孤岛落地油泥制备改性沥青及其性能
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摘要
以油田油泥与基质沥青为实验原材料,采用高速剪切方法制备油田油泥改性沥青,通过针入度、软化点、延度、运动黏度和离析软化点差等表征方法,研究孤岛落地油泥对沥青高低温性能、加工性能和储存稳定性的影响。结果表明:活性中间体与苯乙烯-丁二烯-苯乙烯嵌段共聚物(SBS)添加量(质量分数)分别为15%与4%时,孤岛落地油泥改性沥青的针入度比基质沥青降低0.4 mm,软化点比基质沥青提高24℃,运动黏度为0.28 Pa·s,离析软化点差(165℃,48 h)为0.3℃,其各项指标均同时满足橡胶沥青评价指标要求和SBS沥青评价指标要求;加入适量的油泥可提高沥青的低温抗裂性能,改善加工性能,而对沥青储存稳定性无明显影响。
Oil field sludge treatment is a great challenge for the whole world. In this study, oil field sludge and matrix asphalt were used as experimental raw materials, and oilfield modified asphalt was prepared by highspeed shearing method. The effects of the island ground sludge on the high and low temperature properties,processing properties and storage stability of the asphalt were studied by using the characterization methods such as penetration, softening point, ductility, kinematic viscosity and separation softening point difference. The results showed that when the additive amounts of active intermediates and styrene-butadiene-styrene block copolymers(SBS) were 15% and 4%(mass fraction, the same below), respectively, the penetration degree and softening point of oil field sludge modified asphalt were 0.4 mm lower and 24 ℃ higher than matrix asphalt,respectively. The kinematic viscosity of the modified asphalt was 0.28 Pa·s, and the separation softening point difference(165 ℃, 48 h) was 0.3 ℃. All the indexes could meet the requirements of the evaluation criterion of rubber asphalt and SBS asphalt. Adding proper amount of oil sludge could improve its crack resistance at low temperature and the process properties of asphalt, but had no significant influence on its storage stability.
Oil field sludge treatment is a great challenge for the whole world. In this study, oil field sludge and matrix asphalt were used as experimental raw materials, and oilfield modified asphalt was prepared by highspeed shearing method. The effects of the island ground sludge on the high and low temperature properties,processing properties and storage stability of the asphalt were studied by using the characterization methods such as penetration, softening point, ductility, kinematic viscosity and separation softening point difference. The results showed that when the additive amounts of active intermediates and styrene-butadiene-styrene block copolymers(SBS) were 15% and 4%(mass fraction, the same below), respectively, the penetration degree and softening point of oil field sludge modified asphalt were 0.4 mm lower and 24 ℃ higher than matrix asphalt,respectively. The kinematic viscosity of the modified asphalt was 0.28 Pa·s, and the separation softening point difference(165 ℃, 48 h) was 0.3 ℃. All the indexes could meet the requirements of the evaluation criterion of rubber asphalt and SBS asphalt. Adding proper amount of oil sludge could improve its crack resistance at low temperature and the process properties of asphalt, but had no significant influence on its storage stability.
引文
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[2]ZHU Y P,YIN X D.Technology and progress of oil sludge treatment in petrochemical industry[J].Henan Chemical Industry,2017,12:7-11.
[3]陶梅,梁尚文.油泥制备除油吸附剂[J].环境工程学报,2016,10(11):6711-6719.
[4]匡少平,宋燕.不同油田油泥热裂解的特性分析及动力学研究[J].环境工程学报,2017,11(7):4298-4304.
[5]许增德.含油污泥微生物破乳脱油研究[J].科技致富导向,2011(5):313-314.
[6]王金利,李秀灵,严波.含油污泥处理技术研究进展[J].能源化工,2015,36(5):71-75.
[7]王晓磊,张久鹏,肖维.钠基蒙脱土改性沥青的制备及性能研究[J].公路,2012(10):130-133.
[8]CONG P L,ZHANG Y H,LIU N.Investigation of the properties of asphalt mixture incorporating reclaimed SBS modified asphalt pavement[J].Construction and Building Materials,2016,113:334-340.
[9]CHEN J S,CHEN S F,LIAO M C,et al.Laboratory evaluation of asphalt blends of recycling agents mixed with aged binders[J].Journal of Materials in Civil Engineering,2015,27(4):1-6.
[10]张艳,胡玉星.沥青针入度不确定度的评定[J].化工管理,2017(23):186.
[11]凌天清,李耀楠,董强,等.橡胶颗粒对为表处理性能的影响及降噪效果[J].交通运输工程学报,2011,11(5):1-5.
[12]李晓燕,平路,汪海年,等.基于国内外试验方法的橡胶沥青性能测试[J].交通运输工程学报,2015,15(1):10-17.
[13]王红凯,胡勇,陈守明.PPA/SBS复合改性沥青的性能研究[J].合成材料老化与应用,2018,47(1):16-22.
[14]DENG G X,CHENG J.Research on storage stability of SBS modified asphalt[J].Petroleum Asphalt,2016,30(1):47-50.
[15]交通部公路科学研究所.公路沥青路面施工技术规范:JTG F40-2004[S].北京:人民交通出版社,2004.