An integrated fluidized bed ash cooler for a fluidized bed boiler, particularly a circulating fluidized bed (CFB) boiler, employs at least two fluidized bed sections positioned in series along a solids flow path. The performance of a fluidized bed ash cooler was studied using a cold experiment bench. The air flow rate, particle size of the solids and air distributor type. A novel bottom ash cooler (BAC) called compound fluidized bed ash cooler (CFBAC) was developed in this paper. The CFBAC combined the major technical features of spouted bed and bubbling bed, and could achieve the selective discharge on the bottom ash.
We provide a wide range of bottom and bed ash cooling systems, built according to customer convenience. Fluidized bed Combustion (FBC) is a method of burning fuel, which is continually fed into a bed of inert material such as sand, silica, alumina or ash and/ or limestone. The performance of a fluidized bed ash cooler was studied using a cold experiment bench. The air flow rate, particle size of the solids and air distributor type are considered to be the key. United Conveyor Corporation has unparalleled experience and the highest number of reference installations for fluidized bed ash conveying systems.
Rotary ash coolers are widely used in circulating fluidized-bed (CFB) boilers for bottom ash cooling, attributed to their high efficiency and excellent reliability. Meanwhile, a new-type mixed-flow fluidized bed bottom ash cooler was successfully designed on the basis of the comprehensive investigation on the existing BAC s merits and drawbacks. The circulating fluidized bed (CFB) is a clean process with the ability to achieve lower emission of pollutants. Ash coolers are prone to foul the bed while the heat transfer tubes in fluidized bed are prone to erosion can be removed by the use of some fluidizing air.
What is the design criteria of CFBC boiler cyclone and bed ash cooler. A novel bottom ash cooler (BAC) called compound fluidized bed ash cooler (CFBAC) was developed in this paper. A small quantity of fluidizing air was needed for the cooling chambers to work in the bubbling bed state. The MAC M agaldi A sh C ooler is a unique system for dry extraction, air cooling and mechanical handling of bottom ash from pulverized coal-fired boilers. The bottom ash of circulating fluidized bed (CFB) boiler contains large amounts of physical heat. When low quality coals are used in these types of boilers, the ash content is normally more than 40 and the physical heat loss is approximately 3 if the bottom ash is discharged without cooling.