Maximizing Efficiency and Compliance with Advanced Industrial Bag Filter Systems
Their system operated at only 35% of its designed capacity. After TNBi replaced their existing bag filter with a custom-designed unit optimized for pressure, airflow, and filter area, capacity increased to 75% – a 50% boost. The result: no choking, maintenance time reduced by 85%, and stable fan operation.
This outcome came from matching the right industrial bag filter system type to the specific application, not just replacing equipment. As a bag filter manufacturer in Pune, we’ve learned that successful dust collection efficiency starts with understanding which filter technology fits your dust profile.
Three Types of Industrial Bag Filter Systems
TNBi offers three distinct bag filter technologies, each engineered for specific industrial applications:
Vent Filter :
Filters dust or particles from air escaping through vents, usually from silos, tanks, or vessels. Prevents dust emissions during material transfer or pneumatic conveying with 99.9% filtration efficiency.
ATEX Compliant Bag Filter :
Dust collector designed for combustible or hazardous environments, compliant with ATEX directives. Ideal for fine dust in metalworking, hazardous powder applications, and combustible dust handling.
Cartridge Filter :
Compact, high-efficiency dust collector using pleated filter cartridges. Ideal for fine dust in metalworking, welding, or powder applications.
Understanding the differences helps manufacturers select the appropriate technology rather than defaulting to standard bag filters that may not suit their specific requirements.
When Vent Filters Are the Right Choice
Vent Filter systems address a specific emission source often overlooked: air displacement from silos, tanks, and vessels during filling or material transfer. These aren’t continuous-duty dust collectors; they’re designed for intermittent, high-velocity discharge events.
Applications include:
- Silo filling operations where displaced air carries fine dust
- Tank venting during material loading
- Pneumatic conveying system discharge points
- Batch material transfer vents
Vent filters deliver 99.9% filtration efficiency in compact housings that mount directly on vessels. They’re customizable for different dust handling requirements and integrate with existing equipment without extensive ductwork modifications.
If your emission source is a continuous process dust rather than intermittent venting, standard bag filters or cartridge systems are more appropriate.
ATEX Compliant Bag Filter for Combustible Dust
When handling combustible dust, aluminum powder, pharmaceutical intermediates, food processing fines, or certain polymer dusts, standard filtration creates explosion risks. This is where ATEX-compliant bag Filter systems become necessary.
ATEX compliance addresses safety through specific design features:
- Explosion vents for rapid pressure relief
- Explosion isolation prevents flame propagation
- Antistatic design eliminating static discharge ignition
- Appropriate material selection for the hazardous environment
TNBi’s ATEX bag filters operate at temperatures up to 850°C and pressures up to 33 bar. Multi-module designs handle high gas flow rates while maintaining compact configurations. Material options include SS304, SS316, Duplex, MS/CS, and Hastelloy C-22 based on chemical profile and corrosive conditions.
Key applications include:
- Grinding and milling dust collection
- Dry powder handling and conveying
- Boiler and furnace emission control
- Product recovery systems in the paint, pigment, and pharma industries
- Process dust control from mixing, blending, and drying operations
Pulse-jet automatic cleaning maintains filter performance and extends filter life without manual intervention.
Cartridge Filter Systems for effective dust control
Cartridge Filter systems use pleated filter cartridges providing a large filtration area in compact housings. This design delivers 99.9% dust collection efficiency while requiring less floor space than traditional bag filters.
Operating specifications:
- Temperature range up to 180°C
- Pressure capability up to 33 bar (vacuum to positive pressure)
- Horizontal or vertical layout options based on available space
- Multi-module design for high gas flow rates
Material of construction options – FRP, PP, PVC, PVDF, PTFE, ECTFE, PFA, SS304, SS316, Duplex, MS/CS, and Hastelloy C-22.
Cartridge filters work well in:
- Metalworking and welding (captures fumes, sparks, fine metal dust)
- Abrasive blasting (controls airborne particles)
- Powder processing (food, pharmaceutical, chemical powders)
- General industrial fine dust collection
Like ATEX systems, cartridge filters use pulse-jet automatic cleaning for continuous operation with minimal maintenance.
Common Challenges These Systems Address
“Too much downtime due to manual dust removal” : Automated pulse-jet cleaning enables continuous operation without process interruption.
“Space constraints in plant layout” : Cartridge filters maximize filter area in compact housing. Multi-module designs scale to requirements without excessive footprint.
“Bag filters choking frequently” : When used as secondary filtration after cyclone separators, bag filters handle lower dust loads, reducing choking.
“Need explosion protection for combustible dust” : ATEX compliance provides documented safety measures for hazardous dust applications.
Material Selection Based on Your Environment
Both ATEX and cartridge systems offer extensive material options because the operating environment matters as much as dust characteristics.
For corrosive chemical applications: SS304, SS316, Duplex, or Hastelloy C-22. For specific chemical compatibility: FRP, PP, PVC, PVDF, PTFE, ECTFE, PFA. For standard non-corrosive environments: MS/CS
The polymer plant case study used customized MOC selection matched to their specific dust and temperature profile, contributing to the successful capacity increase and maintenance reduction.
Making the Right Selection
As a bag filters manufacturer in Pune, we size systems based on actual dust characteristics, temperature conditions, gas flow rates, and available space—not just catalog capacities.
Ready to address bag filter choking, reduce downtime, or implement ATEX-compliant dust collection? Share your dust type, gas flow rate, temperature, and emission requirements. We’ll specify the appropriate bag filter type for your application.