Preparation of modified pitch with high content of β resin from thermal polymerization-air oxidation

doi:10.16085/j.issn.1000-6613.2016.02.033

Chemical Industry and Engineering Progree ›› 2016, Vol. 35 ›› Issue (02): 555-558.DOI: 10.16085/j.issn.1000-6613.2016.02.033

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Preparation of modified pitch with high content of β resin from thermal polymerization-air oxidation

ZHU Yaming¹, ZHAO Xuefei¹, LÜ Jun^1,2, GAO Lijuan¹, LAI Shiquan¹, GUO Haidong¹

1 Engineering Research Center of Advanced Coal Coking and Efficient Use of Coal Resources, University of Science and Technology Liaoning, Anshan 114051, Liaoning, China;
2 College of Chemistry and Chemical Engineering, Qiqihar University, Qiqihar 161006, Heilongjiang, China

Received:2015-07-03 Revised:2015-08-02 Online:2016-02-05 Published:2016-02-05

热聚合-氧化法制备高β树脂改性沥青

朱亚明¹, 赵雪飞¹, 吕君^1,2, 高丽娟¹, 赖仕全¹, 郭海东¹

1 辽宁科技大学先进煤焦化及煤资源高效利用工程研究中心, 辽宁鞍山 114051;
2 齐齐哈尔大学化学与化学工程学院, 黑龙江齐齐哈尔 161006

通讯作者: 赵雪飞,教授,博士生导师,主要从事煤焦油深加工及煤基新型碳材料的研究。E-mail:zhao_xuefei@sohu.com。
作者简介:朱亚明(1989-),男,博士研究生。E-mail:zhuyaming0504@163.com。
基金资助:
国家自然科学基金(U1361126)、教育部博士点基金(20132120110001)、辽宁省教育厅创新团队资助项目(LT2010053)及辽宁省煤化工工程技术中心开放基金(2013-05)项目。

Abstract

Abstract: Refined pitch with low content of quinoline insoluble (QI<0.1%) was obtained by solvent extraction from medium pitch as the raw material. The modified pitch with high content of β resin was obtained by thermal polymerization and air oxidation under certain conditions. The factors affecting the modification such as the reaction temperature,oxidation time and the air flow during the process of air-oxidation were discussed in this paper. The experimental results show that,with the oxidation temperature of 280℃,oxidation time of 2h,and the air flow rate of 0.04m3/h,we can obtain high quality modified coal tar pitch with softening point of 220℃,toluene-insoluble of 61.59%,quinolone-insoluble of 4.35%,coking value of 78.44%,and β resin content of 57.24%.

Key words: refined pitch, air oxidation, modified pitch, β resin

摘要： 以中温沥青为原料,通过溶剂萃取沉降分离获得低喹啉不溶物含量(QI<0.1%)的精制沥青。对精制沥青进行热聚合-空气氧化改性处理,得到高β树脂含量的改性沥青。经特定热聚合条件处理后,研究了空气氧化阶段的反应温度、氧化时间和空气流量对沥青改性的影响。实验结果表明,在空气氧化阶段,当氧化温度为280℃,氧化时间为2h,空气流量为0.04m³/h时,可以获得软化点为220℃、甲苯不溶物为61.59% 、喹啉不溶物为4.35%、结焦值为78.44%,β树脂含量为57.24%的优质改性沥青。

关键词: 精制沥青, 氧化改质, 改性沥青, β树脂

CLC Number:

TQ522.65

ZHU Yaming, ZHAO Xuefei, LÜ Jun, GAO Lijuan, LAI Shiquan, GUO Haidong. Preparation of modified pitch with high content of β resin from thermal polymerization-air oxidation[J]. Chemical Industry and Engineering Progree, 2016, 35(02): 555-558.

朱亚明, 赵雪飞, 吕君, 高丽娟, 赖仕全, 郭海东. 热聚合-氧化法制备高β树脂改性沥青[J]. 化工进展, 2016, 35(02): 555-558.

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Preparation of modified pitch with high content of β resin from thermal polymerization-air oxidation

热聚合-氧化法制备高β树脂改性沥青

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