NPZ纳米降凝剂对石蜡晶粒电性能的影响

Influence of NPZ on the electrical property of wax crystals

摘要: 为了研究有机与无机纳米杂化材料降凝剂（简称NPZ）对高含蜡原油的作用机理，采用Zeta电位技术对添加了NPZ的大庆原油中石蜡晶粒的表面电荷及其与晶粒聚集、运动的关系进行研究，结果表明：大庆原油添加NPZ降凝剂后，石蜡晶粒的Zeta电位明显高于添加EVA降凝剂和未加剂大庆原油的Zeta电位，石蜡晶粒尺寸减小，蜡晶不易聚集，不能形成三维网络结构，因而使大庆原油具有良好的低温流动性，同时证明了NPZ对含蜡原油的作用机理中吸附作用占主导地位。

Abstract: In order to identify the action mechanism of NPZ organic and inorganic Nano-hybrid-material based pour point depressant (PPD) on high waxy crude oil, the surface charge and law of motion and aggregation of wax crystal particles in Daqing Crude Oil with NPZ are discussed by Zeta potential technology in this paper. The results show that the Zeta potential of wax crystals in Daqing Crude Oil with NPZ is obviously higher than that with EVA and without any PPD. By adding NPZ to Daqing Crude Oil, the wax crystals become smaller and cannot accumulate easily to form three-dimensional grid, which makes Daqing Crude Oil have good low-temperature flow properties. It also proves that in the action mechanism of NPZ on waxy crude oil, adsorption plays the leading role.