Hollow Fiber Gas Dissolution for High-Concentration Ozone Solutions
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Solution Overview
Problem
Existing gas solution manufacturing systems face difficulties in producing high-concentration gas solutions due to the challenge of further dissolving ozone gas downstream, where the concentration is already high, making it hard to reuse undissolved ozone gas effectively.
Innovation Solution
A gas solution manufacturing device is designed with a gas dissolving unit in the liquid supply line, utilizing a hollow fiber membrane to dissolve the undissolved gas back into the liquid, allowing for efficient reuse and production of high-concentration gas solutions by isolating the gas and liquid with a gas-permeable membrane, and optionally using a booster pump and pressure adjustment units to optimize gas dissolution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Loss of energy
If another gas dissolving unit is provided in the supply line downstream to reuse undissolved gas, then gas reuse is improved, but the dissolution concentration is already high making it difficult to further dissolve gas
Solution Approach 1:
Instead of adding the gas dissolving unit downstream after the gas-liquid separation unit, the invention inverts the sequence by placing the gas dissolving unit upstream in the liquid supply line before the gas solution production unit. This allows undissolved gas to be dissolved into fresh liquid at lower concentration levels, overcoming the limitation of high dissolution concentration downstream.
Solution Approach 2:
The gas dissolving unit performs preliminary dissolution of gas into liquid before the main gas solution production process. By pre-dissolving gas in the liquid supply line, the system creates a foundation for more efficient subsequent mixing and achieves higher overall gas solution concentration.
2Quantity of substance
If gas and liquid are mixed at high pressure to increase dissolution, then gas solution concentration is improved, but bubble formation increases reducing solution quality
Solution Approach 1:
The hollow fiber membrane acts as an intermediary between gas and liquid phases, enabling gas dissolution without direct high-pressure mixing. Gas permeates through the membrane into liquid at controlled rates, achieving high concentration dissolution while avoiding bubble formation associated with direct high-pressure injection.
Solution Approach 2:
The invention replaces mechanical high-pressure mixing with membrane-based gas permeation. Instead of forcing gas and liquid together mechanically at high pressure, the system uses the hollow fiber membrane to facilitate gas transfer into liquid through diffusion and permeation, eliminating the need for high-pressure mechanical mixing.
3Productivity
If a hollow fiber membrane is used to isolate gas and liquid, then gas dissolution efficiency is improved, but device complexity increases
Solution Approach 1:
The hollow fiber membrane utilizes thin film technology to create an efficient gas-liquid interface. The thin membrane structure provides large surface area for gas dissolution while maintaining simplicity in overall system design, balancing dissolution efficiency with device complexity.
Solution Approach 2:
The system employs pneumatic principles by allowing gas to permeate through the hollow fiber membrane driven by pressure differential. This pneumatic approach simplifies the mechanism compared to mechanical mixing systems while achieving high dissolution efficiency through controlled gas permeation.
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 configuration enables the efficient reuse of undissolved gas, facilitating the production of high-concentration gas solutions by dissolving it back into the liquid at a lower pressure, reducing bubble formation and enhancing the concentration of the gas solution produced.
Implementation Method 1
a gas dissolving unit provided in the liquid supply line and configured to dissolve the discharged gas resulting from the gas-liquid separation in the liquid, in which the gas dissolving unit is configured with a hollow fiber membrane configured with a gas permeable membrane
Data Source
AI summary
A gas solution manufacturing device 1 includes a gas supply line 2 configured to supply a gas as a raw material of a gas solution, a liquid supply line 3 configured to supply a liquid as a raw material of the gas solution, a gas solution production unit 4 configured to mix the gas and the liquid together to produce the gas solution, a gas-liquid separation unit 5 configured to perform gas-liquid separation of the produced gas solution into a supplied liquid to be supplied to a use point and a discharged gas to be discharged through an exhaust port, and a gas dissolving unit 6 provided in the liquid supply line 4 and configured to dissolve the discharged gas resulting from the gas-liquid separation in the liquid. The gas dissolving unit 6 is configured with a hollow fiber membrane configured with a gas permeable membrane.