کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
8074639 1521456 2015 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Process simulation of multi-stage chemical-looping combustion using Aspen Plus
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
پیش نمایش صفحه اول مقاله
Process simulation of multi-stage chemical-looping combustion using Aspen Plus
چکیده انگلیسی
In recent years, Chemical-looping combustion (CLC) is increasingly being considered as a promising technology to increase the efficiency of carbon capture in coal-fired power plants and for reducing CO2 emissions into the atmosphere. The char gasification step required in the CLC process when using solid fuels such as coal is slow and often incomplete, which limits the rate of fuel conversion. The concept of multi-staged fuel reaction is proposed as an improvement to the original CLC concept to address this issue. System-level simulations of the single-stage, two-stage and four-stage CLC processes are conducted in Aspen Plus using a plug flow reactor model for the gasification step to incorporate the reaction kinetics into the simulation. By varying the reactor size and examining the char conversion and net energy output, the optimum reactor size for each multi-stage configuration is determined. The effect of multi-staging on the exhaust composition is also investigated. The results of the simulations show that multi-staging allows the use of multiple smaller reactors with the same total volume without incurring any penalty on the net energy output.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 90, Part 2, October 2015, Pages 1869-1877
نویسندگان
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