Gas-Liquid Mixing Equipment With Bubble Recovery and Recycling
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Solution Overview
Problem
Existing industrial processes for mixing a liquid and a gas, such as carbon dioxide with water, suffer from inefficiencies, with CO2 bubbles often not reacting or mixing completely, leading to incomplete reactions and gas loss, with conventional ejectors improving efficiency to only about 90%.
Innovation Solution
A four-component equipment and process involving a high-pressure gas injector, low-pressure injector with a pre-mixer, a gas bubble mixer and sprayer, and a gas bubble recovery recipient, utilizing a Venturi ejector and static mixer with segmented propellers to reduce bubble size and recover non-reacted gas for recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional ejectors based on Venturi tubes are used to promote gas-liquid mixing, then the mixing efficiency is improved to about 90%, but there is still a portion of gas lost because it does not react or mix with the liquid
Solution Approach 1:
The patent applies the discarding and recovering principle by capturing unreacted gas bubbles that escape from the liquid phase and recycling them back to the injection point. The system includes a gas recovery system with sensors that detect unreacted gas and redirect it through a recycling mechanism, ensuring that gas is not discarded but rather recovered and reused, thereby eliminating waste while maintaining high mixing efficiency.
Solution Approach 2:
The patent implements feedback control by using sensors to monitor the mixing process and detect unreacted gas bubbles. The system continuously measures the state of the liquid-gas mixture and adjusts the injection and mixing parameters in real-time based on this feedback, optimizing the reaction efficiency and preventing gas loss through dynamic control adjustments.
2Productivity
If CO2 bubbles are injected into the liquid, then the reaction or mixing process is promoted, but the bubbles tend to leave the solution naturally due to their lightness, preventing complete interaction
Solution Approach 1:
The patent applies the anti-weight principle by using a recirculation system that counteracts the natural buoyancy of gas bubbles. The system captures rising bubbles and redirects them back into the reaction zone through controlled injection, effectively counterbalancing the upward force of buoyancy and ensuring bubbles remain in the liquid phase long enough to complete the reaction.
Solution Approach 2:
The patent ensures continuous useful action by maintaining a closed-loop recirculation system where gas bubbles are continuously captured, redirected, and re-injected into the liquid phase. This continuous cycle prevents bubbles from escaping and ensures uninterrupted interaction between gas and liquid, maintaining consistent reaction efficiency throughout the process.
3Productivity
If the size of CO2 bubbles in the aqueous solution is reduced, then the production of carbonic acid is improved, but the complexity of the mixing device increases
Solution Approach 1:
The patent applies segmentation by dividing the gas injection process into multiple stages with different injection points and parameters. The system uses segmented propellers and multiple injection zones to create progressively smaller bubbles through sequential mechanical disruption, achieving fine bubble size without requiring a single complex high-shear mixing device.
Solution Approach 2:
The patent uses an intermediary recirculation system that mediates between gas injection and liquid mixing. The system introduces a intermediate recirculation loop with controlled residence time, allowing bubbles to be gradually broken down and distributed throughout the liquid phase without requiring direct high-complexity contactors, thereby simplifying the overall mixing device architecture.
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
Achieves a mixing efficiency of over 95% by ensuring complete interaction between the gas and liquid, reducing operating costs and environmental impact through gas recovery and recycling.
Implementation Method 1
conventional ejectors, which are devices aimed at promoting the mix between CO2 (gas) and the aqueous solution (liquid), are being used. These ejectors are built based on Herschel-type Venturi tubes
Implementation Method 2
The objective of the devices developed to improve the creation of carbonic acid is to create smaller bubbles and a more turbulent flow in order to have a complete and efficient gas-liquid bubble mix
Implementation Method 3
a good interaction between the gas and the liquid to create carbonic acid is not achieved
Data Source
AI summary
The object of the invention is to achieve a more efficient and complete mix between a liquid and gas by means of a system comprising 4 components in order to carry out a reaction or mixing process that improves the contact, and as a result, the reaction or mixing between a liquid and a gas, followed by a recovery stage of the gas that does not react during the reaction or formation of said mixture. This gas is recycled to the reaction or mixing zone, permitting the improvement of the efficiency and the cost of the reaction or mixing process between the liquid and the gas.