Synergistic investigation for co-combustion of biochars and lignite-thermogravimetric analysis approach


Haykiri-Acma H., Yaman S.

Journal of Thermal Science and Engineering Applications, vol.11, no.1, 2019 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 11 Issue: 1
  • Publication Date: 2019
  • Doi Number: 10.1115/1.4040992
  • Journal Name: Journal of Thermal Science and Engineering Applications
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Keywords: biochar, biomass, lignite, burning kinetics, synergy, STEAM CO-GASIFICATION, BITUMINOUS COAL, BLENDED CHAR, BIOMASS, REACTIVITY, PYROLYSIS, TEMPERATURES, TORREFACTION, KINETICS, MANURE
  • Istanbul Technical University Affiliated: Yes

Abstract

© 2019 by ASME.This paper addresses whether synergistic interaction or additive behavior govern the cocombustion characteristics of lignite and biochars produced from hybrid poplar (HP), ash tree (AT), and rhododendron (RH). The biochars were blended with lignite and the burning behavior was investigated by thermal analysis. Upon carbonization, fundamental change occurred in the burning mechanisms of biomass from homogeneous to heterogeneous reactions. Blending the lignite with biochars led to improvement in the calorific value and reductions in the ash yield. Carbonization limited the high reactivity of biomass, and the reactivities of biochars became closer to the lignite's reactivity, consequently they burned in accord without segregation.