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| Number | Title | Issue Date |
| 8088202 | Heat exchange tower airflow apparatus and method A heat exchange tower has an external structure including opposed sidewalls, a front barrier wall, an inlet opening below the front wall, and a rear barrier wall having an outlet at a generally upper region. A fill material generally spans the inside within the four... | 01/03/2012 |
| 7332007 | Dusting device with multiple stream nozzles A dedusting device 1 with a demister 15 advantageously arranged standing obliquely has a very compact construction because sufficient moistening or wetting of dust-containing crude air 24 is possible through the use of intensively acting multipl... | 02/19/2008 |
| 7329308 | Air handling and chemical filtration system and method The present invention relates to systems and methods for controlling humidity and temperature in gases or air streams used in semiconductor processing systems. These systems and methods can be used in combination with systems and methods for contaminant detection an... | 02/12/2008 |
| 7326286 | Exhaust gas treating tower Provided is an exhaust gas treating tower in which exhaust gas flow velocity is increased more than a prior art case so that exhaust gas treating efficiency can be enhanced or the exhaust gas treating tower can be made compact if equivalent performance is to be main... | 02/05/2008 |
| 7291196 | Filamentary pad for improved mist elimination and mass transfer An apparatus and method of making a filamentary pad for improved mist elimination and mass transfer comprising a plurality of layers of mesh, each layer of mesh having a plurality of mesh openings defined therein. A plurality of preferential gas flow openings, each ... | 11/06/2007 |
| 7135058 | Polluted air treatment method and system A system for removing at least one pollutant from an air stream exhaust, the system including a plurality of enclosures through which the air stream exhaust is directed to cool the air stream exhaust, a plurality of barriers within each respective enclosure to imped... | 11/14/2006 |
| 7112240 | Sterilizing air filter A sterilizing air filter has a casing, a base, multiple spray devices, a cover, multiple fans and multiple bent tubes. The casing has an inlet and an outlet. The base is mounted in the casing and has multiple chambers in the base. Disinfectant can be poured into the... | 09/26/2006 |
| 7025809 | Dual-type air purification system An air purification system for treating pollutants in a gas stream. The air purification system includes a housing with a plurality of nozzles, an acidic water supply device and an alkaline water supply device. The housing introduces the gas stream. The acidic water... | 04/11/2006 |
| 6966942 | Process for purifying exhaust gases by employing a bubble generator A process for purifying exhaust gases using a bubble generation device is disclosed. ... | 11/22/2005 |
| 6923852 | Flue gas desulfurization system with a stepped tray A stepped, perforated tray is provided for increasing the available gas-slurry contact area in a flue gas desulfurization chamber. The tray redirects the horizontal flow upwardly through the tray for increased surface area and contact time with slurry for removing S... | 08/02/2005 |
| 6863716 | Trap-type air purification system An air purification system which is well-suited to removing particles from outside air as the air flows into a cleanroom used in the fabrication of semiconductor integrated circuits. A housing provides at least one spray nozzle for spraying fine mist water droplets.... | 03/08/2005 |
| 6695018 | Collection scoop for flue gas desulfurization systems with bleed streams or ex situ forced oxidation A scoop is used to collect a liquid slurry upstream of an internal collection tank. The scoop is in fluid communication with a downcomer, which receives at least part of the collected slurry, thereby maintaining a continuous flow of liquid slurry through ... | 02/24/2004 |
| 6645273 | Method for removing impurity contents in the air A method for removing impurity substances in air flowing in a flow passage includes filtering the air in a first filter for removing solid substances; cooling the air in a first cooler to not higher than its dew-point temperature; capturing gaseous substa... | 11/11/2003 |
| 6623547 | Method for removing sulfuric acid mist and apparatus for removing the same The present invention provides a method for removing sulfuric acid mist wherein a gas containing sulfuric acid mist is bubbled into an absorbing solution through a gas diffuser having pores with an average pore diameter of about 1,000 μm or less. This me... | 09/23/2003 |
| 6550751 | Gas-liquid contactor with liquid redistribution device A gas-liquid contactor for removing gases and particulate matter from flue gases produced by processing operations of the type carried out in utility and industrial plants. The contactor is generally an open spray absorber having a spray tower (110) whose... | 04/22/2003 |
| 6497757 | Apparatus for removing impurity contents in the air An apparatus for removing impurity substances in the air includes a first filter for removing solid substances in the air flowing in a flow passage defined by a housing; a first cooler for cooling the air to not higher than its dew-point temperature; a we... | 12/24/2002 |
| 6478461 | Transportable hot-mix asphalt manufacturing and pollution control system A hot-mix asphalt manufacturing system including treatment of emissions and recirculated gases includes a counter-flow rotary dryer 12 having a combustion chamber 28, an inlet 24 for dry ingredients, an outlet 26 for hot-mix asphalt, and a plate collector... | 11/12/2002 |
| 6478859 | Airborne particulate removal apparatus In summary a device for removing airborne particulate of the present invention includes at least one chamber having an airstream inlet at an upstream end and an airstream outlet at a downstream end, an air mover cooperating with the at least one chamber s... | 11/12/2002 |
| 6451096 | Air cleaner for removing air pollutants by water spray type of dust collecting system An air cleaner for removing air pollutants by a water spray type of dust collecting system, which includes a dust collecting part and an air and water separating part in the interior of an air duct, the dust collecting part composed of primary and seconda... | 09/17/2002 |
| 6387165 | Airborne molecular contaminant removing apparatus A pair of jet nozzles are constructed for vapor-liquid contact removal in a gaseous molecule impurity removal apparatus, with one of the nozzles producing a counter flow to an upstream direction and the other nozzle producing a flow parallel to a downstre... | 05/14/2002 |
