One-Side Impregnated Filter Material for Liquid Separation
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current filter materials face a trade-off between high separation efficiency and service life, where increasing separation efficiency typically reduces service life, and vice versa, making it challenging to meet increasing purity requirements in industrial, food, medical, and pharmaceutical applications without increasing filter size or cost.
Innovation Solution
A filter material is developed with a binder applied on only one side, allowing the binder to penetrate at least half but no more than three-quarters of the material's thickness, maintaining high separation efficiency while extending service life by maintaining air permeability and porosity, suitable for filtering liquids and separating immiscible liquids.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the separation efficiency of filter material is increased to meet higher purity requirements, then the degree of separation improves, but the dust storage capacity and service life deteriorate
Solution Approach 1:
The filter material is divided into two distinct sides: an impregnated side with smaller pores for high separation efficiency, and a non-impregnated side with larger pores for dust storage. This segmentation allows each side to specialize in one function, resolving the contradiction between separation efficiency and service life.
Solution Approach 2:
Different regions of the filter material have different properties: the impregnated side has modified fiber properties with reduced pore size for separation, while the non-impregnated side retains original fiber properties with larger pores for dust capacity. This local differentiation enables both high separation efficiency and long service life simultaneously.
2Duration of action of stationary object
If the filter area is increased to maintain service life while separation efficiency increases, then the service life is preserved, but the size of the entire filter element increases
Solution Approach 1:
The filter material is divided into two distinct sides: an impregnated side with smaller pores for high separation efficiency, and a non-impregnated side with larger pores for dust storage. This segmentation allows each side to specialize in one function, resolving the contradiction between separation efficiency and service life.
Solution Approach 2:
Different regions of the filter material have different properties: the impregnated side has modified fiber properties with reduced pore size for separation, while the non-impregnated side retains original fiber properties with larger pores for dust capacity. This local differentiation enables both high separation efficiency and long service life simultaneously.
3Duration of action of stationary object
If multiple coordinated filter layers are used to meet high separation requirements with long service life, then the separation efficiency and service life are improved, but the thickness and cost of the entire filter material increase
Solution Approach 1:
Multiple filter functions (separation and dust storage) that would traditionally require separate layers are merged into a single dual-sided filter material. The impregnated side provides separation while the non-impregnated side provides dust capacity, eliminating the need for multiple coordinated layers and reducing overall thickness.
Solution Approach 2:
The filter material is a composite structure with two different regions: impregnated fibers with hydrophobic coating for separation and non-impregnated fibers for dust storage. This composite approach combines multiple functions within a single material layer, avoiding the thickness increase associated with multiple separate layers.
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 one-side impregnated filter material achieves a longer service life and equivalent separation efficiency compared to fully impregnated materials, with improved air permeability and porosity, effectively addressing the trade-off between separation efficiency and service life, and is suitable for immiscible liquid separation.
Implementation Method 1
the binder moves from the impregnated side to the opposite side penetrates at least half and at most three quarters of the thickness of the filter material
Implementation Method 2
When the finely dispersed water droplets hit hydrophilic, non-impregnated fibers, they are held there
Implementation Method 3
pushed through the impregnated, hydrophobic side of the filter material
Implementation Method 4
due to their higher density and gravity, the water drops flow downwards along the impregnated surface of the filter material
Data Source
AI summary
The invention relates to a filter material in particular for filtering liquids. The filter material is impregnated with a binder on only one side such that the opposite side is free of the binder and the content of the dried binder is 0.5 to 50 wt.% of the total weight of the filter material. Using the filter material according to the invention, a high degree of separation is achieved while maintaining a long service life. The invention further relates to a filter element which comprises the filter material according to the invention. Further aspects of the invention relate to the use of the filter material according to the invention in order to filter liquids and to a method for separating two non-mixable liquids, said liquids being conducted through the filter material according to the invention.