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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...
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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...
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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...
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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...
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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...
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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...
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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 (...
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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 ...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 ...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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WO/2003/101616A1 |
The present invention discloses the process for regenerating catalyst containing titanium, which is characterised by deactivated catalyst is treated in the acid solution whose PH is equal to or less than 3, then dried and calcinated. Thi...
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WO/2003/099437A1 |
The invention relates to a method and a device for purifying and/or regenerating entirely or partially deactivated catalysts used to remove nitric acid from the exhaust gases of fossil-fired boiler plants, especially coal-fired boiler pl...
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WO/2003/099747A1 |
The present invention provides a method for adding heat to a reactor system used to convert oxygenates to olefin, in which supplemental heat is added with a heating fuel, e.g., a torch oil, having low autoignition temperature, low sulfur...
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WO/2003/093205A2 |
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...
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WO/2003/093207A2 |
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...
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WO/2003/083478A1 |
It is intended to provide a highly sensitive bioassay sensor system wherein nonspecific adsorption of impurities such as proteins in a biological sample is prevented. In this system, use is made in amplification of polyethylene particles...
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WO/2003/080766A2 |
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...
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WO/2003/078914A1 |
The invention relates to a method and device for at least partially removing carbon deposits from a heat exchanger. The inventive method consists in performing an oxidation treatment comprising at least one controlled oxidation step, at ...
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WO/2003/076074A1 |
A unified process which couples a unique in-situ catalyst regeneration process with a continuous reactive distillation under pressure for the alkylation of light aromatic hydrocarbons such as benzene with C¿2?-C¿30? olefins using a sol...
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WO/2003/074451A1 |
An alkylating agent alkylates an alkylation substrate in a solid catalyst alkylation process in which an alkylation reactor produces a reaction effluent and a catalyst regeneration zone produces a hydrogen-containing regeneration effluen...
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WO/2003/064355A1 |
A process for enhancing metal catalysts for carbon monoxide hydrogenation comprising reducing the catalyst so that at least a portion is in the metallic state, impregnating under a non−oxidative atmosphere with a solution of a salt of ...
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WO/2003/064040A1 |
There is provided a process for renewing the activity of supported metal catalysts for the hydrogenation of carbon monoxide to form a mixture of hydrocarbons comprising decreasing the hydrocarbon content of the catalyst, preferably by co...
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WO/2003/064034A2 |
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, impregnat...
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WO/2003/064356A1 |
There is provided a process for hydrocarbon synthesis wherein a supported metal catalyst for hydrogenating carbon monoxide to form a mixture of hydrocarbons is regenerated by decresing its hydrocarbon content, impregnating under a non−...
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WO/2003/064033A1 |
There is provided a process for renewing the activity of used, supported metal catalysts for the hydrogenation of carbon monoxide to form a mixture of hydrocarbons comprising decreasing the hydrocarbon content of the catalyst, impregnati...
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WO/2003/062188A2 |
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...
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WO/2003/059850A1 |
The present invention provides a process for making an olefin product from an oxygenate feedstock which comprises: a) contacting the feedstock in a reaction zone with a catalyst comprising i) a molecular sieve having defined pore opening...
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WO/2003/055603A1 |
The invention relates to a method for separating and recycling catalyst components of a chemical reaction mixture involving oxidative direct carbonylation.
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WO/2003/055602A1 |
The invention relates to a method for separating and recycling catalyst components from a chemical reaction mixture. Said method is characterised in that it comprises at least one extraction step.
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