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Bag Filters

Bag Filters

Bag Filters are industrial dry-filtration systems designed for continuous particulate capture on process lines with heavy dust loading.

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Bag Filters
Bag Filters
Bag Filters

Ducon Pulse Air and Reverse Air type Baghouse Filters

MDSJ supplies pulse-air and reverse air type baghouse filters for industrial and utility applications. Over the years MDSJ has provided hundreds of successfully operating installations for a variety of industries, such as: coal, cement, steel, power, mining and chemical.

MDSJ's Bag Filters are state of the art, high efficiency, modular filters designed to handle gas volumes from several hundred to several thousand cubic meter per minute. All MDSJ Bag Filters are custom designed for optimum air-to-cloth ratios, longer bag life and higher particulate removal efficiencies.

For large power plant applications, MDSJ supplies reverse air baghouses utilizing 8-METER -long bags. MDSJ can provide bags with a wide choice of materials including: Polyester, NOMAX, Acrylic, Teflon, Ryton, fiberglass, or sintered metal. MDSJ baghouse can provide over 90% mercury removal from coal-fired boiler exhaust gases.and incinerator.

Operating principle

  • Dirty air enters the unit and passes through purpose-woven filter bags that capture the dust.
  • Particulates are held on the outside of the bags while clean air is sent to atmosphere or to a recovery line.
  • Once differential pressure reaches the set point, solenoid valves fire a brief burst of high-pressure air into each bag (the jet-pulse effect); the shock wave drops the dust cake into the hopper.

Advantages

  • High efficiency: up to 99.9% dust capture, including very fine particles.
  • Continuous operation: bag cleaning runs while production continues, minimizing downtime.
  • Low operating cost: long-life filter bags and optimized compressed-air consumption.
  • Modular design: expandable as capacity needs grow.
  • Compliance: meets emission limits with a safe margin.

Application areas

  • Cement and gypsum, iron-steel and metallurgy, food and feed plants.
  • Chemicals and paints, furniture and woodworking, pharmaceutical industry.
  • Mining crushing/screening, plastics and recycling lines.

Selection criteria

  • Air-to-cloth ratio, dust chemistry, operating temperature, and required airflow are evaluated together.
  • Bag media options: polyester, polypropylene, Nomex (for high temperature), and anti-static fabrics.
  • Pulse-valve count, hopper discharge layout, and maintenance access shape long-term field performance.

Frequently Asked Questions

Is a jet-pulse filter the same as a baghouse?

Baghouse is the broader family term; jet pulse is one of the most common automatic-cleaning architectures within that family.

Which bag media should I choose?

Polyester or polypropylene for standard temperatures, Nomex for high-temperature duty, and anti-static fabric for combustible-dust risks.

When does the system clean itself?

When differential pressure reaches the set point, solenoid valves automatically trigger pulse cleaning — without stopping production.

Quick Info

Filter bags are cleaned automatically with compressed-air pulses — production never stops
Captures up to 99.9% of dust, including the finest particles
Modular design grows with capacity needs

HTML Engineering Resources

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Jet Pulse Filter page Kiln-dust reference project Cement blog series All engineering resources

Catalogs

MDSJ Product Catalog
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