WO2001044411A2 - Composition de carburant - Google Patents

Composition de carburant Download PDF

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Publication number
WO2001044411A2
WO2001044411A2 PCT/EP2000/012756 EP0012756W WO0144411A2 WO 2001044411 A2 WO2001044411 A2 WO 2001044411A2 EP 0012756 W EP0012756 W EP 0012756W WO 0144411 A2 WO0144411 A2 WO 0144411A2
Authority
WO
WIPO (PCT)
Prior art keywords
viscosity
composition
component
fuel
fuel composition
Prior art date
Application number
PCT/EP2000/012756
Other languages
English (en)
Other versions
WO2001044411A3 (fr
Inventor
Robert Howie Barbour
Paul J. Berlowitz
David John Rickeard
Alan Mark Schilowitz
Original Assignee
Exxonmobil Research And Engineering Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Exxonmobil Research And Engineering Company filed Critical Exxonmobil Research And Engineering Company
Priority to CA002393280A priority Critical patent/CA2393280A1/fr
Priority to JP2001545491A priority patent/JP2003517090A/ja
Priority to EP00990759A priority patent/EP1246893A2/fr
Publication of WO2001044411A2 publication Critical patent/WO2001044411A2/fr
Publication of WO2001044411A3 publication Critical patent/WO2001044411A3/fr

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10L—FUELS NOT OTHERWISE PROVIDED FOR; NATURAL GAS; SYNTHETIC NATURAL GAS OBTAINED BY PROCESSES NOT COVERED BY SUBCLASSES C10G, C10K; LIQUEFIED PETROLEUM GAS; ADDING MATERIALS TO FUELS OR FIRES TO REDUCE SMOKE OR UNDESIRABLE DEPOSITS OR TO FACILITATE SOOT REMOVAL; FIRELIGHTERS
    • C10L1/00—Liquid carbonaceous fuels
    • C10L1/04—Liquid carbonaceous fuels essentially based on blends of hydrocarbons
    • C10L1/08—Liquid carbonaceous fuels essentially based on blends of hydrocarbons for compression ignition

