Numerical Simulation of Three-Stage Pulverized Coal Burner Ignited by High-temperature Air
In China, several million tons of oil is consumed annually to ignite pulverized coal (PC) when the boiler starts up, as well as to stabilize the combustion. In this paper, one oil-free ignition technique was studied for oil-saving, by means of which high temperature air was used to ignite PC. Numerical simulation was carried out to recognize the exact flow and combustion characteristics in a three-stage coal ignition burner. Several important factors influencing the ignition of PC were analyzed, including PC concentration, the inlet velocity of primary air flow, the velocity of high temperature air and PC fineness. The simulation results were in accordance with the experimental data. It is believed that the results can be helpful to the operation and optimization design of three-stage coal ignition burner.
numerical simulation utility boiler pulverized coal high-temperature air
Kang Zhi-Zhong Sun Bao-min
Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (Ministry of Education) Key Laboratory of Condition Monitoring and Control for Power Plant Equipment (Ministry of Education)
国际会议
太原
英文
590-594
2010-10-22（万方平台首次上网日期，不代表论文的发表时间）