CN101007969B - Preparation method of concocted diesel oil - Google Patents

Preparation method of concocted diesel oil Download PDF

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CN101007969B
CN101007969B CN2006100023808A CN200610002380A CN101007969B CN 101007969 B CN101007969 B CN 101007969B CN 2006100023808 A CN2006100023808 A CN 2006100023808A CN 200610002380 A CN200610002380 A CN 200610002380A CN 101007969 B CN101007969 B CN 101007969B
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diesel oil
diesel
concocted
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CN101007969A (en
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韦淡平
兰晓艳
齐浩
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Sinopec Research Institute of Petroleum Processing
China Petroleum and Chemical Corp
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Sinopec Research Institute of Petroleum Processing
China Petroleum and Chemical Corp
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Abstract

The inventon relates to a method for blending diesel, comprising following steps: (1) choosing two or more kinds of diesel, (2) blending with a certain ratio and getting blending diesel, testing the kinematic viscosity at 40 Deg. C for this blending diesel, testing or counting the sulfur content, total aromatic hydrocarbons content, polycyclic aromatics content and end point; (3) counting HFRR grinded spot diameter according to formula (1)- (5) in the instruction manual; (4) if the counted HFRR grinded spot diameter is in the intended range, the blending diesel will be needed diesel, and if not, repeating step (2)- (4) until the HFRR grinded spot diameter is in the intended range. The invention can conveniently blend diesel that meets II kind diesel standard.

Description

The preparation method of concocted diesel oil
Technical field
The present invention relates to a kind of resistance to abrasion blending method of the diesel oil of low sulfur and low aromatics content preferably.
Background technology
Diesel oil well is widely used in diesel-powered car, heavy vehicle, railway locomotive, farm machinery, boats and ships naval vessels, engineering and mining machinery etc. because of fuel economy.Wherein the specification of quality of vehicle light diesel fuel is high more a lot of than other diesel oil.Because the objectionable impurities (SO in the sulphur content of vehicle light diesel fuel and polycyclic aromatic hydrocarbons (total aromatic hydrocarbons) content and the waste gas 2, NO X, CO, CO 2, unburnt hydrocarbon polymer etc.) and the discharging of particulate matter (black smoke soot) have corresponding relation, western countries such as America and Europe just begin to force to carry out low-sulfur diesel-oil the beginning of the nineties in last century, its sulphur content generally is less than 0.05m%, total aromaticity content is less than 30%.After entering 21 century, the environmental regulation of relevant motor vehicle emission is strict more, impels the sulphur content of derv fuel oil sharply to descend.Sulphur content as the diesel oil on the present Sweden market generally is lower than 50 μ g/g, and Europe will be carried out the standard that restriction derv fuel oil sulphur content is not higher than 50Nppm in 2005, and the sulphur content of Britain's highway diesel oil in 2006 will drop to below the 15 μ g/g.
The standard of the existing solar oil of China is GB/252-2000, limits the diesel oil sulphur content and is not more than 0.05m%, and total aromaticity content is not more than 25%.Beijing plans to reach EUROIII Emission Standard at oil quality in 2008.
Research (Wear, 111:217-235,1986 of the light gentle Spikes of the Wei eighties in last century.Petroleum journal (refining of petroleum), 2 (3), 1986; 4 (1), 1988; 6 (1), 1990) show that oxygenatedchemicals in the diesel oil, nitrogenous compound and polycyclic aromatic hydrocarbons are the greatest factor of decision diesel fuel lubricity.Domestic sulphur competitively falls, falling aromatic hydrocarbons, to release the direct result of clean diesel be to descend rapidly with the above-mentioned wear-resistant component concentrations of sulfur-containing impurities coexistence in the solar oil.For the derv fuel oil that adopts the deep hydrogenation explained hereafter; component with good wear-resistant effect has dropped to very low level; the HFRR wear scar diameter is greater than 460 μ m, can't satisfy in the low-sulfur diesel-oil specification the requirement of resistance to abrasion, also just can't protect oil pump and nozzle protected from wear to lose efficacy effectively.Improve the oilness of these clean diesels, except blending biofuel (vegetable and animals oils fatty acid methyl ester) and interpolation diesel antiwear additive (lipid acid, acid amides and fatty acid ester etc.), can also adopt the method for controlling clean diesel physico-chemical property and chemical constitution to improve the oilness of diesel oil.
