کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6637711 | 461145 | 2014 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Understanding the enhancement effect of high-temperature steam on the carbonation reaction of CaO with CO2
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
مهندسی شیمی (عمومی)
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چکیده انگلیسی
The steam-enhanced carbonation reaction of CaO with CO2 is a widely observed phenomenon, but its mechanism is unclear. This study proposed that OHâ formation caused by the dissociation of H2O molecules may explain enhanced carbonation. The relationship of oxygen vacancies with OHâ at different temperatures and steam fractions was established and integrated into a new carbonation model. This new model included a simplified rate equation model to describe product island formation and a multi-ion diffusion model that describes product layer growth. Experiments on carbonation and sorption-enhanced water gas shift reactions in a laboratory-scale fluidized bed reactor were conducted to validate the idea of OHâ formation. The new developed models were validated by thermogravimetric analysis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Fuel - Volume 127, 1 July 2014, Pages 88-93
Journal: Fuel - Volume 127, 1 July 2014, Pages 88-93
نویسندگان
Zhenshan Li, Yang Liu, Ningsheng Cai,