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| Number | Title | Issue Date |
| 7368409 | Regeneration method of heterogeneous catalysts and adsorbents A process for regenerating a palladium catalyst from a catalytic reaction where the catalyst is contaminated with at least carbon. The regenerating is conducted prior to any heating step under oxidizing conditions in the regenerating section. The regenerating involv... | 05/06/2008 |
| 7361701 | Aliphatic polyester composition, a molded article thereof and a method for controlling biodegradation rate using the same composition A biodegradable plastic composition which can be stably adjusted in biodegradation rate, and has greatly improved resistance to hydrolysis and weather, in particular the former, and durability resulting from the improved resistances; a molded article thereof; and a ... | 04/22/2008 |
| 7312173 | Regeneration method with efficient oxygen utilization This invention relates to regeneration of coked catalyst by combustion so that the catalyst can be reused in a hydrocarbon conversion reaction. The completion of coke burn is generally measured with a combination of temperature or change in oxygen concentration. Dro... | 12/25/2007 |
| 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 zone comprising a combustion stage of the coke deposited on the catalyst... | 11/06/2007 |
| 7182918 | Desulfurization process A hydrocarbon desulfurization system that circulates fluidizable solid particles through a fluidized bed reactor, a fluidized bed regenerator, and a fluidized bed reducer to thereby provide for substantially continuous desulfurization of a hydrocarbon-containing flu... | 02/27/2007 |
| 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, oxychlorination zone, and calcination zone in the regenerator, wherein ... | 05/16/2006 |
| 7030055 | NOreduction compositions for use in FCC processes Compositions for reduction of gas phase reduced nitrogen species and NOx generated during a partial or incomplete combustion catalytic cracking process, preferably, a fluid catalytic cracking process, are disclosed. The compositions comprise (i) an acidic... | 04/18/2006 |
| 6838487 | Method and apparatus for regenerating an iron-based Fischer-Tropsch catalyst Solvent extraction is used to remove wax and contaminants from an iron-based Fischer-Tropsch catalyst in a natural circulation continuous-flow system. The wax-free catalyst is then subjected to controlled oxidation to convert the iron to its initial oxidized state, ... | 01/04/2005 |
| 6827908 | Standpipe inlet for enhancing particulate solids circulation for petrochemical and other processes In a fluid catalytic cracking (FCC) unit, a regenerator, a stripper or a withdrawal well connecting to either of the vessels, includes a standpipe for circulating catalyst from one vessel to another, the standpipe having an inlet design which reduces gas entrainment... | 12/07/2004 |
| 6680030 | Stripping process with horizontal baffles A baffle-style stripping arrangement for an FCC process having substantially horizontal stripping baffles is disclosed. The stripping baffles comprise a perforated section and a downcomer section which generates transverse movement of catalyst across the ... | 01/20/2004 |
| 6558531 | Method for maintaining heat balance in a fluidized bed catalytic cracking unit The invention relates to a process for maintaining heat balance in a fluidized bed catalytic cracking unit. More specifically, the invention relates to a combustion control method capable of maintaining or restoring heat balance by conducting, under appro... | 05/06/2003 |
| 6239055 | 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 or moving bed, for example a catalyst for reforming or for aromatic compound production, including a step for monitoring and controlling combustion completion which is carried out aft... | 05/29/2001 |
| 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 zone C, whereby this process operates in a partial-regenera... | 11/14/2000 |
| 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) steps, in which at least one chlorinating agent (conduit 1... | 10/17/2000 |
| 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 halogen. The process includes a combustion step in which th... | 08/15/2000 |
| 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 combustion, oxychlorination and calcining steps, in which at least ... | 04/11/2000 |
| 5958816 | Method of presulfiding and passivating a hydrocarbon conversion catalyst This invention relates to a method for sulfiding hydrocarbon conversion catalysts, e.g., hydrotreating catalysts comprising at least one metal sulfide and passivating said sulfided catalyst. The catalysts which may be treated by the method of the present ... | 09/28/1999 |
