Patent application number | Description | Published |
20090004079 | MULTI-COMPONENT CATALYST SYSTEM AND METHOD FOR THE REDUCTION OF NOx - A catalyst system for the reduction of NO | 01-01-2009 |
20090139215 | METHODS FOR REDUCING EMISSIONS FROM DIESEL ENGINES - A method is provided for operating a diesel engine with reduced emissions. The method comprises combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. The diesel exhaust gases are admixed with a second biodiesel blend fuel, and the second biodiesel blend fuel is hydrolyzed to form reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents. The invention further provides a method for operating a diesel engine with reduced emissions, comprising combusting a first biodiesel blend fuel in a diesel engine resulting in the production of diesel exhaust gases containing NOx. A second biodiesel blend fuel is converted in a fuel processor thereby forming reducing agents, and the diesel exhaust gases are admixed with the reducing agents. The diesel exhaust gases containing NOx are passed through an NOx-reducing catalyst to reduce the NOx through a selective catalytic reduction reaction with the reducing agents. | 06-04-2009 |
20100024400 | EMISSION CONTROL SYSTEM AND METHOD - A system includes an exhaust conduit configured to conduct a stream of exhaust gas, wherein the exhaust conduit comprises a selective catalytic reduction catalyst reactor comprising a first catalyst composition; an fuel source configured to introduce a fuel into the exhaust gas stream within the exhaust conduit upstream of the selective catalytic reduction catalyst reactor; a catalytic partial oxidation reformer in fluid communication with the exhaust gas stream and upstream from the selective catalytic reduction catalyst reactor, wherein the catalytic partial oxidation reformer can introduce a hydrogen-rich syngas co-reductant into the exhaust gas stream, when a temperature of the exhaust fluid is less than a determined threshold temperature. | 02-04-2010 |
20100095591 | EMISSIONS CONTROL SYSTEM AND METHOD - A system includes a fuel converter comprising a catalyst composition, and the catalyst composition can convert fuel into a hydrocarbon reductant stream; a separation system that separates the hydrocarbon reductant stream into a first reductant sub-stream that comprises short chain hydrocarbon molecules, and a second reductant sub-stream that comprises long chain hydrocarbon molecules; a selective catalytic reduction catalyst reactor in fluid communication with the fuel converter, and the catalyst reactor has an inner surface that defines a first zone and a second zone, and the first zone is configured to receive the second reductant sub-stream, and the second zone is configured to receive the first reductant sub-stream; and an exhaust stream that flows into the first zone contacts the second reductant sub-stream before flowing into the second zone and contacting the first reductant sub-stream. | 04-22-2010 |
20100146947 | EMISSIONS CONTROL SYSTEM AND METHOD - A system comprising a fuel converter comprising a catalyst composition capable of converting a fuel into a selected one or both of a syngas reductant and a short chain hydrocarbon reductant, wherein the catalyst composition comprises: cracking sites that perform a cracking function when a temperature of an exhaust fluid is greater than a predetermined threshold temperature, wherein the cracking function converts long chain hydrocarbon molecules to short chain hydrocarbon molecules; and partial oxidation sites that perform a catalytic partial oxidation function when the temperature of the exhaust fluid is less than the predetermined threshold temperature, wherein the catalytic partial oxidation function oxidizes the fuel to produce the syngas reductant; and a selective catalytic reduction catalyst reactor in fluid communication with the fuel converter and the exhaust fluid. | 06-17-2010 |
20110047988 | CATALYST AND METHOD OF MANUFACTURE - A catalyst system comprising a first catalytic composition comprising a first catalytic material disposed on a metal inorganic support; wherein the metal inorganic support has pores; and at least one promoting metal. The catalyst system further comprises a second catalytic composition comprising, (i) a zeolite, or (ii) a first catalytic material disposed on a first substrate, the first catalytic material comprising an element selected from the group consisting of tungsten, titanium, and vanadium. The catalyst system may further comprise a third catalytic composition. The catalyst system may further comprise a delivery system configured to deliver a reductant and optionally a co-reductant. A catalyst system comprising a first catalytic composition, the second catalytic composition, and the third catalytic composition is also provided. An exhaust system comprising the catalyst systems described herein is also provided. | 03-03-2011 |
