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| Number | Title | Issue Date |
| 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 |
| 7105039 | Ozone remediation apparatus and methods A method and apparatus is provided of adding ozone and ozone and oxygen and ozone and another oxidizer such as chlorine dioxide or an acidifying agent to contaminated environments including high pressure work sites such as wells and sewage pipes and into high temper... | 09/12/2006 |
| 7097691 | Method for producing pigment nano-particles Method for producing pigment nano-particles may include vaporizing a pigment precursor material; drawing the vaporized pigment precursor material into a precipitation conduit; contacting the vapor in the precipitation conduit with a collection fluid at a first locat... | 08/29/2006 |
| 7041156 | Removing natural gas liquids from a gaseous natural gas stream Process for removing natural gas liquids from a gaseous natural gas stream at elevated pressure to obtain a gaseous product stream having a reduced content of natural gas liquids is provided. ... | 05/09/2006 |
| 7029589 | Universal method and apparatus for conversion of volatile compounds A method or process of treating a contaminated fluid (10) having at least one contaminant having a property selected from the group consisting of being volatile, hazardous, tacky and a combination thereof is provided. The method comprises contacting the conta... | 04/18/2006 |
| 6849105 | Method and installation for treating effluent gas containing hydrocarbons Prior to passing through pumping apparatus effluent gas containing hydrocarbons is subjected to washing by being sprayed with aromatic type oil in oil-recirculating washing apparatus. Polycyclic aromatic hydrocarbons contained in the effluent gas are trapped by bein... | 02/01/2005 |
| 6800115 | Method and a device for gas treatment A device for treatment of a gas stream includes one or more entities (3) having functional elements (10, 20, 110, 200, 230, 310, 320, 330, 400) that are attached to, and able to rotate with, a hollow axle (4). The device also includes one or mor... | 10/05/2004 |
| 6793712 | Heat integration system for natural gas liquefaction A pretreatment system for natural gas liquefaction employing heat integration for more efficient and effective natural gas temperature control. The pretreatment system expands the natural gas prior to acid gas removal. After acid gas removal, the natural gas is cool... | 09/21/2004 |
| 6746516 | Method and apparatus for treating air emissions and recovering products therefrom An air treatment system including an exhaust including an exhaust annulus defined by an inner exhaust wall, an outer exhaust wall circumscribing the inner wall, and a pressurized annulus between the inner and outer walls, and at least one condenser suspended within ... | 06/08/2004 |
| 6530978 | System for removing particulate and aerosol from a gas stream The present invention is a system 100 for removing particulate matter and aerosols from a gas stream generated by gasification prior to the gas stream being used as fuel in an internal combustion device or as synthesis gas for subsequent processing. The p... | 03/11/2003 |
| 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 |
| 6312505 | Particulate and aerosol remover The present invention is a method for removing particulate matter and aerosols from a gas stream generated by gasification prior to the gas stream being used as fuel in an internal combustion device or as synthesis gas for subsequent processing. The prese... | 11/06/2001 |
| 6291232 | Anaerobic digestion system and process Anaerobic digestion system and process in which the raw digester gas containing methane and other gaseous components is cooled at atmospheric pressure in the presence of a liquid to a temperature at which the other gaseous components have a substantially ... | 09/18/2001 |
| 6248156 | Particulate capture system and method of use A particulate capture system has an air circulating chamber that separates a first portion of particulates trapped within an air stream. The particulate capture system also has a water injection chamber that separates a second portion of particulates trap... | 06/19/2001 |
| 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 |
| 6156102 | Method and apparatus for recovering water from air A process of separating water from ambient air involves a liquid desiccant to first withdraw water from air and treatment of the liquid desiccant to produce water and regenerated desiccant. Water lean air is released to the atmosphere. Heat generated in t... | 12/05/2000 |
| 6027552 | Method for removing ammonia and carbon dioxide gases from a steam A method for reducing residual ammonia gas from a steam in a steam condenser. The method includes forming a condensate and a residual gas in a first stage, then forming a condensate curtain in the second stage and passing the residual gas through the cond... | 02/22/2000 |
| 6015451 | Vapor recovery system Apparatus for recovering volatile organic compounds (VOC) from VOC/inert gas mixtures leaving tanker holds during crude oil loading includes an absorption column 12 in which incoming VOC is absorbed into cold kerosene, a portion of the VOC rich kerosene l... | 01/18/2000 |
| 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 |
| 5840100 | Apparatus for purifying hot flue gas and for receiving thermal energy therefrom Particulate-containing hot flue gas flows are flowed into a boiler having a first and a second chamber. The first chamber has a gas side and a water side. The hot flue gas flows into the gas side of the first chamber which is in heat exchange relation wit... | 11/24/1998 |
| 5797981 | Process for de-acidifying a gas for production of concentrated acid gases A method of treating a gas, for example, natural gas containing at least one hydrocarbon and at least one acid gas to remove the acid gas from the natural gas and to produce at least one concentrated acid gas, wherein the gas is subjected to at least two ... | 08/25/1998 |
