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A coal-fired power plant integrated with biomass co-firing and co_(2) capture for zero carbon emission

Frontiers in Energy 2022年第2期16卷 307-320页

作者： Xiaojun XUE Yuting WANG Heng CHEN Gang XU Beijing Key Laboratory of Emission Surveillance and control for Thermal Power Generation North China Electric Power UniversityBeijing 102206China

A promising scheme for coal-fired power plants in which biomass co-firing and carbon dioxide capture technologies are adopted and the low-temperature waste heat from the co_(2) capture process is recycled to heat the condensed water to achieve zero carbon emission is proposed in this *** on a 660 MW supercritical coal-fired power plant,the thermal performance,emission performance,and economic performance of the proposed scheme are *** addition,a sensitivity analysis is conducted to show the effects of several key parameters on the performance of the proposed *** results show that when the biomass mass mixing ratio is 15.40%and the co_(2) capture rate is 90%,the co_(2) emission of the coal-fired power plant can reach zero,indicating that the technical route proposed in this paper can indeed achieve zero carbon emission in coal-fired power *** net thermal efficiency decreases by 10.31%,due to the huge energy consumption of the co_(2) capture ***,the cost of electricity(coE)and the cost of co_(2) avoided(coA)of the proposed system are 80.37/MWhand41.63/tco_(2),*** sensitivity analysis demonstrates that with the energy consumption of the reboiler decreasing from 3.22 GJ/tco_(2) to 2.40 GJ/tco_(2),the efficiency penalty is reduced to 8.67%.This paper may provide reference for promoting the early realization of carbon neutrality in the power generation industry.

关键词： coal-fired power plant biomass co-firing co_(2)capture zero carbon emission performance evaluation

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Field and CFD Study of Fuel Distribution in Pulverized Fuel(PF)Boilers

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Journal of Thermal Science 2020年第3期29卷 535-545页

作者： CIUKAJ Szymon HERNIK Bartlomiej Institute of Power Engineering and Turbomachinery Silesian University of Technology(SUT)Konarskiego 2044-101 GliwicePoland

The article presents both field and CFD results of a new concept of a mechanical pulverized fuel(PF)*** goal of the study was to improve the pulverized coal-air mixture separation in PF boilers where the fuel preparation and feeding system was operated in a combined coal and biomass grinding *** numerical analysis was preceded after a field study,where measurements were carried out in a pulverized coal-fired(PC)boiler equipped with a technology of NOx reduction by means of primary *** distribution of a pulverized coal-air mixture to the individual burners is one of the fundamental tasks of the combustion systems where the primary methods are implemented to control the NOx *** maintaining the proper distribution of fuel to the burners related primarily to the boilers where the coal and biomass co-grinding is *** the load of coal-mills and fuel type at the same time(i.e.,different types of biomass)could result in less effective separation of pulverized fuel particles in PF *** of an appropriate construction of a distributor will allow the better control of the combustion process which results in decreased NOx emission while keeping the proper combustion efficiency,i.e.,less unburned carbon(UBC)in the fly *** results of the field measurements made it possible to create a CFD distribution base model,which was used for the analysis of a new splitter construction to be used in a PF *** analysis of the numerical splitter enables precise analysis of its construction,including the efficiency of separation and the prediction of conveying of the coal and biomass particles.

关键词： pulverized fuel(PF)boiler NOx reduction biomass co-firing fuel distribution

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