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| Number | Title | Issue Date |
| 7943105 | Sulfur removal using ferrous carbonate absorbent Finely divided ferrous carbonate absorbent, siderite granules or absorbent particles made by mixing, agglomerating and shaping finely powdered ferrous carbonate, preferably siderite, in combination with minor effective amounts of water or an optional binder, followe... | 05/17/2011 |
| 7850936 | Dry sulfur dioxide (SO) scrubbing A system for removing sulfur dioxide (SO2) from SO2 laden flue gas resulting from the burning of fossil fuel, includes an absorber and first and second separators. The absorber captures SO2 from a flow of the SO2 laden flu... | 12/14/2010 |
| 7846408 | Compositions, methods, and systems for managing total sulfide Certain exemplary embodiments can involve contacting a predetermined portion of a medium and a reaction product resulting from a reaction between predetermined reactants that can include a predetermined active ferric chelate and a nitrate/nitrite, the contacting occ... | 12/07/2010 |
| 7744841 | Sulfur removal using ferrous carbonate absorbent Finely divided ferrous carbonate absorbent, siderite granules or absorbent particles made by mixing, agglomerating and shaping finely powdered ferrous carbonate, preferably siderite, in combination with minor effective amounts of water or an optional binder, followe... | 06/29/2010 |
| 7641878 | Fly ash beneficiation systems with sulfur removal and methods thereof A system and method for beneficiation of fly ash particles which at least partially reduces sulfur emissions includes at least one mixing reactor with a chamber and at least one exhaust, at least one fly ash source connected to provide fly ash particles to the chamb... | 01/05/2010 |
| 7442352 | Flue gas purification process using a sorbent polymer composite material Process for removing sulfur oxides, mercury vapor, and fine particulate matters from industrial flue gases that contain such pollutants. Pollutants are removed by modules, which contain microporous adsorbent (i.e., sorbent) material held within a polymer matrix. The... | 10/28/2008 |
| 7427385 | Systems and processes for reducing the sulfur content of hydrocarbon streams Systems and processes for removing a first sulfur compound from a hydrocarbon stream. The systems and process utilize at least one reaction vessel incorporating a hydrolysis catalyst suitable for hydrolyzing the first sulfur compound to a second sulfur compound. The... | 09/23/2008 |
| 7425314 | Process for removing sulphur compounds including hydrogen sulphide and mercaptans from gas streams A process for the removal of hydrogen sulfide and mercaptans from a gas stream containing a high ratio of mercaptans to hydrogen sulfide, wherein the first step removes hydrogen sulfide by washing the gas stream with an aqueous washing solution comprising water, a p... | 09/16/2008 |
| 7404940 | Method for flue-gas reduction of pollutants in combustion processes Systems and methods for reduction of pollutants in combustion processes using combined rotating opposed fired air (ROFA) and fuel injection sorbents (FSI) for increased chemical reactivity. ... | 07/29/2008 |
| 7384615 | Method oil shale pollutant sorption/NOreburning multi-pollutant control A method of decreasing pollutants produced in a combustion process. The method comprises combusting coal in a combustion chamber to produce at least one pollutant selected from the group consisting of a nitrogen-containing pollutant, sulfuric acid, sulfur trioxide, ... | 06/10/2008 |
| 7368595 | Process for the production of light-colored isocyanates The invention relates to an improved process for the production of isocyanates by the reaction of an amine or a mixture of two or more amines with phosgene, the improvement involving the phosgene containing less than about 100 ppm of sulfur in elemental or bound for... | 05/06/2008 |
| 7361319 | Mixed metal oxide sorbents The present invention is directed to methods for reducing SOx, NOx, and CO emissions from a fluid stream comprising contacting said fluid stream with a compound comprising magnesium and aluminum and having an X-ray diffraction pattern displaying at least a reflectio... | 04/22/2008 |
| 7357905 | Process for eliminating sulfur-containing compounds by direct oxidation The invention relates to a process for direct oxidation into sulfur and/or into sulfate of sulfur-containing compounds that are contained in an amount that is less than 10% by volume in a gas, in which said gas is brought into contact with an oxidation catalyst that... | 04/15/2008 |
| 7354560 | Process for the production of hydrogen Process for the removal of organic and/or inorganic sulfur from an ammonia stream by passing said stream through a fixed bed of sulfur absorbent in a sulfur absorber and withdrawing a sulfur-free ammonia stream, wherein said sulfur absorbent is a catalyst having a t... | 04/08/2008 |
| 7332143 | Targeted duct injection for SOcontrol NOx and SO3 emissions from combustion of a sulfur containing carbonaceous fuel are reduced simultaneously. The combustion gases comprising NOx and SO2 are mixed with a NOx control agent into the combustion gases... | 02/19/2008 |
| 7323151 | Process for the selective removal of sulphur compounds from synthesis gas A process for the selective removal of sulphur compounds from synthesis gas being rich in carbon monoxide and containing hydrogen, carbon monoxide and containing hydrogen, carbon dioxide and steam comprising contacting the synthesis gas at a maximum contact temperat... | 01/29/2008 |
| 7311887 | Hybrid wet and dry electrostatic precipitator ammonia scrubber A process reduces SOx emissions in a flue gas stream by adding a wet collector plate section to an existing electrostatic precipitator (ESP) or by converting the last field of an existing ESP to wet operation. To achieve the conversion, the last field or ... | 12/25/2007 |
| 7311891 | Process for the recovery of sulfur from Claus tail gas streams Recovering sulfur from a gas stream containing hydrogen sulfide by oxidizing the gas stream to convert the hydrogen sulfide in the gas stream to sulfur oxide, and thus form a sulfur oxide enriched gas stream. The sulfur oxide enriched gas stream is contacted with a ... | 12/25/2007 |
| 7276217 | Reduction of coal-fired combustion emissions A process for mitigation of fouling deposits within a combustion zone, capturing of toxic metal emissions, and reduction of visible sulfur emissions attributable to sulfuric acid mist during coal combustion. SO3 formed during coal combustion is reduced by... | 10/02/2007 |
| 7261868 | Process and apparatus for the decomposition of fluorine compounds Fluorine compounds such as C2F6, CF4, CHF3, SF6 and NF3, are made to contact with a fluorine compound decomposition catalyst and a catalyst for the decomposition of at least one of CO, SO2F... | 08/28/2007 |
| 7250072 | Removal of sulfur-containing impurities from volatile metal hydrides Method for the purification of a volatile metal hydride comprising obtaining a volatile metal hydride feed containing one or more acidic impurities, one of which is a sulfur-containing impurity; contacting the feed with an alkaline material and reacting at least a p... | 07/31/2007 |
| 7129194 | Catalyst system with improved corrosion resistance An improved catalyst system that includes a metal support structure and an anti-corrosive layer on the metal support structure, and has improved resistance to corrosion and other degradation under corrosive environments. Typically, a catalyst supporting layer is app... | 10/31/2006 |
| 7087102 | Process for purification of germane A process and system for the synthesis and/or purification of crude germane to provide a purified germane product are disclosed herein. In one aspect of the present invention, there is provided a process for making a purified germane product containing less than 1 v... | 08/08/2006 |
| 7078005 | Process for the reduction or elimination of hydrogen sulphide The invention provides a process for reducing the level of hydrogen sulphide in a liquid or gas by treatment of the liquid or gas with an H2S-scavenger product derivable by the reaction of a carbonyl group-containing compound with an alcohol, thiol, amide... | 07/18/2006 |
| 7060233 | Process for the simultaneous removal of sulfur and mercury A process for removing hydrogen sulfide, other sulfur-containing compounds and/or sulfur and mercury from a gas stream contaminated with mercury, hydrogen sulfide or both. The method comprises the step of selective oxidation of hydrogen sulfide (H2S) in a... | 06/13/2006 |
| 7060229 | Sorbent re-circulation system for mercury control A flue gas purification system comprising in the flue gas stream an electrostatic precipitator, mercury sorbent injection and a two-stage electrostatic separator, and wherein the mercury sorbent injection is positioned between the electrostatic precipitator and the ... | 06/13/2006 |
| 7033548 | System and process for removal of pollutants from a gas stream System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the ... | 04/25/2006 |
