CN1298818C - Diesel fuel additive and its uses - Google Patents

Diesel fuel additive and its uses Download PDF

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Publication number
CN1298818C
CN1298818C CNB2005100485516A CN200510048551A CN1298818C CN 1298818 C CN1298818 C CN 1298818C CN B2005100485516 A CNB2005100485516 A CN B2005100485516A CN 200510048551 A CN200510048551 A CN 200510048551A CN 1298818 C CN1298818 C CN 1298818C
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China
Prior art keywords
diesel
weight
component
additive
dope
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Expired - Fee Related
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CNB2005100485516A
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CN1766066A (en
Inventor
陈卫红
王秀珍
张凡
李朝恒
裴旭东
程国良
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Sinopec Luoyang Guangzhou Engineering Co Ltd
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Sinopec Luoyang Petrochemical Engineering Corp
China Petrochemical Corp
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Abstract

The present invention discloses a diesel fuel additive and the application thereof. The additive of the present invention is composed of 70 to 80 wt. % of a nitric acid ester class, 0 to 10 wt. % of detergent, 5 to 15 wt. % of dispersant and 0 to 5 wt. % of earth metal naphthenate. The additive of the present invention can solve the problem of single function of the diesel fuel additive in the prior art, and thus, the additive can effectively reduce the dirty discharge of the diesel fuel and improve the combustion performance of fuel oil when the cetane number of the diesel fuel is improved.