ExxonMobil company discloses a kind of composition of derv fuel oil in WO 01/81510A (2001) patent, boiling range is 190 ℃-400 ℃, T10＞205 ℃, S＜100wppm, total aromatic hydrocarbons 15-35wt%, polycyclic aromatic hydrocarbons＜3wt%, total aromatic hydrocarbons: polycyclic aromatic hydrocarbons＞11: 1, other performance has to reduce discharging preferably and puts effect, if can not added various additives such as anti-wear agent, pour point depressant, metal passivator, purification agent completely and be solved.But total aromaticity content of this class diesel oil and final boiling point obviously do not meet the standard of the above clean diesel of II class.
The patent of Mitsubishi Co., Ltd. (spy opens 2001-303078, open day 2001.10.31) discloses a kind of diesel oil that is applicable to high medium-speed diesel, is a kind of lightweight oil composition that has good emission performance and oilness simultaneously, limits 1170≤T 50+ T 70+ T 90+ T 95, mononuclear aromatics v%+5 * (di pah v%)+10 * (three rings and the above aromatic hydrocarbons v% of three rings)＜20,0.690≤[d 15-0.001648 * total aromatic hydrocarbons v%+0.000398 * T 50], whether sulphur content＜50mppm can not test by HFRR but indicate the oil that satisfies above-mentioned requirements, when oilness is not enough, also need add a certain amount of anti-wear agent and other additive.Also point out T 10Too high cold startability, the T of influencing 90Too low oilness, the T of influencing 50+ T 70+ T 90+ T 95＜1170 ℃ of lubricating requirement that are difficult to guarantee oil pump and nozzle, but do not specify requirement how to select the T value can satisfy oilness.
Therefore, need provide a kind of low sulfur and low aromatics content, and kinematic viscosity and oilness all meet the blending method of the clean diesel of respective standard.
Summary of the invention
Through a large amount of groping and testing, the inventor has found that a kind of two or more diesel component of uses concocts, and manufacturing has the method for the clean diesel of good lubricity.
The object of the present invention is to provide a kind of method of concocted diesel oil, comprise the steps:
1) chooses two or more different diesel component;
2) select certain proportion that each diesel component is mixed, obtain concocted diesel oil, measure the kinematic viscosity of 40 ℃ of this concocted diesel oils, measure or calculate the sulphur content of concocted diesel oil, total aromaticity content, polycyclic aromatic hydrocarbon content and final boiling point;
3) calculate the HFRR wear scar diameter with following formula:
W AR＝(-3.68η 40℃+11.36)·ψ AR
Wherein, W ARGetting this value during for negative value is zero (1)
W AK＝[4.6η 40℃/(0.95η 40℃-0.4)]·(100-ψ AR) (2)
Φ 1＝0.5[η 40℃+(η 40℃ 2+1) 0.5]·η 40℃ -1-0.1 (3)
Φ 2＝0.5lg(ψ s·ψ PA)-0.3
Wherein, work as T EP* ψ S* ψ PA＜10 5The time, Φ 2Get 1 (4)
In the formula,
η 40 ℃Be the kinematic viscosity of 40 ℃ of concocted diesel oils, the mm of unit 2/ s;
ψ ARBe the mass percent of total aromatic hydrocarbons in the concocted diesel oil, the % of unit;
ψ sBe the sulphur content in the concocted diesel oil, the μ g/g of unit;
ψ PABe the mass percent of the polycyclic aromatic hydrocarbons in the concocted diesel oil, the % of unit;
T EPBe the final boiling point of concocted diesel oil, unit ℃;
W ARFor total aromatic hydrocarbons in the concocted diesel oil to the contribution of wear scar diameter, the μ m of unit;
W AKBe the contribution of alkane in the concocted diesel oil, the μ m of unit to wear scar diameter;
Φ 1And Φ 2Be the correction coefficient of wearing and tearing, the kinematic viscosity of reflection concocted diesel oil, sulphur content, total aromaticity content, polycyclic aromatic hydrocarbon content, final boiling point are to the influence of wear scar diameter;
With the above following formula of substitution as a result, the HFRR that calculates corresponding concocted diesel oil calculates wear scar diameter,
W＝W AR+W AK·Φ 1·Φ 2 -1 (5)
In the formula,
W is that the HFRR of concocted diesel oil calculates wear scar diameter, the μ m of unit;
4) if the HFRR of concocted diesel oil calculates wear scar diameter in pre-determined range, then this concocted diesel oil is required diesel oil; If the HFRR of concocted diesel oil calculates wear scar diameter not in pre-determined range, repeating step (2)～(4) then are in the pre-determined range until the wear scar diameter of concocted diesel oil.
