SCI和EI收录∣中国化工学会会刊

Chinese Journal of Chemical Engineering ›› 2022, Vol. 48 ›› Issue (8): 98-105.DOI: 10.1016/j.cjche.2021.11.015

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Investigation of the redox performance of pyrite cinder calcined at different temperature in chemical looping combustion

Zhong Ma1,2, Guofu Liu3, Hui Zhang4, Yonggang Lu1   

  1. 1. School of Energy & Power Engineering, Jiangsu University, Zhenjiang 212013, China;
    2. State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China;
    3. School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China;
    4. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
  • Received:2021-05-25 Revised:2021-11-01 Online:2022-09-30 Published:2022-08-28
  • Contact: Zhong Ma,E-mail:zhongma@ujs.edu.cn
  • Supported by:
    This work was supported by the China Postdoctoral Science Foundation (2020M681503) and Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (2021-K56).

Investigation of the redox performance of pyrite cinder calcined at different temperature in chemical looping combustion

Zhong Ma1,2, Guofu Liu3, Hui Zhang4, Yonggang Lu1   

  1. 1. School of Energy & Power Engineering, Jiangsu University, Zhenjiang 212013, China;
    2. State Key Laboratory of High-Efficiency Utilization of Coal and Green Chemical Engineering, Ningxia University, Yinchuan 750021, China;
    3. School of Energy and Power Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China;
    4. State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan 750021, China
  • 通讯作者: Zhong Ma,E-mail:zhongma@ujs.edu.cn
  • 基金资助:
    This work was supported by the China Postdoctoral Science Foundation (2020M681503) and Foundation of State Key Laboratory of High-efficiency Utilization of Coal and Green Chemical Engineering (2021-K56).

Abstract: As an industrial solid waste, pyrite cinder exhibited excellent reactivity and cycle stability in chemical looping combustion. Prior to the experiment, oxygen carriers often experienced a high temperature calcination process to stabilize the physico-chemical properties, which presented significant influence on the redox performance of oxygen carriers. However, the effect of calcination temperature on the cyclic reaction performance of pyrite cinder has not been studied in detail. In this work, the effect of calcination temperature on the redox activity and attrition characteristic of pyrite cinder were studied in a fluidized-bed reactor using CH4 as fuel. A series of pyrite cinder samples were prepared by controlling the calcination temperature. The redox activity and attrition rate of the obtained pyrite cinder samples were investigated deeply. The results showed that calcination temperature displayed significant impact on the redox performance of pyrite cinder. Considering CH4 conversion (80%–85%) and attrition resistance, the pyrite cinder calcined at 1050?℃ presented excellent redox properties. In the whole experiment process, the CO2 selectivity of the pyrite cinder samples were not affected by the calcination temperature and were still close to 100%. The results can provide reference for optimizing the calcination temperature of pyrite cinder during chemical looping process.

Key words: Chemical looping combustion, Pyrite cinder, Calcination temperature, CO2 capture, Attrition, Waste treatment

摘要: As an industrial solid waste, pyrite cinder exhibited excellent reactivity and cycle stability in chemical looping combustion. Prior to the experiment, oxygen carriers often experienced a high temperature calcination process to stabilize the physico-chemical properties, which presented significant influence on the redox performance of oxygen carriers. However, the effect of calcination temperature on the cyclic reaction performance of pyrite cinder has not been studied in detail. In this work, the effect of calcination temperature on the redox activity and attrition characteristic of pyrite cinder were studied in a fluidized-bed reactor using CH4 as fuel. A series of pyrite cinder samples were prepared by controlling the calcination temperature. The redox activity and attrition rate of the obtained pyrite cinder samples were investigated deeply. The results showed that calcination temperature displayed significant impact on the redox performance of pyrite cinder. Considering CH4 conversion (80%–85%) and attrition resistance, the pyrite cinder calcined at 1050?℃ presented excellent redox properties. In the whole experiment process, the CO2 selectivity of the pyrite cinder samples were not affected by the calcination temperature and were still close to 100%. The results can provide reference for optimizing the calcination temperature of pyrite cinder during chemical looping process.

关键词: Chemical looping combustion, Pyrite cinder, Calcination temperature, CO2 capture, Attrition, Waste treatment