Effect of surfactants and their blend with silica nanoparticles on wax deposition in a Malaysian crude oil
投稿时间:2018-03-13  
英文关键词:Cold finger, Nanoparticles, Wax deposition, Wax inhibitor, Surfactant, Wax appearance temperature
基金项目:The authors wish to thank UCSI University and the Universiti Malaysia Pahang for their continuous support on this research. We would like to extend sincere thanks to Ms. Donna Zhi from RunHe Co. Ltd. for her ongoing support, MPOB for providing the chemicals and Petronas Penapisan Terengganu for contributing the crude oil samples. The authors would also like to extend their gratitude to Lion Corporation (Tokyo, Japan) for supplying the cationic Gemini surfactant used in this work.
作者单位
Zhen Hao Lim Department of Chemical and Petroleum Engineering, UCSI University, 56000 Cheras, Kuala Lumpur, Malaysia 
Hikmat Said Al Salim Department of Chemical and Petroleum Engineering, UCSI University, 56000 Cheras, Kuala Lumpur, Malaysia 
Norida Ridzuan Faculty of Chemical and Natural Resources Engineering, Universiti Malaysia Pahang, Lebuhraya Tun Razak, 26300 Kuantan, Malaysia 
Ronald Nguele Resource Production and Safety Engineering Laboratory, Kyushu University, Fukuoka 819-0395, Japan 
Kyuro Sasaki Resource Production and Safety Engineering Laboratory, Kyushu University, Fukuoka 819-0395, Japan 
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英文摘要:
      The present study investigated the wax deposition tendencies of a light Malaysian crude oil (42.4° API), and the wax inhibiting potential of some surfactants and their blends with nanoparticles. With the knowledge that the majority of the wax inhibition research revolved around polymeric wax inhibitors, which cause environmental issues, we highlighted the potential of surfactants and their blend with SiO2 nanoparticles as wax deposition inhibitors. Different surfactants including oil-based, silane-based, Gemini and bio-surfactants were considered as primary surfactants. The primary surfactants and their respective blends at a concentration of 400 ppm were screened as wax inhibitor candidates using cold finger apparatus. The screening results showed a significant influence on the paraffin inhibition efficiency on wax deposition by using 400 ppm of silane-based surfactant, which decreased the wax deposition up to 53.9% as compared to that of the untreated crude oil. The inhibition efficiency among the silane-based surfactant (highest) and bio-surfactant (lowest) revealed an appreciable difference up to 36.5%. Furthermore, the wax from the treated sample was found to deposit in a thin gel-like form, which adhered inadequately to the surface of the cold finger. A further investigation by blending the 400 ppm silane-based surfactant with a 400 ppm SiO2 nanoparticle suspension in a load ratio of 3:1 found that the wax inhibition decreased up to 81% as compared to the scenario when they were not added. However, we have shown that the synergy between the silane-based surfactant and the nanoparticles is influenced by the concentration and load ratio of surfactant and nanoparticles, residence time, differential temperature and rotation rate.
Zhen Hao Lim,Hikmat Said Al Salim,Norida Ridzuan,Ronald Nguele,Kyuro Sasaki,2018.Effect of surfactants and their blend with silica nanoparticles on wax deposition in a Malaysian crude oil.Petroleum Science,(3):577~590.
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