کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
206571 461192 2010 12 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Pulverized straw combustion in a low-NOx multifuel burner: Modeling the transition from coal to straw
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی مهندسی شیمی (عمومی)
پیش نمایش صفحه اول مقاله
Pulverized straw combustion in a low-NOx multifuel burner: Modeling the transition from coal to straw
چکیده انگلیسی

A CFD simulation of pulverized coal and straw combustion using a commercial multifuel burner have been undertaken to examine the difference in combustion characteristics. Focus has also been directed to development of the modeling technique to deal with larger non-spherical straw particles and to determine the relative importance of different modeling choices for straw combustion. Investigated modeling choices encompass the particle size and shape distribution, the modification of particle motion and heating due to the departure from the spherical ideal, the devolatilization rate of straw, the influence of inlet boundary conditions and the effect of particles on the carrier phase turbulence. It is concluded that straw combustion is associated with a significantly longer flame and smaller recirculation zones compared to coal combustion for the present air flow specifications. The particle size and shape distribution is the most influential parameter for the correct prediction of straw combustion. The inlet boundary conditions and the application of a turbulence modulation model can significantly affect the predicted combustion efficiency whereas the choice of devolatilization parameters was found to be of minor importance.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 89, Issue 10, October 2010, Pages 3051–3062
نویسندگان
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