Comparison of combustion characteristics of petroleum coke and coal in one-dimensional furnace

作     者：Qulan ZHOU Qinxin ZHAO Guangjie ZHOU Huiqing WANG Tongmo XU Shien HUI 

作者机构：State Key Laboratory of Multiphase Flow of Power Engineering Xi'an Jiaotong University Xi'an 710049 China 

出 版 物：《中国高等学校学术文摘·能源与动力工程》 (FRONTIERS OF ENERGY AND POWER ENGINEERING IN CHINA)

年 卷 期：2010年第4卷第3期

页      面：436-442页

核心收录：

学科分类：080702[工学-热能工程] 08[工学] 0807[工学-动力工程及工程热物理] 

基　　金：The work was supported in part by the National Nature Science Foundation of China(50276051) the National Basic Research Program of China(2005CB221206) 

主　　题：petroleum coke Shenmu soft coal Hejin lean coal combustion characteristics experimental research 

摘      要：The effect of primary air fraction f1, outer secondary air swirl strength and excess oxygen coefficient on the combustion characteristics of petroleum coke, Hejin lean coal and Shenmu soft coal are researched on a one-dimensional furnace using a dual channel swirl burner. The results show that with the increase in primary air fraction f1, the NOx emission concentrations of both Hejin lean coal and petroleum coke increase, and the combustion worsens in the earlier stage, but the burn-out rate of Shenmu soft coal is improved. The NOx emission concentration obtains a minimum value with an increase in f1. The ignition and burn-out rate of petroleum coke and Shenmu soft coal are optimal when Ωdl is minimum and Ωdl=0.87, respectively. However, both the NOx emission concentration of petroleum coke and Shenmu soft coal are minimum when Ωdl=1.08. The increase in excess oxygen coefficient delays the ignition of petroleum coke, worsens the combustion condition and increases the NOx emission concentration, but it greatly decreases the NOx emission concentration of Shenmu soft coal.