کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
687854 1460074 2016 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Additive effects of steam addition and HBr doping for CaO-based sorbents for CO2 capture
موضوعات مرتبط
مهندسی و علوم پایه مهندسی شیمی تکنولوژی و شیمی فرآیندی
پیش نمایش صفحه اول مقاله
Additive effects of steam addition and HBr doping for CaO-based sorbents for CO2 capture
چکیده انگلیسی


• Limestone sorbent enhanced for calcium looping by addition of HBr.
• Addition of steam is demonstrated to have a synergistic effect with HBr.
• Results measured in a fluidised bed show up to 3 times higher CO2 uptake.

Calcium looping is a developing CO2 capture and storage technology that employs the reversible carbonation of CaO (potentially derived from natural limestone). The CO2 uptake potential of CaO particles reduces upon repeated reaction, largely through loss of reactive surface area and densification of particles. Doping of particles has previously been found to reduce the rate of decay of CO2 uptake, as has the introduction of steam into calcination and carbonation stages of the reaction. Here, the synergistic effects of steam and doping, using an HBr solution, of 5 natural limestones have been investigated. The enhancement to the CO2 uptake was found to be additive, with CO2 uptake after 13 cycles found to be up to 3 times higher for HBr-doped limestones subjected to cycles of carbonation and calcination in the presence of 10% steam, in comparison to natural limestone cycled in the absence of steam. A qualitative discussion of kinetic data is also presented.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Chemical Engineering and Processing: Process Intensification - Volume 103, May 2016, Pages 21–26
نویسندگان
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