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- W2794053399 abstract "In order to effectively use of low rank coal, the thermally dissolve coal (TDC) was extracted from four kinds of low-rank coals by N-2-methyl-2-purrolidinone(NMP) at high temperature and high pressure. The structures of thermally dissolve coal and residues were characterized by element analysis, FT-IR spectra. The effects of temperatures, coal rank, solid-liquid ratio and extraction time on the extraction yields of TDC were studied, respectively. Moreover, the extraction mechanism of TDC at mild conditions is proposed. The results show that the ash contents of TDCs from four raw coals are significantly lower than that of raw coals, and the volatile contents and H/C are significantly improved. For KL coal, with the increase of temperature, the extraction yield of KL-TDC is improved evidently from 33.75% to 56.25% and the ash content is decreased from 0.57% to 0.49% at 350 °C." @default.
- W2794053399 created "2018-03-29" @default.
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- W2794053399 date "2018-01-01" @default.
- W2794053399 modified "2023-09-27" @default.
- W2794053399 title "Extraction and Thermal Dissolution of Low-Rank Coal by N-Methyl-2-Pyrrolidinone" @default.
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- W2794053399 doi "https://doi.org/10.1007/978-3-319-72362-4_55" @default.
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