Experimental study on ignition characteristics of pulverized coal under high-temperature oxygen condition

2016 International Conference on New Energy and Future Energy System

Liu, G.W.^1 ; Liu, Y.H.^1 ; Dong, P.^2

School of Energy and Power Engineering, Northeast Dianli University, Jilin

132000, China^1

College of Energy Science and Engineering, Harbin Institute of Technology, Harbin

150001, China^2

关键词: Experimental system;    Heating temperatures;    High temperature;    Ignition characteristics;    Ignition process;    Ignition technology;    Pulverized coal concentration;    Pulverized coals;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/40/1/012002/pdf
DOI  :  10.1088/1755-1315/40/1/012002

来源: IOP

【 摘 要 】

The high-temperature oxygen ignition technology of pulverized coal, which can replace the oil gun and achieve oil-free pulverized coal ignition by mixing the high- temperature oxygen and the pulverized coal stream directly, was proposed and a relevant ignition experimental system was built. The ignition characteristics of pulverized coal under high-temperature oxygen condition were investigated: the ignition process was described and analyzed, the influence of relevant parameters on the pulverized coal stream ignition were obtained and analyzed. The results showed: when the oxygen heating temperature is over 750 °C, the pulverized coal stream could be ignited successfully by high-temperature oxygen; increasing the pulverized coal concentration, primary air temperature and oxygen volume flow rate or decreasing the primary air velocity is helpful for the ignition and combustion of the pulverized coal stream.