Recovery of particulate matter from exhaust gas is vital for any industry from two aspects

To avoid pollution problems

Recovery of finished product-increasing the plant yield

For recovering particulate matter different options available are – Cyclones, Venture, scrubbers, bag filters, electrostatic precipitators etc.

The dust-laden air enters the bag filter bustle.

The air is uniformly distributed avoiding channeling.

Initially a coat of material forms on the bags. Subsequently, the coat acts as the filtering medium.

The dust is accumulated on filter elements while the air passes thorough the filter bags from outside to inside.

The accumulated powder is dislodged from the bags by reverse pulse-jet air intermittently.

The dislodged powder falls on bottom cone and is discharged through powder discharge valves.

The dust free air is sucked by induced draft fan and is exhausted to atmosphere.

Knockers are provided on conical portion especially for sticky/hygroscopic materials.