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Received August 15, 2019
Accepted January 5, 2020
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This is an Open-Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/bync/3.0) which permits
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Separation of arenols from a low-temperature coal tar by liquid-liquid extraction
Hua-Shuai Gao1
Zhi-Min Zong1†
Zheng Yang1
Dao-Guang Teng1
Xiu-Hua Sun1
Li Yan1
Xian-Yong Wei1 2
Qing-Jie Guo2
Tian-Sheng Zhao2
Hong-Cun Bai1
1Key Laboratory of Coal Processing and Efficient Utilization, Ministry of Education, China University of Mining & Technology, Xuzhou 221116, Jiangsu, China 2State Key Laboratory of High-efficiency Utilization and Green Chemical Engineering, Ningxia University, Yinchuan 750021, Ningxia, China
zong_zhimin@163.com
Korean Journal of Chemical Engineering, May 2020, 37(5), 835-838(4), 10.1007/s11814-020-0480-y
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Abstract
Low-temperature coal tar (LTCT) is a sticky liquid mixture produced mainly from coal pyrolysis, which contains various value-added chemicals (VACs). Liquid-liquid extraction is considered as one of the green and effective ways to explore the organic composition and separate the VACs from LTCT. Herein, petroleum ether, methanol, and carbon disulfide were used to extract arenols from a LTCT. As a result, the relative content and absolute content of arenols extracted from the LTCT are ca. 96.3% and 85.9%, respectively. Among them, p-cresol is predominant, accounting for 22.2%. The isolated contents of arenols are up to 84.6%. Moreover, a kilogram-scale operation was carried out under the same conditions, which offers a potential application in industrial production.
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