29 results about "Trifluoroiodomethane" patented technology

The invention provides a method and system for continuously preparing trifluoroiodomethane, and the method comprises the following steps in the same reactor: S1, inputting trifluoromethane, iodine vapor and air into the reactor, and reacting under the action of a catalyst to prepare trifluoroiodomethane; s2, when the reduction amplitude of the reaction yield relative to the initial reaction yield reaches a set threshold value, stopping inputting trifluoromethane and iodine vapor into the reactor, and continuously introducing air to regenerate the catalyst; and S3, after the regeneration of the catalyst is completed, repeatedly executing the steps S1 to S2. The preparation process of the mesoporous carrier used by the catalyst comprises the following steps: dispersing nano SiO2 spheres in a magnesium acetate or aluminum acetate solution, then adding an NH4F solution, and reacting under a stirring condition to obtain a mesoporous carrier precursor; and treating the mesoporous carrier precursor by adopting a solution etching method. According to the method for continuously preparing trifluoroiodomethane, the service life of the catalyst is long, the technological process is simple and efficient, and the regeneration difficulty of the catalyst is reduced.

The refrigerator oil according to an exemplary embodiment of the present disclosure includes a silane compound including at least one of a glycidyl group or an isocyanate group. A heat pump according to an exemplary embodiment of the present disclosure comprises: a heat exchanger comprising a heat exchanger comprising trifluoroiodomethane; r-13I1), and a refrigerant of R-13I1); and the refrigerating machine oil. The chemical stability of the refrigerator oil according to the present disclosure at high temperature and / or high pressure can be improved.

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.

A refrigeration oil according to exemplary embodiments of the present disclosure comprises a silane compound containing at least one of a glycidyl group or an isocyanate group. A heat pump according to exemplary embodiments of the present disclosure comprises a refrigerant including trifluoroiodomethane (R-131I1) and the refrigeration oil.

The invention aims to provide a fire extinguishing agent or a fire retardant capable of being used for extensive fire disasters or preventing fire disasters, and belongs to the technical field of refrigeration heat pumps and the technical field of fire fighting, and the fire extinguishing agent or the fire retardant is composed of hexafluoropropylene, trifluoroiodomethane and 1, 1, 1, 2, 3, 3, 4-hexafluoropropylene. The novel mixed flame retardant is prepared from two or three components in 1, 1, 1, 3, 3, 3-heptafluoropropane by using a conventional physical mixing method. The flame retardant disclosed by the invention not only has excellent flame-retardant and fire-extinguishing effects, but also has excellent environmental protection performance, can be used as a novel mixed working medium component in a thermodynamic system, and has good cycle performance. In conclusion, the method has very good application effect and development potential.

A refrigerator oil according to exemplary embodiments of the present disclosure includes an amine-based phosphate compound. A heat pump according to exemplary embodiments of the present disclosure includes a refrigerant including trifluoroiodomethane (R-131I1) and the refrigerator oil.

The present invention relates to a refrigerant composition for an air conditioning device, the composition having characteristics similar to those of R410A, having a sufficiently low global warming coefficient (GWP), and comprising 1,1-difluoroethene (R1132a) and trifluoroiodomethane (R13I1).

To provide compositions and methods that may be used to prepare iodide-containing compounds, such as trifluoroiodomethane, of high purity.SOLUTION: Provided is a composition comprising an azeotropic or azeotrope-like composition, comprising 0.5 wt.% to 35.5 wt.% of trifluoroacetyl chloride (CF3COCl) and 64.5 wt.% to 99.5 wt.% of trifluoroiodomethane (CF3I).SELECTED DRAWING: Figure 1

The present disclosure provides a method for purifying trifluoroiodomethane. The method includes providing a process stream comprising trifluoroiodomethane, organic impurities, and acid impurities; reacting the process stream with a basic aqueous solution, the basic aqueous solution comprising water and at least one base selected from the group of an alkali metal carbonate and an alkali metal hydroxide; and separating at least some of the organic impurities from the process stream.

