Catalytic cracking process with isolated catalyst for conversion of NOx in FCC regenerator

Patent · Tue Aug 06 04:00:00 EDT 1991

OSTI ID:5676843

Chin, A A; Child, J E; Schipper, P H

This patent describes improvement in a process for the catalytic cracking of a nitrogen-containing hydrocarbon feed to lighter products by contacting the feed with a supply of hot, regenerated cracking catalyst in a fluidized catalytic cracking (FCC) reactor means to produce cracked products and spent cracking catalyst containing nitrogen compounds, wherein the spent cracking catalyst is regenerated in a catalyst regeneration means by contact with oxygen or an oxygen-containing gas at catalyst regeneration conditions to produce hot regenerated cracking catalyst and regenerator flue gas containing nitrogen oxides (NO{sub x}). The improvement comprises: reducing the amount of NO{sub x} in the flue gas by adding to the catalyst regeneration means a catalytically effective amount of a DeNO{sub x} catalyst in an amount sufficient to reduce the NO{sub x} content of the flue gas and in a form whereby the DeNO{sub x} catalyst has an extended residence time in the regenerator relative to the cracking catalyst.

• Assignee: Mobil Oil Corp., Fairfax, VA (USA)
• Patent Number(s): US 5037538; A
• Application Number: PPN: US 7-484989
• OSTI ID: 5676843
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020400* -- Petroleum-- Processing
020800 -- Petroleum-- Waste Management
54 ENVIRONMENTAL SCIENCES
540120 -- Environment
Atmospheric-- Chemicals Monitoring & Transport-- (1990-)
CATALYTIC CRACKING
CHEMICAL PLANTS
CHEMICAL REACTIONS
CRACKING
DECOMPOSITION
DENITRIFICATION
FLUE GAS
GASEOUS WASTES
INDUSTRIAL PLANTS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
PETROCHEMICAL PLANTS
PYROLYSIS
THERMOCHEMICAL PROCESSES
WASTES