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Heat transfer effects on the methanol-steam reforming with partially filled catalyst layers

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Abstract.
The heat transfer effects on a methanol-steam reforming (MSR) process are numerically investigated using a circular reformer with a partially (referred to as the wall-coated reformer) or entirely filled catalyst layer (referred to as the packed-bed reformer). The catalyst layer is formed by packing CuO/ZnO/Al2O3 catalyst particles with a certain porosity and permeability. The fluid flow characteristics are strongly affected by the catalyst-layer thickness. As a consequence, the heat and mass transfer also depend on the catalyst-layer thickness. Under heat supplied by wall heat flux conditions, it is found that higher reforming
temperature can be obtained for the wall-coated reformer compared with the packed-bed reformer. This results in the wall-coated reformer having a better methanol conversion efficiency compared with the packed-bed reformer. Based on our study, the minimum heat transfer coefficient, maximum methanol conversion and maximum carbon monoxide production are obtained when the catalyst-layer thickness is 90% of the reformer radius.

Keywords:
Methanol-steam reforming (MSR)
Wall-coated reformer
Packed-bed reformer
Catalyst layer and heat transfer

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Informasi Detail

Judul Seri

Internat ional Journa l of Hydrogen Energy

No. Panggil

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Penerbit

London : International Association for Hydrogen Energy. Published by Elsevier Ltd.., 2009

Deskripsi Fisik

Internat ional Journa l of Hydrogen Energy 34 (2009) 5398 – 5408

Bahasa

English

ISBN/ISSN

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Klasifikasi

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Tipe Isi

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Tipe Media

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Tipe Pembawa

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Edisi

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Subjek

KIMIA

Info Detail Spesifik

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Pernyataan Tanggungjawab

agus

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