High power fuel compositions

a fuel composition and high-power technology, applied in the petroleum industry, liquid carbonaceous fuels, fuel additives, etc., can solve the problems of increasing smoke emissions, limiting the amount of blended fuel, and the density of the fuel, so as to increase the power performance, increase the viscosity, and increase the power performance

Inactive Publication Date: 2015-01-22
SHELL OIL CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0006]According to the present invention new fuel compositions have been found comprising a low sulphur petroleum derived diesel component and a Fischer-Tropsch derived gas oil component, further comprising a high viscosity low density Fischer-Tropsch derived base oil component (e.g. GTL Baseoil 3), which fuel compositions display increased power performance when compared to conventional diesel, with no detriment to emissions performance.
[0007]Thus, an embodiment of the present invention is a fuel composition prepared by blending a petroleum derived low sulphur diesel comprising <50 ppm of sulphur with a Fischer-Tropsch derived gasoil and a Fischer-Tropsch derived base oil wherein the amount of the petroleum derived low sulphur diesel is from 60% up to 80% v/v of the total composition; the amount of Fischer-Tropsch derived gasoil is from 10% up to 30% v/v of the total composition; the amount of Fischer-Tropsch derived

Problems solved by technology

However, generally, increasing fuel viscosity also increases fuel density, which can increase smoke emissions as the air/fuel ratio decreases.
However, there is a limit on how much can be blended whilst adhering to limits on certain propert

Method used

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Examples

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example 1

[0039]A Shell internal fuel blend modelling program ‘blendpro 2000’ was used to model the density and viscosity of a range of potential blends of the three components. The properties of the components used in this modelling are listed in Table 1. The complete possible blend range from 0-100% of each component was modelled at 10% increments, as represented in Table 2 and FIG. 1.

TABLE 1Components used for ‘blendpro’ modellingGTLGTLNameULSDGasoilBO3Density (Kg / l)0.8340.7840.807IBP166.0227.7334.0T10%205.0247.1353.0T20%225.0259.4354.5T30%244.0271.2356.0T40%259.0282.7357.0T50%272.0293.2358.5T60%284.0303.4360.5T70%295.0313.3362.5T80%309.0323.1364.5T90%325.0336.0367.5T95%339.0346.1370.0FBP355.0351.3374.0Cetane Number53.589.872.0Viscosity (cSt) at 40 deg2.683.439.58Sulphur (ppm w)48.03.01.0Total Aromatics24.30.50.1Cloud Point(C.)−8.0−9.0−28.0Flash Point(C.)64.5104.0190.0ULSD = Ultra Low Sulphur Diesel (50 mg S / kg)

TABLE 2Modelled Density and Viscosity of the possible blendsGTLGTLDensityViscos...

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Abstract

A fuel composition is prepared by blending a petroleum derived low sulphur diesel with a Fischer-Tropsch derived gasoil and a Fischer-Tropsch derived base oil wherein the amount of the petroleum derived low sulphur diesel is from 60% up to 80% v/v of the total composition; the amount of Fischer-Tropsch derived gasoil is from 10% up to 30% v/v of the total composition; the amount of Fischer-Tropsch derived base oil is from 10% up to 30% v/v of the total composition; the amounts of the Fischer-Tropsch derived gas oil and Fischer-Tropsch derived base oil together being at least 20% v/v of the total composition.
The fuel compositions of the invention have improved properties, in terms that they display increased power when compared to fuel compositions in which the Fischer-Tropsch derived base oil component is not present.

Description

PRIORITY CLAIM[0001]This non-provisional application claims priority to European Application No. 13176589.3, filed Jul. 16, 2013, the disclosures of which are incorporated herein by reference.FIELD OF THE INVENTION[0002]The present invention relates high power fuel compositions prepared by blending a petroleum derived low sulphur diesel with a Fischer-Tropsch (GTL) derived gasoil and a Fischer-Tropsch (GTL) derived base oil, and to the use of a Fischer-Tropsch derived base oil in said fuel compositions.BACKGROUND OF THE INVENTION[0003]It is well known that an increase in the viscosity of a fuel can increase the power performance of certain engines through the influence on the injection process. The principal mechanism leading to the power increase is reduced ‘leakback’ in the fuel injectors, i.e. with a high viscosity fuel the injected volume increases and hence there is a power benefit. However, generally, increasing fuel viscosity also increases fuel density, which can increase sm...

Claims

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Application Information

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IPC IPC(8): C10L1/04
CPCC10L1/04C10L2200/0492C10L1/1616C10L2230/22C10L2200/0446C10L1/08C10L2300/30C10L2200/0438
Inventor CLARK, RICHARD HUGHEWEN, JAMES PATRICKWARDLE, ROBERT WILFRED MATTHEWSCHINNUSAMY, BALASUBRAMANIANSTEVENSON, PAUL ANTHONY
Owner SHELL OIL CO
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