Process for controlling oxidation of nitrogen and metals in circulating fluidized solids contacting process

a fluidized solids and oxidation control technology, applied in the direction of catalytic naphtha reforming, catalytic cracking, naphtha reforming, etc., can solve the problems of increasing the environmental pollution of the regenerator flue gas, reducing catalyst selectivity, and reducing the concentration of refining "catalyst poisons, etc., to reduce the atmosphere and minimize the deactivation of catalysts from vanadium and sodium.
US20030075480A1Inactive Publication Date: 2003-04-24BAR PROCESSES JOINT VENTURE
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
BAR PROCESSES JOINT VENTURE
Publication Date
2003-04-24
Estimated Expiration
Not applicable · inactive patent

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Abstract

A fluidized particulate solids contacting process for reducing regenerator flue gas NOx emissions and / or permitting operating with an increased equilibrium solids vanadium level, which process may be an FCC process or a fluidized particulate solid hydrocarbon treating process, wherein spent FCC catalyst or other spent solid is in a regenerator with an oxygen-containing regeneration gas under catalyst (solid) regeneration conditions which include a combination of at least a regeneration temperature and an oxygen level in the regeneration gas which is effective to burn off the spent solid a majority of carbonaceous deposits thereon, while substantially preventing the formation of NOx, and thereby produce a regenerated solid having a carbon level reduced from that of the spent solid and a flue gas; maintaining the regenerated solid in a fluidized state with a fluidizing media that substantially prevents any further oxidation or regeneration; and returning the fluidized regenerated solid to the reactor (contactor) used in the process.
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Description

[0001] This application is a Continuation-In-Part of application Ser. No. 09 / 983,379, filed Oct. 24, 2001.DESCRIPTION OF THE INVENTION

[0002] Field of the Invention

[0003] This invention relates to an improved circulating fluid particulate solids contacting process for upgrading hydrocarbon feedstocks containing metals, such as vanadium, and / or nitrogen, in which certain regenerator design and operating conditions are employed to (1) reduce the nitrogen oxides (NOx) emissions in regenerator flue gas and / or (2) permit operating with an increased equilibrium solids vanadium level over and above the current state of the art. This invention also relates to an improved fluid catalytic cracking (FCC) process for processing gas oils and residual oils, in which certain FCC unit (FCCU) catalyst regenerator design and operating conditions are employed to reduce the nitrogen oxides (NOx) emissions in the catalyst regenerator flue gas and / or permit operating with an increased equilibrium catalyst...

Claims

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