Aswathi Industries Ltd

Bag Filter

Bag Filter

PULSE JET BAG FILTER

The Bag House/Bag Filter is generic name of Air Pollution Control Equipment. It is designed around the use of engineered fabric, filter tubes, envelopes or cartridges in capturing dust, separating dust or filtration process. AIL provides reliable and highly efficient Bag Filters and Bag House systems.

The dust laden gas enters through inlet nozzle and spreads all over the entire cross section of the bag filter. The gas moves up & passes through the bags, enters the clean air plenum through the top open end of the bags. During the passage of the gases through the fabric, the dust is retained on the outside surface of the bags. As the filtration proceeds the thickness of the dust layer on the fabric surface increases resulting in increase in pressure drop across the fabric. This necessitates the cleaning of the bags. Since the air flow is from outside to inside, the bags tend to collapse and are held by the wire cages, whose shape they acquire. The compressed air passing through the solenoid valves injects air at very high velocity for a short duration. This produces a shock wave causing the bag to expand and dislodging the dust cake which falls into the hopper. This unit is generally meant to operate with a pressure differential of 100-125 mmWG.

ADVANTAGES OF AIL PULSE JET BAG FILTER

• Easy installation – Depending on size, unit is shipped fully assembled or in PANEL form for quick and easy field erection, low field labor cost. Provides design flexibility to address site-specific arrangement.
• Enhanced Pulse System Design – Improved cleaning efficiency. Reduced Pressure loss. Reduces compressed air use and power consumption.
• Quick Bag Replacements – Snap band arrangement of fixing filter bags and cages are designed for easy installation, quick replacement.
• Minimal Maintenance – No internal moving parts hence maintenance is reduced. Dust collector shutdown is minimized.
• Increased Bag life – Filter Bag life is enhanced by optimizing the bag cleaning mechanism and by reduced compressed air usage.
• On-line maintenance access – Eliminates forced outages for fabric filter maintenance. Clean side maintenance minimizes personnel exposure to fly ash, dust etc.
• Automated System – Periodic compressed air pulsing removes accumulated dust from the bags with cleaning frequency and duration adjusted by solid-state timers or PLC.

TYPICAL INDUSTRIAL APPLICATIONS

• Cement Plants
• Steel Plants
• Power Plants
• Incinerator
• Textile Industry
• Sugar Plants
• Paper Mills
• Coal
• Fly Ash
• Pharmaceutical
• Wood Working
• Material Recovery and many more