CN1223660C - Compsn. of lubricating oil for steam turbine with long service life - Google Patents
Compsn. of lubricating oil for steam turbine with long service life Download PDFInfo
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- CN1223660C CN1223660C CN02141795.4A CN02141795A CN1223660C CN 1223660 C CN1223660 C CN 1223660C CN 02141795 A CN02141795 A CN 02141795A CN 1223660 C CN1223660 C CN 1223660C
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- lubricating oil
- steam turbine
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Abstract
The present invention relates to a composition of lubricating oil for a steam turbine with long service life, which comprises (A) 90 wt% to 99 wt% of base oil with the characteristic of containing 0.3 wt% of sulfur and under 90 wt% of saturated hydrocarbon, (B) 0.1 wt% to 3 wt% of shielding phenol antioxidant, (C) 0.1 wt% to 3 wt% of peroxide decomposer, (D) 0.1 wt% to 3 wt% of metal deactivator and (E) 0.1 wt% to 3 wt% of a neutral antirust agent. The composition of lubricating oil for a steam turbine with long service life not only has prominent anti-oxidation property, but also has good anti-rust ability. The oxidation life time can superlatively reach more than 9000 hours.
Description
Technical field
The invention belongs to petrochemical industry, relate to a kind of long lifetime turbine oil specifically, it is to be combined by a kind of or more than one lubricant bases and oxidation inhibitor, metal passivator, rust-inhibiting additive.
Background technology
Along with the manufacturing development of domestic steamer state's machine, Steam Turbine develops to high temperature, high pressure, high rotating speed and large vol direction, makes that the oily temperature in the steam turbine is also more and more higher, thereby needs to use anti-oxidant fabulous turbine oil.Environmental protection and mechanical long-term operation require to prolong the oil draining period, promptly prolong the work-ing life of machine oil.In the work-ing life of turbine oil, depend on that the existence etc. of operating temperature, pressure, contact condition and water of steam turbine is all multifactor.These factors play a driving role with going bad to the oxidation of oil product, and oil product after oxidation generates compounds such as superoxide, carboxylic acid, ester class, continue deterioration by oxidation and then generate the greasy filth that is insoluble to oil, easy damage equipment, the work-ing life of shortening oil product and equipment.Therefore the development of carrying out anti-oxidant fabulous long lifetime turbine oil is very necessary, can satisfy the oily requirement of some steam turbine on the one hand, and China's turbine oil quality is improved, and catches up with international most advanced level.Adopt ASTM D943 method simulation oil product real machine operation operating mode in the laboratory, good corresponding relationship is arranged the work-ing life of its test-results and turbine oil.The antirust turbine oil of China was generally 1500 hours with the oxidation life-span that ASTM D943 method records at present, reached as high as more than 3000 hours.In the U.S., turbine oil was generally 2500 hours with the oxidation life-span that ASTM D943 records, and high reached more than 10000 hours.The long lifetime turbine oil of our development except that require to have L-TSA, the general property of L-TGA, special requirement have fabulous anti-oxidative stability, that is the time that ASTM D943 oxidation test total acid value reaches 2.0mgKOH/g was not less than 4000 hours.It is external at present that the domestic antioxygen that is used for turbine oil---rust-proof type composite additive kind in the sixth of the twelve Earthly Branches is various, for example: number of patent application is that the patent of invention of 98117814.6 " composite additives that are used for turbine oil " has possessed good advantage: not only have outstanding antioxidant properties, also have good rustless property, its component (1) is liquid shielding phenol oxidation inhibitor and methene-two (dibutyl dithiocaarbamate esters); (2) be liquid shielding phenol oxidation inhibitor, methene-two (dibutyl dithiocaarbamate ester) and dodecenylsuccinic acid rust-preventive agent; " turbine oil " usefulness that number of patent application is 99121597.4 with excellent pyritous oxidative stability be that (A) very low sulphur content (0.03% massfraction) and high saturates content (greater than 90% massfraction) are the base oil of feature, the additive of adding has (B) alkylated diphenylamine and/or nonox; (C) olefine sulfide and/or sulfide aliphatic acid and/or ash-free dithiocarbamates and/or curing alkyl autumn are blue female; (D) neutral rust-preventive agent demonstrates superior oxidative stability, and for turbine oil with get rusty and the use of thickened oil provides sufficient corrosion protection effect and the effect of control sludge.The present invention is that the employing base oil is the turbine oil of sulphur content more than 0.3%, and the patent No. is 99121597.4 to be to adopt very low sulphur content (0.03% massfraction) and high saturates content (greater than 90% massfraction) to be the base oil of feature, the present invention is that to utilize the patent No. be the additive of the composite additive of 98117814.6 turbine oil for technical characterictic, a kind of long-acting long lifetime turbine oil of developing.
