Process for upgrading residuums by combined donor visbreaking and coking

Patent · Tue Aug 05 04:00:00 EDT 1986

OSTI ID:5266446

Lutz, I H; Wilson, T M

A process is described for upgrading petroleum residuums to more valuable products comprising the steps of mixing a hydrogenated aromatic donor fraction with the petroleum residuums to form a vis breaker feed; donor visbreaking the visbreaker feed in a thermal visbreaker to crank heavy hydrocarbons into lighter products wherein the hydrogenated fraction in the visbreaker feed reacts to donate hydrogen to prevent formation of coke and reduce the quantity of coke precursors; coking a coker feed including substantially all of the high boiling portion and substantially all of the aromatic donor fraction of the effluent from the visbreaker in a coker under nonpremium coker conditions to produce coke and overhead products whereby the reduction of coke precursors by the donor visbreaking reduces the quantity of coke product and increases the quantity of overhead products; fractionating the overhead products from the coker in a fractionater to produce one or more light product fractions, and an aromatic donor recycle fraction; and hydrogenating the aromatic donor recycle fraction from the fractionator to form the hydrogenated donor formation for the visbreaker feed.

• Assignee: DM International, Inc., Tulsa, OK
• Patent Number(s): US 4604186
• OSTI ID: 5266446
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020500 -- Petroleum-- Products & By-Products
AROMATICS
BOILING
CARBONIZATION
CATALYTIC CRACKING
CHEMICAL REACTION YIELD
CHEMICAL REACTIONS
CHEMICAL REACTORS
COKE
COKING
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FRACTIONATION
FUELS
HYDROGENATION
MIXING
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PHASE TRANSFORMATIONS
PYROLYSIS
SEPARATION PROCESSES
THERMOCHEMICAL PROCESSES
VISCOSITY
YIELDS