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Reductant topics
Internal Combustion Engine
Exhaust Gas
Scr Catalyst
Combustion
Selective Catalytic Reduction
Catalytic Reduction
Downstream
Nox Reduction
Nanoparticle
Hydrogen Sulfide
Regenerate
Hydrocarbon
Nitrogen Dioxide
Diesel Oxidation Catalyst
Conversion Efficiency

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Reductant patents



      
           
This page is updated frequently with new Reductant-related patent applications. Subscribe to the Reductant RSS feed to automatically get the update: related Reductant RSS feeds. RSS updates for this page: Reductant RSS RSS


Cross style (4 port) ammonia gas injector

Cross style (4 port) ammonia gas injector

Premixer conduit for exhaust aftertreatment system

Date/App# patent app List of recent Reductant-related patents
12/18/14
20140369899
 Multi-compartment phae separation tank for multiple reductant injectors patent thumbnailnew patent Multi-compartment phae separation tank for multiple reductant injectors
A cooling system in an aftertreatment unit for a multi-cylinder internal combustion engine is disclosed. The aftertreatment unit includes a selective catalyst reduction (scr) module, an exhaust conduit portion, and a number of reductant injectors.
12/18/14
20140369898
 Cross style (4 port) ammonia gas injector patent thumbnailnew patent Cross style (4 port) ammonia gas injector
An ammonia (reductant) injector for delivering a ammonia into an engine exhaust stream is disclosed. Generally speaking, the injector has a body with an inlet fluidly coupled to a plurality of channels within the body, a plurality of discharge ports, each port being fluidly coupled to at least one channel, and an ammonia feed line connected to the inlet of the body.
12/18/14
20140366870
 Methods for recovering and recycling salt byproducts in biorefinery processes patent thumbnailnew patent Methods for recovering and recycling salt byproducts in biorefinery processes
In some variations, the invention provides a process for fractionating biomass, comprising: in a digestor, fractionating a biomass feedstock in the presence of a solvent for lignin, sulfur dioxide, and water, to produce a liquor containing hemicellulose, cellulose-rich solids, and lignin; substantially removing the cellulose-rich solids from the liquor; hydrolyzing the hemicellulose contained in the liquor, to produce hemicellulosic monomers; hydrolyzing the cellulose-rich solids to produce glucose; neutralizing, with lime, a hydrolysate liquid containing the hemicellulosic monomers and the glucose, thereby generating gypsum; heating the gypsum to form calcium sulfate; reducing the calcium sulfate with a reductant (such as syngas) to generate calcium oxide and sulfur dioxide; and recycling the calcium oxide and the sulfur dioxide. In other variations, magnesium oxide is the base from neutralizing the hydrolysate, and the resulting magnesium sulfate is converted back to magnesium oxide and sulfur dioxide through combustion..
12/18/14
20140366514
 Premixer conduit for exhaust aftertreatment system patent thumbnailnew patent Premixer conduit for exhaust aftertreatment system
An exhaust aftertreatment system is disclosed. The exhaust aftertreatment system includes a premixer conduit that defines an exhaust flow path, a baffle disposed in the exhaust flow path, and a reductant injector in fluid communication with the exhaust flow path.
12/11/14
20140363676
 Phosphorus-doped nickel nanoparticle and method of manufacturing the same patent thumbnailPhosphorus-doped nickel nanoparticle and method of manufacturing the same
The present invention provides a method of manufacturing a phosphorus-doped nickel nanoparticle. The method includes the steps of: mixing a nickel solution including a nickel compound and a solvent, a seed particle, and a phosphorus-containing reductant in an arbitrary order to prepare a mixed solution; and adjusting ph of the mixed solution such that the mixed solution becomes acidic.
12/11/14
20140363525
 Method and apparatus for generating nitric oxide for medical use patent thumbnailMethod and apparatus for generating nitric oxide for medical use
A method and system for generating and delivering nitric oxide directly to a patient. A reaction chamber is provided that is located at or in close proximity to the patient and reactants within the reaction chamber react together to produce a predetermined amount of nitric oxide.
