Co-Processing VGO and Tall Oil Pitch for High Octane Gasoline
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Solution Overview
Problem
Current methods for producing gasoline from renewable biomass face challenges such as low yields, poor fuel quality, and incompatibility with existing infrastructure due to oxygen content in biomass, leading to issues like catalyst poisoning and char production, limiting the integration of bio-based fuels into conventional gasoline production.
Innovation Solution
A process involving the co-processing of vacuum gas oil (VGO) and tall oil pitch (TOP) in a catalytic cracking unit, where TOP is used as a co-feed without pretreatment, to produce a high octane gasoline component with increased Research Octane Number (RON) and Motor Octane Number (MON), allowing for blending with petroleum products without significant infrastructure modifications.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If biomass is converted to biohydrocarbons by thermochemical conversion, then renewable fuel is produced, but catalyst poisoning and clogging occur due to oxygen content in biomass
Solution Approach 1:
The patent uses a dual-bed reactor system where the first bed contains a catalyst for initial cracking and the second bed contains a different catalyst for further processing. This intermediary approach allows the oxygenated biomass components to be processed gradually, with the first catalyst handling the initial decomposition and the second catalyst completing the conversion, thereby preventing catalyst poisoning while maintaining renewable fuel production
Solution Approach 2:
The conversion process is divided into two separate stages using two different catalysts in sequence. The first cracking catalyst performs initial decomposition of the oxygenated biomass, and the second cracking catalyst completes the conversion to hydrocarbons. This segmentation allows each catalyst to be optimized for its specific function, preventing overwhelming deactivation from oxygen content while achieving complete conversion
2Quantity of substance
If steamcracking is used to process biomass, then hydrocarbon products are produced, but high amounts of carbonoxides are generated that existing steamcrackers cannot remove
Solution Approach 1:
The patent introduces a dual-bed reactor system as an intermediary between the steamcracking process and the final product output. The two different cracking catalysts in sequence act as intermediaries that progressively convert the biomass, allowing carbonoxides to be removed and converted in controlled stages rather than all at once, thus managing the harmful byproducts while maintaining hydrocarbon production
3Stability of the object's composition
If biocontent of fuels is increased to meet renewable energy requirements, then renewable energy share increases, but fuel quality decreases
Solution Approach 1:
The patent segments the cracking process into two stages with different catalysts, allowing the first stage to handle the oxygenated biomass components and the second stage to optimize the final fuel quality. This segmented approach enables high biocontent to be achieved while maintaining fuel quality specifications through progressive conversion and selective catalysis
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 achieves high biocontent gasoline with improved octane ratings, suitable for existing vehicle fleets, maintaining energy content equivalent to petroleum-based fuels, and utilizing conventional refining equipment, thus addressing the limitations of previous biomass conversion methods.
Implementation Method 1
directing these to a catalytic cracking unit to provide a cracking product
Implementation Method 2
fractionating the cracking product to provide at least gas stream, gasoline product, light oil and distillation bottom
Data Source
AI summary
This invention relates generally to a process for producing gasoline component. More particularly, the invention relates to a process for producing high octane gasoline component using renewable raw material as an additional feedstock. Further, the invention provides a gasoline fuel component having high biocontent obtainable from co-processing of vacuum gas oil and renewable feed stock material in a catalytic cracking unit.