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| Number | Title | Issue Date |
| 7938885 | Device for the removal of soot dust of fuel oil combustion A device designed for the removal of soot dust of fuel oil combustion. The device is based on the two-stage wet-electrostatic dust removal-desulfurization device, with different numbers of layers of the mesh screen being installed in the wet type dust removal-desulf... | 05/10/2011 |
| 7459009 | Method and apparatus for flue gas desulphurization An apparatus for removing particulate matter from a gas stream containing particulate matter, the apparatus including: a mist-producing element that mixes a gas stream entering the apparatus with liquid droplets; and a down flow Wet Electrostatic Precipitator (WESP)... | 12/02/2008 |
| 7442234 | Device and method for removing undesirable gases and particles from the air A device and a method for removing undesirable gases and particles from the air are provided. The device includes a purifying chamber through which air (1) to be purified is arranged to pass and has an entrance end provided with a zone (2) producing wa... | 10/28/2008 |
| 7360724 | Electrostatic spray nozzle with internal and external electrodes A nozzle is provided for use in a dynamic electrostatic air filter, in which the nozzle includes an internal electrode that charges a semiconductive liquid, and includes an external electrode that assists in breaking the liquid into droplets in a predetermined direc... | 04/22/2008 |
| 7332002 | Low sulfur coal additive for improved furnace operation The present invention is directed to additives for coal-fired furnaces, particularly furnaces using a layer of slag to capture coal particles for combustion. The additive(s) include iron, mineralizer(s), handling aid(s), flow aid(s), and/or abrasive material(s). The... | 02/19/2008 |
| 7326284 | Contamination control system and air-conditioning system of a substrate processing apparatus using the same An air-conditioning system of a substrate processing apparatus includes an air inlet line for providing air to a clean room. A contamination control apparatus for removing contaminants in the air is connected to the air inlet line. A controller controls temperature ... | 02/05/2008 |
| 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 |
| 7318288 | Apparatus and method using an electrified filter bed for removal of pollutants from a flue gas stream A pollution abatement apparatus comprises an electrified filter bed preceded by a cyclonic mix chamber to remove wood fines and fly ash in a flue gas stream from a wood chip dryer heated by hot gas from an energy system that includes a wood waste combustor. The cycl... | 01/15/2008 |
| 7300496 | Methods and apparatus for air pollution control A method for filtering particle-laden gas includes electrostatically precipitating particles from the particle-laden gas to produce a gas having residual particulates, agglomerating the residual particulates, and using a fabric filter to filter the agglomerated resi... | 11/27/2007 |
| 7288140 | Wet process gas treatment apparatus In a wet-process gas treatment method of treating an acid gas by using at least two treating columns connected in series, a ratio of the concentration of an acid gas at an outlet to a concentration of the acid gas at an inlet of a first treating column is set higher... | 10/30/2007 |
| 7270697 | Electrostatic precipitator Electrostatic precipitators, including wet electrostatic precipitators, having a bank of conductive tubes which receive a gas stream having entrained particulates and an electrode connected to an electric current, wherein the tubes each include an internal restricti... | 09/18/2007 |
| 7267708 | Rigid electrode ionization for packed bed scrubbers An ionizing particulate scrubber is provided for the removal of particulate from a gaseous exhaust stream, said scrubber including two sections: a charging section and a collection section. The charging or ionizing section includes one or more cylindrical tubular gr... | 09/11/2007 |
| 7258730 | Air purifier Disclosed is an air purifier with a small size, having an excellent air purifying capacity, capable of preventing a large amount of ozone from being generated, the ozone harmful to a human body. The air purifier includes a case, a pair of discharge electrodes provid... | 08/21/2007 |
| 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 |
| 7235120 | Electrostatic aerosol filtering apparatus A battery (16) drives an electric motor (17) which in turn drives a fan (18). A circuit board (20) controls the operation of the motor and fan to maintain the flow rate. Air is drawn through an inlet (22) and out through a vent ( | 06/26/2007 |
| 7160348 | Mist elimination hood A mist elimination device in the form of a hood for the removal of moisture from a gas stream treated by a WESP includes a series of gutters on the outer surface of the hood to trap liquid droplets and direct the moisture to channels to drain to the lower region of ... | 01/09/2007 |
| 7160358 | Pollution control in wood products dryer Contaminant laden gas streams from wood product dryer operations, and other sources, are purified. The gas stream first is saturated with moisture by contacting the gas stream with fine liquid droplets which entrain particulates. The gas stream then is subjected to ... | 01/09/2007 |
| 7156902 | Wet electro-core gas particulate separator A gas separation apparatus combines the technologies of electrostatic precipitators and centrifugal particle separators into a single unit. At an inlet into the gas separation apparatus, a water spray is introduced into the gas stream. The water spray may include va... | 01/02/2007 |
| 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 |
| 7132009 | Air filter device for air exhauster An air filter device for an air exhauster includes at least one static electricity dust-collecting module, at least one water-cleaning module and a casing. The static electricity dust-collecting module is operated to generate static electricity for electrically attr... | 11/07/2006 |
