Fischer-Tropsch Diesel Blend for Emissions and Density
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Conventional diesel fuels face challenges in reducing vehicle emissions, particularly particulates and black smoke, due to their high density and content of undesirable components like sulphur and aromatics, which are not effectively addressed by existing fuel compositions.
Innovation Solution
A fuel composition is developed by blending a non-Fischer-Tropsch derived diesel base fuel with a Fischer-Tropsch derived kerosene fuel and optionally a Fischer-Tropsch derived gas oil, optimizing the blend's density, cetane number, and reducing sulphur content to improve emissions and performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional petroleum derived diesel fuels are used, then fuel density and energy content are maintained, but vehicle emissions of particulates and black smoke increase
Solution Approach 1:
The patent combines Fischer-Tropsch derived gas oil (low density, low sulphur, low aromatics) with conventional petroleum derived diesel (higher density, higher energy content) in specific proportions to create a blended fuel that achieves both reduced emissions and maintained energy content. This merging of two different fuel sources resolves the contradiction between low density and high emissions.
Solution Approach 2:
The patent changes the density parameter of the fuel blend by controlling the proportion of Fischer-Tropsch derived gas oil (which has lower density) mixed with conventional diesel. By adjusting this parameter within specific ranges, the fuel achieves optimal balance between emissions reduction and energy content maintenance.
2Object-affected harmful factors
If Fischer-Tropsch derived gas oil is blended to reduce emissions, then particulate and black smoke emissions decrease, but fuel energy content may be reduced
Solution Approach 1:
The patent optimizes the blending ratio parameters to maintain fuel energy content within acceptable ranges while achieving significant reductions in particulate emissions. By carefully controlling the proportion of Fischer-Tropsch derived gas oil, the fuel blend achieves both environmental and energy performance goals.
3Object-affected harmful factors
If sulphur content is reduced in diesel fuel, then emissions improve, but fuel stability and combustion properties may deteriorate
Solution Approach 1:
The Fischer-Tropsch derived gas oil acts as an intermediary component that provides low sulphur content while maintaining good fuel stability and combustion properties. This intermediate substance bridges the gap between ultra-low sulphur requirements and fuel performance stability.
4Object-affected harmful factors
If aromatic content is reduced to improve emissions, then particulate matter decreases, but cold flow properties may worsen
Solution Approach 1:
The patent adjusts the aromatic content parameter within specific ranges to achieve optimal balance between particulate matter reduction and cold flow properties. By controlling aromatic content rather than eliminating it completely, the fuel maintains adequate cold flow performance while significantly reducing emissions.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The blend results in lower vehicle emissions, improved cold flow properties, and enhanced engine performance, while meeting regulatory specifications for density and cetane number, thereby addressing the limitations of conventional diesel fuels.
Implementation Method 1
Fischer-Tropsch methane condensation processes
Implementation Method 2
Fischer-Tropsch reaction converts carbon monoxide and hydrogen into longer chain, usually paraffinic, hydrocarbons: n(CO + 2H2) = (-CH2-)n + nH2O + heat, in the presence of an appropriate catalyst
Implementation Method 3
blending a non-Fischer-Tropsch derived diesel base fuel with a Fischer-Tropsch derived kerosene fuel and optionally a Fischer-Tropsch derived gas oil
Implementation Method 4
fuel composition containing a blend of...
Data Source
AI summary
Fuel composition containing a blend of a non-Fischer-Tropsch derived, preferably petroleum derived, diesel base fuel and a Fischer-Tropsch derived kerosene fuel product, optionally together with a Fischer-Tropsch derived gas oil. The Fischer Tropsch derived kerosene fuel product may be included for the purpose of improving the performance of a combustion engine or vehicle which is running or is intended to be run on the fuel composition. It may also be used to reduce vehicle emissions and/or improve the cold flow performance of the composition and/or increase the cetane number of the composition.