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| Number | Title | Issue Date |
| 8105419 | Gas liquid contactor and effluent cleaning system and method The invention relates to a gas liquid contactor and effluent cleaning system and method and more particularly to an array of nozzles configured to produce uniformly spaced flat liquid jets shaped to minimize disruption from a gas. An embodiment of the invention is d... | 01/31/2012 |
| 7399337 | Continuous air monitor filter changeout apparatus An apparatus and corresponding method for automatically changing out a filter cartridge in a continuous air monitor. The apparatus includes: a first container sized to hold filter cartridge replacements; a second container sized to hold used filter cartridges; a tra... | 07/15/2008 |
| 7374604 | System and method for flue gas treatment The present invention discloses a system for flue gas treatment, wherein the provided system comprises a quench module, a first control module, a filter collecting module, a wet scribing module and a regeneration module. In this system, parts of the particles contai... | 05/20/2008 |
| 7252703 | Direct contact liquid air contaminant control system The direct contact liquid air contaminant control system and method to revitalize air by removal of carbon dioxide and other trace gas contaminants use a direct contact air, liquid scrubber element and stripper element. The scrubber element has two rotor elements ro... | 08/07/2007 |
| 7198108 | Changing the temperature of offshore produced water Water that is produced during offshore hydrocarbon processing, such as hot produced water accompanying hydrocarbons taken from subsea reservoirs, or cold water resulting from heating LNG (liquified natural gas) to convert it to gas, is changed in temperature to be c... | 04/03/2007 |
| 7189282 | Method for eliminating mercaptan from crude gas This invention relates to a process for cleaning gas, in particular hydrocarbonaceous gas such as e.g. natural gas, which is contaminated with sulfur in the form of H2S and mercaptans as well as CO2. To remove the undesired sulfur-contai... | 03/13/2007 |
| 7163571 | Exhaust gas cooler and particulate scrubbing system An exhaust gas cooling and particulate scrubbing system for automobiles includes a first stage intercooler for initial, indirect cooling of the exhaust gas and a direct exhaust gas cooling and scrubbing device preferably positioned downstream in the exhaust system t... | 01/16/2007 |
| 7160362 | Method and device for cleaning air A method of cleaning air, including a humidifying operation for humidifying the air containing chemical contaminants by a humidifier and taking a part of the gaseous contaminants in the air into excessive moisture to remove the contaminants from the air, and a dehum... | 01/09/2007 |
| 7156896 | Separating tank assembly and method of draining separating tank A separating tank assembly enables a dental vacuum separating tank to be drained without using a pump and without turning off or isolating the vacuum source from the tank. A drain tank is provided in fluid communication with the separating tank, and a control valve ... | 01/02/2007 |
| 7156895 | Air cleaning system A system for cleaning air wherein the air to be cleaned is bubbled up through an aqueous phase and an organic phase. The air is bubbled upwardly through the liquid to take advantage of the weight of the liquid to compress the gas, thereby increasing the solubility o... | 01/02/2007 |
| 7077884 | Hydrogen sulfide scrubber using polymeric amine and associated methods A hydrogen sulfide scrubber includes first and second scrubber tanks with scrubber media contained therein. Scrubbing solution circulators each include a dispenser for dispensing scrubbing solution into contact with the scrubber media, a sump for collecting the scru... | 07/18/2006 |
| 7037361 | Dust collector with an inbuilt cyclonic water filter A dust collector with an inbuilt cyclonic water filter, comprising a cup-shaped dust collecting unit, a water filter, a fan, a dust passage, an air flow passage, incoming and outgoing air passages; wherein, the outlets of the water filter open into the inlet of the ... | 05/02/2006 |
| 7014684 | Method for the treatment of waste gas from a cellulose plant A process and a device for cleaning waste gas from pulp production, especially for cleaning waste gases from a bleaching reactor. Aerosols contained in the waste gas are removed and the gaseous impurities are scrubbed out of the waste gas by a scrubbing liquid. ... | 03/21/2006 |
| 6969500 | Method for separating titanium tetrachloride The invention relates to a method for separating titanium tetrachloride and the hydrolyzed reaction products of titanium tetrachloride from the exhaust gases generated during the chlorination of raw materials containing titanium by treating the exhaust gases with a ... | 11/29/2005 |
| 6946105 | Process and apparatus for the recovery of metal oxide particles A process for the recovery of metal oxides from a solution containing metallic salts by spray roasting of these solutions. The process is particularly suitable for spray roasting spent pickling acids. The process feeds the solution to a reactor for spray roasting of... | 09/20/2005 |
| 6926759 | Air filter An air filter baffle unit that works with large type canister wet/dry type vacuums. The baffle unit also can be used in large air filter systems and can be ganged to increase filtering. The baffle unit has two sections that are connected for use. An inlet pipe is co... | 08/09/2005 |
| 6759018 | Method for point-of-use treatment of effluent gas streams A system for abating undesired component(s) from a gas stream containing same, such as halocompounds, acid gases, silanes, ammonia, etc., by scrubbing of the effluent gas stream with an aqueous scrubbing medium. Halocompounds, such as fluorine, fluorides, perfluoroc... | 07/06/2004 |
| 6235961 | Process for pretreating cracked gas before caustic tower treatment in ehtylene plants An inline, high-shear mixer is provided in a cracked gas stream upstream of a caustic tower in an ethylene production unit. Spent caustic is withdrawn from the bottom of the caustic tower and pumped to the mixer, where the spent caustic mixes with and abs... | 05/22/2001 |
| 6221133 | Fluid separation packing The invention provides a cellular packing including a vapor/liquid separation device that can be stacked vertically with minimum wasted space. The packing uses static vanes in each cell to direct the liquid component of a vapor/liquid mixture to exit slot... | 04/24/2001 |