| 7101424 | Ionizer and use thereof in an exhaust gas purifying system for moisture-laden gases In an ionizer of an exhaust gas ionization system for ionizing moisture-laden gases in a channel comprising a nozzle plate having circular nozzle openings through which the gases are conducted, a high voltage electrode support grid arranged downstream of the nozzle ... | 09/05/2006 |
| 7094382 | Method and a device for the separation of sulphur dioxide from a gas A device (1) for separating sulphur dioxide from a gas has an inlet (2) for the gas (4) and an outlet (42) for gas (40), from which sulphur dioxide has been separated. An apertured plate (20) is arranged between the inlet ( | 08/22/2006 |
| 7094274 | Use of manganese compounds to improve the efficiency of and reduce back-corona discharge on electrostatic precipitators Manganese is added to a combustion fuel, combustion air, or the resulting combustion exhaust gas in order to improve the efficiency of an electrostatic precipitator in collecting the resulting fly ash. Further, manganese or other flame suppressant is added to a fuel... | 08/22/2006 |
| 6955075 | Portable liquid collection electrostatic precipitator A portable liquid collection electrostatic collection precipitator for analyzing air is provided which is a relatively small, self-contained device. The device has a tubular collection electrode, a reservoir for a liquid, and a pump. The pump pumps the liquid into t... | 10/18/2005 |
| 6858064 | Apparatus for the electrostatic cleaning of gases and method for the operation thereof In an apparatus for the purification of a gas which apparatus includes a three section conduit with an ionization and cleaning section in which particles contained in water-saturated air are ionized and then conducted through a cha... | 02/22/2005 |
| 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 |
| 6797035 | Oxidizing additives for control of particulate emissions The present invention discloses a process for removing undesired particles from a gas stream including the steps of contacting an additive containing nitrate and/or nitrite anions with the gas stream; collecting the undesired particles and additive on a collection s... | 09/28/2004 |
| 6238459 | Ultra-high particulate collection of sub-micron aerosols A method and apparatus for ultra-high particulate collection of sub-micron aerosols in a fuel gas conveys the fuel gas to a first venturi scrubber for removing a relatively large amount of particulates and leaving a smaller particulate load which is not r... | 05/29/2001 |
| 6156098 | Charged droplet gas scrubber apparatus and method Gas scrubbing apparatus and method, employing highly charged liquid droplets for removal of both particulates and pollutant gases from the gas to be cleaned, allowing scrubbing of uncharged particulates by means of monopole--dipole attractive forces betwe... | 12/05/2000 |
| 6120580 | Method for testing systems designed for NOx reduction in the combustion of carbonaceous fuels A method for the in-situ predetermination of the effects of NOx reduction systems on selected components. This determination can yield quick, inexpensive and accurate results for a number of characteristics, for example: catalyst longevity; efficiency wit... | 09/19/2000 |
| 6117403 | Barrier discharge conversion of Hg, SO2 and NOx A process and apparatus for reducing particulate, nitrogen oxides ("NOx"), sulfur dioxide ("SO2 "), and mercury ("Hg") emissions from the combustion exhaust of fossil fuel fired plants while producing an end product that is commercially useful,... | 09/12/2000 |
| 6110256 | Apparatus and method for removing particulates and corrosive gases from a gas stream Apparatus and method for removing particulates and corrosive gases from a gas stream includes the serial use of a condensing wet electrostatic precipitator section for removing smaller particulates, in the submicron range, in conjunction with a vertically... | 08/29/2000 |
| 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 |
| 6074458 | Method and apparatus for separation of unburned carbon from flyash Apparatus and method for separating carbon particles from flyash includes one of increasing a relative humidity of the flyash or decreasing the relative humidity of the flyash to within an optimum humidity range, and introducing the flyash within the opti... | 06/13/2000 |
| 5922103 | Automatic gas conditioning method An air pollution control system using a novel control system is disclosed. The control system is particularly useful with a gas conditioning tower ("GCT") which uses a spray from a two-fluid nozzle to cool hot process gases prior to flowing to an electros... | 07/13/1999 |
| 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 |
| 5753012 | Method for the cleaning of flue gases with different contents of acidic components A method of operating an apparatus for the cleaning of industrial waste gases and especially power plant flue gases. The gases are fed through a quencher to a first scrubber with its own recirculation and upstream of a second scrubber having its own recir... | 05/19/1998 |
| 5624476 | Method and device for purifying gaseous effluents A gas is purified using both mechanically atomized liquid and liquid dispersed by electrostatic atomization at asperities arranged at surfaces of emitting electrodes. The concentration of washing liquid between the make-up pipeline and discharge pipeline ... | 04/29/1997 |
| 5601791 | Electrostatic precipitator for collection of multiple pollutants A novel electrostatic precipitator includes an electrostatic collector section with discharge electrodes positioned between pairs of grounded collector electrodes, a gas entry port located upstream of said electrostatic collector section, and a transition... | 02/11/1997 |
| 5470556 | Method for reduction of sulfur trioxide in flue gases The invention is a method for reduction of sulfur trioxide in flue gases which includes (a) combusting air and petroleum coke in a combustion zone to produce a particulates, sulfur trioxide, and sulfur dioxide-containing combustion product gas; (b) passin... | 11/28/1995 |
