Presented at National Boiler Workshop – Introduction to CFBC Boilers by Satyanarayana Senapathi, VP Anjani Steels. ISGEC – CFBC boilers are easy to operate. ISGEC CFBC boiler has high residence time, fly ash recirulation, high turbulence and electrostatic precipitator type. Y Cube Engineered Solutions Private Limited offering CFBC Boiler in Goregaon East, Mumbai, Maharashtra. Get contact details, address, map on Indiamart.

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This requires only a crusher not a pulverizer. At adequately high air speed, the bed acts as a fluid resulting in rapid mixing of the particles. In the olden days blacksmiths used to heat the iron by placing it on a bed of coal.

You are commenting using your Facebook account. It adopts a cffbc different from Pulverized Fuel where coal is milled to fine powder similar to talcum powder and fired. Menu Skip to content About Contact.

Fill in your details below or click an icon to log in: But the basic principles remain the same. This article series explains these issues.

ISGEC | CFBC Boilers | Circulating Fluidised Bed Combustion Boilers

In coal fired boilers the ash from the coal itself will be the makeup material. Do not waste Energy on steam leakage in boiler. From storage hoppers Conveyer and feeders transport the coal to feed chutes in the furnace.


CFBC uses crushed coal of 3 to 6 mm size. Fluidized Bed combustion is something similar to this. Notify me of new comments via email.

CFBC Boiler

This bed material is fluidized by primary air a part of combustion air. What are the advantages? Bed is where the coal or fuel spreads. Special design of the air nozzles at the bottom of the bed allows air flow without clogging. The fluidised action promotes complete coal combustion at relatively low temperatures, and provides a means to transfer combustion heat efficiently from the bed to the steam tubes.

In the cyclone the heavier particles separate from the gas and falls to the hopper of the cyclone.

Circulating Fluidized Bed combustion gives the flexibility to burn a wide range of fuels with optimum efficiency and reduced emissions. Leave a Reply Cancel reply Enter your comment here To start with the bed material is sand.

Different boiler manufacturers adopt different methods of cyclone separationthe fluidizing nozzles etc. Cfbbc me on Twitter My Tweets. Air supply is from under the bed at high pressure.


For high Sulphur coals Limestone addition to the bed material reduces SO 2 emissions. When firing bio fuels with very low ash content sand will be the makeup bed material. You are commenting using your Twitter account. Bellows provide air to the coal from the bottom of the bed. How is it different? Some portion is lost in the ash during the operation and this has to be made-up. This returns to the furnace for recirculation.

This lifts the bed material and the coal particles and keeps it in suspension.

By continuing to use this website, you agree to their use. Circulation Fine particles of partly burned coal, ash and bed material are carried along with the flue gases to the dstails areas of the furnace and then into a cyclone. Secondary air fans provide pre-heated Combustion air. Author archive Author website. This site uses cookies.