CAJ | 학술논문

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CO_2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CO_2的逸出情况,反映预处理对煤的脱羧效果.
설계료재선감측매화기타함고휘발분조빈양품적열해기체적반응기,장차반응기여상품형질보(MS)련용,건립료상압정서승온열해-질보(AP-TPP-MS)계통.용모형화합물화진실양품검험료해계통적가고성화중복성,병탐토료통과예처리전후매열해시CO_2적일출정황래반영매탈최효과적가행성.결과표명,차계통용우모형화합물열해시능획득향응호、중첩타미소、대칭성호적기체일출봉;용우양화매시능청석가변지현시동일열해기체적다개일출봉;계통적은정성화중복성교호.가이용차계통감측CO_2적일출정황,반영예처리대매적탈최효과.
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 CO_2 evolution curves.