Hybrid power system using normal pressure MCFC (molten carbonate fuel cell) to recover CO2 in exhaust gas of gas turbine

Abstract

The invention belongs to the technical field of power generation of hybrid power of an MCFC (molten carbonate fuel cell), and particularly relates to a hybrid power system using a normal pressure MCFC to recover CO2 in exhaust gas of a gas turbine. According to the hybrid power system disclosed by the invention, a gas-steam combined cycle system which does not recover the CO2 is taken as a reference system, and then an integrated scheme utilizing the MCFC to capture the CO2 is proposed. The hybrid power system comprises a gas turbine, an MCFC, an oxygen ion transport film, a high-temperature air turbine, a residual heat boiler and a CO2 recovery unit, and low-CO2 emission of the gas turbine is further realized. Products of an after-combustion chamber of the MCFC only comprise CO2 and H2O, and the loss of power is reduced during the separation and storage processes of the CO2; and the hybrid power system disclosed by the invention fully utilizes residual heat in the high-temperature exhaust gas of the gas turbine and a component thereof, namely the greenhouse gas CO2, as well as the residual heat in the high-temperature exhaust gas of the MCFC and an OTM (optical touch module), and the CO2 in the exhaust gas of the gas turbine can be recovered by utilizing the MCFC with low energy consumption.

Description

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AI Technical Summary

Benefits of technology

This patented technology can help reduce emissions from industrial engines by reducing harmful gases such as nitrogen oxide (NOx). By combining this process with an energy source like melted coal or hydrocarbon fuels, it becomes more efficient at producing less pollution than traditional methods that use fossil-based materials for power generation.

Problems solved by technology

This patented describes different ways that make it possible to efficiently convert chemical energy from fossil fuels like coal or natural gases (NG) into electrical current without generating harmful greenhouse gassing pollution. However, this technology also produces significant amounts of nitrogen oxide (NOx), which are known carcinogenic substances. To reduce these hazards, some researchers propose converting NOX produced during burning diesel engines into useful products such as ammonia fertilisers through various methods called melting carbonates fuel cells (MCFC).

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