| 5858207 | FCC process with combined regenerator stripper and catalyst blending An FCC arrangement uses a regenerator stripper vessel for removing CO and light hydrocarbons upstream of the regeneration zone that can operate with backmix addition of regenerated catalyst directly from the regeneration zone. The regenerator stripping ve... | 01/12/1999 |
| 5854162 | Offsite regeneration process for a catalyst containing at least one precious metal The invention concerns a process for the regeneration of a used hydrocarbon treatment catalyst, preferably a reforming catalyst, containing at least one precious metal preferably platinum, optionally at least one additional metal selected from the group f... | 12/29/1998 |
| 5120691 | Process for regulating or checking the thermal level of a pulverulent solid incorporating a heat exchanger with fluidized bed compartments A process and apparatus for the heat regulation of fluidized or fluid catalyst beds are described, the apparatus having a fluid bed heat exchanger. According to the invention, a pulverulent solid is made to flow essentially from the base of an enclosure (... | 06/09/1992 |
| 4973780 | Alkylation of benzene in a moving bed An improved process for the alkylation of benzene in the presence of an alkylation catalyst. The catalyst bed may be caused to move in a direction countercurrent to the movement of the benzene and olefin, or a portion of the catalyst bed is periodically r... | 11/27/1990 |
| 4637266 | Process for sampling particulate matter passing from one treatment zone to another Process for sampling particulate matter in a downwardly movable bed thereof which is successively contacted by two different process gases, the second of which is moving upwardly, in such a manner that the particulate matter sampled will be fully represen... | 01/20/1987 |
| 4621069 | Continuous process for catalyst regeneration by staged burnoff of carbon and sulfur compounds Used catalyst containing carbon and sulfur deposits is continuously regenerated by staged burnoff of the carbon and sulfur using a multiple zone treatment vessel containing thin beds of catalyst. The catalyst is exposed to successively increased temperatu... | 11/04/1986 |
| 4600700 | Regeneration of platinum-containing zeolite catalysts which includes oxidation of coke in the presence of water A process is described for regenerating a coke-deactivated platinum-containing zeolite catalyst material, which includes oxidizing the deactivated catalyst material in the presence of water under conditions which do not cause significant agglomeration of ... | 07/15/1986 |
| 4473658 | Moving bed catalytic cracking process with platinum group metal or rhenium supported directly on the cracking catalyst An improved moving bed continuous catalytic cracking process for cracking hydrocarbon feedstocks, such as gas oil, in the absence of added hydrogen, which includes the use of a minute amount of dispersed platinum supported directly on a cracking catalyst.... | 09/25/1984 |
| 4425301 | Fluid catalyst regeneration apparatus A catalyst regeneration process and apparatus for the oxidative removal of coke from a coke contaminated fluid catalyst. The process comprises a high temperature coke combustion zone, a catalyst disengagement zone and an external heat removal zone. A mixt... | 01/10/1984 |
| 4403909 | Method for discharging catalyst particles from a moving bed system at a substantially steady flow rate A method for discharging a periodic flow of a measured volume of hot regenerated catalyst particles from a moving bed regeneration system into a catalyst hopper at a substantially steady particle flow rate thus eliminating pressure surges in the hopper.... | 09/13/1983 |
| 4347156 | System and process for reactivating carbon There is provided a system for reactivating wet, spent carbon including a drying device to heat the carbon to drive moisture from the carbon as steam. A multiple-hearth furnace receives the carbon from the drying device, and the carbon is baked and reacti... | 08/31/1982 |
| 4252632 | Catalyst and process for conversion of hydrocarbons An improved process for converting hydrocarbons using a catalyst which is periodically regenerated to remove carbonaceous deposits, the catalyst being comprised of a mixture containing, as a major component, solid particles capable of promoting hydrocarbo... | 02/24/1981 |
| 4208303 | Process for regenerating iron-antimony oxide containing catalyst A process for regenerating a deteriorated iron-antimony oxide containing catalyst comprising as essential components (i) iron, (ii) antimony, (iii) at least one element selected from the group consisting of vanadium, molybdenum and tungsten and (iv) tellu... | 06/17/1980 |
| 4155877 | Catalyst combustion regeneration process in downwardly moving bed with additional outlet responsive to gas flows Catalyst regeneration process and apparatus wherein air introduced to a midsection of a downwardly-moving mass of catalyst particles is taken off at the top and at the bottom of said bed through provided outlets and a third outlet is provided at the botto... | 05/22/1979 |
