疏水聚团制备高纯煤热解/气化特性研究  

Research on pyrolysis/gasification characteristics of high-purity coal prepared with hydrophobic cluster

作　　者：王鹏伟 刘丹 刘巧霞 兰伟伟 吕君君 黄勇 Wang Pengwei;Liu Dan;Liu Qiaoxia;Lan Weiwei;Lv Junjun;Huang Yong(The Northwest Research Institute of Chemical Industry Co.,Ltd.,Xi'an Shaanxi 710075,China)

机构地区：[1]西北化工研究院有限公司,陕西西安710075

出　　处：《煤化工》2025年第1期22-27,共6页Coal Chemical Industry

基　　金：陕西省重点研发计划项目(2023-YBGY-081);陕西延长石油(集团)有限责任公司科技项目(ycsy2024cyjs-A-03)。

摘　　要：采用疏水聚团浮选技术对陕北典型烟煤进行脱灰处理获得精煤,重点对精煤的热解/气化特性进行研究。结果表明:精煤在高温阶段(≥800℃)的热解、气化速率明显增强,使得精煤的热解失重率增加了13.89%、气化失重率增加了9.46%;精煤流化床热解焦油收率提高了24.22%,焦油组分中长链烷烃相对含量降低、酚类相对含量增加、多环芳烃相对含量减少;精煤与CO_(2)流化床气化使得碳转化率提高了11.16%,CO体积分数提高了76.86%,说明原煤脱灰精制可以有效提高煤中有机质浓度,改善热解焦油性质,提高煤的气化反应活性。The hydrophobic cluster flotation technology was used to remove ash in the typical bituminous coal in northern Shaanxi to obtain the refined coal,and the pyrolysis/gasification characteristics of the refined coal was studied in detail.The results showed that the pyrolysis and gasification rate of refined coal at the high-temperature stage(≥800℃)increased obviously,which had increased the pyrolysis weight loss rate of refined coal by 13.89%and the gasification weight loss rate by 9.46%;the yield of fluidized-bed pyrolytic tar of refined coal increased by 24.22%,the relative content of long-chain alkanes in the tar components decreased,the relative content of phenols increased and that of polycyclic aromatic hydrocarbons decreased;the fluidized-bed gasification of refined coal and CO_(2) increased the carbon conversion rate by 11.16%,and the CO volume fraction increased by 76.86%,indicating that deashing-refining of raw coal could effectively increase the concentration of organic matter in coal,improve the properties of pyrolytic tar,and improve the gasification reaction activity of coal.

关 键 词：疏水聚团 高纯煤 热解 气化 焦油 反应活性 

分 类 号：TQ546[化学工程—煤化学工程]