12/11/14
20140363358
 Exhaust aftertreatment system and method for operating the system patent thumbnailExhaust aftertreatment system and method for operating the system
An exhaust system includes a first scr catalyst and a second scr catalyst positioned downstream of the first scr catalyst. A first injector is provided upstream of the first scr catalyst, and a second injector is provided upstream of the second scr catalyst.
12/11/14
20140363357
 Systems and techniques for nozzle cooling of diesel exhaust fluid injection systems patent thumbnailSystems and techniques for nozzle cooling of diesel exhaust fluid injection systems
A system is provided for delivery of diesel exhaust fluid or other reductant to an injector for release into an engine exhaust aftertreatment system. The injector includes a nozzle assembly that thermally shields the diesel exhaust fluid from the exhaust gas temperatures.
12/11/14
20140360166
 Systems and methods for nox sensor diagnostics patent thumbnailSystems and methods for nox sensor diagnostics
Systems and methods are disclosed for diagnosing gain rationality of an nox sensor that is downstream of a selective catalytic reduction (scr) catalyst. Sensor diagnostics are performed while maintaining reductant dosing to the scr catalyst..
12/04/14
20140352280
 Air driven reductant dosing system patent thumbnailAir driven reductant dosing system
A dosing system for delivering reductant into an exhaust gas treatment system of an internal combustion engine using an air driven hydraulic pump, which includes a pressure pump tank and a liquid supply tank, for closed-loop controlling reductant pressure, and a three-stage pwm control method for dosing rate control. Reductant residue in the dosing system is purged by using compressed air, and when the air driven hydraulic pumps is positioned inside a reductant tank, heating means in the reductant tank can also be used for heating the air driven hydraulic pump.
12/04/14
20140352279
Exhaust gas treatment system with emission control during filter regeneration
An exhaust gas treatment system for an engine includes an exhaust gas inlet tube configured to receive an exhaust gas from the engine. A particulate filter, a heat exchange system and first and second selective catalytic reduction (scr) devices are in fluid communication with the exhaust gas inlet tube.
11/27/14
20140349841
Catalyzed scr filter and emission treatment system
Provided is a catalyst article for simultaneously remediating the nitrogen oxides (nox), particulate matter, and gaseous hydrocarbons present in diesel engine exhaust streams. The catalyst article has a soot filter coated with a material effective in the selective catalytic reduction (scr) of nox by a reductant, e.g., ammonia..
11/27/14
20140349840
Ammonia oxidation catalyst in scr system
Disclosed herein is an ammonia oxidation catalyst for converting nitrogen oxides generated from a mobile source or fixed source into harmless nitrogen using ammonia as a reductant and preventing the formation of nitrogen oxides due to the oxidation of ammonia. The ammonia oxidation catalyst includes selective catalytic reductive zeolite sequentially impregnated with platinum and copper..
11/27/14
20140348732
Operating method in hydrometallurgy of nickel oxide ore
It is an object to provide a method for producing magnesium oxide by which magnesium oxide being high in purity and low in impurity content can be produced simply and efficiently from a sulfuric acid solution containing magnesium and calcium such as waste water. In the present invention, calcium is precipitated as calcium sulfate and separated by concentrating a sulfuric acid solution containing magnesium and calcium, and magnesium is precipitated as magnesium sulfate and separated by further concentrating the solution resulting from the separation of calcium.
11/27/14
20140345257
Mixing system
A mixing system is provided. The mixing system includes a housing defining a boundary of a mixing conduit including an expansion section with an injector mount and a reductant diverter extending into the conduit upstream of the injector mount in the expansion section.
11/13/14
20140334983
Reductant sensor system
An exhaust treatment fluid system includes a tank housing for storing an exhaust treatment fluid. A suction tube includes a first end positioned within the housing and a second end in communication with a suction port of the housing.
11/13/14
20140331655
Mounting assembly for a reductant injector
A mounting assembly for an injector is located in a curved portion of an exhaust line having an exhaust flow from an upstream end to a downstream end. The mounting assembly includes an indent extending at least partially into the exhaust line curved portion and disposed in the exhaust flow.
