Alternative R-134A refrigerant for vehicle and preparation method of refrigerant

A refrigerant and raw material technology, applied in chemical instruments and methods, heat exchange materials, sustainable manufacturing/processing, etc., can solve the problems of high drying and cleaning requirements of the refrigeration system, lack of environmental protection features, and unfavorable refrigeration systems. Achieve the effects of avoiding economic loss, good energy saving effect, and large latent heat of evaporation

CN107400502AInactive Publication Date: 2017-11-28湖北瑞能华辉能源管理有限公司
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2017-11-28
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses an alternative R-134A refrigerant for a vehicle and a preparation method of the refrigerant. The refrigerant is prepared by mixing the following raw materials in parts by weight: 29-62 parts of difluoromethane, 32-58 parts of propylene and 10-40 parts of trifluoroiodomethane. The preparation method comprises the following steps: S1, detecting the purity of each raw material; S2, cleaning a pressure vessel by using a cleaning reagent; S3, vacuumizing the pressure vessel; S4, adding the raw materials reaching the standard into the pressure vessel in parts by weight and mixing so as to obtain the mixed materials; and S5, sampling the mixed materials in S4, and detecting whether the components in the materials meet the corresponding weight ratio. According to the alternative R-134A refrigerant for the vehicle, provided by the invention, no original refrigeration plant needs to be replaced, the refrigerant can be used without adjustment, the transformation cost is greatly saved, the energy-saving effect is excellent, and the energy is saved by 8-12% compared with the original R-134A refrigerant.
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Description

technical field

[0001] The invention belongs to the field of refrigerants, and in particular relates to a refrigerant replacing R-134A for vehicles and a preparation method thereof. Background technique

[0002] Since the signing of the "Montreal Protocol", countries have launched research on energy-saving and environmentally friendly automotive refrigerants. During this period, the alternative refrigerants proposed are mainly for the purpose of protecting the ozone layer, and the development of HFCs refrigerants is one of the hot topics. But after the "Kyoto Protocol" was signed, people turned to focus on the protection of the ozone layer and the reduction of the greenhouse effect at the same time, not only requiring the ODP of the refrigerant to be zero, but also the GWP to be small.

[0003] R461 not only has a very low GWP, but also is a new type of energy-saving, environmentally friendly and promising refrigerant among many automotive refrigerants. When the ternary mix...

Examples

Embodiment 1

[0031] A refrigerant that replaces R-134A for vehicles, which is made by fully mixing the following raw materials in parts by weight:

[0032] 48.58 parts of difluoromethane; 36.75 parts of propylene; 14.67 parts of trifluoroiodomethane.

[0033] Its preparation method is as follows:

[0034] S1. Detect the purity of difluoromethane, propylene, and trifluoroiodomethane raw materials respectively to ensure that the purity reaches more than 99.96wt, and set aside;

[0035] S2. Use propylene with a purity up to the standard in S1 as the cleaning reagent to clean the pressure vessel. The cleaning reagent is input into the pressure vessel with a high-pressure pump. The volume of the cleaning reagent accounts for about 3% of the volume of the pressure vessel. Shake the pressure vessel or stir the cleaning reagent in it. , fully cleaned, drain the propane after cleaning, and let it stand still to evaporate the residual propane, then the cleaning of the pressure vessel is completed; ...

Embodiment 2

[0040] A refrigerant for replacing R-134A used in vehicles is prepared by fully mixing the following raw materials in parts by weight: 42.56 parts of difluoromethane; 46.87 parts of propylene; and 10.57 parts of trifluoroiodomethane.

[0041] Its preparation method is identical with embodiment 1.

Embodiment 3

[0043] A refrigerant for substituting R-134A for vehicles is prepared by fully mixing the following raw materials in parts by weight: 39.67 parts of difluoromethane; 50.12 parts of propylene; and 10.21 parts of trifluoroiodomethane.

[0044] Its preparation method is identical with embodiment 1.