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| Number | Title | Issue Date |
| 7951741 | Mixed metal catalyst comprising a combustible binder, its process of preparation and use The present invention pertains to a catalyst composition comprising at least one non-noble Group VIII metal component, at least two Group VIB metal components, and at least about 1 wt. % of a combustible binder material selected from combustible binders and precurso... | 05/31/2011 |
| 7348444 | Process for the production of an olefin oxide A process for the production of an olefin oxide, which process comprises reacting a feed comprising an olefin and oxygen in the presence of a silver-containing catalyst, wherein before the catalyst has reached an advanced stage of ageing the reaction temperature is ... | 03/25/2008 |
| 7256318 | Regeneration temperature control in a catalytic reaction system This invention is directed to controlling regenerator temperature in an oxygenate to olefin process. Because a significant amount of heat can produced in the regenerator during the regeneration process, at least a portion of the heat must be removed to keep the syst... | 08/14/2007 |
| 7199069 | Method for destruction of organic compounds by co-oxidation with activated carbon A method for oxidizing carbon adsorbable organic compounds in a controlled manner within a bed of activated carbon. The bed of activated carbon is exposed to a source of molecular oxygen, such as air, and is controlled within a temperature range whereby the molecula... | 04/03/2007 |
| 7083829 | Vehicle having atmosphere pollutant treating surface A method and apparatus for treating the atmosphere comprising moving a vehicle through the atmosphere, the vehicle having at least one atmosphere contacting surface and a pollutant treating composition located on said surface. A specific embodiment comprises coating... | 08/01/2006 |
| 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 |
| 6982068 | Method for destruction of organic compounds by co-oxidation with activated carbon A method for oxidizing carbon adsorbable organic compounds in a controlled manner within a bed of activated carbon. The bed of activated carbon is exposed to a source of molecular oxygen, such as air, and is controlled within a temperature range whereby the molecula... | 01/03/2006 |
| 6602476 | Apparatus and process for heat exchange with fluid beds Apparatus and process for heat exchange with fluid beds comprises heat-exchange tubes located longitudinally with respect to the axis of a fluidization zone with a rectangular pitch, one side of which having a length at least one and a half times the leng... | 08/05/2003 |
| 6486087 | Method for periodically reactivating a copper-containing catalyst material A method for periodically reactivating copper-containing catalyst material includes applying an oxygen-containing gas stream to the catalyst material for reactivation purposes. When the reactor is in the warm operating state, the application of the oxygen... | 11/26/2002 |
| 6403515 | Process for treating a catalyst or an adsorbent in a fluidized bed The invention concerns a process for fluidising a catalyst or an adsorbent in a furnace which is fixed but the fluidised bed advances, optionally with rotation, in the presence of another inert solid with a granulometry which is different from that of the... | 06/11/2002 |
| 6245703 | Efficient method using liquid water to regenerate oxygenate to olefin catalysts while increasing catalyst specificity to light olefins The present invention provides a method for maintaining temperature during regeneration of an oxygenate to olefins catalyst using liquid water as a coolant in an amount sufficient either to reduce duty of a catalyst cooler or to avoid the need to use a ca... | 06/12/2001 |
| 6169050 | Process for regeneration of catalysts of titanium silicalite type The invention relates to a process for the regeneration of a catalyst of titanium silicalite type, used in particular in reactions for the oxidation of saturated hydrocarbons or for the epoxidation of olefins, by heat treatment under a gas stream.... | 01/02/2001 |
| 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 |
