Process for increasing deasphalted oil production from upgraded residua

Patent · Tue Jun 16 04:00:00 EDT 1987

OSTI ID:6442335

Bristow, D J; Achia, B U; Evers, L J

This patent describes a process for increasing the production of deasphalted oil from a hydrocarbon feedstock comprising the steps of: (a) passing the hydrocarbon feedstock into a first distillation zone where the feedstock is separated into distillates and a first residuum; (b) passing the first residuum into a hydrotreating zone operating between about 315C to 425C, at an absolute pressure between 4000 to 10,000 cmHg where a hydrotreated first residuum is produced; (c) passing the hydrotreated first residuum into a second distillation zone where it is separated into distillates and a hydrotreated distillation residuum; and (d) mixing the hydrotreated distillation residuum with a solubilizing aid selected from the group consisting of catalytic cracker fractionator bottoms having an initial boiling point not less than 260C and not more than 430C (at 1 atmosphere), heavy cycle gas oil having a boiling point range of 200C to 420C (at 1 atmosphere) and heavy coker gas oil having a boiling point range of 300C to 550C (at 1 atmosphere) and feeding the resultant mixture into a deasphalting zone where the solubilizing aid comprises 30 to 60 LV% of the total feed to the deasphalting zone. The hydrotreated distillation residuum and solubilizing aid are contacted with a deasphalting solvent producing a liquid deasphalted oil extract and an asphaltic raffinate. The solubilizing aid inhibits the formation of a third asphaltic phase by promoting the solubility of the third phase in the asphaltic raffinate.

• Assignee: Exxon Research and Engineering Co., Florham Park, NJ
• Patent Number(s): US 4673485
• OSTI ID: 6442335
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
ASPHALTS
BITUMENS
BOILING POINTS
CHEMICAL REACTIONS
CHEMICAL REACTORS
CRACKING
DEASPHALTING
DECOMPOSITION
DISPERSIONS
DISTILLATES
DISTILLATION
ENERGY SOURCES
EXTRACTION
FOSSIL FUELS
FUELS
GAS OILS
HIGH TEMPERATURE
HYDROCRACKING
HYDROGENATION
MEDIUM PRESSURE
MIXING
MIXTURES
ORGANIC COMPOUNDS
OTHER ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PETROLEUM RESIDUES
PHYSICAL PROPERTIES
PYROLYSIS
SEPARATION PROCESSES
SOLVENTS
TAR
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE