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| Number | Title | Issue Date |
| 7829492 | Microwave assisted desulfurization of nitrogen oxide storage reduction catalysts A process for removing sulfur and sulfur compounds from a catalyst includes the following steps: exposing the catalyst to a reducing atmosphere and exposing the catalyst to microwave energy. Desorption of the sulfur and sulfur compounds from the catalyst occurs at a... | 11/09/2010 |
| 7638452 | Method for the reactivation of thermally aged nitrogen oxide storage catalytic converters Nitrogen oxide storage catalysts are used for removing the nitrogen oxides present in the lean-burn exhaust gas of lean-burn engines. Here, the purifying action is based on the nitrogen oxides being stored in the form of nitrates by the storage material of the stora... | 12/29/2009 |
| 7517824 | Process for steam stripping hydrocarbons from a bromine index reduction catalyst The present invention relates to a process for stripping hydrocarbons from a catalyst, comprising the step of contacting the catalyst with steam at stripping conditions, wherein the catalyst comprises a molecular sieve having a structure type of MWW, the steam compr... | 04/14/2009 |
| 7442846 | Process for the regeneration of catalysts for steam cracking Process for the regeneration of exhausted catalysts, containing one or more calcium aluminates, for steam cracking reactions, comprising treating said exhausted catalysts in a stream of water vapour at a temperature ranging from 700 to 950° C., preferably from 720 ... | 10/28/2008 |
| 7311891 | Process for the recovery of sulfur from Claus tail gas streams Recovering sulfur from a gas stream containing hydrogen sulfide by oxidizing the gas stream to convert the hydrogen sulfide in the gas stream to sulfur oxide, and thus form a sulfur oxide enriched gas stream. The sulfur oxide enriched gas stream is contacted with a ... | 12/25/2007 |
| 7157167 | Thermocatalytic process for CO-free production of hydrogen and carbon from hydrocarbons A novel process and apparatus are disclosed for sustainable CO2-free production of hydrogen and carbon by thermocatalytic decomposition (dissociation, pyrolysis, cracking) of hydrocarbon fuels over carbon-based catalysts in the absence of air and/or water... | 01/02/2007 |
| 7090787 | Drying getters A zeolite and an organic binder are mixed with a solvent to form a paste (302). The paste is then cast or molded (304) into the desired shape. A portion of the solvent is allowed to evaporate from the paste, hardening the getter (306). Getters a... | 08/15/2006 |
| 6992038 | Zinc chloride-loaded support and method for producing the same The present invention is to solve the problems caused by a conventional method for producing a zinc chloride-loaded support wherein zinc chloride is adsorbed on a solid support in an aqueous solution of zinc chloride. The problems include environmental destruction c... | 01/31/2006 |
| 6960548 | Method for regenerating used absorbents derived from treatment of thermal generator fumes Process and device for regeneration of a used absorbent from a desulfurization zone or from the desulfurization of a gas containing sulfur oxides, comprising regeneration simultaneously with filtering of the absorbent, in a reducing atmosphere, wherein partial combu... | 11/01/2005 |
| 6946419 | Process for the regeneration of a catalyst plant and apparatus for performing the process A gas stream containing e.g. molecular hydrogen is used for the regeneration of a catalyst for NOx and SO2 removal from the flue gas of a gas turbine. In order to reduce the consumption of regeneration gas, the gas inlet is located between the SCOSOx catalyst (2 | 09/20/2005 |
| 6939823 | Stripper and a stripping process for removing the flue gas carried by regenerated catalyst A stripper and a stripping process for removing the flue gas carried by regenerated catalyst. A cylindrical stripper mainly comprises a degassing pipe at the longitudinal axis, a horizontal pipe connected with the lower end of the degassing pipe, several sets of inn... | 09/06/2005 |
| 6921604 | DEVICE AND METHOD FOR EVALUATING PERFORMANCE OF FUEL CELLS, DEVICE AND METHOD FOR EVALUATING SPECIFIC SURFACE AREA OF FUEL-CELL ELECTRODE CATALYSTS, FUEL-CELL ELECTRODE CATALYST, AND METHOD OF MANUFACTURING THE SAME A device and a method for simply and accurately evaluating-performance of fuel cells have been provided. Hydrogen gas and carbon monoxide gas are caused to flow into a sample holder where an electrode catalyst sample is laid, and the amount of carbon monoxide gas di... | 07/26/2005 |
