7 results about "Trifluoroiodomethane" patented technology

The present invention relates to a method for recovering unreacted iodine using an unreacted iodine recovery device comprising: a gas quenching device comprising a hollow cooling body into which a reaction gas mixture containing iodine (I2) discharged from a trifluoroiodmethane (CF3I) manufacturing process by the reaction of trifluoromethane (CF3H) and iodine (I2) is supplied to one side of the upper portion, and a first injection unit into which cooling water is sprayed from the upper portion of the cooling body; and a filtration device comprising a hollow filtration body having a filter with a plurality of through holes formed in the lower portion of the gas quenching device, and a second injection unit into which cleaning water is sprayed from the upper portion. A cooling step in which a high-temperature reaction gas mixture is supplied to the above-mentioned cooling body and cooling water is sprayed from the first injection part to cool the reaction gas mixture and gaseous iodine (I2) is precipitated, and The above aqueous solution and solid iodine (I2) flow into a filtration device and undergo a filtration step in which the aqueous solution and iodine (I2) are separated by a filter, and The present invention relates to a method for recovering unreacted iodine, characterized in that the iodine (I2) filtered by the above filter is cleaned by spraying cleaning water from a second spraying unit.

This invention discloses a method for producing trifluoroiodomethane (CF3I), the method comprising: providing a feedstock containing trifluoroacetyl iodide (TFAI); passing the feedstock through at least one tower loaded with carbon-containing material to remove hydrogen iodide (HI), hydrogen triiodide (HI3), and iodine (I2) from the feedstock; and providing the feedstock to a reactor to produce a trifluoroiodomethane product stream. Another method for producing trifluoroiodomethane (CF3I) comprises: providing a feedstock containing trifluoroacetyl iodide (TFAI) to a reactor to produce a trifluoroiodomethane product stream; and passing the trifluoroiodomethane product stream from the reactor through at least one tower loaded with carbon-containing material to remove hydrogen iodide (HI), hydrogen triiodide (HI3), and iodine (I2) from the trifluoroiodomethane product stream.

This invention discloses a method for removing impurities such as sulfur dioxide (SO2) from trifluoroacetyl chloride (TFAC) by distillation, adsorption, or a combination thereof, and / or by forming an azeotropic or azeotropic composition comprising effective amounts of sulfur dioxide (SO2) and trifluoroacetyl chloride (TFAC). The thus purified trifluoroacetyl chloride (TFAC) can then be used to prepare trifluoroiodomethane (CF3I). Azeotropic and azeotropic compositions of sulfur dioxide (SO2) and trifluoroacetyl chloride (TFAC) are also disclosed.

The application discloses a recovery system and recovery method for iodine in trifluoroiodomethane production, and the recovery system comprises a heating device, a condensing device, an alkali washing device and a washing device, wherein the heating device is provided with a gas inlet for receiving trifluoroiodomethane production tail gas; the condensing device is communicated with the heating device; the alkali washing device is communicated with the heating device; the washing device is communicated with the condensing device and the alkali washing device; a pipeline assembly comprises a liquid-phase pipeline and a gas-phase pipeline, the liquid-phase pipeline is communicated with the bottom of the heating device and the condensing device, and the gas-phase pipeline is communicated with the top of the heating device and the alkali washing device; a switching assembly comprises a first switching piece and a second switching piece, the first switching piece is arranged on the gas-phase pipeline to open or close the gas-phase pipeline, and the second switching piece is arranged on the liquid-phase pipeline to open or close the liquid-phase pipeline. The alkali washing device is used for removing HF in the tail gas, the condensing device is used for recovering iodine, and the washing device is used for removing trace iodine vapor, so that the iodine can be recovered, the consumption of iodine is greatly reduced, and the operation is simple and good in effect.

Impurities such as sulfur dioxide (SO2) are removed from trifluoroacetyl chloride (TFAC) through distillation, adsorption, or a combination thereof, and / or including the formation of an azeotrope or azeotrope-like composition including effective amounts of sulfur dioxide (SO2) and trifluoroacetyl chloride (TFAC). The trifluoroacetyl chloride (TFAC) thus purified may then be used in the manufacture of trifluoroiodomethane (CF3I). Also disclosed are azeotropes and azeotrope like compositions of sulfur dioxide (SO2) and trifluoroacetyl chloride (TFAC).

A method of producing trifluoroiodomethane (CF3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI), passing the feedstock through at least one column loaded with a carbon-containing material to remove hydrogen iodide (HI), hydrogen triiodide (HI3), and iodine (I2) from the feedstock, and providing the feedstock to a reactor to produce a trifluoroiodomethane product stream. Another method of producing trifluoroiodomethane (CF3I) includes providing a feedstock comprising trifluoroacetyl iodide (TFAI) to a reactor to produce a trifluoroiodomethane product stream, and passing the trifluoroiodomethane product stream from the reactor through at least one column loaded with a carbon-containing material to remove hydrogen iodide (HI), hydrogen triiodide (HI3), and iodine (I2) from the trifluoroiodomethane product stream.

This description provides a process for producing trifluoroiodomethane (CF3I). The process includes supplying vapor-phase reactants, including trifluoroacetyl halide, hydrogen, and iodine; heating the vapor-phase reactants; and reacting the heated vapor-phase reactants in the presence of a catalyst to produce trifluoroiodomethane. The catalyst is a transition metal.