11/06/14
20140329149
Method for preparing electrode materials and electrode materials produced therefrom
The present invention provides a method for preparing an electrode material, comprising providing an acidic plating bath; adding titanium dioxide in the form of powder, metal salt, and reductant to said acidic plating bath to obtain a precursor; and heat treating said precursor to obtain an electrode material. When the electrode material obtained by said method is applied to batteries, the batteries have not only high capacity, but also long lifetime..
11/06/14
20140328936
Novel pharmaceutical statin composition
The invention relates to a pharmaceutical composition, comprising or consisting of: 10 to 30 weight percent of at least a pharmaceutically active amount of a pharmaceutical substance selected from the group comprising statins, in particular water-insoluble, oxidatively degradable statins, preferably cerivastatin, fluvastatin, lovastatin, pitavastatin, pravastatin, rosuvastatin, simvastatin, or combinations thereof, 30 to 70 weight percent of lactose hydrate, 2 to 15 weight percent of microcrystalline cellulose, 5 to 25 weight percent of a partially water-soluble starch, 0.2 to 4 weight percent of at least one alkali and/or alkaline-earth salt of stearic acid and/or stearyl fumaric acid, wherein the composition contains no antioxidatively active substances such as chain terminators, reductants, free-radical scavengers, and complexing agents. The invention further relates to a method for the production thereof, to a composition that can be obtained in the method, and to the use of the pharmaceutical composition according to the invention..
11/06/14
20140326325
System and method for filling reductant tank
A method for filling a reductant tank is disclosed. The method includes creating a lower air pressure within the reductant tank than a pressure of an external reductant reservoir using the first valve, the second valve, and the venturi.
11/06/14
20140325966
Injector control for a selective catalytic reduction system
Systems and methods are provided for controlling the amount and timing of nitrogen oxide reductant injected during a given injection cycle into an exhaust system of a vehicle as part of a selective catalytic reduction system. The amount of reductant injected is determined by at least one computational model that accounts for the growth of liquid and/or solid reductant film growth on the interior of the exhaust system.
11/06/14
20140325965
Diesel exhaust fluid control system
An engine has an exhaust gas system and a reductant delivery system. The reductant delivery system includes a pump which pumps reductant from a tank an injector which injects reductant into the exhaust gas, and a heater for heating the reductant in the tank.
11/06/14
20140325964
Ammonia gas pressure booster
A system and method for delivering a reductant into an engine exhaust stream for use in the reduction of nox is disclosed. The system includes a cartridge having an interior space for storing the reductant containing material, a fluid supply line fluidly connected to the cartridge for receiving the reductant, a pressure boosting device for boosting the flow of reductant, a flow management device, and, an injector for injecting the reductant into an after-treatment system for combining with the exhaust stream.
11/06/14
20140325962
Diesel engine exhaust gas purification method and exhaust gas purification system
An exhaust gas purification method of a diesel engine, which purifies exhaust gas while suppressing deterioration in drivability and fuel consumption, including when exhaust gas enters a rich reduction state, opening an egr valve and closing an intake throttle, if a temperature of an nox occlusion reduction catalyst is at or above a predetermined temperature, and a vehicle having a diesel engine is decelerating from a speed at or above a predetermined speed, and then closing an exhaust throttle provided downstream of the nox occlusion reduction catalyst and supplying fuel to the nox occlusion reduction catalyst as a reductant.. .
10/30/14
20140318102
Exhaust aftertreatment system where an activator material is added to the reductant fed to the catalytic converter
An exhaust gas after treatment system includes a catalytic converter arrangement with at least one catalytic material, wherein the catalytic converter arrangement is arranged in an exhaust gas path downstream of a combustion engine, and further includes one or more dosing interfaces for feeding at least one reducing agent for reducing an nox content in the exhaust gas. The one or more dosing interfaces are arranged to feed at least one activator material to the exhaust gas.
10/30/14
20140317918
Composition and methods of forming solder bump and flip chip using the same
Provided are a composition for an anisotropic conductive adhesive, a method of forming a solder bump and a method of forming a flip chip using the same. The composition for an anisotropic conductive adhesive includes a low melting point solder particle and a thermo-curable polymer resin.