| 6919066 | Preparation of catalysts having low volume shrinkage Catalysts containing passivated copper and zinc oxide and/or alumina are prepared by (1) precipitating a mixture of catalyst precursor components dissolved or suspended in a diluent with anion-containing precipitating agents, washing and drying to form ... | 07/19/2005 |
| 6800579 | Catalyst regeneration There is provided a process for regenerating the activity of used metal catalysts for the hydrogenation of carbon monoxide comprising decreasing the hydrocarbon content thereof, calcining under an oxidant-containing atmosphere, impregnating with a solution of at lea... | 10/05/2004 |
| 6776607 | Process for minimizing afterburn in a FCC regenerator The invention relates to a process and apparatus for controlling afterburning in the regenerator of a FCC unit. The process and apparatus inject steam into the dilute phase within a regenerator to promote combustion of carbon monoxide before it enters the regenerato... | 08/17/2004 |
| 6753351 | Supported catalyst activation A process for activating a supported metal catalyst or catalyst precursor useful for the hydrogenation of carbon monoxide to form a mixture of hydrocarbons, comprising reducing with a hydrogen-containing gas at elevated temperature so that at least a portion is in t... | 06/22/2004 |
| 6713422 | Method for processing pTHF polymerization catalysts A process for working up at least partially deactivated polymerization catalysts for the polymerization or copolymerization of THF which are contaminated with the products of the polymerization or copolymerization of THF comprises (a) in a first step, cleanin... | 03/30/2004 |
| 6713423 | Method for reactivating activated carbon and activating carbon The present invention generally relates to a method of thermally reactivating activated carbon via a two-step process: steam followed by pyrolysis; whereby the steam is preferably deoxygenated. Activated carbons reactivated by this method resemble their virgin count... | 03/30/2004 |
| 6664206 | Method for reactivating catalyst for methacrylic acid preparation This invention provides a method of reactivating a catalyst for methacrylic acid production, which catalyst is used in production of methacrylic acid through vapor-phase oxidation of methacrolein or vapor-phase oxidative dehydrogenation of isobutyric acid... | 12/16/2003 |
| 6627579 | Titanium oxide, photocatalyst comprising same and photocatalytic coating agent Titanium oxide exhibiting a superior photocatalytic activity through irradiation of a visible light as well as an ultraviolet light, and a photocatalyst and a photocatalytic coating agent including said titanium oxide, wherein said titanium oxide has a va... | 09/30/2003 |
| 6573413 | Process for activating catalyst for the hydroxylation of aromatics A method for catalytic production of hydroxylated aromatics by exposing zeolite catalyst to a reducing atmosphere to activate said catalyst, and reacting an aromatic with nitrous oxide in the presence of said activated catalyst.... | 06/03/2003 |
| 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 |
| 6395664 | Process for reactivating a deactivated dehydrocyclodimerization catalyst with water This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The... | 05/28/2002 |
| 6316647 | Cation-exchanged clay mineral, packing material for chromatography using the same and method of producing the same Disclosed herein are a cation-exchanged clay mineral comprising a swelling clay mineral with the cations between layers substantially replaced by low-valence metal amine complexes and/or low-valence metal ammine complexes, and a packing material for chrom... | 11/13/2001 |
| 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 |
| 6232254 | Method of cleaning and/or regenerating wholly or partially de-activated catalysts for stack-gas nitrogen scrubbing The invention concerns a method of cleaning and/or regenerating wholly or partially de-activated catalysts for stack-gas nitrogen scrubbing, in which the catalysts are treated with a washing and/or regenerating liquid, characterized by the washing or rege... | 05/15/2001 |
