Entries |
Document | Title | Date |
20080227625 | Catalyst For NOx And/Or SOx Control - A catalytic additive for reducing NOx, SOx, and/or precursors thereof in a regenerator flue gas comprises an alkaline earth metal, phosphorous, and at least one transition metal on an alumina-based support. | 09-18-2008 |
20090264278 | Method and Apparatus for Addition of an Alkali Metal Promoter to a Dehydrogenation Catalyst - An apparatus and method for adding an alkali metal promoter into steam and contacting the solution with a dehydrogenation catalyst during a dehydrogenation reaction is disclosed. The apparatus has a first conduit capable of transporting an alkali metal salt solution and a second conduit in fluid communication with the first conduit, the second conduit capable of transporting steam so that the alkali metal salt is dissipated into the steam prior to entry into a dehydrogenation reaction zone. | 10-22-2009 |
20090305869 | METHOD OF REGENERATING RUTHENIUM CATALYSTS FOR THE RING HYDROGENATION OF PHTHALATES - The present invention relates to a method of regenerating a ruthenium catalyst for the hydrogenation of phthalates, which comprises flushing the catalyst with inert gas in a regeneration step until the original activity or part of the original activity has been attained. | 12-10-2009 |
20100041543 | Method and Device for the Regeneration of a Particle Filter Arranged in the Exhaust Gas Train of an Internal Combustion Engine - A method and a device for the regeneration of a particle filter, especially a diesel particle filter, arranged in the exhaust gas train of an internal combustion engine, wherein an exhaust gas stream to be cleaned is supplied to the at least one particle filter. The exhaust gas stream supplied to the at least one particle filter is a raw exhaust gas stream of the internal combustion engine, into which, during regeneration mode, a heated exhaust gas stream at a higher temperature than the raw exhaust gas stream is mixed at a point upstream of the particle filter under the control of at least one open-loop and/or closed-loop control device, which actuates a throttle device and/or shut-off device in accordance with predetermined regeneration parameters. | 02-18-2010 |
20100075829 | Stripping Process with Multi-Sloped Baffles - A process for stripping gases from catalyst material in which catalyst travels down baffles at a first acute angle and then at a second acute angle on the same baffle. Traveling down the baffle at the second angle assures the catalyst will cross a downcomer channel and land on an adjacent baffle. | 03-25-2010 |
20100081562 | PROCESS FOR THE REGENERATION OF A FISCHER TROPSCH CATALYST - A process is disclosed for the regeneration of a deactivated wax covered Fischer-Tropsch catalyst, a pumpable suspension of deactivated catalyst being injected into a hot gas stream and the regenerated catalyst then being separated off from the gas stream, optionally further treated by calcination and/or reduction. | 04-01-2010 |
20100222202 | 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 gas loop. The systems and processes include a first thermocompressor that utilizes a first motive vapor and a second thermocompressor that utilizes a second motive vapor in order to provide the catalyst cooling stream to the regeneration tower. The second thermocompressor operates in parallel with the first thermocompressor. The first thermocompressor can utilize combustion air as the motive vapor. The second thermocompressor can utilize nitrogen as the motive vapor. | 09-02-2010 |
20100240524 | REGENERATING MOLECULAR SIEVE ABSORBENTS USED FOR ALCOHOL DEHYDRATION - A process for regenerating a molecular sieve absorbent bed used for dehydrating an organic solvent is disclosed. The process is illustrated by regenerating a molecular sieve bed used for dehydrating ethanol, which includes a dehydrating cycle where an ethanol/water vapor mixture is loaded onto the molecular sieve bed at a first temperature to absorb water and recover a substantially dehydrated ethanol vapor effluent. In a regeneration cycle, the bed is subjected to a temperature swing technique whereby a dried gas, such as dried CO | 09-23-2010 |
20100273640 | ADSORPTION COMPOSITION AND PROCESS FOR REMOVAL OF CO FROM MATERIAL STREAMS - Carbon monoxide is removed from streams by adsorption on an adsorption composition which comprises copper, zinc and zirconium oxides and whose copper-comprising component has a degree of reduction, expressed as weight ratio of metallic copper to the sum of metallic copper and copper oxides, calculated as CuO, of at least 45% and not more than 75%. | 10-28-2010 |
