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| Number | Title | Issue Date |
| 7985393 | Pastillation of ammonium sulfate nitrate A process is presented for the production of ammonium sulfate nitrate. The process provides for producing a highly uniform product and having a substantially uniform size. The process includes reacting ammonium sulfate and ammonium nitrate to form an FASN slurry mel... | 07/26/2011 |
| 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 |
| 7204968 | Method of producing heat energy Energy in the form of heat is recoverable and controllable in a process that reacts an acid and a base in the presence of steam. The recovered heat energy can be used to vaporize water to form steam which when used in conjunction with a turbine will produce electric... | 04/17/2007 |
| 7189289 | Cleaning agent and method for cleaning heater tubes Disclosed is a cleaning agent for heater tubes, which is capable of eliminating deposits such as soot particulates in tubes installed in industrial heaters that typically use oil, coal or gas. The cleaning agent of the present invention is prepared by formulating a ... | 03/13/2007 |
| 7147830 | Stabilized ammonium nitrate granules The invention relates to a method for producing thermally and mechanically stable ammonium nitrate by dissolving in nitric acid 1–3% by weight of reticulated metal silicate, before treatment with ammonia. The ammonium nitrate granules produced by this method swell... | 12/12/2006 |
| 7014828 | Process for stabilizing ammonium nitrate The invention relates to a method for producing thermally and mechanically stable ammonium nitrate by dissolving in nitric acid 1–3% by weight of reticulated metal silicate, before treatment with ammonia. The ammonium nitrate granules produced by this method swell... | 03/21/2006 |
| 6958133 | Flue gas desulfurization process and apparatus for removing nitrogen oxides An apparatus and process for removing acidic gases and NOx from flue gases produced by utility and industrial plants. The process and apparatus convert NOx, and particularly nitric oxide, to nitrogen dioxide, which is then reacted to form a valuable byproduct. The p... | 10/25/2005 |
| 6949236 | Aminosulfonate product-treated nitrogen-containing salt particles Addition of an aminosulfonate product to an inorganic nitrogen-containing salt provides a composition of matter with improved properties. In particular, 2-acrylamido-2-methylpropanesulfonic acid and its derivatives can be added to ammonium nitrate to provide improve... | 09/27/2005 |
| 6902637 | Process for preparing free-flowing particulate phase stabilized ammonium nitrate A process for preparing free-flowing, phase-stabilized ammonium nitrate comprises the following steps. A solution of ammonium nitrate (12), a surfactant (13), a phase stabilizer (26), and an inert liquid (20) is prepared. The solution is ... | 06/07/2005 |
| 6887323 | Method of reducing density by means of gas generating agent This invention relates to a method of reducing density in an ammonium nitrate product. The method comprises providing a gas generating agent in the form of a water-insoluble solid compound capable of generating gas by chemical reaction and providing an ammonium nitr... | 05/03/2005 |
| 6787119 | Process for the preparation of dinitramidic acid and salts thereof The present invention provides an ecofriendly method for preparing dinitramidic acid and its salts by nitration of ammonium sulfamate with fuming nitric acid as a nitrating agent using solid acid catalysts selected from the group consisting of a montmorillonite clay... | 09/07/2004 |
| 6759022 | Flue gas desulfurization process and apparatus for removing nitrogen oxides An apparatus and process for removing acidic gases and NOx from flue gases produced by utility and industrial plants. The process and apparatus convert NOx, and particularly nitric oxide, to nitrogen dioxide, which is then reacted to form a valuable byproduct. The p... | 07/06/2004 |
| 6641622 | Process for preparing phase-stabilized ammonium nitrate A process for preparing phase stabilized ammonium nitrate comprises the following steps. A solution of ammonium nitrate (12), a phase stabilizer (26), and an inert liquid (20) is prepared. The solution is atomized to form a stream of droplets. The droplet... | 11/04/2003 |
| 6572833 | Ammonium nitrate bodies and a process for their production A process for the production of ammonium nitrate bodies in particulate form wherein an ammonium nitrate/water liquid mixture containing at least 92% and preferably at most 97.5% by weight ammonium nitrate, optionally with a proportion of the ammonium nitr... | 06/03/2003 |
