NPRA (National Petroleum Refiners Association) Q and A. 6. Feed and its flow top HDS (hydrodesulfurization) subject

Journal Article · Mon May 29 04:00:00 EDT 1978 · Oil Gas J.; (United States)

OSTI ID:5770022

The questions and answers (Q and A) reported from an NPRA session (St. Paul 10/12-14/77) on hydrotreating covered filters for handling 300/sup 0/-450/sup 0/F feed to a hydrotreater; filter beds on the top of the catalyst in naphtha hydrotreater reactors to reduce pressure-drop buildup; low-cost packing used in guard reactors; catalyst supports; hydrotreating a feed with greater than or equal to 4-6 ppm total nickel, vanadium, and iron; eliminating silica poisoning of HDS catalysts in units receiving feed from a coker or a visbreaker that uses an antifoaming agent; temperature variations within the reactor in middle-distillate desulfurizers that treat substantial quantities of fluid-catalytically cracked, light-cycle oil; catalyst poisoning by carbon monoxide in makeup hydrogen; block hydrotreating operation of naphtha and gas oil in one unit; the effect on product stability of lower start-of-run temperatures used to achieve product sulfur targets with the more active, new-generation desulfurization catalysts; length/diameter ratios being used in the design of new distillate and residua hydrotreating reactors; bypassing or channeling in distillate hydrotreaters; and emulsions in a high-pressure separator of a heavy gas-oil hydrotreater.

• OSTI ID: 5770022
• Journal Information: Oil Gas J.; (United States), Journal Name: Oil Gas J.; (United States) Vol. 76:22; ISSN OIGJA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400301* -- Organic Chemistry-- Chemical & Physicochemical Properties-- (-1987)
CATALYST SUPPORTS
CATALYSTS
CHEMICAL REACTIONS
COAL TAR OILS
DESULFURIZATION
DISTILLATES
ECONOMICS
ENERGY SOURCES
FOSSIL FUELS
FUELS
HIGH TEMPERATURE
HYDROGENATION
INDUSTRIAL PLANTS
INDUSTRY
NAPHTHA
OILS
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM INDUSTRY
PETROLEUM REFINERIES
PROCESSING