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Methanol reformation for hydrogen production from a single channel with cavities

DSpace at IIT Bombay

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Title Methanol reformation for hydrogen production from a single channel with cavities
 
Creator NEHE, P
KUMAR, S
 
Subject Cavity type reformer
Hydrogen production
Methanol conversion rate
Plate type microreformer
MICRO-FUEL PROCESSOR
PACKED-BED REACTORS
CELL PERFORMANCE
STEAM REFORMER
FLOW-FIELD
MICROREACTOR
DESIGN
CU/ZNO/AL2O3
CATALYSTS
SYSTEM
 
Description This paper proposes a novel design concept to enhance the methanol conversion rate in a single channel plate type microreformer with cavities. Detailed numerical studies have been carried out to understand the steam reforming of methanol for hydrogen production. The effects of operating parameters such as steam-to-methanol molar ratio, reforming temperature, reformer gas hourly space velocity (GHSV), channel wall conductivity, wall thickness and catalyst layer thickness on reforming characteristics are investigated. The effect of cavities on microreformer performance is discussed in terms of cavity aspect ratio and its spacing. For a reforming temperature of 250 degrees C, steam methanol molar ratio of 1.1, average inlet fluid temperature of 120 degrees C and catalyst thickness of 30 mu m, a methanol conversion of similar to 98% with product gases consisting of 75% H-2, 23% CO2 and 928 ppm CO have been obtained at the outlet of the channel. Present studies show that higher methanol conversion rates can be achieved within a shorter channel length with cavities. The proposed design can overcome the issue of shape and size of manifolds and flow equi-distribution for multiple microchannels type design and also suitable from fabrication viewpoint and practical applications. Copyright (C) 2013, Hydrogen Energy Publications, LLC. Published by Elsevier Ltd. All rights reserved.
 
Publisher PERGAMON-ELSEVIER SCIENCE LTD
 
Date 2014-10-15T14:09:56Z
2014-10-15T14:09:56Z
2013
 
Type Article
 
Identifier INTERNATIONAL JOURNAL OF HYDROGEN ENERGY, 38(30)13216-13229
0360-3199
1879-3487
http://dx.doi.org/10.1016/j.ijhydene.2013.07.119
http://dspace.library.iitb.ac.in/jspui/handle/100/15067
 
Language en