NPRA (National Petroleum Refiners Association) Q and A. 7. Experience grows in HDS (hydrodesulfurization) catalysts
The questions and answers (Q and A) reported from an NPRA session (St. Paul 10/12-14/77) cover presulfiding recommendations for new-generation cobalt/molybdenum and nickel/molybdenum catalysts; the minimum amount of sulfur addition needed when presulfiding a naphtha-pretreating catalyst; need for sulfiding of regenerated HDS catalyst; an economic comparison of inert gas handling and custom regeneration vs. in-situ regeneration of HDS catalyst considering EPA stack gas regulations; the minimum acceptable crush strength and the maximum percentage attrition loss for extruded or spherical regenerated hydrotreating catalyst; protection of personnel from dust when handling nickel-molybdenum catalyst; deactivation rate of the new-generation, high-activity HDS catalysts; increased catalyst deactivation rates when desulfurizing heavier feeds; two-stage HDS with different catalysts, compared with one catalyst in two reactors; nickel-molybdenum vs. cobalt-molybdenum catalysts for desulfurization, denitrogenation, and aromatics saturation of naphthas, middle distillates, and heavy gas oils.
- OSTI ID:
- 5799466
- Journal Information:
- Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 76:24; ISSN OIGJA
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020400* -- Petroleum-- Processing
CATALYSTS
CHEMICAL ACTIVATION
CHEMICAL REACTIONS
COAL TAR OILS
COBALT
DESULFURIZATION
DISTILLATES
ELEMENTS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HYDROGENATION
METALS
MOLYBDENUM
NAPHTHA
NICKEL
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
TRANSITION ELEMENTS