CN116694305A - Low GWP value composition containing trifluoroacetyl fluoride and use thereof - Google Patents
Low GWP value composition containing trifluoroacetyl fluoride and use thereof Download PDFInfo
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- CN116694305A CN116694305A CN202210189236.9A CN202210189236A CN116694305A CN 116694305 A CN116694305 A CN 116694305A CN 202210189236 A CN202210189236 A CN 202210189236A CN 116694305 A CN116694305 A CN 116694305A
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- trifluoroacetyl fluoride
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- DCEPGADSNJKOJK-UHFFFAOYSA-N 2,2,2-trifluoroacetyl fluoride Chemical compound FC(=O)C(F)(F)F DCEPGADSNJKOJK-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000000203 mixture Substances 0.000 title claims abstract description 51
- 239000003507 refrigerant Substances 0.000 claims abstract description 96
- 239000012752 auxiliary agent Substances 0.000 claims abstract description 7
- 150000001875 compounds Chemical class 0.000 claims abstract description 6
- 238000009835 boiling Methods 0.000 claims description 24
- 238000001704 evaporation Methods 0.000 claims description 19
- 230000008020 evaporation Effects 0.000 claims description 7
- 239000000314 lubricant Substances 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 5
- 238000005057 refrigeration Methods 0.000 abstract description 25
- 231100000053 low toxicity Toxicity 0.000 abstract description 2
- 230000007613 environmental effect Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 13
- RWRIWBAIICGTTQ-UHFFFAOYSA-N difluoromethane Chemical compound FCF RWRIWBAIICGTTQ-UHFFFAOYSA-N 0.000 description 10
- 238000002156 mixing Methods 0.000 description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 7
- NPNPZTNLOVBDOC-UHFFFAOYSA-N 1,1-difluoroethane Chemical compound CC(F)F NPNPZTNLOVBDOC-UHFFFAOYSA-N 0.000 description 6
- 238000004880 explosion Methods 0.000 description 6
- 230000003247 decreasing effect Effects 0.000 description 5
- 239000007789 gas Substances 0.000 description 5
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 4
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 4
- DTQVDTLACAAQTR-UHFFFAOYSA-N Trifluoroacetic acid Chemical compound OC(=O)C(F)(F)F DTQVDTLACAAQTR-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002360 explosive Substances 0.000 description 4
- GTLACDSXYULKMZ-UHFFFAOYSA-N pentafluoroethane Chemical compound FC(F)C(F)(F)F GTLACDSXYULKMZ-UHFFFAOYSA-N 0.000 description 4
- 239000005431 greenhouse gas Substances 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- SYNPRNNJJLRHTI-UHFFFAOYSA-N 2-(hydroxymethyl)butane-1,4-diol Chemical compound OCCC(CO)CO SYNPRNNJJLRHTI-UHFFFAOYSA-N 0.000 description 2
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 2
- OTMSDBZUPAUEDD-UHFFFAOYSA-N Ethane Chemical compound CC OTMSDBZUPAUEDD-UHFFFAOYSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 description 2
- XPDWGBQVDMORPB-UHFFFAOYSA-N Fluoroform Chemical compound FC(F)F XPDWGBQVDMORPB-UHFFFAOYSA-N 0.000 description 2
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000000354 decomposition reaction Methods 0.000 description 2
- 239000012847 fine chemical Substances 0.000 description 2
- 239000011737 fluorine Substances 0.000 description 2
- 229910052731 fluorine Inorganic materials 0.000 description 2
- 229910000040 hydrogen fluoride Inorganic materials 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- LMFJKKGDLAICPF-UHFFFAOYSA-N phenanthrene-9-carboxylic acid Chemical compound C1=CC=C2C(C(=O)O)=CC3=CC=CC=C3C2=C1 LMFJKKGDLAICPF-UHFFFAOYSA-N 0.000 description 2
- 239000001294 propane Substances 0.000 description 2
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 description 2
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VPAYJEUHKVESSD-UHFFFAOYSA-N trifluoroiodomethane Chemical compound FC(F)(F)I VPAYJEUHKVESSD-UHFFFAOYSA-N 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- YFAPQJRMAOIKPB-UHFFFAOYSA-N 1,1,1,2,3,3-hexafluoro-3-(1,1,1,2,3,3,3-heptafluoropropan-2-yloxy)-2-(1,1,2,2,3,3,3-heptafluoropropoxy)propane Chemical compound FC(F)(F)C(F)(F)C(F)(F)OC(F)(C(F)(F)F)C(F)(F)OC(F)(C(F)(F)F)C(F)(F)F YFAPQJRMAOIKPB-UHFFFAOYSA-N 0.000 description 1
