Dechlorination Solid Formulation Using Eutectic Binder Compression
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Solution Overview
Problem
Current dechlorination compositions for water treatment require costly and cumbersome processing steps, such as heating, which increases manufacturing costs and reduces throughput, necessitating a more efficient method for forming dechlorination solids.
Innovation Solution
A dechlorination composition comprising alkali metal sulfite, alkali metal thiosulfate, hydrogenated vegetable oil, and saccharide, which can be combined and compressed into solid forms like tablets or pellets without extensive processing, using ambient conditions or mild heating to achieve desired hardness and dissolution rates.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If current dechlorination compositions are processed using conventional methods (heating, drying, granulating), then the dechlorination tablets can be formed, but the manufacturing cost increases and throughput decreases
Solution Approach 1:
The patent changes the physical-chemical parameters of the binder system by using a eutectic mixture of fatty acid and metal salt that melts at a specific temperature range. This phase transition parameter change allows the binder to become liquid during compression, forming strong bonds, then solidify upon cooling, eliminating the need for subsequent heating and drying steps while maintaining tablet integrity and production efficiency
Solution Approach 2:
The patent employs a composite binder system consisting of fatty acid combined with metal salt (such as calcium stearate or zinc stearate). This composite material creates a eutectic mixture with lowered melting point, enabling the binder to transition from solid to liquid state during compression, then re-solidify to form strong tablet bonds without requiring energy-intensive drying processes
2Strength
If heating is applied to form dechlorination tablets, then the tablets achieve desired hardness, but manufacturing costs increase and processing time extends
Solution Approach 1:
The patent utilizes phase transition of the fatty acid-metal salt binder system, which melts during compression to enable particle bonding, then solidifies upon cooling to provide tablet hardness. This phase change mechanism replaces thermal heating with mechanical compression-induced melting and subsequent cooling, achieving the desired tablet strength without energy-intensive heating and drying steps
Solution Approach 2:
The patent replaces the thermal field (heating system) with a mechanical field (compression system). By applying sufficient compression force during tablet formation, the binder undergoes phase transition from solid to liquid, enabling bonding. After compression, the binder naturally solidifies upon cooling, providing tablet hardness without requiring subsequent heating treatment
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 solution allows for the production of dechlorination solids with improved hardness and controlled dissolution rates, enabling effective removal of residual chlorine from water while reducing manufacturing costs and complexity.
Implementation Method 1
the binder can comprise a eutectic mixture of a fatty acid and a metal salt
Implementation Method 2
controlled dissolution rates
Data Source
AI summary
A dechlorination composition for dechlorinating water, such as treated water, includes at least one alkali metal sulfite, at least one alkali metal thiosulfate, at least one hydrogenated vegetable oil, and at least one saccharide. The dechlorination composition can also include at least one colorant and at least one halide salt. The dechlorination composition can be formed into a compressed solid. Methods of preparing compressed solids of dechlorination compositions are also disclosed.