10/30/14
20140317915
Composition and methods of forming solder bump and flip chip using the same
Provided are a composition for an anisotropic conductive adhesive, a method of forming a solder bump and a method of forming a flip chip using the same. The composition for an anisotropic conductive adhesive includes a low melting point solder particle and a thermo-curable polymer resin.
10/23/14
20140314645
Scr catalyst ammonia surface coverage estimation and control
Described herein are various embodiments of an apparatus, a system, and a methods for reducing nox emissions using ammonia storage on an scr catalyst. For example, according to one embodiment, an apparatus for controlling an scr system of an internal combustion engine system includes an ammonia storage module and a reductant dosing module.
10/23/14
20140314644
Reductant delivery unit for automotive selective catalytic reduction with reducing agent heating
A reductant delivery unit for selective catalytic reduction (scr) after-treatment for vehicles includes a solenoid operated fluid injector associated with an exhaust gas flow path upstream of a scr catalytic converter. The fluid injector has a fluid inlet and a fluid outlet.
10/23/14
20140311837
Safety brake system for trailers
In a gaseous-fuelled stoichiometric compression ignition internal combustion engine, a pilot fuel is injected directly into the combustion chamber to help initiate a multi-point ignition. The engine provides performance improvements approaching those of high pressure direct injection engines but with less complexity because the gaseous fuel is introduced into the intake air subsystem at relatively low pressure and as a result of the stoichiometric combustion, the low oxygen content in the combustion products exiting the combustion chamber allows the use of a three-way catalyst instead of other after treatment arrangements normally associated with conventional compression ignition engines that require the addition of a reductant..
10/23/14
20140311137
Tri-flow exhaust treatment device with reductant mixing tube
An exhaust treatment device includes first and second substrates positioned in parallel within a housing. A baffle plate supports the substrates, an inlet tube and an outlet pipe, and defines a portion of a first chamber.
10/23/14
20140311126
Air-injection system to improve effectiveness of selective catalytic reduction catalyst
Embodiments are described to improve the durability of a lean nox aftertreatment system. According to one embodiment of the present invention an air injection system is used to inject air continuously into the exhaust system between the upstream three-way catalyst and the downstream selective catalytic reduction (scr) catalyst when the engine is operating at stoichiometric or rich air/fuel ratios and the exhaust temperatures are above a calibratable level (e.g., 700° c.).
10/16/14
20140305346
Alkaline earth oxides for green processes for metals and other material
The present invention teaches the method to use the sulfate or sulfites based raw materials, such as magnesium, calcium and other alkative earth sulfates or sulfites to produce the respective oxides in a carbon five basis, by using sulfur as the fuel and the reductant. The invention also utilizes renewable energy such as solar thermal or green electricity wherever possible.
10/09/14
20140301923
Selective catalytic reduction catalyst system
Described are scr catalyst systems comprising a first scr catalyst composition and a second scr catalyst composition arranged in the system, the first scr catalyst composition promoting higher n2 formation and lower n2o formation than the second scr catalyst composition, and the second scr catalyst composition having a different composition than the first scr catalyst composition, the second scr catalyst composition promoting lower n2 formation and higher n2o formation than the first scr catalyst composition. The scr catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant..
10/02/14
20140294963
Novel gold-platinum based bi-metallic nanocrystal suspensions, electrochemical manufacturing processes therefor and uses for the same
The present invention relates to novel gold-platinum based bi-metallic nanocrystal suspensions that have nanocrystal surfaces that are substantially free from organic or other impurities or films associated with typical chemical reductants/stabilizers and/or raw materials used in nanoparticle formation processes. Specifically, the surfaces are “clean” relative to the surfaces of metal-based nanoparticles made using chemical reduction (and other) processes that require organic (or other) reductants and/or surfactants to grow (and/or suspend) metal nanoparticles from metal ions in a solution.
