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In-situ catalytic pyrolysis of lignin in a bench-scale fixed bed pyrolyzer

  • Shafaghat, Hoda (School of Environmental Engineering, University of Seoul) ;
  • Rezaei, Pouya Sirous (School of Environmental Engineering, University of Seoul) ;
  • Ro, Donghoon (School of Environmental Engineering, University of Seoul) ;
  • Jae, Jungho (Clean Energy Research Center, Korea Institute of Science and Technology) ;
  • Kim, Beom-Sik (School of Environmental Engineering, University of Seoul) ;
  • Jung, Sang-Chul (Department of Environmental Engineering, Sunchon National University) ;
  • Sung, Bong Hyun (Bioenergy & Biochemical Research Center, Korea Research Institute of Bioscience & Biotechnology) ;
  • Park, Young-Kwon (School of Environmental Engineering, University of Seoul)
  • Received : 2017.03.06
  • Accepted : 2017.06.17
  • Published : 2017.10.25

Abstract

Thermal and in-situ catalytic pyrolysis of lignin were carried out in a bench-scale pyrolyzer. The yield and composition of the bio-oil produced were influenced largely by the type of lignin samples, pyrolysis temperature, and nitrogen carrier gas flow rate. The highest bio-oil yield of 35.95 wt.% was achieved using kraft lignin at $500^{\circ}C$ and a carrier gas flow rate of 600 ml/min. In-situ catalytic pyrolysis resulted in a decrease of the bio-oil yield, but the aromatic product distribution was altered greatly depending on the types of catalysts. In-situ catalytic pyrolysis also showed enhanced selectivity to valuable aromatic hydrocarbons.

Keywords

Acknowledgement

Supported by : Korea Institute of Energy Technology Evaluation and Planning (KETEP), National Research Council of Science & Technology (NST)

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