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| Number | Title | Issue Date |
| 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 |
| 7304011 | Compositions and processes for reducing NOemissions during fluid catalytic cracking Compositions for reduction of NOx generated during a catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise a fluid catalytic cracking catalyst composition, preferably containing a Y-type zeoli... | 12/04/2007 |
| 7256149 | Catalyst regeneration process Used noble metal-containing titanium zeolite catalysts, that have been employed in the liquid-phase epoxidation of olefins with hydrogen and oxygen in the presence of a buffer, are regenerated by heating the used catalyst at a temperature of at least 250° C. in the... | 08/14/2007 |
| 7115742 | Process for the preparation of triethylenediamine (TEDA) from ethylenediamine A process for the preparation of triethylenediamine (TEDA) by reaction of ethylenediamine (EDA) in the presence of a zeolite catalyst, wherein the zeolite catalyst contains one or more metals M in oxidation states II, III or IV as oxides. The desired molar ratio of ... | 10/03/2006 |
| 7018948 | Activation and regeneration of a hydro-oxidation catalyst A process of activating a fresh catalyst or regenerating a deactivated catalyst which is used in a hydro-oxidation process, preferably, the hydro-oxidation of an olefin in the presence of oxygen and hydrogen to an olefin oxide. The hydro-oxidation catalyst preferabl... | 03/28/2006 |
| 6958304 | Method for regenerating a zeolite catalyst A process for the regeneration of a zeolite catalyst which comprises treating the catalyst thermally in the presence of a gas stream at temperatures above 120° C., the weight-based residence time of the gas stream over the catalyst during the thermal treatment bein... | 10/25/2005 |
| 6916417 | Catalytic cracking of a residuum feedstock to produce lower molecular weight gaseous products The present invention provides a catalytic cracking process. The process includes introducing at least one species of a natural or synthetic residuum containing feedstock and a catalyst into a catalytic cracker reaction zone, and thereafter cracking the feedstock in... | 07/12/2005 |
| 6913687 | Method of producing synthesis gas from a regeneration of spent cracking catalyst The present invention provides a method of producing a synthesis gas from a regeneration of a spent cracking catalyst. The method includes introducing a spent cracking catalyst into a first regeneration zone in a presence of a first atmosphere comprising a first oxy... | 07/05/2005 |
| 6710002 | Method for regenerating a zeolitic catalyst A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at fro... | 03/23/2004 |
| 6585884 | Method of producing synthesis gas from a regeneration of spent cracking catalyst The present invention provides a method of producing a synthesis gas from a regeneration of spent cracking catalyst. The method includes introducing a spent cracking catalyst into a first regeneration zone in a presence of a first oxygen and carbon dioxid... | 07/01/2003 |
| 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 |
| 6558531 | Method for maintaining heat balance in a fluidized bed catalytic cracking unit The invention relates to a process for maintaining heat balance in a fluidized bed catalytic cracking unit. More specifically, the invention relates to a combustion control method capable of maintaining or restoring heat balance by conducting, under appro... | 05/06/2003 |
| 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 |
| 6491810 | Method of producing synthesis gas from a regeneration of spent cracking catalyst The present invention provides a method of producing a synthesis gas from a regeneration of spent cracking catalyst. The method includes introducing a spent cracking catalyst into a first regeneration zone in a presence of a first oxygen and carbon dioxid... | 12/10/2002 |
| 6472340 | Catalytic reforming catalyst activation Catalyst activation of a platinum reforming catalyst system contained in a multiple reactor system by simultaneously reducing the catalyst with hydrogen while introducing a nonmetallic chlorine-containing compound into a reactor of the multiple reactor sy... | 10/29/2002 |
| 6464896 | Low migratory photoinitiators for oxygen-scavenging compositions An improved composition and a method of scavenging oxygen using said composition which comprise oxidizable organic compounds, transition metal catalysts in combination with certain photoinitiators is disclosed. The method comprises initiating scavenging b... | 10/15/2002 |
| 6383965 | Method of regenerating a molecular sieve catalyst A process for regenerating spent molecular sieve catalysts from a fluidized catalytic cracking unit in an oil refinery with high temperature flue gas from a second group of cyclones with the spent catalyst in a first riser regenerator to form a mixture of... | 05/07/2002 |
| 6380119 | Method for regenerating a zeolitic catalyst A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at from 2... | 04/30/2002 |
| 6254802 | Low migratory photoinitiators for oxygen-scavenging compositions An improved composition and a method of scavenging oxygen using the composition which comprise oxidizable organic compounds, transition metal catalysts in combination with certain photoinitiators is disclosed. The method comprises initiating scavenging by... | 07/03/2001 |
| 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 |
| 6114265 | Combustion control in a fluid catalytic cracking regenerator Disclosed is a process for controlling combustion in a fluid catalytic cracking regenerator. More specifically, afterburning which occurs during the combustion process is controlled by adjusting oxygen concentration in at least one of two combustion strea... | 09/05/2000 |
