کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
675823 1459629 2006 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Reaction rate coefficients in decomposition of lumpy limestone of different origin
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی جریان سیال و فرایندهای انتقال
پیش نمایش صفحه اول مقاله
Reaction rate coefficients in decomposition of lumpy limestone of different origin
چکیده انگلیسی

A method is described to evaluate the reaction rate coefficients, pore diffusivity and thermal conductivity of the lime layer in the decomposition of limestone by linearization of conversion curves, based on the shrinking core model. Spherical and long cylindrical samples with diameters in the range of 20–50 mm were prepared and thermally decomposed in a chamber furnace at constant temperature and CO2 pressure. By weighing and simultaneous measuring of the internal temperature, the decomposition behavior of these samples was studied. The reaction rate coefficients thus obtained vary from 0.003 to 0.012 m s−1 with a factor of 4, depending upon the origin of the limestone. The reaction coefficients measured by other authors based on limestone powder lie within this range.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Thermochimica Acta - Volume 449, Issues 1–2, 1 October 2006, Pages 8–15
نویسندگان
, ,