| 5905161 | Regeneration of catalyst used in the preparation of 3,4-epoxy-1-butene Process for regenerating a silver catalyst deactivated by coking during the gas phase epoxidation of 1,3-butadiene by reacting the coked catalyst with a gas mixture containing at least 5% by volume of water vapor and up to 95% by volume of oxygen at tempe... | 05/18/1999 |
| 5880050 | Process for the regeneration of catalyst containing sulphur A process for the regeneration of a sulfur containing catalysts, wherein the catalyst is stripped of sulfur before the oxychlorination treatment of the regeneration process, typically before the catalyst is sent to the regeneration zone. The process is pa... | 03/09/1999 |
| 5521134 | Method for regenerating vanadium/phosphorus oxidation catalysts A method of regenerating V/P/O oxidation catalyst used for the partial oxidation of n-butane which comprises terminating the n-butane feed and contacting the catalyst with an oxygen containing gas, such as air for a sufficient period of time to regenerate... | 05/28/1996 |
| 5480853 | Phosphorus/vanadium catalyst preparation A vanadium/phosphorus mixed oxide catalyst containing not more than 0.2 wt % chloride is produced by drying chloride containing catalyst precursor at 100°-180° C., calcining the dried precursor, preferably under nitrogen, at 200°-300° C. and activatin... | 01/02/1996 |
| 5446000 | Treatment for virgin phosphorous/vanadium oxidation catalysts A method of removing chloride from phosphorus/vanadium/oxygen mixed oxide oxidation catalysts comprising treating a chloride containing catalyst comprising phosphorus, vanadium and oxygen with a stream of gas comprising oxygen, steam and an inert gas at f... | 08/29/1995 |
| 5378250 | Process for production of an ether-rich additive A process for the production of an ether-rich additive for gasoline, and more particularly, the production of MTBE, TAME and mixtures thereof from light hydrocarbon streams comprising passing the light hydrocarbon stream, preferably from an FCC feedstock,... | 01/03/1995 |
| 5348927 | Treatment for virgin phosphorous/vanadium oxidation catalysts A method of removing chloride from phosphorus/vanadium/oxygen mixed oxide oxidation catalysts comprising treating a chloride containing catalyst comprising phosphorus, vanadium and oxygen with a stream of gas comprising oxygen, steam and an inert gas at f... | 09/20/1994 |
| 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 |
| 5306682 | Process for the regeneration of coke-deposited, crystalline silicate catalyst A crystalline silicate catalyst having deposited coke thereon is regenerated by being contacted with an oxygen-containing gas having a moisture content of 0.2% by volume or less at a temperature of 400°-600° C.... | 04/26/1994 |
| 5276241 | Dimerization and/or dehydrogenation of alkanes Barium peroxide oxidizer, together with a transition metal from Group I, III, IV, V, VII or VIII or compound thereof is used as stoichiometric reagent in the oxidative dimerization of hydrocarbons having three or four carbon atoms. Barium peroxide oxidize... | 01/04/1994 |
| 5235121 | Method for reforming hydrocarbons The present invention provides a method and apparatus for reforming a hydrocarbon feedstock in the presence of steam using a steam-active reforming catalyst The present invention can generally be used in conjunction with any steam-active reforming process... | 08/10/1993 |
| 5227565 | Dimerization and/or dehydrogenation of alkanes Barium peroxide oxidizer, together with a transition metal from Group I, III, IV, V, VII or VIII or compound thereof is used as stoichiometric reagent in the oxidative dimerization of hydrocarbons having three or four carbon atoms. Barium peroxide oxidize... | 07/13/1993 |
| 5162274 | Regeneration of whetlerite for adsorbing toxic pollutants from air Whetlerite degraded by exposure to atmospheric contaminants is treated to restore its ability to adsorb toxic air pollutants by passing through it a flow of an oxygen-containing gas further containing from 500 to 2000 ppm of carbon monoxide and water vapo... | 11/10/1992 |
| 5015611 | Water regeneration of deactivated catalyst A catalyst useful for promoting the conversion of organonitrogen and organosulfur compounds in a hydrocarbon-containing feedstock is regenerated in a method wherein a deactivated catalyst is contacted with a controlled amount of water prior to combustion ... | 05/14/1991 |
| 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 |
