NUMERICAL SIMULATION OF THE SWIRL BURNER COMBUSTION PROCESS IN A 1925T/H COAL-FIRED BOILER
(0) A numerical simulation on the combustion process in a 1925t/h coal-fired boiler with swirl burner was performed by the software of FLUENT. And the combustion characteristics were discussed based on the numerical simulation. It was found that, the bigger Over-Fire Air rate, the less NOx would produce while the combustion efficiency would decrease. There were great effect of swirling strength on firing speed and burnout of pulverized coal air flow. The rich/lean ratio of primary air also had big effect on boiler combustion efficiency. In order to keep combustion efficiency, primary air flow should be adjusted according to fuel characteristics. It was very important for coal-fired boiler combustion adjustment that adjusting the amount of OFA, primary air, secondary air and tertiary air appropriately when other factors maintained constantly.
Coal-fired boiler Swirl burner Numerical simulation
Jun YANG Wan YU Quanli ZHU Peisheng LI Yi HU Zhentao JING Niansu HU Jie LI Yanan YUE
College of Power & Mechanical Engineering, Wuhan University, Wuhan 430072, P.R.China Sewage Sludge a College of Power & Mechanical Engineering, Wuhan University, Wuhan 430072, P.R.China Dept.of Safety Supervision, Tech.& Envi.,China Huaneng Group,Beijing,100082,P.R.China
国际会议
第六届煤燃烧国际会议(The 6th International Symposium on Coal Combustion)
武汉
英文
686-692
2007-12-01（万方平台首次上网日期，不代表论文的发表时间）