- Title
- Experimental study on microwave pyrolysis of an Indonesian low-rank coal
- Creator
- Wang, Nan; Yu, Jianglong; Tahmasebi, Arash; Han, Yanna; Lucas, John; Wall, Terry; Jiang, Yu
- Relation
- Energy & Fuels Vol. 28, Issue 1, p. 254-263
- Publisher Link
- http://dx.doi.org/10.1021/ef401424p
- Publisher
- American Chemical Society
- Resource Type
- journal article
- Date
- 2014
- Description
- Microwave pyrolysis of an Indonesian lignite is investigated in this study. The effects of experimental parameters, such as microwave receptor/coal ratio, residence time, temperature, microwave power level, and coal particle size, on the yield and characteristics of coal pyrolysis products were studied systematically. Fe₃O₄ was used as the microwave receptor. The compositions of oil products from the microwave pyrolysis were analyzed using gas chromatography–mass spectrometry. The experimental results showed that a higher microwave power led to higher heating rates and higher volatile matter yields. The yield of gaseous and oil products increased with increasing the microwave receptor/coal ratio and microwave power. The oil products were complex mixtures of organic compounds with a variety of chemical groups. The yields of aromatic compounds, including phenol and naphthalene, increased significantly with the pyrolysis time. The oil products contained 17.27% saturated aliphatic species, while the aromatic compounds accounted for 45.5%, and polar groups formed 25.84% of pyrolysis oil. As pyrolysis proceeded, Fe₃O₄ was reduced to elemental Fe at the later stages of microwave pyrolysis, as evidenced by X-ray diffraction and energy-dispersive X-ray analyses. Scanning electron microscopy analysis showed that the morphology of the microwave receptor (Fe₃O₄) changed as a result of reduction.
- Subject
- microwave pyrolysis; Indonesian lignite; microwave receptor; coal ratio; residence time; temperature; coal particle size
- Identifier
- http://hdl.handle.net/1959.13/1307652
- Identifier
- uon:21484
- Identifier
- ISSN:0887-0624
- Language
- eng
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