CN118146857A - Anti-coking gas turbine lubricating oil - Google Patents
Anti-coking gas turbine lubricating oil Download PDFInfo
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- CN118146857A CN118146857A CN202211561736.7A CN202211561736A CN118146857A CN 118146857 A CN118146857 A CN 118146857A CN 202211561736 A CN202211561736 A CN 202211561736A CN 118146857 A CN118146857 A CN 118146857A
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- foaming agent
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- 239000010687 lubricating oil Substances 0.000 title claims abstract description 34
- 238000004939 coking Methods 0.000 title claims abstract description 21
- 239000003963 antioxidant agent Substances 0.000 claims abstract description 30
- 230000003078 antioxidant effect Effects 0.000 claims abstract description 30
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 21
- 150000008064 anhydrides Chemical class 0.000 claims abstract description 20
- 229920013639 polyalphaolefin Polymers 0.000 claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 11
- 239000006078 metal deactivator Substances 0.000 claims abstract description 8
- 239000002199 base oil Substances 0.000 claims abstract description 6
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 claims description 16
- -1 3, 5-di-t-butyl-4-hydroxyphenyl Chemical group 0.000 claims description 14
- XQVWYOYUZDUNRW-UHFFFAOYSA-N N-Phenyl-1-naphthylamine Chemical compound C=1C=CC2=CC=CC=C2C=1NC1=CC=CC=C1 XQVWYOYUZDUNRW-UHFFFAOYSA-N 0.000 claims description 10
- JKIJEFPNVSHHEI-UHFFFAOYSA-N Phenol, 2,4-bis(1,1-dimethylethyl)-, phosphite (3:1) Chemical compound CC(C)(C)C1=CC(C(C)(C)C)=CC=C1OP(OC=1C(=CC(=CC=1)C(C)(C)C)C(C)(C)C)OC1=CC=C(C(C)(C)C)C=C1C(C)(C)C JKIJEFPNVSHHEI-UHFFFAOYSA-N 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims description 8
- 239000001294 propane Substances 0.000 claims description 8
- 229910019142 PO4 Inorganic materials 0.000 claims description 7
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 7
- 239000010452 phosphate Substances 0.000 claims description 7
- CMGDVUCDZOBDNL-UHFFFAOYSA-N 4-methyl-2h-benzotriazole Chemical compound CC1=CC=CC2=NNN=C12 CMGDVUCDZOBDNL-UHFFFAOYSA-N 0.000 claims description 6
- NLZUEZXRPGMBCV-UHFFFAOYSA-N Butylhydroxytoluene Chemical compound CC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 NLZUEZXRPGMBCV-UHFFFAOYSA-N 0.000 claims description 5
- DMBHHRLKUKUOEG-UHFFFAOYSA-N diphenylamine Chemical compound C=1C=CC=CC=1NC1=CC=CC=C1 DMBHHRLKUKUOEG-UHFFFAOYSA-N 0.000 claims description 5
- 229920000058 polyacrylate Polymers 0.000 claims description 5
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 claims description 4
- 150000001412 amines Chemical class 0.000 claims description 4
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 4
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 3
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 claims description 3
- 229920000642 polymer Polymers 0.000 claims description 3
- QVXGKJYMVLJYCL-UHFFFAOYSA-N 2,3-di(nonyl)-N-phenylaniline Chemical compound C(CCCCCCCC)C=1C(=C(C=CC1)NC1=CC=CC=C1)CCCCCCCCC QVXGKJYMVLJYCL-UHFFFAOYSA-N 0.000 claims description 2
- UUNBFTCKFYBASS-UHFFFAOYSA-N C(CCCCCCC)C=1C(=C(C=CC1)NC1=CC=CC=C1)CCCCCCCC Chemical compound C(CCCCCCC)C=1C(=C(C=CC1)NC1=CC=CC=C1)CCCCCCCC UUNBFTCKFYBASS-UHFFFAOYSA-N 0.000 claims description 2
- HAQCMCPXROIUEN-UHFFFAOYSA-N N-butyl-2-nonyl-N-phenylaniline Chemical compound C(CCCCCCCC)C1=C(C=CC=C1)N(C1=CC=CC=C1)CCCC HAQCMCPXROIUEN-UHFFFAOYSA-N 0.000 claims description 2
- OSPSWZSRKYCQPF-UHFFFAOYSA-N dibutoxy(oxo)phosphanium Chemical compound CCCCO[P+](=O)OCCCC OSPSWZSRKYCQPF-UHFFFAOYSA-N 0.000 claims description 2
