Abstract
The aim of this study is to find a simple, effective, and non-destructive way to estimate the fluidity of coal. Three kinds of metallurgical coals were blended in a specific ratio for fluidity measurement by a Gieseler plastometer and coke strength by the Roga test. One of the metallurgical coals was extracted with four kinds of solvents. The solvent-extracted extracts further underwent heat treatment at different temperatures and were then added to the blended coal to examine the change of fluidity and coke strength. Both the heat-treated and untreated coal extracts were further investigated by elemental analysis, thermogravimetric analysis, solid-state 13C nuclear magnetic resonance, and X-ray diffractometry, and it was found that the heat treatment will increase the degree of graphitization. The aromatic carbon content was found to correlate significantly with the fluidity of coal, and the relationship among the ratio of aromatic carbon/aliphatic carbon, aromaticity, and fluidity was studied in this work. Finally, X-ray diffractometry is suggested to be a non-destructive method to estimate the fluidity of coal.
| Original language | English |
|---|---|
| Pages (from-to) | 11947-11953 |
| Number of pages | 7 |
| Journal | Energy and Fuels |
| Volume | 31 |
| Issue number | 11 |
| DOIs | |
| Publication status | Published - 2017 Nov 16 |
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All Science Journal Classification (ASJC) codes
- Chemical Engineering(all)
- Fuel Technology
- Energy Engineering and Power Technology
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Thermoplastic Properties of Coal and Coal Extract. / Chu, Chia Ching; Chang, Chih Min; Wang, Der Her; Whang, Thou-Jen.
In: Energy and Fuels, Vol. 31, No. 11, 16.11.2017, p. 11947-11953.Research output: Contribution to journal › Article
TY - JOUR
T1 - Thermoplastic Properties of Coal and Coal Extract
AU - Chu, Chia Ching
AU - Chang, Chih Min
AU - Wang, Der Her
AU - Whang, Thou-Jen
PY - 2017/11/16
Y1 - 2017/11/16
N2 - The aim of this study is to find a simple, effective, and non-destructive way to estimate the fluidity of coal. Three kinds of metallurgical coals were blended in a specific ratio for fluidity measurement by a Gieseler plastometer and coke strength by the Roga test. One of the metallurgical coals was extracted with four kinds of solvents. The solvent-extracted extracts further underwent heat treatment at different temperatures and were then added to the blended coal to examine the change of fluidity and coke strength. Both the heat-treated and untreated coal extracts were further investigated by elemental analysis, thermogravimetric analysis, solid-state 13C nuclear magnetic resonance, and X-ray diffractometry, and it was found that the heat treatment will increase the degree of graphitization. The aromatic carbon content was found to correlate significantly with the fluidity of coal, and the relationship among the ratio of aromatic carbon/aliphatic carbon, aromaticity, and fluidity was studied in this work. Finally, X-ray diffractometry is suggested to be a non-destructive method to estimate the fluidity of coal.
AB - The aim of this study is to find a simple, effective, and non-destructive way to estimate the fluidity of coal. Three kinds of metallurgical coals were blended in a specific ratio for fluidity measurement by a Gieseler plastometer and coke strength by the Roga test. One of the metallurgical coals was extracted with four kinds of solvents. The solvent-extracted extracts further underwent heat treatment at different temperatures and were then added to the blended coal to examine the change of fluidity and coke strength. Both the heat-treated and untreated coal extracts were further investigated by elemental analysis, thermogravimetric analysis, solid-state 13C nuclear magnetic resonance, and X-ray diffractometry, and it was found that the heat treatment will increase the degree of graphitization. The aromatic carbon content was found to correlate significantly with the fluidity of coal, and the relationship among the ratio of aromatic carbon/aliphatic carbon, aromaticity, and fluidity was studied in this work. Finally, X-ray diffractometry is suggested to be a non-destructive method to estimate the fluidity of coal.
UR - http://www.scopus.com/inward/record.url?scp=85034569147&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85034569147&partnerID=8YFLogxK
U2 - 10.1021/acs.energyfuels.7b02327
DO - 10.1021/acs.energyfuels.7b02327
M3 - Article
AN - SCOPUS:85034569147
VL - 31
SP - 11947
EP - 11953
JO - Energy & Fuels
JF - Energy & Fuels
SN - 0887-0624
IS - 11
ER -