煤/生物质共热解过程中生物质碱金属钾迁移规律  

The Biomass Potassium Migration Rule during Coal/Biomass Co-pyrolysis Process

作　　者：宋云彩[1] 李乔同 刘志武 吴少杰 张璐[1] 张羊[1] 冯杰[1] SONG Yuncai;LI Qiaotong;LIU Zhiwu;WU Shaojie;ZHANG Lu;ZHANG Yang;FENG Jie(Training Base of State Key Laboratory of Coal Science and Technology Jointly Constructed by Shanxi Province and Ministry of Science and Technology,Taiyuan University of Technology,Taiyuan 030024,China)

机构地区：[1]太原理工大学煤科学与技术省部共建国家重点实验室培育基地,太原030024

出　　处：《太原理工大学学报》2018年第6期827-832,共6页Journal of Taiyuan University of Technology

基　　金：国家自然科学基金资助项目(21706174;U1610221;21376158;U1361202);山西省青年科技研究基金资助项目(201701D221239);山西省回国留学人员基金资助项目(2017-030)

摘　　要：考察了煤/生物质共热解过程中煤中矿物质、煤半焦物理结构及煤中氧含量等因素对生物质碱金属在共热解过程中迁移行为的影响。结果发现:煤中矿物质和煤焦中氧含量是影响共热解过程中生物质碱金属钾再分配的主要因素;生物质碱金属钾的迁移随煤中矿物质含量(质量分数)的增加而增加,煤焦中生物质钾质量分数从17.69%增加到41.49%;迁移到共热解脱矿物质煤焦中的生物质钾与煤焦中氧的含量有关;而煤焦的物理结构对共热解过程中生物质碱金属的影响很小。This paper investigates coal minerals,coal char physical structure and oxygen content factors that affect biomass potassium migration during coal/biomass co-pyrolysis process.The results state that the coal minerals and the oxygen content of coal char are the main factors for the biomass potassium re-distribution.With the increase of minerals substance content in coal,migration content of biomass potassium during coal/biomass co-pyrolysis process rises from 17.69%to 41.49%(mass percent).For different oxygen contents of coal,the results show that biomass potassium migration is related to the oxygen content of coal char.However,the coal char physical structure has a little influence on biomass potassium migration during coal/biomass co-pyrolysis process.

关 键 词：煤 生物质 热解 碱金属 钾迁移 

分 类 号：TQ546[化学工程—煤化学工程]