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Why do we need a Bag Filter?

As we all know, the air pollution norms are getting stricter with every day passing by. So it becomes quite obvious to install and commission an air pollution control device. One such air pollution control equipment is the Bag Filter . Bag Filter helps in separating the particulate matter from the flue gas coming out of the Boiler. Most common type of Bag Filter is Pulse jet type. Pulse jet bag filter operation Bag filter comprises an arrangement of Bags, made up of special fabric, capable of bearing the operating temperature of up to 220 degree Celsius. These bags are long, vertically fit upon a ring-like structure. This structure provides rigidity to the bags when inserted inside them, now every bag is arranged vertically in row/column fashion. The design of Bag Filter heavily relies on the Air to Cloth Ratio as per the composition (a type of fuel used) and the flow of flue gases. It is installed such its outlet is before the id fan flue gas inlet. Flue gas coming out of ...

6 MAJOR BOILER FEEDWATER IMPURITIES

1. HARDNESS (Ca++/Mg++)         Scale deposits in Steam Boiler inhibit heat transfer and thermal efficiency   2.TOTAL DISSOLVED SOLID(TDS)  Primming,   Foaming,   scale deposits in boiler   3. CARBON DIOXIDE  (CO 2 )            Corrosive, forms carbonic acid in condensate.   4. OXYGEN  (O 2 )             Corrosion & Pitting of boiler tubes , and turbine blades, failure of   steam  lines, and fittings     5. SILICA (SI)             Hard scale in boilers and cooling systems: turbine blade deposits. 6. HYDROGEN SULPHIDE (H 2 S)           Water smells like rotten eggs: Tastes bad & is corrosive to most metal