CN111454763A - Fully-synthetic staged marine internal combustion engine lubricating oil and preparation method thereof - Google Patents
Fully-synthetic staged marine internal combustion engine lubricating oil and preparation method thereof Download PDFInfo
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- CN111454763A CN111454763A CN202010290884.4A CN202010290884A CN111454763A CN 111454763 A CN111454763 A CN 111454763A CN 202010290884 A CN202010290884 A CN 202010290884A CN 111454763 A CN111454763 A CN 111454763A
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M169/00—Lubricating compositions characterised by containing as components a mixture of at least two types of ingredient selected from base-materials, thickeners or additives, covered by the preceding groups, each of these compounds being essential
- C10M169/04—Mixtures of base-materials and additives
- C10M169/048—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution, non-macromolecular and macromolecular compounds
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2203/00—Organic non-macromolecular hydrocarbon compounds and hydrocarbon fractions as ingredients in lubricant compositions
- C10M2203/02—Well-defined aliphatic compounds
- C10M2203/024—Well-defined aliphatic compounds unsaturated
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/02—Hydroxy compounds
- C10M2207/023—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings
- C10M2207/026—Hydroxy compounds having hydroxy groups bound to carbon atoms of six-membered aromatic rings with tertiary alkyl groups
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2207/00—Organic non-macromolecular hydrocarbon compounds containing hydrogen, carbon and oxygen as ingredients in lubricant compositions
- C10M2207/10—Carboxylix acids; Neutral salts thereof
- C10M2207/12—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms
- C10M2207/121—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms
- C10M2207/123—Carboxylix acids; Neutral salts thereof having carboxyl groups bound to acyclic or cycloaliphatic carbon atoms having hydrocarbon chains of seven or less carbon atoms polycarboxylic
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/02—Amines, e.g. polyalkylene polyamines; Quaternary amines
- C10M2215/06—Amines, e.g. polyalkylene polyamines; Quaternary amines having amino groups bound to carbon atoms of six-membered aromatic rings
- C10M2215/064—Di- and triaryl amines
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2215/00—Organic non-macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2215/22—Heterocyclic nitrogen compounds
- C10M2215/223—Five-membered rings containing nitrogen and carbon only
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2217/00—Organic macromolecular compounds containing nitrogen as ingredients in lubricant compositions
- C10M2217/02—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2217/024—Macromolecular compounds obtained from nitrogen containing monomers by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to an amido or imido group
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/04—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions containing sulfur-to-oxygen bonds, i.e. sulfones, sulfoxides
- C10M2219/046—Overbasedsulfonic acid salts
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2219/00—Organic non-macromolecular compounds containing sulfur, selenium or tellurium as ingredients in lubricant compositions
- C10M2219/06—Thio-acids; Thiocyanates; Derivatives thereof
Abstract
The invention discloses a total synthesis staged marine internal combustion engine lubricating oil and a preparation method thereof, wherein weighed synthetic base oil and ester oil are put into a reaction kettle, and stirring and heating are started; adding pour point depressant and viscosity index improver and stirring; adjusting the stirring speed, adding a detergent, an ashless dispersant, a high-temperature antioxidant, a friction modifier and an extreme pressure antiwear agent, and continuously stirring; adjusting stirring speed, adding antioxidant antigum inhibitor and oil soluble antirust agent, stirring, pumping into storage tank, and standing. The invention can meet the requirements of medium-speed machines in different stages on the base number and the oil film strength by adopting a staged oil feeding mode, has excellent lubricating property and acid neutralizing capacity, extremely high thermal oxidation stability and thermal stability and extremely good corrosion resistance. The invention can also improve the kinematic viscosity of the lubricating oil of the internal combustion engine, effectively reduce the abrasion among the apparatuses, introduce the degradable material and have important significance for developing green and environment-friendly products.
Description
Technical Field
The invention relates to the technical field of lubricating oil, in particular to total-synthesis staged marine internal combustion engine lubricating oil and a preparation method thereof.
