渣油加氢处理过程中硫的分布与脱除规律研究  

Distribution and removal of sulfur during hydrotreating of residue

作　　者：张会成[1] 颜涌捷[1] 孙万付[2] 戴咏川[3] 

机构地区：[1]华东理工大学能源化工系,上海200237 [2]抚顺石油化工研究院,辽宁抚顺113001 [3]辽宁石油化工大学,辽宁抚顺113001

出　　处：《燃料化学学报》2007年第5期628-631,共4页Journal of Fuel Chemistry and Technology

基　　金：中国石油化工股份有限公司资助(104024)

摘　　要：The removal of sulfur and changes of sulfur forms in Oman vacuum residue by hydrotreating were investigated on a pilot plant.The results illustrated that the content of total sulfur in hydrotreated residue reduced gradually with the hydrotreating.Over 80% of total sulfur in the residue can be removed at three temperatures(T-5 ℃,T ℃,T+5 ℃),although a higher temperature can enhance the desulfurization effect.The residue fractions of aromatic,resin,asphaltene and saturate contain about 60%,32%,8% and 1% of total sulfur,respectively;however,the sulfur content in each fraction is in the order of asphaltene>resin>aromatic>saturate.The sulfidic sulfur content in the residue fraction decreased and the thiophenic sulfur content increased with the heaviness of residue fraction.Sulfur forms exhibit influence on the hydrodesulfurization effect;the removal of sulfidic sulfur is much easier than that of thiophenic sulfur.The residue fractions are also different in the desulphurization effect,depending on their molecular size and structure;the sulfur removal ratio of saturate and aromatic is higher than that of resin and asphaltene.The removal of sulfur and changes of sulfur forms in Oman vacuum residue by hydrotreating were investigated on a pilot plant.The results illustrated that the content of total sulfur in hydrotreated residue reduced gradually with the hydrotreating.Over 80% of total sulfur in the residue can be removed at three temperatures(T-5 ℃,T ℃,T+5 ℃),although a higher temperature can enhance the desulfurization effect.The residue fractions of aromatic,resin,asphaltene and saturate contain about 60%,32%,8% and 1% of total sulfur,respectively;however,the sulfur content in each fraction is in the order of asphaltene>resin>aromatic>saturate.The sulfidic sulfur content in the residue fraction decreased and the thiophenic sulfur content increased with the heaviness of residue fraction.Sulfur forms exhibit influence on the hydrodesulfurization effect;the removal of sulfidic sulfur is much easier than that of thiophenic sulfur.The residue fractions are also different in the desulphurization effect,depending on their molecular size and structure;the sulfur removal ratio of saturate and aromatic is higher than that of resin and asphaltene.

关 键 词：渣油 沥青质 加氢处理 硫醚硫 噻吩硫 

分 类 号：TE624[石油与天然气工程—油气加工工程]