The catalytic activity of CoMoS /CNT towards the Egyptian heavy vacuum gas oil hydrotreating was studied. The delivered CNT was functionalized with 6 mol /L HNO_3. The CNT were loaded with 12% MoO_3( by weight) and 0....The catalytic activity of CoMoS /CNT towards the Egyptian heavy vacuum gas oil hydrotreating was studied. The delivered CNT was functionalized with 6 mol /L HNO_3. The CNT were loaded with 12% MoO_3( by weight) and 0.7 Co /Mo atomic ratio with impregnation methods. The γ-Al_2O_3 catalyst was also prepared by impregnation method to compare both catalysts activities.The analysis tools such XRD,Raman spectroscopy,TEM,and BET were used to characterize the catalysts. The autoclave reactor was used to operate the hydrotreating experiments. The hydrotreating reactions were tested at various operating conditions of temperature 325-375 ℃,pressure 2-6 MPa,time 2-6 h,and catalyst /oil ratio( by weight) of 1 ∶75,1 ∶33 and 1 ∶10. The results revealed that the CoMoS /CNT was highly efficient for the hydrotreating more than the CoMoS /γ-Al_2O_3. Also, the hydrodesulfurization( HDS) increased with increasing catalyst /oil ratio. Additionally,results showed that the optimum condition was temperature 350℃,pressure 4 MPa,catalyst /oil ratio of 1 ∶75 for 2 h. Furthermore,even at low CoMoS /CNT catalyst /oil ratio of 1 ∶75,an acceptable HDS of 77.1% was achieved.展开更多
以煤焦油低于360℃的馏分油为原料,采用Ni WP/γ-Al_2O_3商业催化剂,在500 m L高压釜反应器中进行油品加氢实验,通过对原料油及加氢产物的GC-MS分析,研究了反应温度、反应压力及反应时间对煤焦油馏分油加氢产物分布及油品性质的影响。...以煤焦油低于360℃的馏分油为原料,采用Ni WP/γ-Al_2O_3商业催化剂,在500 m L高压釜反应器中进行油品加氢实验,通过对原料油及加氢产物的GC-MS分析,研究了反应温度、反应压力及反应时间对煤焦油馏分油加氢产物分布及油品性质的影响。实验结果表明,煤焦油原料油中萘类和酚类的含量(w)最高,分别为23.66%和30.12%;加氢反应过程中,高温不利于萘类向烷基四氢萘的转化,但高压却有利于此过程,并且萘类的加氢反应主要发生在第一个环上,加氢产物主要为苯烯烃和烷基四氢萘;高温高压均有利于酚类的加氢转化,加氢产物主要为烷基苯和环烷烃;加氢后产物的饱和度提高,杂原子物质含量减小,油品得到轻质化。展开更多
文摘The catalytic activity of CoMoS /CNT towards the Egyptian heavy vacuum gas oil hydrotreating was studied. The delivered CNT was functionalized with 6 mol /L HNO_3. The CNT were loaded with 12% MoO_3( by weight) and 0.7 Co /Mo atomic ratio with impregnation methods. The γ-Al_2O_3 catalyst was also prepared by impregnation method to compare both catalysts activities.The analysis tools such XRD,Raman spectroscopy,TEM,and BET were used to characterize the catalysts. The autoclave reactor was used to operate the hydrotreating experiments. The hydrotreating reactions were tested at various operating conditions of temperature 325-375 ℃,pressure 2-6 MPa,time 2-6 h,and catalyst /oil ratio( by weight) of 1 ∶75,1 ∶33 and 1 ∶10. The results revealed that the CoMoS /CNT was highly efficient for the hydrotreating more than the CoMoS /γ-Al_2O_3. Also, the hydrodesulfurization( HDS) increased with increasing catalyst /oil ratio. Additionally,results showed that the optimum condition was temperature 350℃,pressure 4 MPa,catalyst /oil ratio of 1 ∶75 for 2 h. Furthermore,even at low CoMoS /CNT catalyst /oil ratio of 1 ∶75,an acceptable HDS of 77.1% was achieved.
文摘以煤焦油低于360℃的馏分油为原料,采用Ni WP/γ-Al_2O_3商业催化剂,在500 m L高压釜反应器中进行油品加氢实验,通过对原料油及加氢产物的GC-MS分析,研究了反应温度、反应压力及反应时间对煤焦油馏分油加氢产物分布及油品性质的影响。实验结果表明,煤焦油原料油中萘类和酚类的含量(w)最高,分别为23.66%和30.12%;加氢反应过程中,高温不利于萘类向烷基四氢萘的转化,但高压却有利于此过程,并且萘类的加氢反应主要发生在第一个环上,加氢产物主要为苯烯烃和烷基四氢萘;高温高压均有利于酚类的加氢转化,加氢产物主要为烷基苯和环烷烃;加氢后产物的饱和度提高,杂原子物质含量减小,油品得到轻质化。
