Fixed Bed Decolorization for Polyunsaturated Fatty Acids
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Solution Overview
Problem
Current decolorization processes for polyunsaturated fatty acids, such as those using kettle-type mixing with decolorizers like activated carbon or diatomite, face issues like oxidation of products due to air exposure, complex operations, difficulty in recycling decolorizers, environmental pollution, and low yield, making them unsuitable for large-scale production.
Innovation Solution
A fixed bed decolorization process where a polyunsaturated fatty acid feedstock or solution is passed through a fixed bed filled with carclazyte or silica gel, using a dissolving solvent, allowing for continuous operation and easy recycling of the decolorizer, which reduces oxidation and environmental impact while improving yield and product quality.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If kettle type mixing decolorization process is used with decolorizers like activated carbon or diatomite, then decolorization effect is achieved, but product oxidation occurs due to air exposure and operation complexity increases
Solution Approach 1:
The patent replaces the mechanical kettle-type mixing system with a fixed bed adsorption system. The feedstock flows through a fixed bed column containing decolorizer particles, eliminating the need for mechanical stirring, heating, and filtration operations. This substitution reduces operational complexity while maintaining decolorization effectiveness through adsorption mechanisms.
Solution Approach 2:
The patent extracts and removes the decolorizer from the product stream by using a fixed bed configuration where the decolorizer remains stationary in the column. The decolorized product flows out freely without carrying decolorizer particles, eliminating the need for complex filtration and decolorizer recovery operations required in kettle-type mixing processes.
2Manufacturing precision
If kettle type mixing decolorization is used, then decolorization is achieved, but decolorizer recovery and recycling become difficult
Solution Approach 1:
The patent extracts the decolorizer from the product stream by using a fixed bed configuration where the decolorizer remains stationary in the column. The decolorized product flows out freely without carrying decolorizer particles, eliminating the need for complex filtration and decolorizer recovery operations required in kettle-type mixing processes.
Solution Approach 2:
The patent implements decolorizer recovery by maintaining the decolorizer in a fixed bed column where it can be reused continuously. The decolorizer is not discarded with the product but remains in the column for repeated use, and can be regenerated in place by washing with appropriate solvents, enabling easy recovery and recycling.
3Manufacturing precision
If intermittent kettle type operation is used, then decolorization is achieved, but productivity decreases and industrial scale production becomes difficult
Solution Approach 1:
The patent implements continuous operation by flowing the feedstock continuously through the fixed bed column. The decolorization process occurs continuously as the feedstock passes through the decolorizer bed, eliminating the intermittent batch operations required in kettle-type mixing. This enables continuous production and scales efficiently to industrial levels.
4Manufacturing precision
If kettle type mixing decolorization is used with open operation, then decolorization is achieved, but environmental pollution and safety problems increase
Solution Approach 1:
The patent uses a fixed bed column that acts as a contained system, preventing the escape of decolorizer particles and odorous substances into the environment. The column structure confines the decolorization process, eliminating the open operation problems of kettle-type mixing where decolorizer dust and odors can pollute the environment and create safety hazards.
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 process effectively decolorizes polyunsaturated fatty acids with high yield and quality, reduces waste and environmental pollution, and allows for continuous operation, making it suitable for large-scale production without compromising product quality.
Implementation Method 1
a polyunsaturated fatty acid feedstock or a polyunsaturated fatty acid solution is either passed directly through a fixed bed filler or recycled in the fixed bed filler
Implementation Method 2
A polyunsaturated fatty acid feedstock or a polyunsaturated fatty acid solution is either passed directly through a fixed bed filler
Implementation Method 3
a colorless or light-colored polyunsaturated fatty acid product is ultimately produced
Data Source
Figure 1
AI summary
The present invention relates to a fixed bed decolorization process for an polyunsaturated fatty acid, comprising a polyunsaturated fatty acid or a polyunsaturated fatty acid solution is either passed directly through a filler of the fixed bed or recycled in a filler of the fixed bed, a colorless or light-colored polyunsaturated fatty acid product is ultimately produced, at the same time, other than the color, other qualities of the polyunsaturated fatty acid remain unaffected. The decolorization process allows continuous operation or intermittent operation. The filler of the fixed bed comprises one or a mixture of activated carbon, diatomite, carclazyte, silicone and an ion-exchange resin. An upper or a middle or a bottom or a combination thereof is employed to feed a polyunsaturated fatty acid feedstock or a polyunsaturated fatty acid solution. The filler in the fixed bed can be used repeatedly. The filler can be reused after being washed when decolorization effects thereof become deteriorated or ineffective.