O_2/CO_2条件下焦炭氮向NO的转化特性  

Conversion of Char Nitrogen to NO in O_2/CO_2 Environment

作　　者：黄晓宏[1] 王定帮[1] 史云烨[1] 柳朝晖[1] 郑楚光[1] 

机构地区：[1]华中科技大学煤燃烧国家重点实验室,湖北武汉430074

出　　处：《工程热物理学报》2011年第3期537-539,共3页Journal of Engineering Thermophysics

基　　金：国家重大基础研究专项基金(No.2006CB705806);国家高技术研究发展计划(No.2009AA05Z315);国家自然科学基金资助项目(No.50721005;No.50936001)

摘　　要：本文以大同烟煤在固定床上制得的焦炭为研究对象,利用卧式管式反应器对不同工况下焦炭氮向NO的转化特性进行了实验研究。主要开展了18%O_2/N_2和18%O_2/CO_2气氛,分别在973 K、1073 K、1173 K、1273 K和1373K下的焦炭燃烧试验。实验结果表明:在18%O_2/N_2和18%O_2/CO_2气氛下,从973 K到1373 K,焦炭氮向NO的转化率呈现先增大后减小的趋势,在1073 K出现峰值。和O_2/N_2下相比,O_2/CO_2下焦炭氮向NO的转化率均有所下降。The Datong char was prepared in a fixed bed reactor.Conversion characteristics of char nitrogen to NO under different conditions were investigated in a horizontal tube reactor.Experiments of coal char combustion were done in 18%O_2/N_2 and 18%O_2/CO_2 under the temperature of 973 K、1073 K、1173 K、1273 K and 1373 K respectively.The releasing history of NO was monitored during the whole process.The results show that the convert ratio of char nitrogen to NO show a trend of increases at first then decreases with the increasing temperature from 973 K to 1373 K, and the peak appeared at 1073 K.Compared to O_2/N_2,the convert ratio of char nitrogen to NO is comparatively lower in O_2/CO_2.

关 键 词：煤焦 NO O2/CO2 

分 类 号：TK16[动力工程及工程热物理—热能工程]