In a Reverse Pulse Jet baghouse or simple known as pulse jet baghouse, bags are supported by a metal cage, which is fastened onto a laser cut tubesheet plate at the top of the baghouse. Dirty gas enters from the bottom of the baghouse and flows from outside to inside the bags. The metal cage prevents collapse of the bag. This filters the dirty gas which captures the dusty gas particles on the outer surface of the bags.
Bags are cleaned by a short burst of compressed air injected through a common air manifold over a row of bags. The compressed air is accelerated by a venturi nozzle mounted at the reverse-jet baghouse top of the bag. Since the duration of the compressed-air burst is short (generally, less than 0.1seconds), it acts as a rapidly moving air bubble, traveling through the entire length of the bag and causing the bag surfaces to flex. This flexing of the bags breaks the dust cake, and the dislodged dust falls into a collection hopper below.
Pulse Reverse-jet dust collectors can be operated continuously and cleaned without interruption of flow because the burst of compressed air is very small compared with the total volume of dusty air through the collector. The short cleaning cycle of reverse-jet collectors reduces recirculation and redeposit of dust. This cleaning system works with the help of sequential timer or PLC based panel attached to the fabric filter. This timer indicates the solenoid valve to inject air to the blow pipe.
Online baghouse systems are used in applications such as- Industrial Boiler Exhaust flue gas, material handling systems, capturing nuisance dust in plants amongst a few of the many applications.
ECOMAK have supplied online pulse-jet baghouses with volumes ranging upto 1,00,000 Am3/hr and more for a wide variety of applications ranging from milk powder to uranium ore.