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| Number | Title | Issue Date |
| 8084008 | Production of saturated ammonia storage materials A process for saturating a material capable of binding ammonia by ad- or absorption and initially free of ammonia or partially saturated with ammonia comprises treating said material under a pressure and associated temperature located on the vapor pressure curve of ... | 12/27/2011 |
| 7785556 | Method of recovering ammonia A method of recovering ammonia by the distillation of an aqueous solution containing ammonia, carbon dioxide and hydrogen cyanide. The distillation is conducted using a distillation apparatus having at least its portion which comes into contact with the aqueous solu... | 08/31/2010 |
| 7767181 | System and method for ammonia production A method of ammonia production for a selective catalytic reduction system includes producing a first exhaust flow and a second exhaust flow. The first exhaust flow has a higher NOx concentration than the second exhaust flow. The method also includes directing a port... | 08/03/2010 |
| 7682586 | Thermal decomposition of urea in a side stream of combustion flue gas using a regenerative heat exchanger This invention relates generally to the treatment of NOx in combustion flue gas. In certain embodiments, the invention relates to the use of a regenerative heat exchanger (RHE) to convert urea to ammonia in a side stream of flue gas. Ammonia and/or other urea decomp... | 03/23/2010 |
| 7431902 | Separation of ammonia from sulfur compounds A method for separating ammonia and sulfides from a sour water stream is disclosed. The stripping of a sour water stream where it is stripped to create a sour water stripper overhead gas and then contacted with an alkali hydroxide in order to separate ammonia and ma... | 10/07/2008 |
| 7416644 | Method and device for stripping ammonia from liquids The present invention provides a method and a system for stripping volatile compounds such as ammonia from liquids. Part of the ammonia is stripped from the liquid in a system having a shunt through which liquid such as e.g. fermented biomass can be diverted in the ... | 08/26/2008 |
| 7416715 | Method and apparatus for the production of gaseous ammonia from a urea solution A safe, economical and predictable process for producing ammonia from a urea solution, preferably where only a small amount of ammonia is required, (i.e. for SCR denitrification for small boilers, flue gas conditioning to enhance precipitator efficiency and/or allev... | 08/26/2008 |
| 7402292 | Device and methods of ammonia generation for NOx abatement One embodiment of a method of operating a NOx abatement system comprises: introducing an exhaust stream to an ammonia generator in a normal flow direction, adsorbing NOx from the exhaust stream in the ammonia generator, diverting the exhaust stream around the ammoni... | 07/22/2008 |
| 7371313 | On-site generation, purification, and distribution of ultra-pure anhydrous ammonia A system and method for generating, purifying, and using ultra-pure ammonia on-site, such as at a semiconductor manufacturing facility. The system includes an ammonia generation system configured to generate ammonia including carbon dioxide, water, and other impurit... | 05/13/2008 |
| 7326391 | Process for recovery and recycle of ammonia from a vapor stream A process for the recovery of unreacted ammonia from the effluent from a reaction zone used to produce acrylonitrile or methacrylonitrile comprising quenching the reactor effluent with an aqueous solution of ammonium phosphate in at least two stages, thereby capturi... | 02/05/2008 |
| 7297324 | Microchannel reactors with temperature control Microchannel devices and method of use are disclosed wherein a reaction microchamber 52 is in thermal contact with a heat exchange channel 61. An equilibrium limited exothermic chemical process occurs in the reaction microchamber 52. Sufficient ... | 11/20/2007 |
| 7294313 | Device and method for producing ammonia from solid urea pellets A device for producing ammonia from urea pellets includes a pellet dispensing device, a pellet accelerator, a pellet shooting channel, and an ammonia reactor having a chamber or zone for shooting in urea pellets and a pellet deflector arranged on an end of the shoot... | 11/13/2007 |
| 7270796 | Ammonium/ammonia removal from a stream In one embodiment, an ammonium removal method can comprise: removing a multivalent cation from a stream comprising ammonium to form a treated stream; converting the ammonium in the stream to ammonia by increasing the pH of the stream; and separating the ammonia from... | 09/18/2007 |