| 5785859 | Optimized process for conditioning steam-based vapor streams The invention relates to an optimized process for conditioning a stream of superheated steam laden with steam-volatile organic components by condensation of the steam phase with recovery of the heat of condensation and at least partial separation of the s... | 07/28/1998 |
| 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 |
| 5681360 | Landfill gas recovery A process for concentrating and recovering methane and carbon dioxide from landfill gas includes absorption of commonly occurring pollutants using a reduced amount of carbon dioxide absorbent which itself may be an in situ derived and recoverable constitu... | 10/28/1997 |
| 5660615 | Exhaust gas scrubbing process Exhaust gas is brought into contact with a washing liquid chiefly consisting of water in at least two washing stages. In the last washing stage, fresh water and/or a washing liquid containing fresh water is sprayed into the exhaust gas. In the penultimate... | 08/26/1997 |
| 5658361 | Apparatus for purifying hot flue gas and for recovering thermal energy therefrom Particulate-containing hot flue gas flows are flowed into a boiler having a first and a second chamber. The first chamber has a gas side and a water side. The hot flue gas flows into the gas side of the first chamber which is in heat exchange relation wit... | 08/19/1997 |
| 5512084 | Method of removing organic contaminants A method of removing organic contaminants from a process gas such as raw, untreated landfill gas is disclosed. The steps involve collecting the process gas that includes organic contaminants for removal. An absorption liquid such as a terpene, is injected... | 04/30/1996 |
| 5476986 | Method for cleaning a mixture of air and vapor from volatile crude oil with recovery of the hydrocarbons, and a system for use in the method A method for cleaning a mixture of air and vapour from volatile crude oil with recovery of the hydrocarbons, wherein the vapours are absorbed in an absorption means (3) by direct contact with a petroleum distillate, such as "petroleum" which has been cool... | 12/19/1995 |
| 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 |
| 5318758 | Apparatus and process for removing carbon dioxide from combustion exhaust gas An apparatus and a process for removing CO2 from a combustion exhaust gas, by effecting counterflow contact of aqueous alkanolamine solution with the combustion exhaust gas to absorb CO2 from the gas in the alkanolamine solution and ... | 06/07/1994 |
| 5220782 | Efficient low temperature solvent removal of acid gases A high pressure synthetic gas stream is produced by gasifying coal. Hydrogen sulfide is removed by contacting the high pressure gas stream with a physical solvent, such as an alcohol, in an absorber column. A low temperature is maintained in the absorber ... | 06/22/1993 |
| 5133949 | Process and device for the removal of H2 S Process for removing hydrogen sulfide at low concentration in a gas containing water vapor. The gas is cooled to a temperature below the dew point of water, which condenses and separates the water. The dry gas is scrubbed free of hydrogen sulfide by an H | 07/28/1992 |
| 5108469 | Exhaust-air purifying unit An exhaust-air purifying unit includes a housing, a first fan which is disposed in the housing and which draws exhaust air through the housing, and a heat exchanger which is disposed in the housing and which cools the exhaust air via heat transfer with a ... | 04/28/1992 |
| 5102433 | Process of purifying exhaust gases In order to suppress the formation of a plume by the exhaust gas which has been purified by wet scrubbing and has subsequently been reheated, it is proposed to effect an additional cooling of the exahust gas between the wet scrubber and the reheater so th... | 04/07/1992 |
| 5080696 | Process and device for reducing the content of gaseous acid pollutants in fumes discharged from an incineration plant The present invention relates to a process for reducing the content of gaseous acid pollutants soluble in water and contained in fumes discharged from an incineration plant, in the course of which the said fumes are cooled by means of indirect heat exchan... | 01/14/1992 |
| 4971607 | Cryogenic process for the removal of acidic gases from mixtures of gases by solvent A cryogenic process for the removal of acidic gases from natural or synthetic gases comprising preliminary cooling of the gas to condense a portion of the acidic gases contained in the gas, and contacting the cooled gas with a mixture of one or more organ... | 11/20/1990 |
| 4932334 | Method and apparatus for removing pollutants from incinerator fumes Garbage incinerator fumes containing water vapor and HCl are drawn downwardly over a cooled tube bundle (41) in a vertical heat exchanger (4), whereat the water vapor condenses and the HCl dissolves in the condensate, which then falls into a collection re... | 06/12/1990 |
| 4682990 | Method and apparatus for cleaning watery ventilating air containing liquids which have been gasified during cooling or lubrication of converting machines, particularly rolling mills A method of cleaning watery i.e. humid, ventilating air containing liquids which have been gasified during cooling or lubrication of converting machines, particularly rolling mills, comprises cooling of the ventilating air in one or several stages to a te... | 07/28/1987 |
| 4606742 | Novel heat recovery process In a method of recovering heat from flue gas resulting from the combustion of chlorinated organic compounds at 900° to 1300° C. at a pressure of 0.9 to 1.5 bar absolute whereby the flue gas is cooled with the recovery of heat and hydrogen chloride is pr... | 08/19/1986 |
| 4529417 | Process for the isothermal absorption of ethylene oxide using film absorbers This invention relates to a process for the isothermal absorption of the ethylene oxide contained in the gas from an ethylene oxide production plant. This process is characterized in that the gas is firstly cooled to a temperature of between 5° and 60° ... | 07/16/1985 |
