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9006124 |
Process for synthesis of doped titania nanoparticles having photocatalytic activity in sunlight
Present disclosure provides a process for the synthesis of doped titania nanoparticle having photocatalytic activity greater than 90% at 2 hours under sunlight irradiation. The process involves... |
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8927449 |
Multiple burn zones with independent circulation loops
A process for a continuous regeneration of a catalyst wherein the regeneration section includes at least two separate zones. The regeneration includes a combustion zone, and an oxygen boost zone,... |
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8912108 |
Methods of regenerating aromatization catalysts
Methods for treating or rejuvenating a spent catalyst are described. These methods can employ a step of halogenating the spent catalyst, followed by decoking the halogenated spent catalyst. The... |
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8895464 |
Robustness of coke burning from catalyst for light paraffin dehydrogenation process
A process for a continuous regeneration of a catalyst wherein the regeneration section includes at least two separate zones. The regeneration includes an upper combustion zone, and an lower... |
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8865608 |
Turndown thermocompressor design for continuous catalyst recovery
Systems and processes for regenerating catalyst are provided herein that include a catalyst regeneration tower having a cooling zone that receives a catalyst cooling stream generated by a cooling... |
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8716161 |
Methods of regenerating aromatization catalysts
Methods for treating or rejuvenating a spent catalyst are disclosed. Such methods can employ a step of halogenating the spent catalyst, followed by decoking the halogenated spent catalyst. |
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8680000 |
Process and vessel for regenerating a reforming catalyst
The invention concerns a process for regenerating a catalyst for the production of aromatic hydrocarbons or for reforming, comprising a step for combustion in a zone A comprising at least 2 beds... |
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8673801 |
Process for regenerating a reforming catalyst
The invention concerns a process for regenerating a catalyst for the production of aromatic hydrocarbons or for reforming. Said process comprises a step for combustion in a zone A comprising at... |
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8544527 |
Method to reduce condensation in a cooling zone of a continuous catalyst regeneration system
A process for providing a blended cooling air stream to a cooling zone cooler in a continuous catalyst regeneration system. The process includes removing a first effluent stream from a... |
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8193111 |
Process or system for desorbing an adsorbent bed
One exemplary embodiment can be a process for desorbing an adsorbent bed. The process can include passing a desorbent stream through the adsorbent bed to remove at least one of a nitrile compound... |
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8173567 |
Process for regenerating catalyst
Disclosed is a catalyst distributor and process for spreading catalyst over a regenerator vessel. Nozzles disposed angular to a header of the distributor spread catalyst throughout a full cross... |
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8071497 |
Process and facility for removing one or more compounds
One exemplary embodiment is a refinery or a petrochemical production facility. The refinery or petrochemical production facility can include: a) a catalyst regeneration zone;b) a halogen removal... |
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8012899 |
Recycling of ionic liquid catalyst
Provided is a process for safely transporting or recycling an ionic liquid catalyst based on chloroaluminates. The process comprises mixing a secondary alcohol with an ionic liquid based on a... |
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7981832 |
Methods of activating chromium catalysts
New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature... |
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7863209 |
Methods for recycling catalyst compositions for aromatic ring halogenation
A method for recovering and reusing a ring-halogenation catalyst comprises: (A) contacting an aromatic compound with chlorine or bromine in the presence of a catalyst composition, where the... |
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7847142 |
HF alkylation process with acid regeneration
The regeneration of HF alkylation acid in an alkylation unit is improved by withdrawing a vapor stream from the HF regenerator tower and condensing the stream to form a liquid fraction which is... |
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7803979 |
Method for removing water from an alkylation process system
A method is disclosed for removing water from an alkylation process system using a water removal column to remove water from a re-run column (catalyst regeneration column) overhead stream. |
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7745675 |
Regeneration of platinum-germanium zeolite catalyst
This invention relates to a process for regeneration of a zeolite catalyst, specifically an aluminosilicate zeolite with germanium substituted in the framework for silicon and with platinum... |
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7615510 |
Methods of activating chromium catalysts
New methods for activating chromium catalysts for polymerization processes decrease the amount of time required for activation and increase catalyst activity. Rapid heating to a first temperature... |
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7585803 |
Catalyst regeneration method
A method of operating a continuous system for a catalyst regeneration process wherein the regeneration section includes a combustion zone, at least one oxygen boost zone, a halogenation zone and a... |
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7538253 |
Method for preparing catalyst for partial oxidation of methylbenzenes
The present invention relates to a novel method for preparing a catalyst of the formula (1), WOx wherein, W represents tungsten atom, O represents oxygen atom x represents a value determined by... |
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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... |
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7223710 |
Cyclic catalyst regeneration process using a circulating stream for desorption
A process in which halogen is recovered from a cyclic operation for regenerating hydrocarbon conversion catalysts is disclosed. The process uses an arrangement of beds of adsorbent and a... |
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7045477 |
Process for continuously regenerating catalyst particles
