Bag Filter Cleaning via Gas Pressure Surge
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Solution Overview
Problem
Existing dryer systems face challenges in cleaning bag filters efficiently, particularly when dealing with moist drying air with high humidity, as particles adhere strongly to the filter material, leading to reduced filter performance and labor-intensive manual cleaning, which can be hazardous and shorten the filter's lifespan.
Innovation Solution
A method involving a gas pressure surge is applied to the clean gas side of the bag filter to detach filtration particles, using a pulse of compressed air to reverse the flow direction and expand the filter fabric, effectively removing particles without manual intervention, even at high humidity levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual cleaning using bobbin bobbins is used to clean bag filters, then the filter material can be cleaned, but the service life of the bag filters is shortened and labor time increases
Solution Approach 1:
The patent replaces manual mechanical cleaning with an automated pneumatic cleaning system. A gas pressure surge is applied to the clean gas side of the bag filter, generating a pressure wave that propagates through the filter material to detach filtration particles automatically, eliminating the need for manual mechanical cleaning and reducing cleaning time while preserving filter material life
Solution Approach 2:
The bag filter cleans itself through the pneumatic pressure surge mechanism. The gas pressure applied to the clean gas side creates a pressure wave that automatically detaches particles from the raw gas side without requiring external manual intervention, enabling the system to maintain itself
2Productivity
If manual cleaning is performed on bag filters, then particles can be removed, but the operation becomes labor-intensive and potentially hazardous
Solution Approach 1:
The patent replaces manual mechanical cleaning operations with an automated pneumatic system. Gas is introduced through injection nozzles to create pressure surges that automatically detach and remove filtration particles, transforming a labor-intensive manual process into an automated operational sequence that improves productivity while simplifying operation
Solution Approach 2:
The invention uses pneumatic principles to clean the bag filter. Compressed gas is introduced through injection nozzles to create pressure surges and waves that detach particles from the filter material, using gas dynamics instead of manual mechanical contact to achieve cleaning with higher efficiency and simpler operation
3Productivity
If compressed air is used for cleaning, then particle removal is effective, but the system complexity increases
Solution Approach 1:
The patent uses pneumatic pressure surges to effectively remove particles from the bag filter. By introducing compressed gas through injection nozzles, the system creates pressure waves that detach filtration particles efficiently, achieving high particle removal effectiveness through pneumatic mechanisms
Solution Approach 2:
The cleaning process uses periodic gas pressure surges rather than continuous action. Gas is introduced in pulses through the injection nozzles, creating sequential pressure waves that effectively detach particles over time, achieving thorough cleaning through repeated periodic action rather than complex continuous mechanisms
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 allows for efficient and quick cleaning of bag filters in dryers operating with moist raw gases, reducing labor and stress on the filter material, while ensuring effective particle removal and maintaining filter performance.
Implementation Method 1
a gas pressure surge is applied at least once to a clean gas side (13) of the bag filter (10), in order to detach filtration particles (11)
Implementation Method 2
bag filters are often used in known dryers, which are designed as large filters and can be several meters long
Data Source
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AI summary
The invention relates to a method for cleaning a filter system (1) of a dryer (2), wherein the filter system (1) comprises at least one bag filter (10) and wherein, in order to detach filtration particles (11) adhering to a raw gas side (12) of the bag filter (10) and obtained by filtering raw gas (ROG) with a relative humidity of at least 80%, a clean gas side (13) of the bag filter (10) is subjected to a gas pressure pulse (GSP). The invention further relates to a method for drying a material to be dried (TG) and to a filter system (1) for a dryer (2) and to a dryer (2) with a filter system (1).