| 6110857 | Method of minimizing iron contamination during catalyst regeneration processes The present invention is directed toward improved processes for the regeneration of noble metal-containing catalysts wherein iron contamination of the catalyst during regeneration is significantly diminished. It has been found that maintenance of any iron... | 08/29/2000 |
| 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 |
| 6083862 | Cyclic process for oxidation of calcium sulfide Calcium sulfide particles in mixtures with carbon particles, as in coal gasifier waste, are converted to calcium oxide by repeated cycles of oxidation and reduction by utilizing the carbon as a source of the reducing gas required for the treatment. The tr... | 07/04/2000 |
| 6034019 | Method of minimizing iron contamination during catalyst regeneration processes The present invention is directed toward improved processes for the regeneration of noble metal-containing catalysts wherein iron contamination of the catalyst during regeneration is significantly diminished. It has been found that maintenance of any iron... | 03/07/2000 |
| 5716514 | FCC NOx reduction by turbulent/laminar thermal conversion Oxides of nitrogen (NOx) emissions from an FCC regenerator are reduced by operating the regenerator in partial CO burn mode and controlled turbulent/laminar flow processing of the flue gas. Partial CO burn FCC catalyst regeneration produces flu... | 02/10/1998 |
| 5648020 | Oxygen scavenging composition for low temperature use Improved compositions for scavenging oxygen are disclosed. These materials, characterized by low degree crystallinity and a glass transition temperature of lower than -15° C., have high oxygen scavenging rates at low temperatures. The composition compris... | 07/15/1997 |
| 5376607 | Method for controlling moisture by coke composition A semi-continuous process for combusting coke from catalyst particles in a fixed bed is improved by rejecting from the combustion process a high moisture content flue gas stream which is produced by the combustion of a relatively large proportion of the h... | 12/27/1994 |
| 5315056 | Catalyst regeneration in a dehydrogenation process In a dehydrogenation process wherein catalyst is regenerated off-stream by use of heated air, at least two reactors are in the regeneration cycle, with regeneration air being heated to regeneration catalyst temperature for introduction into the first reac... | 05/24/1994 |
| 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 |
| 5232885 | Process for regenerating a spent resin hydroprocessing catalyst using a group IV metal A method of regenerating a contaminant metal-containing, coke deactivated, molecular sieve-free catalyst having at least one hydrogenation metal and at least one Group IV metal deposited on an inorganic oxide support comprising contacting the catalyst wit... | 08/03/1993 |
| 5180700 | Regeneration and extension of lifetime of dehydrogenation catalysts used in the preparation of 2-alkylpyrimidines The useful life of the palladium dehydrogenation catalyst used in the preparation of 2-alkylpyrimidines from 1,3-diaminopropane and an appropriate alkanecarboxylic acid in a continuous vapor phase process is substantially increased by employing a stoichio... | 01/19/1993 |
| 5124292 | Process for the regeneration of activated carbon product by reverse burn gasification Process for the regeneration of an activated carbon or activated coke product comprising loading the activated product into a reaction vessel having two ends, initiating a flame front at one end of the vessel, introducing an oxidant to the other end of th... | 06/23/1992 |
| 5087596 | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst The present invention relates to a spent hydroprocessing catalyst regeneration process wherein the catalyst is subjected to an initial partial decoking step, followed by impregnation with a Group VIB metal-containing component, and then subjected to a fin... | 02/11/1992 |
| 5075268 | Regeneration method for methanol-reforming catalyst Disclosed herein is a method for the regeneration of a methanol-reforming talyst reduced in activity due to its use in a reaction in which methanol is modified, in the presence of water if necessary, to produce a hydrogen-containing gas. The catalyst cont... | 12/24/1991 |
| 5073529 | Method of regenerating a nonacidic zeolite catalyst A deactivated catalyst comprising a nonacidic zeolite and a Group VIII metal is regenerated by a two-step carbon burn process. The first oxidation step contacts the nonacidic zeolite catalyst with a halogen-free gaseous stream comprising oxygen and an ine... | 12/17/1991 |
| 5071538 | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst The present invention relates to a spent hydroprocessing catalyst regeneration process wherein the catalyst is subjected to an initial partial decoking step, followed by the addition of at least one rare earth metal, and then subjected to a final decoking... | 12/10/1991 |
| 5004717 | Process for in-situ regeneration of aged methanol catalysts A process is provided for regenerating aged copper-containing coprecipitated methanol synthesis catalyst. The process includes treating the aged catalyst in an oxidizing atmosphere according to a specified time-temperature ramp, then in a reducing atmosph... | 04/02/1991 |
| 5002915 | Process for catalyst regeneration with flue gas A process for regenerating solid particulate catalyst used in fixed bed hydrocarbon conversion processes, such as the shape selective zeolite conversion of olefins to gasoline and diesel fuel. Regeneration is achieved using a portion of a flue gas stream ... | 03/26/1991 |
| 4997799 | Process for regenerating spent heavy hydrocarbon hydroprocessing catalyst The present invention relates to a spent hydroprocessing catalyst regeneration process wherein the catalyst is subjected to an initial partial decoking step, followed by the addition of at least one rare earth metal, and then subjected to a final decoking... | 03/05/1991 |