In a preferred embodiment, certain proportion step 2) is determined based on following method: according to one or the multinomial proportional range of determining each diesel component among the sulphur content of each component, total aromaticity content, polycyclic aromatic hydrocarbon content and the final boiling point.
In another preferred embodiment, concocted diesel oil meets the following conditions: 40 ℃ kinematic viscosity 2.0 mm 2/ s≤η 40 ℃4.0mm 2/ s, total aromaticity content ψ AR≤ 25m%, polycyclic aromatic hydrocarbon content ψ PA≤ 5m%, sulphur content ψ s≤ 300 μ g/g, final boiling point T EP≤ 365 ℃, and HFRR wear scar diameter W≤460 μ m.
Another object of the present invention is to provide a kind of method of calculating diesel oil HFRR wear scar diameter, comprise the steps:
1) measures the kinematic viscosity of 40 ℃ of diesel oil, measure or calculate the sulphur content of diesel oil, total aromaticity content, polycyclic aromatic hydrocarbon content and final boiling point;
2) calculate the HFRR wear scar diameter with following formula:
W AR＝(-3.68η 40℃+11.36)·ψ AR
Wherein, W ARGetting this value during for negative value is zero (1)
W AK＝[4.6η 40℃/(0.95η 40℃-0.4)]·(100-ψ AR) (2)
Φ 1＝0.5[η 40℃+(η 40℃ 2+1) 0.5]·η 40℃ -1-0.1 (3)
Φ 2＝0.5lg(ψ s·ψ PA)-0.3
Wherein, work as T EP* ψ S* ψ PA＜10 5The time, Φ 2Get 1 (4)
In the formula,
η 40 ℃Be the kinematic viscosity of 40 ℃ of diesel oil, the mm of unit 2/ s;
ψ ARBe the mass percent of total aromatic hydrocarbons in the diesel oil, the % of unit;
ψ sBe the sulphur content in the diesel oil, the μ g/g of unit;
ψ PABe the mass percent of the polycyclic aromatic hydrocarbons in the diesel oil, the % of unit;
T EPBe diesel-fuel end point, unit ℃;
W ARFor total aromatic hydrocarbons in the diesel oil to the contribution of wear scar diameter, the μ m of unit;
W AKBe the contribution of alkane in the diesel oil, the μ m of unit to wear scar diameter;
Φ 1And Φ 2Be the correction coefficient of wearing and tearing, the kinematic viscosity of reflection diesel oil, sulphur content, total aromaticity content, polycyclic aromatic hydrocarbon content, final boiling point are to the influence of wear scar diameter;
With the above following formula of substitution as a result, the HFRR that calculates corresponding diesel oil calculates wear scar diameter,
W＝W AR+W AK·Φ 1·Φ 2 -1 (5)
In the formula,
W is that the HFRR of diesel oil calculates wear scar diameter, the μ m of unit;
The invention has the advantages that, under the situation that does not add anti-wear agent, the sulphur content of concocted diesel oil, total aromaticity content, polycyclic aromatic hydrocarbon content and kinematic viscosity all can satisfy for example requirement of II class diesel oil standard, and has a good abrasion resistance, for example can reach the requirement (HFRR wear scar diameter≤460 μ m) of II class diesel oil, have emission behavior preferably simultaneously.
Embodiment
In this manual, always aromaticity content is meant mononuclear aromatics content and polycyclic aromatic hydrocarbon content sum.Polycyclic aromatic hydrocarbons comprises di pah, thrcylic aromatic hydrocarbon and the above aromatic hydrocarbons of three rings.Mononuclear aromatics comprises, for example alkylbenzene, indane, naphthane, indenes class etc.Polycyclic aromatic hydrocarbons comprises, for example naphthalene class, acenaphthene class, acenaphthylene class etc.