To solve the above problems, the present application provides a novel low-GWP mixed refrigerant. The present application provides a composition containing a refrigerant containing trans-1,2-difluoroethylene (HFO-1132(E)), trifluoroiodomethane (CF3I), 2,3,3,3-tetrafluoro-1-propene (R1234yf), and difluoromethane (R32).

A refrigeration cycle device comprises a refrigerant, a compressor that compresses the refrigerant, and a refrigerating machine oil that lubricates a sliding part of the compressor. The refrigerant includes trifluoroiodomethane. The refrigerating machine oil includes a base oil and a quinone additive. The quinone additive is at least one selected from the group consisting of 1,4-benzoquinone, 1,2-benzoquinone, 2-methyl-1,4-benzoquinone, 2-phenyl-1,4-benzoquinone, 2-tert-butyl-1,4-benzoquinone, 1,4-naphthoquinone, 1,2-naphthoquinone, 2,6-naphthoquinone, 2-hydroxy-1,4-naphthoquinone, and 1,4-anthraquinone.

The invention discloses a synthesis method of trifluoromethyl sulfide, which comprises the following steps: in the presence of a catalyst, reacting trifluoroiodomethane with trifluoromethyl persulfane, and synthesizing to obtain the trifluoromethyl sulfide. The trifluoromethyl sulfide synthesis method provided by the invention has the advantages of few by-products and high reaction efficiency.

A composition comprising trifluoroiodomethane (CF3I) and 1,1-difluoroethylene (R-1132a) is described. The composition can also comprise additional compounds, such as at least one non-flammable compound selected from the group consisting of carbon dioxide (CO2; R-744), tetrafluoromethane (R-14), trifluoromethane (R-23) and perfluoroethane (R-116) or at least one additional compound of lower volatility than 1,1-difluoroethylene selected from the group consisting of 1,1,2-trifluoroethylene (R-1123), difluoromethane (R-32), propane (R-290), propylene (R-1270), fluoroethane (R-161), pentafluoroethane (R-125), 1,1,1,2-tetrafluoroethane (R-134a), 2,3,3,3-tetrafluopropene (R-1234yf), isobutane (R-600a), n-butane (R-600), trans-1,3,3,3-tetrafluopropene (R-1234ze(E)), 3,3,3-trifluoropropene (R-1243zf), 1,2,3,3,3-pentafluoropropene (R-1225ye), 1, 1,1,2,3,3,3-heptafluoropropane (R-227ea), 1,1-difluoroethane (R-152a), cis-1,3,3,3-tetrafluopropene (R-1234ze(Z)), 1-chloro-3,3,3-trifluoropropene (R-1233zd(E / Z)) and 1,1,1,4,4,4-hexafluoro-2-butene (R-1336mzz(E / Z)). The compositions have utility as refrigerants in vapour compression heat transfer systems.

The application provides a refrigerant and a preparation method thereof. The refrigerant is combined by a first component, a second component and a third component, wherein the first component is 3,3,3-trifluoropropynyl, the second component is 1,1-difluoroethane, and the third component is trifluoroiodomethane or one of 2,3,3,3-tetrafluoropropene; in the refrigerant, the content of the first component is a first preset value, the content of the second component is a second preset value, and the content of the third component is a third preset value; the first preset value, the second preset value and the third preset value are greater than zero and the sum is 100 percent. The refrigerant is combined by three components, the GWP is less than 150, the ODP is 0, and the refrigerant has obvious environmental protection advantages; meanwhile, the environmental protection mixed refrigerant has similar thermal performance and unit volume refrigerating capacity to R290. Compared with R290, the safety of the mixed refrigerant is obviously improved, and the safety grade is better than that of R290.

