| The problems of power quality,environmental effect and energy utilization efficiency brought by large power stations and large power grids have not been solved.With the development of society,the concept of distributed energy system has been put forward in developed countries.Micro gas turbine is the most mature distributed power supply.The molten carbonate fuel cell(MCFC)also can be used as a distributed power source due to its modularity.In this paper,an advanced MCFC/MGT hybrid system is studied on Aspen Plus software.This paper consists of four parts.In the first part,the significance of the research and the study of MCFC at home and abroad as well as Aspen Plus software are briefly introduced.In the second part,a new MCFC/MGT hybrid power system is studied.The results show that the efficiency of the new system is increased by 0.66%compared with old system under design condition.The operation strategy of the new system is flexible and reduce the compressor speed is the most effective method under off-design conditions.In the third part,the emission reduction of hybrid power system was studied.Two kinds of hybrid power systems with zero CO2 emission are proposed innovatively.Then their sensitivity analysis which including current density and fuel efficiency was achieved.In the fourth part,a new zero-emission hybrid power system is proposed by integrating oxygen ion transport membrane(OTM).The new system is more efficient than other zero-emission systems.Then the exergy analysis and the economic analysis of new system are studied.The results of this paper will be useful reference for the study of the MCFC/MGT hybrid power system with high efficiency and environmental protection. |
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