| 6217749 | Process for hydrotreating a hydrocarbon feedstock and apparatus for carrying out same A process for hydrotreating a hydrocarbon feedstock (1) involving the use of at least one hydrotreatment, particularly hydrodesulfurization, reactor (2) and a fractionation unit (3), which latter contains two distinct injection zones (4, 5) for the hydroc... | 04/17/2001 |
| 6206941 | Apparatus and process for carbonization and activation of carbonaceous materials An apparatus for converting carbonaceous raw materials into a carbonized product and activating the product, includes a device for heating the carbonaceous raw materials to form a carbonized product, and equipment for activating the carbonized product and... | 03/27/2001 |
| 6171992 | Treatment process for a methanol reforming catalyst therefor A methanol reforming reactor includes a reforming reaction space into which a methanol reforming catalyst is charged. The methanol reforming catalyst is present at the start of the reforming reaction operation in a pre-aged state in the reforming reaction... | 01/09/2001 |
| 6118037 | Process for the removal of contaminant compounds containing one or more heteroatoms of sulfur, nitrogen and/or oxygen from hydrocarbon streams Process for the removal of contaminant compounds containing one or more heteroatoms of sulfur, nitrogen and/or oxygen from hydrocarbon streams characterized in that it comprises: an adsorption step in which said compounds are adsorbed by means of an adsor... | 09/12/2000 |
| 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 |
| 6037291 | Regeneration of adsorbers utilizing thermal oxidation of adsorbates An improvement in the operation of a thermal oxidizer during regeneration of an adsorber, wherein adsorbates collected in the adsorber are removed from the adsorber and introduced into the thermal oxidizer, by regenerative steam passed through the adsorbe... | 03/14/2000 |
| 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 |
| 5994260 | Cerium oxide with pores having a lamellar structure, preparation method therefor and use thereof in catalysis A cerium oxide with pores having a uniform lamellar structure. The pores may be at least partially arranged in substantially parallel directions and may also extend throughout the grain. The method for preparing said cerium oxide comprises heat treating a... | 11/30/1999 |
| 5868922 | Analyzer system for strippable hydrocarbon on FCC catalyst A FCC process in which spent catalyst is stripped of hydrocarbon in a stripping zone prior to entering the regenerator. In order to maximize the amount of strippable hydrocarbon removed in the stripping zone with minimal use of stripping gas, a sample of ... | 02/09/1999 |
| 5863417 | Method for analyzing for strippable hydrocarbon on FCC catalyst A FCC process in which spent catalyst is stripped of hydrocarbon in a stripping zone prior to entering the regenerator. In order to maximize the amount of strippable hydrocarbon removed in the stripping zone, a sample of spent catalyst is removed prior to... | 01/26/1999 |
| 5741749 | Regeneration of a titanium-containing molecular sieve A titanium-containing molecular sieve which has been used as an oxidation catalyst is regenerated to provide a level of performance comparable to that of freshly prepared catalyst by heating in the presence of a gas stream comprised of less than 5 volume ... | 04/21/1998 |
| 5739071 | Method and apparatus for regeneratinig and stabilizing dehydrogenation catalysts A method and apparatus are disclosed for regenerating and/or stabilizing the activity of a dehydrogenation catalyst used in dehydrogenating an alkylaromatic hydrocarbon to obtain an alkenylaromatic hydrocarbon, the method comprising the steps of continuou... | 04/14/1998 |
| 5686648 | Continuous process for the isomerization of olefins with regeneration of the catalyst Continuous process for the skeletal isomerization of n-olefins containing at the most 20 carbon atoms, in the presence of a catalyst essentially constituted by alumina and titanium, in which a charge containing the said n-olefins is made to flow through a... | 11/11/1997 |
| 5686369 | Method and apparatus for treating dehydrogenation catalysts A method and apparatus are disclosed for regenerating and/or stabilizing the activity of a dehydrogenation catalyst used in dehydrogenating an alkylaromatic hydrocarbon to obtain an alkenylaromatic hydrocarbon, the method comprising the steps of continuou... | 11/11/1997 |
