文献类型：期刊文献

英文题名：Effect of Comb-type Copolymers with Various Pendants on Flow Ability of Heavy Crude Oil

作者：Xu, Jun[1];Jiang, Hejian[1];Li, Tao[1];Wei, Xiaoming[2];Wang, Tongshuai[1];Huang, Jing[1];Wang, Weina[1];Smith, Anthony L.[1];Wang, Jie[1];Zhang, Rui[1];Xu, Yisheng[1];Li, Li[1];Prud'homme, Robert K.[3,4];Guo, Xuhong[1,5,6]

机构：[1]E China Univ Sci & Technol, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Petrochina Liaohe Oilfield Co, Panjin 124010, Peoples R China;[3]Princeton Univ, Dept Chem Engn, Princeton, NJ 08544 USA;[4]Princeton Univ, Princeton Mat Inst, Princeton, NJ 08544 USA;[5]Shihezi Univ, Key Lab Xinjiang Uygur Autonomous Reg, Xinjiang 832000, Peoples R China;[6]Shihezi Univ, Engn Res Ctr Xinjiang Prod & Construct Corps Mat, Xinjiang 832000, Peoples R China

年份：2015

卷号：54

期号：19

起止页码：5204

外文期刊名：INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH

收录：;EI(收录号：20152200890534);WOS:【SCI-EXPANDED(收录号:WOS:000355054400002)】；

基金：Financial support by National Natural Science Foundation of China (51003028, 21004021, 21306049 and 51273063), the Fundamental Research Funds for the Central Universities, the Higher School Specialized Research Fund for the Doctoral Program (20110074110003), and 111 Project Grant (B08021) is gratefully acknowledged. The authors also thank Petrochina Liaohe Oilfield Company for affording oil samples and technological supports.

语种：英文

外文关键词：Asphaltenes - Precipitation (chemical) - Naphthalene - Crude oil - Yield stress - Differential scanning calorimetry - Petroleum transportation - Temperature

摘要：Modification Of the paraffin crystallization and flow ability of waxy crude oil is of vital importance during transportation and restart processes at low temperature. To investigate the influence of pendants in comb-type copolymers on, the cold flow ability of crude oil, maleic anhydride-alpha-octadecene copolymer and its derivatives with octadecyl (MAC) phenyl (AMAC), or naphthalene (NMAC) pendants were synthesized. These derivatives, when added to waxy crude oil, change the size and quantity of the paraffin crystals observed by polarizing light microscopy (PLM),, improve the flow ability of waxy oils by reducing the Viscosity and yield stress revealed by rheometer, and decrease the paraffin crystallization temperature and quantity of wax precipitation determined by differential scanning calorimetry (DSC). AMAC had the greatest effect followed by MAC and NMAC, respectively. It seems that small aromatic pendants' improve the flow ability of waxy oils by adsorbing on the surface of asphaltenes, while large aromatic pendants. impair the assembly of copolymers, with asphaltenes by a higher steric hindrance.