P-Graph Methodology for Cost-Effective Reduction of Carbon Emissions involving Fuel Cell Combined Cycles
Advancing the chemical engineering fundamentals
Electrochemical Engineering - II (T2-14b)
Keywords: CO2 Kyoto Protocol, Process Integration, Sequestration, Minimisation; Combined Heat & Power, Combined Energy Cycles
Ferenc Friedler, Petar Varbanov
Faculty of Information Technology, University of Pannonia, Egyetem u. 10, Veszprem, H-8200, Hungary, friedler@dcs.vein.hu, varbanov@dcs.vein.hu
Jiří Klemeš
Centre for Process Integration, CEAS, The University of Manchester, PO Box 88, M60 1QD Manchester, UK, j.klemes@manchester.ac.uk
Suggested topics: CO2 Kyoto Protocol, Process Integration, Sequestration, Minimisation; Combined Heat & Power, Combined Energy Cycles
Combined Cycles (CC) employ heat-based engines only as gas and steam turbines. Fuel Cells (FC) have become researched energy conversion technology choice due to their high electrical efficiency. Significant research efforts have been spent to design Fuel Cell Combined Cycles (FCCC) integrating High-Temperature Fuel Cells (HTFC) with steam and gas turbines. Preliminary results indicated that achieving the high efficiency (Massardo and Bosio, 2002) and economic viability (Varbanov et al., 2006) is possible.
This comes in the period when the global warming caused by the huge amounts of anthropogenic CO2 emissions is considered as a major issue. This demands an introduction of tools accelerating the implementation of the new energy technologies FCCC. One of efficient methodologies for Process Network Synthesis is based on the P-Graph (Process Graph) (Liu et al., 2004).
In this contribution, P-Graph methodology is applied for the optimal choice and implementation of FCCC. Various types of CC have been considered combining FC- MCFC, SOFC, steam turbines and Gas Turbines. They are evaluated and optimised by the P-Graph representation. As a result a methodology for the synthesis of cost-optimal FCCC configurations has been developed and is presented.
ACKNOWLEDGEMENTS
The financial support from the European Community EMINENT2 project TREN/05/FP6EN/S07.56209/019886 is gratefully acknowledged.
REFERENCES
Massardo, A.L., Bosio, B., 2002, Assessment of Molten Carbonate Fuel Cell Models and Integration with Gas and Steam Cycles, J of Eng for Gas Turb and Power, 124, 103-09
Varbanov, P. Klemeš, J, Shah, R.K., Shihn, H., 2006, Power Cycle Integration and Efficiency Increase of Molten Carbonate Fuel Cell Systems, Journal of Fuel Cells Science and Technology, 3(4), 375-83
Liu, J., Fan, L.T., Seib, P., Friedler, F., Bertok, B., 2004, Downstream Process Synthesis for Biochemical Production of Butanol, Ethanol, and Acetone from Grains: Generation of Optimal and Near-Optimal Flowsheets with Conventional Operating Units, Biotechnol. Prog., 20, 1518-1527.
See the full pdf manuscript of the abstract.
Presented Wednesday 19, 11:40 to 12:00, in session Electrochemical Engineering -II (T2-14b).
