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Power Engineering

Advanced Combined Cycle Systems Based on Methanol Indirect Combustion

[+] Author and Article Information
Shimin Deng, Rory Hynes

Hatch, 2800 Speakman Drive,  Mississauga, Ontario L5K 2R7, Canada

J. Eng. Gas Turbines Power 134(6), 063001 (Apr 12, 2012) (9 pages) doi:10.1115/1.4005818 History: Received July 25, 2011; Revised October 07, 2011; Published April 09, 2012; Online April 12, 2012

In this paper, two new combined cycle systems with/without CO2 capture based on methanol indirect combustion are developed, which have significantly higher efficiency than methanol fueled conventional combined cycle. The performance of the new systems is compared with conventional combined cycle to identify the potential of methanol indirect combustion. The systems are modeled by using Aspen PlusTM and GTProTM . Exergy analysis and the principle of cascade utilization of chemical exergy reasonably explain the improved efficiency of the new systems. Other merits of the combined cycle systems based on methanol indirect combustion are discussed and their promising commercial application aspects are pointed out.

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Copyright © 2012 by American Society of Mechanical Engineers
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Figures

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Figure 1

Methanol indirect combustion combined cycle schematic diagram

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Figure 2

Methanol direct combustion combined cycle schematic diagram

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Figure 3

Energy level versus temperature diagram

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Figure 4

Steam condensation heat upgrading in Case 2

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Figure 5

Heat transfer profile of fuel system in Case 2

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Figure 6

Precombustion CO2 capture combined cycle schematic diagram

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Figure 7

Selexol unit for CO2 capture

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Figure 8

Heat transfer profile of fuel system in Case 4

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Figure 9

MEA unit for CO2 capture

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