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Analysis of the clinker formed in circulating fluidized bed boiler
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2000, v.13 no.1, pp.5-11
Kim,
K., Park,
H., Lee,
T., &
Jeong,
N.
(2000). Analysis of the clinker formed in circulating fluidized bed boiler. Analytical Science and Technology, 13(1), 5-11.
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Abstract
During the commissioning period in Tonghae thermal power plant which is the largest circulating fluidized bed boiler in the nation, a considerable amount of clinker was formed at FBAC and seal pot. Various attempts, for example, concentration analysis, surface phenomena, thermal characterization, and crystal structure of ash, bed sand, limestone, clinker, and mixture of each gradients have been studied to identify the causes of clinker formed in circulating fluidized bed boiler. As the results, the characterization of black particles in which separated from the clinker is more similar to that of bed sand, on the other hand, white particles are more similar to ash. In addition, the sintering temperature of sand is over <TEX>$1,200^{\circ}C$</TEX> and this temperature was decreased as limestone is added to bed material. The cause of clinker was proved that ash was sticked to molten or sintered sand or limestone in the area of high temperature in the circulating system.
- keywords
- clinker, circulating fluidized bed boiler, FBAC(fluidized bed ash cooler), sintering, mullite
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