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| Number | Title | Issue Date |
| 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 zone; and ... | 12/06/2011 |
| 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 catalyst composition comprises at least one salt comprising a Group 4-13 met... | 01/04/2011 |
| 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 hydrocarbon feedstock that comprises aromatic compounds with eight ca... | 07/29/2008 |
| 7347930 | Process for cracking hydrocarbon oils A novel process for cracking olefins including contacting a hydrocarbon oil with a catalyst in a riser reactor having multiple reaction zones under cracking reaction conditions; separating reaction products and the catalyst; regenerating at least a part of spent cat... | 03/25/2008 |
| 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 |
| 7247598 | Nano-scale magnetic solid base catalyst and its preparation method This invention describes a nano-scale magnetic solid base catalyst and its preparation method. The catalyst involves a magnetic core coated with a solid base active layer. The synthesis of the nano-scale magnetic cores was first carried out using a rapid nucleation ... | 07/24/2007 |
| 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 circulating stream to return the halogen-containing materials to a regeneration... | 05/29/2007 |
| 7115538 | Ethylbenzene conversion catalyst and process An ethylbenzene conversion catalyst is described which comprises a molecular sieve and a hydrogenation metal, wherein the catalyst exhibits a benzene hydrogenation activity at 100° C. of less than about 100 and a metal dispersion, as measured by hydrogen chemisorpt... | 10/03/2006 |
| 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 |
| 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 solution of zinc chloride. The problems include environmental destruction c... | 01/31/2006 |
| 6924378 | Method for production of aziridines and N-vinylamides In the production of aziridines or N-vinyl amides respectively from an alkanolamine or an alkanolamide by the known method comprising a reaction step, a collecting step and/or a condensation step, a purifying step, and a recovering step, this invention is directed t... | 08/02/2005 |
| 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 with I2 or Br2. The Pd catalyst can then be us... | 07/26/2005 |
| 6916756 | Regeneration of a dehydrogenation catalyst A process for regenerating a dehydrogenation catalyst comprises the steps (a)-(f): (a) flushing with inert gas at a pressure of from 0.5 to 2.0 bar and a gas hourly velocity of from 1000 to 50 000 h−1; (b) passing an oxygen-con... | 07/12/2005 |
| 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. ... | 04/19/2005 |
| 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 impregnation with a titanium source, and then calcining the impregnated... | 03/29/2005 |
| 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 beds of adsorbent to return the halogen-containing materials to a circul... | 09/14/2004 |
| 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 beds of adsorbent to maintain the halogen-containing materials within a ... | 08/31/2004 |
| 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. ... | 08/24/2004 |
| 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 process involves contacting a catalyst composition with a first treati... | 05/11/2004 |
| 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 by: a) continuously flowing a reducing gas over the catalyst ... | 07/15/2003 |
| 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 system comprising a reactive metal with a getter to produce a m... | 04/22/2003 |
| 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 chlorine-containing compound into a reactor of the multiple reactor sy... | 10/29/2002 |
| 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 stream contacts spent catalyst particles at regeneration conditi... | 10/08/2002 |
| 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 movable metal, and fixating the movable metal, the getter,... | 07/16/2002 |
| 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 or liquid is brought into contact with a composition obtaine... | 07/02/2002 |
| 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 solid with a granulometry which is different from that of the... | 06/11/2002 |
| 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 chlorine-containing compound into a reactor of the multiple reactor sy... | 09/25/2001 |
| 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 reactor system while introducing a nonmetallic chlorine-containi... | 09/18/2001 |
| 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 recycle gas. Some of the now-dried recycle gas recirculates ... | 09/18/2001 |
| 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 stream contacts spent catalyst particles at regeneration conditi... | 11/28/2000 |
| 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 |
| 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 recycle gas. Some of the now-dried recycle gas recirculates ... | 09/26/2000 |
| 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 the presence of the halogen. By precombusting the halogen-c... | 09/19/2000 |
| 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 passed to a sorption zone which contains catalyst and which is... | 09/12/2000 |
| 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 diminished. It has been found that maintenance of any iron... | 08/29/2000 |
| 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 diminished. It has been found that maintenance of any iron... | 03/07/2000 |
| 6034018 | 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 stream contacts spent catalyst particles at regeneration conditi... | 03/07/2000 |
| 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 treated with an oxidizing agent such as chlorine, a halogen fluo... | 03/07/2000 |
| 5965473 | Cyclic catalytic hydrocarbon conversion process with reduced chloride emissions A method is disclosed for recovering chlorine-containing species from the outlet gas of a hydrocarbon conversion process with a cyclic regeneration operation. The outlet gas from an off-stream catalyst bed in which regeneration is occurring is passed to a... | 10/12/1999 |
| 5880049 | Regeneration of catalysts for gas phase fluorination In order to regenerate the activity of a catalyst for gas phase fluorination the spent catalyst is treated with chlorine and hydrogen fluoride, at a temperature of between 250° and 450° C.... | 03/09/1999 |
