Fuel cell-turbocharged internal combustion engine hybrid power generation system

Abstract

The invention provides a fuel cell-turbocharged internal combustion engine hybrid power generation system. A fuel gas compressor, a desulfurizer, a fuel heat exchanger and a mixer of the power generation system are sequentially connected; an air compressor is connected with an air heat exchanger; a reformer is connected with a water vaporizer, the mixer and the anode of a fuel cell; the cathode ofthe fuel cell is connected with the air heat exchanger; the anode of the fuel cell is connected with the mixer and the high-temperature inlet end of the fuel heat exchanger, the fuel inlet end of theinternal combustion engine is connected with the cooler outlet, a fuel bypass and the air compressor outlet, the acting working medium output end of the internal combustion engine is connected with the turbine input end, and the internal combustion engine is connected with the engine. The problems that a large amount of fuel remains in the tail gas of the solid oxide fuel cell and the combustionefficiency is not high are solved, the fuel cell and the internal combustion engine are combined, the power generation power can be rapidly adjusted within a large range, and 70% or above of the powergeneration efficiency can be achieved.

Description

technical field [0001] The invention relates to a fuel cell-turbocharged internal combustion engine hybrid power generation system, which belongs to the technical field of thermal cycle devices for power generation systems. Background technique [0002] With the widespread use of indirect energy sources such as solar and wind energy, more and more peak load pressure is placed on the grid. For optimal efficiency, these load transients must be tracked as closely as possible to avoid wasting energy. Centralized power plants such as combined cycle power plants, while highly efficient, suffer from inefficiencies in power generation and potential overgeneration-related losses when operating at part load. As a result, there has recently been a greater focus on on-site or distributed energy distribution strategies. Distributed power generation not only has better variable working condition performance, but also can reduce transmission loss, which accounts for about 5-8% of the ener...

AI Technical Summary

Problems solved by technology

The efficiency of the fuel cell gas turbine hybrid power generation system can reach more than 70%; however, the performance of changing working conditions is poor, and the response time is long, so it is not suitable for the field of distributed power generation that requires frequent changing working conditions and quick start

Images