摘要
对英国煤进行了显微组分的分离富集,得到了镜质组、丝质组和稳定组三种富集物。使用多气氛高温高压热重装置,对镜质组富集物煤焦进行了CO_2气化动力学研究。所用压力为1atm,温度范围980~1070℃之间。结果表明,镜质组富集物焦样气化动力学符合1-(1-x) ̄(1/3)=kt,气化模型可用收缩核模型描述。对三种富集物进行非等温热重实验中,由热重曲线求得动力学参数。作者认为,在选择合适的动力学模型的基础上,由程序升温热重曲线求动力学参数是简便可靠的。
Three maceral groups,vitrinite,fusinite and exinite,seperated from Britain coal and their gasification kinetics in CO2 have been investigated by TGA at the pressure of 0.1 MPa. The maceral char conversion with time can described as 1-(1-x)1/3 =kt, and the unreacted core shrinking model can be fit for the experimental results reported here.A non-isothermal technique was used to study the CO2 gasification reaction kinetics of three maceral groups and,raw coal by TGA.
出处
《煤炭转化》
CAS
CSCD
北大核心
1996年第4期50-55,共6页
Coal Conversion
基金
中英合作研究项目
关键词
动力学
煤炭气化
分离
压力
热解
maceral,gasification,kinetic study,TGA,Britain