Modeling of the Chemical Looping Combustion of Hard Coal and Biomass Using Ilmenite as the Oxygen Carrier

Energies

MarcioL.de Souza-Santos¹  Wojciech Nowak²  Karol Sztekler²  Anna Zylka³  Marcin Sosnowski³  Jaroslaw Krzywanski³  Kamil Idziak⁴  Tomasz Czakiert⁴ 

[1] Department of Energy, School of Mechanical Engineering, University of Campinas, Campinas, SP 13083-970, Brazil;Faculty of Energy and Fuels, AGH University of Science and Technology, 30-059 Cracow, Poland;Faculty of Science and Technology, Jan Dlugosz University in Czestochowa, 42-200 Czestochowa, Poland;Institute of Advanced Energy Technologies, University of Technology, 42-201 Czestochowa, Poland;

关键词: chemical looping combustion;    CeSFaMB;    ilmenite;    oxygen carrier;    hard coal;    biomass;   

DOI  :  10.3390/en13205394

来源: DOAJ

【 摘 要 】

This paper presents a 1.5D model of a fluidized bed chemical looping combustion (CLC) built with the use of a comprehensive simulator of fluidized and moving bed equipment (CeSFaMB) simulator. The model is capable of calculating the effect of gas velocity in the fuel reactor on the hydrodynamics of the fluidized bed and the kinetics of the CLC process. Mass of solids in re­actors, solid circulating rates, particle residence time, and the number of particle cycles in the air and fuel reactor are considered within the study. Moreover, the presented model calculates essential emissions such as CO₂, SO_X, NO_X, and O₂. The model was successfully validated on experimental tests that were carried out on the Fluidized-Bed Chemical-Looping-Combustion of Solid-Fuels unit located at the Institute of Advanced Energy Technologies, Czestochowa University of Technology, Poland. The model’s validation showed that the maximum relative errors between simulations and experiment results do not exceed 10%. The CeSFaMB model is an optimum compromise among simulation accuracy, computational resources, and processing time.

【 授权许可】

Unknown