کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1743226 1522005 2013 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Process simulations of large-scale CO2 capture in coal-fired power plants using aqueous ammonia solution
موضوعات مرتبط
مهندسی و علوم پایه علوم زمین و سیارات فرآیندهای سطح زمین
پیش نمایش صفحه اول مقاله
Process simulations of large-scale CO2 capture in coal-fired power plants using aqueous ammonia solution
چکیده انگلیسی


• Process simulations of the large-scale CO2 capture process were carried out.
• The rate-base model was verified by comparing with the experimental data.
• A 500 MW coal-fired power plant was selected as the reference unit.
• The effects of key operating parameters on CO2 capture process were analyzed.

Analysis of large-scale CO2 capture process based on aqueous ammonia solution for a 500 MW coal-fired power plant was carried out using process simulation. Firstly, the equilibrium-based model, RadFrac, in Aspen Plus process simulator, is adopted to estimate the NH3 concentration and the flow rate of the lean aqueous ammonia. Secondly, the rate-based model, RateFrac, is used to analyze the effects of the size of the absorber. Finally, operating parameters of the CO2 absorption and regeneration processes are determined according to their effects on the whole CO2 capture process. Under the optimal condition, the CO2 output is 57.08 kg/s. For a 500 MW coal-fired power plant, the amount of CO2 captured per year can reach 1.8 million tons. Because of the restriction of the size of the columns, the predicted minimum regeneration energy is 5750 kJ/kg CO2. Capture part of the overall flue gas or paralleling more columns could be the alternative solutions for reducing the energy consumption.

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ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Greenhouse Gas Control - Volume 16, August 2013, Pages 61–71
نویسندگان
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