文献类型：期刊文献

英文题名：Novel design of lubricant-type vacuum distillation process for lube base oils production from hydrocracking tail oil

作者：Pan, Hui[1];Li, Xinshuang[1];Shen, Yichao[1];Wu, Xiang[1];Ju, Feng[1];Li, Yuzhe[2];Wu, Gaosheng[2];Ai, Bo[2];Xu, Baoyun[2];Ling, Hao[1]

机构：[1]East China Univ Sci & Technol, Sch Chem Engn, Shanghai 200237, Peoples R China;[2]Shanghai Res Inst Chem Ind CO Ltd, Shanghai 200062, Peoples R China

年份：2022

卷号：45

起止页码：121

外文期刊名：CHINESE JOURNAL OF CHEMICAL ENGINEERING

收录：;EI(收录号：20222112131830);WOS:【SCI-EXPANDED(收录号:WOS:000794074000012)】；

基金：This work was kindly funded by Shanghai Sailing Program (No. 19YF1410800) and National Natural Science Foundation of China (No. 21908056).

语种：英文

外文关键词：Hydrocracking tail oil; Lubricant-type vacuum distillation process; Thermal coupling intensified technology; Dividing-wall column

摘要：Dividing-wall columns (DWCs) are widely used in the separation of ternary mixtures, but rarely seen in the separation of petroleum fractions. This work develops two novel and energy-efficient designs of lubricant-type vacuum distillation process (LVDP) for the separation of hydroisomerization fractions (HIF) of a hydrocracking tail oil (HTO). First, the HTO hydroisomerization reaction is investigated in an experimental fixed-bed reactor to achieve the optimum liquid HIF by analyzing the impact of the oper-ating conditions. A LVDP used for HIF separation is proposed and optimized. Subsequently, two thermal coupling intensified technologies, including side-stream (SC) and dividing-wall column (DWC), are com-bined with the LVDP to develop side-stream vacuum distillation process (SC-LVDP) and dividing-wall col-umn vacuum distillation process (DWC-LVDP). The performance of LVDP, SC-LVDP, and DWC-LVDP are evaluated in terms of energy consumption, capital cost, total annual cost, product yields, and stripping steam consumption. The results demonstrates that the intensified processes, SC-LVDP and DWC-LVDP significantly decreases the energy consumption and capital cost compared with LVDP. DWC-LVDP further decreases in capital cost due to the removal of the side stripper and narrows the overlap between the third lube oils and fourth lube oils. This study attempts to combine DWC structure into the separation of petroleum fractions, and the proposed approach and the results presented provide an incentive for the industrial implementation of high-quality utilization of HTO through intensified LVDP. ?? 2021 The Chemical Industry and Engineering Society of China, and Chemical Industry Press Co., Ltd. All rights reserved.