Abstract
Abstract A sample consisting of woody biomass and bituminous coal was pyrolyzed in a lab-scale furnace in a nitrogen atmosphere with the temperature increasing by different heating rates of 5, 10, and 50 C min-1 until the furnace wall temperature reached 900 C. Five blending ratios (BRs) of coal-biomass 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 thermogravimetry (TG) and a real-time gas analyzer (GA). Reactivity, product yield, and activation energy were considered as index parameters to co-pyrolysis. While synergy (the difference between the experimental data and calculated results obtained using an additive model) of the reactivity of co-pyrolysis was observed only at specific temperatures, the TG results showed synergy at temperatures between 450 and 500 C compared to between 450 and 600 C seen with the GA method for all pyrolyzed gases, and especially between 350 and 650 C for H2. While there was no synergy in the char yield of the co-pyrolysis, the liquid and total gas exhibited synergy for all three BRs. The pre-exponential factors and the activation energies of BRs of 0.25, 0.5, and 0.75 were obtained using a kinetic study of co-pyrolysis.
| Original language | English |
|---|---|
| Article number | 4470 |
| Pages (from-to) | 1867-1875 |
| Number of pages | 9 |
| Journal | Journal of Thermal Analysis and Calorimetry |
| Volume | 120 |
| Issue number | 3 |
| DOIs | |
| Publication status | Published - 2015 Jun 26 |
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All Science Journal Classification (ASJC) codes
- Condensed Matter Physics
- Physical and Theoretical Chemistry
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A comprehensive study on co-pyrolysis of bituminous coal and pine sawdust using TG : Reactivity, product yield, and kinetic constant. / Jeong, Hyo Jae; Seo, Dong Kyun; Park, Sang Shin; Hwang, Jungho.
In: Journal of Thermal Analysis and Calorimetry, Vol. 120, No. 3, 4470, 26.06.2015, p. 1867-1875.Research output: Contribution to journal › Article
TY - JOUR
T1 - A comprehensive study on co-pyrolysis of bituminous coal and pine sawdust using TG
T2 - Reactivity, product yield, and kinetic constant
AU - Jeong, Hyo Jae
AU - Seo, Dong Kyun
AU - Park, Sang Shin
AU - Hwang, Jungho
PY - 2015/6/26
Y1 - 2015/6/26
N2 - Abstract A sample consisting of woody biomass and bituminous coal was pyrolyzed in a lab-scale furnace in a nitrogen atmosphere with the temperature increasing by different heating rates of 5, 10, and 50 C min-1 until the furnace wall temperature reached 900 C. Five blending ratios (BRs) of coal-biomass 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 thermogravimetry (TG) and a real-time gas analyzer (GA). Reactivity, product yield, and activation energy were considered as index parameters to co-pyrolysis. While synergy (the difference between the experimental data and calculated results obtained using an additive model) of the reactivity of co-pyrolysis was observed only at specific temperatures, the TG results showed synergy at temperatures between 450 and 500 C compared to between 450 and 600 C seen with the GA method for all pyrolyzed gases, and especially between 350 and 650 C for H2. While there was no synergy in the char yield of the co-pyrolysis, the liquid and total gas exhibited synergy for all three BRs. The pre-exponential factors and the activation energies of BRs of 0.25, 0.5, and 0.75 were obtained using a kinetic study of co-pyrolysis.
AB - Abstract A sample consisting of woody biomass and bituminous coal was pyrolyzed in a lab-scale furnace in a nitrogen atmosphere with the temperature increasing by different heating rates of 5, 10, and 50 C min-1 until the furnace wall temperature reached 900 C. Five blending ratios (BRs) of coal-biomass 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 thermogravimetry (TG) and a real-time gas analyzer (GA). Reactivity, product yield, and activation energy were considered as index parameters to co-pyrolysis. While synergy (the difference between the experimental data and calculated results obtained using an additive model) of the reactivity of co-pyrolysis was observed only at specific temperatures, the TG results showed synergy at temperatures between 450 and 500 C compared to between 450 and 600 C seen with the GA method for all pyrolyzed gases, and especially between 350 and 650 C for H2. While there was no synergy in the char yield of the co-pyrolysis, the liquid and total gas exhibited synergy for all three BRs. The pre-exponential factors and the activation energies of BRs of 0.25, 0.5, and 0.75 were obtained using a kinetic study of co-pyrolysis.
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U2 - 10.1007/s10973-015-4470-y
DO - 10.1007/s10973-015-4470-y
M3 - Article
VL - 120
SP - 1867
EP - 1875
JO - Journal of Thermal Analysis and Calorimetry
JF - Journal of Thermal Analysis and Calorimetry
SN - 1388-6150
IS - 3
M1 - 4470
ER -