118 results about "Hydrofluoroolefin" patented technology

The invention discloses a two-phase immersed fluorine-containing cooling liquid, the fluorine-containing cooling liquid comprises a hexafluoropropylene dipolymer and hydrofluoroolefin, the molecular formula of the hexafluoropropylene dipolymer is C6F12, and the molecular formula of the hydrofluoroolefin is C6H2F10, the fluorine-containing cooling liquid not only has good electrical insulation performance, but also has the advantage of high heat transfer coefficient, and the fluorine-containing cooling liquid is suitable for being used as a cooling liquid for a motor vehicle. The fluorine-containing cooling liquid provided by the invention is continuously subjected to the phase change process from the liquid state to the gas state and then from the gas state to the liquid state in the circulating heat dissipation process, the evaporation latent heat of the cooling liquid is fully utilized, and the heat dissipation requirement of a high-power heating element can be met.

The present invention relates to system, equipment and methods for preparing and charging a refrigerant circuit with either (1) a fluoroolefin refrigerant compositions stabilized with an inhibitor agent which prevents or reduce oligomerization or polymerization of the fluoroolefin component of the composition or (2) a purified fluoroolefin refrigerant compositions by removing the inhibitor agent, and / or maintaining the integrity of fluoroolefin refrigerant compositions in refrigeration equipment by circulating the fluoroolefin refrigerant compositions in the refrigerant equipment through or more columns or devices to remove at least one of oxygen and oxygen containing contaminants, moisture / water, oligomerization / polymerization by-products.

Disclosed is a hydrofluoroolefin working fluid including: a dielectric fluid selected from E-HFO-153-10mczz and / or E-HFO-153-10mzzy; and water dissolved within the dielectric fluid at a concentration of from 10 to about 145 ppm of and / or a plasticizer or plasticizer mixture dissolved within the dielectric fluid at a concentration of from about 10 to about 7341 ppm. The hydrofluoroolefin working fluid is useful for immersion cooling of an electronic component.

The invention discloses a green working medium assisted carbon dioxide heat pump combined heat supply system and a control method. The environment-friendly working medium hydrofluoroolefin or ammonia and carbon dioxide are adopted, the water supply temperature is remarkably increased, and pollution of a traditional refrigerant to the environment is reduced; the water heating type green working medium heat pump assisted CO2 heat pump heating mode of the series connection type or the parallel connection type is used for extracting heat energy from water, reducing the return water temperature and improving the operation energy efficiency ratio of the carbon dioxide heat pump, or the CO2 heating type green working medium heat pump assisted CO2 heat pump heating mode is used for extracting heat energy from CO2, and the recovered heat is improved to the high grade, so that the energy efficiency ratio of the carbon dioxide heat pump is improved. The water supply temperature and the system energy efficiency are further improved; more energy is absorbed from an environment source; the CO2 heat pump unit improves the energy grade of an environmental source and transmits the improved energy to heating return water, the adaptability of the system under various environmental conditions is improved, and the overall performance and the energy-saving effect of the carbon dioxide heat pump are further enhanced.

The invention relates to the technical field of preparation of hydrofluoroolefin, in particular to a method for preparing 2, 3, 3, 3-tetrafluoropropene, which comprises the following steps: carrying out fluorination reaction on 3, 3, 3-trifluoro-2-chloropropene and excessive hydrogen fluoride under the action of a catalyst to generate a first mixture flow containing 1, 1, 1, 2, 2-pentafluoropropane (245cb), and separating the first mixture flow from the first mixture flow to obtain the 2, 3, 3, 3, 3-tetrafluoropropene. Then directly introducing the first mixture flow into a dehydrofluorination reactor for gas phase dehydrofluorination reaction to generate a second mixture flow containing 2, 3, 3, 3-tetrafluoropropene, hydrogen fluoride and unreacted raw materials, finally condensing the second mixture to remove hydrogen chloride, condensing and recycling hydrogen fluoride to obtain a third mixture flow, and rectifying the third mixture flow to obtain 2, 3, 3, 3-tetrafluoropropene. And 3, 3, 3, 3-tetrafluoropropene. According to the invention, unavoidable process wastes in the prior art are converted into recyclable reaction raw materials, the environmental protection and economic pressure of by-product treatment in the prior art is eliminated, meanwhile, the purpose of continuous flow reaction is effectively realized, and the process control difficulty and the process cost are reduced.