To reduce a load on a distillation process by bringing trifluoroiodomethane into contact with an alkaline medium as a pretreatment when distilling the trifluoroiodomethane to remove hydrogen fluoride gas, carbon dioxide gas and the like contained in the trifluoroiodomethane.SOLUTION: In the method for producing high-purity trifluoroiodomethane, trifluoromethane is reacted with iodine to produce trifluoroiodomethane, and the obtained trifluoroiodomethane is brought into contact with an alkaline solvent so that the content ratios of (a) carbon dioxide (CO2) and (b) hydrogen fluoride (HF) on the basis of peak areas determined by gas chromatography and / or ion chromatography are (a) ≤ 0.0010% and (b) ≤ 0.0010%, respectively, and the content of trifluoroiodomethane is 99.7% or more.SELECTED DRAWING: None

The present application relates to the technical field of electrical equipment state monitoring, and is a kind of gas insulated equipment monitoring and fault analysis method and device, the former is carried out according to the following method: first, before the operation of the gas insulated equipment, inject the required amount of trifluoroiodomethane into the sulfur hexafluoride gas of each gas chamber of the gas insulated equipment;Second, when the gas insulated equipment is running or fault shutdown, the water content and iodine ion content in the sulfur hexafluoride gas of each gas chamber are monitored, and the running state of the gas insulated equipment is evaluated and analyzed according to the water content and iodine ion content in the sulfur hexafluoride gas.The present application avoids the huge difference between the running state and shutdown state detection data of the gas insulated equipment, improves the monitoring accuracy, and monitors the actual running state of the equipment online, providing a reliable evaluation basis for the running state and fault analysis of the gas insulated equipment.

A refrigeration oil according to embodiments of the present disclosure includes a silane compound having at least one of a glycidyl group and an isocyanate group. The heat pump according to embodiments of the present disclosure includes a refrigerant including trifluoroiodomethane (R-1311) and the refrigeration oil including a silane compound having at least one of a glycidyl group and an isocyanate group.

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 mixed refrigerant composition according to embodiments of the present disclosure includes carbon dioxide (R-744), trifluoroiodomethane (R-13I1), and 1,1-difluoroethane (R-152a), wherein a sum of contents of the trifluoroiodomethane (R-13I1) and the 1,1-difluoroethane (R-152a) based on a total weight of the mixed refrigerant composition may be 60 wt. % or more and less than 100 wt. %. Accordingly, environmental pollution caused by the mixed refrigerant composition may be suppressed, and the cooling performance of the mixed refrigerant composition may be improved.

The invention discloses a refrigerant composition which comprises the following components in percentage by mass: 55%-57.5% of difluoromethane (R32), 38.4%-41.5% of trans-1, 2-difluoroethylene (R1132E) and 2.5%-5% of trifluoroiodomethane (R13I1), the global warming potential value (GWP) of the refrigerant composition is smaller than or equal to 450, and the refrigerant composition has the characteristic that the refrigerant composition has the characteristic that the refrigerant composition has the characteristic that the refrigerant composition has the characteristic that the refrigerant composition has the characteristic that the refrigerant composition has the characteristic that the refrigerant composition has the characteristic that the refrigerant composition has the characteristic that the refrigerant composition has the characteristic that the refrigerant composition has the characteristic that the refrigerant composition has the All the components of the refrigerant composition have the remarkable advantages of being low in GWP within a certain content range, good in refrigeration effect, low in flammability, good in combustion suppression effect and environmentally friendly.

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.

Compositions and methods of heat transfer and systems containing refrigerants consisting essentially of difluoromethane (HFC-32) and trifluoroiodomethane (CF3I), and compositions and methods of heat transfer and systems containing refrigerants consisting essentially of difluoromethane (HFC-32) and trifluoroiodomethane (CF3I) and CO2 are disclosed.

The invention provides a composition comprising carbon dioxide (CO2, R-744), difluoromethane (R-32) and trifluoroiodomethane (CF3I) and the use of such a composition as a working fluid in a heat transfer system, such as a refrigeration, heat pump or air-conditioning system.

The invention provides a mixed refrigerant which can be used as an alternative refrigerant of R410A, has excellent performance coefficient and freezing capacity, is sufficiently low in GWP (global warming potential), and is non-combustible. Specifically, the present invention provides a refrigerant-containing composition characterized in that the refrigerant contains trifluoroiodomethane (CF3I) and difluoromethane (R32), and when the total amount of CF3I and R32 is taken as 100 mass%, the respective contents of CF3I and R32 in the refrigerant are 48 mass% > = CF3I > = 46 mass% and 54 mass% > = R32 > = 52 mass%.

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.