- 229920000193 polymethacrylate Polymers 0.000 claims description 2
- 150000003558 thiocarbamic acid derivatives Chemical class 0.000 claims description 2
- 239000010705 motor oil Substances 0.000 claims 9
- XYLMUPLGERFSHI-UHFFFAOYSA-N alpha-Methylstyrene Chemical compound CC(=C)C1=CC=CC=C1 XYLMUPLGERFSHI-UHFFFAOYSA-N 0.000 claims 1
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 abstract description 7
- 230000003647 oxidation Effects 0.000 abstract description 7
- 238000007254 oxidation reaction Methods 0.000 abstract description 7
- 150000001875 compounds Chemical class 0.000 abstract description 6
- 230000002195 synergetic effect Effects 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 30
- 239000000203 mixture Substances 0.000 description 25
- 239000003921 oil Substances 0.000 description 14
- 230000000052 comparative effect Effects 0.000 description 9
- IAYPIBMASNFSPL-UHFFFAOYSA-N Ethylene oxide Chemical compound C1CO1 IAYPIBMASNFSPL-UHFFFAOYSA-N 0.000 description 6
- 150000008065 acid anhydrides Chemical class 0.000 description 5
- 239000011521 glass Substances 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 4
- 150000003014 phosphoric acid esters Chemical class 0.000 description 4
- 239000010802 sludge Substances 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 239000013556 antirust agent Substances 0.000 description 3
- 235000010354 butylated hydroxytoluene Nutrition 0.000 description 3
- 239000003599 detergent Substances 0.000 description 3
- 150000002148 esters Chemical class 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- GOOHAUXETOMSMM-UHFFFAOYSA-N Propylene oxide Chemical compound CC1CO1 GOOHAUXETOMSMM-UHFFFAOYSA-N 0.000 description 2
- 239000000654 additive Substances 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000006260 foam Substances 0.000 description 2
- 239000002737 fuel gas Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- RUFPHBVGCFYCNW-UHFFFAOYSA-N 1-naphthylamine Chemical compound C1=CC=C2C(N)=CC=CC2=C1 RUFPHBVGCFYCNW-UHFFFAOYSA-N 0.000 description 1
- QDCPNGVVOWVKJG-VAWYXSNFSA-N 2-[(e)-dodec-1-enyl]butanedioic acid Chemical compound CCCCCCCCCC\C=C\C(C(O)=O)CC(O)=O QDCPNGVVOWVKJG-VAWYXSNFSA-N 0.000 description 1
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003197 catalytic effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000010710 diesel engine oil Substances 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- RMKNTZWZQFIOOB-UHFFFAOYSA-N n-butyl-2-octyl-n-phenylaniline Chemical compound CCCCCCCCC1=CC=CC=C1N(CCCC)C1=CC=CC=C1 RMKNTZWZQFIOOB-UHFFFAOYSA-N 0.000 description 1
- 125000004433 nitrogen atom Chemical group N* 0.000 description 1
- 150000007524 organic acids Chemical class 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Abstract
The invention discloses an anti-coking lubricating oil for a gas turbine. The gas turbine lubricating oil comprises the following components in percentage by mass: 1 to 5 percent of antioxidant, 0.5 to 5 percent of anhydride derivative, 0.01 to 0.1 percent of metal deactivator, 0.01 to 0.03 percent of demulsifier, 0.01 to 0.03 percent of anti-foaming agent, 0.01 to 0.05 percent of extreme pressure antiwear agent and the balance of base oil polyalphaolefin. The invention adopts an anhydride derivative compound system, and has excellent coking resistance, oxidation resistance and rust resistance. Each component has good compatibility and synergistic effect, stable and excellent performance, and meets the requirement of the gas turbine on the severe working condition of future ultrahigh pressure.
Description
Technical Field
The invention relates to the field of lubricating oil, in particular to anti-coking gas turbine lubricating oil.
