Naphthene Distillate Composition for Diesel Fuel Properties
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Solution Overview
Problem
Refinery streams require blending with additives to meet industry and government standards for diesel fuel, but existing additives often improve one property at the expense of others, and renewable blend components like FAME can lower energy density and cloud point.
Innovation Solution
Naphthene-containing distillate compositions produced through hydroprocessing, which can be blended with refinery streams to improve multiple properties simultaneously, such as cetane number, cloud point, and energy density, while maintaining or enhancing performance characteristics.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If lighter kerosene type material is used to improve cloud point, then cloud point is improved, but density and cetane number may decrease
Solution Approach 1:
The invention changes the chemical composition parameters of the distillate stream by controlling the hydroprocessing conditions to produce a specific composition range (60-90 wt% naphthenes, 10-40 wt% non-cyclic paraffins, 0-30 wt% cyclic paraffins) that achieves cloud point improvement while maintaining density and cetane number
Solution Approach 2:
The invention creates a composite blend of multiple hydrocarbon components (naphthenes, non-cyclic paraffins, cyclic paraffins) in specific proportions to achieve a balanced combination of properties including cloud point, density, and cetane number that cannot be achieved with single-component additives
2Reliability
If renewable blend components (FAME or renewable diesel) are used to increase cetane number, then cetane number is improved, but energy density and cloud point are lowered
Solution Approach 1:
The invention modifies the compositional parameters of the distillate stream through controlled hydroprocessing to achieve a cetane number of at least 47 while maintaining energy density above 18.5 MJ/L and cloud point below -40°C, eliminating the need for renewable blend components that compromise energy density
3Reliability
If multiple additives are used to improve multiple properties, then multiple properties are improved, but blending complexity increases
Solution Approach 1:
The invention creates a multi-functional distillate stream composition that simultaneously improves cloud point, cetane number, and energy density through its inherent compositional characteristics, eliminating the need for multiple separate additives and simplifying the blending process
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 naphthene-containing distillate compositions achieve a desirable combination of physical and performance properties, enabling the production of diesel fuel that meets industry standards, with improved cetane number, cloud point, and energy density, and can be used as a neat fuel with increased fuel economy and lower emissions.
Implementation Method 1
naphthene-containing distillate compositions produced during hydroprocessing (hydrocracking) of petroleum feeds
Data Source
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AI summary
Naphthene-containing distillate compositions are provided herein. Methods of improving fuel compositions and blends using the naphthene-containing distillate compositions are also provided herein.