The air pollution control division of georg fischer disa limited [gfd] designs, engineers, manufacturers and supplies air pollution control equipment in india. The captured dirty gas is led to the dirty air compartment from top by way of the dirty air inlet and distribution manifold. The gas travels downwards through the filter cassettes lined up in rows and then into the clean air compartment. During dust collection, the filter cassettes undergo automatic cleaning by a reverse airflow system. A cleaning air fan delivers the required air through a moving cleaning nozzle via a flexible hose. During cleaning the cleaning air nozzle always covers three columns of cassette openings at one time and then the column in the middle receives the cleaning air without any dust drawn from the two neighbouring cassettes. To continue, the cleaning nozzle moves towards the next slot by an electro mechanically indexing device. Gtfsl filter consists of a dirty air inlet and distribution manifold, a dirty air compartment containing the filter cassette, a clean air compartment, a cleaning air nozzle, a drive unit, a cleaning air fan located on the top, a dust collection hopper with dust disposal equipment, support structure and platform.
