CN102093926B - Energy-saving environment-friendly methanol gasoline engine lubricating oil and preparation method thereof - Google Patents
Energy-saving environment-friendly methanol gasoline engine lubricating oil and preparation method thereof Download PDFInfo
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- CN102093926B CN102093926B CN 200910255621 CN200910255621A CN102093926B CN 102093926 B CN102093926 B CN 102093926B CN 200910255621 CN200910255621 CN 200910255621 CN 200910255621 A CN200910255621 A CN 200910255621A CN 102093926 B CN102093926 B CN 102093926B
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Abstract
The invention discloses energy-saving environment-friendly methanol gasoline engine lubricating oil and a preparation method thereof. The lubricating oil can be fully used for methanol gasoline and is prepared by taking base oil, detergent dispersant, antioxidant anticorrosive agent, viscosity improver, extreme pressure antiwear additive, pour-point depressant, antifoaming additive and anti-emulsifying agent as raw materials. The engine lubricating oil provided by the invention can greatly reduce friction of a kinematic pair of an engine and reduce wear, prevent sediment formation in the engine, improve lubricating property of oil product, reduce frictional wear, delay oxidation of engine oil, and prolong the service life of engine oil, and is very suitable for the engines with methanol gasoline as fuel.
Description
Technical field
A kind of energy-saving environment-friendly methanol petrol engine lubricating oil and preparation method thereof.The invention belongs to the petroleum products additive agent field.
Background technology
Along with the develop rapidly of China's economy, the demand of the energy is day by day increased, especially along with the fast development of automotive industry, we are increasing sharply by automobile pollution, and the demand of the fuel for motor vehicle that causes increases too fast, the exploitation and the consumption that have strengthened petroleum resources.Limited prospective oil and produced quantity are difficult to satisfy the growing demand of society, and constantly the soaring and in the world the contention of petroleum resources growed in intensity of world petroleum price, make countries in the world all strengthen the research and development of substitute energy source for petroleum, break away from the dependence to the foreign oil import, progressively developed some fuel products additional or replacing gasoline.
A large amount of experimental studies prove: be no matter that methyl alcohol or ethanol can be applied to gasoline and adds the substitute field.Alcohols is except oil, Sweet natural gas, the fuel that oil engine can substitute.Use that Aalcohols fuel is topmost is also advantageous in that they can both reach the discharging more much lower than hydrocarbon fuel, be of great benefit to reducing topsoil; With traditional engine technology, inheritance is arranged, when particularly using gasoline-alcohol mixed fuel, engine structure changes little; Their octane value is high in addition, when making spark ignition engine fuel, can be used for the higher engine of compression ratio, improves the thermo-efficiency of engine, and it is the most promising fuel substitute of oil engine.Promote the use of in this sense ethanol petrol or methanol gasoline combustion motor and all belong in the use feasible.
China's extensive spread-foodstuff ethanol once for the first period, but be difficult in the long term as one, substituting of share arranged.Because China's national situation is to support the population in the world 22% with 7% arable land in the world, this is a major premise.By existing state of the art, 3.5 ton-grain foods are cooked 1 ton of ethanol, consider the calorific value of ethanol, 5 ton-grain foods and 1 ton of gasoline equivalent.The coal that will consume in addition 0.5～0.8 ton is used for fermentation and dehydration.So, 1,000 ten thousand tons of gasoline need account for 1/10 of China's total output of grain with 5,000 ten thousand tons, grain, so promote ethanol become impossible.Certainly, can consider with other crop producing and ethanols in next life such as cassava and sweet sorghumes, or make (present technology does not also have commercialization) with stalk and other Mierocrystalline celluloses, but the latter exists large scale collection and transportation problem.In July, 2007, consider from environmental protection and national energy present situation, State Council promptly halts grain-production alcohol fuel project.
And other sources of ethanol comprise ethylene hydration method, are subject to the source restriction of ethene; Stalk cellulose ethanol processed also only rests on theory stage.And the methyl alcohol source is very abundant, mainly contains following source: coal methyl alcohol processed; Methanol from natural gas; The synthesis ammonia plant combined production of methanol, each all is suitable for scale operation.