Background
The marine internal combustion engine oil is a fully synthetic marine internal combustion engine oil with characteristics of rolling lubrication, high pressure resistance and fuel film resistance, also called as marine medium-low speed cylindrical piston diesel engine oil (short for medium-speed engine), the rotating speed of the marine internal combustion engine oil is generally 300-1000 r/min, the cylinder diameter is 200-900 mm, and the single-cylinder output power is 100-1800 brake horsepower. The device has compact structure, high specific power per unit volume and weight and convenient operation, and is mainly used for small and medium-sized ship main engines or large-sized ship auxiliary engines. The cylinder, valve system and bearing bush of the medium speed engine share one kind of lubricating oil, and the lubricating environment is harsh, so the marine medium speed engine oil is required to have good acid neutralization capacity, high-temperature cleaning dispersibility, thermal oxidation stability, water separation property, wear resistance, corrosion resistance and other properties.
With the increasing competition of the transportation industry, the reduction of the transportation cost is a main problem facing the shipping industry, the combustion of high-viscosity heavy fuel oil for engines is an effective means for reducing the shipping cost, but the corrosion and abrasion of piston rings and cylinder liners of the engines can be caused by the greatly increased sulfur content in the heavy fuel oil. The combustion products of sulfur can accelerate the production of deposits by lubricating oil, so that the deposits in the piston ring area are accumulated to form clamping rings, and the oxidation of acid substances and oil products generated by the combustion of sulfur can cause the serious abrasion of the piston ring area and a cylinder sleeve and the increase of oil consumption, so that the service life of a diesel engine is shortened. The ship engine should reasonably select medium-speed engine oil with different base numbers according to the sulfur content of used fuel, the base number of the medium-speed engine oil is generally in the range of 12-50 mgKOH/g, and the current high-base-number medium-speed engine oil with classification characteristics is international or blank.
The fully synthetic staged anti-flaming and rolling lubricating marine internal combustion engine oil is mainly used in cylinders, valve systems and bearing bushes, so that the requirement on the internal combustion engine oil is very strict, and the marine internal combustion engine oil has the advantages of excellent acid neutralization capacity, high-temperature oxidation stability, high-temperature detergency and dispersibility, low carbon deposit tendency, good oil-water separation performance and the like. The heavy fuel oil engine has low rotating speed, long stroke, large clearance, high temperature and high oil film strength required for resisting fire, high temperature and high pressure. However, the kinematic viscosity of the traditional lubricating oil of models 4015, 4030 and the like is only 12.5-16.3 centistokes, and the oil products have the defects of insufficient anti-fuel oil film, easy oxidation to generate oil sludge, carbon deposition and the like after being burned by fuel oil and impacted by high temperature and high pressure in an engine, and meanwhile, the friction and the abrasion of the engine are aggravated, the oil consumption is increased, and the service life is shortened. Therefore, in order to meet the severe performance index requirements of heavy fuel oil engines, the quality of lubricating oil of the engines is reduced due to high-temperature and high-pressure impact of fuel oil combustion in reciprocating motion, the replacement time is long, the quality of an anti-fuel oil film needs to be improved during addition, if the performance index of the internal combustion engine oil cannot be improved, adverse consequences such as air leakage and air blowby, air pressure reduction, wear aggravation, gap enlargement, oil consumption increase and the like can be generated, meanwhile, excessive fuel oil is not matched with internal air pressure, the improvement of the power of the engines can also be influenced, and more harmful particles such as nitrogen oxides are generated.
Therefore, the problem to be solved by the technical personnel in the field is how to provide a marine internal combustion engine lubricating oil with good acid neutralization capacity, high-temperature cleaning and dispersing property, thermal oxidation stability, water separating property and wear and corrosion resistance.
Disclosure of Invention
In view of the above, the invention provides a fully synthetic staged marine internal combustion engine lubricating oil and a preparation method thereof, and the prepared lubricating oil not only has the characteristic of high base number, but also can be matched with different base number requirements according to different refueling modes by selecting proper base oil and additives, so that the working efficiency of a marine engine is improved.
In order to achieve the purpose, the invention adopts the following technical scheme:
a fully-synthetic staged marine internal combustion engine lubricating oil comprises the following raw materials in parts by weight:
preferably, the synthetic base oil is: PAO10, 180I and ester oils, having a wide viscosity range, good low and high temperature stability and excellent chemical safety, are offered by the english trade (shanghai) ltd.