10/02/14
20140290214
Fluid connectors for reductant systems
A reductant system for an aftertreatment system of an internal combustion engine is disclosed. The reductant system includes at least one reductant feed line and a reductant system component such as a dosing module.
09/25/14
20140286839
Process for the selective removal of molybdenum from a solution containing it
The present invention relates to a process for selectively removing molybdenum from a solution which contains molybdenum, said process comprising the following steps: bringing the solution to an acid ph lower than or equal to 3, preferably lower than or equal to 2, even more preferably lower than or equal to 0.5, by the addition of an inorganic acid; adding at least one organic solvent, preferably toluene or xylene, to the solution and stirring continuously so as to create a water-organic emulsion; adding to the water-organic emulsion at least one alkaline metal xanthate having the general formula merx, wherein r is a linear or branched alkyl group having a number of carbon atoms higher than or equal to 2, me is an alkaline metal selected from li, na, k, rb, cs and fr, and x is the xanthate group, so as to form a complex with molybdenum wherein the molar ratio molybdenum/alkaline metal xanthate ranges from 1/6 to 1/2, keeping the emulsion at an acid ph by the addition of an inorganic acid, and interrupting the stirring so as to allow the separation of the aqueous phase from the organic phase. The linear or branched alkyl group r preferably has a number of carbon atoms higher than or equal to 2 and lower than or equal to 12.
09/25/14
20140286832
Exhaust system
An exhaust system is provided. The exhaust system includes an exhaust conduit having a protuberance thereon.
09/25/14
20140283933
Scr system comprising a reductant distributor
An scr system comprising a reductant tank, a return passageway, and a reductant distributor. The return passageway is coupled fluidly to the reductant tank via an outlet of the return passageway.
09/18/14
20140275388
Redox polymers for improved dirt and water resistance for elastomeric wall and roof coatings
The present invention provides elastomeric roof coatings and aqueous coating compositions of (i) an acrylic emulsion copolymer that comprises (ii) a reductant and has a high molecular weight, (iii) a combination of a hydrophilic polymeric dispersant and a pigment, extender or filler, and (iv) a multivalent transition metal ion or multivalent transition metal ion compound or salt. The composition and coating provide excellent swelling resistance and a balance of tensile and elongation in an acrylic roof coating composition..
09/18/14
20140274665
Selective catalytic reduction catalyst system
Described are scr catalyst systems comprising a first scr catalyst composition and a second scr catalyst composition arranged in the system, the first scr catalyst composition having a faster denox response time when exposed to ammonia than the second catalyst composition and the second scr catalyst composition has a higher steady state denox performance than the first catalyst composition. The scr catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant..
09/18/14
20140271452
Stabilized metal-exchanged sapo material
Described are catalyst materials and catalytic articles comprising a metal exchanged sapo material comprising a plurality of substitutional sites consisting essentially of si(4al) sites and substantially free of si(0al) sites. The materials and catalytic articles are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant..
09/18/14
20140271423
Catalytic reduction of nox
A system for nox reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of no to no2, particulate filter, a source of reductant such as nh3 and an scr catalyst. Considerable improvements in nox conversion are observed..
09/18/14
20140271422
Selective catalytic reduction catalyst system
Described are scr catalyst systems comprising a first scr catalyst composition and a second scr catalyst composition arranged in the system, the first scr catalyst composition promoting higher n2 formation and lower n2o formation than the second scr catalyst composition, and the second scr catalyst composition having a different composition than the first scr catalyst composition, the second scr catalyst composition promoting lower n2 formation and higher n2o formation than the first scr catalyst composition. The scr catalyst systems are useful in methods and systems to catalyze the reduction of nitrogen oxides in the presence of a reductant..
09/18/14
20140271385
Catalytic reduction of nox
A system for nox, reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of no to no2, particulate filter, a source of reductant such as nh3 and an scr catalyst. Considerable improvements in nox conversion are observed..
09/18/14
20140262955
Process, method, and system for removing heavy metals from fluids
Trace element levels of mercury in crude oil are reduced by first passing the crude oil through a filtration device to generate filtered crude having a reduced concentration of mercury and a reject stream having a concentrated mercury level. In one embodiment, the filtration device is back-flushed to generate the reject stream.
