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Matches 601 - 650 out of 5,831

Document Document Title
WO/2004/080591A1
The invention relates to a method for the regeneration of zeolite catalysts, in order to maintain a high and stable activity of the catalyst. In the method, the regeneration is performed in a CFB reactor system wherein a reaction involvi...  
WO/2004/078343A1
The invention relates to a method for a Re2O7 doped catalyst support deactivated (deactivated catalyst) by a hydrocarbon mixture containing C2-C6 olefin (C2-6 lot) used during a metathesis. The inventive method consists in treating the d...  
WO2004039498A3
This invention relates to a process for converting petrochemical synthesis reaction organic by-products and residues containing spent catalytic materials into substantially stable compounds. In particular, this invention relates to conve...  
WO/2004/076067A1
The present invention is directed toward methods for cleaning catalytic converters, particularly it pertains to methods of submerging a catalytic converter into an aqueous bath and applying a pressurized fluid through the catalytic conve...  
WO2003093205A3
Disclosed is a method for the production of ethylenically unsaturated aliphatic hydrocarbons containing halogen by thermal cleavage of saturated aliphatic hydrocarbons containing halogen. An educt gas flow is introduced into a reactor wh...  
WO/2004/073835A1
Disclosed is a method for removing dirt (14) and/or clogged material (13) from a set (11) of ducts (12), especially interconnected parallel ducts (12) such as a catalytic converter module, by means of a treatment with a liquid (2). Said ...  
WO/2004/071657A1
The invention relates to a process for the regeneration of mixed oxide catalysts that are used in ammonoxidation for the production of nitriles, by passing an oxidizing agent over the catalyst at elevated temperature. The invention relat...  
WO2004026796A3
Methods and apparatus for improving the efficiency and effectiveness of in situ reduction of a Fischer-Tropsch catalyst slurry. The preferred embodiments of the present invention are characterized by a system that utilizes a co-feed of c...  
WO/2004/065007A1
A process for recovering an active catalyst component from a process stream containing, in addition to dissolved active catalyst component, also at least aldols, acetals and/or esters, includes admixing an alcohol component comprising at...  
WO2003093207A3
The invention relates to a method for producing ethylenically unsaturated aliphatic halogenic hydrocarbons by the thermal cleavage of saturated aliphatic halogenic hydrocarbons. According to said method, an educt gas stream is introduced...  
WO2004052535A8
A calcined dehydrogenation catalyst composition having iron and potassium supported on alumina and metal ions selected from e.g. indium, calcium, samarium, cerium, sodium, molybdenum and tungsten, zinc, manganese, copper and lanthanum. A...  
WO2004031546A3
A method and apparatus for regenerating a lean NOx adsorber is disclosed where the NOx adsorber isused to treat exhaust gases created during the combustion of gaseous fuels in general. A bypass line isused to maintain a target regenerati...  
WO2004033867A3
The combustion process is carried out with a catalyst/filtering/trapping support in contact with flue gases, whereby the catalyst and/or filtering and/or trapping support is regenerated or rejuvenated intermittently by contacting it with...  
WO/2004/062765A1
Disclosed herein are methods for recovering diphosphite-containing compounds from mixtures comprising organic mononitriles and organic dinitriles, using liquid-liquid extraction. Also disclosed are pre-treatments to enhance extractabilit...  
WO/2004/060553A1
A method for regenerating spent supported metal catalysts comprising treating the spent catalyst with an organo-metallic complex forming agent having an ionization constant pK1 of at least 2.5. The catalyst activity is restored to an act...  
WO2001068247A8
This invention relates to a process for separating one or more products from a reaction product fluid comprising a metal-organophosphorus ligand complex catalyst, optionally free organophosphorus ligand, said one or more products, one or...  
WO/2004/052535A1
A calcined dehydrogenation catalyst composition having iron and potassium supported on alumina and metal ions selected from e.g. indium, calcium, samarium, cerium, sodium, molybdenum and tungsten, zinc, manganese, copper and lanthanum. A...  
WO/2004/048302A1
The present invention relates to a process for the prepa­ration of bisphenols which comprises the reaction of a carbonyl compound containing at least two carbon atoms with an aromatic compound, containing a hydroxyl group and at least o...  
WO/2004/043575A1
Data on variation with time of each unit of denitration catalyst (101) is managed according to the data collected by periodical maintenance management (step S110) and daily management (step S120), and management of variation with time an...  
WO/2004/039498A2
This invention relates to a process for converting petrochemical synthesis reaction organic by-products and residues containing spent catalytic materials into substantially stable compounds. In particular, this invention relates to conve...  
WO/2004/039754A1
A reactor apparatus and related method for controlling at least one process variable in a circulating fluid bed oxygenates to olefins reactor system comprising a riser are provided. The process variable is selected from at least one of (...  
WO/2004/037412A1
The invention provides processes for the recovery of a catalyst which are to be applied to the reactions wherein boron trifluoride or a complex thereof is used as the catalyst, that is, (I) a process for the recovery of a catalyst which ...  
WO/2004/037409A1
The invention concerns a method for regenerating a hydrogenation catalyst which has been used during a gas phase hydrogenation, said method involving a stripping process with a substance or mixture of substances having no oxidizing effec...  
WO/2004/033867A2
The combustion process is carried out with a catalyst/filtering/trapping support in contact with flue gases, whereby the catalyst and/or filtering and/or trapping support is regenerated or rejuvenated intermittently by contacting it with...  
WO/2004/033091A1
A composition for controlling CO and NO¿x? emissions during FCC processes comprises: (i) acidic oxide support, (ii) cerium oxide, (iii) lanthanide oxide other than ceria such as praseodymium oxide, (iv) optionally, oxide of a metal from...  