| 4900713 | Stabilizing spent hydrotreating catalyst for reprocessing or storage A method of stabilizing pyrophoric hydrotreating catalyst drums has been discovered. The dry catalyst is introduced into drums which have been purged with an inert gas such as nitrogen or carbon dioxide. A continuous layer of gelatinized starch is applied... | 02/13/1990 |
| 4871700 | Reactivating Mo-Bi-Fe catalyst used in production of unsaturated aldehydes A method of reactivating a catalyst having reduced activity as a result of having been used in producing an unsaturated aldehyde as a main product by catalytic vapor-phase oxidation reaction of propylene, isobutylene or tertiary butanol, said catalyst bei... | 10/03/1989 |
| 4751210 | Regeneration of an iron based natural catalyst used in the hydroconversion of heavy crudes and residues A process for regenerating a spent, naturally occurring catalyst characterized by an iron content of about 10 to 70 wt. % as metal comprises contacting the spent catalyst with a mixture of water vapor and air in a water vapor/air ratio of between 1:1 to 2... | 06/14/1988 |
| 4714689 | Process for the regeneration of catalysts for the gas-phase reduction of aromatic nitro compounds Catalysts for the gas-phase reduction of aromatic nitro compounds to aromatic amines are regenerated by treatment of the catalyst, at elevated temperature, with a gas mixture which contains oxygen, inorganic and/or organic amines and/or nitrogen oxides an... | 12/22/1987 |
| 4649205 | Process for the manufacture of maleic anhydride utilizing catalysts reactivated with alkyl esters of orthophosphoric acid in the presence of water A process for the reactivation of a vanadium-phosphorus-oxygen catalyst promoted by metals selected from the group consisting of zinc, molybdenum, niobium, tungsten, uranium, cobalt and tin with alkyl esters of phosphoric acid and water is disclosed. The ... | 03/10/1987 |
| 4600700 | Regeneration of platinum-containing zeolite catalysts which includes oxidation of coke in the presence of water A process is described for regenerating a coke-deactivated platinum-containing zeolite catalyst material, which includes oxidizing the deactivated catalyst material in the presence of water under conditions which do not cause significant agglomeration of ... | 07/15/1986 |
| 4581339 | Catalytic dehydrogenation reactor cycle A method for reheating of a catalytic reactor by successive oxidations and reductions of a multiple oxidation state catalyst. Heat is added to the catalyst bed by a series of successive oxidation and reduction reactions occurring on the catalyst. Both catalyst... | 04/08/1986 |
| 4501820 | Method for the recovery of a tungsten-containing catalyst from coke containing nickel and vanadium A tungsten-containing catalyst associated with coke containing vanadium and nickel is recovered by a method which includes steam gasification, low temperature burning to remove at least a portion of the coke and selective extraction of the nickel and vana... | 02/26/1985 |
| 4480144 | Regeneration of aromatics processing catalysts Regeneration of an aromatics processing catalyst is effected in the absence of a gas cooler and a gas-liquid separator with a continuous loop flow of an oxidizing gas stream by removing a portion of said continuous closed loop flow and introducing therein... | 10/30/1984 |
| 4463209 | Aromatics processing Improved aromatic conversion processes are provided by novel regeneration techniques. Aromatic processes that would benefit from this invention include those processes using catalysts comprising zeolites having a silica to alumina mole ratio of at least a... | 07/31/1984 |
| 4442078 | Method of removing hydrogen sulfide from gases utilizing a zinc oxide sorbent and regenerating the sorbent A spent solid sorbent resulting from the removal of hydrogen sulfide from a fuel gas flow is regenerated with a steam-air mixture. The mixture of steam and air may also include additional nitrogen or carbon dioxide. The gas mixture contacts the spent sorb... | 04/10/1984 |
| 4409400 | Process for the preparation of cyclohexane-1,3-dione from δ-ketohexanoic acid ester Cyclohexane-1,3-diones are prepared by passing δ-ketocarboxylic acid esters in the gaseous phase over a temperature of from 250° C. to 500° C. at a catalyst. The catalyst contains at least one element of groups III B or IV B of the Periodic System in t... | 10/11/1983 |
