Spherical polymer brushes bearing imidazole groups as novel nickel remover for crude oil

被引:10
作者
Xu, Jun [1 ]
Chen, Limei [1 ]
Geng, Tong [1 ]
Ren, Mannian [2 ]
Wang, Shizhong [3 ]
Song, Zhijun [3 ]
Cao, Fahai [1 ,4 ]
机构
[1] East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China
[2] Sinopec Luoyang Co, Luoyang 471003, Peoples R China
[3] Petrochina Liaohe Oilfield Co, Panjin 124010, Peoples R China
[4] East China Univ Sci & Technol, Minist Educ, Key Lab Coal Gasificat & Energy Chem Engn, Shanghai 200237, Peoples R China
关键词
Spherical polymer brush; Nickel removal; Electric demulsification; Crude oil; HEAVY-METAL IONS; MAGNETIC NANOPARTICLES; CAPACITIVE DEIONIZATION; 3D GRAPHENE; ADSORPTION; PORPHYRINS; VANADIUM; SILICA; MODEL;
D O I
10.1016/j.fuel.2018.04.004
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Nickels in crude oil often deactivate the hydrocracking and catalytic cracking catalysts. Strong acids are widely applied to remove these nickels, although they cause severe corrosion to the subsequent catalytic cracking and processing equipment. Polymer brushes bearing specific groups which can adsorb nickel ions are considered as desirable non-corrosive nickel removal agents. In this work, micro-sized spherical polymer brushes bearing imidazole groups (PVIm@SiO2) are first applied to remove trace nickels in crude oil with the help of electric demulsification. The effects of polymer brushes concentration, oil/water ratio and electric demulsification temperature on nickel removal efficiency are investigated. Compared with the monomer (VIm) and polymer (PVIm) bearing imidazole groups, polymer brushes exhibit a much higher nickel removal efficiency than the other two, which is approximately 66.7%. In addition, the regeneration of polymer brushes are achieved by a rapid and simple process using diluted HCl. As well as, the removal efficiency of Ni remains 62.5% in 5 consecutive cycles. Consequently, these spherical polymer brushes bearing imidazole groups are reasonable nickel remover for crude oil.
引用
收藏
页码:47 / 53
页数:7
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