煤粉浓度对于浓淡燃烧器设计的影响

Impact of Pulverized Coal Concentration on the Design of Concentrated thin Burners

通过分析传统的煤粉燃烧器设计时一次风管中煤粉浓度与一次风量和一次风速的关系发现，对于低挥发份煤，燃烧器出口的煤粉浓度很难达到着火燃烧所需的最佳浓度，从而提出将煤粉浓度作为一个重要参数在输粉系统及燃烧器设计时予以考虑。提出了新的煤粉浓淡燃烧器设计方法，为输粉系统设计提供了依据。

Through analyzing the relationship of pulverized coal concentration in the primary air pipe with primary air quantity and velocity during the design of conventional pulverized coal burners,it is found out that,for burning coal with low volatile matter,it is very difficult for pulverized coal concentration at burner outlet to reach the optimal concentration required for ignition,thus it is put forward,pulverized coal concentration should be taken into consideration as an important parameter during the design of pulverized coal feeding system and burners.The proposed design method of new concentrated thin burners provides the basis for the design of pulverized coal feeding system.