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7390768 |
Stabilized tin-oxide-based oxidation/reduction catalysts
The invention described herein involves a novel approach to the production of oxidation/reduction catalytic systems. The present invention serves to stabilize the tin oxide reducible metal-oxide...
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7390471 |
Apparatus and method for catalytic treatment of exhaust gases
An exhaust gas treatment apparatus ( 20 ) for reducing the concentration of NO x , HC and CO in an exhaust gas stream ( 18 ) such as produced by a gas turbine engine ( 12 ) of a power generating...
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7390469 |
Bimodal catalyst-urea SCR system for enhanced NOx conversion and durability
The present invention discloses a method for reducing NO x in exhaust gases of an internal combustion engine. The purpose of this invention is to convert engine out NO x (approximately 90% NO in...
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7364712 |
Catalyst for purifying methane-containing waste gas and method of purifying methane-containing waste gas
This invention provides a catalyst for removing hydrocarbons from a combustion gas containing methane and containing an excess of oxygen, which comprises iridium supported on zirconium oxide; and a...
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7357902 |
Process for the removal of oxygen from olefin-containing process streams
Process for the removal of oxygen from a gas mixture comprising oxygen, at least one olefin, hydrogen, carbon monoxide and optionally at least one alkyne, the ratio of oxygen:hydrogen in the gas...
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7354564 |
Partial oxidation of hydrogen sulphide
A method of conducting the partial oxidation to sulphur in at least one furnace of part of the hydrogen sulphide content of a feed gas mixture containing from 10 to 60% by volume of hydrogen...
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7347980 |
Process for treating fluorine compound-containing gas
A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and...
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7318915 |
Oxidation-reduction catalyst and its process of use
This invention relates generally to a ruthenium stabilized oxidation-reduction catalyst useful for oxidizing carbon monoxide, and volatile organic compounds, and reducing nitrogen oxide species in...
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7300640 |
Method for clarifying exhaust gas
A cleaning process of exhaust gas which includes the steps of bringing the exhaust gas containing at least one of nitrogen oxides or organic solvent into contact with a cleaning agent including...
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7285257 |
Method of removing tar-forming gases from CVD/CVI furnace effluent
Method for removing tar-forming hydrocarbons from an effluent gas mixtures from Chemical Vapor Deposition or Chemical Vapor Infiltration processes. Method includes passing at elevated temperature...
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7285247 |
Apparatus and method for operating a fuel reformer so as to purge soot therefrom
A method of operating a fuel reformer includes advancing a first air/fuel mixture having a first air-to-fuel ratio into the fuel reformer. The method further includes determining if a soot purge is...
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7211232 |
Refractory exhaust filtering method and apparatus
A method for catalytically cleaning an exhaust gas, including receiving the exhaust gas in an inlet channel, blocking the exhaust gas in the inlet channel, diffusing the exhaust gas through a...
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7208128 |
Manganese-based oxidation catalyst
A catalyst for the oxidation of volatile organic compounds and carbon monoxide comprising manganese and alumina, such catalyst having been impregnated with a phosphorus compound. The presence of...
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7166267 |
Solid solutions, applicable as catalysts, with perovskite structure comprising noble metals
Materials with a perovskite structure in form of solid solutions with general formula: A z Zr 1−x B x O 3 Where A is Ba or a rare earth element, B is Pt, Ir, Rh or Ce z is 1 when A is Ba and is...
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7119044 |
Multiple washcoats on filter substrate
An integrated multi-functional catalyst system includes a diesel particulate filter having an inlet side for receiving flow and an opposite outlet side, a substrate in the diesel particulate filter...
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7115237 |
Exhaust gas purifying method and exhaust gas purifying system
To provide an exhaust gas purifying method for purifying the exhaust gas of an internal combustion engine ( 1 ) by an exhaust gas purifying system ( 10 ) having an oxidation catalyst ( 3 a ), which...