09/18/14
20140260216
Apparatus, method, and system for diagnosing reductant delivery performance
An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system with a controller that performs period diagnostics to determine whether there is a blockage in the reductant delivery system. The diagnostic procedure may include sampling first and second pressures at first and second operating conditions, respectively, and then comparing the first pressure differential between the first and second pressures with one or more threshold pressure differentials to determine whether system components such as a dosing line and an injector are at least partially blocked.
09/18/14
20140260206
Apparatus, method, and system for reductant filtration
An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system with a reductant tank. A filter module positioned in the reductant tank filters reductant before it is conveyed to the reductant pump to remove impurities.
09/18/14
20140260202
Reductant material deposit reduction in exhaust aftertreatment systems
In one non-limiting embodiment, an apparatus for treating exhaust includes a reductant injector, an aftertreatment component including a nox reduction catalyst, and a pathway for directing exhaust to the aftertreatment component. The pathway includes a constriction zone within which is positioned a mixing member.
09/18/14
20140260200
Catalytic reduction of nox
A system for nox reduction in combustion gases, especially from diesel engines, incorporates an oxidation catalyst to convert at least a portion of no to no2, particulate filter, a source of reductant such as nh3 and an scr catalyst. Considerable improvements in nox conversion are observed..
09/11/14
20140257672
Ejector flow rate computation for gas constituent sensor compensation
Methods and systems are provided for computing the flow rate at a suction port of an ejector arranged in series with an outlet of an engine system such as a fuel vapor purge system during certain conditions. In one example, the need for a sensor at an ejector suction port may be reduced by adjusting exhaust gas recirculation based on a flow rate at the ejector suction port, the flow rate based on a flow characteristic of the ejector and a flow characteristic of an engine system.
09/11/14
20140255281
System and method for exhaust gas after treatment
A hydrocarbon selective catalytic reduction (hc-scr) catalyst is regenerated using a nitrogen-based reductant agent. The hc-scr catalyst is in communication with a power system such as an internal combustion engine and receives exhaust gasses from the internal combustion engine.
09/11/14
20140251084
Methods and systems for reducing chromium containing raw material
A method for reducing a chromium containing material, comprising: combining the chromium containing material comprising chromium oxide with a carbonaceous reductant to form a chromium containing mixture; delivering the chromium containing mixture to a moving hearth furnace and reducing the chromium containing mixture to form a reduced chromium containing mixture; delivering the reduced chromium containing mixture to a smelting furnace; and separating the reduced chromium containing mixture into chromium metal and slag. The method also comprises agglomerating the chromium containing mixture in a granulator or the like.
09/11/14
20140250873
Systems and techniques for heating urea injection systems
A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source.
09/04/14
20140245722
Systems and techniques for heating urea injection systems
A reductant delivery system is provided for delivery of reductant to an engine exhaust aftertreatment system that is heated during cold temperature conditions. A heat exchange fluid flows through a heat exchange circuit that provides a flow path from the heat source to the doser, from the doser to the reductant storage tank, and from the reductant storage tank to the heat source.
09/04/14
20140245719
Apparatus, method, and system for diagnosing reductant deposits in an exhaust aftertreatment system
An exhaust gas treatment system for an internal combustion engine may have a reductant delivery system that delivers reductant to an exhaust stream in an exhaust aftertreatment system. A temperature sensor may be positioned in or near the flow of reductant and exhaust to measure the temperature of the reductant and exhaust.
08/28/14
20140242707
Compositions and methods for diagnosing hypercoagulability and hypocoagulability
The present invention provides a method for diagnosing hypercoagulability associated with carbon monoxide exposure in a subject. The method comprises obtaining a plasma sample from the subject, dividing the sample into at least two portions, and determining the clot strength of the first portion.
08/28/14
20140241963
Cold start startup unit for urea-based systems
An exhaust after-treatment system is described. Generally speaking, the system includes separate primary and secondary nox reducing systems for delivering reductant to an exhaust stream, a sensor system for determining relevant operating conditions and an electronic control module for activating the reducing systems.
