燃料化学学报2017，Vol.45Issue(12)：1409-1416,8.
山西"两高"煤灰分对石灰石助熔机制影响的研究
Study on effect of Shanxi high ash content and ash fusion temperature coals on fluxing mechanism of limestone
摘要
Abstract
The floated coal samples with different ash contents were obtained by coal washing, and the effect of ash content on addition of fluxing CaCO3 was investigated. The results show that silica content and silicon to aluminum ratio ( Si/Al ) of ash decrease with decreasing ash content. The AFTs of coal ashes change with increasing CaCO3 addition. The additive CaCO3 content is closely related to the mineral formed at high temperatures and their contents. Furthermore, for the FH and SH coals after floatation, the viscosity of slag with CaCO3 addition exhibits a behavior of glass slag, and also has a large slagging temperature range. The properties of the floated coal ash slags with CaCO3 addition well meet the requirement of slag tapping in entrained flow gasifier. It is an effective way for Shanxi high ash content and ash fusion temperature coals to combine coal washing and CaCO3 adding to adjust the ash flow properties in entrained flow gasification.关键词
山西"两高"煤/洗选/灰分/CaCO3/灰熔点/灰黏温特性Key words
Shanxi high ash content and ash fusion temperature coals/coal washing/ash content/CaCO3/ash fusion temperatures/ash viscosity-temperature characteristics分类
化学化工引用本文复制引用
李怀柱,孔令学,白进,白宗庆,李文..山西"两高"煤灰分对石灰石助熔机制影响的研究[J].燃料化学学报,2017,45(12):1409-1416,8.基金项目
The project was supported by the Natural Science Foundation of China (21406254, 21476247), Joint Foundation of Natural Science Foundation of China and Shanxi Province (U1510201), Shanxi Province Science Foundation for Youths (2015021055) and Fundamental Research Funds for the Central Universities (222201717004).国家自然科学基金(21406254、21476247),国家自然科学基金委(NSFC)-山西煤基低碳联合基金(U1510201), 山西省青年科技研究基金(2015021055)和中央高校基本科研业务费专项资金(222201717004)项目资助 （21406254, 21476247）
