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Research Papers: Gas Turbines: Industrial & Cogeneration

Hybrid Power Generation Plant for CO2 Capture

[+] Author and Article Information
Shimin Deng

e-mail: bdeng@hatch.ca

Brian Drover

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

Contributed by the Industrial and Cogeneration Committee of ASME for publication in the JOURNAL OF ENGINEERING FOR GAS TURBINES AND POWER. Manuscript received February 16, 2013; final manuscript received November 22, 2013; published online January 2, 2014. Editor: David Wisler.

J. Eng. Gas Turbines Power 136(5), 052001 (Jan 02, 2014) (6 pages) Paper No: GTP-13-1054; doi: 10.1115/1.4026116 History: Received February 16, 2013; Revised November 22, 2013

In this paper, the issues and challenges of capturing CO2 from a pulverized coal (PC) power plant have been summarized and assessed and a hybrid power generation configuration is developed, which features a gas-turbine cogeneration unit supplying steam for stripping CO2, thereby decoupling the CO2 capture from the steam cycle of PC units. The hybrid power generation cases are modeled by using GTProTM and SteamProTM. The performance of the hybrid power plant is compared with the base case that uses extraction from the steam cycle. Retrofitting existing power plants by this hybrid concept is also assessed; performance comparison and economic analysis indicate that this kind of retrofitting is attractive to utilities with PC power generation fleet.

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Figures

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Fig. 1

PC power plant with post-combustion CO2 capture

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Fig. 2

Amine unit for CO2 capture

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Fig. 3

Block flow diagram of hybrid power plant for CO2 capture

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Fig. 4

Output and efficiency of power plant cases

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Fig. 5

COE versus natural gas price

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Fig. 6

COE versus CO2 price

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