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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Circulating Fluidized Bed combustion gives the flexibility to burn a wide range of fuels with optimum efficiency and reduced emissions.

CFBC Boiler

What are the advantages? Circulation Fine particles of partly burned coal, ash and bed material are carried along with the flue gases to the upper areas of the furnace and then into a cyclone. Menu Skip to content About Contact. Primary air fans provide the preheated Fluidizing air. Thermodyne Boilers Manufacture small industrial Boilers more info visit: You are commenting using your WordPress. For high Sulphur coals Limestone addition to the bed material reduces SO 2 emissions.

This bed material is fluidized by primary air a part of combustion air. The coal is burnt in a bed of hot particles maintained in flowing air. From storage hoppers Conveyer and feeders transport the coal to feed chutes in the furnace. This site uses cookies. When firing bio fuels with very low ash content detalls will be the makeup bed material.


In the cyclone the heavier particles separate from the gas and falls to the hopper of the cyclone. You are commenting booler your Facebook account.

Ash spouts in the furnace remove the ash from the bottom of the furnace. Bed is where the coal or fuel spreads. Secondary air fans provide pre-heated Combustion air. This article series explains these issues. But the basic principles remain the same.

Fluidized Bed combustion is something similar to this. To find out more, including how to control cookies, see here: Leave a Reply Cancel reply Enter your comment here Blog Statshits.

How Circulating Fluidized Bed Boilers Work?

Different boiler manufacturers adopt different methods of cyclone separationthe fluidizing nozzles etc. The diagram below shows the schematic of a CFB boiler.

This returns to the furnace for recirculation. In the olden days blacksmiths used to heat the iron by placing it on a bed of coal.

Author archive Author website. This is one way of burning pulverised coal in electricity generation plant. Start up is by oil burners in the furnace. This lifts the bed material and the coal particles and keeps it in suspension.

ISGEC | CFBC Boilers | Circulating Fluidised Bed Combustion Boilers

By continuing to use this website, you agree to their use. Bellows provide air to the coal from the bottom of the bed.

CFBC uses crushed coal of 3 to 6 mm size. Fluidized Bed At the bottom of the boiler furnace there is a bed of inert material.


At adequately high air speed, the bed acts as a fluid resulting in rapid mixing of the particles. To start with the bed material is sand.

Dettails in the furnace walls at various levels distribute the Combustion air in the furnace.

How Circulating Fluidized Bed Boilers Work?

This requires only a crusher not a pulverizer. Air supply is from under the bed at high pressure.

Fill in your details below or click an icon to log in: Follow me on Twitter My Tweets. Fine particles of partly burned coal, ash and bed material are carried along with the flue gases to the upper areas of the furnace and then into a cyclone. The coal combustion takes place in this suspended condition. Special design of the air nozzles at the bottom of the bed allows air flow without clogging. It adopts a process different from Pulverized Fuel where coal is milled to fine powder similar to talcum powder and fired.

The concentration of ash is dependent of coal ash mineral matter content and ash mineral matter goes along with flue gases out of the boiler.