Background
The gas turbine is an internal combustion power machine which uses continuously flowing gas as working medium to drive the impeller to rotate at high speed and convert the energy of fuel into useful work, and is a rotary impeller type heat engine. With the continuous progress of high-temperature materials and the continuous improvement of cooling effect of the turbine by adopting cooling blades, the initial temperature of the fuel gas is gradually increased, so that the efficiency of the fuel gas turbine is continuously improved, and the single-machine power is also continuously increased. Because of the extremely high technical content, the conventional steam turbine lubricating oil is difficult to work for a long time under severe working conditions, and higher requirements are put forward for guaranteeing the safety of equipment on the gas turbine lubricating oil so as to guarantee the normal operation of the equipment.
Patent application CN102618367A discloses a lubricating oil composition of a biogas power generation gas turbine, which adopts a high-base number detergent and PAO base oil, and the oil product meets the working condition requirement. However, the metallic elements contained in the metallic detergent tend to cause additional carbon deposition problems during operation of the gas turbine and affect the demulsification of the gas turbine lubricating oil.
Patent application CN112028764a discloses a preparation method and application of dodecenyl succinic acid amine salt, dodecenyl succinic acid and fatty acid are used for synthesizing dodecenyl succinic acid amine salt, which is used as water-based antirust agent, but has the problem of poor oil solubility, and can not be used in lubricating oil.
Patent application CN105733762A discloses a lubricating oil composition for a low-oil-sludge steam turbine, which can well meet the lubricating requirements of the steam turbine and the gas turbine with low-oil-sludge requirements. However, in the high-temperature operating environment, the formation of paint films and carbon deposition cannot be controlled.
Patent application CN104560242a discloses a mannich base, which is synthesized by using alkylphenol, formaldehyde and fatty amine to react to improve the clean dispersibility of diesel engine oil, but the base number of the synthesized compound is lower, and a metal detergent is required to be additionally added as a main source of the base number.
Disclosure of Invention
The invention aims to provide an anti-coking gas turbine lubricating oil which adopts an anhydride derivative compound system and has excellent anti-coking property, dispersibility, oxidation resistance and rust resistance. The additive has good compatibility and synergistic effect by screening metal deactivator, anti-foaming agent, demulsifier, antioxidant and the like, has stable and excellent performance and meets the severe working condition requirements of high temperature and high rotating speed of the gas turbine.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
the invention provides an anti-coking gas turbine lubricating oil which comprises the following components in percentage by mass: 1 to 5 percent of antioxidant, 0.5 to 5 percent of anhydride derivative, 0.01 to 0.1 percent of metal deactivator, 0.01 to 0.03 percent of demulsifier, 0.01 to 0.03 percent of anti-foaming agent, 0.01 to 0.05 percent of extreme pressure antiwear agent and the balance of base oil polyalphaolefin;
the structure of the anhydride derivative is as follows:
wherein x is an integer from 1 to 5 and y is an integer from 12 to 20. Further, x is more preferably an integer of 1 to 3, and y is more preferably an integer of 12 to 16.
The amide polar group of the anhydride derivative is adsorbed on metal to form a protective film, so that the anti-rust agent has excellent anti-rust performance; the basic nitrogen atoms contained in the low molecular compound can neutralize acidic products, insoluble substances are adsorbed through nonpolar groups, and the polar groups are dispersed in the oil, so that the low molecular compound has excellent cleaning dispersibility; the-OH in the structure provides a certain antioxidant effect for the system through a free radical mechanism, and can provide conditions for the regeneration of the amine antioxidant, so that the antioxidant property of the system is enhanced. The addition of the anhydride derivative can greatly reduce the dosage of the antioxidant and the antirust agent in a lubricating system. The anhydride derivative has the advantage of excellent solubility, and can be compatible with other components.
The gas turbine lubricating oil according to the present invention, preferably, the antioxidant is at least one selected from the group consisting of thiocarbamates, tris (2, 4-di-t-butylphenyl) phosphite, pentaerythritol tetrakis [ beta- (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], 2, 6-di-t-butyl-p-cresol, octylated phenyl-alpha-naphthylamine, dioctyl diphenylamine, dinonyl diphenylamine, octyl butyl diphenylamine, nonyl butyl diphenylamine, styryl octyl diphenylamine and alpha-methyl styryl diphenylamine.
