Class 502/43 - Plural distinct serial combustion stages

Subclass of Class 502 - Catalyst, solid sorbent, or support therefor: product or process of making
Definition: Process including two or more sequential steps of energetic
No. of patents: 99
Last issue date: 09/20/2011

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Number	Title	Issue Date
8022002	Integrated regeneration of non-noble metal catalysts Regeneration flue gas streams containing unacceptable levels of CO can be effectively combusted (i.e., for more complete combustion or oxidation of CO to CO2) by contact with a second catalyst undergoing regeneration, for example in a second regenerator. ...	09/20/2011
7585803	Catalyst regeneration method A method of operating a continuous system for a catalyst regeneration process wherein the regeneration section includes a combustion zone, at least one oxygen boost zone, a halogenation zone and a drying zone in serial progression. ...	09/08/2009
7405174	Process for regeneration of a catalyst that contains an EUO-structural-type zeolite A process for regeneration of a catalyst that comprises at least one EUO-structural-type zeolite in acid form and at least one hydro-dehydrogenating metal, used in a process for isomerization of a hydrocarbon feedstock that comprises aromatic compounds with eight ca...	07/29/2008
7214636	Catalyst regenerator for reducing entrained catalyst loss The present invention is directed to a swaged catalyst regenerator and processes for using the catalyst regenerator. In one embodiment, the swaged catalyst regenerator includes a regeneration zone having a first major diameter and into which a regeneration medium an...	05/08/2007
7087546	Process for regenerating and rejuvenating additive-based catalysts The present invention pertains to a process for regenerating and rejuvenating an additive-based hydrotreating catalyst containing Group VIB and Group VIII hydrogenation metals. The process comprises the steps of regenerating the catalyst by contacting it with an oxy...	08/08/2006
7008595	Resid cracking apparatus with catalyst and adsorbent regenerators and a process thereof This invention provides a resid cracking apparatus comprising a riser, reactor, stripper cum separator with adjustable outlets in flow communication with adsorbent and catalyst regenerators for converting hydrocarbon residues containing higher concentration of conra...	03/07/2006
6780809	Catalyst for the (co)polymerization of ethylene and a method for the preparation thereof A particulate, modified chromium oxide catalyst for the polymerisation of ethylene or ethylene with α-olefins, comprising: a) a chromium-oxide catalyst, b) a transition metal compound, and c) a catalyst activator. A method for the preparation of the catalyst compri...	08/24/2004
6685681	Vacuum therapy and cleansing dressing for wounds A bandage for use with a vacuum source includes a wound dressing member to be placed in contact with a wound surface and a suction port associated with the wound dressing member. The member is configured with spacers contacting the wound surface to define...	02/03/2004
6579820	Reactor modifications for NOx reduction from a fluid catalytic cracking regeneration vessel A process for regenerating a spent catalyst having coke deposits thereon in a catalyst regeneration vessel having a dense phase and a dilute phase, wherein the process comprises the steps of: (a) contacting the spent catalyst with a primary oxygen-contain...	06/17/2003
6506702	Process and vessel for regeneration of a catalyst including monitoring and monitoring and control of combustion completion The invention concerns a process for regenerating a catalyst in a fixed bed, for example a catalyst for reforming or for aromatic compound production, including a step for monitoring and controlling combustion completion which is carried out after the cat...	01/14/2003
6133183	Process for regenerating a catalyst for the production of aromatic compounds or for reforming, with improved oxychlorination The invention concerns a process for regenerating a catalyst for the production of aromatic compounds, in particular for reforming, comprising combustion (A), oxychlorination (B) and calcining (C) steps, in which at least one chlorinating agent (conduit 1...	10/17/2000
6121180	Precombustion of halogen-containing compounds in catalyst regeneration processes A method for regenerating a hydrocarbon conversion catalyst wherein at least a portion of a halogen-containing compound is precombusted in a precombustion zone, and the catalyst is regenerated in the presence of the halogen. By precombusting the halogen-c...	09/19/2000
6103652	Staged combustion process and apparatus for regenerating a reforming or aromatic compound production catalyst in a moving bed The invention concerns a process for moving bed regeneration of a reforming or aromatic hydrocarbon production catalyst. The catalyst includes a support, at least one noble metal and at least one halogen. The process includes a combustion step in which th...	08/15/2000
