Did You Know...
...that after Parker Brothers executives turned down the game of Monopoly because it had "52 fundamental errors" (including taking too long to play), a copy of the game wound up in the home of the company president who stayed up until 1 a.m. to finish playing it? He was so impressed by the game that the next day he wrote to inventor Charles Darrow and offered to buy it!
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| Number | Title | Issue Date |
| 7416716 | Purification of carbon dioxide SO2 and/or NOx are removed from gaseous CO2 at elevated pressure(s) in the presence of molecular oxygen and water and, when SO2 is to be removed, NOx, to convert SO2 to sulfuric acid and/or NOx | 08/26/2008 |
| 7288235 | Method and installation for purifying gas The invention relates to a method and an installation for separating sulphur dioxide from exhaust gas, wherein sea water is added to the exhaust gas in an absorption column and the sea water charged with sulphur compounds is extracted from the liquid sump of the abs... | 10/30/2007 |
| 7255842 | Multi-component removal in flue gas by aqua ammonia A new method for the removal of environmental compounds from gaseous streams, in particular, flue gas streams. The new method involves first oxidizing some or all of the acid anhydrides contained in the gas stream such as sulfur dioxide (SO2) and nitric o... | 08/14/2007 |
| 7189381 | Method of scrubbing lower mass sulfides with a sulfide scrubbing medium capable of regeneration A method of scrubbing lower mass sulfides with a sulfide scrubbing medium capable of regeneration. The sequential order of gas flow through three vessels is altered. A first of the three vessels is maintained in a scrubbing mode, scrubbing to breakthrough sulphur fr... | 03/13/2007 |
| 7153481 | Method and device for separating sulphur dioxide from a gas A device (1) for separating sulphur dioxide from a gas (4) by means of an absorption liquid has an inlet (2) for gas (4) containing sulphur dioxide, an outlet (18) for gas (16), from which sulphur dioxide has been separated,... | 12/26/2006 |
| 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 |
| 7008516 | Method and apparatus for desalinating and concentrating sea water, desalinated deep water and concentrated deep water According to a method of desalinating sea water, sea water sampled from deep sea is injected into a decompression chamber of a reduced pressure tank having a steam chamber, steam at an atmospheric pressure superheated to a boiling temperature or higher by high-frequ... | 03/07/2006 |
| 6946108 | Flue gas desulfurization apparatus and flue gas desulfurization system, and method for operating flue gas desulfurization apparatus A flue gas desulfurization apparatus includes at least one activated carbon fiber board 20 provided in a catalyst unit 6, the board being formed by alternatingly juxtaposing one or more plate-like activated carbon fiber sheets and one or more corrugate... | 09/20/2005 |
| 6939523 | Method of removing SO3 from flue gases A calcium hydroxide slurry is injected into the off gases in the exhaust duct of an industrial plant which burns sulfur containing fuels. The calcium hydroxide slurry reacts with SO3 produced as a result of the combustion process and forms a primary solid... | 09/06/2005 |
| 6896858 | Gas refining system A gas refining method for adsorbing a reducing gas obtained by pressure gasification of coal or oil comprises introducing a reducing gas stream into an adsorbing and removing zone where it contacts an adsorbent. Sulfur-containing compounds are adsorbed onto the adso... | 05/24/2005 |
| 6881243 | Method for removing acidic gases from waste gas A method for removing acidic gases from waste gases is disclosed. The invention relates to a method for removing acid gases, in particular from SO2 and NOx, by contacting the waste gas with an emulsion of water in organic sulfoxides, in particu... | 04/19/2005 |
| 6684629 | Method for checking the conversion capacity of a catalytic element for converting ozone Method for checking the conversion capacity of a catalytic element for converting ozone where the catalytic element is provided as a vehicle radiator with a catalytic coating and the method of checking uses ozone sensors upstream and downstream of the rad... | 02/03/2004 |
| 6531104 | Process for the absorption of sulfur oxides and the production of ammonium sulfate A flue gas mixture containing sulfur oxides is scrubbed in a countercurrent spray tower absorber with a spray of ammonium sulfate liquor and the scrubbed gas stream containing ammonia aerosols, sulfur trioxide aerosols and ammonia slip is passed to a wet ... | 03/11/2003 |
| 6503471 | Process for malodorous gas treatment Malodorous gases such as amines, organosulfur compounds, hydrogen sulfide, styrene and aldehydes are economically and efficiently treated at ambient temperature and pressure by a catalytic absorption and oxidation process comprising: (a) bringing the malo... | 01/07/2003 |
| 6348129 | Treatment of pulp mill condensate with ozone An aqueous stream such as pulp mill condensate containing one or more sulfur compounds is treated by (a) reacting an aqueous feed stream containing TRS contaminant selected from the group consisting of hydrogen sulfide, methyl mercaptan, dimethyl sulfide,... | 02/19/2002 |
| 6277343 | Flue gas scrubbing method and apparatus therefor An apparatus and process for removing acidic gases, such as sulfur dioxide, hydrogen chloride and hydrogen fluoride, from flue gases produced by processing operations of the type carried out in utility and industrial plants. The apparatus is generally a g... | 08/21/2001 |