Definitions

  • This invention relates to fuel compositions of low sulphur content and high viscosity which have improved lub ⁇ city performance and thus a reduced dependency on lub ⁇ city additive
  • compositions which are low m sulphur content but are also of the desired lub ⁇ city in order to minimise wear and friction when used m automotive engines and to minimise the damage to the injection system of a diesel engine
  • anti-wear agents to such formulations including fatty acid, fatty acid esters, lactones, polyoxyalkylene ethers, ammo compounds and the like for this purpose
  • compositions containing compounds such as esters are expensive in terms of both mate ⁇ al costs and the cost of additive storage facilities
  • a publication by Wei and Spikes entitled "The lubricity of diesel fuels" in Wear, 111, (1986), page 217 discloses that heterocyclic nitrogen compounds, like quinoline and indole, also have a beneficial effect on the antiwear performance of base fuels. These compounds were investigated because they fall within the same general structure as the natural compounds that are destroyed during hydrotreatment.
  • JP-A-1 10001692 a specific mixture of C 8 -C 3 o fatty acid esters are used to improve the lubricity of low sulphur ( ⁇ 0.2 wt%) middle distillate fuel oils having an aromatic content of ⁇ 40 wt% suitable for use as diesel fuels. There is no mention of the viscosity of the final fuel oil.
  • the lubricity enhancing component generally has to be synthesised separately and introduced into the fuel from an external additive. This is not only wasteful of resources but also causes proliferation of chemicals into this industry. Moreover, extensive testing is needed to ensure that such externally sourced additives do not have any undesirable side-effects.
  • Prior published RU-A-2079542 relates to a highly viscous fuel for ship's diesel engines comprising a narrow fraction from the atmospheric distillation of oil (b.p. range 350-500°C) and a depressor additive in the form of a thermal cracking residue (density 1040-1095 kg/m 3 ).
  • a depressor additive in the form of a thermal cracking residue (density 1040-1095 kg/m 3 ).
  • density 1040-1095 kg/m 3 thermal cracking residue
  • the present invention therefore provides diesel fuel compositions having enhanced lubricity, said compositions having a sulphur content of ⁇ 25ppm and an aromatic content of not less than about 12%, characterised in that the kinematic viscosity measured at 40°C (KV o) of the fuel composition is greater than 3.0 cSt.
  • Such fuel compositions can be prepared by blending at least two components one of which has a relatively higher viscosity than the final fuel composition and the other of which has a lower viscosity than the final fuel composition.
  • the relative ratios by volume of the relatively higher viscosity component to the relatively lower viscosity component may vary over a very wide range depending the viscosity of each and the amount blended such as eg from 10:90 to 80:20 respectively.
  • Such a volume ratio would suitably be in the range from 70:30 to 80:20 respectively.
  • a conventional hydrotreated fuel can be used as the relatively higher viscosity component which can be obtained either from a pipestill (eg heavy gas oil) of a refining process, or, from secondary processing of a refinery product stream such as eg hydrocracking (ie hydrocrakate).
  • a pipestill eg heavy gas oil
  • a refinery product stream such as eg hydrocracking (ie hydrocrakate).
  • Such components may have been severely hydrotreated to reduce the sulphur content thereof but will still retain the aromatics content therein.
  • aromatic content may typically be in the range of 12 to 35%.
  • the fuel composition of the present invention can be prepared by blending a relatively higher viscosity refinery stream (which may in itself be a blend) obtained from a hydrocracker with a typical viscosity automotive diesel oil (ADO) or even a low viscosity component like kerosene. By blending these components in appropriate proportions, a fuel composition can be formulated which has a KV 0 viscosity of more than 3.0 cSt.
  • ADO typical viscosity automotive diesel oil
  • a hydrocracked component with a KV 40 of 6.7 cSt can be blended with a lower viscosity component with a KV 40 of 1.1 cSt in a volume ratio of 74:26 respectively to give a blend with a KV 40 of 3.6 cSt.
  • ULSADO ultra-low sulphur automotive diesel oil
  • the resultant blend would have a viscosity of 3.0 cSt.
  • the fuel compositions of the present invention provide an acceptable lubricity performance when used in diesel injection equipment that is less susceptible to wear problems.
  • relatively more susceptible rotary distribution systems such as eg pumps, which are solely lubricated by the fuel itself the enhanced lubricity performance will enable a reduction in the conventional additive treat rate required for acceptable performance.
  • These pumps contain precisely engineered components to maintain the consistency and precision of the injected fuel volume and to ensure a long service life. If the pump components become worn, irregular fuel injection may occur thereby leading to poor drivability, and increased emissions and may eventually lead to pump seizure.
  • the diesel fuel composition has a sulphur content of less than 25 ppm, suitably less than 10 ppm and is preferably a zero sulphur fuel.
  • the low sulphur levels can be achieved in a number of ways. For instance, this may be achieved by well known methods such as catalytic hydrodesulphurisation.
  • the fuel composition has a KV 40 for >3.0 cSt, preferably >3.5 cSt.
  • the base fuels of the present invention may comprise mixtures of saturated, olefinic and aromatic hydrocarbons and these can be derived from straight run streams, thermally or catalytically cracked hydrocarbon feedstocks, hydrocracked petroleum fractions, catalytically reformed hydrocarbons, or synthetically produced hydrocarbon mixtures.
  • the present invention is particularly applicable to fuels with less than 25 ppm sulphur where the natural lubricity polar compounds have been reduced during processing to an ineffective level.
  • Fuel compositions of the present invention will contain more than normal levels of the higher viscosity components from the pipestill or from secondary processing such as hydrocracking.
  • Methods of processing petroleum crude to obtain various process streams are well known in the art and are described in detail for instance by Keith Owen and Trevor Colley in "Automotive Fuels Reference Book", Second Edition, published by the Society of Automotive Engineers, Inc, Warrendale, PA, USA (1995).
  • the specimen ball was of a grade 28 (ANSIB3.12), AISI E-52100 steel with a Rockwell hardness "C” scale (HRC) number of 58-66 (ISO 6508) having a surface finish of less than 0.05 ⁇ m R a and the lower plate was of AISI E-52000 steel machined from an anealed rod, with a Vickers hardness "HV30" scale number of 190-210 (ISO 6507/1). It is turned, lapped and polished to a surface finish of 0.02 ⁇ m R a .
  • HRC Rockwell hardness "C” scale
  • Blends 1 to 3 are compared with Blends 4 and 5 (comparative tests not according to the invention) having a KV 4 n below 3.0 cSt.
  • Table 4 shows the HFRR results for the base blends with no additives and for low and high viscosity blends treated with ester lubricity additive. TABLE 4 HFRR Lubricity performance of test blends