Preferably, the ester oil is a diester (product name DA32, supplied by liening yingkou starfire chemical company, ltd.) or a polyol ester (G2820, supplied by shanghai lubricating oil company, ltd.).
Preferably, the detergent is 106D ultra-high base number synthetic calcium sulfonate, the product has excellent alkaline storage, good oil solubility and extremely strong acid neutralization capacity, can neutralize organic acid and inorganic acid in an oil product in time, and also has excellent high-temperature detergency and thermal stability, and the detergent is provided by Liaoning Jinzhou Huifengtian chemical Co., Ltd.
Preferably, the ashless dispersant adopts polyisobutylene succinimide, has good cleaning dispersibility, can inhibit carbon deposit on an engine piston and generation of a paint film, does not contain chlorine, has good compatibility with a detergent and an oxidation and corrosion inhibitor, and has good oil solubility, and the dispersant is provided by Xinxiangruifeng additive company Limited.
Preferably, the high-temperature antioxidant is mixed dialkyl diphenylamine, and is a high-efficiency high-temperature antioxidant, and the high-temperature antioxidant is provided by Shenyang Hualun oil chemical Co.
Preferably, the friction modifier is benzotriazole fatty acid amine salt, is an excellent multi-effect additive, has the performances of wear resistance, corrosion resistance, rust prevention, oiliness and the like, and is provided by Whitlepighian chemical company, Inc. in Jinzhou Liaoning.
Preferably, the extreme pressure antiwear agent is a multi-effect additive which takes amino thio-ester as a main component and has outstanding antiwear extreme pressure performance and obvious antioxidation and antiwear effects, and the extreme pressure antiwear agent is provided by Qingdao Liyu oil additive limited company.
Preferably, the viscosity index improver is a hydrogenated ethylene propylene isoprene type viscosity index improver, and the good permanent shear stability and high-temperature viscosity of the improver make a remarkable contribution to energy saving and fuel consumption, and the improver is one of SVM5 provided by BPT company in the United states.
Preferably, the antioxidant gum inhibitor is 2' 6-di-tert-butyl mixed phenol, available from Jinzhou Corntai lubricating oil additives, Inc.
Preferably, the pour point depressant is polymethacrylate, and the pour point depressant has a good pour point depression effect, so that the low-temperature fluidity of the lubricating oil can be well improved, and is provided by Whitlepighian chemical company, Inc. in Jinzhou Liaoning.
Preferably, the oil-soluble antirust agent is alkenyl succinate, and the oil-soluble antirust agent can remarkably reduce the interfacial tension of a lubricating oil system, has stronger interfacial film strength and higher interfacial shear viscosity, forms more stable emulsion, and is provided by Shenyang Hualun oil chemical Co.
The invention also provides a preparation method of the fully-synthetic staged marine internal combustion engine lubricating oil, which comprises the following steps:
(1) weighing the raw materials for later use;
(2) sequentially putting the weighed synthetic base oil and the weighed ester oil into a reaction kettle, starting stirring, and heating;
(3) continuously adding the weighed pour point depressant and the viscosity index improver into the reaction kettle, and quickly and uniformly stirring;
(4) adding the detergent, the ashless dispersant, the high-temperature antioxidant, the friction modifier and the extreme pressure antiwear agent weighed in the step (1), and continuously stirring;
(5) adjusting the stirring speed, continuously adding the antioxidant anti-gelling agent and the oil-soluble antirust agent weighed in the step (1), continuously stirring and uniformly mixing, pumping to a storage tank, and standing to obtain the fully-synthesized marine internal combustion engine lubricating oil added in stages.
Preferably, the heating temperature in the step (2) is 55-65 ℃.
Preferably, the stirring speed in the step (3) is 150-200r/min, and the stirring time is 25-35 min.
Preferably, in the step (4), the rotating speed is changed to 200-300 r/min, and the stirring time is 60-90 min.
Preferably, the stirring speed in the step (5) is 100-200 r/min, the stirring time is 75-90 min, and the standing time is 1-2 h.