Methyl alcohol has following Some features: the quality low heat value of methyl alcohol only has 45% of gasoline, and therefore, under equal thermo-efficiency, the virtual mass specific fuel oil consumption of Aalcohols fuel is high.Calculate by mass, contain 50% oxygen in methyl alcohol, make combustionvelocity fast, and more complete; The required air capacity of methyl alcohol perfect combustion is lacked than gasoline, and the also corresponding minimizing of heat that after burning, tail gas is taken away is improved the engine overall thermal efficiency; Methyl alcohol theoretical mixture gas quality low heat value is that gasoline theoretical mixture gas quality is low-calorie 94%, so the engine for combusting methanol fuel can obtain and former machine suitable dynamic property roughly.The latent heat of vaporization of methyl alcohol is 3.6 times of gasoline, and the high latent heat of vaporization and low vapour pressure and lower boiling point will cause gas mixture to form difficulty and engine start difficulty, but can reduce inlet air temperature, improve charging efficiency; Simultaneously, because the latent heat of vaporization of methyl alcohol is large, can improve the internal cooling after engine combustion, improve the dynamic property of engine, reduce exhaust temperature.Methyl alcohol has higher octane value, has higher knock resistance, and is very favourable to the thermo-efficiency that recently improves engine by the raising engine compresses, so methyl alcohol is good petrol motor fuel substitute, is also the good additive that improves gasoline octane rating.Regular gasoline and 15%～20% methanol mixed, octane value can reach the level of premium.The boundary of catching fire of methyl alcohol is wider than gasoline, and engine is worked under rarer gas mixture, and this will make the condition range of engine wider, and is highly beneficial to exhaust gas purification and reduction oil consumption.The burning-point of methyl alcohol is higher than gasoline, is not easy to the presence of fire accident, than using gasoline safety.Methyl alcohol has swelling action to some non-metallic material (as plastics, rubber etc.), and (as Sn, Pb, Al etc.) have slight corrosive nature to some metallic substance, in use should take appropriate measures.Aalcohols fuel contains hydroxyl, can dissolve each other with water, and the hydrocarbon fuel hydrophobic nature is strong, thereby the intermiscibility of methyl alcohol and gasoline is poor, when methyl alcohol mixes by a certain percentage with gasoline, has demixing phenomenon in certain temperature range.Be liquid under the methanol gasoline normal temperature and pressure, processing ease, the storage band is convenient, but has certain toxicity.
Methyl alcohol mixes according to a certain percentage with gasoline, and after adding certain additive composition propellant combination, low ratio methanol gasoline, as M3, M5, can equally with gasoline use, engine need not done any change, once is used as in a large number gasoline sales on Europe and other places, but generally will add solubility promoter (TBA) etc. in case the fuel layering; Middle ratio methanol gasoline, as M15, M25, engine only need adjust, and technical problem is simpler, once demonstrates in some international fleets of Europe, must add solubility promoter; Gasoline of high proportion methanol as M85, M90, need to reequip engine, optimize, and its power, discharging and thermo-efficiency all are better than former petrol motor.
But for methanol gasoline engine, when burning methanol fuel, the external characteristic power of petrol motor descends to some extent, but less on the dynamic property impact of engine.The fuel injection duration of fuel is identical when full load, and because the calorific value of methyl alcohol is low, the total heating value of carbinol gasoline fuel decreases when same fuel charge, and the circulation thermal discharge reduces, and causes engine power slightly to descend.But the flame propagation velocity of methyl alcohol is high, and the combustionvelocity in engine cylinder is improved.Because mass fraction of oxygen in methyl alcohol is 50%, mixture combustion is relatively more abundant, and efficiency of combustion improves, and the specific fuel oil consumption of methanol fuel is reduced, and economy improves.Because methanol gasifying latent heat is large, maximum combustion temperature reduces simultaneously, arranges accordingly temperature and descends to some extent, and the in-cylinder combustion temperature reduces, and can reduce the heat lost by radiation to water coolant of conducting heat and causing, and has also improved to a certain extent the effective thermal efficiency of petrol motor.Engine is when using methanol gasoline, because the vaporization heat of methyl alcohol is higher, during engine starting, gasification is bad, the more not methyl alcohol of volatilization just condenses upon on cylinder wall and enters in engine oil, make the engine oil film be washed and cause oxidation products formic acid that friction wear, methanol gasoline generate and corrosion that formaldehyde etc. causes the endless belt metallic surface in combustion processes.According to the literature, carry out gas chromatographic analysis by the composition of M100 being used oil, result shows: used and mainly contain water and methyl alcohol in oil samples, the content of formaldehyde, formic acid is atomic; The formaldehyde that methanol gasoline burning produces, formic acid part are volatilized, but also some and engine oil, additive reaction, cause additive to lose corrosion-resisting function and have accelerated the corrosive wear of piston and cylinder wall.
