Co-processing of straight run vacuum resid and cracked residua

Patent · Tue Aug 05 04:00:00 EDT 1986

OSTI ID:5374959

McConaghy, Jr, J R; Anderson, A L

A process is described for simultaneously processing straight run vacuum resid and cracked residuum to produce distilled products and a 1,000/sup 0/F+ fraction in an amount of not more than the sum of 40 volume percent of the 1,000/sup 0/F+ material in the straight run vacuum resid and the 1,000/sup 0/F+ fraction of the cracked residuum. The process consists of: (a) combining a partially hydrogenated donor diluent solvent with the vacuum resid; (b) subjecting the combined vacuum resid and solvent to hydrogen donor diluent cracking under conditions at which at least 60 volume percent of the fraction of the resid boiling above 1,000/sup 0/F is converted to material boiling below 1,000/sup 0/F; (c) combining the effluent from the donor diluent cracking step with quench material selected from the group consisting of cracked residuum, vacuum gas oil and mixtures thereof in an amount sufficient to substantially prevent coke formation at the donor diluent cracking furnace outlet; (d) combining with the effluent from the donor diluent cracking step a cracked residuum in an amount of from 3 to 100 volume percent of the straight run vacuum resid; (e) subjecting the effluent cracked residuum, quench material and cracked residuum to fractionation to produce distilled products and a fractionator bottoms stream; (f) subjecting the fractionator bottoms stream to vacuum distillation to produce a residual product and a vacuum gas oil stream comprised in part of the aromatic components of the cracked residuum; (g) subjecting at least a part of the vacuum gas oil stream to a catalytic hydrogenation step to produce a partially hydrogenated hydrogen donor diluent product; (h) utilizing at least a part of the partially hydrogenated hydrogen donor diluent product as the solvent in step (a); and (i) recovering distilled product streams and a 1,000/sup 0/F+ product stream.

• Assignee: Conoco, Inc., Ponca City, OK
• Patent Number(s): US 4604185
• OSTI ID: 5374959
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
AROMATICS
BOILING POINTS
CATALYTIC CRACKING
CHEMICAL PREPARATION
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DISTILLATES
DISTILLATION
ENERGY SOURCES
FOSSIL FUELS
FRACTIONATION
FUELS
GAS OILS
HIGH TEMPERATURE
HYDROCRACKING
HYDROGEN TRANSFER
HYDROGENATION
ORGANIC COMPOUNDS
PETROLEUM
PETROLEUM DISTILLATES
PETROLEUM FRACTIONS
PETROLEUM PRODUCTS
PETROLEUM RESIDUES
PHYSICAL PROPERTIES
PYROLYSIS
SEPARATION PROCESSES
SOLVENTS
SYNTHESIS
THERMOCHEMICAL PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE