文献类型：期刊文献

英文题名：Reaction laws of polycyclic aromatic hydrocarbons and heteroatomic compounds in hydrocracking process

作者：Qin, Xinglong[1];Yu, Wenxin[1];Ye, Lei[1];Shen, Haitao[1];Liu, Jichang[1,2];Murad, Alqubati[1];Xie, Jinquan[1];Hou, Lixin[1];Pu, Xin[1];Han, Xin[1];Li, Jiangbing[2];Wang, Rongjie[2];Liu, Ning[2]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, State Key Lab Chem Engn, Shanghai 200237, Peoples R China;[2]Shihezi Univ, Sch Chem & Chem Engn, Key Lab Green Proc Chem Engn Xinjiang Bingtuan, Shihezi 832003, Peoples R China

年份：2023

卷号：332

外文期刊名：FUEL

收录：;EI(收录号：20224312989661);WOS:【SCI-EXPANDED(收录号:WOS:000874674400004)】；

基金：We acknowledge financial support from Joint Fund by the National Natural Science Foundation of China and PetroChina [grant numbers U1862204].

语种：英文

外文关键词：Structure Oriented Lumping; Reaction kinetic model; Hydrocracking process; Polycyclic aromatic hydrocarbons; Heteroatomic compounds

摘要：Based on the Structure Oriented Lumping (SOL) method, a molecular-level reaction kinetic model for hydro -cracking process was established to investigate the reaction laws of polycyclic aromatic hydrocarbons (PAHs) and heteroatomic compounds in hydrocracking process and calculate the molecular compositions of hydro -cracking products. Molecules showed different reaction laws due to the differences of the initial contents, the structural increments and their positions in the reaction network. Since the hydrodenitrogenation reactions of indole and carbazole homologs were more difficult to carry out than the hydrodesulfurization reactions of benzothiophene and dibenzothiophene homologues, the denitrification rate was lower than the desulphurization rate at the outlet of the hydrotreating section. When the reaction temperature of the hydrotreating section was 360 degrees C, the conversion rates of sulfides and nitrides were 98.4 % and 91.3 %, respectively. The increase of re-action temperature intensified the hydrogenation saturation of aromatics, the ring opening of naphthenes and the cracking of paraffins. As the reaction temperature of the hydrocracking section rose from 370 degrees C to 410 degrees C, more isomerized carbon ions were generated due to the beta-position cracking of paraffins. The mass ratio of methyl -butane to n-pentane in light naphtha increased from 1.29 to 3.08. The increase of reaction temperature accel-erated the side chain cracking reactions of naphthenes with 4 or more carbon atoms in the side chains, and generates more naphthenes with 0 to 3 carbon atoms in the side chains. Aromatics mainly underwent the ring-by -ring hydrogenation saturation reactions in the hydrotreating section, and bicyclic aromatic hydrocarbons was significantly easier to be hydrogenated than monocyclic aromatic hydrocarbons.