The method of measuring kinematic viscosity, sulphur content, total aromaticity content, polycyclic aromatic hydrocarbon content and the final boiling point of each diesel component or concocted diesel oil has been conventionally known to one of skill in the art.For example, adopt GB/T 265 or GB/T 11137 methods to measure kinematic viscosity; Adopt alkane, mononuclear aromatics, di pah in the ASTM D2425 methods analyst diesel oil, the content of three rings and the above aromatic hydrocarbons of three rings; Adopt GB/T 380 methods to measure the sulphur content of diesel oil; Adopt GB/T 6536 methods to measure the boiling range of diesel oil, obtain final boiling point.Can also adopt any additive method well known by persons skilled in the art to measure above each parameter value.
Those skilled in the art are further appreciated that the sulphur content of concocted diesel oil, total aromaticity content and polycyclic aromatic hydrocarbon content can be respectively by the sulphur content of each diesel component, total aromaticity content and polycyclic aromatic hydrocarbon contents, and the ratio of each component directly calculates.The final boiling point T of concocted diesel oil of the present invention EPMaximum value in each diesel component final boiling point.
The method of concocted diesel oil provided by the invention can solve the oilness problem of the low fragrant diesel oil of low-sulfur.And only need just can determine suitable blending ratio by the seldom test of number of times (general 1～3 time).
In the present invention, the diesel component that uses for blending comprises at least a resistance to abrasion diesel component and the relatively poor diesel component of at least a resistance to abrasion preferably.Described resistance to abrasion diesel component preferably is meant that its resistance to abrasion is better than concocting the diesel component of back gained diesel oil, and the relatively poor diesel component of described resistance to abrasion is meant that its resistance to abrasion is inferior to the diesel component of blending back gained diesel oil.The described resistance to abrasion sulphur content of diesel component preferably is 100～5000 μ g/g, preferred 120～2000 μ g/g, most preferably 150～1000 μ g/g.Perhaps, described resistance to abrasion total aromaticity content of diesel component preferably is 5～50m%, preferred 10～40m%.The example of this component includes but not limited to conventional straight-run diesel oil, and prepares with hydrocracking refined method, but the hydrogenation degree of depth is more shallow, sulphur content and total higher diesel oil of aromaticity content.Quality in concocted diesel oil is 100%, and the described resistance to abrasion ratio of diesel component preferably is 5～95m%, preferred 15～90m%.The relatively poor diesel component of described resistance to abrasion includes but not limited to the diesel oil of middle pressure hydrocracking and medium-pressure hydrocracking desulfurizing and eliminating aromatic hydrocarbons deeply, hang down fragrant diesel oil with the Fisher-Tropsch method by super low-sulfurs of carbon source synthetic such as Sweet natural gas or coals, the sulphur content of such diesel oil can be low to moderate≤1 μ g/g, and total aromaticity content is low to moderate≤1m%.
The T of concocted diesel oil EP* ψ S* ψ PAValue can be 0.5 * 10 5～5.5 * 10 5, preferred 1.0 * 10 5～5.0 * 10 5, most preferably 2.0 * 10 5～5.0 * 10 5
In concocted diesel oil prepared in accordance with the present invention, can also add additive, for example, anti-wear agent, viscosity modifier, detergent-dispersant additive, fluidity improver (or pour point depressant), metal passivator, corrosion inhibitor, smoke suppressor and cetane number improver.The specific examples of additive has: polymethacrylate and polyalphaolefin pour point depressant, 2,6-ditertbutylparacresol oxidation inhibitor, N, N '-two salicylidene-1,2-propylene diamine metal passivator, dodecenylsuccinic acid rust-preventive agent and corrosion inhibitor, the fatty acid amine anti-wear agent, high-alkali sulfonated petro-leum smoke suppressor and cyclohexyl nitrate cetane number improver etc.
The inventive method has following advantage:
1) need not to add anti-wear agent just can make the low fragrant derv fuel oil of low-sulfur reach the requirement of II class oil to resistance to abrasion.
2) utilize high straight-run diesel oil of sulphur content and aromaticity content and cracked fuel oil to concoct the derv fuel oil that meets II class diesel oil standard, enlarged the output and the economic benefit of II class diesel oil.
