کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7159321 1462805 2018 11 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic optimization of dry reformer under catalyst sintering using neural networks
ترجمه فارسی عنوان
بهینه سازی دینامیکی ریفرتور خشک در زیر سوزاندن کاتالیزور با استفاده از شبکه های عصبی
کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی
Artificial neural networks (ANN's) have been used to optimize the performance of a dry reformer with catalyst sintering taken into account. In particular, we study the effects of temperature, pressure and catalyst diameter on the methane and CO2 conversions, as well the H2 to CO ratio and the molar percentage of solid carbon deposited on the catalyst. The design of the ANN was automated using a genetic algorithm (GA) with indirect binary encoding and an objective function that uses the effective number of parameters provided by Bayesian regularization. Results show that an industrially-acceptable catalyst lifespan for a dry reformer can be achieved by periodically optimizing temperatures and pressures to accommodate for the change in catalyst diameter caused by sintering. In particular, it was found that the reactor's operation favors high temperatures of almost 1000 °C, while the pressure must be gradually increased from 1 to 5 bars to remain as far as possible from carbon limits and ensure acceptable conversions and molar ratios in the syngas.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy Conversion and Management - Volume 157, 1 February 2018, Pages 146-156
نویسندگان
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