08/28/14
20140241950
Exhaust system for a lean burn ic engine
An exhaust system (10) for a lean-burn internal combustion engine (12) comprises a first substrate monolith (16) comprising a catalyst for oxidising nitric oxide (no) comprising a catalytic oxidation component followed downstream by a second substrate monolith (18) which is a wall-flow filter having inlet channels and outlet channels, wherein the inlet channels comprise a nox absorber catalyst (20) and the outlet channels comprise a catalyst for selective catalytic reduction (22) of nitrogen oxides with nitrogenous reductant.. .
08/28/14
20140241948
Reductant delivery system
An aftertreatment system for the transport of fluid reductant to an exhaust of a combustion engine is provided. The aftertreatment system includes a reductant tank configured to store the reductant.
08/28/14
20140238195
Treatment of chemical feedstocks
A process for treating a zirconium containing feedstock includes fluorinating a feedstock comprising dissociated zircon (‘dz’) to obtain a zirconium fluorine compound and a silicon fluorine compound. The zirconium fluorine compound is separated from the silicon fluorine compound is provided.
08/28/14
20140237998
Mounting assembly for reductant injector with thermal isolation and sealing gasket
A mounting assembly for an injector is located in a curved portion of an exhaust line having an exhaust flow from an upstream end to a downstream end. The mounting assembly includes an indent extending at least partially into the exhaust line curved portion and disposed in the exhaust flow.
08/28/14
20140237996
System, method, and apparatus for sulfur recovery on an scr catalyst
System, apparatus, and methods are disclosed for treating a reduction catalyst that has been exposed to an amount of sulfur. The treating of the reduction catalyst includes providing a fluid stream at a position upstream of the reduction catalyst.
08/28/14
20140237995
System, method, and apparatus for sulfur recovery on an scr catalyst
System, apparatus, and methods are disclosed for treating a reduction catalyst that has been exposed to an amount of sulfur. The treating of the reduction catalyst includes providing a fluid stream at a position upstream of the reduction catalyst.
08/21/14
20140231930
Atomic layer deposition of hafnium or zirconium alloy films
Provided are methods of depositing hafnium or zirconium containing metal alloy films. Certain methods comprise sequentially exposing a substrate surface to alternating flows of an organometallic precursor and a reductant comprising m(bh4)4 to produce a metal alloy film on the substrate surface, wherein m is selected from hafnium and zirconium, and the organometallic precursor contains a metal n.
08/21/14
20140230433
Internal combustion engine with exhaust-gas aftertreatment arrangement and method for operating an internal combustion engine of said type
A system and method for controlling temperature of a urea reductant to form ammonia for nox reduction in a selective catalytic reducer coupled to a turbocharged engine exhaust by portioning a flow across the reductant between compressed air and ambient air.. .
08/21/14
20140230410
Internal combustion engine with exhaust-gas aftertreatment arrangement and intake air arrangement and method for operating an internal combustion engine of said type
A system and method for controlling temperature of a urea reductant to form ammonia for nox reduction in a selective catalytic reducer coupled to a turbocharged engine exhaust by portioning a flow across the reductant of one or more of the following: a combination of compressed air and ambient air; and/or a combination of the exhaust upstream and downstream the turbine.. .
08/14/14
20140223902
Internal combustion engine with selective catalytic converter for the reduction of nitrogen oxides and method for operating an internal combustion engine of said type
An internal combustion engine comprising a turbocharger wherein a bypass line in an exhaust gas discharge system delivers an aqueous urea reductant to an at least one scr catalyst and a method to maintain the reductant at a desired temperature to maximize its conversion to ammonia and optimize the reduction of nox in the scr.. .


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Reductant topics: Internal Combustion Engine, Exhaust Gas, Scr Catalyst, Combustion, Selective Catalytic Reduction, Catalytic Reduction, Downstream, Nox Reduction, Nanoparticle, Hydrogen Sulfide, Regenerate, Hydrocarbon, Nitrogen Dioxide, Diesel Oxidation Catalyst, Conversion Efficiency

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