Aviation Fuel Component Composition for Cold-Property Blendability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing processes for producing aviation fuel components from renewable raw materials yield low quantities and have quality issues, limiting their use in aviation fuels.
Innovation Solution
A process combining hydroisomerization and hydrocracking to produce an aviation fuel component with a high content of n-paraffins, monobranched i-paraffins, and multiple-branched i-paraffins, achieving a weight ratio of C6-C18 multiple-branched i-paraffins to C6-C18 n-paraffins of at least 10, with T10 and T90 temperatures between 120 to 295°C, enhancing cold properties and blendability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional processes are used to produce aviation fuel components from renewable raw materials, then production can proceed with standard methods, but the yield of aviation fuel components is relatively low and quality is insufficient
Solution Approach 1:
The patent applies parameter changes by modifying the hydroisomerization conditions including temperature (200-450°C), pressure (1-10 MPa), weight hourly space velocity (0.1-10 h⁻¹), and hydrogen to feed ratio (10-1000 normal liters H2 per liter feed) to optimize the conversion of n-paraffins to isoparaffins, achieving both high yield and high quality aviation fuel components with at least 95 wt-% isoparaffins
Solution Approach 2:
The patent implements dynamics by using a two-stage process where the first stage performs hydroisomerization to convert n-paraffins to isoparaffins, and the second stage performs hydrocracking to adjust the carbon number distribution. This dynamic, multi-stage approach allows flexible adjustment of process parameters to simultaneously maximize yield and quality
2Reliability
If the content of multiple-branched isoparaffins is increased to improve cold properties, then cold properties are enhanced, but the complexity of the production process increases
Solution Approach 1:
The patent uses dynamic process control with adjustable temperature, pressure, and space velocity parameters in the hydroisomerization stage to optimize the formation of multiple-branched isoparaffins. By dynamically adjusting these parameters, the process achieves high content of multiple-branched isoparaffins (weight ratio to n-paraffins of at least 10) without requiring overly complex equipment modifications
Solution Approach 2:
The patent applies parameter changes by optimizing reaction conditions including temperature (200-450°C), pressure (1-10 MPa), and weight hourly space velocity (0.1-10 h⁻¹) to promote the formation of multiple-branched isoparaffins during hydroisomerization, achieving improved cold properties while maintaining process feasibility
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 resulting aviation fuel component exhibits surprisingly good cold properties and high-volume share in aviation fuel compositions, improving performance and stability while meeting safety and environmental standards.
Implementation Method 1
Production of the aviation fuel component may employ a certain process comprising a combination of hydroisomerisation and hydrocracking of a paraffinic feed
Implementation Method 2
Production of the aviation fuel component may employ a certain process comprising a combination of hydroisomerisation and hydrocracking of a paraffinic feed
Data Source
AI summary
Herein is disclosed an aviation fuel component including predominantly C6-C18 n-paraffins, C6-C18 mono-branched i-paraffins, and C6-C18 multiple-branched i-paraffins. The aviation fuel component has a very high isomerization degree and relatively broad carbon number distribution. The present aviation fuel component is particularly useful in aviation fuels, wherein it can be incorporated even in very high proportions.