金属氯化物对加氢柴油的络合脱硫研究  

COMPLEXATION DESULFURIZATION OF HYDROFINING DIESEL BY METAL CLORIDES

作　　者：杨冬荣[1] 王延臻[1] 宋春敏[1] 段红玲[1] Yang Dongrong;Wang Yanzhen;Song Chunmin;Duan Hongling(State Key Laboratory of Heavy Oil Processing,China University of Petroleum(East China),Qingdao,Shandong 266580)

机构地区：[1]中国石油大学(华东)重质油国家重点实验室,山东青岛266580

出　　处：《石油炼制与化工》2020年第7期21-26,共6页Petroleum Processing and Petrochemicals

摘　　要：苯并噻吩类化合物是加氢柴油中的主要残留硫化物,基于噻吩类硫化物与金属离子络合反应机理,选取4种金属氯化物CuCl2,AlCl3,FeCl3,MnCl2及其双组分复配剂作为络合脱硫剂,对硫质量分数为592μg/g的浅度加氢柴油进行脱硫研究。结果表明:单组分金属氯化物中AlCl3的脱硫效果最好,双组分金属氯化物中CuCl2/AlCl3质量比为1∶1时的脱硫效果最好;工艺条件相同时,双组分金属氯化物CuCl2/AlCl3的脱硫效果比单组分金属氯化物的脱硫效果好;综合考虑工艺成本和脱硫周期等因素,浅度加氢柴油脱硫的最佳工艺条件为:反应温度50℃,反应时间30 min,络合脱硫剂加入量(w)10%。在最佳工艺条件下进行脱硫试验,采用AlCl3为络合脱硫剂时脱硫率达到86%,采用CuCl2/AlCl3(质量比为1∶1)为络合脱硫剂时脱硫率达到95%。Benzothiophenes were the main residual sulfides in hydrofining diesels.Based on the complexation mechanism between thiophenes and metal ions,four kinds of metal chlorides such as CuCl2,AlCl3,FeCl3 and MnCl2 were selected as complexation desulfurizers for desulfurization research on shallow hydrogenated diesel with sulfur mass fraction of 592μg/g.The results indicated that at the same conditions,the desulfurization effect of AlCl3 was the best in one-component metal chloride,and that of CuCl2/AlCl3 in two-component metal chloride was the best when the mass ratio of CuCl2/AlCl3 was 1∶1.Considering the process cost and operation cycle,the optimum process conditions were as follows:50℃,reaction 30 min with the mass fraction of complex desulfurizer of 10%.Under optimal process conditions,the desulfurization rate of AlCl3 can reach 86%,and that of CuCl2/AlCl3 can reach 95%when the mass ratio of CuCl2/AlCl3 was 1∶1.

关 键 词：金属氯化物 苯并噻吩 络合脱硫 加氢柴油 

分 类 号：X70[环境科学与工程—环境工程]