Azeotrope or azeotrope-like compositions of trifluoroiodomethane (CF3I) and trifluoroacetyl chloride (CF3COCI)
AssigneeHoneywell International Inc.
InventorsHang T. Pham, Ryan J. Hulse, Rajiv Ratna Singh, Haridasan K. Nair
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Abstract
The present disclosure provides azeotrope or azeotrope-like compositions including trifluoroiodomethane (CF3I) and trifluoroacetyl chloride (CF3COCl), and a method of forming an azeotrope or azeotrope-like composition comprising the step of combining trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I) to form an azeotrope or azeotrope-like composition.
Claims19
A composition comprising an azeotrope or azeotrope-like composition consisting essentially of effective amounts of trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I).
A method of separating an azeotrope or azeotrope-like mixture of trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I), comprising:
- conveying a feed stream comprising an azeotrope or azeotrope-like composition consisting essentially of effective amounts of trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I) to a low-pressure column to provide a first bottoms product and a first distillate;
- collecting the first bottoms product from the low-pressure column;
- conveying the first distillate from the low-pressure column to a high-pressure column, the first distillate comprising an azeotrope or azeotrope-like composition consisting essentially of effective amounts of trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I);
- and
- collecting a second bottoms product from the high-pressure column.
A method of separating trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I) from a primary composition comprising trifluoroacetyl chloride (CF3COCl), trifluoroiodomethane (CF3I) and at least one impurity, comprising the steps of:
- forming, within the primary composition, a secondary composition which is an azeotrope or azeotrope-like composition consisting essentially of effective amounts of trifluoroacetyl chloride (CF3COCl) and trifluoroiodomethane (CF3I) having a boiling point between about −46.0° C. and about 90.0° C. at a pressure of between about 4.9 psia and about 348 psia;
- and
- separating the secondary composition from the primary composition and the at least one impurity.
Dependencies are inferred from the claim text.