Investigation on Rice Husk Combustion in a Fluidized Bed with Longitudinal Vortex Generators

10th International Conference on Combustion, Incineration/Pyrolysis, Emission and Climate Change

生态环境科学

Eiamsa-Ard, Smith^1 ; Wongcharee, Khwanchit^1 ; Chokphoemphun, Suriya^2 ; Chuwattanakul, Varesa^3 ; Promvonge, Pongjet^3

Department of Mechanical Engineering, Faculty of Engineering, Mahanakorn University of Technology, Bangkok

10530, Thailand^1

Major of Mechanical Engineering, Faculty of Industry and Technology, Rajamangala University of Technology, Isan Sakonnakhon Campus, Sakonnakhon, Thailand^2

Department of Food Engineering, Faculty of Engineering, King Mongkut's Institute of Technology, Ladkrabang, Bangkok

10520, Thailand^3

关键词: Air mass flow rate;    Combustion efficiencies;    Combustion temperatures;    Excess air;    Longitudinal vortex generators;    Longitudinal vortices;    Ribbed surfaces;    Rice husk;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/265/1/012008/pdf
DOI  :  10.1088/1755-1315/265/1/012008

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Effects of wavy-ribbed surface chamber on combustion temperature/efficiency and exhaust gas behaviours in a fluidized bed combustor were investigated. In the experiments, the five wavy-rib pairs were placed at the bottom chamber for inducing longitudinal vortex flow which enhanced the fuel and fluid/combustion-air mixing in the top chamber for giving better combustion efficiency. The experiments were examined at five percent excess airs of EA = 15%, 30%, 45%, 60%, and 75% and were tested at the constant air mass flow rate of 95 kg/hr. From experimental results, it can be showed that a fluidized bed combustor with wavy-ribbed surface chamber can be promoted the high combustion efficient for all test runs especially at the percent excess airs of EA = 75%.