文献类型：期刊文献

中文题名：高硫石油焦的碱催化煅烧联合超声氧化深度脱硫（英文）

英文题名：Almost total desulfurization of high-sulfur petroleum coke by Na_2CO_3 -promoted calcination combined with ultrasonic-assisted chemical oxidation

作者：赵普杰[1];马成[1];王际童[1];乔文明[1,2];凌立成[1]

机构：[1]华东理工大学化学工程联合国家重点实验室,上海200237;[2]特种功能高分子材料及相关技术教育部重点实验室(B)(华东理工大学),上海200237

年份：2018

卷号：33

期号：6

起止页码：587

中文期刊名：新型炭材料

外文期刊名：New Carbon Materials

收录：CSTPCD;;EI(收录号：20191706835447);Scopus;WOS:【SCI-EXPANDED(收录号:WOS:000455987100008)】；北大核心:【北大核心2017】；CSCD:【CSCD2017_2018】；

基金：国家自然科学基金(U1710252,21506061);中国科协青年人才托举工程;中国石油科学与技术创新基金(2015D-5006-0405);上海市青年科技启明星计划项目(17QB1401700).

语种：中文

中文关键词：脱硫;碱催化;超声氧化;高硫石油焦

外文关键词：Desulfurization;Na 2 CO 3-promoted calcination;Ultrasonic oxidation;High-sulfur petroleum coke

摘要：采用两段脱硫方法对高硫石油焦进行深度脱硫,并对碱催化煅烧和超声辅助化学氧化阶段的工艺条件进行优化。结果表明,在Na2CO3添加量25%、900℃恒温2 h、粒径80μm、升温速率1℃/min条件下,石油焦脱硫率达到最大值为67. 2%。在氧化温度80℃、HNO_3浓度65 wt%、反应12 h、粒径80μm、液固比20 mL/g的条件下,超声辅助氧化法的总脱硫率达到93. 5%。在碱催化煅烧过程中,噻吩硫和亚砜的去除率分别为73. 4%和59. 8%,经后续的超声波辅助氧化后,噻吩硫和亚砜的总去除率分别为93. 6%和93. 3%。同时,通过XPS分析了高硫石油焦在碱催化煅烧和超声辅助氧化工段中的脱硫机理。
A two-stage desulfurization method for high-sulfur petroleum coke was developed using Na 2CO 3-promoted calcination,followed by ultrasonic-assisted chemical oxidation.Using a Na 2CO 3 to coke mass ratio of 1∶4 and an average particle size of 80μm for the coke,the desulfurization efficiency of the coke reached a maximum of 67.2%using Na 2CO 3-promoted calcination at 900℃for 2 h with a heating rate of 1℃/min.The total desulfurization after the subsequent ultrasonic-assisted oxidation with nitric acid(65 wt%)reached 93.5%at 80℃for 12 h using a nitric acid/coke ratio of 20 mL/g.The amounts of sulfur removed by the Na 2CO 3-promoted calcination were 73.4%of the thiophenic sulfur and 59.8%of the sulfoxide,with the total amounts removed after the ultrasonic-assisted oxidation being 93.6 and 93.3%respectively.Na 2CO 3 reacts with H 2S and shifts the chemical equilibrium to remove more sulfur during the calcination.Chemical oxidation converts dibenzothiophenic compounds to water-soluble ones.These jointly increase the desulfurization efficiency of the coke.