摘要
研发低剂量水合物抑制剂部分代替传统热力学水合物抑制剂是目前水合物研究的热点之一。为提高聚N-乙烯基吡咯烷酮的性能,采用N-乙烯基吡咯烷酮与马来酸酐合成了聚合物MVP。利用四氢呋喃法研究了MVP的合成条件及对水合物的抑制效果。研究表明,以乙二醇丁醚为溶剂,双氧水为引发剂时,马来酸酐与N-乙烯基吡咯烷酮质量比为3∶4、反应温度(80～100)℃、反应时间9 h条件下合成MVP对水合物抑制效果良好。该条件下合成的MVP与聚N-乙烯基吡咯烷酮相比对水合物具有更好的抑制效果,相同加量下能够承受过冷度较聚N-乙烯基吡咯烷酮高3℃;最佳加量为0.7%,该加量下水合物生成温度从-2℃下降到-8.6℃。由于MVP性能受过冷度影响较大,研究发现MVP发挥作用的过冷度不能高于10℃。
Partial substitution of traditional dynamic hydrate inhibitor with low dosage ones is a focus of present hydrate study. To improve the performance of n-vinylpyrrolidone, it has been copolymerized with maleic anhydride and polymer MVP has been obtained. The polymerization conditions of MVP and the inhibiting effectiveness of it on hydrate are discussed also through THF Method. Results show that, MVP could be obtained under the foUowing conditions ： ethylene glycol monobutyl ether as solvent, mass ration of maleic anhydride to n-vinylpyrrolidone 3 ： 4, initiator azobisisobutyronitrile dosage 0. 2% - 0. 4%, reaction temperature（80 - 100） ~C and reaction time 9 h. Moreover, this product has shown good performance of hydrate inhibition, its optimum dosage is 0. 7% at which the forming temperature of hydrate could decrease to -8.6 ℃ from -2 ℃. The undercooling could have a lot influence on the behavior of MVP. Experimental results have shown that the undercooling should not be higher than 10 ℃.
出处
《科学技术与工程》
北大核心
2013年第14期3986-3989,共4页
Science Technology and Engineering
基金
四川省教育厅重点项目(11ZA018)资助
