摘要
通过非等温热重实验和固定床实验对两种低阶煤(内蒙兴和煤、小龙潭煤)和三种比较常见的生物质(秸秆、向日葵杆、苹果树枝)的低温共热解特性进行了研究。结果表明,煤与生物质共热解是否存在协同效应与生物质种类及混合比例密切相关。对于内蒙兴和煤,秸秆和向日葵杆的加入对于共热解过程影响不显著,与苹果树枝共热解效果明显大于前两种生物质,且内蒙兴和煤与苹果树枝混合比例为2∶1时,共热解协同效果最为明显。通过固定床实验对共热解产物的研究进一步证明了苹果树枝与内蒙兴和煤共热解时协同效应的存在。焦油组分分析结果表明,焦油中含氧化合物组分含量升高,烃类含量降低,即共热解提高了焦油产率,但不能改善焦油品质。
The co-pyrolysis behavior of two low rank coals(Inner Mongolia Xinghe coal,Xiaolongtan coal)and three common biomasses(straw,sunflower,apple tree branches)was investigated by non-isothermal thermogravimetric analysis and fixed bed experiments.The results show that whether the co-pyrolysis of biomass and coal has synergistic effects is closely related to the type and the adding amount of biomass.The synergistic effect during the co-pyrolysis of Inner Mongolia Xinghe coal and apple tree branches at the mixing proportion 2∶1 is found to be the most obvious,which is further proved by an analysis of co-pyrolysis products in a fixed bed.The analysis results of tar component show that the content of oxygenated compounds in tar increases,but the amount of hydrocarbons decreases.The co-pyrolysis can increase the yield of tar but it cannot improve the quality of tar.
作者
王俊丽
赵强
郝晓刚
黄伟
赵建国
WANG Jun-li;ZHAO Qiang;HAO Xiao-gang;HUANG Wei;ZHAO Jian-guo(College of Chemistry and Chemical Engineering,Shanxi Datong University,Datong 037009,China;College of Chemistry and Chemical Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Key Laboratory of Coal Science and Technology of Education Ministry and Shanxi Province,Taiyuan University of Technology,Taiyuan 030024,China)
出处
《燃料化学学报》
EI
CAS
CSCD
北大核心
2021年第1期37-46,共10页
Journal of Fuel Chemistry and Technology
基金
国家自然科学基金青年科学基金(21908135)
山西省面上青年基金(201901D211435)
山西省留学回国人员科技活动择优资助项目(2019-20)
山西省高等学校科技创新项目(201802096)资助。
关键词
低阶煤
生物质
共热解
焦油
low rank coal
biomass
co-pyrolysis
tar
