Study on a gas-steam combined cycle system with CO2 capture by integrating molten carbonate fuel cell

This paper studies a gas-steam combined cycle system with CO2 capture by integrating the MCFC (molten carbonate fuel cell). With the Aspen plus software, this paper builds the model of the overall MCFC-GT hybrid system with CO2 capture and analyzes the effects of the key parameters on the performances of the overall system. The result shows that compared with the gas-steam combined cycle system without CO2 capture, the efficiency of the new system with CO2 capture does not decrease obviously and keeps the same efficiency with the original gas steam combined cycle system when the carbon capture percentage is 45%. When the carbon capture percentage reaches up to 85%, the efficiency of the new system is about 54.96%, only 0.67 percent points lower than that of the original gas-steam combined cycle system. The results show that the new system has an obvious superiority of thermal performance. However, its technical economic performance needs be improved with the technical development of MCFC and ITM (oxygen ion transfer membrane). Achievements from this paper will provide the useful reference for CO2 capture with lower energy consumption from the traditional power generation system.

[1]  G. Manzolini,et al.  CO2 capture from combined cycles integrated with Molten Carbonate Fuel Cells , 2010 .

[2]  Stefano Campanari,et al.  Carbon dioxide separation from high temperature fuel cell power plants , 2002 .

[3]  Eric Croiset,et al.  Simulation of a tubular solid oxide fuel cell stack using AspenPlusTM unit operation models , 2004 .

[4]  Richard D. Marshall,et al.  An Electrochemical Device for Carbon Dioxide Concentration. I. System Design and Performance , 1974 .

[5]  Stefano Campanari,et al.  Enhancement of the Electrical Efficiency of Commercial Fuel Cell Units by Means of an Organic Rankine Cycle: A Case Study , 2013 .

[6]  Francesco Calise,et al.  Simulation and exergy analysis of a hybrid Solid Oxide Fuel Cell (SOFC)–Gas Turbine System , 2006 .

[7]  Paolo Chiesa,et al.  CO2 cryogenic separation from combined cycles integrated with molten carbonate fuel cells , 2011 .

[8]  Jung-Ho Wee,et al.  Contribution of fuel cell systems to CO2 emission reduction in their application fields , 2010 .

[9]  Roberto Saia,et al.  Study of Gas-steam Combined Cycle Power Plants Integrated with MCFC for Carbon Dioxide Capture☆ , 2014 .

[10]  Paolo Chiesa,et al.  Economic analysis of CO2 capture from natural gas combined cycles using Molten Carbonate Fuel Cells , 2014 .

[11]  A. Brito-Melo,et al.  IEA-OES International Energy Agency Implementing Agreement on Ocean Energy Systems annual report 2008 , 2009 .

[12]  F. R. McLarnon,et al.  Fuel cells: A handbook , 1988 .

[13]  R. Remick,et al.  Molten Carbonate and Phosphoric Acid Stationary Fuel Cells: Overview and Gap Analysis , 2010 .

[14]  A Amorelli,et al.  An Experimental Investigation Into the Use of Molten Carbonate Fuel Cells to Capture CO2 from Gas Turbine Exhaust Gases , 2004 .

[15]  Giovanni Lozza,et al.  Application of MCFC in coal gasification plants for high efficiency CO2 capture , 2012 .

[16]  E. Yantovsky,et al.  Zero Emissions Power Cycles , 2009 .