- 229940051271 1,1-difluoroethane Drugs 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- NJCQVAKYBOCUCS-UHFFFAOYSA-N [C].F Chemical compound [C].F NJCQVAKYBOCUCS-UHFFFAOYSA-N 0.000 description 1
- 239000004480 active ingredient Substances 0.000 description 1
- 229910002092 carbon dioxide Inorganic materials 0.000 description 1
- 239000001569 carbon dioxide Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 231100000086 high toxicity Toxicity 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 239000010687 lubricating oil Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000009972 noncorrosive effect Effects 0.000 description 1
- AHHWIHXENZJRFG-UHFFFAOYSA-N oxetane Chemical compound C1COC1 AHHWIHXENZJRFG-UHFFFAOYSA-N 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 238000005979 thermal decomposition reaction Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- CYRMSUTZVYGINF-UHFFFAOYSA-N trichlorofluoromethane Chemical compound FC(Cl)(Cl)Cl CYRMSUTZVYGINF-UHFFFAOYSA-N 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/04—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa
- C09K5/041—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems
- C09K5/044—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds
- C09K5/045—Materials undergoing a change of physical state when used the change of state being from liquid to vapour or vice versa for compression-type refrigeration systems comprising halogenated compounds containing only fluorine as halogen
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/10—Components
- C09K2205/12—Hydrocarbons
- C09K2205/122—Halogenated hydrocarbons
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/22—All components of a mixture being fluoro compounds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2205/00—Aspects relating to compounds used in compression type refrigeration systems
- C09K2205/24—Only one single fluoro component present
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Thermal Sciences (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Lubricants (AREA)
Abstract
The invention belongs to the technical field of refrigerants, and provides a composition containing trifluoroacetyl fluoride and having a low GWP value, wherein the composition comprises trifluoroacetyl fluoride and a component A, and the component A is selected from the group consisting of compounds with a general formula of C n F x H y At least one of (a) and (b); the trifluoroacetyl fluoride content is greater than or equal to 50wt%, where n=1, 2 or 3, y is greater than or equal to 1, x+y=2n or 2n+2, and the refrigerant may further include a functional auxiliary agent to optimize the performance of the refrigerant. The composition has low toxicity, high thermal stability and GWP less than or equal to 150, and can meet the international environmental protection requirement; the use temperature zone can cover a low-temperature refrigeration temperature zone as low as-85 ℃, and when the refrigeration system is used in the temperature zone of-40 to-83 ℃, the refrigeration system can still ensure positive pressure operation, and is expected to be used as a main component of a new-generation refrigerant to promote the further development of the refrigeration industry.
Description
Technical Field
The invention belongs to the field of fine chemicals and refrigerants, and particularly relates to a composition containing trifluoroacetyl fluoride and having a low GWP value and application thereof.
Background
With the increasing prominence of global climate change problems, more and more countries are proposing carbon-free future prospects. The use of refrigerants containing carbon hydrofluoride and having Global Warming Potential (GWP) of 150 or more for domestic or commercial refrigerators and freezers, commercial combined-installed centralized refrigeration systems with rated power of not less than 40kW, mobile room air conditioners, and the like has been banned in the european union since month 1 of 2022, and the forbidden list will increase in the future. The refrigerant with the current requirement of evaporating temperature between-40 ℃ and-50 ℃ is usually R410A, which is a mixture of difluoromethane (R32) and pentafluoroethane (R125), and has the advantages of incombustibility and excellent performance, but has a GWP value as high as 1924, and is replaced finally.