3) utilize HFRR wear scar diameter calculation formula provided by the invention, can find suitable diesel component blending ratio very soon, method is simple.
The calculated value of table 1 explanation diesel oil HFRR wear scar diameter and the relation of measured value.Listed data show in this table, use HFRR wear scar diameter calculation formula provided by the present invention, can calculate the HFRR wear scar diameter of various diesel oil more exactly.10 kinds of listed diesel oil are low-sulfur diesel-oil, and sulphur content is less than 500 μ g/g (1-457 μ g/g), and polycyclic aromatic hydrocarbon content is less than 10m% (0.7-9.3m%).
The calculated value W of table 1 diesel oil HFRR wear scar diameter CalWith measured value W m
Further specify the present invention with embodiment below.
Embodiment 1～5 is the preparation method who meets the concocted diesel oil of II class diesel oil standard.
Embodiment 1
Choose two kinds of diesel components: the conventional straight-run diesel oil B that medium-pressure hydrocracking diesel component A that resistance to abrasion is relatively poor and resistance to abrasion are good, its chemical constitution is listed in table 2.Know after calculating according to the polycyclic aromatic hydrocarbon content of two kinds of diesel components that the content of B must be less than 30m%, otherwise the polycyclic aromatic hydrocarbon content of concocted diesel oil can exceed standard (＞5m%).The A that chooses the B of 20m% and 80m% concoct diesel oil C, measure 40 ℃ the kinematic viscosity of concocted diesel oil C, calculate its total aromaticity content, polycyclic aromatic hydrocarbon content, sulphur content and final boiling point.The HFRR wear scar diameter W that calculates by above-mentioned formula (1)～(5) is 380 μ m, be lower than 460 μ m, meet the requirement of II class diesel oil standard, all the other every indexs also all meet the standard of II class environmental protection diesel oil, and the proper mixture ratio example that can determine B and A thus is 20: 80.
The chemical constitution and the resistance to abrasion of the diesel oil after table 2 diesel component and the blending
Figure G06102380820060207D000071
Embodiment 2
Choose two kinds of diesel components: hydrogenated diesel oil D and 200～350 ℃ of conventional straight-run diesel oil B, its chemical constitution is listed in table 3.As can be known, the add-on of B must be less than 40m% after calculating according to the sulphur content of diesel component D and B, the sulphur content of E just can not exceed standard (＞300 μ g/g).Select B with 35m% to mix and obtain concocted diesel oil E with the D of 65m%, calculate the wear scar diameter W=422 μ m (computation process is with embodiment 1) of concocted diesel oil E, and every index all meets the requirement of II class diesel oil, thereby the blending ratio of determining two kinds of diesel oil distillates is 35: 65.
Chemical constitution and the resistance to abrasion of table 3 diesel component B, D and concocted diesel oil E
Figure G06102380820060207D000072
Embodiment 3
Choose F and two kinds of hydrogenated diesel oil components of G (table 4).Know after calculating according to total aromaticity content of two kinds of diesel components that the consumption of G must be below 70%, otherwise total aromaticity content exceeds standard.Select to mix with the F of 50 m% with the G of 50m%, obtain concocted diesel oil H, calculate W=433 μ m (computation process is with embodiment 1), every index meets II class diesel oil standard, and the suitable blending ratio that can determine F and G thus is 50: 50.
Chemical constitution and the resistance to abrasion of table 4 diesel component F, G and blended product diesel oil H
Figure G06102380820060207D000081
Embodiment 4
Choosing by the Fisher-Tropsch process is raw material synthetic diesel component I by Sweet natural gas, and hydrogenated diesel oil J and three kinds of diesel components of conventional straight-run diesel oil B obtain qualified diesel oil K (table 5) in the hope of blending.Know after calculating according to the polycyclic aromatic hydrocarbon content of each diesel component, the content of diesel component B can not surpass 30m%, otherwise the polycyclic aromatic hydrocarbon content of concocted diesel oil can exceed standard, but the resistance to abrasion of B is best in three kinds of diesel components, and the add-on of B is very few can to make resistance to abrasion descend again and defective.Select to adopt the B concocted diesel oil of 30m%, then I+K should account for 70m%, but the consumption of component J should be less than 35 m%, otherwise the polycyclic aromatic hydrocarbon content of tempered oil will exceed standard, select to adopt 40m%I, 30m%J and 30m%B blending, obtain qualified diesel oil K (each calculation method of parameters is with embodiment 1), thereby determine that three's ratio of mixture is 40: 30: 30.