Aiming at the characteristics of relatively high working temperature and easy coking of a lubricating system of a gas turbine, the antioxidant comprises a main antioxidant and an auxiliary antioxidant. The main antioxidant is preferably a macromolecular phenol antioxidant or a naphthylamine antioxidant, and is specifically selected from at least one of octylated phenyl-alpha-naphthylamine, pentaerythritol tetrakis [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and n-stearyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate. After the main antioxidants are compounded with the anhydride derivatives, the coking resistance of the oil product can be improved. The auxiliary antioxidant is tris (2, 4-di-tert-butylphenyl) phosphite. The antioxidant capacity can be further enhanced by adding the auxiliary antioxidant tri (2, 4-di-tert-butylphenyl) phosphite ester, and the antioxidant performance, coking resistance, dispersibility and rust resistance of the acid anhydride derivative can be remarkably improved after the acid anhydride derivative is compounded. More preferably, the mass ratio of the primary antioxidant to the auxiliary antioxidant is 20-40:1.
The gas turbine lubricating oil according to the present invention, preferably, the metal deactivator is selected from at least one of alkylthiadiazoles, methylbenzotriazoles, and N, N' -bis-salicylidenediamines. The metal passivating agent has good oil solubility, can prevent sulfur, organic acid and the like from corroding the metal surface, and can be complexed into inert substances by reacting with metal ions so as to lose catalytic oxidation.
The demulsifier according to the present invention is preferably selected from the group consisting of ethylene oxide/propylene oxide block copolyethers (LZ 5957 or DL32, LZ5957 is available from Libo specialty Chemicals (Shanghai) Inc., DL32 is available from Dan Yang Yu-petrochemical Co., or Hongze Peng oil additive Co., ltd.) or tetramer oxypropylene derivatives of amines (T1001 demulsifier, new Yongshi oil additive Co., ltd.). The demulsifier has excellent demulsification performance and foam resistance.
According to the gas turbine lubricating oil of the present invention, preferably, the anti-foaming agent is at least one selected from the group consisting of a composite anti-foaming agent, a polymethacrylate and a polyacrylate. The anti-foaming agent is convenient to use, has good compatibility with various additives, simultaneously has the functions of stability, oil solubility, foam resistance and the like, and has small influence on air release.
More preferably, the complex antifoam agent includes complex antifoam agent No.1 and complex antifoam agent No. 2 (available from wetting chemical company, inc. In ma).
According to the gas turbine lubricating oil of the present invention, preferably, the extreme pressure antiwear agent is selected from at least one of di-n-butyl phosphite, triaryl phosphate, and trialkyl phosphate.
In a preferred scheme, the gas turbine lubricating oil comprises the following components in percentage by mass: 1.0 to 2.5 percent of antioxidant, 0.5 to 1.0 percent of anhydride derivative, 0.03 to 0.05 percent of metal deactivator, 0.01 to 0.02 percent of demulsifier, 0.01 to 0.02 percent of anti-foaming agent, 0.01 to 0.02 percent of extreme pressure antiwear agent and the balance of base oil polyalphaolefin.
The invention adopts an anhydride derivative compound system, and has excellent coking resistance, oxidation resistance and rust resistance. Each component has good compatibility and synergistic effect, stable and excellent performance, and meets the requirement of the gas turbine on the severe working condition of future ultrahigh pressure.
Drawings
FIG. 1 is a graph of heated glass tubes of the gas turbine engine lubricating oils of examples 1-4 and comparative examples 1-3 after testing according to the SH/T0645-1997 test method.
Detailed Description
In order to more clearly illustrate the present invention, the present invention will be further described with reference to preferred embodiments. It is to be understood by persons skilled in the art that the following detailed description is illustrative and not restrictive, and that this invention is not limited to the details given herein.
The gas turbine engine lubricating oil composition compositions of examples 1-4 and comparative examples 1-3 are shown in tables 1-7 below. The results of the performance test of the gas turbine lubricating oils of each of the examples and comparative examples are shown in Table 8.