In the prior art, patent document CN102639668A (application number CN 201180004783.5) discloses that a mixed refrigerant of R32 and 2, 3-tetrafluoropropene (R1234 yf) can have a good effect when used in place of R410A, but the boiling point of 2, 3-tetrafluoropropene itself is higher, reaching-29 ℃, and still has a certain GWP value, which limits its use in a low temperature region. Patent document CN102925108A (CN 201210393640.4) discloses a ternary refrigerant mixed by trifluoroiodomethane, 1-difluoroethane (R152 a) and propane, which can be used as a substitute for difluoromethane (R22) and R410A, but since trifluoroiodomethane has a boiling point of only-22 ℃, is unstable, has a low flash point, has a certain toxicity, and is not a safe and environment-friendly refrigerant substitute. Propane is a flammable and explosive medium. The ternary refrigerant has poor application prospect. The environment-friendly refrigerant disclosed at present has more components and complex composition, the normal pressure boiling point of the common refrigerant is often between minus 25 ℃ and minus 52 ℃ and minus 75 ℃ and minus 85 ℃, and the GWP value is generally more than 150. In order to reduce the GWP of the refrigerant, some refrigerant compositions even employ mixtures of more than three elements. However, the number of components of the refrigerant increases, and the temperature deviation increases due to the difference in leak rate of various materials during the refrigeration process. Therefore, developing a refrigerant with lower GWP, stability, safety and normal pressure boiling point temperature covering a medium-low temperature region (-50 to-75 ℃) is still a problem to be solved in the refrigeration industry.
Disclosure of Invention
Aiming at the problems of generally higher GWP, insufficient types of refrigerants with normal pressure boiling point in a medium-low temperature region and the like in the prior art, the invention provides a composition with low GWP value and containing trifluoroacetyl fluoride, application of the composition and a refrigerant containing the composition.
Term interpretation:
evaporating temperature: the temperature of the refrigerant at which it evaporates and boils in the evaporator. This temperature is related to the terminal demand and heat exchange area of the heat exchanger and is generally selected to be the highest phase transition temperature required for boiling the refrigerant at the theoretical highest heat exchange efficiency.
Evaporation pressure: at the evaporating temperature, the refrigerant changes phase from liquid to gaseous at maximum pressure.
Exhaust pressure: the pressure at which the refrigerant leaves the outlet condenser of the refrigerator in liquid form.
Refrigerating capacity per unit volume: the amount of refrigeration generated per unit volume of refrigerant as it flows through the refrigeration system is often selected to be the ratio of the total amount of refrigeration to the refrigerant compressor inlet volume. The unit volume refrigeration capacity is directly related to the type of refrigerant and varies with the actual operating conditions.
ODP: ozone depletion potential (ozone decay index) is used to examine the potential impact of the gas dissipation of a substance into the atmosphere on ozone destruction. The ozone depletion effect of the refrigerant fluorotrichloromethane (R11) was defined as a reference, and the ODP value of R11 was set to 1, and the ODP of the other substances was a comparison value with respect to R11.
GWP: the global warming potential is an index based on the radiation characteristics of the well-mixed greenhouse gases and is used to measure the radiation forcing per unit mass of a given well-mixed greenhouse gas in the current atmosphere relative to carbon dioxide, integrated over a selected time period.
COP: the refrigeration coefficient, also called the refrigeration coefficient of performance, refers to the amount of cold that can be obtained per unit of power consumption, and is an important technical and economic indicator of refrigeration systems (refrigerators). The large refrigeration performance coefficient indicates high energy utilization efficiency of the refrigeration system (refrigerator).
