Abstract
Various experimental tests were conducted in a fixed-bed pilot plant in order to study the liquid phase sulfiding of a NiMo commercial catalyst. Four sulfiding feeds were employed in the present work: SRGO, SRGO + 1 wt.% sulfur DMDS, HDS-SRGO + 1 wt.% sulfur DMDS, and HDS-SRGO + 1.7 wt.% sulfur DMDS. Three sulfiding temperatures were evaluated: 290, 320, and 350°C. Drying and soaking of the catalyst were carried out before presulfiding. Each sulfided catalyst was evaluated in the hydrotreating of SRGO at the following conditions: 54 kg/cm2 pressure, 2.0 h-1 LHSV, 2000 ft3/bbl H2-to-oil ratio, and temperature of 340-380°C. SRGO + 1 wt.% sulfur DMDS was the best sulfiding feed. The catalyst sulfided at high temperature exhibited better activity. It was found that about 50% of the carbon on the catalyst after reaction is deposited during sulfiding step.
Original language | English |
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Pages (from-to) | 75-81 |
Number of pages | 7 |
Journal | Catalysis Today |
Volume | 98 |
Issue number | 1-2 SPEC. ISS. |
DOIs | |
State | Published - 24 Nov 2004 |
Externally published | Yes |
Keywords
- Hydrodesulfurization
- NiMo catalyst
- Sulfiding