| 7261960 | Apparatus and method for internal stack temperature control A fuel cell includes a cathode layer, an anode layer and a heat exchange plate. The heat exchange plate is in heat exchange relationship with one of the anode layer and cathode layer. The heat exchange plate includes a series of heating channels formed therein. The ... | 08/28/2007 |
| 7258848 | Process for scrubbing ammonia from acid gases comprising ammonia and hydrogen sulfide The present invention provides a process for removing ammonia as an aqueous salt solution from an acid gas comprising ammonia and hydrogen sulfide. A strong acid, such as sulfuric acid, is used as a scrubbing agent to convert ammonia to an ammonium salt. Control of ... | 08/21/2007 |
| 7255845 | Process for conducting an equilibrium limited chemical reaction in a single stage process channel This invention relates to a process for conducting an equilibrium limited chemical reaction in a single stage process channel. A process for conducting a water shift reaction is disclosed. A multichannel reactor with cross flow heat exchange is disclosed. ... | 08/14/2007 |
| 7241373 | Nitrogen treating method There is provided a nitrogen treating method capable of treating nitrogen compounds efficiently. The method is a nitrogen treating method of treating nitrogen compounds in for-treatment water by electrolysis and performs a first treating step of producing ammonia fr... | 07/10/2007 |
| 7230134 | Method for the production of amines by reductive amination of carbonyl compounds under transfer-hydrogenation conditions This application claims the benefit of German priority Application No. 10138140.9, filed on Aug. 9, 2001, and International Application No. PCT/EP02/08748, filed on Aug. 6, 2002. The invention relates to the production of amines by the reaction of aldehydes or keton... | 06/12/2007 |
| 7125540 | Microsystem process networks Various aspects and applications of microsystem process networks are described. The design of many types of microsystems can be improved by ortho-cascading mass, heat, or other unit process operations. Microsystems having exergetically efficient microchannel heat ex... | 10/24/2006 |
| 7094384 | Combined methane decomposition and ammonia formation cell An ammonia synthesis process and apparatus are provided which are energy efficient and minimize greenhouse-gas-emission during the processing of natural gas and air. In the process a stream of natural gas is divided into two streams, one of which is mixed with air a... | 08/22/2006 |
| 7091043 | Method for measuring water concentration in ammonia Method and apparatus for measuring a water concentration in ammonia, comprising using ammonia having a water concentration of 10 ppm or less as a reference gas, introducing the ammonia at a constant flow rate into a multi-reflection long optical path gas cell, and m... | 08/15/2006 |
| 7077643 | Microcombustors, microreformers, and methods for combusting and for reforming fluids The present invention provides microcombustors, microreformers, and methods of steam reforming alcohols over a catalyst. The microcombustors can be manufactured with a very small size and can operate at very low temperature. Surprisingly superior results and propert... | 07/18/2006 |
| 7066986 | Apparatus for use in regenerating adsorbent An adsorber vessel for use in the adsorption of a component from a gas and subsequent regeneration by thermally induced desorption of the component comprises an inlet for regeneration gas having an inlet nozzle containing at least one heater element, and an outlet f... | 06/27/2006 |
| 7045486 | Catalyst structure and method of fischer-tropsch synthesis The present invention includes a catalyst structure and method of making the catalyst structure for Fischer-Tropsch synthesis that both rely upon the catalyst structure having a first porous structure with a first pore surface area and a first pore size of at least ... | 05/16/2006 |
| 7033562 | Ammonia recovery in the preparation of silazanes and polysilazanes Silazanes and/or polysilazanes are prepared by ammonolysis reaction in liquid anhydrous ammonia by introducing at least one halosilane into the ammonia. In addition to the silazane and/or polysilazane, an ammonolysis by-product also results. A substantially more eff... | 04/25/2006 |
| 7011799 | Method for deoxygenating ammonia with reduced oxides of iron and manganese A method for removing oxygen from ammonia at low temperature is described. In one embodiment, oxygen contaminated ammonia is contacted with a getter material that includes iron and manganese that sorbs oxygen to yield ammonia that is substantially oxygen free. In on... | 03/14/2006 |