R152a:1, 1-difluoroethane of the formula C 2 H 4 F 2 The normal pressure boiling point is-25 ℃, the critical temperature is 113 ℃, the flash point is-79 ℃, the explosion is flammable and explosive, and the explosion limit is 3.7-18%. Its ODP is 0 and GWP is 138. When used as a refrigerant, the system needs to be subjected to special explosion-proof treatment and is often compounded with a nonflammable refrigerant.
R1270: propylene of the formula C 3 H 6 The normal pressure boiling point is-47.7 ℃, the critical temperature is 91.9 ℃, the flash point is-108 ℃, the ignition is flammable and explosive, and the explosion limit is 2.4-10.3%. The ODP is 0 and the GWP is 1.8. When used as a refrigerant, the system needs to be subjected to special explosion-proof treatment, and is unstable and tends to self-polymerize due to double bonds.
R32: difluoromethane of the formula CH 2 F 2 The normal pressure boiling point is-51.6 ℃, the critical temperature is 78.4 ℃, and the product is not inflammable. Its ODP is 0 and GWP is 677. Is commonly used for refrigerant compounding and belongs to the replaced products at present.
R170: ethane of the formula C 2 H 6 The normal pressure boiling point is-88.6 ℃, the critical temperature is 32.2 ℃, the flash point is-129.5 ℃, the explosion is flammable and explosive, and the explosion limit is 3-16%. The ODP is 0 and the GWP is 20. When used as a refrigerant, the system requires special anti-explosion treatment and is rarely used commercially.
R125: pentafluoroethane of the formula CF 3 CHF 2 The normal pressure boiling point is-48.45 ℃, the critical temperature is 66 ℃, and the flame is not generated. The ODP is 0, the GWP is 3170, and the compound is commonly used for compounding, and belongs to a replaced product at present.
R410A: is a mixed refrigerant which is a mixture of 50wt% of R32 (difluoromethane) and 50wt% of R125 (pentafluoroethane) and has an atmospheric boiling point of-51.6 ℃ and a critical temperature of 72.5 ℃. Its ODP is 0, GWP is 1920, and it is currently a substituted product.
R23: trifluoromethane of the formula CHF 3 The normal pressure boiling point is-84 ℃, the critical temperature is 25.7 ℃, and the flame is not generated. The ODP is 0, the GWP is 12400, and the refrigerant is commonly used for refrigerating in a low-temperature area and belongs to a replaced product at present.
Trifluoroacetyl fluoride: molecular formula C 2 F 4 O, which is a gas at normal temperature and pressure, is commonly used for synthesizing fluorine-containing fine chemicals or fluorine-containing polymer monomers, and is also commonly used as etching gas for processing silicon-based materials.
Trifluoroacetyl fluoride has the following properties: the normal pressure boiling point is minus 59 ℃ and the critical temperature is 49.9 ℃; is not flammable per se; GWP value 0; the trifluoroacetyl fluoride has strong thermal stability, and experiments prove that thermal decomposition still does not occur at the high temperature of 200 ℃; it is non-corrosive in itself; the trifluoroacetyl fluoride is extremely easy to decompose when meeting water to generate hydrogen fluoride and trifluoroacetic acid.
Specifically, in order to achieve the above object, the present invention adopts the following technical scheme:
the invention provides an application of trifluoroacetyl fluoride in the field of refrigerants.
The trifluoroacetyl fluoride is used as a refrigerant, and the applicable refrigerating system temperature zone is a low temperature zone of-40 to-83 ℃, and although the trifluoroacetyl fluoride can be hydrolyzed into hydrogen fluoride and trifluoroacetic acid when meeting water, all materials used in the system need to be strictly replaced to control the water content, so that the trifluoroacetyl fluoride can meet the requirement of stable use in the refrigerating system for a long time. Although the structure of the pentafluoropropionyl fluoride and the carbonyl fluoride is similar to that of the trifluoroacetyl fluoride, the temperature range of the pentafluoropropionyl fluoride is a high temperature range of about 30 ℃ below zero, and other existing refrigerants with more advantages can be selected in the temperature range; carbonyl fluoride is unsuitable for use as a refrigerant because of its excessively high toxicity of its decomposition products.