The invention provides a K-Zn composite carbon-based catalyst, a preparation method thereof and application of the K-Zn composite carbon-based catalyst in synthesis of 1, 2-difluoroethylene, and belongs to the technical field of hydrofluoroolefin synthesis. The preparation method comprises the following steps: firstly synthesizing a zinc-based anionic metal organic framework material (Zn-MOFs), then performing ion exchange with sylvite, and performing activating treatment in HCl-containing gas to obtain the K-Zn composite carbon-based catalyst. According to the invention, Zn-MOFs is adopted as a catalyst precursor, dimethylamine cations in the structure of the Zn-MOFs are subjected to ion exchange with potassium ions, and activation treatment is carried out in HCl gas to obtain the high-performance surface chlorinated K-Zn composite carbon-based catalyst. According to the prepared K-Zn composite carbon-based catalyst, 1, 2-dichloroethylene and HF can be subjected to HF addition reaction and HCl removal reaction, the target product 1, 2-difluoroethylene can be prepared through one-step reaction, the technological process is greatly shortened, and the reaction efficiency is improved.

An aerosol delivery system is disclosed. The system comprises an aerosol container housing an aerosol composition that includes a propellant mixture and an additive. The propellant mixture comprises a first hydrofluoroolefin propellant in an amount of 50% to 99% w / w % and a second hydrofluoroolefin propellant in an amount of 1% to 50% w / w %. The additive is present in an amount of up to 70% w / w %, has a specific gravity of 0.5 to 1.2, a partition coefficient of −0.5 to 4, and a water content of up to 2% w / w %. A micromist actuator with an orifice diameter of 0.25 to 0.80 microns produces droplets of 25 to 50 microns. The aerosol has a viscosity of 0.5 to 3.0 centipoise, ensuring fine mist dispersion, prolonged airborne suspension, and consistent delivery, making it suitable for environmental scenting, air treatment, and personal care applications.

The present invention provides a liquid cooling medium and a preparation method and application thereof, belonging to the field of chemical industry. The liquid cooling medium prepared by the preparation method provided by the present invention is a hydrofluoroolefin mixture, comprising two material components, CF3CF2CF2CH=CHCF3 and (CF3)2CFCH=CHCF3. The mixture is spontaneously generated in the preparation process, and there is no need to separate the two, and it can be directly used as a two-phase immersion liquid cooling medium. The preparation method of the present invention is of great significance for preparing candidate working fluids with excellent performance and stable quality for immersion cooling systems, optimizes the synthesis process of hydrofluoroolefins, and provides a full-process preparation process method for raw materials, intermediates and final products. The final product obtained has stable quality and excellent performance. The prepared liquid cooling medium has the advantages of efficient heat dissipation and temperature control, which can achieve the purpose of energy saving and consumption reduction.

To achieve further reduction of environmental impact in a working medium for a refrigeration cycle that contains a fluoroolefin as a refrigerant component and also contains a disproportionation inhibitor.SOLUTION: This working medium for a refrigeration cycle contains, as a refrigerant component, a fluoroolefin in which a disproportionation reaction occurs, and also contains a hydrofluoroolefin with a carbon number of 3 or more, different from the fluoroolefin, as a disproportionation inhibitor that suppresses the disproportionation reaction in the fluoroolefin. The hydrofluoroolefin may be a structure that does not have a perfluoromethyl group (-CF3) or a perfluoromethylene group (-CF2-) in the molecular structure thereof, and may be a structure that has at least one of a methyl group (-CH3), a fluoromethyl group (-CH2F), and a difluoromethyl group (-CHF2) in the molecular structure thereof.SELECTED DRAWING: None

The present invention relates to systems, apparatuses, and methods for preparing and charging into a refrigerant circuit any of: (1) a fluoroolefin refrigerant composition stabilized with an inhibitor that prevents or reduces oligomerization or polymerization of the fluoroolefin component of the composition, and (2) a refrigerant composition stabilized with an inhibitor that prevents or reduces polymerization of the fluoroolefin component of the composition; or (2) a fluoroolefin refrigerant composition purified by removal of the inhibitor; and / or maintaining the integrity of the fluoroolefin refrigerant composition in a refrigeration plant by circulating the fluoroolefin refrigerant composition in the refrigerant plant through one or more columns or devices to remove oxygen and at least one of oxygen-containing contaminants, moisture / moisture, oligomeric / polymeric by-products.

