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7575612 |
Methods and systems for gasification system waste gas decomposition
Methods and systems for decomposing ammonia in a gasifier are provided. The system includes a gasifier including a pressure vessel and an injection nozzle extending through the pressure vessel and...
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7537744 |
Process for ammonia recovery
An improved process for ammonia recovery is provided for the recovery of substantially pure ammonia for use in industrial processes. In this improved method, specific raw materials and/or specific...
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7517969 |
Process for isolating nucleic acid with chaotrope agents and ammonium compounds
A process for isolating nucleic acid from a nucleic acid-containing sample, which comprises: (a) providing a chaotrope; (b) providing a nucleic acid binding solid phase capable of binding nucleic...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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...
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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 NH 3 and CH 4 from a gas under high pressure, which at least contains NH 3 , H 2 , N 2 and CH 4 , using a high-boiling,...
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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 (...
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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...
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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...
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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...
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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 (NH 3 ) emission from...
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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...
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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...
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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...
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6709573 |
Process for the recovery of hydrocarbon fractions from hydrocarbonaceous solids
Process and apparatus for extraction of oil and hydrocarbons from crushed hydrocarbonaceous solids, such as oil shale, involving the pyrolyzing of the crushed solids with liquid hydrocarbon and syn...
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6700093 |
Dielectric barrier discharge apparatus and module for perfluorocompound abatement
A dielectric barrier discharge apparatus and module for perfluorocompound (PFC) abatement. The apparatus includes a housing, first dielectric tube disposed in the housing, a second dielectric tube...
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6696026 |
Process for combined production of ammonia and urea
A process for the combined production of ammonia and urea of the type comprising an ammonia synthesis reactor ( 2 ), a urea synthesis reactor ( 5 ) and a urea recovery section ( 21 ) stands out for...
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6638398 |
Methods for the evaporation of an aqueous solution containing ammonia
A method including evaporating aqueous solutions containing ammonia, adding an acid to the evaporated vapor flow to form an ammonium salt, and condensing the vapor flow to form a liquid containing...
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6555083 |
Method of preparation of sealed gas chambers
A method of filling a sealed elastomer chamber ( 2, 6, 8 ) with gas is provided, wherein the chamber is filled with the gas chemically produced by thermal decomposition of a gas producing material...
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6534027 |
Process for producing ammonia with ultra-low metals content
Commercial grade ammonia is purified for use in production of semiconductors by initially passing the liquid ammonia through a liquid phase oil separation system. This removes the vast majority of...
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6524544 |
Self-regenerative process for contaminant removal from ammonia
A method and apparatus for the decontamination of fluid ammonia are described. Liquid or gaseous ammonia is purified of contaminants by passage through an adsorbent bed, the contaminants...
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6517794 |
Method for removing nitrogen oxides from an oxygen-containing flue gas stream
A method for removing nitrogen oxides from a lean flue gas. The method is carried out by: a) treating the flue gas in an electrical gas discharge, b) passing the thus treated flue gas over a basic...
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6491885 |
Exhaust gas processing method
An ammonia generating method characterized by generating ammonia by the contact hydrolysis of urea by contacting at 200° C. or more an aqueous solution of urea with a contact hydrolysis catalyst...
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6476084 |
Process for recycling heterogeneous waste
A process is provided for recycling heterogeneous waste including the initial step of subjecting the heterogeneous waste to pyrolysis to produce a synthesis gas stream comprising at least carbon...
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6471932 |
Process for the plasma-catalytic production of ammonia
A process is disclosed for the plasma-catalytic production of ammonia. A gas stream containing nitrogen and water vapor is passed through an electrical gas discharge in the discharge space of which...
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6290066 |
Method for removal of ammonia from fly ash
A method for removing ammonia and ammonia compounds from fly ash and other combustion by-products is provided. The method may be performed with raw or processed fly ash, or it may be performed in...
