Refrigeration machine oil composition and application thereof

A refrigeration oil and composition technology, applied in the field of lubricating oil, can solve the problems of poor high-temperature thermochemical stability, low-temperature fluidity, and limited scope of application of refrigerants, and achieve good chemical stability, high viscosity index, and low flocculation point Effect

Active Publication Date: 2016-11-23
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] CN1054154C discloses a kind of refrigerating machine oil composition, contains viscosity 10-150mm 2 / s soft wax cracking C5-C18 mixed α-olefin polymer oil, which can also add epoxy compound stabilizer, phosphate ester lubricant and phenolic antioxidant, the oil has good miscibility with hydrochlorofluorocarbons, The flocculation point is low, but there are problems of low viscosity index, poor low-temperature fluidity, and poor high-temperature thermochemical stability of R22 refrigerant
The refrigerating machine oil composition provided by the invention can achieve the purpose of reducing viscosity and improving energy saving, but the scope of application is limited to hermetic refrigerating machines

Method used

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  • Refrigeration machine oil composition and application thereof

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Experimental program
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Effect test

Embodiment 1

[0042] Use 47% polyalphaolefin synthetic engine oil second-line oil (from China Petroleum Lanzhou Lubricating Oil Factory), 50% naphthenic high-pressure hydrogenation minus third-line mineral oil (from Karamay Petrochemical Company), and then add 3% boiling point at 250 ° C Above, 100℃ kinematic viscosity 7.42mm 2 / s, pour point -42°C, viscosity index of 105 alkylbenzene synthetic base oil, adjusted to kinematic viscosity of 62.57mm at 40°C 2 / s base oil a.

Embodiment 2

[0044] Use 67% polyalphaolefin synthetic engine oil third-line oil (from China Petroleum Lanzhou Lubricating Oil Factory), 30% naphthenic high-pressure hydrogenation minus third-line mineral oil (from Karamay Petrochemical Company), and then add 3% boiling point at 250 ° C Above, 100℃ kinematic viscosity 7.42mm 2 / s, pour point -42°C, viscosity index of 105 alkylbenzene synthetic base oil, adjusted to kinematic viscosity of 62.93mm at 40°C 2 / s base oil b.

Embodiment 3

[0046] Use 55% polyalphaolefin synthetic engine oil PAO8 (from commercially available Mobil products), 42% naphthenic high-pressure hydrogenation minus second-line and minus three-line mineral oils (from Karamay Petrochemical Company), and then add 3% boiling point at 250 ° C Above, 100℃ kinematic viscosity 7.42mm 2 / s, pour point -42°C, viscosity index of 105 alkylbenzene synthetic base oil, adjusted to kinematic viscosity of 62.85mm at 40°C 2 / s base oil c.

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Abstract

The invention provides a refrigerating machine oil composition and its application, which comprises the following components based on the weight of the base oil: (1) 35-75wt% polyalphaolefin synthetic lubricating oil base oil; (2) 20-60wt% naphthene Base mineral lubricating oil base oil, the naphthenic mineral lubricating oil base oil is obtained by adopting "hydrodemetallization-hydrotreating-hydrogen decondensation-supplementary refining" high-pressure series all-hydrogen process technology; (3) 1-5 wt% alkylbenzene synthetic lubricant base oil; (4) additives. The refrigerating machine oil provided by the invention has good chemical stability with ammonia refrigerant (such as R717), and has a higher viscosity index, lower flocculation point and good thermal oxidation stability, and is especially suitable for ammonia refrigerant Refrigeration machine oil can also be used for refrigeration machine oil with fluorocarbons, hydrochlorofluorocarbons, and isobutane as refrigerants, which can achieve the purpose of reducing low-temperature viscosity, improving energy saving, and has excellent anti-wear performance.

Description

technical field [0001] The invention belongs to the technical field of lubricating oil, and relates to a refrigerating machine oil composition for a cryogenic compressor unit. Background technique [0002] The continuous promotion of national environmental protection regulations has caused major changes in the types of refrigerants used in the refrigeration industry. The use of chlorofluorocarbons (CFCs) refrigerants is strictly restricted, and hydrochlorofluorocarbons (HCFCs, such as R22) with low OPD (ozone layer depletion potential) and small GWP (global warming potential) ), hydrofluorocarbons (HFCs, such as R134a), hydrocarbons (HCs, such as R600a), ammonia (such as R717) and carbon dioxide refrigerants have been used in the refrigeration industry. Among the various refrigerants, R717, R22, and R600a are the most widely used refrigerants in the refrigeration industry. [0003] The development of large and medium-sized refrigeration compressor units is closely related ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M111/04C10N40/30C10N20/02
Inventor 王鹏李雁秋张宜涛张秀娟蒙猛
Owner PETROCHINA CO LTD
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