Description

A kind of diesel-dope and application thereof
Technical field
The present invention relates to a kind of fuel dope, particularly a kind of diesel-dope and application thereof that improves diesel cetane-number and reduce the contaminated by diesel oil discharging.
Background technology
Strict day by day along with environmental regulation requires to improve constantly to the quality index of diesel oil, diesel-fuel cetane number especially, and the height of cetane value directly influences the disposal of pollutants and the fuel economy of diesel oil.But along with the continuous exploitation of crude oil, the performance of crude oils variation, heavy crude and sulphur-bearing crude amount of finish constantly increase, by existing complete processing, diesel-fuel cetane number is difficult to the requirement that touches the mark, and therefore develops cost-effective diesel cetane-number additive, and is very necessary.
Temperature when ignition dope can reduce the diesel oil initial burning, the reaction range in expansion leading edge stage is improved flammability.The ignition dope of China's research and development mainly contains the isooctyl ester nitrate (2-EHN) of Qilu Petrochemical and Xi'an Inst. of Modern Chemistry's research 80~nineties of last century report, and domestic each refinery also just adds the 2-EHN one-component when needs improve diesel cetane-number.Foreign patent about the diesel-dope aspect mainly contains US4632674, US4943303 and US5454842, wherein the disclosed additive main component of US4632674 is nitrogenous heterogeneous ring compound, the disclosed additive of US4943303 mainly is carbonyl compound and some alkyl nitric ethers of some sulfur-bearings, disclosed additive is the mixture of the long chain fatty acid ester, long chain fatty acid ester and the vegetable seed wet goods that contain nitric acid treatment in the US5454842 patent, more than these foreign patents all be improving diesel cetane-number, but additive effect is not obvious.Chinese patent about the diesel-dope aspect also has much, is mainly concerned with fuel-economizing, falls dirt, improves and lubricate, reduce wear and reduce aspect such as diesel engine vent gas smoke emission.CN1335375A relates to a kind of additive that contains less than 10% isooctyl ester nitrate, is mainly used in to improve to lubricate, reduce wear and reduce the diesel engine vent gas smoke emission.Host composition isooctyl ester nitrate, transition metal naphthenate, acetic ester, amine and the alkaline earth metal sulfonate that improves diesel cetane-number arranged in composite dose that CN 1123828A proposes, but diesel-fuel cetane number also only improves 3 units after using this composite dose.
In May, 2003 General Administration of Quality Supervision, Inspection and Quarantine o of the People's Republic of China's issue derv fuel oil State Standard of the People's Republic of China GB/T 19147-2003.The maximum differential of new standard and current standards GB252-2000 is that No. 10, No. 5, No. 0 ,-No. 10 diesel cetane-numbers are brought up to 49 by 45.Oil variety and processing means from present domestic refinery processing make diesel-fuel cetane number reach standard-required, face big difficulty.
Summary of the invention
The present invention be directed to the shortcoming of diesel-dope function singleness in the prior art, a kind of diesel oil multifunction additive is provided, this additive can effectively reduce the contaminated by diesel oil discharging and improve the oil inflame performance when improve diesel cetane-number.
The present invention also provides a kind of application of described diesel-dope in addition.
Diesel-dope provided by the invention, form by following component:
A) nitrate esters: 70~80 weight %;
B) purification agent: 0~10 weight %;
C) dispersion agent: 5~15 weight %;
D) rare earth metal naphthenate: 0~5 weight %.
Wherein said component is C a) 4~C 15The alkyl nitric ether, preferred C 6~C 10The alkyl nitric ether, preferably amyl nitrate or isooctyl ester nitrate.The main effect of this alkyl nitric ether is that free radical is provided in diesel combustion process, improves chain initiation speed, improves diesel-fuel cetane number then.
Described components b) shared weight percentage is preferably 5~10 weight % in additive.Components b) is sulfonated petro-leum or synthesising sulfonate, the synthetic sulfonic acid magnesium of preferred high alkalinity calcium mahogany sulfonate or high alkalinity.Wherein the high alkalinity calcium mahogany sulfonate refers to that calcium content is the calcium mahogany sulfonate of 7~10 weight %, and the synthetic sulfonic acid magnesium of high alkalinity refers to that base number is the synthetic sulfonic acid magnesium of 300~400mgKOH/g.During high alkalinity sulfonated petro-leum purification agent has well and performance, can solve the etching problem of motor bearing.
Described amount of component b) is the organic amine ashless dispersant, is preferably succimide or benzylamine.This component low temperature dispersity can be good.
