Process and apparatus for reducing NO sub x emissions from high-efficiency FCC regenerators

Patent · Tue Jul 14 00:00:00 EDT 1992

OSTI ID:6984530

Edwards, M S; Land, D A; Markham, C L; Misiewicz, J R; Schields, J P

This patent describes a fluidized catalytic cracking process wherein a nitrogen containing hydrocarbon feed contacts a source of hot regenerated catalyst in a catalytic cracking reactor means to produce catalytically cracked products and spent catalyst containing coke contaminated with nitrogen compounds. This patent describes a improvement in least periodically monitoring the NO{sub x} content of the flue gas, and adjusting the amount of regenerated catalyst recycle from the second fluidized bed to the coke combustor relative to the amount of spent stripped catalyst added to the coke combustor in response to the direct measurement of NO{sub x} content of the flue gas.

• Assignee: Mobil Oil Corp., Fairfax, VA (United States)
• Patent Number(s): A; US 5130012
• Application Number: PPN: US 7-645168
• OSTI ID: 6984530
• Country of Publication: United States
• Language: English

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Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
AIR POLLUTION CONTROL
CATALYSTS
CATALYTIC CRACKING
CHALCOGENIDES
CHEMICAL REACTIONS
COKE
COKING PLANTS
COMBUSTORS
CONTROL
CRACKING
DECOMPOSITION
FLUIDIZED BEDS
FLUIDIZED-BED COMBUSTORS
HYDROCARBONS
INDUSTRIAL PLANTS
NITROGEN COMPOUNDS
NITROGEN OXIDES
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
POLLUTION CONTROL
PYROLYSIS
THERMOCHEMICAL PROCESSES