配煤对催化气化工艺中煤灰烧结行为影响研究  

Effects of coal blending on sintering characteristics of catalytic coal gasification processes

作　　者：毛燕东 刘雷[1] 李克忠 辛峰 MAO Yan-dong;LIU Lei;LI Ke-zhong;XIN Feng(State Key Lab of Coal-based Low Carbon Energy,Enn Technology&Development Co.Ltd.,Langfang 065001,China;School of Chemical Engineering and Technology,Tianjin University,Tianjin 300072,China)

机构地区：[1]新奥科技发展有限公司煤基低碳能源国家重点实验室,河北廊坊065001 [2]天津大学化工学院,天津300072

出　　处：《高校化学工程学报》2019年第6期1424-1431,共8页Journal of Chemical Engineering of Chinese Universities

基　　金：国家科技支撑计划(2009BAA25B00);国家重点基础研究发展规划(2011CB201305)

摘　　要：针对易结渣煤种,研究不同配煤方式对煤灰熔融特性的影响,在催化气化工况气氛下利用压差法烧结温度测定实验装置对各煤灰进行初始烧结温度测试,并结合X射线衍射(XRD)及Factsage热力学软件计算结果表征分析煤灰的相关物理和化学变化,推测灰中矿物质间的反应及矿物的转变,研究矿物质变迁规律,揭示缓解结渣机理。结果表明,通过将高灰熔点、高硅铝含量煤种同易结渣煤种混配可缓解易结渣煤种的结渣问题,同高灰熔点煤混合可有效提高易结渣煤种灰熔点;混煤工艺不同,对灰熔点及烧结温度影响各异,这主要与催化剂在煤质上分布、催化剂存在形式不同及其与不同煤种中矿物质作用不一有关。Effects of coal blending on ash fusion of easy-slagging coal were systematically investigated. A pressurized pressure-drop measuring device was used to determine the effects of coal blending on ash sintering temperature under catalytic coal gasification atmosphere. An X-ray diffractometer(XRD) combined with Factsage software were used to predict the reactions happened among minerals, mineral transformation and slag formation for revealing the mechanism of slag resistance. The results show that the sintering temperature of Wang Jia Ta(WJT) coal ash increases markedly after mixing Bu Lian Gon(BLG) coal with minerals with higher ash fusion temperature and higher content of silicon and aluminum.The slagging problem of easy slagging coal was alleviated by blending coals with high ash melting points. The sintering temperature is affected by blending method, which is related to catalyst distributions and forms on different coal surfaces.

关 键 词：煤催化气化 烧结温度 配煤法 Factsage 结渣机理 

分 类 号：TQ53[化学工程—煤化学工程] TQ54