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Environment-friendly type refrigerating machine oil composition

A technology for refrigerating machine oil and composition, applied in the directions of lubricating composition, petroleum industry, base material, etc., can solve the problem of not using Fischer-Tropsch synthetic wax lubricating oil, etc., and achieve good thermal oxidation stability, good mutual solubility, and low flocculation. point effect

Active Publication Date: 2009-04-01
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] So far, there is no report on the use of Fischer-Tropsch synthetic wax as a base oil for refrigerators

Method used

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  • Environment-friendly type refrigerating machine oil composition
  • Environment-friendly type refrigerating machine oil composition

Examples

Experimental program
Comparison scheme
Effect test

example 1

[0029] Waxes are synthesized from syngas by Fischer-Tropsch reaction over cobalt-thorium catalysts, and the distribution of wax products is as follows:

[0030] <200°C Fraction Mass Percent %: 22

[0031] 200-320 ° C fraction mass percent %: 24

[0032] 320-460 ° C fraction mass percent %: 21

[0033] >460°C Fraction Mass Percent %: 33

[0034] Distill the fraction above 320°C to obtain the following product properties: melting point >100°C, oil content 0, sulfur content 0, nitrogen content 0, oxygen content <0.34, metal content: traces. Normal paraffin content: 90%, isoparaffin content 10%, aromatic content 0.

[0035] The above fractions were subjected to isomerization reaction in a platinum-fluorine modified alumina catalyst fixed bed reactor, the specific conditions were as follows: isomerization temperature 350°C, hydrogen partial pressure 6.8MPa, liquid hourly space velocity 1.0H -1 . Lubricating oil is obtained after the isomerization reaction, and the product dist...

example 2

[0041] Mix fraction 3 and fraction 4 of Example 1 according to the weight ratio of 30:70, the total weight accounts for 80% of the base oil, and then add 4% 2 / s, freezing point -34 DEG C of alkylbenzene and 16% mineral oil (from China Petroleum Karamay Lubricating Oil Factory, naphthene content (CP%) > 40wt%, adjusted to 40 DEG C kinematic viscosity 51.22mm 2 / s refrigerating machine oil base oil A.

example 3

[0043] Mix the above fraction 3 and fraction 4 according to the weight ratio of 28:72, the total weight accounts for 82% of the base oil, and then add 6% 2 / s, freezing point -31°C alkylbenzene and 14% polyalphaolefin synthetic oil second-line oil (from PetroChina Lanzhou Lubricating Oil Factory), adjusted to 40°C kinematic viscosity 50.34mm 2 / s base oil B.

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Abstract

The invention provides a refrigerating machine oil compound which comprises the following components on the basis of base oil weight: 1) 10 to 90 wt percent of fischer-tropsch syntholube base oil; 2) 1 to 10 wt percent of alkyl benzene and / or alkyl benzene lube base oil; 3) 5 to 85 wt percent of mineral oil and / or poly alpha olefins synthetic base oil; 4) effective quantity of surfactant; and 5) effective quantity of additive. The refrigerating machine oil and a refrigerant containing halogen provided by the invention have the advantages of good intersolubility, higher viscosity index, lower flock point and good thermal oxidation stability, and are particularly suitable for the refrigerating machine oil taking hydrofluorocarbon (HCF) as a refrigerant and the refrigerating machine oil taking chlorofluorocarbon (CFS) or low-molecular alkane as a refrigerant.

Description

technical field [0001] The invention belongs to refrigerating machine oil composition. Background technique [0002] The refrigerating machine oil composition is mainly used in refrigerator compressors and air-conditioning compressors, and generally includes base oil and additives. When the compressor is working, the refrigerating machine oil composition and refrigerant need to be mixed to achieve a completely miscible state. Therefore, it is required that the refrigerating machine oil has excellent low-temperature fluidity and lubricity, and the refrigerant does not pollute the environment. Due to the destruction of the ozone layer in the atmosphere by the traditional refrigerant R12 (chlorofluorocarbon), it is prohibited to be used in refrigeration oil according to the Montreal Convention. Alternatives to R12—hydrofluorocarbons, such as R134A (1,1,1,2-tetrafluoroethane), R152A (1,1-difluoroethane), R143A (1,1,1-trifluoroethane ), R125 (1,1,1,2,2-pentafluoroethane) and ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M169/04C10M101/02C10M107/02C10M145/26C10N20/02C10N40/30
Inventor 刘依农
Owner CHINA PETROLEUM & CHEM CORP
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