摘要
以自制的环氧琥珀酸盐为原料,采用阴离子聚合法合成聚环氧琥珀酸(PESA),并对产物进行红外光谱表征;考察了影响PESA相对分子质量和产率的六种因素,利用电导率法分析评价了系列PESA对油田污水中常见垢(碳酸钙垢、硫酸锶垢、硫酸钡垢)的阻垢效果。红外光谱测试结果表明PESA为目标产物。通过改变反应条件,得到了相对分子质量在350～1300范围、产物平均收率在65%左右的一系列聚环氧琥珀酸。PESA的阻垢性能与相对分子质量及使用浓度有关,最佳相对分子质量范围为1100～1300,且存在"溶限效应",实际应用中需要针对垢的类型和成垢离子的浓度,选用PESA的最适宜相对分子质量及其最佳用量。
Using the self-made epoxysuccinic acid as raw material, polyepoxysuccinic acid （PESA） was synthesized in virtue of anionic polymerization. In addition, the expected product was characterized by means of IR. and the six factors influencing relative molecular weight and yield of PESA were investigatd, as a result, the optimized reaction conditions was obtained. Under the optimized conditions, a series of scale inhibitors whose molecular weights were between 350 and 1300 were prepared in the yield of more than 65%. Then, conductivity analysis was used to analyze and evaluate the scale inhibition performance of the synthesized PESAs in oilfield wastewater containing calcium carbonate, strontium sulfate, and barium sulfate. It was indicated that the performance of PESA was relative to its relative molecular weight and concentration. When the relative weight of PESAs were between 1100 and 1300, the scale inhibition performance was better, and there existed a good ＂threshold effect ＂. The optimum dosage and the relative molecular weight of PESA should be selected according to the different type and concentration of scale in practical application.
出处
《油田化学》
CAS
CSCD
北大核心
2014年第1期111-116,共6页
Oilfield Chemistry
关键词
聚环氧琥珀酸
阻垢剂
阴离子聚合
相对分子质量
阻垢性能
Polyepoxysuccinic acid
scale inhibitor
anionic polymerization
relative molecular weight
scale inhibition
