Inert Powder Crystallization for Polyunsaturated Fatty Acid Grease
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current winterization processes for polyunsaturated fatty acid greases face challenges in efficiently crystallizing and separating solid fats, particularly for raw materials with low saturated fatty acid content, leading to incomplete precipitation, low separation efficiency, and economic inefficiencies due to remelted crystals and complex equipment designs.
Innovation Solution
A method involving the addition of a small amount of inert solid powder as crystal seeds during cooling crystallization, followed by a larger amount as a filter aid, facilitates efficient crystallization and separation of solid fats, allowing for their effective recovery and reuse, while maintaining the clarity of the polyunsaturated fatty acid grease.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional winterization process is used for polyunsaturated fatty acid grease with low saturated fatty acid content, then the crystallization and separation of solid fats is performed, but the crystallization is incomplete and separation efficiency is low
Solution Approach 1:
The patent introduces inert solid powder as an intermediary substance to facilitate crystallization and separation. The inert powder acts as a nucleation site and carrier for solid fat crystals, enabling complete crystallization and efficient separation even for greases with low saturated fatty acid content. This mediator resolves the contradiction by providing a physical framework that enhances both crystallization completeness and separation efficiency simultaneously.
Solution Approach 2:
The patent changes physical parameters including adding inert solid powder, adjusting temperature gradients, and controlling stirring speed to optimize crystallization. By modifying these parameters, the system achieves complete crystallization while maintaining high separation efficiency, resolving the contradiction between reliability and productivity.
2Reliability
If winterization crystallization is performed for extended period to ensure complete precipitation, then crystallization completeness improves, but processing time increases and economic efficiency decreases
Solution Approach 1:
The patent applies preliminary action by adding inert solid powder before crystallization begins. This pre-prepared nucleation framework enables rapid and complete crystallization without requiring extended processing time. The inert powder is prepared in advance and immediately available to facilitate crystal formation, resolving the contradiction between completeness and time consumption.
Solution Approach 2:
The inert solid powder serves as a mediator that accelerates the crystallization process while ensuring completeness. It provides immediate nucleation sites that eliminate the need for prolonged crystallization periods, thereby achieving both complete precipitation and reduced processing time simultaneously.
3Productivity
If filtration is performed to separate solid fats, then separation efficiency improves, but some crystals remelt and enter the filtrate reducing product yield
Solution Approach 1:
The inert solid powder acts as a protective intermediary during filtration. Solid fat crystals adhere to the inert powder particles, which prevent them from remelting and entering the filtrate. The inert powder forms a stable matrix that maintains crystal integrity during the filtration process, resolving the contradiction between separation efficiency and product yield.
Solution Approach 2:
The patent applies discarding and recovering by collecting the filter cake containing inert powder and adhered crystals, then heating to dissolve and filtering again to recover solid fat. This process retrieves crystals that might otherwise be lost, converting potential waste into recoverable product and resolving the contradiction between separation efficiency and yield loss.
4Productivity
If complex equipment designs are used to improve separation performance, then separation efficiency improves, but device complexity and cost increase
Solution Approach 1:
The inert solid powder serves as a simple chemical intermediary that replaces complex equipment requirements. By adding this inexpensive powder, the system achieves enhanced separation performance using standard filtration equipment, eliminating the need for complex specialized devices and resolving the contradiction between separation efficiency and equipment complexity.
Solution Approach 2:
The patent changes the chemical-physical parameters of the system by introducing inert powder, which fundamentally improves separation performance without requiring equipment modifications. This parameter change approach achieves high separation efficiency while maintaining simple equipment, resolving the contradiction between productivity and device complexity.
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 method significantly reduces winterization crystallization time, enhances crystal separation efficiency, and improves product yield by preventing remelted solids from entering the filtrate, resulting in a clearer final product and increased economic efficiency through the reuse of inert media.
Implementation Method 1
adding a small amount of inert solid powder as crystal seeds during cooling crystallization
Implementation Method 2
adding a larger amount as a filter aid, facilitates efficient crystallization and separation of solid fats
Implementation Method 3
heating to dissolve and then filtering the filter cake
Data Source
AI summary
A method of efficiently separating solid fat from polyunsaturated fatty acid grease (PFAG) comprises adding a small amount of inert material to the PFAG, and cooling crystallization, and then adding a certain amount of inert material under stirring, and filtering to obtain clarified PFAG, at the same time collecting a filter cake, heating and dissolving the filter cake, and then filtering, recovering a filtrate to obtain a solid fat. The method can be efficiently separated saturated and low-saturated fatty acids from PFAG. In the process, winterization crystallization time is short, crystallization is complete, the crystal separation is easy. It will not cause some solid fat melted and thus re-enter filtrate due to long separation and blowing dry in conventional process. The yield of final product is high up to 96.3%-98.2%. After winterization, a lipid clarity of PFAG is good, and no crystal precipitation would occur at 0° C. for 5 hrs.