Analysis into Abnormal Factors Affecting the Ash Discharge Amount of Thermal Power Plant

Abstract:

An ash yield experiment and a coal ash component analysis with the same coal sample at different temperatures showed that when a coal sample burned in a boiler furnace whose temperature was higher than 815 ° C, part of the salts (eg, sulfate) and oxides (eg, SO3) would continue to be decomposed, resulting in the actual ash yield of the coal sample decreasing compared with the theoretical ash discharge rate. At the same time, the analysts pointed out that the moisture loss and its representative defects of the as-fired coal sampling machine system, the dust removal efficiency fluctuation of the electrostatic precipitator, and the measurement deviation of the as-fired coal quantity also caused the actual ash discharge rate to be on is low side.

• Periodical: Advanced Materials Research (Volume 664)
• Pages: 1012-1017
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.664.1012
• Online since: February 2013
• Authors: Gang Chen, Wei Su, Tian Shen Chen
• Keywords: Abnormal, Analysis, Ash Discharge Amount, Thermal Power Plant

References

[1] GB/T19494. 3-2004 Mechanical Sampling of Coal - Part III: Precision Determination and Bias Test.

[2] Cao Zhangwu's Thermal Power Plant's Coal Quality Monitoring and Detection Technology [M], Beijing, China Standard Press, 2010, P164.

[3] Xu Peiyao's Thermal Power Plant Applied Chemistry [M], Beijing, China Electric Power Press, 2007, P194.