Therefore in sum, for the methanol vapor oil machine, common lubricating oil is no longer applicable, in energy dilemma serious all the more today, promotes for the methyl alcohol class A fuel A, and it is particularly important that the preparation of methanol gasoline engine lubricating oil seems.
Summary of the invention
The object of the present invention is to provide a kind of energy-saving environment-friendly methanol petrol engine lubricating oil, use methanol gasoline engine lubricating oil of the present invention, not only can greatly reduce the wearing and tearing of engine, and also have extraordinary preservative property, oxidation-resistance and low-temperature startup, and can reduce the discharging of obnoxious flavour in the vehicle exhaust, obvious economic benefit and social benefit have been arranged.Methanol gasoline engine lubricating oil of the present invention is mainly composed of the following components, and each composition weight umber is as follows:
The composition weight umber
50 ~ 60 parts of base oils;
2 ~ 5 parts of detergent dispersants;
2 ~ 5 parts of oxidation and corrosion inhibitors
3 ~ 5 parts of viscosity modifiers
5 ~ 10 parts of extreme pressure anti-wear additives
2 ~ 5 parts of pour point depressants
2 ~ 5 parts of kilfoams
3 ~ 5 parts of rust-preventive agent
2 ~ 3 parts of non-emulsifying agents
Described base oil selects lubricating oil general basic oil composed of the following components, and each composition weight umber is as follows::
The composition weight umber
Hydrogenated base oil 250N, 10 ~ 20 parts
Paraffinic base neutral oil 500SN, 15 ~ 20 parts
Residual 10 ~ 15 parts of the oily 150BS (being the two dragons of Korea S produces) that heat up in a steamer
Described detergent dispersant is diene succimide T152.
Described oxidation and corrosion inhibitor is dodecyl diphenylamines (IRGANOX L57 or IRGANOX L135).
Described viscosity modifier is composed of the following components, and each composition weight umber is as follows:
The composition weight umber
5 ~ 10 parts of poly-n-butyl vinyl ether
2 ~ 5 parts of hy drogenated styrene-diene copolymers (HSD or SDC)
Described extreme pressure anti-wear additives is dibenzyl disulfide.
Described pour point depressant is poly-methyl-prop diluted acid ester.
Described kilfoam is dimethyl silicone oil.
Described rust-preventive agent is barium mahogany sulfonate.
Described non-emulsifying agent is amine and ethylene oxide condensate (T1001).
The preparation method of additive of the present invention is as follows:
(1) with hydrogenated base oil 250N, paraffinic base neutral oil 500SN residually heats up in a steamer oily 150BS and adds in the miscible tank of raw material, miscible 15 minutes;
(2) add detergent dispersant in above-mentioned miscible material, oxidation and corrosion inhibitor stirred 15-20 minute at normal temperatures and pressures;
(3) add viscosity modifier to gather n-butyl vinyl ether in above-mentioned miscible material, hy drogenated styrene-diene copolymer (HSD, SDC) stirred 20 ~ 25 minutes at normal temperatures and pressures;
(4) add extreme pressure anti-wear additives dibenzyl disulfide, pour point depressant polymethacrylate, kilfoam dimethyl silicone oil, funcitonal rust-proof agent barium mahogany sulfonate, non-emulsifying agent amine and ethylene oxide condensate (T1001) to stir at normal temperatures and pressures in above-mentioned miscible material 30 ~ 35 minutes, compound imports in autoclave;
(5) in reactor, above-mentioned miscible material is added 40-60 normal atmosphere, be heated to 50 ~ 60 ℃, stir and reduce to normal pressure after 25-30 minute, be down to normal temperature, standing 24 hours, leach throw out, namely obtain lube product of the present invention.
Beneficial effect of the present invention is:
(1) can greatly reduce the degree of wear of methanol gasoline engine, work-ing life extended period.
(2) can reduce to a great extent fuel and consume, save the railroad fuel cost.
(3) to the pollutant emission of methanol gasoline engine such as CH content also has the minimizing effect.