Chemical constitution and the resistance to abrasion of table 5 diesel component I, J, B and blended product diesel oil K
Figure G06102380820060207D000082
Embodiment 5
Choose straight-run diesel oil L and hydrogenated diesel oil M, meet the diesel oil of II class standard in order to blending.Observe table 6, the viscosity of these two kinds of components, total aromaticity content, polycyclic aromatic hydrocarbon content and sulphur content all meets or near the standard of II class diesel oil, therefore, may have the blending ratio scope of a broad, the diesel oil of concocting out all conforms with standard.The resistance to abrasion of L is better than M, but knows that the highest consumption of L is 90m% after calculating according to the sulphur content of two kinds of diesel components, otherwise the concocted diesel oil sulphur content can exceed standard.By the select progressively blending ratio that progressively reduces L content, obtain concocted diesel oil N (90m%L+10m%M) and diesel oil O (50m%L+50m%M), and calculate the HFRR wear scar diameter with method described in the embodiment 1 respectively.The calculated value 344 μ m conformance with standard of the HFRR wear scar diameter of concocted diesel oil N.Concocted diesel oil O, promptly when the content of L dropped to 50m%, wear scar diameter exceeded standard (468 μ m), therefore, chose L with 60m% again and mixed with the M of 40m% and obtain diesel oil P, and calculating the HFRR wear scar diameter is 420 μ m, meets the requirement of II class diesel oil.The proper range that can determine the blending ratio of L and M thus is 90: 10～60: 40 (table 6).
Chemical constitution and the resistance to abrasion of table 6 diesel component I, M and blended product diesel oil O, P
Figure G06102380820060207D000091

Claims (10)

1. the method for a concocted diesel oil comprises the steps:
1) chooses two or more different diesel component;
2) select certain proportion that each diesel component is mixed, obtain concocted diesel oil, measure the kinematic viscosity of 40 ℃ of this concocted diesel oils, measure or calculate the sulphur content of concocted diesel oil, total aromaticity content, polycyclic aromatic hydrocarbon content and final boiling point;
3) calculate the HFRR wear scar diameter with following formula:
W AR＝(-3.68η 40℃+11.36)·ψ AR
Wherein, W ARGetting this value during for negative value is zero (1)
W AK＝[4.6η 40℃/(0.95η 40℃-0.4)]·(100-ψ AR)(2)
Φ 1＝0.5[η 40℃+(η 40℃ 2+1) 0.5]·η 40℃ -1-0.1(3)
Φ 2＝0.5lg(ψ s·ψ PA)-0.3
Wherein, work as T EP* ψ S* ψ PA＜10 5The time, Φ 2Get 1 (4)
In the formula,
η 40 ℃Be the kinematic viscosity of 40 ℃ of concocted diesel oils, the mm of unit 2/ s;
ψ ARBe the mass percent of total aromatic hydrocarbons in the concocted diesel oil, the % of unit;
ψ sBe the sulphur content in the concocted diesel oil, the μ g/g of unit;
ψ PABe the mass percent of the polycyclic aromatic hydrocarbons in the concocted diesel oil, the % of unit;
T EPBe the final boiling point of concocted diesel oil. unit ℃;
W ARFor total aromatic hydrocarbons in the concocted diesel oil to the contribution of wear scar diameter, the μ m of unit;
W AKBe the contribution of alkane in the concocted diesel oil, the μ m of unit to wear scar diameter;
Φ 1And Φ 2Correction coefficient for wearing and tearing;
With the above following formula of substitution as a result, calculate corresponding concocted diesel oil HFRR wear scar diameter calculated value:
W＝W AR+W AK·Φ 1·Φ 2 -1 (5)
4) if the calculating HFRR wear scar diameter of concocted diesel oil in pre-determined range, then this concocted diesel oil is required diesel oil; If the calculating HFRR wear scar diameter of concocted diesel oil is not in pre-determined range, repeating step (2)～(4) then are in the pre-determined range until the wear scar diameter of concocted diesel oil.