| 7000427 | Process for cooling a product in a heat exchanger employing microchannels This invention relates to a process for cooling or liquefying a fluid product (e.g., natural gas) in a heat exchanger, the process comprising: flowing a fluid refrigerant through a set of refrigerant microchannels in the heat exchanger; and flowing the product throu... | 02/21/2006 |
| 6989047 | Method for the absorptive outward transfer of ammonia and methane out of synthesis gas The invention relates to a process for the absorptive separation of NH3 and CH4 from a gas under high pressure, which at least contains NH3, H2, N2 and CH4, using a high-boiling, physically acting and... | 01/24/2006 |
| 6969505 | Process for conducting an equilibrium limited chemical reaction in a single stage process channel This invention relates to a process for conducting an equilibrium limited chemical reaction in a single stage process channel. A process for conducting a water shift reaction is disclosed. A multichannel reactor with cross flow heat exchange is disclosed. ... | 11/29/2005 |
| 6969466 | Purification of ammonia Highly pure aqueous solution of ammonia, typically electronics grade for use in semiconductor manufacturing is prepared by passing a solution of ammonia through at least one cation exchange resin bed to remove substantially all of the cation contaminants; subsequent... | 11/29/2005 |
| 6969506 | Methods of conducting simultaneous exothermic and endothermic reactions Integrated Combustion Reactors (ICRs) and methods of making ICRs are described in which combustion chambers (or channels) are in direct thermal contact to reaction chambers for an endothermic reaction. Superior results were achieved for combustion chambers which con... | 11/29/2005 |
| 6946494 | Process and plant for the heterogeneous synthesis of chemical compounds A process for the heterogeneous synthesis of chemical compounds such as methanol and ammonia through catalytic conversion of the respective gaseous reactants that are made to pass through a first (2) and a second (3) reaction zone connected in series w... | 09/20/2005 |
| 6905666 | Process for the selective decomposition of hydrazine in a hydrazine/substituted hydrazine/water mixture The present invention relates to a process for the selective decomposition of hydrazine in a hydrazine/substituted hydrazine/water mixture. A catalyst chosen from the group consisting of nickel supported on silica/alumina, the nickel-nickel oxide mixture supported o... | 06/14/2005 |
| 6896772 | Method for separating ammonia from solutions containing caprolactam and ammonia A process for distillative removal of ammonia from solutions (I) which include a lactam and ammonia comprises effecting said removal in a distillation apparatus (a) at an absolute pressure of less than 10 bar. ... | 05/24/2005 |
| 6838069 | Apparatus and method for ammonia removal from waste streams Apparatus, materials, and methods for removing ammonia from fluid using metal hydroxides (e.g. zinc hydroxide) and metal cation loaded media (e.g. zinc loaded ion exchange resins); the metal hydroxides and metal cation loaded media may be regenerated with a weak aci... | 01/04/2005 |
| 6790264 | Control of ammonia emission from ammonia laden fly ash in concrete The present invention relates to a pozzolanic admixture containing ammonia-laden fly ash, method for making the pozzolanic admixture and method for controlling ammonia gas (NH3) emission from cementitious slurries using the pozzolanic admixture. The assoc... | 09/14/2004 |
| 6767524 | Process to produce nearly oil free compressed ammonia and system to implement it Process and system to produce nearly oil free ammonia using a rotary compressor with liquid injection from a separator tank where the liquid in the tank includes oil and liquid ammonia. The level of oil in the compressed ammonia leaving the separator is much lower t... | 07/27/2004 |
| 6755901 | Ammonia removal from fly ash A method and apparatus for the application of beat to remove ammonia compounds from fly ask, thereby making the fly ash a marketable product is disclosed. The method includes the steps of providing an amount of fly ash wherein at least a portion of the amount of fly... | 06/29/2004 |
| 6746654 | Dry and semi-dry methods for removal of ammonia from fly ash A method for removing ammonia from fly ash employs water mist (a water fog) or a flowing warm humid air stream to rid the fly ash of ammonia. Ozone alone or with other co-oxidants such as hydrogen peroxide are also used to rid fly ash of ammonia. ... | 06/08/2004 |
| 6733734 | Materials and methods for the purification of hydride gases Regenerable gas purifier materials are provided capable of reducing the level of contaminants such as oxygen and moisture in a hydride gas stream to parts-per-billion levels or sub-parts-per-billion levels. The purifier materials of this invention comprise a thin la... | 05/11/2004 |
