کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1276529 1497507 2014 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Simulation of exhaust gas reforming of propane in a heat exchange integrated microchannel reactor
ترجمه فارسی عنوان
شبیه سازی ریخته گری گاز اگزوز پروپان در یک مبدل حرارتی یک راکتور میکرو کانال
کلمات کلیدی
ریخته گری گاز خروجی، راکتور میکرو کانال، هیدروژن، انتقال گرما، مدل سازی، کاتالیزور پوشش داده شده با دیوار
موضوعات مرتبط
مهندسی و علوم پایه شیمی الکتروشیمی
چکیده انگلیسی


• Exhaust gas reforming of propane is simulated in a catalytic microchannel reactor.
• Microchannel configuration enabled effective heat transfer along the reactor.
• Hot-spot free operation is demonstrated even at low GHSV values.
• H2 production is favored by injecting more propane and steam into the feed.
• Higher GHSV values improved axial heat distribution, but dampened H2 production.

Exhaust gas reforming of propane to a hydrogen-rich mixture in a single, heat-exchange integrated, adiabatic, catalytic microchannel is modeled and simulated at different exhaust gas compositions from conventional gasoline and diesel fueled engines. Propane is considered as the model hydrocarbon for the complex fuels such as gasoline and diesel. The single microchannel is considered to be the characteristic unit of the catalytic exhaust gas reformer involving identical channels located parallel to each other. Steady-state simulations, carried out by the finite volume method, involve parametric variations of the total feed flow rate, and the amounts of propane and steam injected externally into the exhaust gas (reformer feed) stream. The results show that effective heat transfer and uniform temperature distribution, which are critical for the successful operation of the exhaust gas reformer, can be obtained in the microchannel configuration even at low gas hourly space velocities (GHSVs) at which the conventional packed-bed reformers usually lead to remarkable hot-spot formation. Production of H2 and CO is favored by the addition of higher amounts of propane and steam into the reformer feed. Increasing the total feed flow rate, hence the GHSV is found to improve heat distribution along the microchannel at the expense of reduced product yields due to insufficient contact time.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: International Journal of Hydrogen Energy - Volume 39, Issue 2, 13 January 2014, Pages 844–852
نویسندگان
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