微波电场对高凝原油体系中分子性质的影响  

Effect of microwave electric field on molecular properties of high pour point crude oil system

作　　者：张奇[1] 李雪蒙 商辉[1] 张文慧[1] ZHANG Qi;LI Xue-meng;SHANG Hui;ZHANG Wen-hui(State Key Laboratory of Heavy Oil Processing,China University of Petroleum-Beijing,Beijing 102249,China)

机构地区：[1]中国石油大学(北京)重质油国家重点实验室,北京102249

出　　处：《现代化工》2021年第2期229-234,240,共7页Modern Chemical Industry

摘　　要：为进一步提高微波作用效果,采用分子动力学模拟方法,重点研究了微波场对高凝模拟油体系的影响。分析了高凝油的性质与其分子之间的内在联系以及微波电场对高凝油性质的影响规律。结果表明,微波电场强度和频率对原油性质有很大影响,在适当电场强度下,电场的加入阻碍了分子运动,抑制了石蜡分子的聚集,使得体系黏度降低。每种物质对微波的响应频率不同,外加电场频率与石蜡分子的响应频率越接近,分子与电场之间的相互作用越强,分子扩散作用减弱,体系黏度降低。In order to further improve the effects of microwave,molecular dynamics simulation method is utilized to study the effect of microwave field on simulated high pour point crude oil system.The intrinsic relationship between the properties of high pour point crude oil and its component molecules is analyzed,and the effect rules of microwave electric field on the properties of high pour point crude oil are studied.Results show that microwave’s frequency and electric field intensity have great impact on the properties of the model oil. Under a proper electric field intensity,the application of microwave electric field will hinder the movement of oil molecules,and inhibit the aggregation of paraffin molecules,leading to a reduction in viscosity.Different substance responses to different microwave frequency,and each substance has the maximum responsibility to a certain microwave frequency. If the frequency of the applied electric field closes to the response frequency of paraffin molecules,the interaction between the molecules and the electric field will be enhanced,leading to a lower molecules diffusion and thus a lower viscosity for the system.

关 键 词：高凝油 微波电场 分子动力学 黏度 响应频率 

分 类 号：TQ015.9[化学工程]