The effect of hydrothermal pretreatment on the structure and fast pyrolysis behaviors of ShengLi lignite

Boyang Bai; Luyao Qiang; Suisui Zhang; Zhiwei Peng; Hang Mu; Xiaoxun Ma

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The effect of hydrothermal pretreatment on the structure and fast pyrolysis behaviors of ShengLi lignite

Energy Science and Technology | Updated：2026-01-06

- The effect of hydrothermal pretreatment on the structure and fast pyrolysis behaviors of ShengLi lignite
- The effect of hydrothermal pretreatment on the structure and fast pyrolysis behaviors of ShengLi lignite
- 中国化学工程学报（英文版） 2021年35卷第7期页码：265-274
- Affiliations：
  
  1. School of Chemical Engineering, Northwest University,Xi'an,China,710069
  2. International Scientific and Technological Cooperation Base of the Ministry of Science and Technology (MOST) for Clean Utilization of Hydrocarbon Resources,Xi'an,China,710069
  3. Chemical Engineering Research Center of the Ministry of Education (MOE) for Advanced Use Technology of Shanbei Energy,Xi'an,China,710069
  4. Shaanxi Research Center of Engineering Technology for Clean Coal Conversion,Xi'an,China,710069
  5. Collaborative Innovation Center for Development of Energy and Chemical Industry in Northern Shaanxi,Xi'an,China,710069
- Author bio：
- Funds：
- DOI：
  中图分类号：
- 纸质出版：2021
- Accepted：
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Boyang Bai, Luyao Qiang, Suisui Zhang, 等. The effect of hydrothermal pretreatment on the structure and fast pyrolysis behaviors of ShengLi lignite[J]. 中国化学工程学报（英文版）, 2021,35(7):265-274.

Boyang Bai, Luyao Qiang, Suisui Zhang, Zhiwei Peng, Hang Mu, Xiaoxun Ma. The effect of hydrothermal pretreatment on the structure and fast pyrolysis behaviors of ShengLi lignite[J]. Chinese Journal of Chemical Engineering, 2021, 35(7): 265-274.
Boyang Bai, Luyao Qiang, Suisui Zhang, 等. The effect of hydrothermal pretreatment on the structure and fast pyrolysis behaviors of ShengLi lignite[J]. 中国化学工程学报（英文版）, 2021,35(7):265-274. DOI：

Boyang Bai, Luyao Qiang, Suisui Zhang, Zhiwei Peng, Hang Mu, Xiaoxun Ma. The effect of hydrothermal pretreatment on the structure and fast pyrolysis behaviors of ShengLi lignite[J]. Chinese Journal of Chemical Engineering, 2021, 35(7): 265-274. DOI：

摘要

Abstract

The structure and composition of coal determine its fast pyrolysis characteristics

and the study of the relationship between them can play an important role in the efficient and clean utilization of coal. So

in this work

hydrothermal pretreatment was used to artificially change the structure and composition of ShengLi (SL) lignite

which was used to investigate the influence of structural changes on pyrolysis. The physicochemicalstructure and composition of samples were characterized by X-ray diffraction

specific surface area and porosity analyzer

solid-state

C nuclear magnetic resonance

Fourier transform infrared spectroscopy

and elementalanalyzer. Pyrolysis experiments were carried out in a powder-particle fluidized bed reactor

and the distribution and composition of the pyrolysis products were analyzed. The gasification activity of char was investigated by thermogravimetric analysis with a CO

atmosphere. The results show that hydrothermal pretreatment (HTP) can destroy the cross-linking structure of SL lignite

and affect its aromaticity

pore structure

functional group

and carbon structure to change the distribution and composition of pyrolysis products of

SL lignite

especially the composition of tar. Finally

the structure-activity relationship between the structure

composition

and pyrolysis characteristics of coal was comprehensively studied.

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