Class 502/56 - By heat

Subclass of Class 502 - Catalyst, solid sorbent, or support therefor: product or process of making
Definition: Process in which regeneration or rehabilitation is effected
No. of patents: 130
Last issue date: 05/17/2011

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Number	Title	Issue Date
7943544	Method of recycling spent flue gas denitration catalyst The present invention provides a method of recycling a spent flue gas denitration catalyst and a method of determining a washing time of the spent flue gas denitration catalyst. The method of recycling the spent flue gas denitration catalyst includes physically remo...	05/17/2011
7902101	Process for regenerating catalyst Disclosed is a process for disengaging regenerated catalyst from flue gas in a catalyst regenerator so as to avoid re-entrainment of catalyst that has settled into a bed in the catalyst regenerator using a disengaging device. A disengaging arm of the disengaging dev...	03/08/2011
7799720	Method of regenerating carbon dioxide gas absorbent A method of regenerating a carbon dioxide gas absorbent includes heating a carbon dioxide gas absorbent containing lithium silicate, which has been absorbed a carbon dioxide gas, under a reduced pressure atmosphere to release the carbon dioxide gas. ...	09/21/2010
7745366	Microwave spent catalyst decoking method The microwave spent catalyst decoking method is a method for regenerating petrochemical catalysts by removing coke deposited in the catalyst using a 2.45 GHz microwave oven. The spent catalyst is heated in air or pure oxygen in the presence of a susceptor. The susce...	06/29/2010
7737068	Conversion of fine catalyst into coke-like material A process for recovering catalytic metals from fine catalyst slurried in heavy oil comprises pyrolizing fine catalyst slurried in heavy oil to provide one or more lighter oil products and a coke-like material and recovering catalytic metals from the coke-like materi...	06/15/2010
7696120	Method of restoring catalytic activity to a spent hydroprocessing catalyst, a spent hydroprocessing catalyst having restored catalytic activity, and a hydroprocessing process Disclosed is method for restoring catalytic activity to a hydroprocessing catalyst that has become spent due to its use or to the deposition of carbon thereon. The method includes a carbon reduction step whereby carbon is removed from the spent hydroprocessing catal...	04/13/2010
7442232	Adsorbents, methods of preparation, and methods of use thereof Adsorbents and methods of use thereof are provided. One representative, among others, includes an adsorbent having an alkali metal promoted, mixed trivalent layered double hydroxide (LDH) composition. When the mixed trivalent layered double hydroxide (LDH) compositi...	10/28/2008
7442846	Process for the regeneration of catalysts for steam cracking Process for the regeneration of exhausted catalysts, containing one or more calcium aluminates, for steam cracking reactions, comprising treating said exhausted catalysts in a stream of water vapour at a temperature ranging from 700 to 950° C., preferably from 720 ...	10/28/2008
7271116	Catalyst The present invention provides a catalyst containing titanium in bonded form, non-crystalline silicon dioxide and at least one crystalline silicate phase which has a zeolite structure, wherein the non-crystalline silicon dioxide is applied to at least one of the cry...	09/18/2007
7262147	Method for preparing dehydrocyclodimerization catalyst This invention relates to a process for reactivating a dehydrocyclodimerization catalyst. Dehydrocyclodimerization catalysts which contain an aluminum phosphate binder can be deactivated when they are exposed to hydrogen at temperatures above 500° C. The instant pr...	08/28/2007
7241527	Method and apparatus for facilitating a chemical reaction A method of facilitating a chemical reaction includes raising a temperature of a protective layer covering a catalyst in the presence of a chemical solution. ...	07/10/2007
7199069	Method for destruction of organic compounds by co-oxidation with activated carbon A method for oxidizing carbon adsorbable organic compounds in a controlled manner within a bed of activated carbon. The bed of activated carbon is exposed to a source of molecular oxygen, such as air, and is controlled within a temperature range whereby the molecula...	04/03/2007
7094935	Adsorbent for purifying perfluorocarbon, process for producing same, high purity octafluoropropane and octafluorocyclobutane, and use thereof To provide a purification adsorbent capable of effectively removing impurities contained in a perfluorocarbon and obtaining a perfluorocarbon reduced in the impurity content to 1 ppm by mass or less; a process for producing the adsorbent; high-purity octafluoropropa...	08/22/2006
7018447	Method of cleaning a rotary concentrator A method of cleaning the adsorbent media of a rotary concentrator in-situ while maintaining operation of the concentrator, including directing washing liquid into the sectors in the desorb plenum, then rotating the sectors one full revolution plus at least one secto...	03/28/2006
7014737	Method of purifying nanotubes and nanofibers using electromagnetic radiation Disclosed are methods of purifying mixtures comprising nanofibers and/or nanotubes and residual catalyst particles that are covered by outer layers of the nanotube or nanofiber material. The mixtures are exposed to electromagnetic radiation, which induces localized ...	03/21/2006
6995217	Processes for transitioning between metallocene and Ziegler-Natta polymerization catalysts Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning from olefin polymerizations utilizing metallocene catalyst systems to olefin po...	02/07/2006
6995216	Process for manufacturing single-site polyolefins A dual olefin polymerization process is disclosed. The process uses a bridged indenoindolyl ligand-containing Group 4 transition metal complex and an activator. It is carried out in multiple stages or in multiple reactors. The same complex and the same activator are...	02/07/2006
6949488	Fischer-Tropsch catalyst regeneration Methods and apparatus for providing the heat required to maintain the desired temperature for catalyst regeneration. The catalyst is heated by contacting a reactant gas mixture with the catalyst in order to initiate an exothermic reaction and, once the desired tempe...	09/27/2005
