Process for reducing resid hydrotreating solids in a fractionator

Patent · Tue Feb 28 04:00:00 EST 1989

OSTI ID:6021249

Peck, L B; Buttke, R D; Ott, G L; Cox, J A

A hydrotreating process is described comprising the steps of: feeding hydrogen-rich gases and a feedstock comprising a resid oil to a reactor train comprising a series of three ebullated bed reactors; conveying a hydrotreating catalyst to the reactor train; ebullating the hydrogen-rich gases and resid oil together in the presence of the hydrotreating catalyst in the ebullated bed reactors to produce hydrotreated oil containing asphaltenic solids; conveying the hydrotreated oil to a separator; separating the hydrotreated oil in the separator into a low solid stream of light hydrotreated oil and a solids-enriched stream of heavy hydrotreated oil; decreasing the pressure of the solids-enriched stream; conveying the solids-enriched decreased pressure stream to fractionators comprising an atmospheric tower and a vacuum tower; separating the solids-enriched stream into an atmospheric stream of distillate, an atmospheric stream of gas oil, and an effluent stream of atmospheric resid oil; conveying the atmospheric resid oil to the vacuum tower; separating the atmospheric resid oil in the vacuum tower into at least one vacuum stream of gas oil and a bottom stream of vacuum resid oil; and reducing the precipitation of asphaltenic solids in the fractionators and concurrently decreasing the concentration of asphaltenic solids in the resid oil discharged from the fractionators by injecting decanted oil into at least one of the fractionators.

• Assignee: Amoco Corp., Chicago, IL
• Patent Number(s): US 4808298
• OSTI ID: 6021249
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020800 -- Petroleum-- Waste Management
ASPHALTENES
ASPHALTS
BITUMENS
CATALYSTS
CHEMICAL REACTIONS
CHEMICAL REACTORS
DISTILLATES
EBULLATED BED
ENERGY SOURCES
FOSSIL FUELS
FRACTIONATION
FUELS
GAS OILS
HYDROGENATION
MECHANICAL STRUCTURES
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PETROLEUM RESIDUES
SEPARATION PROCESSES
SOLIDS
TAR
TOWERS
VACUUM SYSTEMS