Fluidized catalytic cracking process utilizing a high temperature reactor

Patent · Tue Aug 10 04:00:00 EDT 1993

OSTI ID:6163403

Stine, L O; Hemler, C L; Cabrera, C A; Lomas, D A

A process is described for the fluid catalytic cracking of hydrocarbons, said process comprising: (a) passing regenerated catalyst particles into the upstream portion of a riser conversion zone and accelerating said catalyst particles by contact with a lift gas to a gas velocity of at least 1.2 meters per second; (b) injecting a hydrocarbon feed into said riser at a point downstream from the point of lift gas addition in an amount sufficient to maintain an average temperature of at least 550 C (1,025 F) in said riser and contacting said feed and catalyst in said riser for 0.2 to 5 seconds to convert at least a portion of said feed to a conversion stream comprising conversion products; (c) directing said conversion stream and catalyst out of said riser and directly into a cyclone separator without substantial cooling of said catalyst particles and substantially separating said conversion products from said catalyst particles; (d) passing catalyst particles having absorbed hydrocarbons from said separator into a catalyst stripping zone and maintaining a temperature in said stripping zone of at least 525 C (975 F); (e) returning hydrocarbons from said stripping zone to said cyclone separator; (f) transferring conversion products directly from said cyclone separator into contact with a quench medium and reducing the temperature of said conversion products to a temperature of less than 500 C (930 F); (g) separating the said conversion products and quench liquid to recover at least one FCC product stream; and (h) removing spent catalyst from said stripping zone for regeneration.

• Assignee: UOP, Des Plaines, IL (United States)
• Patent Number(s): A; US 5234578
• Application Number: PPN: US 7-766498
• OSTI ID: 6163403
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
CONCENTRATORS
CONTROL
CRACKING
CYCLONE SEPARATORS
DECOMPOSITION
ENERGY SOURCES
EQUIPMENT
FLOW RATE
FLUID FLOW
FOSSIL FUELS
FUELS
GAS FLOW
INERTIAL SEPARATORS
MANAGEMENT
MATERIALS RECOVERY
PETROLEUM
PETROLEUM PRODUCTS
POLLUTION CONTROL EQUIPMENT
PROCESSING
PYROLYSIS
QUENCHING
REGENERATION
SEPARATION EQUIPMENT
SYNTHESIS
TEMPERATURE CONTROL
THERMOCHEMICAL PROCESSES
WASTE MANAGEMENT
WASTE PROCESSING