Method of removing water from hydrofluorocarbon manufacturing processes
AssigneeHoneywell International Inc.
InventorsHsueh Sung Tung, Jason T. Stuck
Life of this patent
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Abstract
Disclosed are improved fluorination processes and fluorine-containing compositions which involve introducing to one or more fluorination process compositions a water reactive agent in an amount and under conditions effective to decrease the amount of water in that composition. The water reactive agent is preferably introduced to the fluorination process at a location downstream of the fluorination reaction, in amounts and under conditions effective to produce a relatively lower concentration of water in the composition, and preferably throughout the fluorination process.
Claims21
A method of removing water from a fluorination process comprising:
- a) providing at least one water reactive agent comprising a compound having the formula I:
- XR2 (I)
- where
- X is O═C or O═S, and
- each R is independently H, alkyl, or halogen, provided that at least one R is halogen
- b) providing in said fluorination process a composition containing a reactive organic compound, a fluorination agent and water;
- and
- c) introducing said water reactive agent into said composition under conditions effective to substantially reduce the concentration of water in said process.
A method of removing water from a fluorination process stream comprising:
- a) providing a process stream containing an organic compound, hydrogen fluoride, and water;
- b) introducing into said process stream a compound having the formula I:
- XR2 (I)
- where
- X is O═C or O═S, and
- each R is independently H, alkyl, or halogen, provided that at least one R is halogen;
- and
- c) reacting said compound with said water.
A method of making fluorinated organic compounds comprising the steps of:
- a.) reacting at least one organic reactive compound under conditions effective to fluorinate said organic reactive compound to produce a reaction effluent stream comprising water;
- and
- b.) introducing into said reaction effluent stream a water reactive agent comprising a compound having the formula I:
- XR2 (I)
- where
- X is OC or O═S, and
- each R is independently H, alkyl, or halogen, provided that at least one R is halogen said water reactive agent being effective under the conditions of said reaction effluent stream to remove at least a substantial portion of said water from said reaction effluent stream.
A method of removing water from a fluorination process of the type having a process stream containing a reactive organic compound, a fluorination agent and water, the method comprising introducing at least one water reactive agent selected from the group consisting of a compound containing a carbonyl group, a thionyl group and combinations of these into said process stream under conditions effective to substantially reduce the concentration of water in said process.
Dependencies are inferred from the claim text.