In refrigeration systems, the evaporating temperature is defined as the temperature of the gas as the fluid evaporates, and varies with pressure in proportion to the pressure of the environment in which it is present, and is generally measured at a standard atmospheric pressure. The normal pressure evaporating temperature of the refrigerant often determines the temperature range in which it is used, and the closer the operating temperature is to its normal pressure evaporating temperature, the higher the COP value that can be achieved by the refrigeration system. The normal pressure boiling point of the common refrigerant is usually between minus 25 ℃ and minus 52 ℃ and minus 75 ℃ to minus 85 ℃, and the normal pressure boiling point of the trifluoroacetyl fluoride is minus 59 ℃, so that the blank boiling point interval of the existing refrigerant system can be made up. When the trifluoroacetyl fluoride is used as an effective component of the refrigerant, the GWP of the refrigerant composition can be reduced to be less than or equal to 150, so that the related requirements of internationally reducing carbon emission are met.
The invention also provides a composition containing trifluoroacetyl fluoride and having a low GWP value, which is characterized in that the composition comprises trifluoroacetyl fluoride and a component A, wherein the component A is selected from the group consisting of compounds having a general formula of C n F x H y At least one of (a) and (b); the trifluoroacetyl fluoride content is greater than or equal to 50wt%, where n=1, 2 or 3, y is greater than or equal to 1, and x+y=2n or 2n+2.
Preferably, the component A is selected from the group consisting of compounds of the formula C n F x H y Wherein n=1, 2 or 3, y is ≡1, x+y=2n or 2n+2.
Further preferably, the component a is selected from any one of R32 (difluoromethane), R125 (pentafluoroethane), R1270 (propylene), R170 (ethane) and R152a (difluoroethane).
Preferably, the trifluoroacetyl fluoride is present in the composition in an amount of 50 to 99wt%, and more preferably, the trifluoroacetyl fluoride is present in the composition in an amount of 78 to 99wt%.
Preferably, the composition has an atmospheric boiling point of-40 to-85 ℃; further preferably, the composition has an atmospheric boiling point of-40 to-83 ℃; still more preferably, the composition has an atmospheric boiling point of-55 to-59 ℃.
The invention also provides application of the composition in a refrigerant.
The invention also provides a refrigerant containing the composition, which is characterized in that the evaporation temperature of the refrigerant is-40 to-85 ℃, and the GWP value is not higher than 150; ODP is 0, exhaust pressure is 1300 to 3400kPa, and COP value is 0.8 to 2.
Preferably, the evaporation temperature of the refrigerant is-40 to-83 ℃, the GWP value is 0.3 to 150, and the COP value is 0.85 to 1.92.
Further preferably, the evaporation temperature of the refrigerant is-55 to-59 ℃, and the COP value is 1.2 to 1.44.
Preferably, the refrigerant further comprises a functional auxiliary agent, and the functional auxiliary agent is at least one selected from a corrosion inhibitor, a stabilizer, a lubricant, an indicator and a fluorescence leakage detecting agent.
Further preferably, the functional auxiliary agent does not contain silicon.
The trifluoroacetyl fluoride in the refrigerant provided by the invention has better compatibility with common resists, stabilizers, lubricants, indicators and fluorescent leak detection agents, and has good cycle performance and higher stability.
For example, the common stabilizers such as trifluoroacetyl fluoride, oxetane, isoprene and the like can be well shared, and have good compatibility with the perfluorinated polyester type and perfluorinated polyether type lubricating oil. However, trifluoroacetyl fluoride accelerates its decomposition when used together with a compound containing a silicon element, and it is not compatible with water.
Preferably, the content of the functional auxiliary agent in the refrigerant is 0.01-3 wt%, and the functional auxiliary agent has no influence on the performance of the refrigerant such as refrigeration efficiency, refrigeration temperature area, greenhouse gas effect value and the like.
The one or more technical schemes provided by the invention have at least the following technical effects:
1. the composition and the refrigerant provided by the invention contain trifluoroacetyl fluoride, so that the GWP value of the refrigerant is reduced, and the international environment protection requirement can be met.