Use the comparing result of methanol gasoline engine lubricating oil of the present invention and plain oil as follows:
Experiment material: automobile-used M35 methanol gasoline, methanol gasoline engine lubricating oil of the present invention, 15W/40SJ level petrol motor engine oil (reference lube).Plant and instrument sees Table
| Title | Specifications and models | Production unit | Unit is identified in metering |
| Engine | M-TCE | Korea S sky company | |
| Dynamometer machine | CW50 | Luoyang Nan Feng machine works | Shaanxi Province quantitative study institute |
| The oil consumption meter | FCM | Shanghai Institute of Internal Combustion Engine | Shaanxi Province quantitative study institute |
| The ventilating dry humidity meter | DHM2 | Tianjin Meteorological Instrument Factory | Shaanxi Province quantitative study institute |
| Moving groove mercury gage | DYM1 | Changchun meteorologic instrument factory | Shaanxi Province quantitative study institute |
| Exhaust-gas analyzer | AVL4000 | AVL company | Shaanxi Province quantitative study institute |
(1) oil consumption under standard power
| Rotation speed n/(r *min -1)/ Ne.Max/kW | Blank (not adding any lubricating oil) g/s | 15W/40SJ level petrol motor engine oil g/s | Methanol gasoline engine lubricating oil g/s of the present invention |
| 3000 turn/100kw | 101.8 | 93.6 | 78.4 |
This shows, do not affecting in the motor speed situation, methanol gasoline engine lubricating oil of the present invention can reduce to a great extent fuel and consume, and saves the railroad fuel cost.
(2) pollutant emission
This shows, to the pollutant emission of methanol gasoline engine such as CH content also has the minimizing effect.
(3) abrasion resistance: be as the criterion with GB/T3142 and evaluate the abrasion resistance of engine oil.Main mill spot value and the last non seizure load PB value of measuring oil product.
| Lubricating oil | 15W/40SJ level petrol motor engine oil | Methanol gasoline engine lubricating oil of the present invention |
| Wear scar diameter/mm | 2.1 | 0.8 |
This shows, the resistance to abrasion of methanol gasoline engine lubricating oil of the present invention is compared well.
Embodiment
Embodiment 1: methanol gasoline engine lubricating oil of the present invention is comprised of the raw material of following weight proportioning:
10 parts of hydrogenated base oil 250N, 5 parts of paraffinic base neutral oil 500SN, residual 8 parts of oily 150BS, 5 parts of the diene succimides of heating up in a steamer; 5 parts of dodecyl diphenylamines, 5 parts of poly-n-butyl vinyl ether, 5 parts of hy drogenated styrene-diene copolymers, 5 parts of dibenzyl disulfides, 3 parts of polymethacrylate, 2 parts of dimethyl silicone oils, 3 parts of barium mahogany sulfonates, amine and ethylene oxide condensate T10012 part.
Embodiment 2: methanol gasoline engine lubricating oil of the present invention is comprised of the raw material of following weight proportioning:
15 parts of hydrogenated base oil 250N, 5 parts of paraffinic base neutral oil 500SN, residual 5 parts of oily 150BS 8, the diene succimides that heat up in a steamer; 3 parts of 2 parts of dodecyl diphenylamines, 5 parts of poly-n-butyl vinyl ether, 5 parts of hy drogenated styrene-diene copolymers, 5 parts of dibenzyl disulfides, 3 parts of poly-methyl-prop diluted acid esters, 3 parts of dimethyl silicone oils, 4 parts of barium mahogany sulfonates, amine and ethylene oxide condensates (T1001).
Embodiment 3: methanol gasoline engine lubricating oil of the present invention is comprised of the raw material of following weight proportioning:
20 parts of hydrogenated base oil 250N, 5 parts of paraffinic base neutral oil 500SN, residual 2 parts of oily 150BS 8, the diene succimides that heat up in a steamer; 3 parts of 5 parts of dodecyl diphenylamines, 10 parts of poly-n-butyl vinyl ether, 3 parts of hy drogenated styrene-diene copolymers, 10 parts of dibenzyl disulfides, 3 parts of poly-methyl-prop diluted acid esters, 3 parts of dimethyl silicone oils, 5 parts of barium mahogany sulfonates, amine and ethylene oxide condensates (T1001).
