Bio-Ethylene SAF Pathway for Lower-Cost Sustainable Jet Fuel
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Solution Overview
Problem
Current technologies for producing sustainable aviation fuels (SAF) are not economically viable, leading to high production costs and limited market penetration, despite their potential for reducing greenhouse gas emissions and meeting future jet fuel demand.
Innovation Solution
A process involving the dehydration of biomass ethanol or bio-syngas ethanol to generate bio-ethylene, followed by tailored oligomerization, cyclization, and hydrogenation reactions to produce jet fuel components such as paraffins, cycloparaffins, and aromatics, which are blended to form sustainable jet fuels with desired properties.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If current SAF production technologies are used, then environmental sustainability and emission reduction are improved, but production cost and economic viability deteriorate
Solution Approach 1:
The patent applies parameter changes by modifying the chemical reaction conditions and catalyst selection in the oligomerization process. Specifically, it uses tailored catalyst systems and controlled reaction parameters (temperature, pressure, catalyst concentration) to optimize the production of jet fuel components from bio-ethylene, thereby reducing production costs while maintaining sustainability credentials
Solution Approach 2:
The patent applies local quality by selectively producing specific jet fuel components (paraffins, cycloparaffins, aromatics) with desired local properties. The process uses tailored reaction conditions to create fuel components with specific molecular structures and properties that match conventional jet fuel specifications, thereby improving economic viability while maintaining environmental benefits
2Productivity
If SAF production is scaled up to meet future jet fuel demand, then market availability is improved, but production cost and economic viability worsen
Solution Approach 1:
The patent applies segmentation by dividing the jet fuel production process into distinct operational steps: bio-ethylene production, oligomerization, cyclization, and hydrogenation. This segmentation allows for optimized processing at each stage, improved process efficiency, and better economic viability while maintaining high production capacity for meeting future demand
Solution Approach 2:
The patent applies universality by creating a multi-functional production process that can generate multiple jet fuel components (paraffins, cycloparaffins, aromatics) from a single bio-ethylene feedstock. This multi-functionality improves production efficiency and economic viability while enabling scaled-up production to meet future market demands
3Reliability
If conventional jet fuel specifications are maintained, then fuel performance is improved, but sustainability credentials deteriorate
Solution Approach 1:
The patent applies parameter changes by modifying the chemical composition parameters of jet fuel while maintaining performance specifications. The process produces fuel components with controlled molecular structures, hydrogen-to-carbon ratios, and compositional distributions that meet conventional jet fuel performance requirements while using sustainable bio-ethylene feedstocks to maintain environmental credentials
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 process enables the production of sustainable jet fuels with improved economic viability and compliance with sustainability criteria, allowing for certification as CORSIA and LCAF, while maintaining performance characteristics comparable to conventional jet fuels.
Implementation Method 1
generating bio-ethylene by dehydration of biomass ethanol or a bio-syngas ethanol
Implementation Method 2
employing a tailored selection of oligomerization, cyclization, and hydrogenation reactions to generate each class of compounds
Implementation Method 3
olefin oligomers can be hydrogenated to linear and branched paraffins
Implementation Method 4
these paraffins and olefin oligomers can be cyclized to form bio-sourced benzene, toluene, xylenes, and other substituted benzenes
Implementation Method 5
these aromatic compounds and mixtures of compounds subsequently can be hydrogenated to form cycloparaffins or naphthenes
Data Source
AI summary
Described are new processes for making sustainable jet fuels and components thereof, based upon generating bio-ethylene by dehydration of biomass ethanol or a bio-syngas ethanol, and subsequently employing a tailored selection of oligomerization, cyclization, and hydrogenation reactions to generate each class of compounds which can be used as components in a sustainable aviation fuel. For example bio-ethylene oligomerization can provide olefin oligomers which can be hydrogenated to linear and branched paraffins, these paraffins can be cyclized to form bio-sourced aromatic compounds which subsequently can be hydrogenated to form cycloparaffins or naphthenes. These compounds can be blended to provide sustainable products in the kerosene jet fuel range (C8-C16) or wide-cut jet fuel range (C5-C15 or C4-C16).