Delayed coking process

Patent · Tue Jan 10 04:00:00 EST 1989

OSTI ID:6058876

Mallari, R M

In a process for delayed coking of heavy petroleum residue feedstock within a coker heater, a coke drum and a fractionator, wherein the feedstock and recycle material are heated in the heater and then passed to the coke drum to produce coke and overhead vapors, wherein the vapors are fed into a bottom primary section of the fractionator. A heavy gas oil product is fractionared and withdrawn from a secondary section of the fractionator, wherein a light gas oil and other lighter distillates products are fractionated and withdrawn from the succeeding sections of the fractionator, wherein a naptha and gaseous constituents are fractionated and withdrawn from the top section of the fractionator. A selected portion of the coke drum overhead vapors is condensed as heavy recycle in the primary section of the fractionator and combined with the preheated but unvaporized feedstock, wherein a selected quantity ratio of the heavy recycle and the feedstock is charged to the coker heater, wherein a flow rate of the combined heavy recycle and feedstock is adjusted to operate the choker heater at a selected inlet cold oil velocity.

• Assignee: NOV; NOV-89-053222; EDB-89-076070
• Patent Number(s): US 4797197
• OSTI ID: 6058876
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020800 -- Petroleum-- Waste Management
CARBONIZATION
CHEMICAL REACTIONS
CHEMICAL REACTORS
COKING
CRACKING
DECOMPOSITION
ENERGY SOURCES
FOSSIL FUELS
FUELS
HEATERS
HEATING
MANAGEMENT
PETROLEUM
PETROLEUM FRACTIONS
PETROLEUM RESIDUES
PROCESSING
PYROLYSIS
RECYCLING
THERMAL CRACKING
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING