Class 502/27 - Using acid

Subclass of Class 502 - Catalyst, solid sorbent, or support therefor: product or process of making
Definition: Process in which a proton donor is utilized.
No. of applications: 19
Last issue date: 03/01/2012

Application No.	Application Title	Issue Date
20120053046	METHOD FOR TREATING SCR CATALYSTS HAVING ACCUMULATED IRON COMPOUNDS The present disclosure relates to methods for treating deactivated SCR catalysts having an increased SO₂/SO₃conversion rate as a result of the accumulation of one or more iron compounds. The methods are characterized in that the catalysts are trea...	03/01/2012
20120040821	PROCESS FOR IN-SITU CLEANING OF DRINKING WATER FILTRATION MEDIA The present invention provides a process to clean water filtration media in a filtration bed. The process includes applying a granular cleaner to the water filtration media and applying an activator to the water filtration media. This causes a chemical reaction between ...	02/16/2012
20120004091	HYDROPROCESSING CATALYSTS AND METHODS FOR MAKING THEREOF A method to prepare an improved catalyst feed to a system to upgrade heavy oil. The method comprises: providing a spent catalyst that has been used in a hydroprocessing operation has with a solid content ranging from 5 to 50 wt. % in soluble hydrocarbons and having less...	01/05/2012
20110143917	PROCESS FOR REGENERATING A CATALYST A process for regenerating one or more deactivated cobalt comprising Fischer-Tropsch catalyst particle(s), comprising the steps of: (i) oxidising the catalyst particle(s) at a temperature between 20 and 400° C.; (ii) treating the catalyst particle(s) for more than 5 mi...	06/16/2011
20110015056	METHOD FOR REMOVING A CATALYST INHIBITOR FROM A SUBSTRATE This invention is directed to a process for removing a catalyst inhibitor from a substrate or catalytic converter containing at least one nitrogen oxide (NO_x) catalyst using a phosphoric acid composition. The process is particularly suited for removing the ca...	01/20/2011
20110008238	REGENERATION OF HYDROGENATION CATALYSTS BASED ON A PLATINUM METAL A process for regenerating hydrogenation catalysts based on a platinum metal, where the hydrogenation catalysts based on a platinum metal are thermally regenerated at temperatures of from 50 to 600° C....	01/13/2011
20100323879	METHOD FOR REGENERATING PALLADIUM-CONTAINING METAL SUPPORTED CATALYST, PALLADIUM-CONTAINING METAL SUPPORTED CATALYST AND METHOD FOR PRODUCING THE SAME Disclosed is a method for regenerating a palladium-containing metal supported catalyst which has been used for production of an α,β-unsaturated carboxylic acid from an olefin or an α,β-unsaturated aldehyde. Specifically disclosed is a method for regenerating a palla...	12/23/2010
20100305365	REGENERATION OF ACIDIC ION EXCHANGERS The invention relates to a method for regenerating acidic cation exchangers, which are used as catalysts in the reaction of phenols with aldehydes or ketones to give bisphenols, in particular to give bisphenol A, with acids, with the proviso that, in the method accordin...	12/02/2010
20100160146	PROCESS FOR REGENERATING A CATALYST A process for regenerating one or more deactivated cobalt comprising Fischer-Tropsch catalyst particle(s) in situ in a reactor tube, said process comprising the steps of: (i) oxidising the catalyst particle(s) at a temperature between 20 and 400° C.; (ii) treating the ...	06/24/2010
20100093517	METHOD OF REGENERATING USED CATALYST [Problem] Provided is a method for regenerating a catalyst, the method decreasing the SO₂oxidation rate, which has been increased by Fe and V compounds, of a spent denitration catalyst to an extremely low level, and improves the oxidation activity of the cat...	04/15/2010
20090291823	METHOD FOR REGENERATION IRON-LOADED DENOX CATALYSTS The invention relates to a method for regenerating denox catalysts having an increased SO₂/SO₃conversion rate as a result of the cumulation of iron compounds, and is characterized in that the catalysts are treated with an essentially aqueous acid ...	11/26/2009
20090247392	IN-SITU REGENERATION OF A CATALYST MASKED BY CALCIUM SULFATE An in-situ method for regenerating a deactivated catalyst removes a calcium sulfate layer masking active catalyst sites. A reducing agent converts the calcium sulfate to calcium oxide, which is then removed, by reintrainment into the flue gas steam using soot blowers or...	10/01/2009
20080220966	Denitrification catalyst regeneration method A denitrification catalyst regeneration method comprises heat-treating a used denitrification catalyst, then cleaning the denitrification catalyst with an aqueous solution of oxalic acid, and then finish washing the denitrification catalyst with water to regenerate the ...	09/11/2008
20070183951	Method for recovering noble metals from metallic carrier catalytic device This invention provides a method for efficiently separating and recovering a wash coat which supports noble metal-containing catalytic component from a metallic carrier of a spent metallic carrier catalytic device for such purposes as the purification of exhaust gas fro...	08/09/2007
20070167309	PROCESS FOR REGENERATING A SPENT SORBENT A method and apparatus is provided for regenerating a sorbent that has been poisoned by components derived from flue gas. The sorbent is treated with an agent to remove the poisoning components and introduce a promoting agent into the sorbent. The method and apparatus c...	07/19/2007
20070032373	Method of regenerating deteriorated catalyst The invention is to provide a method for regenerating a deteriorated denitration catalyst by an easy and simple procedure. A catalyst that is used for reduction removal of NO_xcontained in a exhaust gas by using ammonia as a reducing agent and has been deteri...	02/08/2007
20060148639	Method for regenerating iron-loaded denox catalysts The invention relates to a method for regenerating DeNOx catalysts having an increased SO₂/SO₃conversion rate as a result of the cumulation of iron compounds, and is characterized in that the catalysts are treated with an essentially aqueous acid ...	07/06/2006
20060094587	Method of regenerating honeycomb type SCR catalyst by air lift loop reactor Provided is a method of regenerating a honeycomb type SCR catalyst which is used in selective catalytic reduction (SCR), comprising treating a waste honeycomb type SCR catalyst used in an industrial boiler with a mixed solution containing 0.1 M to 1.0 M H₂SO<...	05/04/2006
20050192176	Denitrification catalyst regeneration method A denitrification catalyst regeneration method comprises heat-treating a used denitrification catalyst, then cleaning the denitrification catalyst with an aqueous solution of oxalic acid, and then finish washing the denitrification catalyst with water to regenerate the ...	09/01/2005

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Class 502/27 - Using acid