a chloroform feed stream as a reaction mixture to thereby form an intermediate product stream including product carbon tetrachloride, excess chlorine, and byproduct hydrochloric acid;
- (iii) removing a portion of the excess chlorine and the byproduct hydrochloric acid from the intermediate product stream to thereby form a product carbon tetrachloride stream including the product carbon tetrachloride;
- and
- (iv) directly utilizing the product carbon tetrachloride stream as a reactant stream in a subsequent chemical synthesis without removing additional organic species from the product carbon tetrachloride stream.
Dependencies are inferred from the claim text.