Hydrogen from coal: Production and utilisation technologies

Shoko, E., McLellan, B. C., Dicks, A. L. and Diniz da Costa, J. C. (2006) Hydrogen from coal: Production and utilisation technologies. International Journal of Coal Geology, 65 3-4: 213-222. doi:10.1016/j.coal.2005.05.004

Author Shoko, E.
McLellan, B. C.
Dicks, A. L.
Diniz da Costa, J. C.
Title Hydrogen from coal: Production and utilisation technologies
Journal name International Journal of Coal Geology   Check publisher's open access policy
ISSN 0166-5162
Publication date 2006
Sub-type Article (original research)
DOI 10.1016/j.coal.2005.05.004
Volume 65
Issue 3-4
Start page 213
End page 222
Total pages 10
Editor J C Hower (Editor-in-Chief)
Place of publication Netherlands
Publisher Elsevier Science BV
Collection year 2006
Language eng
Subject C1
290699 Chemical Engineering not elsewhere classified
660101 Coal-electricity
Abstract Error condition detected Although coal may be viewed as a dirty fuel due to its high greenhouse emissions when combusted, a strong case can be made for coal to be a major world source of clean H-2 energy. Apart from the fact that resources of coal will outlast oil and natural gas by centuries, there is a shift towards developing environmentally benign coal technologies, which can lead to high energy conversion efficiencies and low air pollution emissions as compared to conventional coal fired power generation plant. There are currently several world research and industrial development projects in the areas of Integrated Gasification Combined Cycles (IGCC) and Integrated Gasification Fuel Cell (IGFC) systems. In such systems, there is a need to integrate complex unit operations including gasifiers, gas separation and cleaning units, water gas shift reactors, turbines, heat exchangers, steam generators and fuel cells. IGFC systems tested in the USA, Europe and Japan employing gasifiers (Texaco, Lurgi and Eagle) and fuel cells have resulted in energy conversions at efficiency of 47.5% (HHV) which is much higher than the 30-35% efficiency of conventional coal fired power generation. Solid oxide fuel cells (SOFC) and molten carbonate fuel cells (MCFC) are the front runners in energy production from coal gases. These fuel cells can operate at high temperatures and are robust to gas poisoning impurities. IGCC and IGFC technologies are expensive and currently economically uncompetitive as compared to established and mature power generation technology. However, further efficiency and technology improvements coupled with world pressures on limitation of greenhouse gases and other gaseous pollutants could make IGCC/IGFC technically and economically viable for hydrogen production and utilisation in clean and environmentally benign energy systems. (c) 2005 Elsevier B.V. All rights reserved.
Keyword Energy & Fuels
Geosciences, Multidisciplinary
Water Gas Shift
Fuel Cells And Coal
Gas Shift Reaction
Membrane Reactor
Q-Index Code C1

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Created: Wed, 15 Aug 2007, 10:31:40 EST