Coal Fired Cfbc Boiler Ash Recycling System

Coal fired CFBC boiler ash recycling system

Coal parameters such as heating value, moisture content, sulphur content, ash composition, and ash quantity are important in maintaining boiler rating, reliability, and performance. The absorption of nutrients by plants and the geological sediments/ conditions introduce non-combustible minerals to coal, which for combustion purposes are impurities. The combustion residue of this mineral matter is ash. Here we will introduce the coal fired CFBC boiler ( http://www.zgboilers.com/Products/dhx-circulating-fluidized-bed-steam-boiler.html ) ash recycling system.

Furnace, cyclone, and returned to the formation of three major components feeder boiler ash recycling system, a wind from the layout of the board in the water-cooled cloth hood air into the furnace at the bottom of the dense, so that the material flow of the furnace, high temperature materials and full mix of coal and limestone particles in the dense phase zone to complete combustion desulfurization process. Flow of large particles of suspended material is to a certain height, along the stream back to the bottom of the furnace water wall surrounding the dense, fine granular material were carried out the furnace flue gas through the variable cross-section of the cyclone is speed when imported flue , the high tangential flue gas into the cyclone within the high-speed rotation in the cyclone, the flue gas by the centrifugal force the quality of the larger solid particles are thrown to the cyclone wall, along the back wall down into the feeder , and the quality of the smaller solid particles with the flue gas through the cyclone at the top of the center of the tube, into the boiler convection shaft. Separator cyclone is with advanced and mature technology, with central tube bias structure, the total separation efficiency of up to 99%.

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