On-Site Chloramine Production via Asynchronous Reagent Feeding
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Solution Overview
Problem
Existing methods for producing chloramines as biocidal compositions are limited by their instability, requiring immediate use and generation outside of the treatment system, which imposes economic, efficiency, and practicality constraints due to rapid degradation and the need for continuous operation.
Innovation Solution
A method involving asynchronous feeding of concentrated amine and oxidizing halogen compounds into a wide space for mixing with a diluent, allowing for batch or continuous production of chloramine with controlled pH and concentration, enabling storage and flexible dosing into industrial water systems.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If conventional methods are used to produce chloramines, then chloramines can be generated for biocidal use, but they degrade rapidly and require immediate use, reducing stability and operational flexibility
Solution Approach 1:
The patent applies preliminary action by pre-mixing the amine source and oxidizing halogen compound in specific ratios and conditions to create a stable chloramine composition that can be stored and applied later, rather than producing and immediately using chloramine as in conventional methods
Solution Approach 2:
The patent changes key parameters including the concentration ratios of amine to halogen (exceeding 1:1 molar ratio), pH level (maintaining between 6-8), and temperature control during mixing to optimize chloramine stability and prevent rapid degradation
2Reliability
If chloramines are produced outside the treatment system, then production can be controlled, but it imposes economic and efficiency constraints due to continuous operation requirements
Solution Approach 1:
The patent enables self-service by allowing the industrial water system to produce its own chloramine disinfectant on-site using readily available amine sources already present in the water, eliminating the need for external production facilities and continuous operation
Solution Approach 2:
The patent applies universality by using amine sources that are already present in industrial water systems for dual purposes: as process chemicals and as precursors for chloramine disinfectant production, eliminating the need for separate production systems
3Object-affected harmful factors
If oxidizing biocides are used to control biological fouling, then microbial growth can be inhibited, but they are ineffective in waters with high chlorine demand, reducing reliability
Solution Approach 1:
The patent changes the chemical form from free chlorine to chloramine by adjusting the amine-to-halogen ratio and pH conditions, creating a disinfectant that is less susceptible to consumption by organic matter and maintains effectiveness in high chlorine demand environments
4Quantity of substance
If conventional chloramine production methods are used, then chloramines can be produced, but complex equipment and continuous operation are required, increasing device complexity
Solution Approach 1:
The patent extracts the essential function of chloramine production from complex continuous production equipment by using simple batch mixing of pre-prepared amine and halogen solutions, eliminating the need for complex reactors and continuous dosing systems
Solution Approach 2:
The patent segments the production process into separate preparation of amine source and oxidizing halogen compound solutions, which are then combined in controlled ratios, simplifying the overall system architecture and equipment requirements
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 results in a stable and persistent chloramine disinfectant that effectively controls biofouling, reducing operational constraints and enhancing microbiological control in industrial water systems, with simplified equipment requirements and safer operation.
Implementation Method 1
The reagents comprise: a) an amine source of disinfectant in concentrated form, b) an oxidizing halogen compound in concentrated form... allowing all the reagents to come into contact and mix with each other
Data Source
AI summary
A method of producing stable disinfectant for use as a biocidal composition. The method comprises: providing reagents, asynchronously feeding the reagents into a wide space, and allowing all the reagents to come into contact and mix with each other. The reagents comprise: a) an amine source in concentrated form, b) an oxidizing halogen compound in concentrated form, and c) a diluent. The use of asynchronous feeding and a wide space results in a dynamic biocide regimen. This regimen results in a changing environment that infestations have difficulty adapting to. This method also imparts superior results due to the avoidance of channeling effects which would otherwise weaken the effects of the biocide.