Claims (2)
1. energy-saving environment-friendly methanol petrol engine lubricating oil is characterized in that composed of the following componentsly, and each composition weight umber is as follows:
Said base oil is composed of the following components, and each composition weight umber is as follows:
10～20 parts of hydrogenated base oil 250N
15～20 parts of paraffinic base neutral oil 500SN
Residual 10～15 parts of the oily 150BS that heat up in a steamer;
Said viscosity modifier is composed of the following components, and each composition weight umber is as follows:
5～10 parts of poly-n-butyl vinyl ether
2～5 parts of hy drogenated styrene-diene copolymer HSD or SDC;
Said detergent dispersant is diene succimide T152;
Said oxidation and corrosion inhibitor is dodecyl diphenylamines IRGANOX L57 or IRGANOX L135;
Said extreme pressure anti-wear additives is dibenzyl disulfide;
Said pour point depressant is polymethacrylate;
Said kilfoam is dimethyl silicone oil;
Said rust-preventive agent is barium mahogany sulfonate;
Said non-emulsifying agent is amine and ethylene oxide condensate T1001.
2. the preparation method of energy-saving environment-friendly methanol petrol engine lubricating oil as claimed in claim 1 is characterized in that:
(1) with hydrogenated base oil 250N, paraffinic base neutral oil 500SN residually heats up in a steamer oily 150BS and adds in the miscible tank of raw material, miscible 15 minutes;
(2) add detergent dispersant in above-mentioned miscible material, oxidation and corrosion inhibitor stirred 15-20 minute at normal temperatures and pressures;
(3) add viscosity modifier to gather n-butyl vinyl ether in above-mentioned miscible material, hy drogenated styrene-diene copolymer HSD or SDC stirred 20～25 minutes at normal temperatures and pressures;
(4) add extreme pressure anti-wear additives dibenzyl disulfide, pour point depressant polymethacrylate, kilfoam dimethyl silicone oil, funcitonal rust-proof agent barium mahogany sulfonate, non-emulsifying agent amine and ethylene oxide condensate T1001 in above-mentioned miscible material, stirred at normal temperatures and pressures 30～35 minutes, compound imports in autoclave;
(5) in reactor, above-mentioned miscible material is added 40-60 normal atmosphere, be heated to 50～60 ℃, stir and reduce to normal pressure after 25-30 minute, be down to normal temperature, standing 24 hours, leach throw out, namely get the methanol gasoline engine lube product.
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| CN103289795B (en) * | 2012-02-22 | 2015-06-10 | 中国石油化工股份有限公司 | Marine engine oil composition and application thereof |
| CN102746928A (en) * | 2012-06-11 | 2012-10-24 | 江苏双江石化制品有限公司 | Processing method of hydraulic transmission oil of vehicle automatic transmission |
| CN104845681B (en) * | 2015-05-25 | 2016-11-30 | 马西岐 | A kind of preparation method of the corrosion inhibitor of methanol gasoline |
| CN106281582A (en) * | 2015-05-26 | 2017-01-04 | 深圳中嘉能源有限公司 | A kind of repairing type lubricant |
| CN105219482B (en) * | 2015-08-11 | 2018-12-18 | 臧树良 | Green Lubricants compound additive for methanol fuel internal combustion engine and the lubricating oil and its production method using the compound additive |
| CN110699153B (en) * | 2018-07-09 | 2022-05-31 | 中国石油化工股份有限公司 | Industrial gearbox cleaning oil composition |
| CN111363604A (en) * | 2020-03-25 | 2020-07-03 | 天津大学 | Lubricating oil composition for suppressing knocking phenomenon and use thereof |
| CN115505443A (en) * | 2021-06-23 | 2022-12-23 | 中国石油化工股份有限公司 | Lubricating oil composition suitable for methanol engine, preparation method and application thereof |
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| CN1570048A (en) * | 2004-04-29 | 2005-01-26 | 张为光 | Energy-saving environment protective lubricating oil |
| CN101358155A (en) * | 2008-09-24 | 2009-02-04 | 长安大学 | Lubricating oil composition for methanol gasoline engine |
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| US5256322A (en) * | 1989-02-27 | 1993-10-26 | Atlantic Richfield Company | Lubricating oil for methanol fueled engines |
| CN1570048A (en) * | 2004-04-29 | 2005-01-26 | 张为光 | Energy-saving environment protective lubricating oil |
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Effective date of registration: 20151027 Address after: 201814 Shanghai City, Jiading District Anting Town, Tao Road No. 199 Patentee after: SHANGHAI DELIAN CHEMICAL CO., LTD. Address before: 250100 Shandong city of Ji'nan province high tech Zone (Licheng District) Xinluo Avenue No. 786 Room 201 Patentee before: Xinghuo Sci. & Tech. Research Inst., Jinan Dev. Zone |