典型文献
Wet Desulfurization of High-Sulfur Petroleum Coke Improved via Pre-calcination, H2O2 Treatment, and Ultrasound
文献摘要：
This work reports an improved method for the wet desulfurization of high-sulfur petroleum coke (petcoke) powder based on the combination of pre-calcination, H2O2, and ultrasound. The results demonstrated that over 45％ of the sulfur atoms were efficiently removed from Tianjin coke and Qilu coke (particle size < 0.1 mm) by pre-calcination at 800 ℃ for 6 h followed by desulfurization with HNO3 (8 mol/L) and H2O2 (2 mol/L) solution at a reaction temperature of 60 ℃, a reaction time of 6 h, a liquid-to-solid ratio of 10 mL/g, and a 40 kHz ultrasonic power of 400 W. In addition, the specific surface area of the petcoke particles increased from 0.7 to 301.49 m2/g. After desulfurization, the pore size distribution of the petcoke particles was more concentrated on micropores compared with the samples prior to petcoke treatment. Reactive force field molecular dynamics simulation results indicated that HNO3 continuously oxidized the carbon atoms adjacent to sulfur atoms in the petcoke macromolecules and promoted sulfur removal from petcoke via the cleavage of C–S bonds. The sulfur transformation mechanism can be summarized as follows: thiophene sulfur → branched chain carbon sulfur → CO2S → C2O2S → C2O3NS → C2O4S → CO2S.
文献关键词：
中图分类号：
作者姓名：
Wang Gang;Mao Qiuyun;Liu Wei;Yu Zhou;Zhong Qifan
作者机构：
School of Metallurgy and Environment,Central South University,Changsha 410083,China;Department of Educational Science,Hunan First Normal University,Changsha 410205,China
文献出处：
引用格式：
[1]Wang Gang;Mao Qiuyun;Liu Wei;Yu Zhou;Zhong Qifan-.Wet Desulfurization of High-Sulfur Petroleum Coke Improved via Pre-calcination, H2O2 Treatment, and Ultrasound)[J].中国炼油与石油化工（英文版）,2022(02):34-45
A类：
petcoke,CO2S,C2O2S,C2O3NS,C2O4S
B类：
Wet,Desulfurization,High,Sulfur,Petroleum,Coke,Improved,via,Pre,calcination,H2O2,Treatment,Ultrasound,This,work,reports,improved,method,wet,desulfurization,high,petroleum,powder,combination,pre,ultrasound,results,demonstrated,that,over,atoms,were,efficiently,removed,from,Tianjin,Qilu,size,by,followed,HNO3,solution,reaction,temperature,liquid,solid,ratio,kHz,ultrasonic,power,In,addition,specific,surface,area,particles,increased,After,distribution,was,more,concentrated,micropores,compared,samples,prior,treatment,Reactive,force,field,molecular,dynamics,simulation,indicated,continuously,oxidized,carbon,adjacent,macromolecules,promoted,removal,cleavage,bonds,transformation,mechanism,can,be,summarized,follows,thiophene,branched,chain
AB值：
0.53138
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