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. Menu Skip to content About Contact. 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.

Author archive Author website. At the bottom of the boiler furnace there boier a bed of inert material.

Detalis coal fired boilers the ash from the coal itself will be the makeup material. Different boiler manufacturers adopt different methods of cyclone separationthe fluidizing nozzles etc. Leave a Reply Cancel reply Enter your comment here Some portion is lost in the derails during the operation and this has to be made-up. Bed Material To start with the bed material is sand.

CFBC uses crushed coal of 3 to 6 mm size. To boilrr with the bed material is sand. For high Sulphur coals Limestone addition to the bed material reduces SO 2 emissions. This returns to the furnace for recirculation.


Special design of the air nozzles at the bottom of the bed allows air flow without clogging. If You are looking industrial chimney for a boiler, then You will Call Us: To find out more, including how to control cookies, see here: The coal combustion takes place in this suspended condition. Circulating Fluidized Bed combustion gives the flexibility to burn a wide range of fuels with xfbc efficiency and reduced emissions.

CFBC Boiler

Fine particles of partly burned xetails, ash and bed material are carried along with the flue gases to the upper areas of the furnace and then into a cyclone. But the basic principles remain the same. This is the Fluidized bed. Air supply is from under the bed at high pressure. This site uses cookies. Fluidized Bed combustion is something similar to this. This article series explains these issues.

How Circulating Fluidized Bed Boilers Work?

At adequately high air speed, the bed acts as a fluid resulting in rapid mixing of the particles. In the cyclone the heavier particles separate from the gas and falls to the hopper of the cyclone.

Bellows provide air to the coal from the bottom of the bed. This is one way of burning pulverised coal in electricity generation plant. Hence the name Circulating Fluidized Bed combustion. Email required Address never made public.

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ISGEC | CFBC Boilers | Circulating Fluidised Bed Combustion Boilers

Primary air fans provide the preheated Fluidizing air. In the olden days blacksmiths used to heat the iron by placing it on a bed of coal. It adopts a boilfr different from Pulverized Fuel where coal is milled to fine powder similar to talcum powder and fired. The coal is burnt in a bed of hot particles maintained in flowing air. Fill in your details below or click an icon to log in: Start up is by oil burners in the furnace.


Secondary air fans provide pre-heated Combustion air. Nozzles in the furnace walls at various levels distribute the Combustion air in the furnace. How is it different? This bed material is fluidized by primary air a part of combustion air.

How does this technology work?

Notify me of new comments via email. The diagram below shows the bboiler of a CFB boiler. Ash spouts in the furnace remove the ash from the bottom of the furnace.

The hot gases from the cyclone pass to the heat transfer surfaces and go out of the boiler. From storage hoppers Conveyer and feeders transport the coal to feed chutes in the furnace.

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