| 6068686 | Scrubber system and method of removing pollutants from a fluid A scrubber for removing pollutants from a fluid and having an inlet for receiving the fluid and an outlet for emitting the fluid, the scrubber comprising a first scrubber coupled with the fluid intermediate the inlet and the outlet for removing a first me... | 05/30/2000 |
| 6059866 | Air washer Washer media are disposed in an air inlet and an air outlet of a water spray chamber. A basic unit is formed by first stage nozzles from which spraying water that reaches the inlet washer media is sprayed in the reverse direction to an air flow; a water s... | 05/09/2000 |
| 6036756 | Retrofit of a center inlet type scrubber with absorption/gas distribution tray to improve gas-liquid contact in the absorption zone An improvement in a center inlet type scrubber that retrofit the scrubber with a perforated tray made up of rectangular or partially rectangular sections supported on beam supports in the annulus of the scrubber. The supports can be modified to form turni... | 03/14/2000 |
| 6007055 | Gas and liquid contact apparatus A gas and liquid contact apparatus is disclosed having a vertically orientated containing vessel including a sidewall. At least one grid assembly is positioned within the containing vessel transverse to and concentric about a vertical center line of the v... | 12/28/1999 |
| 5879434 | Multi-washer and method of total cleaning of gases The invention relates to a multi-washer, and to a method of cleaning synthesis gases obtained by the gasification of wastes of the most varied composition. Such multi-washers are used to remove lumpy and adhesive materials from the synthesis gas, such as ... | 03/09/1999 |
| 5866046 | Method for manufacturing ultra-fine water droplets and device for manufacturing the same This invention relates to a method for manufacturing ultra-fine water droplets containing a large amount of anions and in the present invention, there is provided a permeating cylindrical striking plate for manufacturing ultra-fine water droplets at an in... | 02/02/1999 |
| 5851271 | Device for filtering and humidifying an air flow A device for simultaneously filtering and humidifying an air flow uses an outer casing having a rotatable, reticulated filtering element. The air flow enters the casing and must pass through the filtering element by making abrupt change in directions. Par... | 12/22/1998 |
| 5762662 | System for binding resin and tar substances in wet-cleaning and wet precipitation systems A method and apparatus are provided for binding emulsified resin and tar substances in circulating water of a wet-cleaning and wet precipitation system for waste gas produced in the wood industry. Wood dust is metered into the circulating water and receiv... | 06/09/1998 |
| 5713970 | Multi-chambered scrubbing apparatus for dust control An apparatus for controlling dust generated during a material transfer operation includes an environmental enclosure surrounding a conveyor bed, the enclosure having a series of baffles creating scrubbing chambers in which dust particles are agglomerated ... | 02/03/1998 |
| 5509946 | Indoor air filter An indoor air filter is provided. The indoor air filter has a housing including a water tank, an air pump, an air inlet, an air outlet, an air pump positioned between the air inlet and outlet, and an air circulation section between the air inlet and the a... | 04/23/1996 |
| 5389120 | Heating, ventilation and air conditioning unit with automatically controlled water spray air purification system An automatically controlled water spray air purification system is incorporated in a heating, ventilating and air conditioning unit serving a conditioned interior building space. The purification system is operative to receive a portion of the return air ... | 02/14/1995 |
| 5358540 | Exhaust cleaner for filter hoods An exhaust cleaner includes a water trough installed in the exhaust piping of a filter hood through which exhaust gas from the filter hood passes, a water heater controlled to heat water in the water trough, a chemical detergent added in water in the wate... | 10/25/1994 |
| 5300131 | Compact scrubber A small modular portable flooded bed scrubber suitable for installation in confined areas is disclosed. The scrubber may be formed in a plurality of modular units, such as two or three units, and requires of minimum of accessory devices. The scrubber effl... | 04/05/1994 |
| 5122169 | Chemical recovery scrubbing system A scrubbing system for the removal of pollutant gas and liquid droplets from a gas stream prior to venting, comprises a scrubbing apparatus in which a recycled scrubbing fluid including the liquid is sprayed through the gas stream for absorption on coales... | 06/16/1992 |
| 5028241 | Down-draft fixed bed gasifier system A gasifier system for obtaining relatively clean combustible gaseous products from solid fuel materials, such as processed sewage sludge, comprises a gasifier reactor which communicates a raw, combustible gas to a cyclone separator, a gas scrubbing device... | 07/02/1991 |
| 5011520 | Hydrodynamic fume scrubber A self-cleaning, hydrodynamic fume scrubber for scrubbing a gaseous phase effluent with a scrubbing liquid, includes an inlet stage for receiving the particulate laden gaseous effluent. A negative pressure stage creates suction by spraying a first pressur... | 04/30/1991 |
| 4943306 | Exhaust gas purifying system This invention relates to an exhaust gas purifying system for diminishing air pollution essentially comprising to purifying devices side by side in sequential combination. The purifying device comprises a casing formed with a water or liquid chemical tank... | 07/24/1990 |
| 4437867 | Removal of undesired components from gases A gas scrubber and/or mist eliminator for high-velocity gas in the range between about 1,000 to 2,500 feet per minute. The gas flows horizontally through a duct or conduit in which a plurality of generally vertical, high-voidage, fibrous, non-capillary, f... | 03/20/1984 |
| 4433985 | Air scrubbing and purifying system An air scrubbing and purifying system is provided for effecting removal of combustion products from contaminated air generated by a fire in progress in an enclosed room. The system comprises (a) electrically-powered intake fans for withdrawing contaminate... | 02/28/1984 |
| 4397662 | Apparatus for removing solvents from air Apparatus for removing solvents from air, for example, from the air discharged from a paint spraybooth, includes an air duct through which solvent laden air is arranged to flow. A plurality of coalescer pads each having an extended surface area extend acr... | 08/09/1983 |