Summary of the invention
The object of the present invention is to provide a kind of long-acting long lifetime turbine oil, not only have outstanding antioxidant property, also have good rustless property, the oil oxidation life-span was up to more than 9000 hours.
Another object of the present invention is to utilize the light 150N base oil of Saudi Arabia or hydrogenation 150N base oil or the light 150N of Saudi Arabia and the hydrogenation 150N blended base oil of Maoming petro-chemical corporation production, add shield phenol type antioxidant, peroxide decomposer, metal passivator, neutral rust-preventive agent, make turbine oil in use can both reach the key technical indexes requirement.
Technical scheme of the present invention is as follows: this long lifetime turbine oil composition comprises following composition:
(A) with more than the sulphur content 0.3wt%, saturated hydrocarbon content is lower than the base oil that 90wt% is a feature, 90wt%～99wt%; (B) as the 2,6 ditertiary butyl p cresol of shield phenol type antioxidant, 0.1wt%～0.25wt%; (C) as the phosphorous acid ester of peroxide decomposer, 0.1wt%～0.2wt%; (D) as the derivative of the 124 Triazole of metal passivator, 0.01wt%～0.05wt%; (E) as the dodecenylsuccinic acid ester of neutral rust-preventive agent, 0.01wt%～0.05wt%; The lubricating oil composition that combines.
(A) Japanese Patent JP2284994A has proposed aromatic hydrocarbons≤1% to the turbine oil base oil, S≤5ppm, the requirement of N≤1ppm; JP435994A has proposed more detailed requirement to basic oil composition: aromaticity content scope 2～15%, and isoparaffin and single-ring naphthene account for stable hydrocarbon 60%, and alkylbenzene accounts for total aromatic hydrocarbons at least 30%, three rings and Fourth Ring aromatic hydrocarbons is at most 4% of aromatic hydrocarbons total amount; VI 〉=105.In conjunction with my company's raw material sources major part is Middle East oil condition, for fully developing new oil sources and reducing cost, we mix the light base oil of Saudi Arabia with hydrogenated base oil, the physicochemical property of Saudi Arabia's light oil and use properties are improved, as the base oil of turbine oil.Saudi Arabia's light 150N base oil sulphur content that my company produces is up to more than 0.5%, can be with the light 150N of Saudi Arabia separately as base oil, also the mixed that the light 150N of Saudi Arabia and hydrogenation 150N can be pressed 50+50 (massfraction) obtains the moderate base oil of sulphur content.These two kinds of basic oil propertiess see Table 1.
The physicochemical property of the different sulphur content base oils of table 1
The light 150N of hydrogenation 150N/ Saudi Arabia
Form and the light 150N of ratio Saudi Arabia
50/50
V
40，mm
2/s 30.78 30.72
Viscosity index 103 102
Sulphur content, % (m/m) 0.47 0.19
Alkali nitrogen, mgKOH/kg 4.93 0.59
Stable hydrocarbon % (m/m) 76.74 79.76
Aromatic hydrocarbons % (m/m) 22.54 19.75
Colloid % (m/m) 0.72 0.49
Oxygen bomb ,+0.8%T501, min 235 250
Phosphorous acid ester as peroxide decomposer can be tricresyl phosphate (2, the 4-di-tert-butyl-phenyl) ester particularly.
Embodiment
The superiority of long lifetime turbine oil provided by the present invention is that the oxidation life-span is long, is up to more than 9000 hours, and this turbine oil not only has excellent anti-oxidative stability, also has good rustless property, and concrete effect is referring to table two.
Three most preferred embodiment physicochemical property evaluations of table 2
Project implementation example 4 embodiment 5 embodiment 6 GBs
V
40，mm
2/s 33.77 33.94 33.94 28.8～35.2
Viscosity index 133 114 114 is not less than 90
Pour point, ℃-12-10-10 are not higher than-7
Flash-point (opening), ℃ 235 207 207 are not less than 180
Density (20 ℃), kg/m
30.8356 0.8395 0.8395 reports
Neutralization value, mgKOH/g 0.19 0.20 0.20 report
The deemulsification value,
(40-37-3) mL 6.25 8.58 9 is not more than 15
54℃，min
Anti-bubble, mL/mL is not more than 450/0 for 24 ℃ 8,5/0 7,0/0 70/0
93.5 ℃ 2,0/0 2,5/0 25/0 is not more than 10/0
The back is not more than 450/0 for 24 ℃ 7,0/0 3,0/0 40/0
Moisture, % (m/m) does not have
Machine is assorted, and % (m/m) does not have
(100 ℃, 3h) la la la is not more than 1 in copper strip test
Liquid phase corrosion (synthetic sea water) is rustless
Air releasing value (50 ℃),
2 1.66 1.63 are not more than 5
min
D943, acid number reaches after the oxidation
9,792 5,427 8211 greater than 3000
2.0mgKOH/g the time, hr
As shown in Table 4, three embodiment all can reach 3000 hours target of D943, and wherein the anti-oxidative stability of embodiment 4 is especially outstanding, can reach more than 9000 hours.