2. The trifluoroacetyl fluoride in the effective components of the refrigerant provided by the invention has better compatibility with common resists, stabilizers, lubricants, indicators and fluorescent leak detectors.
3. The composition and the refrigerant of the invention have lower use temperature zone, can cover a refrigeration temperature zone as low as-85 ℃, and fill the blank of the refrigeration temperature zone of the existing refrigerant; when the refrigerating system is used in a temperature range of-40 to-83 ℃, the refrigerating system can still ensure positive pressure operation, and the COP value can reach 2.
4. The composition of the invention has low cost and low toxicity; the toxicity of the trifluoro acetyl fluoride gas volatilized when used as the refrigerant is far lower than SO 2 And NH 3 The method comprises the steps of carrying out a first treatment on the surface of the The cost of the refrigerant is far lower than that of the fourth generation refrigerant represented by R1234yf when the refrigerant is used in combination with other refrigerant active ingredients.
Detailed Description
The composition and the refrigerant containing trifluoroacetyl fluoride are further described below by way of specific examples.
All examples and comparative examples were subjected to two-stage compression refrigeration, the critical temperature of R23 refrigerant was 25.9 ℃ and the critical temperature of R170 was 32.2 ℃, and no circulating water cooling was used, so that in the examples and comparative examples containing R23 and R170, the test was performed after condensing them to 20 ℃ with 7 ℃ water, and the test of the other examples and the existing refrigerant was performed after condensing them to 32 ℃ with circulating water. The present invention is further described below with reference to examples, but the scope of the present invention is not limited thereto, and any modifications made by those skilled in the art to the technical solution of the present invention shall fall within the scope of the present invention.
The refrigerating capacity per unit volume is the characteristic of the refrigerant, and comparing the embodiment with the comparative example, which has similar evaporating temperature and evaporating pressure, is favorable for finding out the refrigerant with better performance.
Example 1
A composition containing trifluoroacetyl fluoride with low GWP value is prepared by physically mixing trifluoroacetyl fluoride and R152a at normal temperature, and a refrigerant is prepared by mixing the composition with a lubricant perfluoro-2, 5-dimethyl-3, 6-dioxanonane, wherein the content of the lubricant in a refrigeration cycle is 3wt%, and the main components and performances of the refrigerant are shown in Table 1. Example 1 has an increased COP value and a decreased GWP value compared to comparative example 1, indicating that the refrigerant is more energy efficient, less environmentally friendly under this condition.
Example 2
A composition containing trifluoroacetyl fluoride with low GWP value is prepared by physically mixing trifluoroacetyl fluoride and R152a at normal temperature, and the components and properties of a refrigerant prepared from the composition are shown in Table 1. In example 2, the COP value was increased and the GWP value was decreased, as compared with comparative example 2, and the refrigerating capacity per unit volume was also extremely close. Example 2 has an increased COP value and a decreased GWP value, and an increased refrigerating capacity per unit volume, as compared with comparative example 3, mainly because the refrigerating capacity per unit volume of trifluoroacetyl fluoride itself is superior to R125.
Example 3
A composition containing trifluoroacetyl fluoride with low GWP value is prepared by physically mixing trifluoroacetyl fluoride and R1270 at normal temperature, and the components and performances of a refrigerant prepared by the composition are shown in Table 1. At present, no refrigerant having an atmospheric evaporation temperature of-57 ℃ is available in the prior art, which can be contrasted with example 3.
Example 4
A composition containing trifluoroacetyl fluoride with low GWP value is prepared by physically mixing trifluoroacetyl fluoride and R32 at normal temperature, and the components and properties of a refrigerant prepared by the composition are shown in Table 1. Currently, no refrigerant having an atmospheric vaporization temperature of-57 ℃ is available in the prior art, in contrast to example 4.
