CN110819427A - Lubricating oil for methanol fuel engine and preparation method thereof - Google Patents
Lubricating oil for methanol fuel engine and preparation method thereof Download PDFInfo
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- CN110819427A CN110819427A CN201911027876.4A CN201911027876A CN110819427A CN 110819427 A CN110819427 A CN 110819427A CN 201911027876 A CN201911027876 A CN 201911027876A CN 110819427 A CN110819427 A CN 110819427A
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- Prior art keywords
- olefin
- lubricating oil
- methanol
- metallocene poly
- viscosity metallocene
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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
- C10M169/045—Mixtures of base-materials and additives the additives being a mixture of compounds of unknown or incompletely defined constitution and non-macromolecular compounds
-
- 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
- C10M2205/00—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions
- C10M2205/02—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers
- C10M2205/0206—Organic macromolecular hydrocarbon compounds or fractions, whether or not modified by oxidation as ingredients in lubricant compositions containing acyclic monomers used as base material
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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
-
- 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
- C10M2223/00—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions
- C10M2223/02—Organic non-macromolecular compounds containing phosphorus as ingredients in lubricant compositions having no phosphorus-to-carbon bonds
- C10M2223/04—Phosphate esters
- C10M2223/045—Metal containing thio derivatives
Abstract
The invention provides a lubricating oil for a methanol fuel engine and a preparation method thereof, wherein the lubricating oil comprises the following components, by weight, base oil and an additive, wherein the addition amount of the additive is 12.021-21.92% of the base oil, the base oil comprises three components, namely low-viscosity metallocene poly α olefin, medium-viscosity metallocene poly α olefin and high-viscosity metallocene poly α olefin, and the additive comprises 8 components, namely metal phenate, dialkyl dithiophosphate and mixed zinc salt of carboxylic acid, acid neutralizer, mixed ashless dispersant, antirust agent AR-CU, aminothioester, 2# compound antifoaming agent and anti-emulsifier DL-32.
Description
Technical Field
The invention belongs to the technical field of chemical industry, and particularly relates to lubricating oil for a methanol fuel engine and a preparation method thereof.
Background
The petroleum is used as a non-renewable resource, the reserve is less and less, and the development of petroleum resource replaceable products becomes a major topic of the world science and technology. Methanol, as a coal-to-liquids product, temporarily reduces the rate of use of petroleum resources. At present, with the continuous enhancement of the environmental protection consciousness of the world, the control of the exhaust emission becomes an important link for protecting the environment. Methanol is used as fuel, and the exhaust emission level of the engine is low, so that the methanol is applied to various countries in the world as the fuel of the engine. However, when methanol is used as fuel, a series of technical problems are generated in the engine lubricating oil system, such as: water, methanol and the like derived from methanol combustion enter a crankcase to cause emulsification, corrosion and the like, and the current commercially available lubricating oil cannot be used as an engine oil of a methanol fuel, so that the research and development of a new lubricating oil for a methanol fuel engine is urgently needed. Chinese patent application 2009102239548 provides a lubricating oil for methanol fuel engine and a preparation method thereof, wherein a specific viscosity index improver (polymethacrylate) is selected to prevent modification of OCP in the traditional lubricating oil by methanol and resist rapid aging of the lubricating oil caused by methyl ether, but the lubricating oil does not consider the swelling of the methanol to rubber and the corrosion action of nonferrous metals, so that the damage of the methanol to the viscosity index improver is reduced, but the viscosity index improver is inevitably used and cannot be eliminated.
Disclosure of Invention
In order to solve the above problems, the present invention provides a lubricating oil for a methanol fuel engine and a method for preparing the same.
