Fouling Deposition Characteristic by Variation of Coal Particle Size and Deposition Temperature in DTF (Drop Tube Furnace)
One of the major operation obstacles in gasification process is ash deposition phenomenon.In this investigation,experiment was carried out to examine coal fouling characteristics using a laminar DTF (Drop Tube Furnace) with variation of operating condition such as different coal size,and probe surface temperature.Four different samples of pulverized coal were injected into DTF under various conditions.The ash particles are deposited on probe by impacting and agglomerating action.Fouling grains are made of eutectic compound,which is made by reacting with acid minerals and alkali minerals,in EPMA (Electron Probe Micro-Analysis).And agglomeration area of fouling at top layer is wide more than it of middle and bottom layer.The major mineral factors of fouling phenomenon are Fe,Ca,and Mg.The deposition quantity of fouling increases with increasing particle size,high alkali mineral (Fe,Ca,and Mg) contents,and ash deposition temperature.
gasification fouling DTF minerals particle size fraction
Hueon Namkung Li-hua Xu Youngshin Jeon Hyungtaek Kim
Division of Energy Systems Research,Graduate School,Ajou University,Wonchon-dong,Yeongtong-gu,Suwon, Plant Engineering Center,IAE,Wonchon-dong,Yeongtong-gu,Suwon,443-749,Republic of Korea
国际会议
The 7th International Symposium on Coal Combustion(第七届国际煤燃烧学术会议)
哈尔滨
英文
170-174
2011-07-19（万方平台首次上网日期，不代表论文的发表时间）