The "CETHAR FLUIDIX" is an atmospheric Bubbling Fluidised Bed (BFB) Combustion Boiler with water cooled, fin welded membrane wall combustion chamber and under bed fuel feeding system.

The boiler is designed for a variety of fuels such as Indian Coal, Imported Coal, Bio fuels such as Rice husk and Sawdust etc as main fuel for steam of high pressure and temperature.  FD fan supplies the required combustion/fluidization air for the boiler. Air is heated in the air heater and is distributed to the fluidized grid through a compartmentalized air box.  A part of combustion air is tapped from air heater outlet and further pressurized by a PA fan for pneumatic under bed fuel feeding.

The distributor plate is fitted with well proven and time tested air nozzles to distribute the fluidizing air from air box uniformly over the entire bed.  Bed tubes are immersed in the bed to maintain the required bed temperature.

The fuel from the bunker is fed pneumatically into the bed through a set of pocket feeder and drag chain feeder and mixing nozzles located below the bunker. The hot flue gas generated from the combustion chamber passes through convection superheater, boiler bank tubes, economizer, airheater and ESP. Furnace draft is maintained by FD and ID fans. Steam drum, boiler bank, mud drum (if provided), in-bed evaporator tubes, Down Comers, Riser etc forms part of evaporator system.