To provide a novel composition suitable for use as an insulating medium or a refrigerant.SOLUTION: A composition comprises hexafluoroazomethane and at least one substance selected from the group consisting of hydrofluorocarbons, hydrofluoroolefins, hydrochlorofluoroolefins, chlorofluoroolefins, perfluoroolefins, nitrogen, oxygen, and carbon dioxide.SELECTED DRAWING: None

The present invention relates to a system, facility, and method for preparing and filling a refrigerant circuit with either (1) a fluorolefin refrigerant composition stabilized with an inhibitor that prevents or reduces oligomerization or polymerization of the fluorolefin constituent of the composition, or (2) a fluorolefin refrigerant composition purified by removing the inhibitor, and / or maintaining the integrity of the fluorolefin refrigerant composition in a cooling facility by circulating the fluorolefin refrigerant composition through one or more columns or devices to remove at least one of oxygen and oxygen-containing contaminants, moisture / water, and oligomerization / polymerization by-products.

To provide a method capable of separating a monofunctional species, bifunctional species, etc. of a fluorinated ether compound having a polyfluoropolyether chain and a predetermined functional group in good yield and with high separation performance.A separation method for separating a compound represented by the formula (1) and a compound represented by the formula (2) from a mixture containing them by chromatography using a stationary phase and a mobile phase, wherein the mobile phase contains at least one type of specific solvent selected from a hydrofluoroolefin, a hydrochlorofluoroolefin, a chlorofluoroolefin, a cyclic hydrofluoroolefin, a cyclic hydrochlorofluoroolefin, a cyclic chlorofluoroolefin, a cyclic hydrofluorocarbon, a cyclic hydrochlorofluorocarbon, a cyclic chlorofluorocarbon and a perfluoroketone:A-(OX)m—O—Z—(R)n1  Formula (1)(R)n2—Z—(OX)m—O—Z—(R)n3  Formula (2)

A method for producing polyolefin-based resin expanded beads includes dispersing polyolefin-based resin particles in an aqueous medium, adding a physical blowing agent into a sealed container, and expanding the resin particles by impregnating the resin particles with the physical blowing agent in the sealed container, then releasing the resin particles from the sealed container together with the aqueous medium to produce expanded beads having an apparent density of 10 to 80 kg / m3. The physical blowing agent includes a hydrofluoroolefin. An addition amount of the hydrofluoroolefin is 10 to 30 parts by mass with respect to 100 parts by mass of the resin particles.

The present invention relates to a process for the purification of a fluorocarbon from a mixture comprising said fluorocarbon and hydrogen, said process comprising a stage of bringing said mixture into contact with a membrane M1 to form a stream F1 comprising the fluorocarbon and a stream F2 comprising the hydrogen. The present invention also relates to a process for the production of trifluoroethylene. The present invention also relates to a process for the separation of a hydrofluoroolefin or of a hydrofluoroalkane from nitrogen by membrane separation. The present invention also relates to a process for the separation of trifluoroethylene from chlorotrifluoroethylene or from a hydrofluorocarbon.

To effectively suppress or mitigate propagation of a disproportionation reaction of hydrofluoroolefin without being significantly affected by the configuration of a compressor.SOLUTION: In the present invention, a motor unit of a compressor is provided with a plurality of passages whereby a upper space and a lower space inside a sealed container are in communication. A total cross-sectional area of all passages (rotor passages) provided in a rotor of the motor unit is defined as A, a total cross-sectional area of all passages (non-rotor passages) provided outside the rotor is defined as B, a total heat transfer area of all the rotor passages is defined as C, a total heat transfer area of all the non-rotor passages is defined as D, and a cross-sectional area of the sealed container based on an inner diameter thereof is defined as S. In the compressor, A≥B, C≥D, a ratio C / S is 1.0 or more (C / S≥1.0), or a ratio (A+B) / S is 0.05 or more ((A+B) / S≥0.05).SELECTED DRAWING: Figure 2

The invention relates to a process and a method for regenerating combustible and non-combustible hydrofluoroolefin-containing refrigerants. The invention provides a method and apparatus for regenerating a refrigerant. The method includes transferring an unregenerated refrigerant composition comprising one or more hydrofluoroolefins from a source vessel to a receiving vessel, and transporting the receiving vessel to a recirculation center. The unregenerated refrigerant composition is analyzed to determine the composition of the unregenerated refrigerant composition sample. A target composition is determined based on the analyzed unregenerated refrigerant composition, and one or more treatments are determined based on the target composition. The unregenerated refrigerant composition is treated by one or more treatments to form a regenerated refrigerant composition having a composition equal to the target composition.