Landscapes

  • Chemical & Material Sciences (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Liquid Carbonaceous Fuels (AREA)
  • Lubricants (AREA)

Abstract

L"invention concerne une composition de carburant diesel possédant un meilleur pouvoir lubrifiant. La composition comprend une teneur en soufre < 25 mg/l et une teneur en aromatiques supérieure ou égale à 12 %, et est caractérisée en ce que la viscosité cinématique mesurée à 40 °C (KV40) de la composition de carburant est supérieure à 3,0 cSt. Ces compositions possèdent le pouvoir lubrifiant voulu sans avoir à utiliser les additifs améliorant le pouvoir lubrifiant traditionnels, ou en les utilisant en quantités relativement faibles.
PCT/EP2000/012756 1999-12-16 2000-12-14 Composition de carburant WO2001044411A2 (fr)

Priority Applications (3)

Application Number Priority Date Filing Date Title
CA002393280A CA2393280A1 (fr) 1999-12-16 2000-12-14 Composition de carburant
JP2001545491A JP2003517090A (ja) 1999-12-16 2000-12-14 燃料組成物
EP00990759A EP1246893A2 (fr) 1999-12-16 2000-12-14 Composition de carburant

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB9929805.1 1999-12-16
GB9929805A GB2357297A (en) 1999-12-16 1999-12-16 Diesel fuel composition

Publications (2)

Publication Number Publication Date
WO2001044411A2 true WO2001044411A2 (fr) 2001-06-21
WO2001044411A3 WO2001044411A3 (fr) 2001-12-13

Family

ID=10866478

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/012756 WO2001044411A2 (fr) 1999-12-16 2000-12-14 Composition de carburant

Country Status (5)

Country Link
EP (1) EP1246893A2 (fr)
JP (1) JP2003517090A (fr)
CA (1) CA2393280A1 (fr)
GB (1) GB2357297A (fr)
WO (1) WO2001044411A2 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180320602A1 (en) * 2015-11-12 2018-11-08 Denso Corporation Lubricity estimation device and fuel supply control device
EP3187569B1 (fr) * 2015-12-29 2019-07-03 Neste Oyj Composition de carburant diesel renouvelable

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1438374A2 (fr) * 2001-10-25 2004-07-21 BP Corporation North America Inc. Composants utilises comme additifs de carburants de transport

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994020593A1 (fr) * 1993-03-05 1994-09-15 Mobil Oil Corporation Carburant diesel a faibles emissions polluantes
WO1999057232A1 (fr) * 1998-05-07 1999-11-11 Exxon Research And Engineering Company Procede relatif a la production de mazouts legers a faible teneur en soufre et a pouvoir lubrifiant eleve
US6150575A (en) * 1998-11-12 2000-11-21 Mobil Oil Corporation Diesel fuel

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2079542C1 (ru) * 1995-06-13 1997-05-20 Уфимский государственный нефтяной технический университет Судовое высоковязкое топливо для среднеоборотных и малооборотных судовых дизелей (варианты)
JP3968820B2 (ja) * 1997-06-13 2007-08-29 日本油脂株式会社 燃料油組成物

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1994020593A1 (fr) * 1993-03-05 1994-09-15 Mobil Oil Corporation Carburant diesel a faibles emissions polluantes
WO1999057232A1 (fr) * 1998-05-07 1999-11-11 Exxon Research And Engineering Company Procede relatif a la production de mazouts legers a faible teneur en soufre et a pouvoir lubrifiant eleve
US6150575A (en) * 1998-11-12 2000-11-21 Mobil Oil Corporation Diesel fuel

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180320602A1 (en) * 2015-11-12 2018-11-08 Denso Corporation Lubricity estimation device and fuel supply control device
US10760502B2 (en) * 2015-11-12 2020-09-01 Denso Corporation Lubricity estimation device and fuel supply control device
EP3187569B1 (fr) * 2015-12-29 2019-07-03 Neste Oyj Composition de carburant diesel renouvelable

Also Published As

Publication number Publication date
EP1246893A2 (fr) 2002-10-09
WO2001044411A3 (fr) 2001-12-13
GB9929805D0 (en) 2000-02-09
CA2393280A1 (fr) 2001-06-21
GB2357297A (en) 2001-06-20
JP2003517090A (ja) 2003-05-20

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