20100285948 | Catalyst Preparation and Methods of Using Such Catalysts - A process for the pre-treatment of Mo/ZSM-5 and Mo/MCM-22 catalysts is provided, which process comprises heating the catalyst at 500° C. in the presence of propane. The treated catalyst, when used in the non-oxidative dehydrogenation of methane demonstrates improved benzene yield and catalyst stability as compared to catalysts pre-treated with He, methane or H | 11-11-2010 |
20110065567 | Apparatus and Process for Isomerizing a Hydrocarbon Stream - An apparatus and process for isomerizing a hydrocarbon stream rich in a C4 hydrocarbon and/or at least one of a C5 and C6 hydrocarbon which includes a first drier and a second drier; and a reaction zone communicating with at least the first drier. The first drier operates at a first condition to dry the reactant and the second drier operates at a second condition during regeneration. The used regenerant remaining in the second drier after regeneration can (1) pass through a vent-to-flare assembly in a batch-wise manner; (2) pass through a downflow-depressure-to-low-pressure-device assembly in a batch-wise manner; (3) pass through a cross-over piping purge assembly to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation; or any combination of (1) (2) and/or (3) to minimize upsets in the reaction and fractionation zones when the second drier is placed back in operation. | 03-17-2011 |
20110190113 | CATALYST REGENERATION APPARATUS AND ASSOCIATED REGENERATION PROCESS - The present invention relates to a continuous catalyst regeneration device comprising at least one burning zone formed by at least one annular combustion zone ( | 08-04-2011 |
20110281720 | SMALL PORE MOLECULAR SIEVE SUPPORTED COPPER CATALYSTS DURABLE AGAINST LEAN/RICH AGING FOR THE REDUCTION OF NITROGEN OXIDES - A method of using a catalyst comprises exposing a catalyst to at least one reactant in a chemical process. The catalyst comprises copper and a small pore molecular sieve having a maximum ring size of eight tetrahedral atoms. The chemical process undergoes at least one period of exposure to a reducing atmosphere. The catalyst has an initial activity and the catalyst has a final activity after the at least one period of exposure to the reducing atmosphere. The final activity is within 30% of the initial activity at a temperature between 200 and 500° C. | 11-17-2011 |
20130172170 | APPARATUSES FOR STRIPPING GASEOUS HYDROCARBONS FROM PARTICULATE MATERIAL AND PROCESSES FOR THE SAME - Apparatuses and processes are provided for stripping gaseous hydrocarbons from particulate material. One process comprises the step of contacting particles that contain hydrocarbons with a stripping vapor in countercurrent flow to remove at least a portion of the hydrocarbons with the stripping vapor to form stripped particles. Contacting the particles includes advancing the particles down a sloping element of a structured packing toward a reinforcing rod that is disposed adjacent to a lower section of the sloping element. The particles are advanced down through an opening formed in the sloping element proximate the reinforcing rod. The particles are contacted with the stripping vapor that is rising up through the opening. | 07-04-2013 |
20130172171 | APPARATUSES FOR STRIPPING GASEOUS HYDROCARBONS FROM PARTICULATE MATERIAL AND PROCESSES FOR THE SAME - Apparatuses and processes are provided for stripping gaseous hydrocarbons from particulate material. One process comprises the step of contacting particles containing hydrocarbons with a stripping vapor in countercurrent flow to remove at least a portion of the hydrocarbons with the stripping vapor to form stripped particles. Contacting the particles includes advancing the particles down a sloping element of a structured packing toward a lower section of the sloping element. The particles are passed through a drainage gap formed between a pair of reinforcing rod sections that are disposed adjacent to the lower section of the sloping element. The particles are contacted with the stripping vapor that is rising up adjacent to the drainage gap. | 07-04-2013 |