| 6214242 | Direct injection air stripping method and apparatus A method and apparatus for stripping a volatile compound from waste water comprises creating a high velocity spray of air and stream of water at a first inlet to a first expansion chamber to volatize the compound, recombining the water and air flow throug... | 04/10/2001 |
| 6190629 | Organic acid scrubber and methods A scrubber assembly for removal of water soluble and/or alkaline gases from an exhaust stream uses a scrubber mixture contained within at least one scrubber vessel. Preferably the scrubber mixture include a liquid phase including an aqueous acid solution,... | 02/20/2001 |
| 6179901 | Apparatus and method for producing HF from phosphate rock Hydrogen fluoride production apparatus removes phosphate rock dust from a hot gas mixture exhausted from a phosphate rock defluorination kiln; cools the hot gas mixture in a heat exchanger to a low enough temperature that it can be brought into contact wi... | 01/30/2001 |
| 6132497 | Dust suppression system A dust suppression system for suppressing dust associated with a movement of dust producing material along an open conduit may include a hood assembly positioned adjacent the open conduit so that the hood assembly defines an interior chamber that is expos... | 10/17/2000 |
| 6063163 | Co-current and counter-current gas dehydration system According to the present invention, an inexpensive co-current and counter-current gas dehydration system, contactor apparatus, and operating method is provided which does not result in a need to clean equipment on a frequent basis. More specifically, ther... | 05/16/2000 |
| 5928412 | Method and apparatus for cleaning a vapour A method is disclosed by which vapour is cleaned of gaseous impurities during evaporation of polluted liquids. Vapour is conducted via a boiler, a compressor to a heat exchanger (12) in which condensation takes place. In order to clean the vapour, a scrub... | 07/27/1999 |
| 5837037 | Gas handling for plastics liquefaction The present invention relates to a method for removing high molecular weight high melting point hydrocarbon vapors from a hydrocarbon vapor offgas stream produced during the liquefaction of a solid waste plastic material to produce an oil that serves as a... | 11/17/1998 |
| 5803955 | 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 ... | 09/08/1998 |
| 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 |
| 5449398 | Methods for dechlorynation disposal of polyvinyl chloride wastes and apparatus thereof The present invention provides methods for making gases generated in the treatment of hydrogen chloride wastes harmless by neutralization and dissolving, and an apparatus thereof, and a suction-type solution filter container to be used, and providing to s... | 09/12/1995 |
| 5397381 | Method of cooling and optionally cleaning a hot gas, especially of a gas generated upon combustion or gasification of carbon-containing fuels In a method of cooling and scrubbing a hot gas a hot gas is supplied with a removal pipe into a scrubber. The hot gas is introduced into at least one liquid bath of the scrubber. The hot gas is forcibly dispersed to form small bubbles over at least a port... | 03/14/1995 |
| 5330563 | Process for separating a volatile organic compound from a gas A process is disclosed for recovering a volatile organic compound at a recovery of 90 to 96% by volume from a gas generated from gasoline, kerosine, benzene, and alcohol discharged from storage tanks, tank trucks, and tank lorries. In the process comprisi... | 07/19/1994 |
| 5078759 | Apparatus and method for precipitating particles from a gaseous stream An apparatus for precipitating particles, debris and the like from a gaseous stream, comprises an enclosed vessel partly filled with a liquid to a level and having a bottom wall; a passageway operably associated with the vessel for admitting the gaseous s... | 01/07/1992 |
| 4880445 | Multiple stage gas absorber Apparatus for and method of absorbing a gas into a liquid in a multiple stage absorption process wherein the gaseous products from each stage is reintroduced into fresh liquid in subsequent stages.... | 11/14/1989 |
| 4775395 | Integrated process for the treatment of a methane-containing wet gas in order to remove water therefrom A gas containing methane and water is treated in order to remove water therefrom. The process comprises a step of contacting the gas with a liquid phase formed of water and solvent, whereby water free of solvent can be removed, and a subsequent step of co... | 10/04/1988 |
| 4710211 | Cryogenic process for the selective removal of acidic gases from mixtures of gases by solvents A cryogenic process is disclosed for the selective removal of acidic gases from natural gases or from synthesis gases by adsorption in two towers and cooling of the gas outcoming from the first tower to the purpose of condensing a portion of CO2 | 12/01/1987 |
| 4705542 | Production of synthesis gas Deposition of ash in the outlet conduit of a synthesis gas quench chamber is reduced or eliminated by providing a streamlined configuration at the mouth and throat of the outlet conduit.... | 11/10/1987 |
| 4614645 | Method for treating effluent in exhaust gas treating apparatus A method for treating an effluent in an exhaust gas treating apparatus, which method comprises the steps of introducing the exhaust gas into a dry dust collector where a dust contained in the exhaust gas is removed; guiding the exhaust gas to a wet exhaus... | 09/30/1986 |
| 4612174 | Method of removing noxious substances from gases Waste gases and other noxious substances which are formed in connection with chemical processes and the manufacture of devices such as semiconductors and covalent hydrides and element organic compounds, etc. are treated so as to remove the noxious compone... | 09/16/1986 |
| 4533530 | Process for the separation of volatile chlorine compounds from the exhaust gases resulting from the chlorination of titanium-containing raw materials A process for the separation of volatile chlorine compounds from exhaust gases resulting from the chlorination of titanium-containing raw material by the treatment of the exhaust gases with an aqueous media in several stages and the absorption of the vola... | 08/06/1985 |
| 4479812 | Sorption fractionation system for olefin separation A continuous fractionation technique is provided for recovering ethylene from an olefinic feedstock comprising C3+ higher olefins. This technique provides methods and means for contacting the olefinic feedstock in a counter current ... | 10/30/1984 |