6048814	Process and unit for regeneration of a catalyst for the production of aromatic compounds or for reforming The invention concerns a process and unit for regenerating a catalyst for the production of aromatic compounds, in particular for reforming, the catalyst being in a moving bed, comprising combustion, oxychlorination and calcining steps, in which at least ...	04/11/2000
5837637	Catalyst regeneration The present invention provides a process for continuously regenerating a catalyst or an adsorbent which comprises the steps of: (a) establishing an ebullating or expanded bed by passing a gaseous stream upwardly through a plurality of particles confined in a r...	11/17/1998
5547910	Method and system for controlling the activity of a crystalline zeolite cracking catalyst A method and system for cracking hydrocarbons and regeneration of the catalyst is described with particular emphasis directed to partially restoring the activity of the catalyst after an initial hydrocarbon conversion use by heat soaking the catalyst at a...	08/20/1996
5348921	Method for reducing sulfate formation during regeneration of hot-gas desulfurization sorbents The regeneration of sulfur sorbents having sulfate forming tendencies and used for desulfurizing hot product gas streams such as provided by coal gasification is provided by employing a two-stage regeneration method. Air containing a sub-stoichiometric qu...	09/20/1994
5346610	Multi-stage regeneration of catalyst in a bubbling bed catalyst regenerator A process and apparatus for regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator. Spent catalyst is regenerated in a fast fluidized bed coke combustor heated by direct contact heat exchange with c...	09/13/1994
5324696	Process and heat exchange apparatus for solid particles for double regeneration in catalytic cracking A catalyst, e.g., a cracking catalyst, and a part of the regeneration fumes are drawn off from the dense catalytic bed of a second regenerator (9) and are introduced by force of gravity into an external exchanger (21) at a junction point beneath the level...	06/28/1994
5275990	Process for regenerating a spent resid hydroprocessing catalyst using a group IIA metal A method is provided for regenerating a molecular sieve-free resid hydroprocessing catalyst for use with an ebullated bed reaction process comprising at least one hydrogenation metal and at least one Group IIA metal deposited on an inorganic oxide support...	01/04/1994
5268089	FCC of nitrogen containing hydrocarbons and catalyst regeneration Oxides of nitrogen (NOx) emissions from an FCC regenerator are reduced by forcing the regenerator to operate between full and partial CO burn mode. Operating with less than 1 mole % O2 and up to 1 or 2% CO in the flue gas creates conditions whi...	12/07/1993
5245093	Reaction processes in a multi-stage fluidized bed A process for reacting a fluid phase (gaseous and/or liquid phase) in contact with a solid phase in a reaction zone, wherein the improvement in said process comprises reacting the fluid phase in contact with the solid phase in a horizontally-oriented flui...	09/14/1993
5212129	Inverted backmix coolers for FCC units The provision and operation of backmix coolers is facilitated by a cooler arrangement that has the backmix portion of the cooler in an inverted position. In this position the heat exchange portion of the cooler is located above the source of hot catalyst....	05/18/1993
5202294	Low pressure drop regeneration of a catalyst A process and apparatus for the regeneration of spent FCC catalyst in a single vessel are disclosed. In one embodiment, catalyst is at least partially regenerated in a primary stage comprising a fast or turbulent fluidized bed. The flue gas is discharged ...	04/13/1993
5198397	Two-stage fluid bed regeneration of catalyst with shared dilute phase A process and apparatus for multi-stage fluidized bed regeneration of spent FCC catalyst in a single vessel. At least two isolated relatively dense phase fluidized beds are disposed beneath a common dilute phase region. Spent catalyst discharged into a pr...	03/30/1993
5183558	Heavy oil catalytic cracking process and apparatus A process and apparatus for fluidized catalytic cracking of heavy oils is disclosed using a modified high efficiency catalyst regenerator. A fast fluidized bed coke combustor, which is essentially free of gas/catalyst separation means, partially regenerat...	02/02/1993
5160426	Process and apparatus for indirect heating of catalyst stripper above a bubbling bed catalyst regenerator A process and apparatus for achieving hot catalyst stripping of spent FCC catalyst in a stripper mounted over a bubbling bed regenerator. Hot catalyst stripping is achieved by indirect transfer of heat from the regenerator to the stripper. Heat pipes, sur...	11/03/1992
