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Environmentally-friendly mixed refrigerant for replacing HCFC-22

A technology of HCFC-22 and mixed refrigerants, which is applied in the direction of heat exchange materials, chemical instruments and methods, etc., can solve the problems of high flammability and high GWP value, and achieve good environmental performance, low GWP value, and excellent thermal performance. Effect

Active Publication Date: 2018-05-04
XIAN MODERN CHEM RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The refrigerants disclosed in the above-mentioned patents have disadvantages such as not being able to be directly filled into tanks and applied to HCFC-22 systems, or having a high GWP value, or having relatively high flammability. Compatibility and new refrigerants with better environmental performance

Method used

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  • Environmentally-friendly mixed refrigerant for replacing HCFC-22
  • Environmentally-friendly mixed refrigerant for replacing HCFC-22
  • Environmentally-friendly mixed refrigerant for replacing HCFC-22

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The preparation of the environmentally friendly mixed refrigerant is carried out in a 200ml stainless steel balance kettle with stirring. First place the balance kettle in a low-temperature tank to freeze, and set the temperature of the low-temperature tank to -20°C, and add 11.4g of 2,3,3,3-tetrafluoropropene and 56.7g of 1,1,2-trifluoroethylene to the balance in sequence After the sample filling is completed, start the balance tank to stir, cool down to -40°C, keep stirring for 2 hours, and control the pressure of the balance tank within 0.2MPa, so that 3,3,3-trifluoropropene and 1,1,2-trifluoropropene Ethylene is mixed in a liquid phase state. After the treatment process, a mixed refrigerant is obtained, wherein the molar percentage of 2,3,3,3-tetrafluoropropene is 10%, and the molar percentage of 1,1,2-trifluoroethylene is 90%.

Embodiment 2～3

[0022] Examples 2-3 The preparation method of the environmentally friendly mixed refrigerant is similar to that of Example 1, except that the molar percentages of 2,3,3,3-tetrafluoropropene and 1,1,2-trifluoroethylene are changed, specifically The amount used is shown in Table 1.

[0023] Table 1

[0024]

Embodiment 4

[0026] The preparation of the environmentally friendly mixed refrigerant is carried out in a 200ml stainless steel balance kettle with stirring. First place the balance kettle in a low-temperature tank to freeze, set the temperature of the low-temperature tank to -20°C, and add 48g of 3,3,3-trifluoropropene and 31.5g of 1,1,2-trifluoroethylene to the balance in sequence After the sample filling is completed, start the balance tank to stir, cool down to -40°C, keep stirring for 2 hours, and control the pressure of the balance tank within 0.2MPa, so that the above components are mixed in the liquid phase. After the treatment process, a mixed refrigerant is obtained, wherein the molar percentage of 3,3,3-trifluoropropene is 50%, and the molar percentage of 1,1,2-trifluoroethylene is 50%.

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Abstract

The invention provides an environmentally-friendly mixed refrigerant I. The environmentally-friendly mixed refrigerant I is characterized in that 1, 1, 2-trifluoroethylene, 1, 1-difluoroethylene, 1, 1, 2, 3, 3, 3-hexafluoropropylene, 1, 1-difluoromethane and other substances are added to trifluoropropene or tetrafluoropropene, thus the direct filling performance of the mixed refrigerant in an airconditioning system is improved. Additionally, the invention also provides an environmentally-friendly mixed refrigerant II. The environmentally-friendly mixed refrigerant II is characterized in that1, 1, 2, 2-tetrafluoroethane, 1, 1, 1, 2-tetrafluoroethane, 1, 1, 1, 2, 2-pentafluoroethane, 1, 1, 1, 2, 3, 3, 3-heptafluoropropane, trifluoroiodomethane, etc. are added in the abovementioned mixture,thus the flammability of the refrigerant is reduced. The invention also provides an environmentally-friendly mixed refrigerant III. The environmentally-friendly mixed refrigerant III is characterizedin that AlF3, FeF3, MgF2 and CuO nanoparticles are added in the abovementioned mixture, so that the intermiscibility of the refrigerant and mineral frozen engine oil can be improved.

Description

technical field [0001] The invention relates to a mixed refrigerant, in particular to a novel environment-friendly mixed refrigerant used in an air-conditioning system to replace HCFC-22. Background technique [0002] Among hydrochlorofluorocarbon (HCFC) refrigerants, HCFC-22 has the advantages of non-flammability, non-toxicity, non-corrosion and excellent thermal performance, and is widely used in household air conditioners and other refrigeration fields. However, HCFC-22 not only has a certain destructive effect on the atmospheric ozone layer, but also has a high greenhouse effect potential (GWP), which has a strong greenhouse effect. [0003] In recent years, the voice of global warming has become more and more intense. In order to cope with climate change, countries around the world are stepping up the process of replacing HCFC-22 refrigerant. In the "Montreal Protocol on Substances that Deplete the Ozone Layer" signed in 1987, the production and consumption limits of C...

Claims

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Application Information

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IPC IPC(8): C09K5/04
CPCC09K5/045C09K2205/22C09K2205/43
Inventor 杨志强吕剑唐晓博张伟赵波郝志军亢建平李凤仙
Owner XIAN MODERN CHEM RES INST
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