Hydrodearomatization of petroleum fuel fractions on silica supported Ni–W sulphide with increased stacking number of the WS2 phase☆
Hydrodearomatization of petroleum fuel fractions on silica supported Ni–W sulphide with increased stacking number of the WS2 phase☆
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DOI：
10.1016/s0016-2361(02)00354-x
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发表时间：
2003-04
期刊：
影响因子：
7.4
通讯作者：
L. Vradman;M. Landau;M. Herskowitz
中科院分区：
文献类型：
--
作者：
L. Vradman;M. Landau;M. Herskowitz
以工业γ-Al_2O_3和SiO_2为载体的Ni-W催化剂在二苯并噻吩加氢脱硫(DBT HDS)中表现出相似的活性，而在甲苯加氢(HYD)中的活性是Ni-W/Al_2O_3催化剂的6倍。以石脑油和中间馏分油为原料，考察了不同操作条件下Ni-W/SiO_2催化剂的脱芳烃性能。在5.4 Mpa下，催化裂化汽油(340℃，空速1h−1)和轻质循环油(360℃，空速1h−1)的芳烃饱和度分别达到90%和50%。在相同的Ni-W/SiO_2和中间分离硫化氢的两段工艺中，在温度320℃、总空速0.5h−~1的条件下，柴油中芳烃饱和度可达90%。在相同条件下，Ni-W/Al_2O_3催化剂的总芳烃饱和度降低1.5~4倍。
Ni–W catalysts supported on commercial γ-alumina and silica displayed similar activity in dibenzothiophene hydrodesulfurization (DBT HDS), while the activity of the Ni–W/SiO2catalyst in toluene hydrogenation (HYD) was 6 times higher compared with Ni–W/Al2O3. The dearomatization performance of Ni–W/SiO2catalyst was tested over a wide range of operation conditions with naphtha and middle distillates. 90% saturation of aromatics in FCC naphtha (340°C, LHSV of 1h−1) and 50% in Light cyclic oil (LCO) (360°C, LHSV of 1h−1) was achieved at 5.4MPa. In a two stage process with the same Ni–W/SiO2and intermediate separation of hydrogen sulphide 90% saturation of aromatics in LCO was achieved at 320°C and total LHSV of 0.5h−1. At equal conditions, Ni–W/Al2O3catalyst yielded 1.5–4 times lower total aromatics saturation.