Backflush Volume Segmentation for High Viscosity Fluid Filtration
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Solution Overview
Problem
Filtration systems face challenges in efficiently backflushing high viscosity fluids, such as heavy fuel oils, which hinders the filtration process and requires post-treatment of contaminated backflushed fluid, posing environmental hazards and increasing fuel consumption.
Innovation Solution
A control device with a control chamber and separating piston is used to adapt the post-treatment filtration process to the viscosity and type of contamination, allowing for efficient backflushing and treatment of backflush volumes by adjusting pressure and recirculating treated flushing oil, reducing waste and fuel consumption.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a piston accumulator with compressed gas is used to backflush high viscosity fluids, then the backflushing action becomes effective, but the backflush volume becomes contaminated and requires post-treatment
Solution Approach 1:
The system separates the backflush process into two distinct stages: a first backflush stage that handles initial contaminant removal, and a second backflush stage that processes the remaining volume. This segmentation allows the first stage to perform aggressive cleaning while the second stage handles the already-partially-cleaned fluid more gently, reducing overall contamination.
Solution Approach 2:
The system performs preliminary backflushing action in the first stage to remove the majority of contaminants before the second stage processes the remaining volume. By pre-cleaning the fluid in the first stage, the second stage receives less contaminated fluid, reducing the harmful effects of contamination in the final backflush volume.
2Ease of operation
If the backflush volume is discharged directly, then the system is simple to operate, but the contaminated fluid poses environmental hazards
Solution Approach 1:
The system automatically performs two-stage backflushing and recirculation without requiring manual intervention or complex external treatment systems. The controlled backflushing units and recirculation mechanism work autonomously to treat the backflush volume, maintaining ease of operation while eliminating environmental hazards through self-contained processing.
3Loss of energy
If treated flushing oil is recirculated to the unfiltrate side, then fuel consumption is reduced, but the system complexity increases
Solution Approach 1:
The system merges the treated backflush volume back into the unfiltrate side of the filtration system, combining it with the incoming fluid stream. This integration allows the recirculated oil to be reused in the filtration process, reducing the need for fresh fuel oil and minimizing fuel consumption while maintaining manageable system complexity through unified operation.
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
Ensures effective backflushing and treatment of high viscosity fluids, reducing environmental impact and fuel consumption by optimizing the filtration process and recirculating treated oil.
Implementation Method 1
The first and the second fluid compartment of the control chamber are advantageously separated by a separating piston
Implementation Method 2
A compressed gas, in particular in form of compressed air, is applied to the second fluid compartment at a predetermined working pressure
Implementation Method 3
the working pressure in the second fluid compartment can be adjusted to a value that is optimal for a post-treatment filtration process
Implementation Method 4
The filter material of the respective post-treatment filter element allows flow-through by a backflush volume under a predetermined pressure
Implementation Method 5
a control device for feeding the respective backflush volume in batches to an associated post-treatment filter element
Data Source
AI summary
A system for filtering fluids includes a primary filter (2) having at least one filter element that can be penetrated in one direction during the filtration process and can be penetrated in the opposite direction for a backflushing process. An aftertreatment device (36) is mounted downstream of the primary filter (2) for the backflushed quantities discharged by the primary filter to be processed and includes at least one filter chamber (11) that holds the backflushed quantities and that has a fluid inlet, a fluid outlet and at least one aftertreatment filter element (19). A control device (9) delivers one portion of the backflushed quantity at a time to the associated aftertreatment filter element (19).