PREDICTION OF IGNITION BEHAVIOR IN A TANGENTIALLY FIRED PULVERIZED COAL BOILER USING CFD

摘要：

Prediction of pulverized coal ignition behavior in a 40MW tangentially fired commercial boiler was studied. Pulverized coal combustion simulation was performed considering radiation properties of particles. To evaluate the radiation properties of coal particle clouds, the monochromatic extinction of the sample particles dispersed in paraffin wax was measured by the FT-IR spectroscopic analysis. The extinction efficiency was correlated by a function of carbon content, and applied to the radiative transfer equation. The results are confirmed by available operating data, design data, and the ignition image in the boiler whose inside was observed by the developed high temperature resistant CCD video camera system. The work indicates that the simulation method can be applied to commercial boilers and predict the ignition behavior with considering not only coal properties but also boiler operating conditions.

关键词： Ignition Pulverized coal Tangentially fired boiler Combustion simulation Radiation transfer

作者: T.Asotani T.Yamashita H.Tominaga Y.Itaya S.Mori

作者单位: Engineering Design & Technical Dept., Idemitsu Engineering Co., Ltd., Chiba, Japan Department of Che Coal and Environment Research Laboratory, Idemitsu Kosan Co.Ltd., Chiba, Japan Department of Chemical Engineering, Nagoya University, Nagoya, Japan

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: 705-711

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）