WO/2004/030818A1
The present invention provides a process for regeneration a spent aromatics alkylation or transalkylation catalyst comprising a molecular sieve by contacting the spent catalyst with an oxygen-containing gas at a temperature of about 120 ...  
WO2003062188A3
The invention relates to a method for the hydrogenation of compounds comprising cyano or nitro functions to give amino compounds aminonitriles or nitroamines. According to the invention, a method for continuous hydrogenation of compounds...  
WO/2004/031327A1
The present invention is directed to a method and system for integrating a catalyst regeneration system (614) with a plurality of hydrocarbon conversion apparatuses (620A, 602B), preferably, a plurality of multiple riser reactor units. T...  
WO/2004/031549A1
A method of regenerating a NOx adsorber is disclosed where the NOx adsorber is used to treatexhaust gases created during the combustion of gaseous fuels in general. Methane is introducedinto a reformer or exhaust line wherein hydrogen ge...  
WO/2004/031546A2
A method and apparatus for regenerating a lean NOx adsorber is disclosed where the NOx adsorber isused to treat exhaust gases created during the combustion of gaseous fuels in general. A bypass line isused to maintain a target regenerati...  
WO/2004/029009A1
The present invention is a process for removing catalyst fines from an effluent stream in an oxygenate to olefin process. Specifically, the catalyst fines in the effluent stream are separated from the effluent stream. Then the carbonaceo...  
WO/2004/026447A1
The invention relates to a method for the regeneration of deNOx catalysts with a reduced activity caused by the accumulation of phosphor and phosphorous compounds. The method is characterised in that the catalysts are treated with an ess...  
WO/2004/026796A2
Methods and apparatus for improving the efficiency and effectiveness of in situ reduction of a Fischer-Tropsch catalyst slurry. The preferred embodiments of the present invention are characterized by a system that utilizes a co-feed of c...  
WO/2004/026466A1
Used titanium-containing silicon oxide catalysts are regenerated by heating the used catalyst at a temperature of at least 400 °C in the presence of a oxygen-containing gas stream, followed by impregnation with a titanium source, and th...  
WO2003080766A3
The invention pertains to a process for combusting coke of a coke-containing FCC catalyst in a regeneration unit of a FCC unit comprising the introduction of oxygen-containing gas through a gas-transport unit into the regeneration unit a...  
WO/2004/024665A1
The invention concerns a method for producing acrylic acid from propane, which consists in passing a gas mixture including propane, water vapour, and optionally an inert gas and/or molecular oxygen, on a catalyst of formula (I): Mo1VaSbb...  
WO/2004/024664A1
The invention concerns a method for producing acrylic acid from propane, in the absence of molecular oxygen which consists in: a) introducing a gas mixture free of molecular oxygen and comprising propane, water vapour, and, optionally, a...  
WO/2004/022226A1
The invention relates to a method for regenerating DeNOx catalysts having an increased SO2/S03 conversion rate as a result of the cumulation of iron compounds, and is characterised in that the catalysts are treated with an essentially aq...  
WO/2004/018092A1
A catalyst regenerator (100) has a first section (110) and a second section (120) and is operated such that carbon from a carbon-contaminated catalyst (140) is converted to carbon monoxide in the first section (110) and that carbon monox...  
WO/2004/018392A1
The present invention provides a process for making an olefin product from an oxygenate-containing feedstock comprising: a) contacting the feedstock in a reaction zone with catalyst particles comprising a molecular sieve containing acid ...  
WO/2004/014793A2
The invention provides compositions and methods to reduce NOx emissions from the flue gas of a fluid catalytic cracking (FCC) unit (10). The invention also provides methods for reducing CO emissions from the regenerator (2) and/or the fl...  
WO/2004/014793A1
The invention provides compositions and methods to reduce NOx emissions from the flue gas of a fluid catalytic cracking (FCC) unit (10). The invention also provides methods for reducing CO emissions from the regenerator (2) and/or the fl...  
WO/2004/013361A1
A dry method of recovering a platinum group element, comprising charging a substance containing platinum group element to be treated and a copper source material containing copper oxide together with a flux component and a reducing agent...  
WO2002083818A3
The present invention is directed to a method of desulfurization of a sulfur laden hydrocarbon liquid that comprises contacting the liquid with a sponge nickel metal alloy, removing the sulfur free liquid, regeneration of the alloy by co...  
WO/2004/007431A1
The invention relates to a method for the recycling of a Lewis acid from a reaction mixture (I), obtained from the hydrocyanation of an olefinically-unsaturated compound to give a nitrile, which has a miscibility gap with water under cer...  
WO2002100984A9
A baffle-style stripping arrangement for an FCC process having substantially horizontal stripping baffles is disclosed. The stripping baffles comprise a perforated section and an imperforate section which generates transverse movement of...  
WO/2004/007075A1
The present invention generally relates to a method of thermally reactivating activated carbon via a two−step process: steam followed by pyrolysis&semi whereby the steam is preferably deoxygenated. Activated carbons reactivated by this...  
WO2003041860A3
An in situ process for conducting regeneration of spent hydrocarbon synthesis catalyst. Regenerated, but not yet re-activated, catalyst (15) may be introduced into an operating HCS reactor (1) that has catalyst rejuvenation means (14). A...  
WO/2004/000461A1
A method of regenerating a NOx removal catalyst, which enables easily restoring the catalytic activity of deteriorated NOx removal catalyst, and which can be performed easily and ensures a high operating efficiency. In particular, a meth...  
WO2003051510A3
The granular, shape-selective zeolite catalyst used as a bulk material in a reactor for producing lower olefins on the basis of a mixture of higher olefins has to be decoked from time to time. For this purpose, the reactor is scavenged w...  

Matches 601 - 650 out of 5,831