Hypochlorous Acid Composition With Chlorine Dioxide and Low Impurities
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Solution Overview
Problem
Existing biocidal compositions containing active chlorine, such as hypochlorous acid, are often contaminated with impurities like metals, chlorites, chlorates, and carbonates, which affect their purity and efficacy, and there is a need for improved disinfectant properties.
Innovation Solution
A method and installation for manufacturing hypochlorous acid from sodium or potassic hypochlorite, transforming chlorites and chlorates into chlorine dioxide, resulting in a chemical composition with controlled concentrations of hypochlorous acid, chlorine dioxide, and reduced impurities, using a controlled manufacturing process involving reactors and sensors.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sodium chloride electrolysis is used to form active chlorine, then biocidal activity is achieved, but impurities such as metals and contaminants are introduced reducing purity
Solution Approach 1:
The invention extracts and removes harmful impurities (metals, contaminants, excess chlorides) from the chemical composition through purification steps, while retaining the beneficial biocidal components (hypochlorous acid, chlorine dioxide). This resolves the contradiction by separating the useful biocidal activity from the harmful impurities introduced during manufacturing.
Solution Approach 2:
The invention changes the manufacturing parameters by using alternative raw materials (sodium hypochlorite, calcium hypochlorite) with different impurity profiles and controlling the manufacturing process to achieve optimal pH (4.5-7.5) and concentration ratios, thereby producing a purer composition with enhanced biocidal activity.
2Reliability
If conventional biocidal compositions are used, then disinfectant properties are provided, but impurities such as chlorites, chlorates and carbonates reduce efficacy
Solution Approach 1:
The invention converts the harmful impurities (excess chlorides, unwanted by-products) into beneficial outcomes by controlling the manufacturing process to minimize their formation and using purification steps to remove them. The controlled pH and concentration ratios transform potential harmful by-products into a synergistic mixture of hypochlorous acid and chlorine dioxide that enhances disinfectant properties.
Solution Approach 2:
The invention specifically targets and removes harmful impurities (chlorites, chlorates, carbonates, metals) through purification steps, while retaining and concentrating the beneficial biocidal components. This extraction process resolves the contradiction by eliminating the harmful substances that reduce efficacy while preserving the disinfectant properties.
3Quantity of substance
If high concentrations of sodium chloride are present, then active chlorine can be maintained, but metal impurities and contaminants increase
Solution Approach 1:
The invention changes the approach by using alternative raw materials (sodium hypochlorite, calcium hypochlorite) that provide active chlorine without requiring high sodium chloride concentrations. The manufacturing process controls pH and concentration ratios to maintain biocidal activity while minimizing the introduction of metal impurities and contaminants associated with traditional salt electrolysis.
Solution Approach 2:
The invention removes metal impurities and contaminants through purification steps, separating them from the active chlorine components. This allows maintenance of high active chlorine concentration while achieving low metal impurity content, resolving the contradiction between quantity and purity.
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 produces a stable, high-purity biocide solution with enhanced disinfectant properties due to the synergistic action of hypochlorous acid and chlorine dioxide, minimizing impurities and ensuring controlled reaction conditions.
Implementation Method 1
the method according to the invention includes some reactions that allow the transformation of these chlorites and chlorates, obtaining, as a beneficial by-product, a certain amount of chlorine dioxide
Implementation Method 2
It is known that active chlorine can be formed in aqueous solution by the electrolysis of sodium chloride
Data Source
Figure 1
AI summary
The invention refers to the field of biocides and refers to an aqueous chemical composition that comprises hypochlorous acid and chlorine dioxide. It also refers to a method for manufacturing hypochlorous acid for obtaining the chemical composition and to an installation to perform the method. The installation comprises a first reactor (RNK), an acid reactor (RAK), in which an acid composition is mixed with an aqueous solution coming from the first reactor (RNK), and a basic reactor (RBK), in which a basic composition is mixed with an aqueous solution coming from the first reactor (RNK). The solution obtained in the basic reactor (RBK) is mixed with the solution obtained in the acid reactor (RAK) to form a mixed solution, which is discharged into the first reactor (RNK).