20110047995 | CATALYST AND METHOD OF MANUFACTURE - A catalyst system comprising a first catalytic composition comprising, (i) a first component comprising a zeolite, and (ii) a second component comprising a homogeneous solid mixture containing at least one catalytic metal and at least one metal inorganic network; wherein the pores of the solid mixture have an average diameter in a range of about 1 nanometer to about 15 nanometers; wherein the first component and the second component form an intimate mixture. The catalyst system may further comprise a second catalytic composition and a third catalytic composition. The catalyst system may further comprise a delivery system configured to deliver a reductant and optionally a co-reductant. An exhaust system comprising the catalyst systems described herein is also provided. | 03-03-2011 |
20110120100 | CATALYST AND METHOD OF MANUFACTURE - A catalyst system comprising a first catalytic composition comprising a homogeneous solid mixture containing at least one catalytic metal and at least one metal inorganic support. The pores of the solid mixture have an average diameter in a range of about 1 nanometer to about 15 nanometers. The catalytic metal comprises nanocrystals. | 05-26-2011 |
20110166015 | PROCESS FOR PREPARING CATALYST POWDER - The present invention details a process for producing a catalyst powder. The steps of the process include preparing catalyst slurry, drying, pyrolyzing, and calcining the catalyst slurry to obtain a calcined catalyst powder. The catalyst slurry comprises a catalyst, a liquid carrier, a templating agent, and a catalyst substrate. The catalyst slurry is dried to obtain a raw catalyst powder. The raw catalyst powder is heated in a first controlled atmosphere to obtain a pyrolyzed catalyst powder and the pyrolyzed catalyst powder is calcined in a second controlled atmosphere to obtain a calcined catalyst powder. A method of fabricating a catalyst surface and catalytic converter using the prepared catalyst powder is also illustrated. | 07-07-2011 |
20110209459 | System and Method for Controlling Nitrous Oxide Emissions of an Internal Combustion Engine and Regeneration of an Exhaust Treatment Device - A catalyst composition is provided that includes a catalytic metal secured to a substrate, and the substrate is mesoporous and has pores that are templated. A catalyst composition includes a catalytic metal secured to a mesoporous substrate. The mesoporous substrate is a reaction product of a reactive solution, a solvent, a modifier, and a templating agent. A method for controlling nitrous oxide emissions including the catalyst composition comprising introducing a regeneration fuel into an exhaust stream upstream relative to the catalyst composition and heating the exhaust stream upstream relative to the catalyst composition. When the regeneration fuel is introduced the air λ of an air/fuel mixture of a lean burn exhaust does not exceed 1. | 09-01-2011 |
20110239622 | EMISSION TREATMENT SYSTEM AND METHOD OF OPERATION - An emission treatment system is provided. The emission treatment system comprises a separation system and a selective catalytic reduction (SCR) catalyst. The separation system comprises a separator, a fuel inlet disposed to supply fuel to the separator, a first fuel outlet and a second fuel outlet respectively disposed to carry away fuel from the separator. The SCR catalyst comprises a catalyst composition comprising silver and templated metal oxide substrate. The emission treatment system is designed such that the separation system is configured to be in fluid communication with the SCR catalyst through the first fuel outlet during operation. A system including the emission treatment system and a combustion engine is also provided. Method of increasing NOx reduction efficiency of the SCR catalyst using fuel fraction is discussed. | 10-06-2011 |
