摘要：
以油酸和二乙烯三胺或三乙烯四胺为反应原料, 首先进行酰胺化合成酰胺, 再通过酰胺环化反应得到咪唑啉中间体, 最后用亚磷酸二甲酯将油溶性的中间体进行转化得到水溶性的咪唑啉季铵盐缓蚀剂。考察了咪唑啉中间体与季铵化试剂的物质的量比、季铵化温度和反应时间等对合成产品缓蚀性能的影响。用失重法测出合成的水溶性咪唑啉季铵盐缓蚀剂在模拟油田水腐蚀介质中对碳钢的缓蚀率>90%。
关键词:
水溶性咪唑啉,
亚磷酸二甲酯,
缓蚀剂,
油田水处理
Abstract:
Intermediate imidazoline has been synthesized with oleic acid and diethylenetriamine or triethylenetetramine as reaction materials. Firstly, amide be obtained through amidation. Then, intermediate imidazoline can be obtained through amide cyclization reaction. In the end, oil soluble intermediate can be converted into aqueous soluble imidazolinc quaternary ammonium salt corrosion inhibitor by reaction with dimethyl phosphite. The influences of mole ratio of intermediate imidazoline to quaternary ammoniated reagent, quaternary ammoniating temperature, reaction time, etc., on the corrosion inhibiting capacity of synthesized products are investigated. It is found out by weight-loss method that the corrosion inhibiting rate of the synthesized aqueous soluble imidazoine quaternary ammonium salt corrosion inhibitor in simulated oilfield water corrosion media is higher than 90%.
Key words:
water soluble imidazoline,
dimethyl phosphite,
corrosion inhibitor,
oilfield water treatment
中图分类号:
李志元, 王素芳, 林蓓, 王腾, 滕厚开. 水溶性咪唑啉缓蚀剂的合成及缓蚀性能评价[J]. 工业水处理, 2015, 35(2): 83-85.
Li Zhiyuan, Wang Sufang, Lin Bei, Wang Teng, Teng Houkai. Synthesis and evaluation of the aqueous soluble imidazoline quaternary ammonium salt corrosion inhibitor[J]. INDUSTRIAL WATER TREATMENT, 2015, 35(2): 83-85.