20130172172 | APPARATUSES FOR STRIPPING GASEOUS HYDROCARBONS FROM PARTICULATE MATERIAL AND PROCESSES FOR THE SAME - Apparatuses and processes are provided for stripping gaseous hydrocarbons from particulate material. One process comprises the step of contacting particles containing hydrocarbons with a stripping vapor in countercurrent flow to remove at least a portion of the hydrocarbons with the stripping vapor to form stripped particles. Contacting the particles includes advancing the particles down a sloping element of a structured packing toward a reinforcing rod that is disposed along a lower channel portion of the sloping element. The particles are advanced over the reinforcing rod. The particles are contacted with the stripping vapor that is rising up adjacent to the lower channel portion. | 07-04-2013 |
20130310244 | CATALYST MIXING PROCESS AND REGENERATOR RELATING THERETO - One exemplary embodiment can be a process for mixing catalyst in a regenerator. The process can include providing a first stream of catalyst, a second stream of catalyst mixed with the first stream of catalyst, and an oxygen-containing gas to a chamber via a distributor of the regenerator. Generally, the chamber imparts a swirl to at least one of the oxygen-containing gas, the first catalyst, and the second catalyst for regenerating the catalyst. | 11-21-2013 |
20140018231 | METHOD FOR REMOVING ARSENIC COMPOUND, METHOD FOR RECYCLING NOX REMOVAL CATALYST, AND NOX REMOVAL CATALYST - Provided is a practical method for dry-separating arsenic compounds from a used NOx removal catalyst contaminated with arsenic. The method for removing arsenic compounds comprises heat-treating a NOx removal catalyst contaminated with arsenic compounds at a predetermined temperature in a reducing atmosphere while exposing the catalyst to hydrocarbon compounds (except CH | 01-16-2014 |
20140364301 | Exhaust Treatment Regeneration Control System - A system and method for controlling the regeneration of an exhaust gas particulate filter. When regeneration is initiated, an outlet temperature of an exhaust gas oxidation catalyst and an outlet temperature of the exhaust gas particulate filter are detected. As part of a closed loop non-linear temperature targeting regime, the maximum of the outlet temperature of the exhaust gas oxidation catalyst and the outlet temperature of the exhaust gas particulate filter is set as a reference temperature. A regeneration temperature target is initialized and indexed based on a profile time and the reference temperature. As part of a closed loop fuel control regime at least one hydrocarbon dosing value is determined based on an exhaust mass flow, the reference temperature, and the regeneration temperature target. | 12-11-2014 |
20150126356 | APPARATUSES FOR STRIPPING GASEOUS HYDROCARBONS FROM PARTICULATE MATERIAL AND PROCESSES FOR THE SAME - Apparatuses and processes are provided for stripping gaseous hydrocarbons from particulate material. One process comprises the step of contacting particles containing hydrocarbons with a stripping vapor in countercurrent flow to remove at least a portion of the hydrocarbons with the stripping vapor to form stripped particles. Contacting the particles includes advancing the particles down a sloping element of a structured packing toward a reinforcing rod that is disposed along a lower channel portion of the sloping element. The particles are advanced over the reinforcing rod. The particles are contacted with the stripping vapor that is rising up adjacent to the lower channel portion. | 05-07-2015 |
20150375221 | Oxidation Catalyst for a Lean Burn Internal Combustion Engine - An apparatus is disclosed. The apparatus comprises a lean-burn internal combustion engine, engine management means and an exhaust system for treating exhaust gas of the engine. The exhaust system comprises a first oxidation catalyst disposed on a first honeycomb monolith substrate. The first oxidation catalyst comprises platinum supported on a first metal oxide support comprising at least one reducible oxide, and is substantially free of alkali metals and alkaline earth metals. The engine management means is arranged, when in use, intermittently to modulate the lambda composition of the exhaust gas entering the first oxidation catalyst to a rich lambda composition. | 12-31-2015 |
20160082427 | DESULFURIZATION OF NOX STORAGE CATALYSTS - The present invention relates to the use of a particular method for the targeted desulfurization of particular nitric oxide storage catalysts (NOx storage catalysts). In particular, this invention is directed to the use of an adapted method on specifically composed storage catalysts. | 03-24-2016 |
20160175825 | PROCESS FOR CATALYST REDUCTION | 06-23-2016 |
20170232422 | Treater Regeneration | 08-17-2017 |