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Screw-type ammonia compressor oil composite

A compressor oil and composition technology, applied in lubricating compositions, petroleum industry, additives, etc., can solve problems such as poor oxidation resistance and short service life of oil products, and achieve excellent viscosity-temperature properties, good technical effects, excellent The effect of oxidation stability

Inactive Publication Date: 2013-04-10
CHINA PETROLEUM & CHEM CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0008] The technical problem to be solved by the present invention is that in the prior art, when there is cuproammonia liquid mixed with ammonia gas, the oil composition of the screw type ammonia compressor has poor oxidation resistance and short service life of the oil, and a new Screw type ammonia compressor oil composition

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～7

[0018] According to the parts by weight in Table 1, take the required amount of antioxidants, extreme pressure antiwear agents, metal passivators, rust inhibitors, antifoaming agents and pour point depressants respectively and add them to the base oil. ℃, heated and stirred until completely uniform to obtain the screw ammonia compressor oil composition. The type and amount of each component in the composition are specifically shown in Table 1.

[0019] Among them, T511 is 4,4-methylene bis(2,6-di-tert-butylphenol), T512 is 3,5-di-tert-butyl-4-hydroxyphenyl acrylate, and L-57 is alkylated Diphenylamine, T531 is phenyl-α-naphthylamine, T803B is polyalphaolefin, T602 is polyacrylate. The extreme pressure antiwear agent is tricresyl phosphate, the metal passivator is N, N-dialkylaminomethylene benzenetriazole, the rust inhibitor is basic dinonyl naphthalene sulfonate barium, and the antifoaming agent is It is a copolymer of acrylate and ether.

Embodiment 2

[0021] The oxidation resistance of the composition of [Examples 1-7] was tested by cupro ammonia simulation test. The test conditions are: 100 ml of test oil and cuproammonia solution, the test temperature is 50°C, the compressed air with a gauge pressure of 19.6kPa is introduced, the mixture of test oil and cuproammonia solution is stirred, and the pressure and temperature are maintained for 6 hours. The test results are shown in Table 2.

[0022] Other properties of the test oil, viscosity-temperature, anti-foam, oil-water separation, extreme-pressure anti-wear and anti-rust and anti-corrosion properties, were not affected.

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Abstract

The invention relates to a screw-type ammonia compressor oil composite, which mainly solves the technical problems of poor resistance to oxidation and short oil product service life of the screw-type ammonia compressor oil composite under the condition that cuprammonia is mixed with ammonia in the prior art. The screw-type ammonia compressor oil composite comprises the following ingredients in parts by weight: 100 parts of mineral base oil and 0.01-2 parts of antioxygen, wherein the antioxygen consists of phenol-type antioxygen and ammonia-type antioxygen; the phenol-type antioxygen is selected from at least one of 4,4-methylenebis (2,6- di-tert-butyl phenol), 3,5-di-tert-butyl-4-hydroxy phenyl acrylic ester or quadri[beta(3,5-di-tert-butyl-4-hydroxy phenyl) propionic acid] pentaerythritol ester; and the ammonia-type antioxygen is selected from at least one of phenyl-alpha-naphthylamine, alkylating phenyl-alpha-naphthylamine and octyl butyl diphenylamine or alkylating diphenylamine. According to the technical scheme, the problem is favorably solved, and the technical scheme can be used for the industrial production of the screw-type ammonia compressor oil composite.

Description

technical field [0001] The invention relates to a screw type ammonia compressor oil composition. Background technique [0002] Ammonia compressor is a device for conveying and increasing pressure during the production, storage and use of ammonia gas. Among them, screw ammonia compressor has simple structure, few wearing parts, long inspection period, high volumetric efficiency and low exhaust temperature. , It is not sensitive to liquid shock, and has been widely used. [0003] The main function of the screw ammonia compressor oil is three aspects: one is to absorb a large amount of compression heat generated by the compression of the gas, to cool the surface of the compressed air and related moving friction parts, so that the exhaust temperature will not be too high, It will not cause abnormal wear due to different thermal expansion coefficients; the second is to form an oil film on the friction surface of the rotor, cylinder and end cover for lubrication to reduce frictio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C10M161/00C10M141/06C10M141/10C10M141/08C10N30/10
Inventor 益梅蓉施东学周霞潘健何晓瑛孔吉霞
Owner CHINA PETROLEUM & CHEM CORP
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