TABLE 1 composition of anti-coking gas turbine lubricating oils in example 1
| Composition of the composition | Content (mass percent%) |
| Anhydride derivative (x=1, y=12) | 0.5 |
| Tris (2, 4-di-tert-butylphenyl) phosphite | 0.05 |
| Octylated phenyl-alpha-naphthylamines | 0.5 |
| Tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester | 0.5 |
| Alkylthiadiazoles | 0.03 |
| Ethylene oxide/propane block copolyether LZ 5957/DL 32 | 0.01 |
| Triaryl phosphate esters | 0.02 |
| Polyacrylate esters | 0.01 |
| Polyalphaolefins | 98.38 |
TABLE 2 composition of anti-coking gas turbine lubricating oils in example 2
| Composition of the composition | Content (mass percent%) |
| Anhydride derivative (x=2, y=12) | 1.0 |
| Tris (2, 4-di-tert-butylphenyl) phosphite | 0.03 |
| Beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid n-stearyl alcohol ester | 1.0 |
| Phenyl-alpha-naphthylamines | 0.2 |
| Ethylene oxide/propane block copolyether LZ 5957/DL 32 | 0.02 |
| Methylbenzotriazole compounds | 0.05 |
| Trialkyl phosphate | 0.02 |
| No. 1 composite anti-foaming agent | 0.01 |
| Polyalphaolefins | 98.67 |
TABLE 3 composition of anti-coking gas turbine lubricating oils in example 3
| Composition of the composition | Content (mass percent%) |
| Anhydride derivative (x=2, y=14) | 0.7 |
| Tris [2, 4-di-t-butylphenyl ] phosphite | 0.18 |
| 2, 6-Di-tert-butyl-p-cresol | 5.0 |
| Methylbenzotriazole compounds | 0.04 |
| Ethylene oxide/propane block copolyether LZ 5967/DL 32 | 0.02 |
| Triaryl phosphate esters | 0.02 |
| No. 2 composite anti-foaming agent | 0.02 |
| Polyalphaolefins | 94.02 |
TABLE 4 composition of anti-coking gas turbine lubricating oils in example 4
| Composition of the composition | Content (mass percent%) |
| Anhydride derivative (x=2, y=14) | 1.0 |
| Tris [2, 4-di-tert-butylphenyl ] phosphite | 0.08 |
| Octylated phenyl-alpha-naphthylamines | 2.0 |
| N, N' -bis-salicylidene propylene diamine | 0.04 |
| Ethylene oxide/propane block copolyether LZ 5967/DL 32 | 0.01 |
| Trialkyl phosphate | 0.01 |
| Polyacrylate esters | 0.01 |
| Polyalphaolefins | 96.85 |
Table 5 composition of anti-coking gas turbine lubricating oils of comparative example 1
| Composition of the composition | Content (mass percent%) |
| Alpha-methyl styryl diphenylamine | 0.6 |
| Octylated phenyl-alpha-naphthylamines | 0.4 |
| 2, 6-Di-tert-butyl-p-cresol | 0.3 |
| Methylbenzotriazole compounds | 0.01 |
| Ethylene oxide/propane block copolyether LZ 5967/DL 32 | 0.03 |
| Triaryl phosphate esters | 0.02 |
| No. 1 composite anti-foaming agent | 0.01 |
| Polyalphaolefins | 98.63 |
Table 6 composition of anti-coking gas turbine lubricating oils of comparative example 2
| Composition of the composition | Content (mass percent%) |
| Alpha-methyl styryl diphenylamine | 0.5 |
| Octylated phenyl-alpha-naphthylamines | 0.5 |
| 2, 6-Di-tert-butyl-p-cresol | 0.7 |
| Methylbenzotriazole compounds | 0.05 |
| Polyethylene oxide/propane block polymer LZ5967\DL32 | 0.03 |
| Triaryl phosphate esters | 0.03 |
| No. 1 composite anti-foaming agent | 0.02 |
| Polyalphaolefins | 98.17 |
Table 7 composition of anti-coking gas turbine lubricating oils of comparative example 3
| Composition of the composition | Content (mass percent%) |
| Styryl octyl diphenylamine | 1.0 |
| Tris [2, 4-di-tert-butylphenyl ] phosphite | 0.5 |
| Octylated phenyl-alpha-naphthylamines | 0.7 |
| N, N' -bis-salicylidene propylene diamine | 0.04 |
| Polyethylene oxide/propane block polymer LZ5967\DL32 | 0.02 |
| Trialkyl phosphate | 0.03 |
| Polyacrylate esters | 0.02 |
| Polyalphaolefins | 98.69 |
Table 8 results of Performance testing of gas turbine lubricating oils in examples 1-5 and comparative examples 1-3
As can be seen from the table, after the acid anhydride derivative is added, the oxidation resistance of the oil product is improved, the amount of the oil sludge generated in the oxidation stability test is obviously reduced, and the rust resistance is excellent, so that after the acid anhydride derivative is added, the oil product has good oxidation resistance and lower sludge generation trend, and has good rust resistance.
