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New Cycles for Methanol-Fuelled Gas Turbines PUBLIC ACCESS

[+] Author Affiliations
M. M. S. Klaeyle, R. Laurent, F. Nandjee

Electricite De France, Chatou, France

Paper No. 87-GT-175, pp. V003T06A023; 9 pages
doi:10.1115/87-GT-175
From:
  • ASME 1987 International Gas Turbine Conference and Exhibition
  • Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations
  • Anaheim, California, USA, May 31–June 4, 1987
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7925-2
  • Copyright © 1987 by ASME

abstract

Assuming that methanol is employed as fuel, the heat released from the gas turbine discharges can be used to cause an endothermic catalytic reaction: CH3 OH + H2 O + heat → 0,5 CO + 0,5 CO2 + 2,5 H2 + 0,5 H2 O; this produces a gaseous fuel, the lower heaving value of which exceeds that of methanol by 18%. Combining both steam reforming of methanol and steam injection in the combustor by using the maximum heat available in the exhaust gases, very interesting cycle characteristics can be achieved (more than 50% efficiency (LHV basis), same capital cost per kW as simple cycle gas turbine (9000E engine), low emissions of NOx and SO2). Reheating the gas during the expansion will improve the efficiency by 2–3 points allowing an increase in power output without increasing the capital cost per kW. At the end of the century, these types of cycles could be applied to all the new, non-nuclear power plants in the French energy system. The annual cumulative duration of such generators will not be greater than 2000 hours.

Copyright © 1987 by ASME
This article is only available in the PDF format.

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