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| Number | Title | Issue Date |
| 8092582 | Wet-type exhaust gas desulfurizer An absorbing tower provided with plural spray headers (3) which each have a plurality of spray nozzles (5) and are arranged in a multi-stage state in the flow direction of exhaust gas, in which an absorption liquid containing a slurry of limestone or l... | 01/10/2012 |
| 7347889 | Ultrasonic solution separator An ultrasonic solution separator including an ultrasonic atomization chamber supplied with a solution containing a target material; an ultrasonic oscillator producing mist from the solution in the ultrasonic atomization chamber with ultrasonic oscillation; a power s... | 03/25/2008 |
| 7241470 | Method for monitoring the course of a process using a reactive gas containing one or several hydrocarbons The method applies to a process such as cementation or chemical vapor infiltration or deposition, the process being carried out in an oven and the method comprising setting operating parameters of the oven, introducing a reagent gas into the oven, the reagent gas co... | 07/10/2007 |
| 6899750 | Method and apparatus for cleaning a gas A system and method of cleaning a gas of undesired particulate, aromas, and gases is disclosed. The invention uses a centrifugal scrubbing space to liquid wet a gas and includes a container for containing a liquid with a pump to circulate the liquid. The gas is pump... | 05/31/2005 |
| 6827765 | Scrubber for reducing siliciferous byproducts A scrubber for removing particles from waste gas. The scrubber comprises a chamber and a water-injecting device. The chamber has an outlet, an inlet connected to a gas inlet pipe, and a plurality of sprayers connected to a water source to spray water into the chambe... | 12/07/2004 |
| 6821317 | Wet-process gas treatment method and 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... | 11/23/2004 |
| 6805734 | Compact cascade scrubber for scrubbing exhaust gas This invention relates to a cascade-type scrubber, with which the wet scrubbing of the exhaust gas and removal of droplets from the gas can be performed in one and the same scrubber, producing a pure, dropless gas. It is thus essential that the cascade tubing typica... | 10/19/2004 |
| 6743279 | Air purification device for air handling units An air handling unit having a unique air treatment device, and a method for retrofitting existing air handling units to include the air treatment device. The air handling unit includes a casing defining a space for conditioning air, and forming an inlet and an outle... | 06/01/2004 |
| 6638343 | Exhaust gas treating device A waste gas treatment system has a primary cooling section provided at a stage subsequent to a decomposition treatment section in which a waste gas is subjected to decomposition treatment at high temperature. The primary cooling section has a liquid spray... | 10/28/2003 |
| 6623546 | Method and installation for chemical purification of vapor in a dehydrator with mechanical vapor compression According to the invention, the vapor is taken from the condensation chamber of the dehydrator and, prior to being compressed and at a temperature substantially equal to 100° C., it is caused to pass in succession through a series of purifiers, and in ea... | 09/23/2003 |
| 6613127 | Quench apparatus and method for the reformation of organic materials Methods and apparatus for processing and cooling a hot gaseous stream exiting a gasification reactor vessel at temperatures in excess of 1300° C. where the gas will come into contact with a corrosive aqueous liquid, including methods and apparatus for co... | 09/02/2003 |
| 6613133 | Single spray level for flue gas desulfurization system with internal main feed headers A spray level arrangement for spraying a liquid absorbent into flue gas flowing through a flue gas desulfurization absorber tower having a shell, includes a pair of elongated headers each having an inlet end for receiving liquid absorbent outside the shel... | 09/02/2003 |
| 6511529 | Method of reducing the number of pollutants in a gas flow and device for carrying out said method The object of the invention is to provide a method of treating wash water resulting from the scrubbing of process gases in smelting plants, according to which method the wash water is brought into intimate contact with the process gas and is circulated wh... | 01/28/2003 |
| 6458188 | Method and means for air filtration A method of filtering an air or gas stream utilizes a liquid, such as water, to saturate the gas stream. A sufficient quantity of water is presented to the gas stream to saturate the gas stream and knock particulate matter out of the gas stream. The gas s... | 10/01/2002 |
| 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 |
| 6372023 | Method of separating and recovering carbon dioxide from combustion exhausted gas and apparatus therefor There is disclosed a method of separating and recovering carbon dioxide from combustion exhausted gas, which method includes: bringing the combustion exhausted gas in contact with water, under a pressure-increased condition, to form carbon dioxide hydrate... | 04/16/2002 |
| 6217640 | Exhaust gas treatment apparatus An exhaust gas treatment apparatus for treating exhaust gases generated in semiconductor manufacturing processes. It includes a main pipe, a U pipe, a discharge pipe and a tank. The main pipe has an inlet to receive exhaust gases, a heater surrounding the... | 04/17/2001 |
| 6176898 | Method and system for collecting and handling dust in a papermachine environment An improved process and system for collecting and handling dust in a papermaking machine environment wherein dust-laden air is drawn into and moves along an elongated collector by way of a vacuum-generating source connected to the collector involves the i... | 01/23/2001 |
| 6177597 | Glycol solvents and process A glycol solvent selected from a glycol and a tetramethylammonium carboxylate having improved dehydrating capacity and a reduced aborbency for aliphatic and aromatic hydrocarbons.... | 01/23/2001 |
| 6093250 | Wet scrubber and paint spray booth including the wet scrubber A wet scrubber including an acceleration cone for accelerating an airflow containing paint particles and having a curved inner wall on which water used for capturing paint particles flows downwardly, a mixing chamber for mixing the airflow and water and p... | 07/25/2000 |
