Bubble-Based Liquid Mixture Separation for Low Energy Distillation
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Solution Overview
Problem
Current methods for separating substances with slightly different boiling points, such as water isotopes, require high energy expenditure and large distillation columns due to low fractionation constants and limited vapor-liquid contact areas, resulting in low productivity and high investment costs.
Innovation Solution
Generating bubbles in the liquid phase with a carrier gas increases the liquid-vapor interface area, allowing rapid concentration of the more volatile component within the bubbles, which then release into the vapor phase for condensation, eliminating the need for solid surfaces and reducing energy consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If classical fractional distillation columns are used to separate substances with slightly different boiling points, then separation can be achieved, but the column height and energy expenditure become very large
Solution Approach 1:
The invention utilizes phase transitions by generating bubbles that carry liquid components into the vapor phase and then condensing them. This bubble-based phase transition mechanism replaces the need for tall distillation columns, achieving separation through repeated bubble generation and condensation cycles rather than long vapor上升 paths.
Solution Approach 2:
The invention changes the operating parameters by conducting separation at lower temperatures (e.g., 20-80°C) rather than at boiling points. This parameter change increases the fractionation constant and improves separation efficiency while reducing energy consumption and eliminating the need for tall columns.
2Manufacturing precision
If the contact area for vapor-liquid equilibrium is increased using traditional packing materials, then separation efficiency improves, but investment costs increase
Solution Approach 1:
The invention uses pneumatic principles by generating gas bubbles that rise through the liquid phase, creating extensive liquid-vapor contact areas without requiring solid packing materials. The bubbles themselves provide the contact interface, eliminating the need for expensive Raschig rings or other packing materials.
Solution Approach 2:
By utilizing bubble formation and collapse as a phase transition mechanism, the invention creates dynamic liquid-vapor interfaces that provide sufficient contact area for equilibrium without requiring static packing structures, thereby reducing manufacturing costs.
3Manufacturing precision
If distillation is performed at lower temperatures to increase fractionation constant, then separation efficiency improves, but productivity decreases due to lower vapor pressure
Solution Approach 1:
The invention employs periodic bubble generation and collapse cycles to continuously refresh the liquid-vapor interface. This periodic action maintains high fractionation constants at low temperatures while achieving sustained productivity through repeated cycles of bubble formation, equilibrium establishment, and vapor removal.
Solution Approach 2:
The rapid phase transitions between liquid and vapor phases during bubble formation and collapse enable efficient mass transfer at low temperatures, maintaining both high fractionation constants and acceptable productivity levels.
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 enhances separation efficiency, reduces energy costs, and allows for the production of deuterium-depleted water and other substances with higher productivity and lower investment costs, as the bubbles provide a larger contact area for equilibrium, enabling more efficient separation at lower temperatures.
Implementation Method 1
Generating bubbles in the liquid phase with a carrier gas increases the liquid-vapor interface area, allowing rapid concentration of the more volatile component within the bubbles
Implementation Method 2
which then release into the vapor phase for condensation
Implementation Method 3
Fractional distillation has been used in the industry for decades to separate substances of different boiling point
Data Source
AI summary
Process and apparatus for the separation of the components having different boiling points of a liquid mixture, characterized in that forming bubbles by a carrier gas in the liquid mixture where the one or more volatile component is getting enriched in the bubbles, then after said bubbles leave the liquid phase the released vapor content of them is collected and condensed and the obtained liquid being enriched in the more volatile component(s) is separated from the carrier gas.