Comparative Analysis of Gas Turbine Systems for Pressure Energy Recovery From Blast Furnace Gas PUBLIC ACCESS

[+] Author Affiliations
Giuseppe Leo Guizzi

University of Rome, La Sapienza, Rome, Italy

Paper No. 84-GT-111, pp. V005T16A001; 7 pages
  • ASME 1984 International Gas Turbine Conference and Exhibit
  • Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; Process Industries; Technology Resources
  • Amsterdam, The Netherlands, June 4–7, 1984
  • Conference Sponsors: International Gas Turbine Institute
  • ISBN: 978-0-7918-7950-4
  • Copyright © 1984 by ASME


Modern high capacity blast furnaces are generally operated at high values of back pressure at the top of the furnace (250÷400 kPa abs.). In order to recover this large quantity of pressure energy some turbine equipments have been recently developed. The possible solutions of these systems must take into account the clean up outcoming blast furnace gas conditions (cold and water saturated gas).

Up-to-date solution analysis has carried to three different main process types: wet expansion; dry expansion by partial burning of gas; dry expansion by gas heating in a heat exchanger.

This paper develops an energy based analysis for these equipments taking into account not only the recovery in the turbine unit, but also the effect of this equipment on the whole integrated system “blower - cowpers - blast furnace - gas turbine unit - power conversion station”.

A parametric analysis is performed and the obtained results are presented and discussed.

Copyright © 1984 by ASME
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