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TECHNICAL PAPERS: Gas Turbines: Electric Power

A Recuperated Gas Turbine Incorporating External Heat Sources in the Combined Gas-Steam Cycle

[+] Author and Article Information
R. Chodkiewicz, J. Krysinski, J. Porochnicki

Technical University of Lodz, Institute of Turbomachinery, Wolczanska 219/223, 93-005 Lodz, Poland

J. Eng. Gas Turbines Power 124(2), 263-269 (Mar 26, 2002) (7 pages) doi:10.1115/1.1448325 History: Received November 01, 1999; Revised February 01, 2000; Online March 26, 2002
Copyright © 2002 by ASME
Topics: Heat , Gas turbines , Cycles , Steam
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References

Wieler, C. L., 1998, WR-21 Intercooled Recuperated Gas Turbine, http://www.gas-turbines.com.RANDD/ICR-WRDS.htm.
Chodkiewicz, R., Porochnicki, J., and Potapczyk, A., 1998, Electric Power and Nitric Acid Coproduction: A New Concept in Reducing the Energy Costs, Vol. III, PowerGen Europe’98, Milan, Italy pp. 611–625.
Ullman Encyclopedia of Industrial Chemistry, 1991, Vol. A17.
Lane, A. W., and Hoffman, P. A., 1998, “The U.S. Dept. of Energy Advanced Turbine Syst. Program,” ISROMAC-7, Hawaii.
Miller, H. F., 1989, Blade Erosion—FCCU Power Recovery Expanders, D-R Turbo Products Division, Olean, NY.

Figures

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Entropy diagram of gas turbine processes. Simple cycle: 0-1-2-3-4-5; cycle with heat recuperation with turbine exhaust gases: 0-1-2-Rw-3R-4Rw-5Rw-6Rw; cycle with heat recuperation with an external source 0-1-2-Rzi-3R-4Rz-5Rz, i=1,[[ellipsis]]–n.
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Combined gas-steam cycle utilizing the catalyst regeneration energy (5). E–expansion turbine, ST–steam turbine, MG-motor-generator, WHB–waste heat steam boiler, sc–spent catalyst, rc–regenerated catalyst, R–Regenerator, 3CS–third cyclone stage, EP–electrostatic precipitator, S–stack.
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Combined gas-steam cycle using catalyst regeneration energy: Variant 1–strictly integrated GT with FCC process, Variant 2–with conventional machine train (without ST) parallel to the recuperated GT. PAC–process air compressor, E–expander, MG–motor-generator, GT–gas turbine, APH–air preheater (recuperator), ST–steam turbine, G–generator, WHB–waste heat steam boiler, IC–intersection cooler, sc–spent catalyst, rc–regenerated catalyst, R–regenerator, 3RD–third cyclone stage, EP–electrostatic precipitator, S–stack.
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Overall thermal efficiency of the advanced FCC energy system versus relative process air extraction (T3=1100°C, 1311°C, 1455°C; π=20)
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Combined gas/steam cycle fuel efficiency of the advanced FCC energy system versus relative process air extraction (T3=1100°C, 1311°C, 1455°C; π=20)
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Electric power of the combined gas/steam FCC energy system, expander power and steam turbine power versus relative process air extraction (T3=1100°C, 1311°C, 1455°C; π=20)
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Oxygen dioxide emissions for the combine gas/steam cycle of the advanced FCC energy system
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NOx emissions for the combined gas/steam cycle of the advanced FCC energy system
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Overall thermal efficiency of the advanced FCC energy system versus relative process air extraction
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Electric power of the combined gas/steam FCC energy system, expander power, and steam turbine power versus relative process air extraction
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Schematic arrangement of a nitric acid plant. 1–ammonia air mixer, 2–converter catalyst, 3–converter elbow, 4–expander gas heater, 5–high pressure waste heat boiler, 6–tail gas heater, 7–waste heat exchanger, 8–absorber, 9–steam superheater, 10–combustor (NOx catalytic reduction), 11–economizer, 12–stack, ST–steam turbine, LPC–low pressure compressor, HPC–high pressure compressor, E–expander.
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Temperature diagram for the heat exchanger train in the HNO3 plant of 1000 Mg HNO3 daily capacity (the exchanger and apparatus numbers correspond to numbers shown in Fig. 11)
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Temperature diagram of the high pressure waste heat boiler for different arrangements of boiler heating surfaces (economizer, evaporator, superheater)
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Recuperated gas turbine with compressed air preheating combined with steam cycle for an advanced nitric acid plant (with electric power coproduction). Compressor-expander train like in conventional energy system.
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Temperature diagram for the heat exchanger train in the HNO3 plant of 1000 Mg HNO3 daily capacity. NOxCR–catalytic combustor for NOx red., HTE–high temperature exchanger, AP–air preheater for the GT combustor, LTE–low temperature tail gas exchanger.

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