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

A gas turbine and compound power technology, applied in the field of compound power system, can solve the problems of pollution gas emission and low efficiency, and achieve the effect of low CO2 emission

A gas turbine and compound power technology, applied in the field of compound power system, can solve the problems of pollution gas emission and low efficiency, and achieve the effect of low CO2 emission

CN103206307AActive Publication Date: 2013-07-17NORTH CHINA ELECTRIC POWER UNIV (BAODING)
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  • Hybrid power system using normal pressure MCFC (molten carbonate fuel cell) to recover CO2 in exhaust gas of gas turbine
  • Hybrid power system using normal pressure MCFC (molten carbonate fuel cell) to recover CO2 in exhaust gas of gas turbine
  • Hybrid power system using normal pressure MCFC (molten carbonate fuel cell) to recover CO2 in exhaust gas of gas turbine

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Embodiment Construction

[0021] The invention provides a method for recovering CO in gas turbine exhaust gas by using atmospheric MCFC 2 Achieve low CO for gas turbines 2 The emission compound power system, the present invention will be further described below with reference to the description of the drawings and specific implementations.

[0022] No CO recovery 2 The benchmark system of gas-steam combined cycle system is such as figure 1 Shown: The first air and the first fuel are compressed by the first air compressor 1 and the fuel compressor 2 and then sent to the combustion chamber 3 for combustion, and then used by the turbine 4 for power generation. The generator 20a generates power and outputs it at high temperature. The exhaust gas enters the waste heat boiler and steam turbine system 17 to generate steam to drive the steam turbine to produce power, which is generated and output by the generator 20c, and finally the low-temperature exhaust gas is directly discharged into the atmosphere.

[0023] Th...

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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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Claims

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Application Information

Patent Timeline
17 Jul 2013
Publication
CN103206307A