The co-pyrolysis of sawdust and bituminous coal using thermogravimetric analysis (TGA) and concentration measurements of the evolved species

Dong Kyun Seo, Sang Sin Park, Hyo Jae Jung, Jungho Hwang

Research output: Contribution to conferencePaper

Abstract

A sample consisting of woody biomass and bituminous coal was pyrolyzed in a lab-scale furnace with a nitrogen atmosphere until the furnace wall temperature reached 900°C at 10°C/min. Five blending ratios(BRs) of biomass-coal were tested. For each BR, the mass loss of the sample and mole fractions of the gaseous species evolved from the sample were measured using a thermogravimetric analyzer(TGA) and a real time gas analyzer(GA), respectively. In order to evaluate the synergistic effect of the co-pyrolysis of the biomass-coal blend on product yield, the cold gas efficiency(CGE) obtained from experimental data was compared with that obtained using an additive model. The TGA results revealed the action of a synergistic effect at temperatures between 450 and 500°C, compared to between 450 and 600°C with the GA method, for all pyrolyzed gases, and especially between 350 and 650°C for H2. The maximum CGE was 0.37 at the BR of 0.75, while the maximum ratio between the experimental CGE and the calculated CGE was 1.52 at the BR of 0.25. In addition, kinetics analysis of co-pyrolysis was conducted and it was found that the activation energies of BRs at the temperature of 390 to 450°C can be predictable using the additive method.

Original languageEnglish
Pages3739-3751
Number of pages13
Publication statusPublished - 2013 Jan 1
Event30th Annual International Pittsburgh Coal Conference 2013, PCC 2013 - Beijing, China
Duration: 2013 Sep 152013 Sep 18

Other

Other30th Annual International Pittsburgh Coal Conference 2013, PCC 2013
CountryChina
CityBeijing
Period13/9/1513/9/18

All Science Journal Classification (ASJC) codes

  • Geochemistry and Petrology
  • Geotechnical Engineering and Engineering Geology

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    Seo, D. K., Park, S. S., Jung, H. J., & Hwang, J. (2013). The co-pyrolysis of sawdust and bituminous coal using thermogravimetric analysis (TGA) and concentration measurements of the evolved species. 3739-3751. Paper presented at 30th Annual International Pittsburgh Coal Conference 2013, PCC 2013, Beijing, China.