| 6508995 | Process for producing phase-stabilized ammonium nitrate A method for producing phase-stabilized particulate ammonium nitrate (AN) through integration of a diamine complex of the metals copper, nickel or zinc into the crystal lattice of AN, wherein AN is reacted with inorganic CU, Ni and/or Zn compounds, is cha... | 01/21/2003 |
| 6495112 | Method and apparatus for removing oxygen from natural gas Oxygen is removed from natural gas by contacting oxygen-containing natural gas with nitric oxide under conditions sufficient to produce nitrogen dioxide.... | 12/17/2002 |
| 6419887 | Process for the treatment of residual liquors from the ammoniation and carbonation of alkali metal salts A process for the treatment of residual liquors from the ammoniation and carbonation of alkali metal salts containing ammonium salts, sodium salts, soluble sodium bicarbonate, ammonium bicarbonate and water and producing purified ammonium salts, comprisin... | 07/16/2002 |
| 6372191 | Phase stabilized ammonium nitrate and method of making the same A phase stabilized ammonium nitrate and a method of making the same wherein ammonium nitrate is stabilized through the presence of a stabilizing metal diammine dinitrate without requiring or necessitating the isolation of explosive metal tetrammine nitrat... | 04/16/2002 |
| 6365120 | Method for hardening granular inorganic salt compounds Solid inorganic particulate salts having increased hardness are produced by incorporating a novel additive composition comprised of ammonium sulfate and a naphthalene sulfonate compound.... | 04/02/2002 |
| 6290749 | Preparation of ultra-pure silver metal A method for preparing ultra-pure silver from a crude silver mixture containing metallic and/or non-metallic impurities, said method comprising; dissolving the crude silver mixture in nitric acid to form a crude silver nitrate solution; adding a first sel... | 09/18/2001 |
| 6117406 | Process for manufacturing ammonium salts A process for manufacturing ammonium salts using a reactor which includes a first tubular reaction chamber having at least one acid feed and at least on ammonia feed which are arranged in a first up-stream part of the reactor. At least one second ammonia ... | 09/12/2000 |
| 6022386 | Process for producing porous ammonium nitrate and ammonium nitrates produced According to this process, there is used a granulator (10) employing a rotary drum and a fluid bed which is usually employed for producing dense granules for the production of porous granules, For this purpose, the process comprises spraying in this granu... | 02/08/2000 |
| 5763652 | Process for producing a carboxylic acid A nitrile compound or an amide compound is hydrolyzed in the presence of an inorganic acid or other acidic catalyst or an alkali metal hydroxide or other basic catalyst, and the by-produced ammonium salt of the acidic catalyst or the produced salt of a ca... | 06/09/1998 |
| 5720794 | Ammonium nitrate particulate fertilizer and method for producing the same An improved particulate, ammonium nitrate is prepared with 2.0-6.0 percent by weight potassium sulfate. The potassium sulfate suppresses crystalline phase IV.revreaction.III transitions in the ammonium nitrate particles while undergoing temperature variat... | 02/24/1998 |
| 5540793 | Porous prilled ammonium nitrate A porous prilled product, particularly ammonium nitrate, and its method of preparation, which includes encapsulated microspheres, particularly polymer microballoons, which serve to reduce the density of the product. The invention also extends to an explosives ... | 07/30/1996 |
| 5330733 | Method for removing pollutants from a combustion gas A combustion gas is cooled a first time to about 110° C. in a first cooling chamber (3), up to 90% of the ashes is removed in a first precipitator (9) then the gas is cooled again in a second cooling chamber (10), to about 80° C.; in a reaction chamber ... | 07/19/1994 |
| 5316737 | Process for removing Nox and Sox from exhaust gas Exhaust gases containing oxides of nitrogen and sulfur from a fired process heater, a fossil fuel fired boiler, or a chemical process are diverted from a stack prior to admission to the atmosphere through a duct system containing heat exchangers that redu... | 05/31/1994 |
