Delayed coking process

Patent · Tue Apr 28 04:00:00 EDT 1987

OSTI ID:6502857

Dabkowski, M J; Malladi, M

This patent describes a delayed cooking process in which a heavy oil coker feedstock is heated to an elevated coking temperature in a furnace and the heated feedstock is subsequently subjected to delayed coking in a coker drum under superatmospheric pressure and the vaporous coking products are removed from the drum and passed to a coker fractionator from which a bottoms fraction is removed. The improvement comprises coking a feed without the addition of the bottoms fraction from the fractionator and adding to the feed to the coker drum a lower boiling hydrocarbon diluent having an end boiling point of not more than 450/sup 0/C, the lower boiling hydrocarbon diluent being added to the heated feedstock after the feedstock has passed through the furnace.

• Assignee: Mobil Oil Corp., New York, NY
• Patent Number(s): US 4661241
• OSTI ID: 6502857
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020500* -- Petroleum-- Products & By-Products
BOILING POINTS
CARBONIZATION
CHEMICAL REACTIONS
CHEMICAL REACTORS
COKE
COKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FRACTIONATION
FUELS
FURNACES
HEATING
HIGH TEMPERATURE
PETROLEUM
PETROLEUM PRODUCTS
PHYSICAL PROPERTIES
PRODUCTION
SEPARATION EQUIPMENT
SEPARATION PROCESSES
THERMODYNAMIC PROPERTIES
TRANSITION TEMPERATURE
VISCOSITY