2. according to the method for the concocted diesel oil of claim 1, it is characterized in that, in step 2) in select before the certain proportion, earlier according to one or the multinomial proportional range of determining each diesel component among the sulphur content of each component, total aromaticity content, polycyclic aromatic hydrocarbon content and the final boiling point.
3. according to the method for the concocted diesel oil of claim 1 or 2, it is characterized in that concocted diesel oil meets the following conditions: 40 ℃ kinematic viscosity 2.0mm 2/ s≤η 40 ℃≤ 4.0mm 2/ s, total aromaticity content ψ AR≤ 25m%, polycyclic aromatic hydrocarbon content ψ PA≤ 5m%, sulphur content ψ s≤ 300 μ g/g, final boiling point T EP≤ 365 ℃, and HFRR wear scar diameter W≤460 μ m.
4. according to the method for the concocted diesel oil of claim 3, it is characterized in that selected diesel component comprises at least a resistance to abrasion diesel component and the relatively poor diesel component of at least a resistance to abrasion preferably.
5. according to the method for the concocted diesel oil of claim 4, it is characterized in that the described resistance to abrasion sulphur content of diesel component preferably is 100～5000 μ g/g.
6. according to the method for the concocted diesel oil of claim 4, it is characterized in that described resistance to abrasion total aromaticity content of diesel component preferably is 5～50m%.
7. according to the method for the concocted diesel oil of claim 4, it is characterized in that described resistance to abrasion diesel component preferably is conventional straight-run diesel oil, perhaps with hydrocracking refined method preparation, but the hydrogenation degree of depth is more shallow, sulphur content and the total higher diesel oil of aromaticity content.
8. according to the method for the concocted diesel oil of claim 4, it is characterized in that, the relatively poor diesel component of described resistance to abrasion is the diesel oil of middle pressure hydrocracking or medium-pressure hydrocracking desulfurizing and eliminating aromatic hydrocarbons deeply, perhaps hangs down fragrant diesel oil with the Fisher-Tropsch method by Sweet natural gas or the super low-sulfur of coal synthetic.
9. according to the method for the concocted diesel oil of claim 3, it is characterized in that described method also is included in to add in the concocted diesel oil and is selected from one or more following additives: anti-wear agent, viscosity modifier, detergent-dispersant additive, fluidity improver, pour point depressant, metal passivator, corrosion inhibitor, smoke suppressor and cetane number improver.
10. a method of calculating diesel oil HFRR wear scar diameter comprises the steps:
1) measures the kinematic viscosity of 40 ℃ of diesel oil, measure or calculate the sulphur content of diesel oil, total aromaticity content, polycyclic aromatic hydrocarbon content and final boiling point;
2) calculate the HFRR wear scar diameter with following formula:
W AR＝(-3.68η 40℃+11.36)·ψ AR
Wherein, W ARGetting this value during for negative value is zero (1)
W AK＝[4.6η 40℃/(0.95η 40℃-0.4)]·(100-ψ AR) (2)
Φ 1＝0.5[η 40℃+(η 40℃ 2+1) 0.5]·η 40℃ -1-0.1 (3)
Φ 2＝0.5lg(ψ s·ψ PA)-0.3
Wherein, work as T EP* ψ S* ψ PA＜10 5The time, Φ 2Get 1 (4)
In the formula,
η 40 ℃Be the kinematic viscosity of 40 ℃ of diesel oil, the mm of unit 2/ s;
ψ ARBe the mass percent of total aromatic hydrocarbons in the diesel oil, the % of unit;
ψ sBe the sulphur content in the diesel oil, the μ g/g of unit;
ψ PABe the mass percent of the polycyclic aromatic hydrocarbons in the diesel oil, the % of unit;
T EPBe diesel-fuel end point, unit ℃;
W ARFor total aromatic hydrocarbons in the diesel oil to the contribution of wear scar diameter, the μ m of unit;
W AKBe the contribution of alkane in the diesel oil, the μ m of unit to wear scar diameter;
Φ 1And Φ 2Correction coefficient for wearing and tearing;
With the above following formula of substitution as a result, calculate the calculating HFRR wear scar diameter of corresponding diesel oil,
W＝W AR+W AK·Φ 1·Φ 2 -1 (5)。
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EP1619232A1 (en) * 2003-03-07 2006-01-25 Nippon Oil Corporation Gas oil composition and process for producing the same

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