| 5292387 | Phase-stabilized ammonium nitrate and method of making same Ammonium nitrate is phase-stabilized against Phase IV.rarw..fwdarw.Phase III transition and the undesired volume changes associated with that phase change by including an effective amount of at least one metal dinitramide salt having the formula MXn | 03/08/1994 |
| 5192355 | Manufacturing and using nitrogen fertilizer solutions on a farm To make and use nitrogeneous fertilizer on a farm, nitrogen oxides are prepared in a continuous process from air or from ammonia in a reactor, with the ammonia either being transported to the farm or local site in a farming area or being prepared on the s... | 03/09/1993 |
| 5182027 | Process for treating ammonia and nitrite containing waters to reduce nitrogen oxide emissions therefrom A process is provided for controlling the emission of nitrogen dioxide from, and the growth of living organisms in, steam condensate cooling towers and catch basins used in conjunction with a condensate of steam derived from an ammonia containing geotherm... | 01/26/1993 |
| 5154752 | Suppression of fines during the granulation of ammonium nitrate The formation of dust or fines may be suppressed, during the granulation of ammonium nitrate having a nitrogen content of 28% to 34.5%, by a process in which ammonium nitrate is initially granulated to form a raw granulate containing fines, and thereafter... | 10/13/1992 |
| 5098683 | Potassium fluoride stabilized ammonium nitrate and method of producing potassium fluoride stabilized ammonium nitrate A phase stabilized ammonium nitrate mixed crystal structure is produced by the addition of potassium fluoride. Thus the undesirable abrupt expansion and contraction of ammonium nitrate in the temperature range of use in rocket motor propellants and explos... | 03/24/1992 |
| 5071630 | Phase-stabilization of ammonium nitrate by zinc diammine complexes A phase-stable, oxidizer-grade zinc diammine complex stabilized ammonium nitrate that retains its phase-stability, has a minimum hygroscopicity and cure interference, is prepared by dissolving an anhydrous zinc diammine complex, which may be either the su... | 12/10/1991 |
| 5063036 | Process for producing phase-stabilized ammonium nitrate In a process for producing phase-stabilized ammonium nitrate (AN), a diammine complex of Ni or Cu is incorporated into the AN lattice, in which the diammine complex is produced in a solid-state reaction of AN and metal oxide at 110° to 170° C. and in a ... | 11/05/1991 |
| 5021192 | Colloidal dispersions of cerium (IV) compound Highly concentrated, aqueous colloidal dispersions of a cerium (IV) compound, adapted for the impregnation of catalyst supports, are prepared by reacting an aqueous solution of a cerium (IV) salt with a base, to precipitate a certain cerium hydroxynitrate... | 06/04/1991 |
| 4952231 | Process for treating product of radiation treatment of ammonia-added effluent gas A solid product which comprises ammonium sulfate and ammonium nitrate and which contains a sulfamic acid compound is produced when an effluent gas having ammonia added thereto is irradiated with a radiation to thereby desulfurize and denitrate the effluen... | 08/28/1990 |
| 4927617 | Process of producing concentrated solutions of ammonium nitrate Process for producing concentrated solutions of ammonium nitrate by neutralization of nitric acid with ammonia in a pipe reactor. When the global flow of reactives corresponds to an output higher than 150 kg/h/cm2 neutralization is performed in the ... | 05/22/1990 |
| 4927793 | Proton conductive material and method of manufacturing thereof Proton conductive material comprising a compound of a monoclinic crystal structure which is in a reversibly reduced state from a compound of a similar monoclinic crystal structure represented by the general formula: Nax Aly Ti3+... | 05/22/1990 |
| 4800072 | Anhydrous cerous nitrate-ammonium nitrate complex and a process for its preparation from ceric ammonium nitrate A procedure for preparing anhydrous cerous nitrate ammonium nitrate complex comprising treating dried anhydrous ceric hexanitro ammonium complex (ceric ammonium nitrate) with a reducing agent such as ammonia whereby Ce+4 is reduced to Ce+3... | 01/24/1989 |
| 4756897 | Process for preparing concentrated byproduct nitrate solutions A process is provided for preparing concentrated aqueous solutions of byproduct nitrate compounds from dilute aqueous streams containing said byproduct nitrate compounds, calcium ions and anionic species capable of reaction therewith at elevated temperatu... | 07/12/1988 |
