煤气化炉渣的高温物相组成演变与黏温特性  

PHASE COMPOSITION EVOLUTION AND VISCOSITY-TEMPERATURE CHARACTERISTICS OF GASIFICATION SLAGS AT HIGH TEMPERATURE

作　　者：帅航 尹洪峰[1] 袁蝴蝶[1] 陈金学[1] 

机构地区：[1]西安建筑科技大学材料与矿资学院,西安硕士生710055

出　　处：《煤炭转化》2015年第3期44-48,共5页Coal Conversion

基　　金：国家自然科学基金-煤炭联合基金资助项目(U1261118);陕西省榆林市产学研合作项目

摘　　要：采用X射线衍射分析、等离子体原子发射光谱(ICP-AES)分析和炉渣灰熔融性分析等方法研究了五种气化炉渣的化学组成、相组成、高温相组成、熔融温度和高温黏度;并通过高温熔融淬冷及FactSage软件模拟探究不同温度下炉渣物相组成演变及高温黏度变化情况.结果表明,在高温情况下,由于化学组成不同五种气化炉渣形成的物相有所差异;且随着温度的升高,炉渣逐渐熔融为非晶相.通过软件模拟的数值结果与实验结果基本保持一致,即利用FactSage绘制的CaO-Al2O3-SiO2三元相图和黏温曲线可以很好地解释气化炉渣的高温相组成变化规律及黏温特性.X-ray powder diffractometry, ICP-AES and slag melting property deteminator were used to investigate chemical composition, phase composition, high-temperature phase composition, fusibility and viscosity-temperature characteristics of five kinds of gasification slags, and phase composition evolution and the changes of viscosity-temperature were studied by quenching at high temperature and simulating of FactSage. The results show that the main chemical composition of gasification slags are SiO2, Al2O3, CaO, Fe2O3 and residual carbon. Under high temperature conditions, phases of five different gasification slags vary because of the difference of the chemical composition. As the temperature rises, molten slags are turned into amorphous phase gradually. The measured value and calculated value of slag viscosity are basically consistent, CaO-A1203-SiO2 ternary phase diagrams and viscosity-temperature curve drawn by phase diagram of FactSage can be well use to explain the high-temperature phase evolution and viscosity-temperature characteristics of gasification slag.

关 键 词：煤气化炉渣 酸碱比 FactSage 黏温特性 物相组成 

分 类 号：TQ546[化学工程—煤化学工程] K784[历史地理—历史学]