Studies on the Extraction of Phenols from Coal Tar Produced in Multi-Generation System

Zhen Jing Shi; Meng Xiang Fang; Chun Guang Zhou; Shu Rong Wang; Zhong Yang Luo

doi:10.4028/www.scientific.net/AMR.347-353.673

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 347-353Studies on the Extraction of Phenols from Coal Tar...

Studies on the Extraction of Phenols from Coal Tar Produced in Multi-Generation System

Abstract:

Isolation of phenols from the middle oil fraction(170-230°C) of tar produced in the multi-cogeneration system has been investigated for the purpose of recovering valuable pure phenols, such as phenol, cresols, xylenol and ethyl-phenol. Phenolic compounds were separated from the middle oil by liquid-liquid extraction using alkali and sulfuric acid. The yield of phenolic fraction from the middle oil (170-230°C) is up to 37%, which is much higher compared with those of metallurgical coke plants. Chromatography-mass spectrometry was used to analyse phenolic compounds. The result shows that the phenol content is less than 2%, and main compounds are cresol(14%), xylenol(20%) . Phenols of the middle oil fraction(230-280°C) was also analysed, which main contain methyl naphthol(20%).

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Periodical:

Advanced Materials Research (Volumes 347-353)

Pages:

673-677

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.347-353.673

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Online since:

October 2011

Authors:

Zhen Jing Shi, Meng Xiang Fang, Chun Guang Zhou, Shu Rong Wang, Zhong Yang Luo

Keywords:

Analysis, Coal Tar, Gas Chromatography-Mass Spectrometry (GC-MS), Phenol Recovery

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