| 7033556 | Method and apparatus for cake-forming granular-bed filtration There is provided a granular-bed filter for cleaning a gas containing fine particulate matter (“dust”). A multiplicity of vertically disposed filter trays are assembled to form a “panel.” In each filter tray, an inclined porous plate supports a bed of granul... | 04/25/2006 |
| 7029639 | Desulfurizer comprising activated carbon and method of desulfurization A desulfurization apparatus for desulfurizing a flue gas containing sulfur oxides through contact with a porous carbon material. The carbon material, which is provided in a desulfurization tower, is at least one species selected from activated carbon and activated c... | 04/18/2006 |
| 7022296 | Method for treating flue gas A multiple-field precipitator, flue-gas treating device, in accordance with the principles of the invention, includes a first section having a dual-function, sensible-cooling heat exchanger/electrostatic precipitator, a second section having a wet electrostatic prec... | 04/04/2006 |
| 7014689 | Body for isolating a constituent contained in a gas mixture The invention relates to bodies for separating out a component contained in a gas mixture. The gas mixtures may, for example, be crude gases which contain hydrocarbons, such as natural gas, or exhaust gas. According to the object which is set, the bodies according t... | 03/21/2006 |
| 6997119 | Combustion emissions control and utilization of byproducts A process for controlling both fireside ash deposits and corrosion, and fouling, corrosion, and emissions due to SO3 formation within a fossil-fuel-fired combustion system, such as a furnace forming part of an electrical power generating plant. A solution... | 02/14/2006 |
| 6998100 | Sulfur oxide sorption with layered chlorite-type contact solids Chlorite-like phyllosilicate materials are found useful as SOx sorbents. A novel process of sulfur oxide sorption is provided utilizing these layered materials as contact solids. Typical industrial applications include sulfur removal from fluid catalyst c... | 02/14/2006 |
| 6974565 | System and process for removal of pollutants from a gas stream System for removal of targeted pollutants, such as oxides of sulfur, oxides of nitrogen, mercury compounds and ash, from combustion and other industrial process gases and processes utilizing the system. Oxides of manganese are utilized as the primary sorbent in the ... | 12/13/2005 |
| 6967005 | Circulating fluidized bed reactor with selective catalytic reduction A CFB reactor or combustor having a selective catalytic reduction (SCR) system (150) employed downstream of the CFB reactor or combustor furnace (10) together with a dry scrubber system (220) to achieve enhanced NOx reduction. ... | 11/22/2005 |
| 6960548 | Method for regenerating used absorbents derived from treatment of thermal generator fumes Process and device for regeneration of a used absorbent from a desulfurization zone or from the desulfurization of a gas containing sulfur oxides, comprising regeneration simultaneously with filtering of the absorbent, in a reducing atmosphere, wherein partial combu... | 11/01/2005 |
| 6951635 | Zinc oxide-based sorbents and processes for preparing and using same Zinc oxide-based sorbents, and processes for preparing and using them are provided, wherein the sorbents are preferably used to remove one or more reduced sulfur species from gas streams. The sorbents contain an active zinc component, optionally in combination with ... | 10/04/2005 |
| 6948308 | Combatting air pollution In the control of pollutants such as NOx in the exhaust gases from internal combustion engines, ozone is reacted with NO to form NO2, which is then reduced catalytically to N2. ... | 09/27/2005 |
| 6946108 | Flue gas desulfurization apparatus and flue gas desulfurization system, and method for operating flue gas desulfurization apparatus A flue gas desulfurization apparatus includes at least one activated carbon fiber board 20 provided in a catalyst unit 6, the board being formed by alternatingly juxtaposing one or more plate-like activated carbon fiber sheets and one or more corrugate... | 09/20/2005 |
| 6942841 | Process for treating fluorine compound-containing gas A gas stream containing at least one fluorine compound selected from the group consisting of compounds of carbon and fluorine, compounds of carbon, hydrogen and fluorine, compounds of sulfur and fluorine, compounds of nitrogen and fluorine and compounds of carbon, h... | 09/13/2005 |