| 6051055 | Exhaust gas desulfurization system An exhaust gas desulfurization system includes a spray pipe which is provided with a plurality of nozzles in the lengthwise direction and whose one end is closed and arranged horizontally in an absorption tower through which the exhaust gas passes vertica... | 04/18/2000 |
| 6024796 | Wet scrubber and paint spray booth including the wet scrubber A wet scrubber including an acceleration cone for accelerating an airflow containing paint particles and having a curved inner wall on which water used for capturing paint particles flows downwardly, a mixing chamber for mixing the airflow and water and p... | 02/15/2000 |
| 6017384 | Nozzle arrangement for a scrubbing column A nozzle arrangement in which the nozzles have a scrubber, especially for flow gas desulfurization, are laid in accordance with the following: (a) liquid concentrations of a component to be absorbed from a gas stream scrubbed in the column are measured ab... | 01/25/2000 |
| 6007604 | Nozzle assembly for a scrubbing column A nozzle arrangement for a scrubbing column for a flue gas in desulfurization, in which the scrubbing column has a sump, a baffle-free zone above the sump and a nozzle arrangement above the absorption zone. The nozzles, preferably by selective connection ... | 12/28/1999 |
| 6001154 | Gas-liquid contact apparatus The present invention provides a gas-liquid contact apparatus which can make the equipment more compact and reduce the cost while achieving high gas-liquid contact efficiency. In the apparatus of the present invention, an oxidation tank (2) is installed i... | 12/14/1999 |
| 5951743 | Method and apparatus for feeding exhaust gases to a wet scrubber The present invention discloses an exhaust gas conduit for feeding exhaust gases to a scrubber wherein the conduit is equipped with a self-cleaning device mounted inside the conduit body adjacent to an outlet end of the conduit for dispensing a cleaning s... | 09/14/1999 |
| 5904752 | Method for collecting airborne particles and microorganisms by their injection into a swirling air flow A method for collecting airborne particles and microorganisms by injecting them into a swirling air flow from where they are removed onto a dry surface, a surface coated with an adhesive material or a surface wetted by a liquid that is swirled onto that s... | 05/18/1999 |
| 5897690 | Vapor recovery system for hydrocarbon storage tanks A vapor recovery system for hydrocarbon storage tanks captures VOCs (volatile organic compounds) which would otherwise escape to the atmosphere, thereby reducing pollutant emissions to the environment. The system includes a wash chamber, where the VOC vap... | 04/27/1999 |
| 5853458 | Glycol solvents and method thereof A solvent composition comprising a glycol, a potassium carboxylate and a neopentyl alcohol having improved dehydrating capacity and reduced absorbency for aliphatic and aromatic hydrocarbons.... | 12/29/1998 |
| 5846299 | Recovering water soluble, volatile, organic compounds from bakery and other plant emissions Recovery of ethanol from the exhaust stacks of a bread-baking oven is achieved by passing the stack emissions through an adiabatic humidifier where the emissions are humidified to near saturation. The unevaporated water content of the humidifier is collec... | 12/08/1998 |
| 5843214 | Condensable vapor capture and recovery in industrial applications An apparatus for extracting condensable materials from exhaust gases which are produced by combustion. In a steam injected gas turbine driven powerplant, water is extracted from the exhaust gasses and returned to the cycle for steam raising and injection ... | 12/01/1998 |
| 5772709 | Apparatus for removing ammonia and carbon dioxide gases from a steam A geothermal steam condenser for reducing residual ammonia gas from a geothermal steam. The present condenser includes a column attached to the condenser for forming a curtain of temperature conditioned condensate, such that residual ammonia gas is passed... | 06/30/1998 |
| 5749944 | Process and apparatus for the removal of dimethyl ester vapors or particles emitted during the storage of dimethyl esters In a method for removing dimethyl ester vapors or particles emitted from a molten dimethyl ester storage tank, a gaseous mixture containing dimethyl ester vapors or particles and an inert gas are supplied to an inlet port of a water scrubber. Water is con... | 05/12/1998 |
| 5683476 | Flow line venturi scrubber A stream of gas contaminated with particulate material is wetted by a liquid spray in a scrubber manifold. Positioned downstream of the liquid spray in the manifold is a bed of wire filaments extending transversely across the manifold and cocurrent with t... | 11/04/1997 |
| 5560756 | Chimney smoke scrubber A chimney smoke scrubber for use with stoves and fireplaces includes a chimney cap enclosure secured atop the chimney or flue pipe of the combustion unit. The combustion gases from the enclosure are deliver through a duct to a smoke scrubber assembly. The... | 10/01/1996 |
| 5466300 | Method for removing and reclaiming excess uncured paint from paint spray booth Method for removing and reclaiming excess uncured paint from a paint spray booth includes entraining uncured over-sprayed paint particles in a stream of air passing through the paint spray booth. The entrained over-sprayed paint particles are then caused ... | 11/14/1995 |
| 5226935 | Air humidification apparatus A movable device for improving the indoor air-environment comprising a water pump, a substantially vertical sheet element (10, 11, 12) which is so arranged that a free falling curtain-like stream of water (17) is formed at the upper end of the sheet eleme... | 07/13/1993 |
| 5153034 | Paint spray booth with plenum means of reduced cross section and method of operating the same A paint spray booth apparatus and method, particularly for automated paint applications, is illustrated and disclosed. The booth has a spray painting chamber and a plenum thereabove. Unlike prior art booths, the plenum of the present invention provides ai... | 10/06/1992 |
| 5040482 | Paint spray booth A paint spray booth for painting articles is disclosed having a liquid wash scrubber beneath an upper chamber for removing the overspray paint particles from the air by intermixing the paint latent air with a liquid such as water. The scrubber forms a sub... | 08/20/1991 |
