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US20150118115 TRANSITION METAL/ZEOLITE SCR CATALYSTS  
A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one...
US20150118114 TRANSITION METAL/ZEOLITE SCR CATALYSTS  
A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one...
US20110182790 TRANSITION METAL-CONTAINING ALUMINOSILICATE ZEOLITE  
A synthetic alumino silicate zeolite catalyst containing at least one catalytically active transition metal selected from the group consisting of Cu, Fe, Hf, La, Au, In, V, lanthanides and Group...
US20140093442 Dual Function Catalytic Filter  
A dual function catalytic filter is provided having a soot filter with an inlet and an outlet, a soot oxidation layer on the inlet, wherein the soot oxidation layer comprises a soot oxidation...
US20050129600 Product and process to reduce mercury emission  
In a method to decrease emission of mercury, a factor is selected to control a combustion process to generate a flue gas comprising fly ash with enhanced unburned carbon; the combustion process is...
US20160129431 Copper Containing Levyne Molecular Sieve For Selective Reduction Of NOx  
Aspects of the present invention relates to a copper containing Levyne molecular sieve having a silica to alumina mole ratio less than 30 and a Cu:Al atomic ratio less than 0.45, wherein the...
US20050271568 Method and apparatus for treating a waste gas containing fluorine-containing compounds  
An apparatus for treatment of a waste gas, containing fluorine-containing compounds, comprises: a solids treating device for separating solids from the waste gas; an addition device for adding H2...
US20100290963 TRANSITION METAL / ZEOLITE SCR CATALYSTS  
A method of converting nitrogen oxides in a gas to nitrogen by contacting the nitrogen oxides with a nitrogenous reducing agent in the presence of a zeolite catalyst containing at least one...
US20160096169 Molecular Sieve Catalyst For Treating Exhaust Gas  
Provided is novel catalyst for treating NOx in an exhaust gas, wherein the catalyst comprises a metal promoted high SAR zeolite having an AFX framework.
US20100178224 LEAN NOx TRAP/CONVERSION CATALYST  
A process and composition for converting nitrogen oxides present in exhaust gases produced by an internal combustion engine utilize cobalt and at least one alkali metal or alkaline earth metal as...
US20150132188 COMBINED PARTICULATE FILTER AND HYDROCARBON TRAP  
A combined particulate filter and hydrocarbon trap for use in collecting particulate matter and trapping hydrocarbons present in exhaust gas is disclosed. The particulate filter comprises a porous...
US20050031513 Gasoline engine with an exhaust system for combusting particulate matter  
A gasoline engine having an exhaust system comprises means for trapping particulate matter (PM) from the exhaust gas and a catalyst for catalysing the oxidation of the PM by carbon dioxide and/or...
US20100166628 CATALYST FOR REDUCING NITROGEN-CONTAINING POLLUTANTS FROM THE EXHAUST GASES OF DIESEL ENGINES  
In exhaust gas purification units for decreasing nitrogen oxides in lean-burn exhaust gas of internal combustion engines by selective catalytic reduction by means of ammonia, introduction of...
US20060067860 Construction for an engine exhaust system component  
The present disclosure relates to a double-wall construction for an engine exhaust conduit. The construction includes an inner conduit and an outer conduit surrounding the inner conduit. An...
US20050008546 Exhaust gas treatment system  
In an exhaust gas treatment system, dust in a high temperature exhaust gas is caught by a high temperature dry electrostatic precipitator, a nitrogen oxide NO2 in the exhaust gas is removed by...
US20130095013 EXHAUST GAS PURIFICATION CATALYST APPARATUS USING SELECTIVE REDUCTION CATALYST, EXHAUST GAS PURIFICATION METHOD, AND DIESEL AUTOMOBILE MOUNTED WITH EXHAUST GAS PURIFICATION CATALYST APPARATUS  
An exhaust gas purification catalyst apparatus is arranged with an oxidation catalyst (DOC) having a noble metal component for oxidizing a nitrogen oxide (NO) in exhaust gas discharged from a...
US20050063880 Evaporative emissions control device with internal seals  
A hydrocarbon scrubber comprises: a monolith; a seal disposed concentrically around an end of the monolith, wherein the seal comprises an inner surface having a diameter equal to or less than an...