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7097817 |
Method for treating soot-containing exhaust
A wall-flow filter ( 10 ) for an exhaust system of a combustion engine comprises: a plurality of channels ( 4,6,8 ) in honeycomb arrangement, wherein at least some of the channels ( 6 ) are plugged...
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7070746 |
Process for nitrous oxide purification
A method for purification of an oxygen contaminated nitrous oxide gas by feeding the nitrous oxide gas and a reducing agent such as hydrogen, carbon monoxide or ammonia into a de-oxidation reactor,...
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7052663 |
Combustion catalysts and processes for removing organic compounds
A process for removing an organic compound or compounds which is/are a chlorinated hydrocarbon or hydrocarbon by catalytic combustion, the process including the step of contacting the organic...
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7041264 |
Process for purifying octafluoropropane
A process for purifying octafluoropropane according to the present invention includes the step of contacting a crude octafluoropropane containing impurities with an impurity decomposing agent under...
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7041263 |
Catalyst composition for purifying exhaust gas
The present invention relates to a composite of cerium, zirconium and samarium components, a catalyst composition containing such composite and the use of the catalyst composition for the treatment...
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7033558 |
Method for eliminating traces of hydrocarbons from gas streams
The invention refers to a method for removing traces of hydrocarbons, particularly propane, from gas flows. The conversion of hydrocarbons into carbon oxides is achieved by loading suitable carrier...
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7022297 |
Method and system for purifying or cleansing a gas stream or gaseous body
A method and system for eliminating, in whole or in part, contaminants in a gas stream or gaseous body such as air or an exhaust gas or gas emission stream is provided. The method includes the...
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7014824 |
Method for purifying process waste gases
The present invention relates to a method for purifying process waste gases by introducing them into a waste gas purification system that includes a reaction chamber and by post-treating the...
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6962681 |
Methods and systems for reducing or eliminating the production of pollutants during combustion of carbon-containing fuels
Systems and apparatus for increasing combustion efficiency during combustion of a carbon-containing fuel such as a fossil fuel. The systems and apparatus utilize catalytically reactive particles...
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6921519 |
Decomposition of fluorine containing compounds
A process for the decomposition and removal of one or more fluorine containing compounds from a first gaseous mixture comprising the one or more fluorine containing compounds and water vapour,...
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6908571 |
Process and reactor for the preparation of hydrogen and carbon monoxide rich gas
Soot formation is suppressed in the preparation of hydrogen and/or carbon monoxide rich gas by arranging on at least a surface of an upper portion of a reactor a catalytic material which is active...
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6881392 |
Process for treating hydrocarbonaceous material with aluminum trihydroxide catalyst
A process for treating a hydrocarbonaceous material comprising contacting such material with catalysts made from a newly discovered phase of aluminum trihydroxide.
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6855664 |
Method for the catalytic oxidation of volatile organic compounds
A catalyst for the full oxidation of volatile organic compounds (VOC), particularly hydrocarbons, and of CO to CO 2 , comprising:
a non-stoichiometric crystalline compound conventionally...
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6846472 |
Process for treating gaseous emissions generated during production of carbon anodes in an aluminum plant
A process for treating gaseous emissions generated during the production of carbon anodes in the aluminum industry. In this process, first gaseous emissions generated during green anode preparation...
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6843973 |
Krypton and xenon recovery system
In a process for the recovery of krypton and xenon, an oxygen-enriched stream containing krypton and/or xenon and hydrocarbons is removed from an air separation unit. A substantial portion of the...
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6838065 |
Method and apparatus for treating waste gas containing PFC and/or HFC
A method for treating waste gas containing PFC and/or HFC, comprising contacting a mixture of gas waste containing PFC and/or HFC, ozone, and water with an iron oxide catalyst at a temperature...
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6833125 |
Oxidation catalysts
Oxidation catalysts for used in the full oxidation to CO 2 and H 2 O of volatile organic compounds, such as hydrocarbons, comprising mixed oxides of copper, manganese and one or more rare-earth...
