Methods for separation of azeotrope or azeotrope-like compositions of trifluoroiodomethane (CF3I) and trifluoroacetyl chloride (CF3COCI)
AssigneeHoneywell International Inc.
InventorsHaluk Kopkalli, Joshua Close, Pramod K W Harikumar Warrier, Daniel C. Merkel
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Abstract
The present disclosure provides azeotrope or azeotrope-like compositions including trifluoroiodomethane (CF3I) and trifluoroacetyl chloride (CF3COCl), methods of forming same, and methods of separating, or breaking, the azeotrope or azeotrope-like compositions of trifluoroiodomethane (CF3I) and trifluoroacetyl chloride (CF3COCl).
Claims18
A method of breaking an azeotrope or azeotrope-like composition comprising trifluoroiodomethane (CF3I) and trifluoroacetyl chloride (CF3COCl), comprising:
- contacting the azeotrope or azeotrope-like composition with a solvent that selectively absorbs the trifluoroiodomethane (CF3I);
- extracting the trifluoroiodomethane (CF3I) into the solvent to form a first composition comprising the solvent and the trifluoroiodomethane (CF3I) and a second composition comprising the trifluoroacetyl chloride (CF3COCl);
- and
- separating the first and second compositions.
A method of separating the components of an azeotrope or azeotrope-like composition comprising trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I) comprising:
- contacting, within an extractive distillation column, the azeotrope or azeotrope-like composition with a solvent that selectively absorbs the trifluoroiodomethane (CF3I) to form a first composition including the solvent and trifluoroiodomethane (CF3I) and a second composition comprising trifluoroacetyl chloride (CF3COCl);
- and
- distilling the first and second compositions to provide a first distillate comprising trifluoroacetyl chloride (CF3COCl) and a first bottoms product comprising the solvent and trifluoroiodomethane (CF3I).
Dependencies are inferred from the claim text.