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首页> 外文会议>Energy Technologies Symposium >Extraction and Thermal Dissolution of Low-Rank Coal by N-Methyl-2-Pyrrolidinone
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Extraction and Thermal Dissolution of Low-Rank Coal by N-Methyl-2-Pyrrolidinone

机译：N-甲基-2-吡咯烷酮低级煤的提取和热溶解

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摘要

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.
机译：为了有效地使用低级煤，在高温和高压下通过N-2-甲基-2-嘌呤烷酮（NMP）从四种低级煤中提取热溶解煤（TDC）。通过元素分析，FT-IR光谱表征热溶解煤和残留物的结构。研究了温度，煤等级，固液比和提取时间对TDC提取产量的影响。此外，提出了一种温和条件下TDC的提取机制。结果表明，来自四个原料煤的TDC的灰分含量显着低于原料煤，挥发性含量和H / C显着改善。对于KL煤，随着温度的增加，K1-TDC的提取产率显着提高至35.75％至56.25％，灰分含量从350℃下降0.57％至0.49％。

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