Pharmaceutical aerosol formulations containing pre-micronized albuterol sulfate, high amount of green propellant trans-1,3,3,3-tetrafluoropropene (HFO-1234ze(E)), and a surfactant (polysorbate 80 (polyoxyethylene (20) sorbitan monooleate), polysorbate 20 (polyoxyethylene (20) sorbitan monolaurate), polyethylene glycol 1000, span 85 (sorbitan trioleate), polyvinylpyrrolidone K25, or their combination) in a pressurized metered dose inhaler are described. The formulations do not use any co-solvent, i.e., they are co-solvent-free (e.g., free of ethanol, glycerol, propylene glycol, and a combination thereof). The formulations provide highly efficient delivery, through metered dose inhaler (MDI), of pre-micronized albuterol particles into the patients' respiratory tracts and have the advantages of high efficacy, improved safety, and a low global warming potential (GWP) for environmental impact.

Provided is a compressor in which the sliding performance of a sliding part is improved. In order to solve this problem, a compressor (100) is provided with: a high-pressure chamber-type sealed container (1) in which refrigerant oil and a refrigerant containing 50 mass% or more of a hydrofluoroolefin refrigerant are sealed; and a compression mechanism part (8) which is housed in the sealed container (1) and has a sliding part (9) made of an iron-based material, the refrigerator oil comprising a polyvinyl ether and / or a polyol ester, and the kinematic viscosity of the refrigerator oil at 40 DEG C being from 10 mm2 / s to 40 mm2 / s (inclusive).

To provide an aerosol product having sufficient cooling performance without using hydrofluoroolefin as a propellant.SOLUTION: An aerosol product comprising an aerosol composition containing not less than 40vol% of at least one propellant selected from the group consisting of dimethyl ether and liquefied petroleum gas, an aerosol vessel for filling the aerosol composition, the aerosol vessel comprising a pressure vessel and an aerosol valve fixed to the pressure vessel, and a spray member attached to the aerosol valve, wherein the aerosol composition contains substantially no water, the aerosol valve is not formed with a gas phase introduction hole, and the spray member is not provided with a mechanical breakup mechanism, the aerosol valve has a stem hole cross-sectional area / an injection hole cross-sectional area of 5.0 or more.SELECTED DRAWING: Figure 1

The invention relates to the technical field of refrigerants, and particularly provides an environment-friendly refrigerant and a preparation method and a recovery system thereof. In order to solve the problems that a traditional refrigerant is high in global warming potential (GWP), large in degradation energy consumption and not matched with a novel catalyst, the refrigerant is hydrofluoroolefin containing beta-position C = C double bonds, the molecular general formula is CF3CF = CHR (R is H or F), the molecular size is smaller than or equal to 0.8 nm, and the refrigerant is specially designed for being matched with a mesoporous structure of a TNT-120 titanium dioxide nanotube, and adsorption-mass transfer optimization and photo-thermal synergistic degradation synergism are achieved. And a closed-loop solution from production to scrapping is provided for the novel refrigerant. The recycling system adopts a catalytic reactor of which the inner wall is loaded with a titanium dioxide nano coating, and the refrigerant is efficiently degraded under the conditions of low temperature (25-240 DEG C) and low light intensity (0.5-3W / cm < 2 >). The refrigerant has a GWPlt (GWPlt); the refrigerant has the advantages of being good in heat stability, low in degradation energy consumption, environmentally friendly in the whole life cycle and the like, is suitable for replacing a high-GWP refrigerant and meets the requirement for green refrigeration.

Cleaning fluids include at least two fluid components. The first fluid component is a hydrofluorothioether or a chlorinated hydrofluoroolefin, or at least one of the isomers of a hydrochlorofluoroolefin, and the second fluid component is an alcohol with 1-5 carbon atoms. The cleaning fluid provides enhanced removal of particulate contamination, improved reduction of particle reattachment, or a combination thereof when compared to a cleaning fluid comprising a fluorinated fluid.

The present invention provides an aerosol composition that does not require emulsification of water and liquefied gas, can be uniformly dispersed for several seconds (e.g., 2 seconds or more) by shaking the container before spraying, can be sprayed with a stable composition, and produces a freezing spray that provides a sustained cooling effect. [Solution] An aerosol composition comprising water, a hydrofluoroolefin having a boiling point of 5 to 30°C, and dimethyl ether, wherein the dimethyl ether content is 10 to 40% by mass, and the composition is separated into two layers.

A B-side component of a two component low pressure polyurethane foam, the B-side component includes: a fluoride ion scavenger; one or more polyols consisting of all polyether polyols and, if the fluoride ion scavenger is a polyol, the fluoride ion scavenger, and no polyester polyols; at least one silicone polyether surfactant; at least one flame retardant and / or plasticizer; a catalyst package comprising an amine catalyst; and an HFO propellant consisting of 1,3,3,3-tetrafluoropropene and no other HFO propellant. Water is in an amount of less than 1% by weight of the B-side prior to inclusion of the HFO propellant at the B-side.

