神木煤热解形成NO_x前驱物的影响因素研究  

Effects of some Factors on the Formation of NO_x Precursors during the Pyrolysis of Shenmu Coal

作　　者：冯志华[1] 聂百胜[1] 常丽萍[2] 谢克昌[2] 

机构地区：[1]中国矿业大学(北京)资源与安全工程学院,北京100083 [2]太原理工大学煤科学与技术教育部和山西省重点实验室,山西太原030024

出　　处：《洁净煤技术》2005年第4期46-50,共5页Clean Coal Technology

摘　　要：热解是煤加工的重要基础过程,它是煤燃烧、气化的初始和伴随反应。通过固定床石英反应器研究了不同的热解方式、加热速率、气体流速和粒径对神木煤形成NOx的前驱物HCN和NH3的影响规律,得出以下结论:终温和加热速率越高,形成的HCN和NH3的量越大;粒径的变化对HCN和NH3的影响规律不同;气体流速对HCN和NH3的形成受加热方式的影响。Pyrolysis is the first and essential step in coal conversion process. Experiments have been carried out to investigate the effects of parameters on the formation of HCN and NH3 during Shenmu coal pyrolysis in a fixed - bed reactor. Experimental results indicated that the peak temperature affects the formation of HCN and NH3, particle size, heating rate and gas flow rate. In pace with increasing the end temperature and heating rate, the more HCN and NH3release. Particle size has a reverse effect on the formation of HCN and NH3. The gas flow rate influences the HCN and NH3 depending on the mode of pyrolysis.

关 键 词：煤 热解 HCN NH. 

分 类 号：TQ534.2[化学工程—煤化学工程]