Hydrotreating catalysts for diesel aromatics saturation

Journal Article · Tue Jun 01 04:00:00 EDT 1993 · Hydrocarbon Processing; (United States)

OSTI ID:6167326

Cooper, B H; Stanislaus, A; Hannerup, P N ^[1]

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1. Haldor Topsoe A/S Research Laboratories, Copenhagen (Denmark)

The aromatics content of diesel feedstocks can vary widely. Straight-run stocks typically contain 20 to 40 vol% aromatics and cracked stocks 40 to 70 vol%. Thus, requirements for aromatics saturation range from moderate to severe depending on refinery location and feedstock availability. Existing middle distillate hydrotreaters designed to reduce sulfur levels can reduce aromatics content only marginally. Considerable attention has, in recent years, been paid to new catalysts and processes for aromatics saturation. The catalyst systems investigated are: (1)Conventional hydrotreating catalysts in single-stage operation; (2)Pt/alumina in two-stage operation; and (3)Sulfur-tolerant noble-metal catalyst in two-stage operation. Which of these systems should be used for a given service depends on many factors, but generally, the NiMo + NiW system is preferred at moderate levels of saturation, while for deep aromatics saturation the system using a sulfur-tolerant noble-metal catalyst is preferred. A comparison of the conditions necessary to obtain given aromatic specifications is made for all four systems. The feedstocks and their properties are summarized in a table. The paper discusses the four catalyst systems mentioned above and operating conditions.

• OSTI ID: 6167326
• Journal Information: Hydrocarbon Processing; (United States), Journal Name: Hydrocarbon Processing; (United States) Vol. 72:6; ISSN HYPRAX; ISSN 0018-8190
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ALUMINIUM COMPOUNDS
ALUMINIUM OXIDES
AROMATICS
BIMETALS
CATALYST SUPPORTS
CATALYSTS
CHALCOGENIDES
CHEMICAL REACTIONS
COMPARATIVE EVALUATIONS
DIESEL FUELS
DISTILLATES
ELEMENTS
ENERGY SOURCES
EVALUATION
FOSSIL FUELS
FUELS
GAS OILS
HYDROGENATION
LIQUID FUELS
METALS
MOLYBDENUM
NICKEL
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PERFORMANCE
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PLATINUM
PLATINUM METALS
REMOVAL
SULFUR CONTENT
TRANSITION ELEMENTS
TUNGSTEN