Function Of IBD And CBD In Boiler ! What is blowdown & why it is required? [bJ0TcT4BxWO]
FUNCTION OF IBD AND CBD IN BOILER ! What is blowdown & why it is required?
Boiler blowdown is the intentionally removal of water from the boiler to avoid the concentration of impurities during the continuous evaporation of steam. It prevents scale formation inside the boiler. Its purpose is to control boiler water parameters within prescribed limits. It is of 2 types
1. Continuous (Surface) Blowdown: It utilizes a calibrated valve and a blowdown tap near the boiler water surface. It continuously takes water from the top of the boiler at a predetermined rate to reduce the level of dissolved solids.
2. Periodic (Manual or Bottom) Blowdown OR IBD ( Intermittent Blow Down ): The manual blowdown take-off is usually located in the bottom of the lowest boiler drum where any sludge formed would tend to settle.
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