Plate-Shaped Catalytic Membrane Reactor for Wet Microalgae Biofuel Conversion
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current biofuel production from microalgae is hindered by high energy consumption, operating costs, thermal stress, and the need for costly harvesting and separation processes, particularly due to the use of supercritical conditions and unsuitable biochemical methods like anaerobic digestion and fermentation.
Innovation Solution
A reactor with a plate-shaped catalytic membrane that directly converts wet microalgae into biofuels at low temperatures and atmospheric pressure, utilizing a bifunctional catalyst for hydrolysis and carbon-carbon bond breaking, enabling simultaneous separation of polar and nonpolar compounds and salts without the need for drying or harvesting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If supercritical conditions (high temperature and pressure) are used for biofuel conversion, then conversion efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent changes the operating parameters from supercritical conditions (high temperature and pressure) to mild conditions (atmospheric pressure and moderate temperature). This is achieved by using a continuous flow reactor with immobilized catalyst particles, allowing the reaction to proceed efficiently without requiring extreme conditions, thus reducing energy consumption while maintaining conversion efficiency
Solution Approach 2:
The patent replaces the mechanical system of supercritical fluid extraction with a catalytic conversion system. Instead of using high pressure and temperature to force extraction, immobilized catalyst particles facilitate the conversion of microalgae lipids to biofuels under milder conditions, substituting mechanical energy with catalytic action
2Quantity of substance
If harvesting and separation processes are used to concentrate microalgae, then microalgae concentration is improved, but operating costs increase
Solution Approach 1:
The patent extracts only the necessary component (lipids) directly from the microalgae cells using the catalyst, bypassing the need for complete harvesting and concentration of microalgae. The continuous flow system allows lipids to be converted to biofuels in situ, eliminating costly separation and concentration steps while maintaining efficient biofuel production
Solution Approach 2:
The patent performs preliminary action by pre-treating the microalgae suspension with the immobilized catalyst before full conversion. This allows the catalyst to access and convert lipids as they are released from cells in the continuous flow, eliminating the need for subsequent concentration and separation operations
3Ease of operation
If biochemical methods (anaerobic digestion and fermentation) are used for biofuel production, then operating costs are reduced, but production time increases
Solution Approach 1:
The patent changes the fundamental reaction mechanism from slow biochemical processes (anaerobic digestion and fermentation) to rapid catalytic conversion. The immobilized catalyst enables lipid conversion to occur in minutes rather than days, dramatically reducing production time while the continuous flow system maintains cost-effectiveness by enabling high-throughput processing
4Productivity
If drying process is used to increase microalgae concentration, then biofuel production efficiency is improved, but energy consumption increases
Solution Approach 1:
The patent performs preliminary action by conducting the catalytic conversion on wet microalgae before drying is required. The continuous flow reactor allows lipids to be converted to biofuels while the microalgae are still in their wet state, eliminating the need for energy-intensive drying processes while maintaining production efficiency
Solution Approach 2:
The patent extracts and converts the lipid component directly from wet microalgae suspension, separating the biofuel production step from the drying step. This allows biofuel synthesis to occur in the liquid phase using the immobilized catalyst, eliminating the need to dry the microalgae first and thus reducing energy consumption
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 approach reduces energy consumption, operating costs, and thermal stress while achieving efficient biofuel production with in-situ separation of products, eliminating the need for extra processing steps and costly units.
Implementation Method 1
A reactor with a plate-shaped catalytic membrane that directly converts wet microalgae into biofuels at low temperatures and atmospheric pressure, utilizing a bifunctional catalyst for hydrolysis and carbon-carbon bond breaking
Implementation Method 2
utilizing a bifunctional catalyst for hydrolysis and carbon-carbon bond breaking
Implementation Method 3
A reactor with a plate-shaped catalytic membrane that directly converts wet microalgae into biofuels at low temperatures and atmospheric pressure
Data Source
AI summary
In the present invention, a reactor (2) for direct conversion of microalgae in a growth medium into biofuels, prevents energy consumption, reduce operating costs, reduce thermal stress, and provide simultaneous separation of polar and nonpolar compounds and salts is disclosed. The reactor (2) subject to the present invention comprises at least one compartment (1) containing a plate-shaped catalytic membrane (3) and two cells, a warm water inlet (5), a warm water outlet (6), a wet microalgae inlet (7), a liquid products and unconverted wet algae outlet (8).