文献类型：期刊文献

英文题名：Investigation of demetallization of Ni and V in crude oil using spherical polyelectrolyte brushes with adjuvant

作者：Cui, Lingrui[1];Liu, Xu[1];Ren, Mannian[2];Xu, Jun[1];Cao, Fahai[1]

机构：[1]East China Univ Sci & Technol, Engn Res Ctr Large Scale Reactor, Shanghai 200237, Peoples R China;[2]Sinopec Luoyang Co, Luoyang 471003, Peoples R China

年份：2024

卷号：378

外文期刊名：FUEL

收录：;EI(收录号：20243516943011);WOS:【SCI-EXPANDED(收录号:WOS:001306308400001)】；

基金：This research is supported by the National Natural Science Founda-tion of China (52174023) and China Petroleum Engineering Corp., Ltd. (CPEC) (2021ZYGC-01-01) . The authors also would like to acknowledge the raw material support for Jilin Petrochemical Synthetic Resin Plant and technological support from Sinopec Luoyang Company. The authors thank Research Center of Analysis and Test of East China University of Science and Technology for the help on the characterization. The com-putations were performed at the High-Performance Computing Center (HPCC) of East China University of Science and Technology, and we thank the HPCC staff for their excellent service.

语种：英文

外文关键词：Crude oil; Nickel removal; Vanadium removal; Spherical polymer brush; Adjuvant

摘要：Nickel and vanadium in crude oil adversely affects the quality of petroleum coke and refining process. Polymer brushes bearing high-density ligands have shown promising nickel removal ability. In this work, submicron polybutadiene (PB) grafted by aminodithio- carbamate acrylamide (PAMDTC@PB) was prepared and characterized by the infrared spectroscopy, dynamic light scattering, and elemental analysis. Based on results of molecular simulation, PAMDTC was selected as ligand molecule at first. Then the nickel and vanadium removal rates by PAMDTC@PB and traditional polyacrylic acid brushes (PAA@PB) were evaluated through the electric desalination process, both in the model and real oil samples. The result shows that S atom in AMDTC is most likely to chelate with metal porphyrin compounds and AMDTC molecule presents highest chelating activity. Compared with PAA@PB, the removal rate of Ni and V porphyrin compounds with the aid of PAMDTC@PB increases significantly, with an optimized removal rate of 46.91 % and 56.81 %. To achieve better metal removal efficiency and higher utilization rate of prepared polymer brushes, sodium dimethyl dithiocarbamate (SDD) is introduced into the electric desalination process as a adjuvant. The results indicate that the addition of SDD leads to a increment of 10-30 % to the removal rate of Ni and V and a reduction of brush dosage by 200-400 ppm in the electric desalination process, exhibiting great potential of industrial applications of novel desalination process with adjuvant.