Deep desulfurization of diesel fuels: kinetic modeling of model compounds in trickle-bed

被引：43

作者：

Vradman, L ^{[1
]}

Landau, MV ^{[1
]}

Herskowitz, M ^{[1
]}

机构：

[1] Ben Gurion Univ Negev, Dept Chem Engn, Blechner Ctr Ind Catalysis & Proc Dev, IL-653 Beer Sheva, Israel

来源：

CATALYSIS TODAY | 1999年 / 48卷 / 1-4期

基金：

以色列科学基金会;

关键词：

hydrodesulfurization; diesel fuel;

D O I：

10.1016/S0920-5861(98)00356-3

中图分类号：

O69 [应用化学];

学科分类号：

081704 ;

摘要：

Five catalysts with different hydrodesulfurization (HDS) and hydrogenation activity were tested in HDS of fresh crude heavy atmospheric gas oil (HAGO) (1.33 wt% S), two partially hydrotreated HAGO (1100 and 115 ppm S) and two model compounds, dibenzothiophene (DBT) and 4,6-dimethyldibenzothiophene (DMDBT), dissolved in model solvents and HAGO. Aromatic compounds in the liquid decreased significantly the HDS rate of 4,6-DMDBT, especially for catalysts with high hydrogenation activity. H2S displayed a similar inhibition effect with all catalysts. These effects were extremely pronounced in HAGO where the DBT HDS rate decreased by a factor of 10 while 4,6-DMDBT - of 20 relative to paraffinic solvent. The feasibility of using a highly active hydrogenation catalyst for deep HDS of HAGO is diminished by the strong impact of aromatics. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：41 / 48

页数：8

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[2]

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