Because medium-speed trunk piston diesel engines burn heavy sulfur-containing fuels and are easily polluted by water, the lubricating oil for internal combustion engines is required to ensure good lubrication of the engines, inhibit the formation of deposits and keep engine parts clean, and simultaneously has good acid neutralization capacity, water separation performance and alkali retention performance. Therefore, the selection of additives and composite formulation technology are obviously different from other internal combustion engine oils, and additives such as detergents, dispersants and antioxidants should be considered.
1. Selection of detergents: the temperature of the piston ring groove of the marine medium-speed cylindrical piston engine is high, oil oxidation products, fuel oil incomplete combustion products, salts formed after neutralization of sulfuric acid and the like can be deposited on the surface of the piston ring groove to cause clamping rings and cylinder biting, waste gas enters a crankcase to accelerate oil oxidation and aggravate lubricating oil pollution, meanwhile, a large amount of blow-by gas can cause piston overheating, the top of the piston is deformed, and the piston can be burned out in severe cases, so that the marine medium-speed engine oil has good cleaning and dispersing performance, and deposits in the piston ring groove, the top of an inner cavity of the piston and a cylinder are cleaned. During the circulation of the lubricating oil, the deposit is removed by the oil separator or the filter, so that the normal operation of the piston and the engine can be kept for a long time.
2. Selection of ashless dispersant: during the running process of an engine, products formed by incomplete combustion of fuel oil, oxidation products of engine oil and water interact to form sludge, mechanical impurities and the like are generated due to abrasion, and the presence of the substances is deposited to block an oil way, so that the oil supply is not smooth and faults are caused.
3. Selection of an antioxidant: the marine internal combustion engine oil needs to be recycled for a long time, organic acid, peroxide, colloid and the like are easily generated in a high-temperature thermal oxidation environment, the viscosity of the lubricating oil is increased by the products, nonferrous metals are corroded by the products, the cleaning and the lubrication of a piston and an engine are not facilitated, and the service life of the oil product is shortened. Therefore, lubricating oils are required to have good antioxidant and anti-corrosion properties, and antioxidant additives having excellent properties must be added.
The invention determines a compound formula which takes the ultrahigh base number synthetic calcium sulfonate as a main agent, an ashless dispersant and an antioxidant through a large number of simulation experiments in a laboratory, provides the requirements of high-speed impact load, high temperature and high pressure resistance and strong acid neutralization capacity of an engine, and provides the staged fully synthetic anti-combustion and rolling lubricating marine internal combustion engine oil with higher wear resistance and oxidation resistance and the preparation method thereof in order to solve the problems of the traditional marine internal combustion engine oil.
Compared with the prior art, the invention has the following beneficial effects:
1. the excellent acid neutralization capacity reduces the excessive deposit generated by heavy fuel oil at high temperature, and improves the efficiency of the engine;
2. extremely high thermal oxidation stability and thermal stability, and greatly reduces the generation of carbon deposit and paint film and the blockage of an oil-gas separator.
3. The kinematic viscosity of the lubricating oil of the internal combustion engine is improved, and simultaneously the fully synthetic flame-retardant, high-temperature and high-pressure resistant oil film strength is matched in stages according to requirements, so that the sealing and lubricating effects are fully achieved.
