Kinetics of gasification of coal, biomass and their blends in air (N2/O2) and different oxy-fuel (O2/CO2) atmospheres

Muhammad Faisal Irfan, Arash Arami-Niya, Mohammed Harun Chakrabarti, Wan Mohd Ashri Wan Daud, Muhammad Rashid Usman

Research output: Contribution to journalArticle

48 Citations (Scopus)

Abstract

Kinetics of bituminous coal and palm shells were evaluated using thermo-gravimetric analysis under different environments (N2/CO2/O2). The observed percent mass loss of biomass was higher than mass loss percentage of coal because biomass had higher reactivity and volatile matter content. Ignition temperatures of pure coal, biomass and their blends were also investigated and it was observed that biomass blends had improved ignition properties in both air and oxy-fuel environments. However, the combustion mechanism wasn't affected. Different mixtures of CO2/O2 were also used on 10% palm shell-90% coal samples and compared with air as the reference. At the same composition of oxygen in oxy-fuel as that of simulated air, ignition temperatures were slightly higher and mass loss percentages were marginally lower. However, this difference due to heat capacities of N2 and CO2 was meager and was considered negligible. Upon increasing O2 content, lower ignition temperatures were observed. Kinetics of coal, palm shell and their blends were determined at different gas mixture compositions using Doyle's and Coats-Redfern's models. For both models, E was found to decrease with increasing palm shell composition in coal as well as increasing O2 concentration in oxy-fuel. However, a reverse trend was observed for the pre-exponentional factor(A).

Original languageEnglish
Pages (from-to)665-672
Number of pages8
JournalEnergy
Volume37
Issue number1
DOIs
Publication statusPublished - 2012

Keywords

  • Coal
  • Coats-Redfern
  • Doyle
  • Oxy-fuel
  • Palm shell

ASJC Scopus subject areas

  • Civil and Structural Engineering
  • Building and Construction
  • Pollution
  • Energy(all)
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'Kinetics of gasification of coal, biomass and their blends in air (N<sub>2</sub>/O<sub>2</sub>) and different oxy-fuel (O<sub>2</sub>/CO<sub>2</sub>) atmospheres'. Together they form a unique fingerprint.

  • Cite this