The mineralogy, morphology and sintering characteristics of ash deposits on a probe at different temperatures during combustion of blends of Zhundong lignite and a bituminous coal in a drop tube furnace
The mineralogy, morphology and sintering characteristics of ash deposits on a probe at different temperatures during combustion of blends of Zhundong lignite and a bituminous coal in a drop tube furnace
复制标题
DOI：
10.1016/j.fuproc.2016.04.021
复制
发表时间：
2016-08-01
影响因子：
7.5
通讯作者：
Zhang, Dongke
中科院分区：
文献类型：
--
作者：
Li, Jianbo;Zhu, Mingming;Zhang, Dongke
本文研究了准东褐煤（ZL）与澳大利亚烟煤（AB）混煤在不同温度下燃烧时在空冷探头上形成的积灰物。将具有各种AB比率的共混物在落管式炉中在空气中在1400 ° C下燃烧，并且收集在保持在500 ° C、600 ° C、700 ° C和750 ° C下的探针顶表面上形成的灰分沉积物，并使用XRD和SEM-EDS表征其矿物学、形态和元素组成。还测定了灰沉积物的粒度分布和烧结温度。在500摄氏度的探头温度下，ZL灰存款主要是熔融矿物，其中大量的细颗粒（
Ash deposits formed on an air-cooled probe at different temperatures during combustion of coal blends of a Zhundong lignite (ZL) and an Australian bituminous (AB) were studied in the present work. The blends with various AB ratios were combusted in a drop tube furnace in air at 1400 degrees C, and the ash deposits formed on the probe top surface maintained at 500 degrees C, 600 degrees C, 700 degrees C, and 750 degrees C, were collected and characterised using XRD and SEM-EDS for their mineralogy, morphology and elemental composition. The size distributions and sintering temperatures of the ash deposits were also determined. At the probe temperature of 500 degrees C, the ZL ash deposit was dominated by fluxing minerals where significant amounts of fine particles (