A bag filter is a filter dust collector that is primarily used for collecting dust and solid particles from exhaust gases in industrial processes. Depending on the temperature and the composition of the exhaust gases a suitable filter (filter bag) can be selected and used. It has the advantage of being able to collect submicron particles which cyclone separators cannot.
A bag filter, in simple terms, is similar in structure to a vacuum cleaner. The system filters the dust-laden gas using a filter (filter bag) and only clean gas is discharged.
The filter media are made of fibres such as polyester, heat-resistant nylon and glass fibre and are chosen based on the properties of the gas and dust.
If a lot of dust is adhered to the surface of the filter, the dust-collecting capacity will be reduced. Therefore, when the dust-collecting capacity begins to decline, backwashing (pulse jet) is used to remove the adhered dust. The brushed dust is collected in the dust box and is discharged periodically.