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6818195 |
Combustion catalyst and process for removing organic compounds
A combustion catalyst for removing organic compounds from a gas stream containing the same and a process for removing organic compounds from the gas stream using the catalyst are disclosed. The...
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6776606 |
Method for oxidizing mixtures
A catalyst composition and method for oxidizing fuels is disclosed. The catalyst composition comprises at least one compound having one of a group III, group IIA or Lanthanide element such as, for...
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6749822 |
Process for treatment of gases from a sintering plant
Process for treatment of gases which are exhausted through a sinter bed in a sintering plant, wherein a distinction can be made between a cold zone of the sintering plant with relatively low gas...
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6749821 |
Process for the purification of inert gases
A process for the purification of an inert gas recycled from a polymerization reactor is disclosed, comprising the steps of mixing the gas with oxygen or gas containing oxygen in stoichiometric...
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6696031 |
Treatment of exhaust gas
A process for treating exhaust gas from internal combustion engines wherein the combustion exhaust gas contains HC, CO, O 2 , soot and possibly NO x . In treating the combustion exhaust gas, HC is...
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6692713 |
Process for the catalytic oxidation of carbonaceous compounds
Process for the preferential oxidation of carbon monoxide and/or CH 3 OH in a hydrogen containing process stream by contacting the process stream with a catalyst comprising gold on a support...
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6682709 |
Method for reducing NOx from exhaust gases produced by industrial processes
Gas-phase methods and systems for reducing NOx emissions and other contaminants in exhaust gases, and industrial processes using the same, are disclosed. In accordance with the present invention,...
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6673326 |
Catalytic processes for the reduction of perfluorinated compounds and hydrofluorocarbons
A process for reducing perfluorinated compounds and/or hydrofluorocarbon compounds in a sample uses a catalyst made from aluminum oxide (Al 2 O 3 ), and one or more enhancers selected from the...
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6673325 |
Incineration of waste organic aerosols
A process for treating a waste gas containing condensable organic compounds in the form of an aerosol of liquid particles, in a regenerative thermal oxidation system comprising a combustion chamber...
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6663840 |
Process for treating dioxin-containing exhaust gas and composite catalyst composition for inhibiting generation of dioxin
The present invention relates to a process for treating a dioxin-containing exhaust gas which can inhibit the generation of dioxin occurring either in the course of cooling of the exhaust gas...
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6660239 |
Method and system for treating volatile organic compounds using a catalytic oxidizer without a burner
A catalytic oxidation system and method for the treatment of volatile organic compounds in which VOC-containing gas is preheated in a heat exchanger for raising its temperature before oxidation in...
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6638432 |
Method of treating waste liquid
Disclosed is a method of removing heavy metals contained in exhaust gas which has been generated by burning a waste liquid containing the heavy metals discharged in a process of producing organic...
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6616903 |
Method and apparatus for treating the atmosphere
Method and apparatus for treating the atmosphere to lower the concentration of pollutants, such as ozone, hydrocarbons, nitrogen oxides, sulfur oxides, carbon monoxide and the like, therein in...
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6602486 |
Method for separating and treating exhaust gas of carbon fiber
A method for producing carbon fiber including the following processes: a process for obtaining fine carbon fiber by thermally decomposing an organic compound in a furnace by use of a catalyst; a...
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6579509 |
Method of cleaning of harmful gas and cleaning apparatus
Disclosed is a method for cleaning of the harmful gas, the method comprising mixing harmful gas, discharged from reaction processes using organic metal compounds as the reaction raw materials, with...
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6569393 |
Method and device for cleaning the atmosphere
Method for treating atmospheric pollutants by contacting the atmosphere with a catalyst composition or adsorptive material coated on the surface of a substrate, preferably a motor vehicle radiator,...
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6565821 |
Process for removing the fluorocompounds or fluorosulphur compounds from a stream of xenon and/or krypton by permeation
A process and a plant for removing the gaseous fluorocompounds or fluorosulphur compounds, such as CF 4 , C 2 F 6 , and SF 6 , present in a stream of xenon and/or krypton, by permeation via one or...
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