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The Co-extraction of Low-Rank Coal and Biomass by Polar Solvent at Mild Conditions

  • Jun Zhao
  • Haibin ZuoEmail author
Conference paper
Part of the The Minerals, Metals & Materials Series book series (MMMS)

Abstract

In order to effectively and widely use low-rank coal and biomass, the co-extracted product was extracted from KL coal and biomass by polar solvent N-2-methyl-2-pyrrolidinone (NMP) at high temperature and high pressure. The structures of the co-extracted product and residues were characterized by element analysis, FT-IR spectra. The effects of temperatures, solid-liquid ratio, and extraction time on the extraction yields of co-extracted product were studied, respectively. Moreover, the extraction mechanism of the co-extracted product at mild conditions is proposed. The results show that the ash contents of the co-extracted products from KL coal and biomass are significantly lower than KL coal, and the volatile contents and H/C are significantly improved. For KL coal, with the increase of biomass/coal ratio, the extraction yield of KL is improved evidently from 56.25 to 71.44% and the ash content is decreased from 0.68 to 0.59% at suitable conditions.

Keywords

Low-rank coal Extraction yield Biomass Thermal extraction 

Notes

Acknowledgements

This work was financially supported by the National Natural Science Foundation of China (NO. 51574023) and National Key Research and Development Program (2016YFB0600701).

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Copyright information

© The Minerals, Metals & Materials Society 2020

Authors and Affiliations

  1. 1.State Key Laboratory of Advanced MetallurgyUniversity of Science and Technology BeijingBeijingPeople’s Republic of China

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