کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5477140 1399212 2016 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Dynamic simulation of pure hydrogen production via ethanol steam reforming in a catalytic membrane reactor
ترجمه فارسی عنوان
شبیه سازی دینامیکی تولید هیدروژن خالص از طریق رفع بخار اتانول در یک راکتور غشایی کاتالیزوری
موضوعات مرتبط
مهندسی و علوم پایه مهندسی انرژی انرژی (عمومی)
چکیده انگلیسی
Ethanol steam reforming (ESR) was performed over Pd-Rh/CeO2 catalyst in a catalytic membrane reactor (CMR) as a reformer unit for production of fuel cell grade pure hydrogen. Experiments were performed at 923 K, 6-10 bar, and fuel flow rates of 50-200 μl/min using a mixture of ethanol and distilled water with steam to carbon ratio of 3. A static model for the catalytic zone was derived from the Arrhenius law to calculate the total molar production rates of ESR products, i.e. CO, CO2, CH4, H2, and H2O in the catalytic zone of the CMR (coefficient of determination R2 = 0.993). The pure hydrogen production rate at steady state conditions was modeled by means of a static model based on the Sieverts' law. Finally, a dynamic model was developed under ideal gas law assumptions to simulate the dynamics of pure hydrogen production rate in the case of the fuel flow rate or the operating pressure set point adjustment (transient state) at isothermal conditions. The simulation of fuel flow rate change dynamics was more essential compared to the pressure change one, as the system responded much faster to such an adjustment. The results of the dynamic simulation fitted very well to the experimental values at P = 7-10 bar, which proved the robustness of the simulation based on the Sieverts' law. The simulation presented in this work is similar to the hydrogen flow rate adjustments needed to set the electrical load of a fuel cell, when fed online by the pure hydrogen generating reformer studied.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Energy - Volume 117, Part 2, 15 December 2016, Pages 316-324
نویسندگان
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