Process and apparatus for split feed of spent catalyst to high efficiency catalyst regenerator

Patent · Tue Jun 30 04:00:00 EDT 1992

OSTI ID:7017009

Owen, H

This patent describes a fluidized catalytic cracking process for catalytic cracking of a heavy hydrocarbon feed. It comprises hydrocarbons having a boiling point above about 650{degrees} F to lighter products by contact of the heavy feed with a source of hot, regenerated catalytic cracking catalyst and wherein the spent catalyst is stripped, and the stripped, spent catalyst is regenerated by contact with oxygen or an oxygen containing gas at catalyst regeneration conditions in a high efficiency regenerator comprising a coke combustor having a dense bed of catalyst, a dilute phase transport riser mounted above the coke combustor, and a second fluidized bed of regenerated catalyst, and wherein the stripped catalyst is split into a first and second stream, the first stream is charged to the coke combustor and the second stream is charged to the coke combustor and the second stream is charged directly to the second fluidized bed without passage through the coke combustor or dilute phase transport riser.

• Assignee: Mobil Oil Corp., Fairfax, VA (United States)
• Patent Number(s): US 5126036; A
• Application Number: PPN: US 7-788060
• OSTI ID: 7017009
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400800* -- Combustion
Pyrolysis
& High-Temperature Chemistry
42 ENGINEERING
421000 -- Engineering-- Combustion Systems
CATALYSTS
CATALYTIC CRACKING
CHEMICAL REACTIONS
COKE
COMBUSTORS
CRACKING
DECOMPOSITION
EFFICIENCY
ELEMENTS
FLUIDIZATION
FLUIDS
GASES
HYDROCARBONS
NONMETALS
ORGANIC COMPOUNDS
OXYGEN
PYROLYSIS
REGENERATORS
THERMOCHEMICAL PROCESSES