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Title: Effects of fuel cell anode recycle on catalytic fuel reforming

Abstract

The presence of steam in the reactant gas of a catalytic fuel reformer decreases the formation of carbon, minimizing catalyst deactivation. However, the operation of the reformer without supplemental water reduces the size, weight, cost, and overall complexity of the system. The work presented here examines experimentally two options for adding steam to the reformer inlet: (I) recycle of a simulated fuel cell anode exit gas (comprised of mainly CO2, H2O, and N2 and some H2 and CO) and (II) recycle of the reformate from the reformer exit back to the reformer inlet (mainly comprised of H2, CO, and N2 and some H2O and CO2). As expected, anode gas recycle reduced the carbon formation and increased the hydrogen concentration in the reformate. However, reformer recycle was not as effective due principally to the lower water content in the reformate compared to the anode gas. In fact, reformate recycle showed slightly increased carbon formation compared to no recycle. In an attempt to understand the effects of individual gases in these recycle streams (H2, CO, CO2, N2, and H2O), individual gas species were independently introduced to the reformer feed. Published by Elsevier B.V.

Authors:
; ; ; ;
Publication Date:
Research Org.:
National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States). In-house Research; National Energy Technology Lab. (NETL), Pittsburgh, PA, and Morgantown, WV (United States)
Sponsoring Org.:
USDOE Assistant Secretary for Fossil Energy (FE)
OSTI Identifier:
1013553
Report Number(s):
NETL-TPR-1704
Journal ID: ISSN 0378-7753
Resource Type:
Journal Article
Resource Relation:
Journal Name: Journal of Power Sources; Journal Volume: 168; Journal Issue: 2
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING, POLICY, AND ECONOMY; Solid oxide fuel cell, Anode recycle, Reformer recycle, Carbon formation, Auxiliary power unit, Diesel reforming

Citation Formats

shekhawat, D., Berry, D., Gardner, T., Haynes, D., and Spivey, J.. Effects of fuel cell anode recycle on catalytic fuel reforming. United States: N. p., 2007. Web. doi:10.1016/j.jpowsour.2007.03.031.
shekhawat, D., Berry, D., Gardner, T., Haynes, D., & Spivey, J.. Effects of fuel cell anode recycle on catalytic fuel reforming. United States. doi:10.1016/j.jpowsour.2007.03.031.
shekhawat, D., Berry, D., Gardner, T., Haynes, D., and Spivey, J.. Mon . "Effects of fuel cell anode recycle on catalytic fuel reforming". United States. doi:10.1016/j.jpowsour.2007.03.031.
@article{osti_1013553,
title = {Effects of fuel cell anode recycle on catalytic fuel reforming},
author = {shekhawat, D. and Berry, D. and Gardner, T. and Haynes, D. and Spivey, J.},
abstractNote = {The presence of steam in the reactant gas of a catalytic fuel reformer decreases the formation of carbon, minimizing catalyst deactivation. However, the operation of the reformer without supplemental water reduces the size, weight, cost, and overall complexity of the system. The work presented here examines experimentally two options for adding steam to the reformer inlet: (I) recycle of a simulated fuel cell anode exit gas (comprised of mainly CO2, H2O, and N2 and some H2 and CO) and (II) recycle of the reformate from the reformer exit back to the reformer inlet (mainly comprised of H2, CO, and N2 and some H2O and CO2). As expected, anode gas recycle reduced the carbon formation and increased the hydrogen concentration in the reformate. However, reformer recycle was not as effective due principally to the lower water content in the reformate compared to the anode gas. In fact, reformate recycle showed slightly increased carbon formation compared to no recycle. In an attempt to understand the effects of individual gases in these recycle streams (H2, CO, CO2, N2, and H2O), individual gas species were independently introduced to the reformer feed. Published by Elsevier B.V.},
doi = {10.1016/j.jpowsour.2007.03.031},
journal = {Journal of Power Sources},
number = 2,
volume = 168,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}