Application of EVA and its modified polymer in crude oil pour point depressant field

被引：0
|
作者：
Sun Z. [1 ]
Li H. [1 ]
Jing G. [1 ]
Zhang F. [1 ]
Yan B. [1 ]
Liu X. [1 ]
机构：
[1] College of Chemistry & Chemical Engineering, Northeast Petroleum University, Heilongjiang, Daqing
来源：
Huagong Jinzhan/Chemical Industry and Engineering Progress | 2023年 / 42卷 / 06期
关键词：
crystal; ethylene-vinyl acetate copolymer; gels; low temperature fluidity; viscosity; waxy crude oil;
D O I：
10.16085/j.issn.1000-6613.2022-1445
中图分类号：
学科分类号：
摘要：
Ethylene vinyl acetate copolymer (EVA) is one of the most widely used polymer pour point depressants commercially. It can disperse wax crystals by changing the crystallization process of wax crystals, effectively inhibit the formation of three-dimensional network structure of wax crystals, and improve the low-temperature fluidity of wax oil. Therefore, the research on the application of EVA pour point depressant in the field of crude oil pour point depressant has far-reaching significance. This paper summarized the research and application progress of EVA and its modified polymer in improving the low-temperature fluidity of waxy crude oil in recent years, introduced EVA pour point depressant and its effect after chemical, nano hybrid and synergistic modification, and expounded the pour point depressant mechanism and influencing factors. Compared with the traditional EVA pour point depressant, the pour point depressant after chemical modification, nano hybrid and cooperative modification can further change the morphology and structure of wax crystals and disperse wax crystals, thus significantly improving the pour point and viscosity reduction effect of crude oil. With the rise of long-distance pipeline transportation, repeated heating resistance and shear resistance were still important factors restricting the practical application of pour point depressants. Therefore, nano hybrid EVA was still the main research direction in the future. © 2023 Chemical Industry Press. All rights reserved.
引用
收藏
页码：2987 / 2998
页数：11
相关论文
共 62 条
  • [1] MARTINEZ -PALOU Rafael, MOSQUEIRA Maria de Lourdes, ZAPATA -RENDON Beatriz, Et al., Transportation of heavy and extra-heavy crude oil by pipeline: A review, Journal of Petroleum Science and Engineering, 75, 3, pp. 274-282, (2011)
  • [2] LI Qibin, DENG Xinxin, LIU Yang, Et al., Gelation of waxy crude oil system with ethylene-vinyl acetate on solid surface: A molecular dynamics study, Journal of Molecular Liquids, 331, (2021)
  • [3] MADANI Mohammad, KESHAVARZ MORAVEJI Mostafa, SHARIFI Mohammad, Modeling apparent viscosity of waxy crude oils doped with polymeric wax inhibitors, Journal of Petroleum Science and Engineering, 196, (2021)
  • [4] CHALA Girma T, SULAIMAN Shaharin A, -JAAFAR Azuraien JAPPER, Flow start-up and transportation of waxy crude oil in pipelines-A review, Journal of Non-Newtonian Fluid Mechanics, 251, pp. 69-87, (2018)
  • [5] LI Bingfan, LIU Gang, REN Shuyi, Et al., Non-isothermal crystallization kinetics of waxy crude oil, Petroleum Science and Technology, 37, 3, pp. 282-289, (2019)
  • [6] LI Na, MAO Guoliang, SHI Xianzhi, Et al., Advances in the research of polymeric pour point depressant for waxy crude oil, Journal of Dispersion Science and Technology, 39, 8, pp. 1165-1171, (2018)
  • [7] RIDZUAN N, ADAM F, YAACOB Z., Evaluation of the inhibitor selection on wax deposition for Malaysian crude oil, Petroleum Science and Technology, 34, 4, pp. 366-371, (2016)
  • [8] LI Yafei, Research on the development of chemical industry economy under the goal of energy saving and emission reduction, Chemical Engineering Design Communications, 47, 7, pp. 178-179, (2021)
  • [9] MACHADO Andre L C, LUCAS Elizabete F., The influence of vinyl acetate content of the poly(ethylene-co-vinyl acetate) (EVA) additive on the viscosity and the pour point of a Brazilian crude oil, Petroleum Science and Technology, 19, 1, pp. 197-204, (2001)
  • [10] KUMAR Shailesh, MAHTO Vikas, Emulsification of Indian heavy crude oil using a novel surfactant for pipeline transportation, Petroleum Science, 14, 2, pp. 372-382, (2017)
1234567