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| Number | Title | Issue Date |
| 7316735 | Dust collector An apparatus, which collects particulate matter contained in a gas flowing through a flow path formed in a cylindrical shape having an outer surface and an inner surface, includes: an outer shell that forms the outer surface of the flow path; a ground electrode that... | 01/08/2008 |
| 7294169 | Electrical enhancement of fabric filter performance A method for operating a filter assembly having a filter medium includes applying a constant or nearly constant static DC potential to dust entering the filter assembly and the filter medium, passing dust-laden gas through the filter medium in a first direction thro... | 11/13/2007 |
| 7291271 | Meso-frequency traveling wave electro-kinetic continuous adsorption system The invention provides a non-cyclic, meso-frequency traveling wave electro-kinetic system capable of use in purification/separation and/or refrigeration/heat pump processes. In particular, the invention provides an adsorption system that can be used for fine or bulk... | 11/06/2007 |
| 7258723 | Particulate filter assembly and associated method A particulate filter assembly includes an electrode assembly, a particulate filter positioned in an electrode gap defined between two electrodes of the electrode assembly, a power supply electrically coupled to the electrode assembly, and a controller for controllin... | 08/21/2007 |
| 7233078 | Miniature hydro-power generation system A miniature hydro-power generation system may produce electric power from a flow of liquid. The miniature hydro-power generation system may include a housing that includes a plurality of paddles positioned to extend outwardly from an outer surface of the housing. Th... | 06/19/2007 |
| 7172645 | Gas filtration and storage using activated carbon/graphite foam monoliths An apparatus for separating a first gas from a mixture of the first gas and at least one second gas comprises a housing having an inlet port and an outlet port and an adsorbent which is positioned in the housing. The adsorbent comprising a carbon based foam monolith... | 02/06/2007 |
| 7146797 | Exhaust gas purification system An exhaust gas purification system including a catching reactor for attracting particulate matters in an exhaust gas from an engine by electrostatic force, a main exhaust path and an auxiliary exhaust path provided on the exit side of the catching reactor, a PM filt... | 12/12/2006 |
| 7119451 | Self-powered miniature liquid treatment system with ultraviolet dosing A liquid treatment system that may be self-powered includes a filter, an ultraviolet light source and a hydro-generator. A flow of liquid may be filtered with the filter and used to rotate the hydro-generator to generate electric power. The ultraviolet light source ... | 10/10/2006 |
| 7101422 | Polarity reversing circuit for electrostatic precipitator systems A gas separation apparatus using electrostatic precipitators and mechanical rappers is enhanced by the addition of an opposite polarity refreshing power supply and a switching arrangement. The switching components selectively disconnect the primary power supply and ... | 09/05/2006 |
| 7094322 | Use of self-sustained atmospheric pressure plasma for the scattering and absorption of electromagnetic radiation A self-sustained atmospheric pressure system for absorbing or scattering electromagnetic waves using a capillary discharge electrode configuration plasma panel and a method for using the same. Of particular interest is the application of this system to vary the leve... | 08/22/2006 |
| 7067936 | Self-powered miniature liquid treatment system with multiple liquid flow paths A liquid treatment system that may be self-powered includes a filter, an ultraviolet light source and a hydro-generator in a first flow path. The first flow path may provide treated liquid at a first outlet of the liquid treatment system. A second flow path included... | 06/27/2006 |
| 7048779 | Method of removing mercury from exhaust gases of coal fired power plants and associated apparatus A method of removing mercury from a coal fired power plant exhaust gas includes passing the exhaust gas through a bulk particle filter to remove coarse particles, introducing powdered activated carbon into the exhaust gas downstream of the bulk particle filter, intr... | 05/23/2006 |
| 7029517 | Devices and methods for hydrogen storage and generation Disclosed herein is a method for the storage of hydrogen comprising contacting a hydrogen storage composition with a gaseous mixture comprising hydrogen; and irradiating the hydrogen storage composition with radio frequency radiation or microwave radiation in an amo... | 04/18/2006 |