The technical scheme is that the lubricating oil for the methanol fuel engine comprises, by weight, base oil and an additive, wherein the additive accounts for 12.021-21.92% of the base oil, the base oil at least comprises three components, namely 20-50% of low-viscosity metallocene poly α olefin, 45-65% of medium-viscosity metallocene poly α olefin and 5-15% of high-viscosity metallocene poly α olefin, the additive at least comprises 8 components, namely 0.3-1.5% of metal phenolate, 1-3% of mixed zinc salt of dialkyl dithiophosphoric acid and carboxylic acid, 2-6% of acid neutralizing agent, 7-10% of mixed ashless dispersant, 0.01-0.5% of antirust agent AR-CU, 0.5-2% of aminothioester, 0.001-0.02% of 2# composite antifoaming agent and 0.01-0.1% of anti-emulsifier DL-32;
preferably, the anti-rust agent comprises the following components in percentage by weight, base oil and additive, wherein the additive is added in an amount of 14.86% of the base oil, the base oil comprises three components, namely 53% of low-viscosity metallocene poly α olefin, 50% of medium-viscosity metallocene poly α olefin and 7% of high-viscosity metallocene poly α olefin, and the additive comprises 8 components, namely 1% of metal phenolate, 1.5% of mixed zinc salt of dialkyl dithiophosphate and carboxylic acid, 3% of acid neutralizer, 8% of mixed ashless dispersant, 0.3% of anti-rust agent AR-CU, 1% of aminothioester, 0.01% of 2# compound anti-foaming agent and 0.05% of anti-emulsifier DL-32;
preferably, the low viscosity metallocene α olefin is SpectraSyn Elite 4, the medium viscosity metallocene α olefin is SpectraSyn Elite10, and the high viscosity metallocene α olefin is SpectraSyn Elite 600;
preferably, the acid neutralizing agent is a mixture of high-base-number synthetic calcium sulfonate and sulfurized calcium alkyl phenate, and the ratio is (1-3): (1-3);
preferably, the acid neutralizing agent is a mixture of high-base-number synthetic calcium sulfonate and sulfurized calcium alkyl phenate, and the ratio of the acid neutralizing agent to the calcium alkyl phenate is 2: 1;
preferably, the mixed ashless dispersant is a mixture of boronized polyisobutylene succinimide and a polymer dispersant, the molecular weight is 3000-7000, and the mixing ratio is 4: 1;
preferably, the antirust agent AR-CU is an imidazoline oil-soluble antirust agent;
the method for preparing the synthetic high-performance lubricating oil special for the methanol fuel engine comprises the following steps of:
(1) adding low-viscosity metallocene poly α olefin, medium-viscosity metallocene poly α olefin, high-viscosity metallocene poly α olefin, 2# composite antifoaming agent and DL-32 anti-emulsifier into a reaction kettle, heating to 60-70 ℃, and stirring for 30-60 minutes;
(2) sequentially adding metal phenate, dialkyl dithiophosphate and mixed zinc salt of carboxylic acid, acid neutralizer, mixed ashless dispersant, antirust agent AR-CU and aminothio ester, stirring for 60-120 minutes at constant temperature of 60-70 ℃, and obtaining a finished product after blending by a 15-micrometer filtering system.
The metal in the metal phenate treats the hydroxyl in the alkylphenol sulfide to form oil-soluble metal salt which has the double functions of cleaning and resisting oxygen.
The mixed zinc salt of dialkyl dithiophosphate and carboxylic acid has higher thermal oxidation stability.
The antirust agent AR-CU is an imidazoline oil-soluble antirust agent, and has good antirust performance on nonferrous metals and ferrous metals.
The amino thioester is a multi-effect additive, and has outstanding antiwear extreme pressure property and good antioxidant effect.
The 2# composite anti-foaming agent is a non-silicon composite anti-foaming agent, has excellent oil solubility, does not need to be diluted, and has more efficient anti-foaming capability on substances with strong foaming performance.
DL-32 as emulsifier is polyether polymer.
The invention has the beneficial effects that: according to the invention, because no viscosity index improver is added, adverse effects such as coking, carbon deposition and viscosity reduction caused by damage of methanol to the viscosity index can be eliminated, the raw materials SpectraSyn Elite 4 and SpectraSyn Elite10 which enable rubber to be slightly soluble are added, adverse effects such as rubber swelling caused by methanol are solved, high-base-number-retention additive and composite anticorrosive agent are added, corrosion of methanol to cast iron, cast aluminum and copper parts is eliminated, and excellent emulsifier is added, so that emulsion corrosion caused by methanol with water entering a crankcase is eliminated.