20120082605 | EXHAUST TREATMENT SYSTEM AND METHOD OF OPERATION - An exhaust treatment method is provided. Method of increasing activation of NOx reduction catalyst using two or more reductant is discussed. The NOx catalyst is disposed to receive both the exhaust stream and reductant stream. The sensor is disposed to sense a system parameter related to carbon loading of the catalyst and produce a signal corresponding to the system parameter. The controller is disposed to receive the signal and to control dosing of the reductant stream based at least in part on the signal. The method includes sensing a system parameter related to carbon loading of a catalyst, producing a signal corresponding to the system parameter and sending the signal to a controller; and controlling a dosing of a reductant stream based at least in part on the signal. | 04-05-2012 |
20120087838 | CATALYST AND METHOD OF MANUFACTURE - A catalyst system includes a first catalytic composition and a second catalytic composition. The first catalytic composition includes a homogeneous solid mixture, which includes a first catalytic material disposed on a first substrate. The pores of the solid mixture have an average diameter of greater than about 45 nanometers. The second catalytic composition includes at least one of a zeolite or a second catalytic material disposed on a second substrate. The second catalytic material includes an element selected from the group that includes tungsten, titanium, and vanadium. | 04-12-2012 |
20120329644 | CATALYST COMPOSITION AND CATALYTIC REDUCTION SYSTEM - A catalyst composition, a method of preparation of catalyst composition, a catalytic reduction system including the catalyst composition and a system using the catalytic reduction system are provided. The catalyst composition includes a templated amorphous metal oxide substrate, a catalyst material, and a sulfur scavenger material. The catalyst material includes a catalyst metal disposed on the templated metal oxide substrate and the sulfur scavenger includes an alkali metal. | 12-27-2012 |
20130104526 | SYSTEM AND METHOD FOR REDUCING MONO-NITROGEN OXIDE EMISSIONS | 05-02-2013 |
20130129575 | CATALYST AND METHOD OF MANUFACTURE - A catalyst system comprising a first catalytic composition comprising a first catalytic material disposed on a metal inorganic support; wherein the metal inorganic support has pores; and at least one promoting metal. The catalyst system further comprises a second catalytic composition comprising, (i) a zeolite, or (ii) a first catalytic material disposed on a first substrate, the first catalytic material comprising an element selected from the group consisting of tungsten, titanium, and vanadium. The catalyst system may further comprise a third catalytic composition. The catalyst system may further comprise a delivery system configured to deliver a reductant and optionally a co-reductant. A catalyst system comprising a first catalytic composition, the second catalytic composition, and the third catalytic composition is also provided. An exhaust system comprising the catalyst systems described herein is also provided. | 05-23-2013 |
20130158752 | FUEL OPTIMIZING SYSTEM FOR A MOBILE ASSET, AND A RELATED METHOD THEREOF - A method includes determining a plurality of characteristic profiles associated with a mobile asset moving from a first operating point to a second operating point along a predefined path. The method further includes determining a fuel combustion ratio of the plurality of the fuels associated with at least one engine cylinder of the mobile asset based on the plurality of characteristic profiles so as to maintain a plurality of actual values associated with usage of the plurality of fuels to less than or equal to predefined corresponding threshold values. The method also includes controlling a fuel delivery system of the mobile asset so as to deliver the plurality of fuels to the at least one engine cylinder based on the fuel combustion ratio. | 06-20-2013 |
20130158848 | FUEL SELECTION METHOD AND RELATED SYSTEM FOR A MOBILE ASSET - Embodiments of methods and systems related to operating a mobile asset over a fixed route are provided. In one example, an engine system is provided. The example engine system includes a fuel controller configured to adjust a first amount of at least one of a first fuel of a plurality of fuels delivered to an engine and a second amount of a second fuel of the plurality of fuels responsive to at least one of fuel market information for the plurality of fuels or route information about a fixed route along which a mobile asset powered by the engine is operable to travel. | 06-20-2013 |
20130303365 | CATALYST AND METHOD OF MANUFACTURE - A catalyst system comprising a first catalytic composition comprising a homogeneous solid mixture containing at least one catalytic metal and at least one metal inorganic support. The pores of the solid mixture have an average diameter in a range of about 1 nanometer to about 15 nanometers. The catalytic metal comprises nanocrystals. | 11-14-2013 |
