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Refrigerating machine oil composition and application thereof

A technology of refrigeration oil and composition, applied in lubricating composition, petroleum industry and other directions, can solve the problems of valve plate and piston corrosion, affecting the service life and efficiency of refrigeration compressors, poor viscosity-temperature performance, etc., to prevent acid and oil contamination, etc. , the effect of excellent oxidation stability, excellent viscosity-temperature performance

Inactive Publication Date: 2016-01-20
湖北海拓化工科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Among these refrigerating machine oil compositions, naphthenic mineral oil has the advantages of good low-temperature performance and excellent compatibility with hydrocarbon refrigerants, but poor viscosity-temperature performance and low flash point of low-viscosity oils; polyalphaolefin is a synthetic oil , the overall performance is better than that of naphthenic oil, but the miscibility between polyalphaolefin and polar additives is average, additive precipitation may occur in the refrigeration system, which may cause circulation blockage or affect the heat transfer efficiency of the refrigeration system; alkylbenzene is a synthetic Oil is more suitable for hydrocarbon refrigerants. The refrigerating machine oil composition disclosed in CN101228255A patent uses at least 80wt% alkyl phenyl oil with a molecular weight of 120~288, and its kinematic viscosity at 40°C is 3.0~7.0mm 2 / s, and contains 8wt% additives
This refrigerating machine oil has excellent low-temperature performance and good compatibility with hydrocarbon refrigerants, but its high-temperature performance and oxidation resistance are not as good as those of polyalphaolefins, and it is easy to produce coke and acidic substances under continuous high temperature and high pressure. Even adding antioxidants can only maintain After a period of time, when the anti-oxidants fail, the refrigeration oil will deteriorate rapidly
[0005] In the refrigeration oil composition, the viscosity-temperature performance, oxidation stability and corrosion resistance of the oil depend on the characteristics of the base oil. Under the long-term high-temperature and high-pressure operation of the refrigeration compressor, the oil will deteriorate rapidly, and the carbon deposits will be Affect the airtightness of the compressor, and the acid produced will cause corrosion of the valve plate and piston, etc., which will completely affect the service life and efficiency of the refrigeration compressor

Method used

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  • Refrigerating machine oil composition and application thereof
  • Refrigerating machine oil composition and application thereof
  • Refrigerating machine oil composition and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0037] The component content of the refrigerating machine oil composition described in Example 1 is: select a combination ratio of 1, 1.6% of triphenyl phosphate extreme pressure antiwear agent, 0.298% of phenyl-β-naphthylamine antioxidant, 1% of Ethylene glycol oleate oily agent, 0.1% N,N~dialkylaminomethylene benzotriazole corrosion inhibitor, 0.002% simethicone antifoam agent, mix the above raw materials evenly, heat to 45 About ℃, 0.5×10 -3 Vacuum dehydration under Pa, about 3 hours. Test the moisture content of the refrigerating machine oil. If the moisture content is lower than 20ppm, the sample is qualified and sealed to make sample 1.

Embodiment 2

[0038] The component content of the refrigerating machine oil composition described in Example 2 is: select a combination ratio of 2, 1.6% of triphenyl phosphate extreme pressure antiwear agent, 0.298% of phenyl-β-naphthylamine antioxidant, 1% of Ethylene glycol oleate oily agent, 0.1% N,N~dialkylaminomethylene benzotriazole corrosion inhibitor, 0.002% simethicone antifoam agent, mix the above raw materials evenly, heat to 45 About ℃, 0.5×10 -3 Vacuum dehydration under Pa, about 3 hours. Test the moisture content of the refrigerating machine oil. If the moisture content is lower than 20ppm, the sample is qualified and sealed to make sample 2.

Embodiment 3

[0039] The component content of the refrigerating machine oil composition described in Example 3 is: select a combination ratio of 3, 1.6% of triphenyl phosphate extreme pressure antiwear agent, 0.298% of phenyl-β-naphthylamine antioxidant, 1% of Ethylene glycol oleate oily agent, 0.1% N,N~dialkylaminomethylene benzotriazole corrosion inhibitor, 0.002% simethicone antifoam agent, mix the above raw materials evenly, heat to 45 About ℃, 0.5×10 -3 Vacuum dehydration under Pa, about 3 hours. Test the moisture content of the refrigerating machine oil. If the moisture content is lower than 20ppm, the sample is qualified and sealed to make sample 3.

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Abstract

The invention relates to a refrigerating machine oil composition and application thereof. The refrigerating machine oil composition has the good compatibility with a mixture of a hydrocarbon refrigerant and an optional hydrocarbon refrigerant and has the high viscosity index, low pour point, good oxidation resistance and good cleanliness. The invention further provides application of the refrigerating machine oil composition in a refrigeration compressor of the mixture of the hydrocarbon refrigerant and the optional hydrocarbon refrigerant as a lubricant. The refrigerating machine oil composition is prepared from, by weight, 80.0-99.5% of base oil and 0.5-20% of lubricant additives. The base oil comprises, by weight, 20-80% of alkylbenzne and the balance alkylene glycol on the basis that the base oil accounts for 100%. The kinematic viscosity of the refrigerating machine oil composition is 2-200 mm<2> / s at the temperature of 40 DEG C.

Description

technical field [0001] The invention relates to a refrigerating machine oil composition, which is a refrigerating machine oil composition suitable for isobutane, propane or a mixture of isobutane and propane as a refrigerant. Background technique [0002] The working principle of the compression refrigeration system is to use the refrigerant to vaporize and volatilize, absorb the heat of the surrounding medium, reduce the temperature for cooling, and then compress the refrigerant through the refrigeration compressor, dissipate heat and liquefy the condenser, and then re-vaporize in the evaporator , and so on. The refrigerating machine oil that plays the role of lubrication, heat dissipation, sealing, anti-corrosion and noise reduction in the compressor has a significant impact on the performance and life of the compressor and the refrigeration system. Therefore, it is very important to choose a refrigerating machine oil with excellent performance for the compression refriger...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10N40/30C10N30/04C10N30/10
Inventor 刘春芳
Owner 湖北海拓化工科技有限公司
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