Chem. J. Chinese Universities ›› 2018, Vol. 39 ›› Issue (3): 506.doi: 10.7503/cjcu20170577

• Physical Chemistry • Previous Articles     Next Articles

Chemical Looping Combustion Characteristics of Fe2O3(104) and CO Under Synergistic Action of ZrO2/TiO2 Carrier

CHENG Weiliang1,*(), ZHU Mengqian1, QIN Wu2,*(), HOU Cuicui2   

  1. 1. School of Energy Power and Mechanical Engineering, North China Electric Power University, Beijing 102206, China
    2. National Engineering Laboratory for Biomass Power Generation Equipment, School of Renewable Energy,North China Electric Power University, Beijing 102206, China
  • Received:2017-08-24 Online:2018-03-10 Published:2018-01-23
  • Contact: CHENG Weiliang,QIN Wu E-mail:cwl@ncepu.edu.cn;qinwu@ncepu.edu.cn
  • Supported by:
    † Supported by the National Natural Science Foundation of China(No.51476056) and the Fundamental Research Funds for the Central Universities, China(No.2016YQ07)

Abstract:

This work focused on the synergetic effect of the supports TiO2 and ZrO2 on the chemical looping combustion(CLC) between Fe2O3(104) and CO. Fe2O3(104)/TiO2 and Fe2O3(104)/ZrO2 were prepared, and characterized by means of XRD, SEM and BET. Then, the CLC reactions between the prepared oxygen carrier and CO were studied under 700, 800 and 900 ℃ in a small CLC reaction system, the results suggest that the supports affect the reactivity of Fe2O3(104), and ZrO2 is more efficient than TiO2. Furthermore, dynamic analysis shows that the reaction between Fe2O3(104)/TiO2 and CO could be assigned to the first order reaction model with the apparent activation energy(E) being 153.6 kJ/mol, while the reaction between Fe2O3(104)/ZrO2 and CO belongs to the Shrink sphere reaction model with E being 118.9 kJ/mol. This work provides more reasonable dynamic model for the designing of CLC reactor.

Key words: Chemical looping combustion, Oxygen carrier, Fe2O3(104), Chemical reaction kinetics

CLC Number: 

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