In a Reverse-air bag-house (RABH), the bags are fastened onto a cell plate at the bottom of the baghouse and suspended from an adjustable hanger frame at the top. Dirty gas flow normally enters the baghouse and passes through the bag from the inside, and the dust collects on the inside of the bags.
Reverse-air baghouse are compartmentalized to allow continuous operation. Before a cleaning cycle begins, filtration is stopped in the compartment to be cleaned. Bags are cleaned by injecting clean air into the dust collector in a reverse direction, which pressurizes the compartment. The pressure makes the bags collapse partially, causing the dust cake to crack and fall into the hopper below. At the end of the cleaning cycle, reverse airflow is discontinued, and the compartment returns to the main stream.
The flow of the dirty gas helps maintain the shape of the bag. However, to prevent total collapse and fabric chafing during the cleaning cycle, rigid rings are sewn into the bags at intervals.
Reverse Air-Baghouse system is used where the volumes of the gas handled are huge.
Ecomak has provided Reverse Air Baghouse for the last three decades. The first ever project in company’s history was for a Reverse Air Baghouse catering to 1,00,000 Am3/hr capacity. Ecomak can provide Reverse Air Baghouse upto 30,00,000 Am3/hr.
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