燃料化学学报2017，Vol.45Issue(3)：289-294,6.
不同灰化温度下生物质混煤灰的烧结特性研究
Effect of different ashing temperatures on the sintering characteristics of ash from combustion of coal and biomass blends
摘要
Abstract
Effect of ashing temperature on sintering behavior of ashes from combustion of coal and straw blends was investigated.Blends of a Chinese anthracite, Jincheng coal, and wheat straw were burned at three different temperatures.The resulting ash samples were then subjected to the sintering temperature measurement using a pressure-drop sintering device, morphological and mineralogical characterization with scanning electron microscope (SEM) fitted with X-ray energy dispersive spectroscopy (EDS) and X-ray diffractometry analyzer (XRD), respectively.For the same coal and biomass blends but different ashing temperatures, their sintering temperatures decrease in different extent.In addition, sintering temperatures of the blends under lower ashing temperature are lower than that under the higher ashing temperature.SEM imaging show that the texture of ash samples from lower ashing temperature is irregular, loose and more fibrous.The ashes under higher ashing temperature are mostly in spherical-shape, indicating ash melting has occurred during combustion.The XRD analysis reveals that blends of ash from Jincheng coal and straw under low ashing temperature has low sintering temperature due to more fluxing minerals, like K-containing mineral.The high sintering temperature of the ash blends depends on the Ca-containing minerals like anorthite with high melting temperature.关键词
生物质/煤/混烧/烧结温度/SEM-EDS/XRDKey words
biomass/coal/co-firing/sintering temperature/SEM-EDS/XRD分类
化学化工引用本文复制引用
景妮洁,祝红梅,李和平..不同灰化温度下生物质混煤灰的烧结特性研究[J].燃料化学学报,2017,45(3):289-294,6.基金项目
浙江省自然科学基金(LQ14E060004)资助 The project was supported by Zhejiang Provincial Natural Science Foundation of China (LQ14E060004). （LQ14E060004）
