试验研究
装世红等：丙烯酸系共聚高分子破乳剂的合成与评价
丙烯酸系共聚高分子破乳剂的合成与评价
晨世红1
夏润
徐方园1
刘云义
赵月1
摘要：采用乳液聚合方法，分别以丙烯酸丁酯、丙烯酸、甲基丙烯酸甲酯、苯乙烯为单体，以有机硅（乙烯基三乙氧基硅烷）为改性剂，
合成了两种结构不同的水溶性原
油破乳剂（苯丙破乳剂和纯丙破乳剂），运用瓶试法将两种破乳剂进行筛选与复配。研究了复配质量比、破乳剂用量、脱水温度、沉降时间对原油脱水率的影响，运用红外光谱对破乳剂组成结构进行了初步分析。通过单因素实验得出辽河稠油脱水最适合的条件为破乳剂浓度150mg/L、脱水温度60℃、沉降时间60min、复配比0.6：1，在此条件下原油脱水率可以达到98.9%，污水含油浓度仅为50mg/L，达到了稠油脱水的技术指标。
关键词：稠油；复配破乳剂；乳液聚合；有机硅；脱水 Doi :10.3969/j.issn.10066896.2016.6.007
Synthesis and Evaluation of Acrylic Copolymer Demulsifiers Pei Shihong, Xia Run,Xu Fangyuan,Liu Yunyi,Zhao Yue
Abstract: Respectively with butyl acrylate, acrylic acid, methyl methacrylate and styrene as monomer, with organic silicon (vinyl triethoxy silane) as the modifier, two different structures of water soluble crude oil demulsifiers (poly co styrene acrylic demulsifier and polyacrylic demulsifier) were synthesized by emulsion polymerization method, two kinds of demulsifier were selection and compound by the bottle test. The effect of compound ratio, the dosage of demulsifier, temperature, time on crude oil dehydration rate was studied. The demulsifier structure wes anelysised preliminarily by the infrared spectra. The optimum technological conditions for Liaohe oilfield crude oil dehydration was found by single factor experiment, which is the dosage of demuisifier of 150 mg/L, dehydration temperature of 60 C , the settling time of 60 min, the complex ratio of O.6 : 1. Under the optimum con dition the crude oil dehydration rate can reach 98.9%, the effluent oil content was only about 5O mg/L, which reached the technical indexes of water in mineral oil.
Key words: heavy oil; compound demulsifier; emulsion polymerization; organic silicon; dehydration
目前，国内外研究的破乳剂从化学类型上看，以非离子型的聚氧乙烯、聚氧丙烯嵌段聚合物为主，随着原油采出液的成分越来越复杂，含水率越来越高，迫切需要研究出适应复杂稠油破乳的破乳剂。采用乳液聚合法，以丙烯酸类单体为原料，制备了结构不同的三元共聚破乳剂，向单体聚合物中引人乙烯基三乙氧基硅烷，增强了破乳剂的适应性。其分子为线性长链结构，含有大密度的活性官
能团，能吸附于乳状液油水界面降低油膜强度破乳剂合成工艺对环境污染小、成本低，所得产物破乳效果良好。另外，在原油破乳剂的研发方面魏国晟等人"提出五条十字技术路线，即“改头、换尾、加骨、交联、复配”。辽河油田处于三次采油阶段-4)，形成了油包水型（W/O）乳状液，采用的破乳剂复配技术可以满足适合辽河稠油脱水的工艺条件，达到了快速破乳脱水的效果
基金论文：这宁省高校创新团队支持计划基金项目（LT2013010)。沈阳化工大学
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油气田地面工程http/wwwayqtdmgc.cam