CN104046405A - Low pour point diesel fuel lubricity improver composition - Google Patents
Low pour point diesel fuel lubricity improver composition Download PDFInfo
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- CN104046405A CN104046405A CN201310077374.9A CN201310077374A CN104046405A CN 104046405 A CN104046405 A CN 104046405A CN 201310077374 A CN201310077374 A CN 201310077374A CN 104046405 A CN104046405 A CN 104046405A
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Abstract
The invention discloses a low pour point diesel fuel lubricity improver composition prepared by compounding a pour point reducer with fatty acid, fatty acid ester and oleic acid amide and the like, and the solidifying point of the combination can be obviously reduced.
Description
Technical field
The invention belongs to the additive technology that improves its lubricity when oil refining industry is produced low-sulfur diesel-oil, particularly a kind of low pour point diesel fuel lubricity improver composition
Background technology
The atmospheric environment of depending on for existence for further improving the mankind, improves exhaust emissions of diesel engine quality, and recent domestic fuel oil manufacturing enterprise starts to adopt deep processing process for refining, the low-sulfur diesel-oil that production sulphur content is feature lower than 0.05m%, low aromatic hydrocarbon content.Used in Diesel Engines low-sulfur diesel-oil significantly reduces particulate matter (PM) discharge that element sulphur and aromatic hydrocarbon cause, greatly extended the work-ing life of exhaust gas catalyst, but meanwhile, due in sweetening process, sulfide in diesel oil is present in aromatic hydrocarbons and polycyclic aromatic hydrocarbons mainly with heterocycle form, nonselective sweetening process have lubricity aromatic hydrocarbons, polycyclic aromatic hydrocarbons, containing oxygen, nitrogenous compound, also removed in the lump.Lubricating function element and material also remove thereupon, and diesel fuel lubricity performance also significantly reduces.Fuel Feeding System for Diesel Engine system is the important component part of engine, and the quality of its performance is very responsive to diesel engine condition, directly affects dynamic property and the economy of engine.These precision pairs of plunger and sleeve, needle-valve and needle-valve body, delivery valve and valve seat, under high speed, high pressure, high temperature or comparatively high temps and very little tolerance clearance, work, should mutually slide flexibly, in high-pressure oil, keep again stopping property, to guarantee supplying with at regular time and quantity atomization high pressure fuel in small, broken bits to combustion chamber.Its lubricated main fuel oil that relies on of these parts itself completes.If diesel oil anti-wear lubricating is bad, will cause that precise part overwear vt., quality of fit decline, fuel spray is bad, engine power is not enough or the problem such as unstable idle speed.Since phase at beginning of the nineties in last century research and extension low-sulfur diesel-oil, American-European countries has occurred that the accident of wear out failure appears in high-pressure fuel pump of diesel engine and oil thrower very soon continuously.Particularly advised altogether in the last few years injection system and drop into application, and greatly improved the operating pressure of oil pump, diesel fuel lubricity has been proposed to requirements at the higher level, the improvement of lubricating performance of low-sulfur diesel oil is extremely urgent.
Within 2011, China forces to have carried out the low-sulfur diesel-oil of " state three " standard in the whole country, and the oilness of diesel oil has been proposed to clear and definite standard and requirement, and the oilness that therefore adopts suitable technology to improve diesel oil has very real urgent row and the market requirement.It is the easiest using the method for Lubricating Additive of Diesel Fuel, is also the effective ways that the most extensively adopt at present.Each major oil companies of the world and additive company have all developed commercial Lubricating Additive of Diesel Fuel.Research China diesel oil is the oilness problem of low-sulfur, ultra-low-sulphur diesel particularly, and the oiliness additive of the applicable China of development diesel oil is significant.
At present, in the whole world, main refinery is used the lubricity improver of main flow widely, main defect is that these lubricity improver zero pour are higher at present, before use, need at the scene to carry out heat treated and make its liquefaction, use very inconvenient, especially at southern refinery, much do not possess the condition of heating additive, in the urgent need to using the additive of subzero diesel fuel lubricity.By technique, reducing diesel fuel lubricity at present has many documents and patent report, huge because of its tooling cost, applies at present less.Refinery needs a kind of method of low-cost reducing diesel fuel lubricity improving agent.The basic background that the present invention that Here it is produces
Summary of the invention
A kind of low pour point diesel fuel lubricity of the present invention improver composition composition, is characterized in that it contains:
(1) at least one diesel fuel lubricity improving agent, is glycerine monofatty ester, or the single acid of fat, or the mixture of their arbitrary combination
(2) at least one pour point depressant, is ethylene-vinyl acetate binary compound, or ethylene-vinyl acetate-tri-component ternary compounds, polyacrylamide pour depressant for lubricating oil, or the mixture of their arbitrary combination
(3) at least one amides anti-friction composition is amine hydroxybenzene
(4) at least one two class non-ionic (polymeric surfactant) demulsifier compound thing
(5) high flash point aromatic solvent
Wherein (1) component Optimum Contents is 30-95.5% (quality); (2) component content is 0.05-5.5% (quality); (3) component Optimum Contents is 2.6-35% (quality).(4) component content is 0.5-0.8%% (quality), and all the other are high flash point aromatic solvent
Compositions of additives disclosed by the invention, its novelty is, the lubricity improvers such as the pour point depressant too using in lubricating oil or diesel oil and lipid acid and fatty acid ester and amine hydroxybenzene is composite, through test, be surprised to find, in the essentially identical situation of result of use, can reduce significantly the zero pour of diesel fuel lubricity improving agent.Compare with technique pour point depression process, its cost is 10%, simultaneously to lubrication modifier result of use without any negative impact.