4. Excellent corrosion resistance and effective protection of the metal surface inside the engine.
5. The lubricating oil has excellent lubricating property, effectively reduces the abrasion of compressor parts, and simultaneously, the product introduces degradable materials and has important significance for developing green and environment-friendly products.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical indexes of the main raw materials in the embodiment of the invention are as follows:
durasyn synthetic base oil
Kinematic viscosity (100 ℃, cst): 9.3 viscosity index: 137
Pour point (. degree. C.): -36 flash point (. degree. C.): 295
2. Detergent: 106D ultra-high base number synthetic calcium sulfonate
Total base number, mgKOH/g: not less than 395 calcium content, m%: not less than 14
Open flash point, deg.c: not less than 180 turbidity, JTU: not more than 200
3. Ashless dispersant:
kinematic viscosity (100 ℃, cst): 130-230 flash point (DEG C): not less than 180
Total base number (mgKOH/g): 15-30 nitrogen content: 1.1 to 1.5 percent
4. High temperature antioxidant mixed dialkyl diphenylamine
Base number (mgKOH/g) 170 diphenylamine content not more than 1
5. Friction modifiers: benzotriazole fatty acid amine salt
The corrosion of the copper sheet (100 ℃,3h) is less than or equal to 1 moisture (mass fraction): 0.05 percent
6. Extreme pressure antiwear agent
Four ball machine test P8/N: more than or equal to 900 scrub spot diameters: less than or equal to 0.55mm
7. Viscosity index improver SVM5 (hydrogenated ethylene-propylene or isoprene type):
SSI is 0 to 5,
maximum dissolution ratio: 15 percent of
8. Polymethacrylate pour point depressant
Kinematic viscosity (100 ℃): 400mm2Flash point/s: 100 deg.C
Ash (%): pour point depression (DEG C) of less than or equal to 0.2: not less than 12
9. Antioxidant and antigum inhibitor: T502A 2' 6-di-tert-butyl mixed phenol
2.7-Di-tert-butyl-p-cresol content%: not less than 25.1% free phenol: less than or equal to 0.40
2.8% of di-t-butyl-p-cresol: not less than 25.2
10. Alkenyl succinic acid antirust agent
Artificial seawater (24hr) and stainless distilled water (24hr) and stainless
Example 1:
the method comprises the following steps of sequentially putting 62 parts of synthetic base oil (including 52 parts of PAO10 and 10 parts of 180I) and 12 parts of ester oil in a reaction kettle according to the weight part ratio, starting stirring, heating to 55 ℃, adding 0.4 part of pour point depressant and 12 parts of viscosity index improver, quickly stirring for 30min at the rotating speed of 300r/min, then adding 13 parts of detergent, 1.0 part of ashless dispersant, 0.5 part of high-temperature antioxidant, 0.1 part of friction modifier and 3 parts of extreme pressure antiwear agent at the rotating speed of 350r/min, continuously stirring for 65min, finally adding 0.5 part of antioxidant anticlouding agent and 0.05 part of oil-soluble antirust agent, stirring for 75min at the rotating speed of 150r/min, uniformly mixing, pumping to a storage tank, and standing for 1h to obtain L-15050 type internal combustion engine lubricating oil (the kinematic viscosity value at 100 ℃ is 18.2-20.1 t) for completely changing oil of a new engine and a greatly repaired engine.
Example 2:
the method comprises the steps of sequentially putting 59 parts of synthetic base oil (comprising 50 parts of PAO10 and 9 parts of 180I) and 12 parts of ester oil into a reaction kettle according to the weight part ratio, starting stirring, heating to 60 ℃, adding 0.4 part of pour point depressant, 14 parts of viscosity index improver, quickly stirring for 30min at the rotating speed of 300r/min, then adding 14 parts of detergent, 1.0 part of ashless dispersant, 1.0 part of high-temperature antioxidant, 0.1 part of friction modifier and 2.5 parts of extreme pressure antiwear agent at the rotating speed of 400r/min, continuously stirring for 70min, finally adding 1.0 part of antioxidant antigum inhibitor and 0.05 part of oil-soluble antirust agent, stirring for 80min at the rotating speed of 150r/min, uniformly mixing, pumping to a storage tank, standing for 1.5h, and obtaining L GT-35060 type marine internal combustion engine lubricating oil (the kinematic viscosity value at 100 ℃ is 20.1-21.9 cst), wherein the synthetic base oil is mainly used when being gradually added at the later stage to improve the comprehensive performance of the original engine.
Example 3 for the physical and chemical properties of the L GT-35060 lubricant prepared by the method of the invention, the main parameter indexes are shown in the table 1:
TABLE 1
As can be seen from Table 1, the detection results of the present invention all meet the relevant quality detection standards.
