Citation: XUE Yong-bing, HE Min, GAO Cheng-yun, LI Bing-zheng, LIU Zhen-min. Removal of benzopyrene from coal tar asphalt by chemical method[J]. Journal of Fuel Chemistry and Technology, ;2019, 47(6): 668-674. shu

Removal of benzopyrene from coal tar asphalt by chemical method

1.
School of Chemical & Biological Engineering, Taiyuan University of Science & Technology, Taiyuan 030024, China
2.
Research Institute of Highway, Mnistry of Transportation, Beijing 100088, China
3.
School of Environment & Safety, Taiyuan University of Science & Technology, Taiyuan 030024, China

Corresponding author: XUE Yong-bing, tykjdxxyb@163.com HE Min, hemin307@163.com
Received Date: 5 September 2018
Revised Date: 23 March 2019

Fund Project: the Youth Science Foundation of Shanxi Province 201601D202016Science and Technology Innovation Project from Research Institute of Highway Ministry of Transport 2018-E0001the Natural Science Foundation of Shanxi Province, China 201601D102011the Soft Science Research Program of Shanxi Province 2018041043-1The project was supported by the Natural Science Foundation of Shanxi Province, China(201601D102011), the Soft Science Research Program of Shanxi Province (2018041043-1), Science and Technology Innovation Project from Research Institute of Highway Ministry of Transport (2018-E0001), the Youth Science Foundation of Shanxi Province(201601D202016) and the Docporal Research Fund of Taiyuan University of Science and Technology (20182022)the Docporal Research Fund of Taiyuan University of Science and Technology 20182022

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For the friendly environmental application of coal tar pitch, the benzoic acid, polyethylene glycol, solid coumarone resin (S) or liquid coumarone resin (L) were selected as a modifier to lower the content of harmful benzopyrene in coal tar pitch by chemical reaction in a tube furnace. The benzopyrene content was detected by an ultraviolet-visible spectrophotometer, and the influence of reaction temperature, reaction time, modifier contents and catalyst types on the benzopyrene content was investigated. The results show that the technical condition has an intimate relationship with the decrease of benzopyrene content owing to the electrophilic substitutive reaction at the existence of acidic catalyst. All modifiers tested have obvious effects on the decrease of benzopyrene content. Under the optimum conditions, the removal rates of benzopyrene by different additives decrease in proper sequence of liquid coumarone resin, polyethylene glycol, benzoic acid and solid coumarone resin. The highest benzopyrene removal rate of 73.0% is obtained by using liquid coumarone resin, showing a promising application prospect.
- coal tar pitch,
- chemical methods,
- harmless modification,
- benzopyrene,
- environment
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沈阳化工大学材料科学与工程学院沈阳 110142