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8889578 Processes for regenerating sulfur-poisoned, ruthenium and/or ruthenium compound-containing catalysts  
Processes comprising: providing a catalyst comprising a catalytic component selected from the group consisting of ruthenium, ruthenium compounds, and combinations thereof, wherein the catalyst is...
8778823 Feed additives for CCR reforming  
The process involves the use of specifically selected coke precursor compounds from the front end of oil distillate fractions that contain C11 to C14 hydrocarbons and their use as additives in the...
8772191 Process for the off site regeneration of solid catalysts  
The invention provides a process for the off site regeneration of a solid catalyst, comprising two consecutive steps: a first step of washing the catalyst using one or more fluid(s) in the...
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.
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...
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...
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...
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...
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...
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...
7291311 Process for controlling a moving bed combustion zone and its use  
Process for controlling the combustion zone of a fluidized bed process comprising a regeneration zone and a reaction zone, the catalyst circulating between these two zones, and the regeneration...
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...
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,...
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...
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...
6506702 Process and vessel for regeneration of a catalyst including monitoring and monitoring and control of combustion completion  
The invention concerns a process for regenerating a catalyst in a fixed bed, for example a catalyst for reforming or for aromatic compound production, including a step for monitoring and...
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...
6133183 Process for regenerating a catalyst for the production of aromatic compounds or for reforming, with improved oxychlorination  
The invention concerns a process for regenerating a catalyst for the production of aromatic compounds, in particular for reforming, comprising combustion (A), oxychlorination (B) and calcining (C)...
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...
6103652 Staged combustion process and apparatus for regenerating a reforming or aromatic compound production catalyst in a moving bed  
The invention concerns a process for moving bed regeneration of a reforming or aromatic hydrocarbon production catalyst. The catalyst includes a support, at least one noble metal and at least one...
6048814 Process and unit for regeneration of a catalyst for the production of aromatic compounds or for reforming  
The invention concerns a process and unit for regenerating a catalyst for the production of aromatic compounds, in particular for reforming, the catalyst being in a moving bed, comprising...
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...
5866495 Method of regenerating deactivated catalysts  
A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with...
5776849 Regeneration of severely deactivated reforming catalysts  
The invention is directed a process for regenerating deactivated reforming catalysts comprising at least one Group VIII metal on zeolite L, preferably wherein the catalysts are extruded using a...
5763348 Method of regenerating deactivated catalyst  
A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with...
5756414 Method of regenerating deactivated catalyst  
The present invention is a process for regenerating deactivated catalyst or redispersing catalytic metal in a fresh catalyst comprising at least one Group VIII catalytic metal, zeolite, an inert...
5739070 Process for regenerating a fluorination catalyst  
Process for regenerating a fluorination catalyst The invention relates to a process for regenerating a fluorination catalyst containing chromium and magnesium after use in a fluorination reaction,...
5726112 Method of regenerating deactivated catalysts  
A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with...
5712214 Regeneration of aromatization catalysts  
A low-pressure, high-temperature, wet post-treatment after oxyhalogenation during regeneration to improve activity and selectivity recovery of a regenerated catalyst involves exposing a...
5698486 Method of regenerating deactivated catalysts  
A deactivated reforming catalyst comprising a type L zeolite containing a Group VIII noble metal may be regenerated and have enhanced dispersion by a method involving contacting the catalyst with...
5573988 Catalyst regeneration process  
The present invention concerns a regeneration process for a catalyst containing at least one metallic element selected from the group formed by platinum, palladium, ruthenium, rhodium, osmium,...
5457077 Moving bed regeneration process with combined drying and dispersion steps  
A regeneration process for reconditioning catalyst particles containing platinum by transferring the catalyst particles through a combustion zone and a reconditioning zone is disclosed. Drying of...
5407877 Catalyst treatment process  
A process for the reactivation of a chromium-based fluorination catalyst, in particular chromia, by contacting the deactivated chromium-based fluorination catalyst with an atmosphere containing...
5397458 Moving bed regeneration process with internally mixed chloride gas  
A regeneration process and apparatus eliminates the need for an external chlorination recycle loop. The method and apparatus uses two-pass internal mixing of a chlorine compound input stream and...
5391292 Cyclic reforming catalyst regeneration  
Disclosed is a method for starting up a cyclic or semi-cyclic reforming reactor after catalyst regeneration. The method mitigates disruptions to the reforming unit after catalyst regeneration,...
5378669 Method for treating a catalyst  
A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst,...
5376607 Method for controlling moisture by coke composition  
A semi-continuous process for combusting coke from catalyst particles in a fixed bed is improved by rejecting from the combustion process a high moisture content flue gas stream which is produced...
5270272 Sulfur removal from molecular-sieve catalyst  
A sulfur-sensitive catalyst which has been deactivated by accumulating sulfur on the catalyst is desulfurized by contact with ammonia at high temperature. The technique is particularly effective...
5260238 Process for regenerating a deactivated catalyst  
There is disclosed a process for regenerating a deactivated catalyst containing a zeolite and a noble metal of group VIII of the Periodic Table supported thereon which comprises subjecting the...
5256612 Method for treating a catalyst  
A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst, (b)...
5254513 Method for the reactivation of spent alumina-supported hydrotreating catalysts  
Spent or inactive alumina-supported catalysts removed from a catalytic hydrotreating process and having carbonaceous and metallic deposits thereon are reactivated. After a solvent wash to remove...
5227350 Fluorination catalyst regeneration  
A method for regenerating a used fluorination catalyst such as a chromium-containing compound comprises contacting the used catalyst at a temperature of 300° C. to 500° C. with a mixture of an...
RE34250 Process for regenerating sulfur contaminated reforming catalysts  
The present invention is a process for regenerating a sulfur-contaminated, highly selective, large-pore zeolite catalyst. It comprises a multistep process involving exposure of the catalyst to a...
5188996 Redispersion of noble metal on low acidity support  
A process is described for redispersing agglomerated metal on a catalyst. The catalyst comprises noble metal on a low acidity oxide support, and the process comprises contacting the catalyst with...
5155074 Process for regenerating a monofunctional large-pore zeolite catalyst having high selectivity for paraffin dehydrocyclization  
The present invention is a process for regenerating a large-pore zeolitic catalyst that has been deactivated by the formation of Group VIII metal agglomerates on the catalyst surface. In the...
5151392 Moving bed regeneration process with separate dispersion and chloriding steps  
A process for reforming hydrocarbons has a regeneration process for reconditioning catalyst particles containing platinum that improves the process by transferring the catalyst particles through a...
5132259 Method for reactivating catalysts used in catalytic vapor phase process for producing dihydrocarbyl carbonates  
A process for the preparation of dihydrocarbyl carbonates comprising contacting an alkanol such as methanol, carbon monoxide and oxygen with a heterogeneous catalyst which comprises a metal halide...
5106798 Method for regenerating a Group VIII noble metal deactivated catalyst  
A method for regenerating a Group VIII noble metal catalyst which has been contaminated with coke during a reforming process. The method comprises (a) burning off the coke from the catalyst, (b)...
5073529 Method of regenerating a nonacidic zeolite catalyst  
A deactivated catalyst comprising a nonacidic zeolite and a Group VIII metal is regenerated by a two-step carbon burn process. The first oxidation step contacts the nonacidic zeolite catalyst with...
5053371 Catalyst regeneration method with three-zone combustion gas addition  
A semi-continuous process for combusting coke from catalyst particles in a fixed bed is improved by injecting combustion air for the regeneration section to the three places, upper air to the burn...

Matches 1 - 50 out of 171 1 2 3 4 >