Adding a kind of two class non-ionic (polymeric surfactant) demulsifier compound things, is mainly the muddiness of the diesel fuel lubricity improving agent that causes for fear of trace water.While also avoiding using lubricity improver, if diesel fuel tank has a small amount of moisture content, cause the long emulsification of diesel oil, the existence of these Emulsion Phases, not only has a strong impact on the outward appearance of diesel oil and the significantly reduction diesel fuel lubricity of trace water simultaneously.
Additive method for making:
The preparation method of above-mentioned compositions of additives is: first needed component (1) (5) adds in the enamel blending kettle of belt stirrer in proportion, secondly add in proportion required component (2) in blending kettle, at 60-70 ℃, stir after 4 hours, add component (3), component (4), at 40-50 ℃, stir 2 hours, all dissolve to mixture, and homogeneous transparent.
In order to screen additive component and compositions of additives, the present invention has adopted HFRR test method to test in laboratory, on HFRR (the High Frequency Reciprocating Rig) trier that the wearing test of diesel oil is produced in Britain PCs company, by IS012156-1 method, undertaken, test conditions is: 60 degrees Celsius of temperature, load 1.96N, frequency 50Hz, 4500 seconds stroke 10mm. time.For removing the impact of atmospheric moisture on wearing and tearing, trier is controlled at certain scope by standard method by humidity, and experiment is finished to rear surveyed wear scar diameter and carry out humidity correction, show that WSL4-test Instrumental records frictional coefficient and resistance automatically, and average.
Effect of the present invention further illustrates by the following examples.But should understand, the following examples do not limit the scope of the invention, any change that does not exceed design of the present invention and scope, all within of the present invention enclosing.
Embodiment
The aromatic hydrocarbons boiling range that experiment is selected is 187～203 degrees Celsius, and close flash point is greater than 65 degrees Celsius, and viscosity is 0.3～2.1m m
2the aromatic solvent naphtha of/s.
Test is indicated, adds amine hydroxybenzene and pour point depressant, has improved constantly the oilness of diesel oil, improves zero pour simultaneously.
Claims (5)
1. a low pour point diesel fuel lubricity improver composition compositions of additives, is characterized in that it contains:
(1) at least one diesel fuel lubricity improving agent, is glycerine monofatty ester, or the single acid of fat, or the mixture of their arbitrary combination
(2) at least one diesel pour inhibitor, is ethylene-vinyl acetate binary compound, or ethylene-vinyl acetate-tri-component ternary compounds, or the mixture of their arbitrary combination
(3) at least one amides anti-friction composition is amine hydroxybenzene
(4) at least one two class non-ionic (polymeric surfactant) demulsifier compound thing
(5) high flash point aromatic solvent.
2. compositions of additives according to claim 1, is characterized in that (1) component Optimum Contents is 30-95.5% (quality).
3. compositions of additives according to claim 1, is characterized in that (2) ethylene-vinyl acetate binary compound, or ethylene-vinyl acetate-tri-component ternary compounds, and content is 0.05-5.5% (quality).
4. compositions of additives according to claim 1, is characterized in that (3) component Optimum Contents is 2.6-3.5% (quality).
5. compositions of additives according to claim 1, it is characterized in that at least one two class non-ionic (polymeric surfactant) demulsifier compound thing of (4) component, the first kind is that HLB is 5-9, molecular weight is the nonionic surface active agent of 2000-15000, and Equations of The Second Kind HLB is 12-16 nonionic surface active agent.Demulsifier compound thing content is 0.5-0.8% (quality).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310077374.9A CN104046405A (en) | 2013-03-12 | 2013-03-12 | Low pour point diesel fuel lubricity improver composition |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310077374.9A CN104046405A (en) | 2013-03-12 | 2013-03-12 | Low pour point diesel fuel lubricity improver composition |
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| CN104046405A true CN104046405A (en) | 2014-09-17 |
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| CN201310077374.9A Pending CN104046405A (en) | 2013-03-12 | 2013-03-12 | Low pour point diesel fuel lubricity improver composition |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635792A (en) * | 2020-05-27 | 2020-09-08 | 上海中太行之光能源有限公司 | Environment-friendly antifreeze agent for diesel oil and preparation method thereof |
-
2013
- 2013-03-12 CN CN201310077374.9A patent/CN104046405A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111635792A (en) * | 2020-05-27 | 2020-09-08 | 上海中太行之光能源有限公司 | Environment-friendly antifreeze agent for diesel oil and preparation method thereof |
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Addressee: ZHONGHAI YABAO (BEIJING) TECHNOLOGY DEVELOPMENT CO., LTD. Document name: Notification of before Expiration of Request of Examination as to Substance |
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20140917 |