西南石油大学学报(自然科学版) ›› 2009, Vol. 31 ›› Issue (6): 143-147.DOI: 10.3863/j.issn.1674-5086.2009.06.032

• 油气化学工程与化工 • 上一篇    下一篇

EVA接枝共聚物的合成及其降凝性能评价

郭淑凤1 关中原2 胡星琪3 伍丽娟2   

  1. 1.中国石化胜利油田地质科学研究院,山东 东营 257015; 2.中国石油管道科技研究中心,河北 廊坊 065000; 3.西南石油大学化学化工学院,四川 成都 610500
  • 收稿日期:1900-01-01 修回日期:1900-01-01 出版日期:2009-12-20 发布日期:2009-12-20

STUDY ON THE SYNTHESIS AND POUR-POINT DEPRESSING PROPERTIES OF EVA GRAFT COPOLYMER

GUO Shu-feng1 GUAN Zhong-yuan2 HU Xing-qi3 WU Li-juan2   

  1. 1.Geoscience Research Institute of Shengli Oilfield Company Limited,SINOPEC,Dongying Shandong 257015,China;2.Scientific and Technical Center of China Petroleum Pipeline Corporation,CNPC,Langfang Hebei 065000,China;3.School of Chemistry and Chemical Engineering,Southwest Petroleum University,Chengdu Sichuan 610500,China)JOURNAL OF SOUTHWEST PETROLEUM UNIVERSITY(SCIENCE & TECHNOLOGY EDITION),VOL.31,NO.6,143-147,2009(ISSN 1674-5086,in Chinese
  • Received:1900-01-01 Revised:1900-01-01 Online:2009-12-20 Published:2009-12-20

摘要:

结合大庆原油的物性特征,在降凝机理的指导下,以EVA与烷基马来酰亚胺接枝反应,合成了一类新型原油降凝剂。以目标物的降凝幅度为评价指标,优选出合适的合成条件:当EVA与十八烷基马来酰亚胺的物质的量的比为1∶20,引发剂过氧化二苯甲酰的量为2.5%,聚合时间为6h,聚合温度为90℃时,聚合物的降凝效果最好,即目标物加量为100mg/kg时凝点降低15℃。利用红外光谱仪对脂肪族胺、马来酸酐和十八烷基马来酰亚胺进行分析的结果表明:脂肪族胺与马来酸酐反应生成了十八烷基马来酰亚胺。利用核磁共振波谱仪对EVA及其接枝产物进行分析的结果表明:接枝反应确实存在,接枝率可以达到6.7%。

关键词: 大庆原油, 降凝剂, EVA, 接枝改性, 合成

Abstract: On the basis of analyzing characteristics of Daqing crude oil and according to mechanism of PPD,the graft copolymer of EVA and octadecyl maleimide is synthesized.The graft copolymer has an optimal effect of pour point depressing for the Daqing crude oil when it is synthesized under the conditions that the mole ratio of EVA and octadecyl maleimide is 1∶20,mass fraction peroxidation benzoin formyl is 2.5%,polymerization time is 6h,and the polymerization temperature is 90℃.When 100mg/kg of the graft copolymer was added into Daqing crude oil,the pour point was reduced by 15℃.The infrared spectrograms of octadecylamine,maleic anhydride,octadecyl maleimide indicate that the reaction product of dodecylamine and maleic anhydride is dodecylmaleimide.The NMR spectral diagrams of EVA and its graft copolymers show that the reaction of EVA and dodecylmaleimide has taken place indeed,and the grafted percentage reaches to 6.7%.

Key words: Daqing crude oil, pour point depressant(PPD), EVA, graft modification, synthesis

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