Magnetic Filter With Paramagnetic Packing For High Capacity Separation
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Solution Overview
Problem
Magnetic filters used in refinery and chemical industries are inefficient due to low capacity and uneven contaminant capture, particularly with metal matrices that require external electromagnetic coils and lack uniform magnetic fields.
Innovation Solution
A magnetic filter design featuring a housing with vertically oriented non-magnetic holder sleeves and paramagnetic metal packing materials, generating a high-intensity, uniform magnetic field within the filter to efficiently capture both magnetic and non-magnetic contaminants without external coils, utilizing a compact design with a high contact surface area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If metal matrices are magnetized by external electromagnetic coils, then magnetic contaminants can be removed, but the filter capacity is low and contaminant capture is uneven
Solution Approach 1:
The filter is divided into multiple segments with individual permanent magnetic bars disposed within separate non-magnetic sleeves. Each magnetic bar segment independently generates a localized magnetic field, creating multiple contaminant capture zones throughout the filter. This segmentation enables uniform contaminant capture across the entire filter cross-section and significantly increases overall filter capacity compared to a single centralized magnetic source.
2Reliability
If external electromagnetic coils are used to generate magnetic fields, then magnetic contaminants can be attracted, but the device complexity increases
Solution Approach 1:
The invention extracts the magnetic field generation function from complex external electromagnetic coils and implements it using simple permanent magnetic bars. The permanent magnets are directly inserted into non-magnetic sleeves within the filter, eliminating the need for external power sources, insulated wire windings, and electrical connections. This extraction principle maintains reliable magnetic field generation while dramatically simplifying the overall device structure.
Solution Approach 2:
Permanent magnetic bars inherently generate their own magnetic fields without requiring external energy input or control systems. Each magnetic bar self-generates a stable magnetic field that continuously attracts magnetic contaminants as process fluid flows through the filter. This self-service characteristic eliminates the need for external electromagnetic coils, power supplies, and control circuitry, thereby reducing device complexity while maintaining reliable magnetic field generation.
3Ease of operation
If permanent magnetic bars are placed in non-magnetic sleeves, then magnetic contaminants adhere to sleeve surfaces, but the filter capacity is limited
Solution Approach 1:
The invention transitions from a two-dimensional surface capture mechanism to a three-dimensional capture system by distributing multiple permanent magnetic bars vertically and horizontally throughout the filter volume. Each magnetic bar in its non-magnetic sleeve creates a localized capture zone, and the collective arrangement of multiple bars establishes numerous magnetic field lines throughout the entire filter cross-section. This dimensional expansion dramatically increases the total contaminant capture capacity while preserving the ease of contaminant release when magnetic bars are removed from sleeves.
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 enables effective removal of magnetic and non-magnetic contaminants from industrial process streams, with a high void volume and surface area for efficient contaminant capture and easy cleaning, improving the overall filtration efficiency and capacity.
Implementation Method 1
means for generating a magnetic field within the packed compartment
Implementation Method 2
magnetic contaminants adhere to the exterior of the holder sleeves and to the exterior surfaces of the packing material
Data Source
AI summary
A high capacity magnetic filter for separating magnetic and non-magnetic contaminants from contaminated liquid streams includes a housing having (i) an interior region between the inlet and outlet for a process stream, (ii) a plurality of vertically oriented, elongated non-magnetic holder sleeves positioned within the interior region (iii) paramagnetic metal packing material that is randomly distributed in the interior region to form a packed compartment that has a void volume which is above 95 percent, and (iv) a device to generate a magnetic field within the interior region. Generation of a uniform magnetic field within the packed compartment magnetizes the holder sleeves and matrix of packing materials. The holder sleeves and matrix create a large surface area for collecting the contaminants.