Thermal Conversion of Ketoacids to Hydrocarbons
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
There is a need for additional processes to upgrade ketoacids like levulinic acid to higher molecular weight compounds suitable for use as fuel or heavy oil components, which reduce processing costs and improve yield, as existing methods are costly and inefficient.
Innovation Solution
A method involving thermal treatment of ketoacids at temperatures between 200° C. and 500° C. in the absence of a catalyst to increase molecular weight through C-C-coupling reactions, producing compounds such as 4-methyl-6-oxonon-4-enedioic acid and 2,5,8-trioxo-nonane, which can be further processed into hydrocarbons suitable for fuel or heavy oil components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If catalytic routes are used to convert ketoacids to hydrocarbons, then the conversion efficiency is improved, but the processing costs increase and catalyst lifetime decreases
Solution Approach 1:
The patent removes the catalyst component from the conversion process entirely, using pure thermal treatment at 200-500°C to achieve C-C coupling reactions. This extraction of the catalyst eliminates costs associated with catalyst purchase, regeneration, and replacement while avoiding catalyst deactivation issues.
Solution Approach 2:
The ketoacids themselves undergo thermal decomposition and C-C coupling reactions without external catalytic assistance. The process relies on the inherent reactivity of ketoacids at elevated temperatures, making the system self-sufficient and eliminating dependency on catalyst materials.
2Quantity of substance
If existing thermal conversion methods are used, then molecular weight increase is achieved, but uncontrollable polymerization occurs reducing yield
Solution Approach 1:
The patent optimizes the temperature parameter to a specific range (200-500°C) that enables controlled C-C coupling reactions to increase molecular weight while avoiding the temperature conditions that trigger uncontrollable polymerization. This precise parameter control allows selective dimerization and oligomerization without runaway polymerization.
3Speed
If catalysts are used in the conversion process, then reaction rate is improved, but device complexity and processing costs increase
Solution Approach 1:
The patent eliminates the catalyst from the reaction system, simplifying the process design and eliminating the need for catalyst handling, filtration, and regeneration equipment. The thermal-only approach reduces device complexity while maintaining acceptable reaction rates through adequate heating.
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
This method effectively increases the molecular weight of ketoacids, reducing processing costs and producing hydrocarbons with desirable properties for fuel or heavy oil components, while avoiding uncontrollable polymerization and maintaining a useful yield.
Implementation Method 1
subjecting the feedstock to one or more C-C-coupling reaction(s); wherein the C-C-coupling reaction(s) are conducted by heating the feedstock to a temperature of above 200° C.
Implementation Method 2
heating the feedstock to a temperature of above 200° C., such as 200° C.-500° C.
Data Source
AI summary
The present disclosure relates to thermal conversion of ketoacids, including methods for increasing the molecular weight of ketoacids, the method including the steps of providing in a reactor a feedstock comprising at least one ketoacid. The feedstock is then subjected to one or more C-C-coupling reaction(s) by heating the feedstock to temperature of 200-500° C. in the absence of a catalyst.