常压程序升温热解-质谱系统在煤脱羧过程中的应用  

Establishment of Atmosphere Pressure-Temperature Programmed Pyrolysis-Mass Spectrometric System and Its Application on Decarboxylation of Coal

作　　者：王志青[1,2] 白宗庆[1] 李文[1] 陈皓侃[1] 

机构地区：[1]中国科学院山西煤炭化学研究所煤转化国家重点实验室,太原030001 [2]中国科学院研究生院,北京100039

出　　处：《分析化学》2010年第3期393-396,共4页Chinese Journal of Analytical Chemistry

基　　金：国家自然科学基金项目(No.90610006);国家高技术研究发展计划(863计划;No.2007AA05Z329);科技部国际合作项目(No.2007DFC60110)资助

摘　　要：设计了在线监测煤和其它含高挥发分组份样品的热解气体的反应器,将此反应器与商品型质谱(MS)联用,建立了常压程序升温热解-质谱(AP-TPP-MS)系统。用模型化合物和真实样品检验了该系统的可靠性和重复性,并探讨了通过预处理前后煤热解时CO2的逸出情况来反映煤脱羧效果的可行性。结果表明,此系统用于模型化合物热解时能获得响应好、重叠拖尾少、对称性好的气体逸出峰;用于氧化煤时能清晰可辨地显示同一热解气体的多个逸出峰;系统的稳定性和重复性较好。可利用此系统监测CO2的逸出情况,反映预处理对煤的脱羧效果。A quartz tube reactor was designed to combine with a commercial mass spectrometer for on-line detecting the gases evolved during pyrolysis of coal and other samples with high volatile. The reliability and repeatability of this atmosphere pressure-temperature programmed pyrolysis-mass spectrum （ AP-TPP-MS） system were tested by model compound and real coal sample. The results show that pyrolysis of model compound can give good response,less overlap or tailing gases evolution curves; and multi-peaks can be observed from the same gas curve of real sample. The reliability and repeatability of this system are perfect and the system can be applied to study the coals decarboxylation by comparing the CO2 evolution curves.

关 键 词：常压程序升温热解-质谱 水热预处理 脱羧 

分 类 号：TQ530.2[化学工程—煤化学工程] X799.3[环境科学与工程—环境工程]