Multi-objective optimization of molten carbonate fuel cell system for reducing CO_2 emission from exhaust gases

摘要

The aim of this paper is to investigate the implementation of a molten carbonate fuel cell (MCFC) as a CO_2 separator. By applying multi-objective optimization (MOO) using the genetic algorithm, the optimal values of operating load and the corresponding values of objective functions are obtained. Objective functions are minimization of the cost of electricity (COE) and minimization of CO_2 emission rate. CO_2 tax that is accounted as the pollution-related cost, transforming the environmental objective to the cost function. The results show that the MCFC stack which is fed by the syngas and gas turbine exhaust, not only reduces CO_2 emission rate, but also produces electricity and reduces environmental cost of the system.