US20150118119 THREE-WAY CATALYST AND ITS USE IN EXHAUST SYSTEMS  
A three-way catalyst is disclosed. The three-way catalyst comprises a silver-containing extruded zeolite substrate and a catalyst layer disposed on the silver-containing extruded zeolite...
US20050175524 Method and apparatus for treating exhaust gas  
The present invention relates to a method and apparatus for treating an exhaust gas containing a fluorine compound. A method according to the present invention includes heating the exhaust gas in...
US20080131345 Multi-bed selective catalytic reduction system and method for reducing nitrogen oxides emissions  
Systems and methods of removing at least nitrogen oxides from an exhaust fluid generally include introducing a first reducing agent and a hydrogen gas co-reductant agent into the exhaust fluid...
US20120121487 ELECTRONIC SYSTEM WITH VENTILATION PATH THROUGH INLET-POSITIONED EHD AIR MOVER, OVER OZONE REDUCING SURFACES, AND OUT THROUGH OUTLET-POSITIONED HEAT EXCHANGER  
An electronic system enclosure houses a plurality of electronic components together presenting one or more surfaces coated with ozone reducing material. An EHD air mover positioned remote from an...
US20110052454 EXHAUST GAS PURIFICATION APPARATUS  
The exhaust gas purification apparatus includes an oxidation catalyst, a first selective catalytic reduction catalyst, a second selective catalytic reduction catalyst and a urea water supply...
US20050084434 Scrubbing systems and methods for coal fired combustion units  
Systems and methods for removing toxic emissions from flue gas of coal fired combustions units can be achieved. Decreasing nitrogen oxide and sulfur emissions from a coal fired circulating...
US20080008629 Arrangement for Reducing Nitrogen Oxides in Exhaust Gases  
An arrangement and method for reducing the nitrogen oxide content in the exhaust gas of an internal combustion engine with the aid of ammonia and/or ammonia-releasing reduction agents, whereby...
US20100150790 Catalyzing Lean NOx Filter and Method of Using Same  
A NOx trapping filter is provided for use in emission control systems, for example, on the exhaust gas from an internal combustion engine. The NOx trapping filter has a substrate constructed using...
US20050025689 Flue gas desulfurization apparatus, flue gas desulfurization system, and method for operating flue gas desulfurization apparatus  
The invention provides a flue gas desulfurization apparatus includes at least one activated carbon fiber board 20 provided in a catalyst unit 6, the board being formed by alternatingly juxtaposing...
US20150258496 Hybrid PGM-ZPGM TWC Exhaust Treatment Systems  
Hybrid PGM-ZPGM three-way catalyst (TWC) exhaust treatment systems are disclosed. The hybrid PGM-ZPGM TWC systems include a PGM close-coupled catalytic converter followed by an underfloor...
US20090035194 Exhaust treatment system with an oxidation device for NO2 control  
An exhaust treatment system includes an oxidation device having a plurality of channels through which a flow of exhaust flows. A first portion of the channels of the oxidation device are coated...
US20080317652 Emission control system internal to a boiler  
This invention is an emission control system wherein the boiler hosts a reactor which contains one or more catalysts for the purpose of reducing NOx and/or CO in the emissions. The reactor...
US20100290957 EXHAUST GAS PURIFYING SYSTEM  
An exhaust gas purifying system includes an exhaust passage, an oxidation catalyst, a selective catalytic reduction catalyst, a urea water supply device, a first heating mechanism and a...
US20160166990 CLOSE-COUPLED SCR SYSTEM  
A system for treating exhaust gases from a combustion engine and a method for using the same results in improved NOx conversion during engine startup. The system includes a compact SCR...
US20150367284 EXHAUST GAS TREATMENT APPARATUS  
An exhaust gas treatment apparatus which can reduce NOx (nitrogen oxide) produced as a by-product at the time of treating an exhaust gas by applying a three-way catalytic process is disclosed. The...
US20060057045 Exhaust gas decomposition processor  
A gas decomposition processor, has a wet removal device for removing solid substances contained in a processed gas; a preheating device for heating the processed gas; and a reactor for decomposing...
US20150231617 Fe-SAPO-34 CATALYST FOR USE IN NOX REDUCTION AND METHOD OF MAKING  
The system and methods described provide for an Fe-SAPO-34 catalyst in an SCR catalyst for reducing nitrogen oxides (NOx) from vehicle engine exhausts. In one example, the catalyst is formed by...
