COMBUSTION PROCESS SIMULATION OF A TANGENTIALLY COAL BLEND FIRED BOILER

摘要：

The combustion process in a 300 MW tangentially fired boiler furnace employing inferior bituminous coal and anthracite as fuel, injected at different floor levels, has been numerically simulated. A new three-mixture-fraction model was used to model the combustion process of each individual coal of the binary blends. In this model, the simultaneous presence of two kinds of coal of different property is allowed. For the purpose of comparison, the single-mixture-fraction model was used, only assuming a single coal of weighted average property. Simulation and actual measured results show that the temperature and oxygen concentration distribution of the across section in the furnace are nonuniform, but symmetric across corners. The results computed by the three-mixture-fraction model are more in conformity with the actual combustion process of the coal blends.

关键词： boiler coal blend three-mizture-fraction model numerical simulation coal property

作者: Qingyan FANG Huaichun ZHOU Lai HUANG Bin YAO Huajian WANG

作者单位: State Key Laboratory of Coal Combustion, Huazhong University of Science and Technology, Wuhan 430074, P R China

会议类型: 国际会议

会议名称: 第六届煤燃烧国际会议(The 6th International Symposium on Coal Combustion)

会议地点: 武汉

会议语种:英文

页码: 280-287

在线出版日期: 2007-12-01（万方平台首次上网日期，不代表论文的发表时间）