Syngas Production by Chemical-Looping Gasification of Waste Activated Carbon with Iron-Based Oxygen Carrier

Authors

  • Xiao Li Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR China
  • An Mei State Key Laboratory of High-efficiency Coal Utilization and Green Chemical Engineering, College of Chemistry and Chemical Engineering, Ningxia University, Yinchuan, PR China
  • Man Wu Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR China
  • Jinshuai Li Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR China
  • Xiuli Zhang Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR China
  • Qiang Fangyuan Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR China
  • Jilai Wu Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR China
  • Sijie Yuan Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR China
  • Qingjie Guo Key Laboratory of Clean Chemical Processing of Shandong Province, College of Chemical Engineering, Qingdao University of Science and Technology, Qingdao, PR China https://orcid.org/0000-0001-6806-2089

DOI:

https://doi.org/10.37256/fce.3120221220

Keywords:

chemical looping gasification, cyclic properties, iron-based oxygen carrier, synthesis gas, waste activated carbon

Abstract

Waste Activated Carbon (WAC), as a typical solid waste, can be utilized by Chemical-Looping Gasification (CLG) technology with an iron-based Oxygen Carrier (OC) to produce valuable synthesis gas. A series of experiments on WAC of the CLG process has been performed in a fixed-bed reactor. The operation parameters and cyclic performance of the iron-based OC have been investigated during CLG reactions. Fresh and cyclic reaction OC samples have been analyzed by X-Ray Diffraction (XRD) and Scanning Electron Microscopy (SEM). To obtain high-quality syngas with high carbon conversion, the optimal OC/WAC mole ratio, steam flow rate and reaction temperature are 0.1, 0.10 mL/min, and 950 °C, respectively. The iron-based OC exhibits a stable cyclic performance during multiple tests, following the reaction path of Fe2O3 to Fe0.98O in the individual reduction process. Moreover, the iron-based OC is oxidized to almost its initial state after 10 redox tests without obvious sintering and agglomeration phenomena. The WAC of CLG provides a new approach to the comprehensive usage of solid waste, especially with low volatile feedstock.

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Published

2022-01-25

How to Cite

(1)
Xiao Li; An Mei; Man Wu; Jinshuai Li; Xiuli Zhang; Qiang Fangyuan; Jilai Wu; Sijie Yuan; Qingjie Guo. Syngas Production by Chemical-Looping Gasification of Waste Activated Carbon With Iron-Based Oxygen Carrier. Fine Chemical Engineering 2022, 3, 84-95.