| 7014686 | Electrostatic air cleaner An air cleaner electrode assembly includes an elongated collector electrode and a plurality of elongated discharge electrodes arranged around the collector electrode. A fan may move air in a direction parallel to a length of the electrodes. The collector electrode m... | 03/21/2006 |
| 7008469 | Portable air filtration system utilizing a conductive coating and a filter for use therein A portable air filtration system includes a filter housing having an air inlet and outlet. The housing defines a filtration chamber between the inlet and outlet. The air filtration system uses an intake fan, an ionizing mechanism, a filter media, and a conductive co... | 03/07/2006 |
| 7001447 | Polarity reversing circuit for electrostatic precipitator system A gas separation apparatus using electrostatic precipitators and mechanical rappers is enhanced by the addition of an opposite polarity refreshing power supply and a switching arrangement. The switching components selectively disconnect the primary power supply and ... | 02/21/2006 |
| 6974494 | Apparatus and method using an electrified filter bed for removal of pollutants from a flue gas stream Pollutants in a flue gas stream from a dryer of products, such as wood chips, are removed by a pollution abatement system that includes an electrified filter bed unit for removing solid particulates. To prevent deteriorated operation of the electrified filter bed un... | 12/13/2005 |
| 6964695 | Method and equipment for removing volatile compounds from air A regenerable adsorber for removing VOCs from gas streams consists of a porous monolithic carbon which can be regenerated by heating by passing an electric current through it. ... | 11/15/2005 |
| 6660061 | Vapor purification with self-cleaning filter A vapor filtration device including a first electrode, a second electrode, and a filter between the first and second electrodes is disclosed. The filter is formed of dielectric material and the device is operated by applying a first electric potential bet... | 12/09/2003 |
| 6254787 | Method for establishing a fluid containing size-controlled particles Provided is a method for preparing a fluid containing size-controlled particles that is optimized with respect to use of a target fluid as a matrix fluid under conditions approximating actual conditions. In a preferred embodiment, size-controlled SiO... | 07/03/2001 |
| 6106592 | Wet electrostatic filtration process and apparatus for cleaning a gas stream The present invention relates to a gas cleaning process and apparatus for removing solid and liquid aerosols entrained in a gas stream. The gas to be treated is passed through a wetted, electrostatically charged filter media. In accordance with a preferre... | 08/22/2000 |
| 5938818 | Advanced hybrid particulate collector and method of operation A device and method for controlling particulate air pollutants of the present invention combines filtration and electrostatic collection devices. The invention includes a chamber housing a plurality of rows of filter elements. Between each row of filter e... | 08/17/1999 |
| 5893943 | Method and apparatus for decreased undesired particle emissions in gas streams The present invention discloses a process for removing undesired particles from a gas stream including the steps of contacting a composition containing an adhesive with the gas stream; collecting the undesired particles and adhesive on a collection surfac... | 04/13/1999 |
| 5738703 | Method to produce a substitute for peat moss This invention is a method to produce a substitute for peat moss comprising: mixing in a mixer adsorptive cellulosic material with an effective amount of an inoculum containing cellulose degrading microorganism such as lignin cellulose degrading bacteria ... | 04/14/1998 |
| 5603910 | Method for pollution emission reduction from glass melting furnaces A method for reducing pollution emissions from a glass melting furnace using electrostatic granular bed (EGB) technology. The granules in the EGB filter are themselves formed from an alkaline earth metal material. The granules react with sulfur compounds ... | 02/18/1997 |
| 5557923 | Method and device for removing particles from exhaust gases from internal combustion engines The invention concerns a method and device for removing particles, in particular soot particles, from exhaust gases produced by internal-combustion engines. The invention calls for the particles to be electrostatically charged by an electrode (4). The par... | 09/24/1996 |