The composition and the consumption of the embodiment of the invention are as follows:
Three embodiment of table 3 long lifetime turbine oil
Form embodiment 1 embodiment 2 embodiment 3
Hydrogenation 150N%---49.8 49.6
A
The light 150N% 99.6 49.8 49.6 of Saudi Arabia
The B shield phenol type antioxidant
0.1 0.2 0.35
％
The C peroxide decomposer
0.2 0.15 0.1
％
D metal passivator % 0.05 0.01 0.04
The neutral rust-preventive agent % 0.05 0.04 0.11 of E
Comparative example is got the embodiment 2 in 99121597.4, but because the feature difference of the base oil that adopts, so do not possess comparability.
Three most preferred embodiments of table 4 long lifetime turbine oil
Form embodiment 4 embodiment 5 embodiment 6
Hydrogenation 150N%---49.8 49.8
A
The light 150N% 99.6 49.8 49.8 of Saudi Arabia
B 26-di-t-butyl
0.1 0.2 0.25
P-cresol %
The C tricresyl phosphate (2,4-
Di-tert-butyl-phenyl) ester 0.2 0.15 0.1
％
Deriving of D 124 Triazole
0.05 0.01 0.04
Thing %
E laurylene base fourth two
0.05 0.04 0.01
Acid esters %
Claims (4)
1. long lifetime steam turbine lubricating oil composition is characterized in that comprising following composition:
A. with more than the sulphur content 0.3wt%, saturated hydrocarbon content is lower than the base oil that 90wt% is a feature, 90wt%～99wt%;
B. as the 2,6 ditertiary butyl p cresol of shield phenol type antioxidant, 0.1wt%～0.25wt%;
C. as the phosphorous acid ester of peroxide decomposer, 0.1wt%～0.2wt%;
D. as the derivative of the 124 Triazole of metal passivator, 0.01wt%～0.05wt%;
E. as the dodecenylsuccinic acid ester of neutral rust-preventive agent, 0.01wt%～0.05wt%.
2. long lifetime steam turbine lubricating oil composition according to claim 1 is characterized in that the base oil in the described lubricating oil composition is the light 150N of Saudi Arabia.
3. long lifetime steam turbine lubricating oil composition according to claim 1 is characterized in that base oil in the described lubricating oil composition is the mixture of the hydrogenation 150N of the light 150N of Saudi Arabia of 50wt% and 50wt%.
4. long lifetime steam turbine lubricating oil composition according to claim 1 is characterized in that the phosphorous acid ester in the described lubricating oil composition is tricresyl phosphate (2, a 4-di-tert-butyl-phenyl) ester.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02141795.4A CN1223660C (en) | 2002-09-04 | 2002-09-04 | Compsn. of lubricating oil for steam turbine with long service life |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN02141795.4A CN1223660C (en) | 2002-09-04 | 2002-09-04 | Compsn. of lubricating oil for steam turbine with long service life |
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| Publication Number | Publication Date |
|---|---|
| CN1415710A CN1415710A (en) | 2003-05-07 |
| CN1223660C true CN1223660C (en) | 2005-10-19 |
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|---|---|---|---|
| CN02141795.4A Expired - Lifetime CN1223660C (en) | 2002-09-04 | 2002-09-04 | Compsn. of lubricating oil for steam turbine with long service life |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724487A (en) * | 2008-10-15 | 2010-06-09 | 中国石油天然气股份有限公司 | Anti-ammonia turbine oil composition |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102260578A (en) * | 2010-05-26 | 2011-11-30 | 比亚迪股份有限公司 | Electric engine oil composition, and preparation method thereof |
| CN102229846B (en) * | 2011-05-12 | 2013-09-04 | 泉州美孚美斯克化工有限公司 | Double anti-wear automobile lubricating oil |
| CN103571577B (en) * | 2012-07-31 | 2015-09-30 | 中国石油化工股份有限公司 | A kind of steam turbine lubricating oil composition |
| CN112646634A (en) * | 2020-12-23 | 2021-04-13 | 大唐东北电力试验研究院有限公司 | Use method of antioxidant for prolonging service life of steam turbine oil for power plant |
-
2002
- 2002-09-04 CN CN02141795.4A patent/CN1223660C/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101724487A (en) * | 2008-10-15 | 2010-06-09 | 中国石油天然气股份有限公司 | Anti-ammonia turbine oil composition |
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Effective date of registration: 20051111 Address after: 100029, No. six, Xin Xin Street East, Beijing, Chaoyang District Patentee after: CHINA PETROLEUM & CHEMICAL Corp. Address before: 525011 No. 2, west front road, Maoming, Guangdong Patentee before: Maoming Branch Co. SINOPEC |
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