The oils of examples 1-4 and comparative examples 1-3 were tested according to the SH/T0645-1997 test method. The test sample was mixed with oxygen at a temperature of 300 c and circulated back through the glass tube at an elevated temperature. After 2 hours, the deposit generated in the heated glass tube is shown in FIG. 1. The oil product added with the anhydride derivative has transparent glass tube wall and no generation of coked materials; whereas in the comparative example, in which no acid anhydride derivative was added, a large amount of black deposit appeared on the glass tube wall. The anhydride derivative can greatly improve the coking resistance of the oil product.
It should be understood that the foregoing examples of the present invention are provided merely for clearly illustrating the present invention and are not intended to limit the embodiments of the present invention, and that various other changes and modifications may be made therein by one skilled in the art without departing from the spirit and scope of the present invention as defined by the appended claims.
Claims (12)
1. An anti-coking gas turbine lubricating oil, which is characterized by comprising the following components in percentage by mass: 1 to 5 percent of antioxidant, 0.5 to 5 percent of anhydride derivative, 0.01 to 0.1 percent of metal deactivator, 0.01 to 0.03 percent of demulsifier, 0.01 to 0.03 percent of anti-foaming agent, 0.01 to 0.05 percent of extreme pressure antiwear agent and the balance of base oil polyalphaolefin;
the structure of the anhydride derivative is as follows:
Wherein x is an integer from 1 to 5 and y is an integer from 12 to 20.
2. The gas turbine engine lubricant according to claim 1, wherein x is selected from integers from 1 to 3 and y is selected from integers from 12 to 16.
3. The gas turbine engine lubricant according to claim 1, wherein the antioxidant is selected from at least one of thiocarbamates, tris (2, 4-di-t-butylphenyl) phosphite, pentaerythritol tetrakis [ β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], 2, 6-di-t-butyl-p-cresol, octylated phenyl- α -naphthylamine, dioctyldiphenylamine, dinonyldiphenylamine, octylbutyldiphenylamine, nonylbutyldiphenylamine, styryloctyldiphenylamine, and α -methylstyrene-based diphenylamine.
4. The gas turbine engine lubricating oil of claim 1, wherein the antioxidants include a primary antioxidant and a secondary antioxidant; the main antioxidant is at least one selected from octylated phenyl-alpha-naphthylamine, pentaerythritol tetra [ beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate ] and n-stearyl beta- (3, 5-di-tert-butyl-4-hydroxyphenyl) propionate;
the auxiliary antioxidant is tris (2, 4-di-tert-butylphenyl) phosphite.
5. The gas turbine engine lubricating oil of claim 4, wherein the mass ratio of the primary antioxidant to the secondary antioxidant is 20 to 40:1.
6. The gas turbine engine lubricant according to claim 1, wherein the metal deactivator is selected from at least one of an alkyl thiadiazole, a methyl benzotriazole, and N, N' -bis-salicylidenediamine.
7. The gas turbine engine oil of claim 1, wherein the demulsifier is a polyethylene oxide/propane block polymer or a tetrapolyoxypropylene derivative of an amine.
8. The gas turbine engine oil of claim 1, wherein the demulsifier is an LZ5957, DL32, or T1001 demulsifier.
9. The gas turbine engine lubricant of claim 1, wherein the anti-foaming agent is selected from at least one of a complex anti-foaming agent, a polymethacrylate, and a polyacrylate.
10. The gas turbine engine lubricant of claim 9, wherein the composite anti-foaming agent comprises a No. 1 composite anti-foaming agent, a No. 2 composite anti-foaming agent.
11. The gas turbine engine lubricating oil of claim 10, wherein the extreme pressure antiwear agent is selected from at least one of di-n-butyl phosphite, triaryl phosphate, and trialkyl phosphate.
12. The gas turbine engine lubricant according to any one of claims 1 to 11, wherein the gas turbine engine lubricant comprises the following components in mass percent: 1.0 to 2.5 percent of antioxidant, 0.5 to 1.0 percent of anhydride derivative, 0.03 to 0.05 percent of metal deactivator, 0.01 to 0.02 percent of demulsifier, 0.01 to 0.02 percent of anti-foaming agent, 0.01 to 0.02 percent of extreme pressure antiwear agent and the balance of base oil polyalphaolefin.
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| Publication Number | Publication Date |
|---|---|
| CN118146857A true CN118146857A (en) | 2024-06-07 |
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