Methods for solvation and removal of iodine (i2)-containing species
AssigneeHoneywell International Inc.
InventorsHaluk Kopkalli, Daniel C. Merkel, Haiyou Wang, Terris Yang, Richard Wilcox, Tao Wang, Jennifer W. McClaine, Gavin Towler, Haridasan K. Nair
Life of this patent
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Abstract
The present disclosure provides a method of removing iodine (I2) and iodine-containing species from processes for producing trifluoroiodomethane (CF3I). The present disclosure further provides another method of removing iodine and iodine-containing species from trifluoroacetyl iodide (TFAI).
Claims15
A method for solvation and removal of an iodine (I2)-containing species comprising the following steps:
- providing a feedstock comprising trifluoroacetyl iodide (TFAI) and the iodine (I2)-containing species;
- adding a solvent to the feedstock stream to provide a mixture comprising the solvent, trifluoroacetyl iodide (TFAI) and the iodine (I2)-containing species;
- and
- passing the mixture to one or more columns to obtain a purified stream comprising trifluoroacetyl iodide (TFAI).
A method of removing iodine (I2) from a stream comprising trifluoroacetyl iodide (TFAI), and at least an iodine (I2)-containing species selected from iodine (I2) and HI3, the method comprising:
- providing a feed stream, a solvent, and at least an iodine (I2)-containing species selected from iodine (I2) and HI3;
- and
- passing the feed stream to one or more columns to provide a purified trifluoroacetyl iodide (TFAI) product stream.
A method for removing iodine (I2) from trifluoroacetyl iodide (TFAI), the method comprising:
- adding a third component to a mixture of iodine (I2) and trifluoroacetyl iodide (TFAI), wherein the third component is immiscible or nearly immiscible with iodine;
- heating the mixture to melt the iodine (I2);
- allowing the mixture to settle into two layers;
- and
- separating the layers into a top and bottom layer;
- wherein the top layer comprises trifluoroacetyl iodide (TFAI) and the bottom layer comprises liquid iodine (I2).
Dependencies are inferred from the claim text.