Extraction and sequential elution of a heavy oil from direct coal liquefaction
| Autor: | Dao-Guang Teng, Li-Li Huang, Xian-Yong Wei, Hua-Shuai Gao, Min Zhang, Zhi-Min Zong, Zheng Yang |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
Bituminous coal
Chromatography Chemistry Elution 020209 energy General Chemical Engineering Organic Chemistry geology.rock_type Extraction (chemistry) geology Energy Engineering and Power Technology 02 engineering and technology Mass spectrometry Coal liquefaction chemistry.chemical_compound Fuel Technology 020401 chemical engineering Yield (chemistry) 0202 electrical engineering electronic engineering information engineering Pyrene Gas chromatography 0204 chemical engineering |
| Zdroj: | Fuel. 260:116319 |
| ISSN: | 0016-2361 |
| DOI: | 10.1016/j.fuel.2019.116319 |
| Popis: | Microwave-assisted extraction (MWAE) with CH3OH and sequential elution (SE) of a heavy oil (HO) from direct coal liquefaction of Heishan bituminous coal combined with subsequent analyses were conducted to understand the molecular composition of the HO and to explore the possibility of separating pure condensed arenes (CAs) from the HO. The yield of extractable portion (EP) from the HO by the MWAE is 94.2% and the main gas chromatograph/mass spectrometer (GC/MS)-detectable compounds in EP are CAs, especially tricyclic and tetracyclic arenes, along with small amount of normal alkanes. By the SE, much more other types of compounds, e.g., oxygen-, nitrogen-, or sulfur-containning organic compounds, were detected with GC/MS, and pyrene and 1-methylpyrene were separated in the purities of 95.2% and 93.4%, respectively. |
| Databáze: | OpenAIRE |
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