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| Number | Title | Issue Date |
| 7736419 | Purification of polluted air A process for purifying polluted air includes passing the polluted air through a fluidized bed of micro-organism-containing particulate media. As the polluted air passes through the fluidized bed, organic pollutants therein are decomposed by the micro-organisms. Pur... | 06/15/2010 |
| 7329298 | Filter A filter for exhaust gases produced by an internal combustion engine, and a method of using such a mat on a vehicle. The filter is a mat of fibers enclosed within a metal gauze. Preferably, the mats are corrugated and spaced apart within a housing such that exhaust ... | 02/12/2008 |
| 7318857 | Dual flow wet electrostatic precipitator An apparatus for removing particulate matter from a gas stream containing particular matter, the apparatus comprising: a mist-producing element that mixes a gas stream entering the apparatus with liquid droplets; a down-flow Wet Electrostatic Precipitator (WESP) sec... | 01/15/2008 |
| 7238223 | Acoustical stimulation of vapor diffusion system and method An apparatus for removing constituents from a fluid stream is provided. The apparatus includes a duct, a collection device, a sorbent injector, and an acoustic generator. The duct has a fluid passageway to receive a fluid stream having constituents. The collection d... | 07/03/2007 |
| 7160520 | Air purifying equipment in particular for aircraft passenger compartment The invention concerns an air purifying equipment characterized in that it comprises means (10, 20, 30, 40) for injecting into the air to be purified a water spray laden with nascent oxygen. The invention is particularly useful for treating air in an aeroplan... | 01/09/2007 |
| 7147692 | Air cleaning apparatus and method for cleaning air The method involves contacting the air with an aqueous or non-aqueous liquid in a stand-alone system. The air may be brought into contact with the liquid using a number of different types of apparatus, including a packed column scrubber. The liquid may be non-evapor... | 12/12/2006 |
| 7068434 | Sheeting with composite image that floats Microlens sheetings with composite images are disclosed, in which the composite image floats above or below the sheeting, or both. The composite image may be two-dimensional or three-dimensional. Methods for providing such an imaged sheeting, including by the applic... | 06/27/2006 |
| 7048206 | Swirl pressure nozzle A swirl pressure nozzle with a nozzle body is proposed, in which an inner area is provided, which has a tapered section with a largest diameter and a smallest diameter. The nozzle has an inlet which leads into the section in an essentially tangential manner, which h... | 05/23/2006 |
| 6818043 | Vapor-phase contaminant removal by injection of fine sorbent slurries A method for efficiently removing vapor-phase contaminants from gas streams is described. A powdered adsorbent such as activated carbon is ground into a fine powder by wet grinding to form a slurry. Chemicals are added to the slurry to impregnate the sorbent to enha... | 11/16/2004 |
| 5618430 | Process for performing reactions The invention relates to a process for performing chemical and/or physical and/or biological reactions, in which the reactants are brought into operative connection with reaction particles 13 promoting or making possible the reaction. The invention furthe... | 04/08/1997 |
| 5338456 | Water purification system and method A water purification process for removing dissolved solids of the type that are normally present in a municipal water supply or the like. The process uses a forced draft decarbonator having an inlet and a product outlet, a vacuum degasifier having an inle... | 08/16/1994 |
| 5284557 | Method for desulfurizing exhaust smoke A method for desulfurizing an exhaust gas containing SO2 and NOx in accordance with a wet lime process, the aforesaid desulfurizing method being characterized by comprising the steps of drawing a part of an absorbing slurry, subjecti... | 02/08/1994 |
| 5246471 | Method and apparatus for gas liquid contact A gas-liquid contact system for absorption of gaseous contaminants in an absorptive liquid where contact is attained by a controlled flow relationship between the gas and the liquid forming a fluidized liquid mass for intimate contact between the two.... | 09/21/1993 |
| 5161910 | Pavement diamond grinder A pavement grinder for grinding and grooving pavement surfaces has a grinding carriage with a rotating arbor supporting a number of radial blades. The arbor is directly coupled to shafts of hydraulic motors with an adaptor between the arbor shaft and the ... | 11/10/1992 |
| 5018457 | Waste treatment system Method and apparatus for processing hazardous waste by incinerating the hazardous waste to a temperature sufficient to break down the hazardous waste; directing at least a portion of the exhaust gas stream produced by the incineration through a spray drye... | 05/28/1991 |
| 4874402 | Process for purifying and cooling a hot gas A process for cooling and cleaning a hot fly ash containing synthesis gas wherein the gas is first passed through a cooler, the bulk of the fly ash being separated from the cooled gas in a cyclone, whereupon the gas is further cleaned in a water scrubber.... | 10/17/1989 |
| 4834955 | Chemical formulation and combined process for inhibiting deposition and corrosion in cooling water and gypsum scaling in flue gas desulfurization scrubber systems An inhibitor formulation for inhibiting corrosion and deposition of calcium phosphate, calcium carbonate, and silt in a cooling water system and calcium sulphate (gypsum) scaling in a flue gas desulfurization system. The inhibitor formulation comprises po... | 05/30/1989 |