20140093971 | System and Method for Determining Concentration of Oxygen in Chemical Mixtures - A system for determining concentration of oxygen in a chemical mixture is presented. The system includes a first sensing device configured to measure the concentration of oxygen in the chemical mixture and generate a first output signal, where the first output signal is indicative if the concentration of oxygen in the chemical mixture and a type of the chemical mixture. Furthermore, the system includes a second sensing device configured to measure the concentration of oxygen in the chemical mixture and generate a second output signal. In addition, the system includes a processing unit operatively coupled to the first sensing device and the second sensing device and configured to determine the concentration of oxygen in the chemical mixture based on the first output signal, the second output signal, or both the first output signal and the second output signal based on a type of the chemical mixture. | 04-03-2014 |
20140222317 | MULTI-FUEL SYSTEM AND METHOD - A method provides for operating an engine configured to use a plurality of differing fuels. The method includes determining a fuel combustion ratio of the plurality of the fuels associated with at least one engine cylinder of the engine based at least in part on one or more of a plurality of characteristic profiles. This maintains one or more of a plurality of actual values associated with usage of the plurality of fuels relative to defined corresponding threshold values. The fuel combustion ratio includes a ratio of the plurality of fuels to be delivered to the at least one engine cylinder. A fuel delivery system delivers the plurality of fuels to the at least one engine cylinder based on the fuel combustion ratio. | 08-07-2014 |
20140294710 | Method For Preparing A Catalyst Composition Suitable For Removing Sulfur From A Catalytic Reduction System - A method of preparing a catalyst composition suitable for removing sulfur from a catalytic reduction system and the catalyst composition prepared by the method are provided. The method of preparation of a catalyst composition, comprises: combining a metal oxide precursor, a catalyst metal precursor and an alkali metal precursor in the presence of a templating agent; hydrolyzing and condensing to form an intermediate product that comprises metal oxide, alkali metal oxide, and catalyst metal; and calcining to form a templated amorphous metal oxide substrate having a plurality of pores wherein the alkali metal oxide and catalyst metal are dispersed in an intermixed form in the metal oxide substrate. | 10-02-2014 |
20140378296 | Manufacture of Catalyst Compositions and Systems - A method of producing a catalyst composition is provided, the method comprising mixing (i) a first component comprising a zeolite, and (ii) a second component comprising a homogeneous solid mixture containing at least one catalytic metal and at least one metal inorganic support, wherein the first component and the second component form an intimate mixture, and wherein the homogeneous solid mixture is produced by mixing a reactive solution comprising a precursor of the metal inorganic support and a templating agent with a precursor of the catalyst metal, and calcining the mixture to form the homogeneous solid mixture. The templating agent affects one or more of pore size, pore distribution, pore spacing, or pore dispersity of the metal inorganic support. The pores of the solid mixture produced after calcination may have an average diameter in a range of about 1 nanometer to about 15 nanometers. | 12-25-2014 |
20150033709 | SULFUR SENSOR FOR ENGINE EXHAUST - A system and a method of operating the system are presented. The system includes a first sensor, a second sensor and a catalyst. The catalyst is located between the first sensor and the second sensor in the path of an exhaust stream from an engine. The first sensor and the second sensors include noble metal electrodes, and are configured to measure concentration of a gaseous species and produce first and second sensor signals respectively. The system further includes a sulfur detector that is configured to receive the first and second signals, and configured to determine a sulfur concentration in the exhaust stream with a lambda value less than 1. The sulfur detector is configured to detect the concentration of sulfur by performing a calculation involving the first and second sensor signals; and by producing an output signal based on the determined sulfur concentration. | 02-05-2015 |