水包稠油乳状液破乳剂的合成及性能研究

Synthesis and Properties of Heavy Oil-in-Water Emulsion Demulsifier

摘要:

采用氧化还原引发剂过硫酸铵/亚硫酸氢钠，以苯乙烯、甲基丙烯酸丁酯、丙烯酰胺和甲基丙烯酰氧乙基三甲基氯化铵为合成单体，通过乳液聚合法合成了水包稠油破乳剂苯乙烯/甲基丙烯酸丁酯/丙烯酰胺/甲基丙烯酰氧乙基三甲基氯化铵，并用红外光谱和核磁共振氢谱对四元共聚物破乳剂的结构进行了表征。合成四元共聚物稠油破乳剂的最佳条件为：反应温度为65℃，乳化剂用量（占体系总质量）为1.6%，引发剂用量（占单体总质量）为1.1%，单体质量分数为30%。利用胜利油田陈庄稠油模拟的稠油乳状液对自制四元共聚物稠油破乳剂进行了破乳性能评价。在破乳温度为60℃，加药量为200mg/L，破乳时间为120 min时，破乳效果最佳，即脱水率达到89.3%，水中含油量为198.6 mg•L-1，界面状态整齐，脱出水水色清。自制水包稠油破乳剂的破乳性能优于市售破乳剂AE-8051，YT-100，SP-169，BQ-05。

Abstract:

Redox initiator of ammonium persulfate/sodium bisulfite, styrene,butyl methacrylate, acrylamide and methacryloyloxyethyl trimethyl ammonium chloride as the synthesis of the monomers , which synthesizing tetrapolymers heavy demulsifier styrene / butyl methacrylate / acrylamide / methacryloyloxyethyl trimethyl ammonium chloride by emulsion copolymerization . The structure of tetrapolymers heavy demulsifier was characterized by Infrared Spectroscopy and Nuclear Magnetic Resonance Spectroscopy. The optimum conditions of synthetic quaternary copolymer heavy demulsifier were as follows: reaction temperature 65 ℃, emulsifier dosage 1.6% (the total mass quality system) , initiator dosage 1.1% (the total mass of the monomers) , monomer concentration 30% . Using Shengli Oilfield chenzhuang heavy oil simulated heavy oil emulsion to evaluate the performance of homemade tetrapolymers heavy demulsifier.Effects of demulsification conditions on demulsification performance. Under the condition of demulsification temperature 60 ℃, demulsification dosage 200 mg/L , demulsification time 120 min, the dehydration was reached up 89.3% , the oil content of water 198.6 mg/L, the oil-water interface was neat and clear water prolapse. The performances tests of the O/W demulsifier were superior to those of industrial demulsifiers AE-8051, YT-100, SP-169, BQ-05.