混酸法制备水溶性沥青的实验条件研究  

Preparation of water-soluble asphalt by mixed acid method

作　　者：郑晓君[1] 高丽娟[1] 刘焕[1] 赵雪飞[1] ZHENG Xiaojun;GAO Lijuan;LIU Huan;ZHAO Xuefei(School of Chemical Engineering,University of Science and Technology Liaoning,Anshan 114051,China)

机构地区：[1]辽宁科技大学化学工程学院,辽宁鞍山114051

出　　处：《辽宁科技大学学报》2016年第5期376-380,共5页Journal of University of Science and Technology Liaoning

基　　金：国家自然基金(U1361126);教育部博士点基金(20132120110001);辽宁省教育厅创新团队资助项目(LT20100053);辽宁省煤化工工程技术中心开放基金(2013-05)

摘　　要：以中温煤焦油沥青为原料,采用浓硫酸和浓硝酸混酸氧化,碱溶酸沉法提纯制备易溶于碱性水溶液的水溶性沥青。以水溶性沥青收率及红外光谱峰强度为指标考察了氧化温度、反应时间、混酸比、液料比等因素影响。实验结果表明:中温煤焦油沥青在氧化温度40℃,反应时间5 h,混酸比(浓硫酸和浓硝酸的体积比)7:3,料液比1 g:20 m L,得到116%产率的水溶性沥青。The Water-soluble asphalt dissolved in alkaline aqueous was prepared by alkali solution-acid precipitationmethod,under oxidation processes via mixed acid ( Vsulfuric acid/Vnitric acid ),from medium temperature coaltar pitch. The effect of the oxidation temperature,reaction time,proportion of mixed acid and ratio of liquidto start material on the yields and IR’s intensity of the water-soluble asphalt were investigated in this paper.The results indicated that the highest yield of 116% was obatained on the condition of oxidation temperature40 ℃,reaction time 5 h,proportion of mixed acid ( Vsulfuric acid/Vnitric acid ) was 7:3 and the ratio of liquid to startmaterial was 1 g: 20 mL.

关 键 词：水溶性沥青 混酸氧化法 碱溶酸沉提纯 

分 类 号：TQ522.65[化学工程—煤化学工程]