Metal Oxide Catalyst Sizing for Lipid Feedstock Fuel Yield
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Solution Overview
Problem
Existing reactor systems and processes for processing renewable lipid feedstocks produce intermediate products with a wide boiling range, including components that are less valuable for renewable transportation fuels, necessitating improved techniques to increase the yield of fuels boiling in the 40° C. to 300° C. range.
Innovation Solution
A reactor system using catalyst particles with a diameter of 0.01 to 0.5 mm, comprising a metal oxide on an oxide support, treats lipid feedstocks to produce a bio-oil with reduced oxygen and impurities, which is then fractionated to enhance the yield of transportation fuels within the desired boiling range.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If existing reactor systems and processes are used to process renewable lipid feedstocks, then processing can be performed, but the product distribution contains a wide boiling range with reduced yield of transportation fuels in the 40°C to 300°C range
Solution Approach 1:
The patent applies parameter changes by modifying catalyst particle size (0.01 to 0.5 mm range) and catalyst composition (metal oxide on oxide support) to control the reaction process, thereby shifting product distribution toward the desired 40°C to 300°C boiling range for transportation fuels
Solution Approach 2:
The patent uses composite catalyst materials consisting of metal oxide active components supported on oxide supports, creating a composite structure that enhances catalytic activity and selectivity for producing transportation fuel range products from lipid feedstocks
2Adaptability or versatility
If lipid feedstock contains contaminants such as gums, phospholipids, metals and metal compounds, then feedstock is more readily available, but converting catalysts are deleteriously affected
Solution Approach 1:
The patent employs disposable or replaceable catalyst beds that can be regenerated or replaced when contaminated, allowing the use of low-cost, contaminant-rich feedstocks without requiring extensive feedstock purification infrastructure
Solution Approach 2:
The catalyst acts as an intermediary that tolerates and processes contaminants from diverse feedstocks, converting them into useful products while protecting the downstream processing equipment from direct exposure to harmful substances
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 significantly increases the yield of transportation fuels such as renewable aviation fuel, diesel fuel, and gasoline by improving the distribution of boiling point ranges to focus on the 40° C. to 300° C. range, while reducing impurities and oxygen content.
Implementation Method 1
the lipid feedstock reacts with at least one bed of catalyst particles producing the treated stream, wherein the catalyst particles have a diameter of 0.01 to 0.5 mm and comprise a metal oxide on an oxide support
Implementation Method 2
fractionating the treated stream to obtain a gaseous fraction and a liquid fraction
Data Source
AI summary
A reactor system includes a reactor that treats a lipid feedstock using a metal oxide catalyst to produce a treated stream comprising a bio-oil. The metal oxide catalyst includes catalyst particles having a diameter of 0.01 to 0.5 mm. The metal oxide catalyst can comprise calcium on alumina. The bio-oil has an increased proportion of transportation fuels relative to other techniques for processing lipid feedstocks.