Example 5
A composition containing trifluoroacetyl fluoride with low GWP value is prepared by physically mixing trifluoroacetyl fluoride and R32 at normal temperature, and the components and properties of a refrigerant prepared by the composition are shown in Table 1. Example 5 has an increased COP value and a significantly reduced GWP value compared to comparative example 4. The reason why the refrigerating capacity per unit volume of comparative example 4 was high is that the atmospheric boiling point of R23 was-82℃and the evaporating temperature itself at normal pressure should be around-82℃and the evaporating pressure should be raised to 308kPa when the evaporating temperature is raised to-59℃as in example 5 as a refrigerant, and the evaporating pressure is larger than the atmospheric pressure, which is disadvantageous for the normal use of R23 under such a condition, the refrigerating capacity per unit volume being too high due to the excessively high inlet pressure of the compressor, rather than the refrigerating capacity per unit volume being too high as in comparative example 4 when R23 is used under an atmospheric condition.
Example 6
A composition containing trifluoroacetyl fluoride with low GWP value is prepared by physically mixing trifluoroacetyl fluoride and R170 at normal temperature, and the components and properties of a refrigerant prepared by the composition are shown in Table 1. Example 6 has an increased COP value and a decreased GWP value compared to comparative example 5, indicating that the refrigerant is more energy efficient under this condition. Example 6 has an increased COP value and a decreased GWP value, and an increased refrigerating capacity per unit volume, as compared with comparative example 6, mainly because the refrigerating capacity per unit volume of trifluoroacetyl fluoride itself is superior to R23.
Comparative example 1-comparative example 6
The existing refrigerants, and the performance of each refrigerant are shown in table 1.
TABLE 1 composition and Properties of the refrigerants in examples and comparative examples
In conclusion, as the trifluoroacetyl fluoride is low in toxicity and non-corrosiveness, the normal pressure boiling point is minus 59 ℃, and the trifluoroacetyl fluoride is in a blank area of the normal pressure boiling point of the existing refrigerant, so that the blank of the medium and low Wen Wenou of the use temperature of the refrigerant under normal pressure can be filled; the GWP of the refrigerant is 0, the refrigerant can be compounded with the existing refrigerant, the obtained composition has the GWP lower than 150, and meanwhile, the higher refrigerating capacity per unit volume and COP value are maintained, so that the refrigerant is expected to play an important role in the refrigeration field as a new-generation refrigerant.
Claims (10)
1. Use of trifluoroacetyl fluoride in the field of refrigerants.
2. A trifluoroacetyl fluoride-containing low GWP value composition is characterized in that the composition comprises trifluoroacetyl fluoride and a component A, wherein the component A is selected from the group consisting of compounds with a general formula of C n F x H y At least one of (a) and (b); the trifluoroacetyl fluoride content is greater than or equal to 50wt%, where n=1, 2 or 3, y is greater than or equal to 1, and x+y=2n or 2n+2.
3. The composition of claim 2, wherein component a is selected from the group consisting ofIs C n F x H y Wherein n=1, 2 or 3, y is ≡1, x+y=2n or 2n+2.
4. A composition according to claim 3, wherein component a is selected from any one of R32, R125, R1270, R170 and R152 a.
5. The composition according to claim 2, wherein the trifluoroacetyl fluoride content is 50-99 wt%.
6. The composition according to any one of claims 2 to 5, wherein the composition has an atmospheric boiling point of-40 to-85 ℃.
7. Use of a composition according to any one of claims 2 to 6 in a refrigerant.
8. A refrigerant comprising the composition of any one of claims 2 to 6, wherein the refrigerant has a GWP value of not more than 150, an odp of 0, a cop value of 0.8 to 2, and an evaporation temperature of-40 to-85 ℃; preferably, the evaporation temperature of the refrigerant is-40 to-83 ℃.
9. The refrigerant of claim 8, further comprising a functional aid selected from at least one of a resist, a stabilizer, a lubricant, an indicator, and a fluorescent leak detector.
10. The refrigerant according to claim 9, wherein the functional auxiliary agent is contained in an amount of 0.01 to 3wt%.
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