A process for continuously regenerating catalyst particles comprising: passing deactivated catalyst particles downwards in sequence through the first coke-burning zone, second coke-burning zone,... |
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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... |
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6921731 |
Process for regenerating Pd catalysts
Process for regenerating a Pd catalyst after a homogeneously catalyzed C—C coupling reaction in which the Pd catalyst precipitates, is separated from the reaction mixture and subsequently treated... |
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6881391 |
Method for removing halogen from a vent stream
A method for decreasing the environmental release of a halogen from a process for regenerating catalyst particles in a catalyst bed of a regeneration zone is disclosed. |
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6872679 |
Heterogeneous catalyst regeneration
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... |
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6790802 |
Cyclic catalyst regeneration process using adsorption and desorption on vent stream
A method of recovering halogen-containing materials from the cyclic catalyst regeneration operation of a catalytic hydrocarbon conversion process is disclosed. The method uses an arrangement of... |
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6784132 |
Cyclic catalyst regeneration process using adsorption and desorption
A method of recovering halogen-containing materials from the cyclic catalyst regeneration operation of a catalytic hydrocarbon conversion process is disclosed. The method uses an arrangement of... |
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6780815 |
Process for preparing fluorination catalyst
A process for preparing a fluorination catalyst using a low pressure activating step followed by a high pressure activating step. |
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6734130 |
Hydrocarbon hydrogenation catalyst composition, a process of treating such catalyst composition, and a process of using such catalyst composition
A process of treating a catalyst composition containing palladium, an inorganic support, and a catalyst component, such as silver and/or a modifier such as alkali metal fluoride, is provided. The... |
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6593264 |
Catalytic reforming catalyst activation
A reforming catalyst containing a Group VIII metal, or a Group VII B metal, or tin, or germanium, or copper, or selenium or combinations of any two or more metals or oxides thereof is activated... |
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6551660 |
Method for removing reactive metal from a reactor system
A method for reducing catalyst contamination in a hydrocarbon conversion reactor system, comprising the steps of contacting at least a portion of a metal-coated hydrocarbon conversion reactor... |
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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... |
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6461992 |
Method for reducing chloride emissions from a moving bed catalyst regeneration process
A method is disclosed for decreasing the emissions of chlorine-containing species from a moving bed process for regenerating spent catalyst particles with a recycle gas stream. A recycle gas... |
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6419986 |
Method for removing reactive metal from a reactor system
A method of removing reactive metal from a metal-coated reactor system, comprising contacting at least a portion of a metal-coated reactor system containing reactive metal with a getter to produce... |
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6413434 |
Method for eliminating halogenated compounds contained in a gas or liquid
The present invention concerns a process for eliminating, reducing and/or suppressing halogenated compounds, in particular chlorinated compounds, contained in a gas or a liquid, in which the gas... |
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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... |
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6294492 |
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... |
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6291381 |
Catalytic reforming catalyst activation
Catalyst activation of a platinum reforming catalyst system contained in a multiple reactor system by simultaneously reducing the catalyst with a sustained hydrogen flow through the multiple... |
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6290916 |
Apparatus for controlling moisture in a catalyst regeneration process
A method and apparatus are disclosed for removing water from a recycle gas stream in a catalyst regeneration process. A recycle gas stream contacts catalyst and the catalyst sorbs water from the... |
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6153091 |
Method for reducing chloride emissions from a moving bed catalyst regeneration process
A method is disclosed for decreasing the emissions of chlorine-containing species from a moving bed process for regenerating spent catalyst particles with a recycle gas stream. A recycle gas... |
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6147022 |
Process for degraded-mode regeneration of a catalyst
Process for regeneration of a catalytic moving bed in which the catalyst successively passes through at least one combustion zone A, at least one halogenation zone B, and at least one calcination... |
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6123833 |
Method for controlling moisture in a catalyst regeneration process
A method and apparatus are disclosed for removing water from a recycle gas stream in a catalyst regeneration process. A recycle gas stream contacts catalyst and the catalyst sorbs water from the... |
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6121180 |
Precombustion of halogen-containing compounds in catalyst regeneration processes
A method for regenerating a hydrocarbon conversion catalyst wherein at least a portion of a halogen-containing compound is precombusted in a precombustion zone, and the catalyst is regenerated in... |
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6117809 |
Method for decreasing chloride emissions from a catalyst reduction process
A method is disclosed for recovering chlorine-containing species from an outlet stream of a zone in which the catalytic metal of a chloride-containing catalyst is reduced. The outlet stream is... |
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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... |
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6034016 |
Method for regenerating halogenated Lewis acid catalysts
A method for removing high molecular weight solid and liquid tars and oligomers from halogenated Lewis acids catalysts is disclosed. The Lewis acids incorporating such tars and oligomers are... |
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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... |