Marine solid oxide fuel cell and steam-injected gas turbine combined generating system and marine solid oxide fuel cell and steam-injected gas turbine combined generating method

Abstract

The invention discloses a marine solid oxide fuel cell and steam-injected gas turbine combined generating system and a marine solid oxide fuel cell and steam-injected gas turbine combined generating method. The air input port of the air compressor of the system is used for introducing air, the air output port of the air compressor is connected with a heat regenerator, the gas output end of the heat regenerator is connected with a cell stack cathode, the fuel output end of a fuel bottle is connected with the fuel input end of a pre-reformer, the output end of a distilled water heater is connected with the pre-reformer, the output end of the pre-reformer is connected with a cell stack anode, the anode discharge gas output pipeline and the cathode discharge gas output pipeline of a solid oxide fuel cell are used for a combustion chamber, the exhaust gas output end of the combustion chamber is connected with the gas inlet of a turbine, the gas outlet of the turbine is connected with the gas inlet of the heat regenerator, the exhaust gas outlet of the heat regenerator is connected with a waste heat boiler through an exhaust gas transmission pipeline, and the superheated steam output endof the waste heat boiler is connected with the superheated steam input end of the combustion chamber. The system realizes waste heat utilization of a marine auxiliary boiler.

Description

technical field [0001] The invention relates to the technical field of power supply systems, in particular to a marine solid oxide fuel cell and steam injection gas turbine combined power generation system and method. Background technique [0002] The solid oxide fuel cell (Solid Oxide Fuel Cell, SOFC) carried by ocean-going ships is a medium-high temperature fuel cell, its operating temperature is generally 600-1000 °C, and the exhaust temperature usually exceeds 600 °C. Because it is not limited by the "Carnot cycle", its energy conversion efficiency is much higher than that of ordinary heat engines, as high as 60-80%. Due to the working characteristics of the fuel cell, the fuel cannot be completely oxidized, that is, all the energy in the fuel cannot be converted, so there are still some hydrogen and carbon monoxide in the system exhaust, which greatly wastes energy. Contents of the invention [0003] The purpose of the present invention is to provide a marine solid o...

AI Technical Summary

Problems solved by technology

Due to the working characteristics of the fuel cell, the fuel cannot be completely oxidized, that is, all the energy in the fuel cannot be converted, so there are still some hydrogen and carbon monoxide in the system exhaust, which greatly wastes energy

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