Detailed Description
For a better understanding and implementation, a synthetic high performance lubricant for methanol fueled engines and a method of making the same is described in detail below:
example 1: a lubricating oil for a methanol-fueled engine, prepared using a SpectraSyn Elite 4: 430kg, SpectraSyn Elite 10: 500kg, SpectraSyn Elite 600: 70kg, metal phenoxide salt: 10kg, dialkyl dithiophosphoric acid and carboxylic acid mixed zinc salt: 15kg, acid neutralizer: 30kg, mixing ashless dispersant: 80kg, 3kg of antirust agent AR-CU, 3kg of amino thioester: 10kg, 2# composite antifoaming agent: 0.1kg of emulsifier resistant DL-32:0.5kg
The preparation method comprises (1) adding low-viscosity metallocene poly α olefin, medium-viscosity metallocene poly α olefin, high-viscosity metallocene poly α olefin, 2# composite antifoaming agent and DL-32 anti-emulsifying agent into a reaction kettle, heating to 65 ℃, and stirring for 45 minutes;
(2) sequentially adding metal phenate, dialkyl dithiophosphate and mixed zinc salt of carboxylic acid, acid neutralizer, mixed ashless dispersant, antirust agent AR-CU and aminothio ester, stirring for 90 minutes at constant temperature of 65 ℃, and obtaining a finished product after blending by a 15-micron filtering system. The quality index 1 is as follows:
comparative example 1 provides a lubricating oil for a methanol-fueled engine, differing from example 1 only in that: the SpectraSyn Elite600 was removed, polymethacrylate was used, and DL-32 was removed, and the specific process was as follows
A lubricating oil for a methanol-fueled engine, prepared using a SpectraSyn Elite 4: 430.5kg, SpectraSynElite 10: 500kg, polymethacrylate: 70kg, metal phenoxide salt: 10kg, dialkyl dithiophosphoric acid and carboxylic acid mixed zinc salt: 15kg, acid neutralizer: 30kg, mixing ashless dispersant: 80kg, 3kg of antirust agent AR-CU, 3kg of amino thioester: 10kg, 2# composite antifoaming agent: 0.1kg
The preparation method comprises the following steps of (1) putting low-viscosity metallocene poly α olefin, medium-viscosity metallocene poly α olefin, polymethacrylate and 2# composite antifoaming agent into a reaction kettle, heating to 65 ℃, and stirring for 45 minutes;
(2) sequentially adding metal phenate, dialkyl dithiophosphate and mixed zinc salt of carboxylic acid, acid neutralizer, mixed ashless dispersant, antirust agent AR-CU and aminothio ester, stirring for 90 minutes at constant temperature of 65 ℃, and obtaining a finished product after blending by a 15-micron filtering system. The quality index 2 is as follows:
comparing example 1 with comparative example 1, it can be seen that in example 1, due to the use of SpectraSyn Elite600 instead of the conventional viscosity index improver and the addition of DL-32, the adverse effects of coking, carbon deposition, viscosity reduction and the like caused by the damage of methanol to the viscosity index can be eliminated, the addition of the excellent anti-emulsifying agent can eliminate the emulsion corrosion caused by the water carried by the methanol entering the crankcase, and the corrosion of the methanol to cast iron, cast aluminum and copper parts can be eliminated simultaneously, compared with comparative example 1.
Comparative example 2: a lubricating oil for a methanol-fueled engine is provided, differing from example 1 only in that: the SpectraSyn Elite 4 and the SpectraSyn Elite10 are removed and replaced by 150N and 500N, and the specific process is as follows:
a lubricating oil for a methanol-fueled engine, prepared from 150N: 430kg, 500N: 500kg, SpectraSyn Elite 600: 70kg, metal phenoxide salt: 10kg, dialkyl dithiophosphoric acid and carboxylic acid mixed zinc salt: 15kg, acid neutralizer: 30kg, mixing ashless dispersant: 80kg, 3kg of antirust agent AR-CU, 3kg of amino thioester: 10kg, 2# composite antifoaming agent: 0.1kg of emulsifier resistant DL-32:0.5kg
The preparation method comprises (1) adding low-viscosity metallocene poly α olefin, medium-viscosity metallocene poly α olefin, high-viscosity metallocene poly α olefin, 2# composite antifoaming agent and DL-32 anti-emulsifying agent into a reaction kettle, heating to 65 ℃, and stirring for 45 minutes;
(2) sequentially adding metal phenate, dialkyl dithiophosphate and mixed zinc salt of carboxylic acid, acid neutralizer, mixed ashless dispersant, antirust agent AR-CU and aminothio ester, stirring for 90 minutes at constant temperature of 65 ℃, and obtaining a finished product after blending by a 15-micron filtering system. Quality index 3 is as follows:
comparing example 1 with comparative example 2, it can be seen that example 1 uses SpectraSyn Elite 4 and SpectraSyn Elite10 instead of 150N and 500N, thereby solving adverse effects such as rubber swelling caused by methanol and preventing oil leakage of the engine.
