支链聚醚原油破乳剂的合成与表征  

Synthesis and Characterization of Branched Polyether Demulsifiers for Crude Oil

作　　者：刘龙伟[1] 郭睿[1] 解传梅 王敏[1] 王二蒙[1] 

机构地区：[1]陕西科技大学教育部轻化工助剂化学与技术重点实验室,陕西西安710021

出　　处：《精细化工》2014年第7期898-902,共5页Fine Chemicals

摘　　要：以聚氧乙烯聚氧丙烯环氧基醚和聚氧乙烯聚氧丙烯甲基醚为支链,聚硅氧烷为主链,在异丙醇溶剂下,以氯铂酸为催化剂,通过硅氢加成反应,合成出聚醚聚硅氧烷类原油破乳剂。得到较佳的合成条件为:n(环氧醚)∶n(甲基醚)=1∶1,n(硅氢键)∶n(双键)=1∶1.15,反应温度105℃,反应时间5 h,催化剂用量30μg/g(相对于反应物总质量)和溶剂用量40%(以原料总质量计),在该条件下转化率达到92.62%,并通过FTIR和1HNMR对产物的分子结构进行了表征,谱图分析证明合成了预期产物。表面张力仪测定了其临界胶束质量浓度为0.7 g/L,最低表面张力24.2 mN/m。该破乳剂在破乳温度70℃,用量为100 mg/L条件下,对延长石油永平原油的脱水率达到88.42%,具有较好的破乳性能。With polyoxyethylene polyoxypropylene epoxy ether and polyoxyethylene polyoxypropylene ether as the branched chains,polysiloxane as the based chain,under the isopropyl alcohol solvent,using chloroplatinic acid as the catalyst,through silicon hydrogen addition reaction, synthesized the polyether polysiloxane crude oil demulsifier.Fixed n （epoxy ether） ： n （methyl ether） = 1：1, the research shows that n （Si—H） ： n （C=C） = 1：1.15, temperature 105 ℃, the reaction time of 5 h, 30 μg/g catalyst and solvent dosage 40% overall （raw material）, the conversion rate reached 92.62%, and by FTIR and ^1H NMR had been used to characterize the structure of the product, spectra analysis shows that expected product was synthesized. Its critical Angle beam is determined by the surface tensiometer 0.7 g/L, minimum surface tension of 24.2 mN/m. The Demulsifier in demulsification temperature 70 ℃, the amount of 100mg/L, to Yanchang Yongping crude oil dehydration rate reached 88.42%, has good demulsification performance.

关 键 词：环氧醚 甲基醚 聚硅氧烷 硅氢加成 破乳剂 油田化学品与油品添加剂 

分 类 号：TE624.1[石油与天然气工程—油气加工工程]