| 5540755 | Catalytic sulfur trioxide flue gas conditioning A method for the selective control of the sulfur trioxide concentration in flue gases, to enhance the ash removal efficiency of electrostatic precipitators, which includes: catalytically converting a portion of the sulfur dioxide contained within the flue... | 07/30/1996 |
| 5529762 | Method for pollution emission reduction from glass melting furnaces A method for reducing pollution emissions from a glass melting furnace using electrostatic granular bed (EGB) technology is disclosed. In one embodiment, sorbent dust containing an alkaline earth metal material, e.g., calcium, is injected into a prereacto... | 06/25/1996 |
| 5505766 | Method for removing pollutants from a combustor flue gas and system for same A method for removing pollutants from a combustor flue gas. The method includes the steps of supplying sorbent to a baghouse having a filter bag therein until the filter bag is coated with a predetermined amount of sorbent and introducing the flue gas int... | 04/09/1996 |
| 4979364 | Diesel fuel exhaust gas filter Soot particles are separated from diesel exhaust gases and burned by passing them in a direction of flow through a cellular filter open at both ends and comprised of honeycomb-shaped cells, and subjecting the soot particles to an electric or magnetic fiel... | 12/25/1990 |
| 4795566 | Method for cleansing a contaminated medium in a contact reactor The invention relates to a method and an arrangement for enabling a contaminated medium to be cleansed in a contact reactor by introducing thereinto a pulverulent absorption material capable of reacting with contaminants in the medium, the medium and the ... | 01/03/1989 |
| 4737164 | Process for recovering contaminants from gases A process for recovering volatile inorganic and organic impurities from gases using a layer of fibrous activated carbon for adsorbing the impurities while applying an electric voltage, preferably a DC voltage, across the fibrous layer to improve its adsor... | 04/12/1988 |
| 4560393 | Method of and arrangement for enriching the nitrogen content of an effluent gas in a pressure swing adsorption system A method of and an arrangement for increasing the enrichment of nitrogen in an effluent gas obtained from a pressure swing adsorption system includes electrostatically negatively charging oxygen molecules in a feed gas such as air, and attracting the nega... | 12/24/1985 |
| 4542000 | Method for treating gas streams A gaseous constituent, such as sulfur dioxide, is removed from a gas stream in a granular bed filter containing granules coated with a sorbent material which is reactive with the gaseous constituent. Granules carrying reacted sorbent material are removed ... | 09/17/1985 |
| 4481017 | Electrical precipitation apparatus and method An electrostatic precipitator having improved collection efficiency for suspended particles having either high or low electrical resistivities is provided. The precipitator utilizes porous collecting surfaces which permit passage of gas while retaining su... | 11/06/1984 |
| 4406672 | Process and installation for the intermittent cleaning of dust-laden crude gases An intermittently operated apparatus for cleaning dust laden gases has a gas-tight housing, a pair of spaced gas-permeable walls holding a filter bed consisting of granular filter material. A centrally located conveying pipe is mounted to the housing for ... | 09/27/1983 |
| 4357151 | Electrostatically augmented cartridge type dust collector and method A method and apparatus for separating particulate matter from a gas stream wherein dirty gas is moved first through a corona discharge zone, such as that provided by a plurality of rod-like electrodes each having a sharp-edged corona producing ribbon-like... | 11/02/1982 |
| 4308036 | Filter apparatus and method for collecting fly ash and fine dust Fly ash and fine dust in a gas stream from a coal combustor, for example, are efficiently collected in a 2-stage, tubular, granular bed filter. The stages of the filter are arranged one above the other so that the granules may move from the upper stage to... | 12/29/1981 |
| 4222748 | Electrostatically augmented fiber bed and method of using A method and apparatus for removal of particulates from gas streams with high collection efficiency on even submicron particulates. The apparatus includes a grounded fiber bed of 50 to 1000 micron average diameter fibers packed to a bed voidage of at leas... | 09/16/1980 |
| 4147522 | Electrostatic dust collector A method and apparatus for separating particulate matter from a gas stream wherein dirty gas is moved through an electrostatic charging zone such as an electrostatic precipitator and then is moved through a filter of foraminous material such as a fabric f... | 04/03/1979 |