Described component d) is cerium naphthenate or lanthanum naphthenate.
Additive preparation process of the present invention is with components b), amount of component b) and component d) by its weight ratio join component a) in, stir a little and get final product uniform mixing.Between each component, equal react with not between each component and the host, chemistry, physical properties are stable, and it is convenient to store.
Application of Additives of the present invention is that the additive with 0.1~0.2 weight % adds in the diesel oil, places a moment or stir a little to get final product, and described percentage composition is in the diesel oil gross weight.
It is straight-run diesel oil, combined diesel oil, biofuel, secondary processing diesel oil or the finished diesel fuel after blending that additive of the present invention is suitable for diesel oil, and wherein secondary processing diesel oil comprises hydrofining diesel oil, catalytic cracking diesel oil or coker gas oil.
In the additive of the present invention, during the composite use of amine preferably of high alkalinity sulfonated petro-leum purification agent and low temperature dispersity, not only have good solution motor bearing etching problem in and performance, can also promote the dispersing property of diesel oil, compare with the single isooctyl ester nitrate of use in the prior art, under same addition, use additive of the present invention can make diesel-fuel cetane number improve 3~7 units, improve 2~3 units than using single isooctyl ester nitrate in the prior art more, and harmful gas emission and particulate matter reduction are also big than prior art behind the diesel combustion, harmful gas emission reduced 30~80% after additive of the present invention can make diesel combustion, and particulate matter reduces about 40%.
Embodiment:
For further specifying the present invention, provide embodiments of the invention below.But embodiment does not limit this
Scope of invention.
Embodiment 1
Nitric acid ten diester 80 weight %, succimide 15 weight %, cerium naphthenate 5 weight %.Preparation method is that succimide and cerium naphthenate are directly joined in the isooctyl ester nitrate, need not heating, stirs a little and gets final product uniform mixing, makes additive a.
Embodiment 2
Amyl nitrate 80 weight %, high alkalinity is synthesized sulfonic acid magnesium (base number is 325mgKOH/g) 10 weight %, benzylamine 10 weight %, the preparation method makes additive b with embodiment 1.
Embodiment 3
Nitric acid hexadecyl ester 75 weight %, high alkalinity calcium mahogany sulfonate (calcium content is 9 weight %) 7 weight %, benzylamine 13 weight %, lanthanum naphthenate 5 weight %, the preparation method makes additive c with embodiment 1.
Embodiment 4
Add additive and the comparative additive 2-EHN of embodiment 1~3 among the diesel oil I (blank diesel cetane-number is 43.7) respectively by 0.15% (weight).Effect is as shown in table 2.The physicochemical property of diesel oil I is as shown in table 1.
Embodiment 5
Consist of isooctyl ester nitrate 70 weight %, high alkalinity is synthesized sulfonic acid magnesium (base number is 350mgKOH/g) 10 weight %, succimide 15 weight %, and cerium naphthenate 5 weight %, the preparation method makes additive d with embodiment 1.
Embodiment 6
Additive d and comparative additive 2-EHN that embodiment 5 is made add (blank diesel cetane-number is 39.8) among the diesel oil II to by 0.2% (weight), and effect is as shown in table 3.The physicochemical property of diesel oil II is as shown in table 1.
The physicochemical property of table 1 diesel oil
Analysis project Diesel oil I Diesel oil II
Color, the look oxidation stability, total insoluble substance mg/100ml sulphur content, weight % mercaptan sulfur content, weight % moisture, volume % acidity, mgKOH/100mL 10% steams excess carbon residue, weight % ash content, (50 ℃ of weight % copper corrosions, 3h), grade water-soluble acid or alkali mechanical impurity kinematic viscosity (20 ℃), mm 2/ s flash-point (agar diffusion method of remaining silent), ℃ cetane value boiling range 50% recovered temperature, ℃ 90% recovered temperature, ℃ 95% recovered temperature, ℃ density (20 ℃), kg/m 3 Do not have 4.165 67 43.7 275.70 343.80 358.10 843.0 3.5 0.285 0.0004 has 1.18 0.088 1a Do not have 4.945 79 39.8 284.50 347.70 361.30 851.0 3.5 3.7 0.266 0.0005 have 1.17 0.13 0.001 1a
Table 2 embodiment 4 obtains result's contrast
Additive The CN increasing amount HC reduces % CO reduces % Particulate matter reduces %
a 5.6 15 32 10
b 6.5 20 35 16
c 7.2 25 45 40
2-EHN 4.3 9 15 5
Annotate: CN is a diesel cetane-number, and 2-EHN is an isooctyl ester nitrate, and HC is a hydrocarbon polymer, and CO is a carbon monoxide.
Table 3 embodiment 6 obtains result's contrast
Additive The CN increasing amount HC reduces % CO reduces % Particulate matter reduces %
d 6.8 26 46 39
2-EHN 3.9 8 13 6
Annotate: CN is a diesel cetane-number, and 2-EHN is an isooctyl ester nitrate, and HC is a hydrocarbon polymer, and CO is a carbon monoxide.