Example 4 comparison of the performance of L GT-35060 lubricant made by the process of the present invention with a mineral oil type formulated marine engine lubricant results are analyzed in Table 2:
TABLE 2
In conclusion, the marine internal combustion engine lubricating oil prepared by the method has more excellent performance than the mineral oil type marine internal combustion engine lubricating oil, meets or even exceeds the strict requirements of main marine engine manufacturers at home and abroad, and the product of the invention is already put into test operation on a plurality of ships, such as: german Manengco 7 ten thousand tons ship, (two stroke eight-cylinder engine parameters: 50000 horsepower, 36000 kilowatt, 900mm cylinder diameter and 50-90 rpm of rotation speed), Japanese Akaka ship engine (parameters: 6000 horsepower, 4410 kilowatt and 50-90 rpm of rotation speed) and ship martial art 56 (parameter: Guangdong firewood 3400 horsepower). The invention uses specially designed synthetic base oil and ester oil, selects a detergent with high alkali value and strong acid neutralization capacity and is prepared by blending with polyisobutylene succinimide with prominent dispersibility, and can realize excellent protection and lubrication on different types of ship engines under the operation condition that mineral oil type products cannot meet the requirements.
The invention has the advantages of excellent detergency and dispersivity, high-temperature oxidation resistance, good acid neutralization capacity, water separation performance and alkali retention performance, greatly superior performance to mineral oil type marine engine lubricating oil, strong acid neutralization capacity, low pour point, small volatility, long service life and the like by the unique formula design through reducing equipment failure and not easily generating carbon deposition under high temperature and high pressure, and can reduce the maintenance cost to the maximum extent and obtain the recommendation and approval of a plurality of marine engine manufacturers.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. The fully-synthetic staged marine internal combustion engine lubricating oil is characterized by comprising the following raw materials in parts by weight:
2. the fully synthetic staged marine engine lubricant according to claim 1, wherein said synthetic base oil is: PAO10 or 180I; the ester oil is diester or polyol ester.
3. The fully synthetic staged marine internal combustion engine lubricating oil of claim 1, wherein the detergent is an ultra high base number synthetic calcium sulfonate; the ashless dispersant is polyisobutylene succinimide; the high-temperature antioxidant is mixed dialkyl diphenylamine.
4. The fully synthetic staged marine internal combustion engine lubricating oil of claim 1, wherein the friction modifier is an amine salt of benzotriazole fatty acid; the pour point depressant is polymethacrylate.
5. The fully synthetic staged marine internal combustion engine lubricating oil of claim 1, wherein the viscosity index improver is a hydrogenated ethylene propylene isoprene; the antioxidant and antigum inhibitor is 2', 6-di-tert-butyl mixed phenol; the oil-soluble antirust agent is alkenyl succinate.
6. A method of preparing a fully synthetic staged marine internal combustion engine lubricating oil according to claims 1-5, comprising the steps of:
(1) weighing the raw materials of claims 1-5 for later use;
(2) sequentially putting the weighed synthetic base oil and the weighed ester oil into a reaction kettle, starting stirring, and heating;
(3) continuously adding the weighed pour point depressant and the viscosity index improver into the reaction kettle, and quickly and uniformly stirring;
(4) adjusting the stirring speed, adding weighed detergent, ashless dispersant, high-temperature antioxidant, friction modifier and extreme pressure antiwear agent, and continuing stirring;
(5) adjusting the stirring speed, continuously adding the weighed antioxidant anti-gelling agent and oil-soluble anti-rust agent, uniformly stirring, pumping to a storage tank, and standing to obtain the fully-synthetic marine internal combustion engine lubricating oil added in stages.
7. The method of claim 6, wherein the step of preparing a fully synthetic staged marine internal combustion engine lubricating oil comprises: the heating temperature in the step (2) is 55-65 ℃.
8. The method of claim 6, wherein the step of preparing a fully synthetic staged marine internal combustion engine lubricating oil comprises: the stirring speed in the step (3) is 150-200r/min, and the stirring time is 25-35 min.
9. The method of claim 6, wherein the step of preparing a fully synthetic staged marine internal combustion engine lubricating oil comprises: and (4) adjusting the stirring speed in the step (4) to be 200-300 r/min, and stirring for 60-90 min.
10. The method of claim 6, wherein the step of preparing a fully synthetic staged marine internal combustion engine lubricating oil comprises: the stirring speed of the step (5) is 100-200 r/min, the stirring time is 75-90 min, and the standing time is 1-2 h.
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