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The summary of "Coal-gas fuel cell combined cycle power generation demonstration business" carries out verification of the second stage from 2016.
NEDO announced on April 4, 2016 that, starting from 2016, the "oxygen-blasted coal-fired combined cycle power (Oxygen IGCC) verification test equipment with CO2 separation and recovery equipment, That is, "CO2 separation recovery type oxygen IGCC" implementation verification. The goal is to achieve a CO2 recovery rate of 90% for oxygen-blown IGCC, and to achieve the same net thermal efficiency (high calorific value) as the current pulverized coal power generation, ie 40%.
This verification project is part of the “Coalification of Fuel Cell Combined Cycle Power Generation Verification Project†that aims to significantly reduce CO2 emissions from coal-fired power generation. The purpose of this project is to achieve "Coal-Gas-Gasification-Fuel-Cell Combined Cycle Power Generation (IGFC)" that combines coal gasification fuel cells, gas turbines, and steam turbines in three forms of power generation, and low-carbon coal combined with CO2 separation and recovery. Thermal power generation.
The first phase of the work started in fiscal year 2012 was to establish a verification test facility for oxygen-blowing IGCC that supplies oxygen to a coal gasifier and implements combined gas turbine and steam turbine power generation in the Osaki Power Plant. The equipment was commissioned in 2015 and is scheduled to be officially put into operation in March 2017.
In the second phase of 2016, the CO2 separation and recovery type oxygen IGCC consisting of equipment for the separation and recovery of oxygen-blown IGCC and CO2 from the aspects of performance, availability, reliability and economic benefits of the coal fire system will be verified. Energy loss during CO2 recovery will be studied, leading to a problem of low power generation efficiency.
The third phase of the plan is to start the CO2 segregation and recovery type IGCC equipment that was added to the fuel cell in 2018, that is, the verification business of "CO2 separation and recovery type IGFC". After this, large-scale IGFC technology will be established around 2025 with technologies for additional development of large-scale and commercial equipment and the results of gas turbine fuel cell combined cycle power generation technologies developed by other businesses. The goal is to achieve a net thermal efficiency of 55%. The unit CO2 emissions are reduced to around 590g-CO2/kWh (about 30% lower than the current level). (Special Contributor: Kudosuke)
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