Claims (8)

1. diesel-dope is characterized in that: be made up of following component:
A) nitrate esters: 70~80 weight %
B) purification agent: 0~10 weight %
C) dispersion agent: 5~15 weight %
D) rare earth metal naphthenate: 0~5 weight %
Wherein said component is C a) 4~C 15The alkyl nitric ether, components b) be sulfonated petro-leum or synthesising sulfonate, amount of component b) be the organic amine ashless dispersant, component d) be cerium naphthenate or lanthanum naphthenate.
2. diesel-dope according to claim 1 is characterized in that: described component a) is the alkyl nitric ether of C6~C10.
3. diesel-dope according to claim 2 is characterized in that: described component is amyl nitrate or isooctyl ester nitrate a).
4. diesel-dope according to claim 1 is characterized in that: 5~10 weight % that described components b) account for the diesel-dope gross weight.
5. diesel-dope according to claim 1 is characterized in that: described components b) be the calcium mahogany sulfonate of calcium content 7~10 weight %.
6. diesel-dope according to claim 1 is characterized in that: described components b) be that base number is the synthetic sulfonic acid magnesium of 300~400mgKOH/g.
7. diesel-dope according to claim 1 is characterized in that: described amount of component b) be succimide or benzylamine.
8. the described Application of Additives of claim 1 is characterized in that: the additive of 0.1~0.2 weight % is added in the diesel oil, place a moment or stir a little and get final product, described percentage composition is in the diesel oil gross weight.
CNB2005100485516A 2005-11-16 2005-11-16 Diesel fuel additive and its uses Expired - Fee Related CN1298818C (en)

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CN1298818C true CN1298818C (en) 2007-02-07

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Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101665731B (en) * 2009-09-24 2012-12-05 济南开发区星火科学技术研究院 Composition of diesel cetane-number improver
CN101787092B (en) * 2010-02-10 2011-08-03 莱芜钢铁集团有限公司 Amido polyving akohol poly-nitricether as improver of cetane number of diesel oil
CN102766486B (en) * 2012-08-02 2014-07-16 赵越英 Production method of efficient diesel
CN103113941B (en) * 2013-02-26 2015-04-01 宁夏易星能源科技开发有限公司 Additive for production of diesel from condensate oil and preparation method thereof
CN103146422B (en) * 2013-02-26 2015-02-18 宁夏易星能源科技开发有限公司 Method for producing common diesel mainly from condensate oil
CN104403708B (en) * 2014-10-01 2015-12-09 无棣华信石油技术服务有限公司 Oil product purification agent and preparation method thereof
CN104910974B (en) * 2015-05-29 2017-02-01 广州精至百特利化工科技有限公司 Diesel efficiency-enhancement emission-reduction additive
CN107083263A (en) * 2017-04-28 2017-08-22 马健 Diesel cetane-number improver
CN106978224A (en) * 2017-06-08 2017-07-25 西安万德能源化学股份有限公司 Composite diesel energy-conservation detersive and preparation method thereof
CN107384492A (en) * 2017-08-25 2017-11-24 青岛涌泉石油有限公司 Anti- haze environmental protection diesel oil combustion improver
CN110205170A (en) * 2019-06-19 2019-09-06 高锦杰 A kind of biodiesel blend fuels and preparation method thereof
CN111575067A (en) * 2020-05-19 2020-08-25 张晋忠 Energy-saving clean environment-friendly fuel oil and preparation method thereof

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943303A (en) * 1985-11-25 1990-07-24 The Lubrizol Corporation Cetane improver
US5454842A (en) * 1994-12-02 1995-10-03 Exxon Research & Engineering Co. Cetane improver compositions comprising nitrated fatty acid derivatives
CN1123828A (en) * 1994-11-23 1996-06-05 中国科学院大连化学物理研究所 Additive for catalyzing combustion of diesel oil
CN1335375A (en) * 2000-07-25 2002-02-13 上海灏光实业有限公司 Diesel oil additive

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4943303A (en) * 1985-11-25 1990-07-24 The Lubrizol Corporation Cetane improver
CN1123828A (en) * 1994-11-23 1996-06-05 中国科学院大连化学物理研究所 Additive for catalyzing combustion of diesel oil
US5454842A (en) * 1994-12-02 1995-10-03 Exxon Research & Engineering Co. Cetane improver compositions comprising nitrated fatty acid derivatives
CN1335375A (en) * 2000-07-25 2002-02-13 上海灏光实业有限公司 Diesel oil additive

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Address after: 100029 Beijing City, Chaoyang District Hui Street No. 6

Co-patentee after: Luoyang Petrochemical Engineering Corporation /SINOPEC

Patentee after: China Petrochemical Group Corp.

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