Claims (8)
1. The lubricating oil for the methanol fuel engine is characterized by comprising 12.021-21.92 wt% of base oil and additives, wherein the additives are 12.021-21.92 wt% of the base oil, the base oil comprises 20-50 wt% of low-viscosity metallocene poly α olefin, 45-65 wt% of medium-viscosity metallocene poly α olefin and 5-15 wt% of high-viscosity metallocene poly α olefin, and the additives comprise 8 components, namely 0.3-1.5 wt% of metal phenolate, 1-3 wt% of mixed zinc salt of dialkyl dithiophosphoric acid and carboxylic acid, 2-6 wt% of an acid neutralizing agent, 7-10 wt% of a mixed ashless dispersant, 0.01-0.5 wt% of an antirust agent AR-CU, 0.5-2 wt% of aminothioester, 0.001-0.02 wt% of a 2# composite antifoaming agent and 0.01-0.1 wt% of an anti-emulsifier DL-32.
2. The lubricating oil for methanol-fueled engines according to claim 1, comprising, in weight percent, a base oil and additives in an amount of 14.86% based on the base oil, the base oil comprising three components of 53% low viscosity metallocene poly α olefin, 50% medium viscosity metallocene poly α olefin and 7% high viscosity metallocene poly α olefin, the additives comprising 8 components of 1% metal phenolate, 1.5% dialkyl dithiophosphoric acid and a mixed zinc salt of a carboxylic acid, 3% acid neutralizing agent, 8% mixed ashless dispersant, 0.3% rust inhibitor AR-CU, 1% aminothio ester, 0.01% 2# complex antifoaming agent and 0.05% anti-emulsifier DL-32.
3. The lubricating oil for methanol-fueled engines according to claim 1 or 2, wherein the low viscosity metallocene poly α olefin is SpectraSyn Elite 4, the medium viscosity metallocene poly α olefin is SpectraSyn Elite10, and the high viscosity metallocene poly α olefin is SpectraSyn Elite 600.
4. The lubricating oil for methanol fuel engines according to claim 1 or 2, wherein the acid neutralizing agent is a mixture of high base number synthetic calcium sulfonate and sulfurized calcium alkyl phenate in a ratio of (1-3): (1-3).
5. The methanol fueled engine of claim 4 wherein the acid neutralizing agent is a mixture of overbased synthetic calcium sulfonate and sulfurized calcium alkyl phenate in a ratio of 2: 1.
6. the lubricating oil for methanol-fueled engines according to claim 1 or 2, wherein the mixed ashless dispersant is a mixture of a boronated polyisobutylene succinimide and a polymeric dispersant, and has a molecular weight of 3000 to 7000, and a mixing ratio of 4: 1.
7. The lubricating oil for a methanol-fueled engine according to claim 1 or 2, characterized in that the rust inhibitor AR-CU is an imidazoline-based oil-soluble rust inhibitor.
8. A method of making a lubricating oil for a methanol fuel engine according to any of claims 1 to 6, comprising the steps of:
(1) adding low-viscosity metallocene poly α olefin, medium-viscosity metallocene poly α olefin, high-viscosity metallocene poly α olefin, 2# composite antifoaming agent and DL-32 anti-emulsifier into a reaction kettle, heating to 60-70 ℃, and stirring for 30-60 minutes;
(2) sequentially adding metal phenate, dialkyl dithiophosphate and mixed zinc salt of carboxylic acid, acid neutralizer, mixed ashless dispersant, antirust agent AR-CU and aminothio ester, stirring for 60-120 minutes at constant temperature of 60-70 ℃, and obtaining a finished product after blending by a 15-micrometer filtering system.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114874829A (en) * | 2022-03-24 | 2022-08-09 | 江苏龙蟠科技股份有限公司 | Lubricating oil composition for methanol engine and preparation method 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 |
| CN116904244A (en) * | 2023-07-17 | 2023-10-20 | 亚培烯科技(上海)有限公司 | Base oil composition and application thereof in preparation of electric automobile fluid |
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Application publication date: 20200221 |