基于吸附强化重整制氢的燃料电池-涡轮混合发电系统性能研究

To avoid the high CO₂ concentration in the reformer of the fuel cell-gas turbine hybrid power generation system with anode exhaust recirculation caused by the hydrocarbon fuel with high carbon content, the absorption enhanced reforming with calcium oxide as the sorbent is applied to the system. The fuel of the system is dodecane, and the thermodynamic calculation of the reforming process is completed by the Gibbs free energy minimization method. The results show that the generation efficiency and output power of the system with absorption enhanced reforming are increased by 3.93% and 19.17% respectively, and the CO₂ emission is reduced by 66.46%. When the SOFC temperature is 1023∼1063 K and the calcium to carbon ratio is 0.4∼0.8, the performance of the system is significantly improved with the increase of parameters. However, the increase of these parameters affects the safe operation of the SOFC and the system, so the selection of parameters needs to be comprehensively considered.