One-dimensional Pseudo-homogeneous Modeling and Simulation of Autothermal Reformer
Publish place: 06th International Congress on Chemical Engineering
Publish Year: 1388
نوع سند: مقاله کنفرانسی
زبان: English
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شناسه ملی سند علمی:
ICHEC06_280
تاریخ نمایه سازی: 1 مهر 1388
Abstract:
Autothermal reformer (ATR) usually consists two separate sections: Combustion section and bed section. Namely combustion section model includes atomic mass balances of species, equilibrium equation for water-gas-shift (WGS) reaction and considering some reaction progress for methane steam reforming (MSR). Calculation starts with the assumption of equilibrium for MSR then by departing from equilibrium temperature, concentrations at the end of this section are computed. For bed section, a one–dimensional pseudo-homogeneous model is assumed. Pressure, temperature and concentration gradients along the bed are determined. Effectiveness factors (η) are small values and considered to b constant. It has been shown that their variations have little effect on results. Therefore pseudo-homogeneous model can be used confidently. Intrinsic kinetics is considered for MSR and WGS. Heat losses from reactor wall are taken into account. The results of the model are in good agreement with industrial data available in literature.
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Authors
A Shamkhali
Chemical Engineering Department, Tarbiat Modares University, P.O. Box ۱۴۱۵۵-۴۸۳۸, Tehran, Iran
M . R Omidkhah
Chemical Engineering Department, Tarbiat Modares University, P.O. Box ۱۴۱۵۵-۴۸۳۸, Tehran, Iran
J Towfighi
Chemical Engineering Department, Tarbiat Modares University, P.O. Box ۱۴۱۵۵-۴۸۳۸, Tehran, Iran
M . R Jafari Nasr
National Petrochemical Company, Research & Technology Company, P.O. Box ۱۴۳۵۸-۸۴۷۱۱, Tehran, Ir an
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