| 4793831 | Process for purifying flue gases A process for purifying flue gases by conducting the hot gases through a dry purification stage, and then through a pebble bed evaporator containing pebbles and a liquid. The flue gases then exit the pebble bed evaporator and are washed in a wet washing s... | 12/27/1988 |
| 4609388 | Gas separation process A process for separating acid gases such as CO2, H2 S, and SO2, other sulfur-containing molecules such as COS, and other relatively high boiling point impurities from lower boiling point components of a gas stream comprise... | 09/02/1986 |
| 4600561 | Method and device for separating harmful substances from a flue gas In the method and device for separation of harmful substances from a flue gas, in an absorption-heat exchanger arrangement both washing and also cooling of the flue gas is carried out, the flue gas being cooled below the dew point and this cooling process... | 07/15/1986 |
| 4584000 | Liquid spraying A method of treating a polluted gas e.g. desulphurizing a sulphur dioxide-containing flue gas is carried out by spraying the flue gas with a slurry of e.g. calcium hydroxide, under spray drying conditions. The spray device comprises a rotating cup compris... | 04/22/1986 |
| 4501722 | Absorption of pollutant material from a polluted gas In a method of absorbing pollutant material e.g. sulphur dioxide from a polluted gas, an aqueous suspension of a solid absorbent e.g. calcium hydroxide is sprayed into the gas; and the ambient conditions in the gas are such that all the water is evaporate... | 02/26/1985 |
| 4500333 | Aqueous electrolyte desiccation of substantially supercritical CO2 The drying of moist CO2 at conditions above or near the critical point of CO2 is improved by contacting the CO2 with an aqueous liquid electrolyte desiccant.... | 02/19/1985 |
| 4492593 | Sequential liquid solid desiccation of supercritical and nearcritical CO.sub. 2 The drying of moist CO2, at conditions above or near its critical point, is improved by contacting the CO2 first with an aqueous liquid desiccant and then with a permeable solid desiccant.... | 01/08/1985 |
| 4446109 | System for dry scrubbing of flue gas A flue gas dry scrubbing system achieves higher sulfur dioxide removal efficiency with a better utilization of alkali reagent chemicals as well as increased dry product recovery performance using a combination of spray drying with an alkali reagent slurry... | 05/01/1984 |
| 4375976 | Method and apparatus for recovering particulate matter from gas stream Filter apparatus and a method for removing dry combustible particulate material from a stream of gas in two steps of separation, utilizing a primary separator to remove the majority of the material from said stream of gas and a secondary filter apparatus ... | 03/08/1983 |
| 4270937 | Gas separation process A process for separating acid gases such as CO2, H2 S, and SO2, other sulfur-containing molecules such as COS, and other relatively high boiling point impurities from lower boiling point components of a gas stream comprise... | 06/02/1981 |
| 4227892 | Method and apparatus for removing micronized coal from steam Micronized coal is removed from coal-bearing steam by spraying stabilized petroleum oil into the steam and directing the resultant stream at a separation surface on which a coal-oil slurry is deposited and collected. Apparatus includes conduits which dire... | 10/14/1980 |
| 4148615 | Prevention of scale formation in wet lime scrubbers Proper cooling of fossil fuel power plant or smelter reverberatory furnace off gases for removal of sulfur dioxide by proper contacting of the same with lime or limestone, including the recycling of the scrubbing liquor.... | 04/10/1979 |
| 4119538 | Treatment of waste liquid and apparatus therefor and a fertilizer composition obtained thereby A process for treating a waste liquid which is obtained from a fermentation process, e.g., an alcohol fermentation, and contains organic and inorganic substances which are useful as fertilizer, is provided which includes combusting a concentrate of the wa... | 10/10/1978 |
| 4049399 | Treatment of flue gases Process and apparatus are disclosed for the treatment of flue gases to remove particulates, sulfur oxides, hydrogen sulfide and organic sulfur compounds using an alkaline scrubbing liquor containing activated carbon.... | 09/20/1977 |
| 4003722 | Process and arrangement for the removal of impurities from gases A cleansing liquid is conveyed along a first closed circuit which includes a scrubbing device. Here, the liquid comes into contact with and scrubs an impurity-containing gas so that the impurities in the gas are transferred to the liquid. When the concent... | 01/18/1977 |
| 3987148 | Treating gas and wetted granular material in panel bed A panel bed fitted for puffback cleaning is arranged so that gas entry faces of the granular material in the panel bed can be wetted by a liquid. Efficiency of treatment of a gas for removal of particulate matter by filtration is improved, especially for ... | 10/19/1976 |
| 3984217 | Wet gas cleaning system A wet gas cleaning system and process for removing particulates from a dirty process air stream including means for introducing the dirty process gas into a drying chamber and simultaneously therewith spraying or otherwise re-introducing the removed parti... | 10/05/1976 |
| 3935098 | Adsorbent process for heavy metals An adsorbent process for heavy metals or heavy metallic compounds, which comprises utilizing a resin prepared by a reaction between aldehydes, dithiocarbamate compounds and aromatic compounds having at least one radical selected from the group consisting ... | 01/27/1976 |
