Reverse Osmosis Membrane Purification of Hydrogen Peroxide
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Solution Overview
Problem
Conventional methods for producing purified aqueous hydrogen peroxide solutions often result in high impurity levels and foaming or odor issues during degassing, which are not adequately addressed.
Innovation Solution
A method involving an osmosis membrane treatment process using a reverse osmosis membrane, where the pressure and linear velocity of the membrane and solution are adjusted to maintain a specific integrated value, combined with surface roughness and viscosity considerations, to reduce impurities and suppress foaming and odor.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If conventional purification methods (distillation, cyclones, adsorption resins, ion exchange resins) are used to purify aqueous hydrogen peroxide solutions, then some purification is achieved, but the solutions still contain relatively large amounts of impurities such as organic substances, and foaming and odor during degassing cannot be sufficiently suppressed
Solution Approach 1:
The invention changes the operational parameters of the reverse osmosis membrane system, specifically controlling the product of pressure (MPaG) and linear velocity (m³/(m²·h)) to be less than 0.15, and temperature to be 10-30°C. These parameter optimizations enable the membrane to effectively remove organic impurities while preventing foaming and odor issues, achieving superior purification quality compared to conventional methods
Solution Approach 2:
The reverse osmosis membrane acts as an intermediary separation medium between the crude hydrogen peroxide solution and the purified product. The membrane selectively permits water and hydrogen peroxide to pass through while blocking organic impurities, serving as an effective mediator that achieves high purification quality without the drawbacks of conventional purification methods
2Productivity
If higher pressure is applied to the reverse osmosis membrane to increase purification efficiency, then impurity removal improves, but foaming and odor generation increases
Solution Approach 1:
The invention identifies that simply increasing pressure is not the solution; instead, it optimizes the combined parameter of pressure × linear velocity to be less than 0.15 MPaG·m³/(m²·h). This nuanced parameter control allows sufficient purification efficiency while maintaining low foaming and odor generation, resolving the contradiction between productivity and harmful factor generation
Solution Approach 2:
The invention emphasizes controlling the linear velocity of the hydrogen peroxide solution through the membrane, which dynamically adjusts the flow characteristics. By optimizing both pressure and velocity together rather than applying maximum pressure alone, the system achieves dynamic balance between purification efficiency and suppression of foaming/odor phenomena
3Manufacturing precision
If the reverse osmosis membrane surface roughness is increased to improve impurity rejection, then purification quality improves, but membrane permeability decreases
Solution Approach 1:
The invention optimizes the surface roughness parameter to a specific range of 0.24-1.0 μm. This optimized roughness range provides sufficient surface texture for impurity rejection while maintaining adequate permeability. The invention further combines this with temperature control (10-30°C) to ensure the membrane operates at optimal performance, achieving balance between impurity rejection and permeability
Solution Approach 2:
The invention focuses on the local surface properties of the reverse osmosis membrane, specifically the surface roughness between 0.24-1.0 μm. This localized surface quality optimization creates sufficient surface texture for impurity rejection while avoiding excessive roughness that would harm permeability. The membrane's surface morphology is carefully tailored to achieve the desired balance
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
The method effectively reduces impurities and prevents foaming and odor in the hydrogen peroxide solution, producing a high-quality purified product.
Implementation Method 1
an osmosis membrane treatment process of bringing a crude aqueous hydrogen peroxide solution containing impurities into contact with a reverse osmosis membrane
Data Source
AI summary
Provided is a method for producing aqueous hydrogen peroxide solution, the method capable of reducing impurities such as organic substances and preventing the occurrence of foaming and odor. The solution for the aforementioned problems is a method for producing a purified aqueous hydrogen peroxide solution, the method including a predetermined osmosis membrane treatment process of bringing a crude aqueous hydrogen peroxide solution containing impurities into contact with a reverse osmosis membrane. That is, the aforementioned problems are solved by a method for producing a purified aqueous hydrogen peroxide solution, in which a first integrated value that is the integrated value of the pressure and the linear velocity are adjusted so that the pressure of reverse osmosis membrane (MPaG) and the linear velocity of the aqueous hydrogen peroxide solution (m3/(m2·h)) is less than 0.15 in the osmosis membrane treatment process.