Title: A high temperature furnace for in-situ SAXS measurement of coal carbonisation

Authors: Fei Xie; Dongfeng Li; Zhenzhong Li; Zhihong Li

Addresses: Institute of Physical Science and Information Technology, Anhui University, Hefei, 230601, China; Multi-discipline Research Center of the Institute of High Energy Physics, Chinese Academy of Science, Beijing, 100049, China ' College of Chemical Engineering and Biotechnology, Xingtai University, Xingtai, 054001, China ' Multi-discipline Research Center of the Institute of High Energy Physics, Chinese Academy of Science, Beijing, 100049, China ' Multi-discipline Research Center of the Institute of High Energy Physics, Chinese Academy of Science, Beijing, 100049, China

Abstract: High temperature carbonisation is one of the main ways of coal utilisation. Small angle X-ray scattering (SAXS) with synchrotron radiation can be used for in-situ measurement of the carbon network structure change during heating coal. Recently, we developed a high temperature (1,200°C) furnace for in-situ SAXS measurements on coal carbonisation. The device essentially consists of a heating body and a controller. Measurement of lignite (brown coal) carbonisation has been successfully performed with the device at the 1W2A SAXS station at the Beijing synchrotron radiation facility (BSRF). The results show that the carbon network of coal presents surface fractal structure at different carbonisation temperatures. With the increase in temperature, the fractal dimension presents a wavelike increase reflecting the structural changes during different stages of coal carbonisation. [Received: February 9, 2018; Accepted: April 20, 2018]

Keywords: coal; high temperature carbonisation; furnace; small angle X-ray scattering; fractal.

DOI: 10.1504/IJOGCT.2020.105775

International Journal of Oil, Gas and Coal Technology, 2020 Vol.23 No.3, pp.365 - 374

Received: 09 Feb 2018
Accepted: 20 Apr 2018
Published online: 13 Mar 2020 *

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