Hypochlorous Acid Production via pH-Controlled Mixing
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Solution Overview
Problem
The existing methods for producing hypochlorous acid solutions, such as the electrolysis method and two-component method, face challenges in efficiency and safety due to the generation of chlorine gas, which is hazardous and impractical for large-scale use in fields like food manufacturing and agriculture.
Innovation Solution
A method and apparatus are developed to produce hypochlorous acid solutions by separately preparing an acidic aqueous solution with a pH of 1.5 to 5 and a hypochlorite solution, then mixing them, ensuring the pH remains above 1.5 to prevent chlorine gas generation, using an apparatus with pH measurement and control to maintain safe conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the two-component method is used to produce hypochlorous acid solution, then the production efficiency and scalability are improved, but chlorine gas is generated as a harmful byproduct
Solution Approach 1:
The invention changes the pH parameter control strategy by preparing the acidic solution at a higher pH (1.5-5.0) than conventional methods, and carefully controlling the mixing process to maintain the final solution pH between 5-7. This parameter change prevents chlorine gas generation while maintaining high production efficiency through the two-component method
Solution Approach 2:
The invention performs preliminary preparation of the acidic aqueous solution at a controlled pH level (1.5-5.0) before mixing with hypochlorite solution. This preliminary action ensures that when the solutions are mixed, the pH remains in the safe range (5-7) that prevents chlorine gas generation, thus eliminating the harmful byproduct while maintaining efficient production
2Reliability
If conventional two-component method is used with lower pH acidic solution, then hypochlorous acid solution is produced effectively, but chlorine gas is generated creating safety hazards
Solution Approach 1:
The invention changes the pH parameter from conventional low pH values to a higher range (1.5-5.0) for the acidic solution, and controls the final mixed solution pH to be between 5-7. This parameter change maintains the effectiveness of hypochlorous acid for disinfection while eliminating chlorine gas generation and associated safety hazards
Solution Approach 2:
The invention converts the potentially harmful low pH condition that causes chlorine gas generation into a beneficial higher pH condition (1.5-5.0) for the acidic solution. This transformation maintains the disinfection effectiveness of hypochlorous acid while converting the harmful chlorine gas byproduct into harmless water and salt, thus eliminating safety hazards
3Object-generated harmful factors
If electrolysis method is used to produce hypochlorous acid solution, then no chlorine gas is generated, but expensive electrolysis devices are required and production amount is insufficient
Solution Approach 1:
The invention extracts and eliminates the need for complex electrolysis devices by using a simplified two-component chemical reaction method. By taking out the expensive electrolysis equipment requirement and using only simple mixing of acidic solution and hypochlorite solution, the invention achieves chlorine gas-free production with much lower device complexity and cost
Solution Approach 2:
The invention replaces expensive, complex electrolysis devices with simple, inexpensive mixing apparatus. The method uses readily available acidic solutions and hypochlorite solutions that can be easily prepared and mixed, eliminating the need for costly electrolysis equipment while achieving sufficient production amounts
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 effectively prevents chlorine gas generation, allowing for the safe and efficient production of hypochlorous acid solutions with concentrations up to 2240 ppm, suitable for disinfection and sterilization without hazardous byproducts.
Implementation Method 1
mixing both said aqueous solutions... the resulting hypochlorous acid solution
Data Source
AI summary
The subject is to provide a method and apparatus for producing hypochlorous acid solution of high concentration in a simple and easy manner without generating chlorine gas in principle. In the present invention to solve the above problem, an acidic aqueous solution with a pH of 1.5 to 5 and an aqueous solution containing hypochlorous acid aqueous solution are separately and independently prepared respectively, and both aqueous solutions are mixed to obtain hypochlorous acid water with a pH of 5 to 7.