采用热天平研究煤粉燃烧特性时氧通量的计算  

The Calculation of Oxygen Flux During the Study of Pulverized Coal Combustion Characteristics with the Help of a Thermobalance

作　　者：朱群益[1] 赵广播[1] 阮根健[1] 秦裕琨[1] 吕微[2] 

机构地区：[1]哈尔滨工业大学 [2]哈尔滨理工大学

出　　处：《热能动力工程》1997年第6期438-441,共4页Journal of Engineering for Thermal Energy and Power

摘　　要：采用以热天平研究煤粉燃烧特性时通过坩埚出口截面氧通量的计算方法，对织金煤焦燃烧特性曲线的分析计算，得试样燃烧所需氧气以扩散传质方式经坩埚出口截面传递到试样层表面，并对该计算方法进行了分析。试样层表面氧分压及氧通量可采用Ｆｉｃｋ扩散定律进行计算。Described in this paper is the method of calculating the oxygen flux through a crucible outlet section during the study of pulverized coal combustion characteristics with the use of a thermobalance.Through the analysis and calculation of combustion characteristic curves of Zhi Jin coke it is found that the oxygen needed for the combustion of a sample was transferred to the sample layer surface in a diffusion mass transfer manner through the crucible outlet section.The oxygen partial pressure and oxygen flux on the sample layer surface can be determined by the use of Fick's diffusion law.

关 键 词：煤粉 热天平煤粉 燃烧 氧通量 

分 类 号：TQ038.4[化学工程] TQ534