US20100143209 MICROWAVE INDUCED DESTRUCTION OF IMPURITIES FROM BIOGAS AND NITROGEN OXIDES FROM ENGINE EXHAUST  
Granulated Activated Carbon (GAC) is used to remove hydrogen sulfide (H2S) from the biogas produced in an anaerobic digester. The cleaned biogas is then combusted in a reciprocating engine. The...
US20070009400 Porous sheet and substrate having porous sheet(s) for treating exhaust gases of combustion engines  
A porous sheet for treating exhaust gases of combustion engines in open channels is disclosed. At least part of the porous sheet has a covering support having pores over 10 nm and coarse particles...
US20140090374 EXHAUST AFTERTREATMENT SYSTEM AND METHOD  
An engine exhaust gas treatment system includes an oxidation catalyst, a NOX adsorber, and a turbine. The oxidation catalyst and the NOX adsorber are fluidly connected to an exhaust manifold of...
US20110064632 Staged Catalyst System and Method of Using the Same  
One aspect of the present invention is directed to a staged catalyst system for reducing gases in the exhaust from a combustion engine. In one embodiment, the staged catalyst system includes an...
US20080250779 Method and Device for the Dosed Provision of a Reducing Agent, Especially a Solid Reducing Agent, for Exhaust Gas Systems  
A device for exhaust gas treatment includes an exhaust gas line through which an exhaust gas can flow in a flow direction, a supply for feeding a reducing agent into the exhaust gas line, a...
US20050220679 System for automobile exhaust gas purification  
The present invention relates to a system for purifying automobile exhaust gas capable of allowing an absorption catalyst to purify exhaust gases, where the exhaust gases flow through the...
US20050180898 Honeycomb filter for clarification of exhaust gas  
A honeycomb filter for purifying exhaust gases. A plurality of rectangular columnar porous ceramic members are combined with one another through a sealing material layer to constitute a ceramic...
US20140140899 CATALYSED PARTICULATE FILTER AND METHOD FOR THE PREPARATION OF A CATALYSED PARTICULATE FILTER  
Wall flow particulate filter catalysed at its inlet side with a catalyst having activity in the removal of residual hydro-carbons and carbon monoxide and catalysing at rich burn engine operation...
US20060008396 Exhaust gas post treatment arrangement  
An exhaust treatment apparatus having a body through which the exhaust of an internal combustion engine can flow, which body has regions with different flow resistances; the body has flow regions...
US20050201914 System and method for treating a flue gas stream  
The present invention is a system and method for treating a flue gas stream to remove strong acid compounds selected from the group consisting of hydrofluoric acid (HF), hydrochloric acid (HCl),...
US20110047994 EXHAUST GAS PURIFICATION APPARATUS  
An exhaust gas purification apparatus includes an exhaust gas passage, a first oxidation catalyst, a selective catalytic reduction catalyst, an oxidation-reduction catalyst and a urea water supply...
US20050192472 System and method for treatment of hazardous materials, e.g., unexploded chemical warfare ordinance  
Systems and methods for treating hazardous materials are disclosed. One exemplary implementation provides a system for rendering chemical weapons materiel less hazardous. This system includes a...
US20150030508 METHOD AND A DEVICE FOR REMOVING NITROGEN OXIDES AND SULPHUR TRIOXIDE FROM A PROCESS GAS  
A catalytic reactor (16) is provided for purposes of effecting therewith the removal of nitrogen oxides from a process gas (F) that includes at least two catalyst bed segments (48, 50, 52), each...
US20110030351 EXHAUST GAS PURIFICATION APPARATUS  
The exhaust gas purification apparatus includes an oxidation catalyst, an ammonia adsorption portion, a selective catalytic reduction catalyst and a urea water supply device. The oxidation...
US20110098367 METHOD & APPARATUS FOR PROCESSING FISCHER-TROPSCH OFF-GAS  
This invention concerns methods and apparatus for processing Fischer-Tropsch off-gas comprising the following steps: a) subjecting Fischer-Tropsch off-gas to at least a water gas shift reaction...
US20100119420 ABATEMENT SYSTEM HAVING ENHANCED EFFLUENT SCRUB AND MOISTURE CONTROL  
Apparatus for improved treatment of effluents are provided herein. In some embodiments, an abatement system may include an exhaust conduit to flow an effluent stream therethrough; a plurality of...

Matches 1 - 50 out of 96 1 2 >