6949612	Processes for transitioning between metallocene and Ziegler-Natta polymerization catalysts Processes for transitioning among polymerization catalyst systems, preferably catalyst systems that are incompatible with each other. In particular, the processes relate to transitioning from olefin polymerizations utilizing metallocene catalyst systems to olefin po...	09/27/2005
6942719	Methods and systems for pressure swing regeneration for hydrogen generation Methods and systems for pressure swing absorption for hydrogen generation are presented. In one embodiment, a method includes absorbing at least one oxide of carbon with a pressure swing absorber from a steam reformation of methane. The steam reformation may occur a...	09/13/2005
6878471	Process for the regeneration of reforming catalysts The present invention relates to methods for the regeneration of catalytic reactors. In particular it relates to methods for regenerating a fuel-processing catalyst while it is still being used to supply hydrogen to a fuel cell. The temperature of the catalyst may b...	04/12/2005
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
6858761	Process for preserving resin catalyst for addition reaction of alkylene oxide and utilization of this process The present invention provides a process and its utilization in a process comprising the step of carrying out an addition reaction of an alkylene oxide to an addition-receiving substance in the presence of a resin catalyst, thereby producing the addition reaction pr...	02/22/2005
6811578	Fuel reforming apparatus and method of controlling same In a fuel reforming apparatus having a reformer for reforming a raw fuel containing a hydrocarbon-containing compound so as to produce a hydrogen-rich fuel gas for use in a fuel cell, a carbon removal process for removing carbon deposited on a reforming catalyst con...	11/02/2004
6713423	Method for reactivating activated carbon and activating carbon The present invention generally relates to a method of thermally reactivating activated carbon via a two-step process: steam followed by pyrolysis; whereby the steam is preferably deoxygenated. Activated carbons reactivated by this method resemble their virgin count...	03/30/2004
6710002	Method for regenerating a zeolitic catalyst A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at fro...	03/23/2004
6683015	Method for reactivating a catalyst composition The present invention is directed to a method for reactivating a deactivated carbonylation catalyst composition previously used in a carbonylation reaction involving an aromatic hydroxy compound, carbon monoxide and oxygen, so that the re-activated cataly...	01/27/2004
6680270	Regeneration of catalysts used in the manufacture of bisphenols A method for regenerating deactivated sulfonated cation exchange catalysts comprises washing the deactivated catalyst with phenol-water mixtures comprising about 5-20 wt. % of water in phenol at a temperature of about 70-95° C....	01/20/2004
6518441	Method for oxidizing an organic compound containing at least one C-C double bond A process for oxidizing an organic compound having at least one C--C double bond or a mixture of two or more thereof comprises the following steps: (I) preparing a hydroperoxide, (II) reacting an organic compound having at least one C--C double bond or a mixtu...	02/11/2003
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
6451173	Separator system An improved apparatus useful in a process for separating a liquid stream (which can be an HF catalyst mixture) having a first liquid component (which can be HF), a second liquid component (which can be light ASO) and a third liquid component (which can be...	09/17/2002
6387836	Method for renewed activation of honeycomb-shaped catalyst elements for denitrating flue gases The invention relates to a method for renewed activation of honeycomb-shaped catalyst elements for denitrating flue gases from fossil fuel-fired boiler plants, specially coal-fired boiler plants in large power stations. According to the invention, each ca...	05/14/2002
6383965	Method of regenerating a molecular sieve catalyst A process for regenerating spent molecular sieve catalysts from a fluidized catalytic cracking unit in an oil refinery with high temperature flue gas from a second group of cyclones with the spent catalyst in a first riser regenerator to form a mixture of...	05/07/2002
6380119	Method for regenerating a zeolitic catalyst A process for regenerating a zeolite catalyst comprises the following stages: (I) Heating a partially or completely deactivated catalyst to 250-600° C. in an atmosphere which contains less than 2% by volume of oxygen, (II) treating the catalyst at from 2...	04/30/2002
6362122	Regeneration of spent zeolite compositions A process for regenerating spent zeolite composites. The process involves contacting the composite, either as a shaped article or a fine powder, with a caustic solution, e.g., sodium hydroxide at treating condition. Once the contacting is completed, the c...	03/26/2002
6315816	Adsorbents, method for the preparation and method for the separation of unsaturated hydrocarbons for gas mixtures A group of solid adsorbents in the form of powder, granules or pellets having improved adsorptive capacity and selectivity for ethylene and/or propylene is disclosed. These adsorbents comprise (a) a silver compound and (b) a bentonite clay support bulk of...	11/13/2001
6232495	Methods for treating cobalt catalyst in oxidation mixtures resulting from oxidation of hydrocarbons to dibasic acids This invention relates to methods and reactor devices for controlling the oxidation of hydrocarbons to dibasic acids, in the presence of a cobalt catalyst and a monobasic acid, such as acetic acid, by treating the catalyst from the reaction mixture, outsi...	05/15/2001
6217749	Process for hydrotreating a hydrocarbon feedstock and apparatus for carrying out same A process for hydrotreating a hydrocarbon feedstock (1) involving the use of at least one hydrotreatment, particularly hydrodesulfurization, reactor (2) and a fractionation unit (3), which latter contains two distinct injection zones (4, 5) for the hydroc...	04/17/2001
6169050	Process for regeneration of catalysts of titanium silicalite type The invention relates to a process for the regeneration of a catalyst of titanium silicalite type, used in particular in reactions for the oxidation of saturated hydrocarbons or for the epoxidation of olefins, by heat treatment under a gas stream....	01/02/2001
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

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Class 502/56 - By heat