In the present invention, a motor unit of a compressor is provided with a plurality of passages whereby an upper space and a lower space inside a sealed container are in communication. A is defined as the total cross-sectional area of all passages (rotor passages) provided to a rotor of the motor unit, B is defined as the total cross-sectional area of all passages (non-rotor passages) not provided to the rotor, C is defined as the total heat transfer area of all rotor passages, D is defined as the total heat transfer area of all non-rotor passages, and S is defined as the cross-sectional area of the sealed container based on the inner diameter thereof. In the compressor, A≥B, C≥D, the ratio C / S is not less than 1.0 (C / S≥1.0), or the ratio (A+B) / S is not less than 0.05 ((A+B) / S≥0.05). Thus, propagation of a disproportionation reaction of hydrofluoroolefin is favorably suppressed or mitigated without a large effect on the configuration of the compressor.

The objective is to provide a method for producing polyurethane foam that exhibits good miscibility between the polyol composition and the polyisocyanate composition, and also has excellent initial reactivity during polyurethane foam formation. [Solution] The present invention relates to a method for producing polyurethane foam by mixing and reacting a polyol composition containing a catalyst comprising a polyol and a metal carboxylate salt with a polyisocyanate composition containing a polyisocyanate, and then foaming and curing the mixture. The production method includes a step of supplying a blowing agent A in a separate system from the polyol composition and the polyisocyanate composition, wherein the blowing agent A comprises a mixture of carbon dioxide and a hydrofluoroolefin with a boiling point of 0°C or lower. The blowing agent A is added to at least one of the polyol composition and the polyisocyanate composition in a ratio of 0.01 to 4 parts by mass per 100 parts by mass of polyol in the polyol composition, and the reaction proceeds after the addition.

The present invention relates to a process for the purification of a fluorocarbon from a mixture comprising said fluorocarbon and hydrogen, said process comprising a stage of bringing said mixture into contact with a membrane M1 to form a stream F1 comprising the fluorocarbon and a stream F2 comprising the hydrogen. The present invention also relates to a process for the production of trifluoroethylene. The present invention also relates to a process for the separation of a hydrofluoroolefin or of a hydrofluoroalkane from nitrogen by membrane separation. The present invention also relates to a process for the separation of trifluoroethylene from chlorotrifluoroethylene or from a hydrofluorocarbon.

The object of the present application is to provide a phenolic resin foam having a small load on the environment, high compression strength, excellent handling properties during construction and cost savings during fixing, and a method for producing the same. The phenolic resin foam of the present application is characterized in that it contains at least one selected from the group consisting of chlorinated hydrofluoroolefins, non-chlorinated hydrofluoroolefins and halogenated hydrocarbons, and has a density of 20 kg / m 3 Above and 100kg / m 3 Below, the independent cell ratio is 80% or more and 99% or less, and the 10% compression strength and the above density satisfy the following relationship. C≥0.5X-7 (where C represents the 10% compression strength (N / cm 2 ), X represents density (kg / m 3 )).

A variety of methods and compositions are disclosed, including, in one example, a method that includes compressing a working fluid with a compressor to form a compressed working fluid, wherein the working fluid includes at least one C5 or C6 cis or (Z) hydrofluoroolefins and at least one C5 or C6 cis olefins, condensing the working fluid to form a condensed working fluid, expanding the working fluid to form an expanded working fluid, and heating the working fluid, wherein heat from a heat source is transferred to a heat sink with the working fluid. In embodiments, the compounds and blends are designed for high temperature heat pump (HTHP) and Organic Rankine Cycle (ORC) applications for waste heat recovery and low-grade renewable (e.g., geothermal & flat panel solar) energy utilization.

Disclosed are a method for controlling heating of an HVAC system for an electric vehicle and an HVAC system thereof. According to various embodiments, in an operation of the HVAC system including a main heating unit in which a first refrigerant circulates and an auxiliary heating unit in which a second refrigerant circulates, at least one of the first refrigerant and the second refrigerant may comprise at least one of: a natural refrigerant; a hydrofluorocarbon (HFC)-based refrigerant; a hydrofluoroolefin (HFO)-based refrigerant; a hydrochlorofluorocarbon (HCFC)-based refrigerant; a hydrocarbon-based refrigerant that is not a natural refrigerant; and a halon or a perfluorocarbon (PFC)-based refrigerant.