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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Primary air fans provide the preheated Fluidizing air.
This returns to the furnace for recirculation. Some portion is lost in the ash during the operation and this has to be made-up.
What is CFBC boiler? – Thermodyne Engineering Systems
You are commenting using your Facebook account. At the bottom of the boiler furnace there is boler bed of inert material. What are the advantages? But the basic principles remain the same.
By continuing to use this website, you agree to their use. Different boiler manufacturers adopt different methods of cyclone separationthe fluidizing nozzles etc. You are commenting using your WordPress. Do not waste Energy on steam leakage in boiler. Hence the name Circulating Fluidized Bed combustion.
ISGEC | CFBC Boilers | Circulating Fluidised Bed Combustion Boilers
To start with the bed material is sand. If You are looking industrial chimney for a boiler, then You will Call Us: This is one way of burning pulverised coal in electricity generation plant. Menu Skip to content About Contact. The hot gases from the cyclone dehails to the heat transfer surfaces and go out of the boiler. Fluidized Bed At the bottom of the boiler furnace there is a bed of inert material.
The diagram below shows the schematic of a CFB boiler. Special design of the air nozzles at the bottom boileer the bed allows air flow without clogging. 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.
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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.
Air supply is from under the bed at high pressure. In the cyclone the heavier particles separate from the gas and falls to the hopper of the cyclone. This article series explains these issues. Fill in your details edtails or click an icon to log in: How does this technology work?
This lifts the bed material and the coal particles and keeps it in suspension. Fluidized Bed combustion is something similar to this.
At adequately high air speed, the bed acts as a fluid resulting in rapid mixing of the particles. Boilet adopts a process different from Pulverized Fuel where coal is milled to fine powder similar to talcum powder and fired. 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.
How Circulating Fluidized Bed Boilers Work?
Nozzles in the furnace walls at various levels distribute the Combustion air in the furnace. For high Sulphur coals Limestone addition to the bed material reduces SO 2 emissions.
Bed Material To start with the bed material is sand. Ash spouts in the furnace remove the ash from the bottom of the furnace. This is the Fluidized bed. To find out more, including how to control cookies, see here: From storage hoppers Conveyer and feeders transport the coal to feed chutes in the furnace. Thermodyne Boilers Manufacture small industrial Boilers more info visit: 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.
Start up is by oil burners in the furnace.