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6228341 |
Process using plate arrangement for exothermic reactions
A process and apparatus cools a heat exchange type reaction zone by passing the incoming reactants through heat exchange channels in heat exchange relationship with the reaction zone. The invention...
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6190632 |
Method and apparatus for the production of ammonia utilizing cryogenic rectification
A system for producing ammonia by integrating blast furnace ironmaking with ammonia production wherein cryogenic rectification links the two systems enabling the production of ammonia synthesis gas...
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6183720 |
Process and apparatus for producing high-purity chemicals for the microelectronics industry
A process for producing a high-purity liquid chemical is provided. A chemical gas is successively purified over first and second purification columns by passing, countercurrently, a scrubbing...
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6117407 |
Method for the generation of ammonia
A method for the generation of ammonia from dinitrogen is provided including reacting a three coordinate, low oxidation state transition metal complex with dinitrogen under substantially...
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6093380 |
Method and apparatus for pollution control in exhaust gas streams from fossil fuel burning facilities
This invention relates to pollution control requirements for fossil-fuel burning facilities, such as power plants, and, more particularly, to a method for providing a safe and economical supply of...
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6083468 |
Method of manufacturing a hydrogenation catalyst
A hydrogenation catalyst is prepared by reduction of platinum in an oxidation state of not less than two using a reducing agent in an aqueous medium in the presence of a carbon-containing support...
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6077494 |
Method for removing ammonia from ammonia contaminated fly ash
A method for removing ammonia from coal fly ash contaminated by ammonium salts is disclosed. The method involves the addition of small amounts of water, and in some cases, small amounts of an...
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6037459 |
Dinitrogen cleavage
A method for the generation of ammonia from dinitrogen is provided including reacting a three coordinate, low oxidation state transition metal complex with dinitrogen under substantially...
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6002059 |
Process for upgrading natural gas
The invention discloses a method for converting methane to higher order hydrocarbons. This method includes synthesizing ammonia from natural gas and nitrogen in the presence of a source of...
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6001223 |
On-site ammonia purification for semiconductor manufacture
Highly purified ammonia for use in semiconductor manufacturing is prepared on-site by drawing ammonia vapor from a liquid ammonia reservoir, passing the vapor through a filter capable of filtering...
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5968232 |
Method for ammonia production
A process for the separation of ammonia dissolved in a gaseous solvent is used to recover ammonia during the production of ammonia from a synthesis gas. The process may be used to extract and...
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5929282 |
System and method for disposal of hydrazine propellants and other energetic materials
An apparatus and method for converting hydrazine, substituted hydrazines and/or other nitrogen-containing explosive materials, particularly unsymmetric dimethyl hydrazine (UDMH), to ammonia or...
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5800798 |
Process for producing fuel gas for fuel cell
A process of producing a fuel gas for fuel cells, which comprises the steps of: a) treating kerosine having a sulfur content not higher than 5 ppm with a desulfurizing agent to reduce the sulfur...
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5779861 |
Method for treating process condensate
An apparatus and method for treating chemical production plant process condensate and low pressure purge gas such that a contaminant-rich stream is recoverable from the condensate and purge gas,...
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5767383 |
Apparatus for automated measurement of ammonia concentration in a gas mixture
A process for automated measurement of ammonia in a gas mixture containing ammonia gas and one or more water-insoluble gases includes providing a water reservoir adapted for supplying water...
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5746993 |
Process for manufacture of ultra-high purity ammonium hydroxide
A process for obtaining an ultra-high purity aqueous ammonium hydroxide solution according to the invention includes the steps of reacting highly pure, typically electronics grade, ammonia (NH 3 )...
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5560895 |
Method of use of a hydrogenation catalyst based on a platinum metal partially poisoned with finely divided sulfur
A process of use of hydrogenation catalyst, obtainable by carrying out essentially the following steps: (a) treatment of a platinum metal salt with finely divided sulfur followed by (b)...
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