5158919	Catalyst regeneration in a single stage regenerator converted to a two stage high efficiency regenerator A process and apparatus for fluidized bed catalyst regeneration. A mixture of spent catalyst, recycled hot regenerated catalyst and regeneration gas are charged to a riser having an outlet connective with a coke combustor immersed in a fluidized bed of ca...	10/27/1992
5143875	Bubbling dense bed catalyst regenerator with higher efficiency base region A process and apparatus for fluidized bed catalyst regeneration. The regenerator contains a base fluidized bed, a bubbling dense bed above the base fluidized bed, and a dilute phase region above the bubbling dense bed. The bubbling dense bed has a larger ...	09/01/1992
5143874	Catalyst regenetation in high efficiency regenerator heated by indirect heat exchange A process and apparatus for high efficiency regeneration of spent FCC catalyst in an existing, single dense bed FCC regenerator is disclosed. Spent catalyst is added to a coke combustor immersed within the existing regenerator vessel catalyst bed. A dilut...	09/01/1992
5139649	Process for multi-stage fast fluidized bed regeneration of catalyst A process and apparatus for achieving turbulent or fast fluidized bed regeneration of spent FCC catalyst in a bubbling bed regenerator having a stripper mounted over the regenerator and a stripped catalyst standpipe within the regenerator. A coke combusto...	08/18/1992
5130012	Process and apparatus for reducing NO_x emissions from high-efficiency FFC regenerators A fluidized catalytic cracking process using a high efficiency regenerator comprising a coke combustor, a dilute phase transport riser, and a second fluidized bed with catalyst recirculation to the coke combustor, is operated to reduce NOx emis...	07/14/1992
5126036	Process and apparatus for split feed of spent catalyst to high efficiency catalyst regenerator A process and apparatus for regeneration of coked catalyst used in the fluidized cracking of heavy oils is disclosed. A high efficiency catalyst regenerator, with a fast fluidized bed coke combustor, dilute phase transport riser, and second fluidized bed ...	06/30/1992
5120691	Process for regulating or checking the thermal level of a pulverulent solid incorporating a heat exchanger with fluidized bed compartments A process and apparatus for the heat regulation of fluidized or fluid catalyst beds are described, the apparatus having a fluid bed heat exchanger. According to the invention, a pulverulent solid is made to flow essentially from the base of an enclosure (...	06/09/1992
5110775	Two stage combustion process for cracking catalyst regeneration A two-stage process and apparatus for the regeneration of fluidized catalytic cracking (FCC) catalyst is disclosed. A primary regenerator, a single dense bed with a spent catalyst inlet, a source of oxygen-containing gas, a flue gas outlet and a regenerat...	05/05/1992
5108968	Process for treating a material wherein the material is suspended in a gaseous atmosphere A process for treating catalytic particles in a vertical chamber is disclosed. The catalytic particles comprise spent catalysts from such hydroprocesses as hydrocracking and hydroreforming. The process comprises suspending the catalytic particles in a gas...	04/28/1992
5106799	Fluidized bed combustion process A process and apparatus for fluidized bed combustion using a dense phase combustion zone over a dilute phase combustion zone. When used to regenerate FCC catalyst containing coke with relatively large amounts of NOx precursors, the catalyst is ...	04/21/1992
5077252	Process for control of multistage catalyst regeneration with partial CO combustion A process and apparatus for controlled, multi-stage regeneration of FCC catalyst is disclosed. A modified high efficiency catalyst regenerator, with a fast fluidized bed coke combustor, dilute phase transport riser, and second fluidized bed regenerates th...	12/31/1991
5077251	Control of multistage catalyst regeneration with both partial and full co combustion A process for controlled, multi-stage regeneration of FCC catalyst is disclosed. A modified high efficiency catalyst regenerator, with a fast fluidized bed coke combustor, dilute phase transport riser, and second fluidized bed regenerates the catalyst in ...	12/31/1991
5066627	Process for simultaneous heating and cooling a fast fluidized bed catalyst regenerator A process for simultaneously heating and cooling of spent FCC catalyst during regeneration in a high efficiency FCC regenerator, one using a fast fluidized bed coke combustor. The coke combustor burns coke from spent catalyst in a turbulent or fast fluidi...	11/19/1991

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Class 502/43 - Plural distinct serial combustion stages