| 6214303 | Method and apparatus for treating the atmosphere Method and apparatus for treating the atmosphere to lower the concentration of pollutants therein in which ambient air is passed into operative contact with a stationary substrate having at least one ambient air contacting surface having a pollutant treat... | 04/10/2001 |
| 6200542 | Method and apparatus for treating the atmosphere Method and apparatus for treating the atmosphere to lower the concentration of pollutants therein in which ambient air is passed into operative contact with a stationary substrate such as an automobile at rest, a billboard, an air conditioning unit, a tra... | 03/13/2001 |
| 6138378 | Wet gas processing method and the apparatus using the same This invention is related to a wet gas process which would not require a spray pump, and which would allow the absorption liquid to be recovered smoothly even if the flow velocity of the gases entrained to the liquid should decrease. A wet gas processing ... | 10/31/2000 |
| 6017501 | Disposal of hydrogen sulfide gas by conversion to sulfate ions in an aqueous solution A process is provided for disposing of hydrogen sulfide contained in a gas stream, wherein a first gas feed stream having a hydrogen sulfide gas component, a second gas feed stream having an oxygen gas component, and an aqueous liquid feed stream are comb... | 01/25/2000 |
| 5980846 | Gas refining system This invention relates to a gas refining system wherein a high-temperature and high-pressure reducing gas is introduced into a fixed-bed desulfurizer packed with an adsorbent by which sulfur compounds contained in the high-temperature and high-pressure re... | 11/09/1999 |
| 5788949 | Liquid phase conversion of a source of sulfur dioxide to sulfuric acid A process for producing in liquid phase, concentrated sulfuric acid in the liquid phase from a source of sulfur dioxide, is described. The process comprises, converting the source of sulfur dioxide to sulfuric acid. The liquid phase, comprises: a) nitric ... | 08/04/1998 |
| 5693301 | Method for removing sulphur dioxide from a gas A method for removing sulphur dioxide from a gas, such as a flue gas, is disclosed. In the method, the sulphur-dioxide-containing gas is conducted upwards through at least one layer of aqueous absorbent suspension, whose absorbent is lime or limestone, th... | 12/02/1997 |
| 5645807 | Magnesium-enhanced sulfur dioxide scrubbing with gypsum formation A wet scrubbing method for removal of sulfur dioxide from a gaseous stream uses a magnesium-enhanced lime scrubbing aqueous slurry, where a solids content in the aqueous slurry in a wet scrubbing unit is maintained at an amount of between 13 to 20 percent... | 07/08/1997 |
| 5620667 | Wet process flue gas desulfurization apparatus The invention discloses a wet process flue gas desulfurization apparatus and method for use with a tank oxidation system. The apparatus comprises: an absorption tower having a slurry containing a calcium compound which is supplied to the bottom tank, a ci... | 04/15/1997 |
| 5520897 | Method of reagent and oxidation air delivery A method of forced oxidation flue gas desulfurization uses an oxidation air system air stream to not only provide oxidation air into an absorber vessel, but also to pneumatically convey and inject dry reagent into the absorber vessel to satisfy reagent ad... | 05/28/1996 |
| 5500196 | Method of reagent and oxidation air delivery A method of forced oxidation flue gas desulfurization uses an oxidation air system air stream to not only provide oxidation air into an absorber vessel, but also to pneumatically convey and inject dry reagent into the absorber vessel to satisfy reagent ad... | 03/19/1996 |
| 5429808 | Wet-type exhaust gas desulfurizing apparatus An apparatus for wet process exhaust gas desulfurization including a spraying portion for spreading absorbent slurry including calcium compound, an absorbing tower for bringing the absorbent slurry sprayed from the spraying portion into contact with exhau... | 07/04/1995 |
| 5397549 | Apparatus to remove acid gases from a flue gas A method and apparatus to remove acid gases from a flue gas containing sulphur dioxide and oxides of nitrogen. There is a heat exchanger to reduce incoming flue gas temperatures. Gas from the heat exchanger are oxidized to their higher oxidation state. A ... | 03/14/1995 |
| 5362458 | Process for the simultaneous absorption of sulfur oxides and production of ammonium sulfate Process for the removal of sulfur oxides from sulfur oxide-containing gas with simultaneous production of ammonium sulfate. The process is carried out by first passing hot sulfur oxide-containing gas through a prescrubber wherein the gas contacts saturate... | 11/08/1994 |
| 5340484 | Air scrubbing system for waste water treatment The present invention is a gas scrubbing system for removing hydrogen sulfide gas from a wastewater system. Pumps draw wastewater from a wastewater source within the system for injection through aerators which aerats aspirate hydrogen sulfide gas and oxyg... | 08/23/1994 |
| 5332563 | Yellow phosphorus process to convert toxic chemicals to non-toxic products The present invention relates to a process for generating reactive species for destroying toxic chemicals. This process first contacts air or oxygen with aqueous emulsions of molten yellow phosphorus. This contact results in rapid production of abundant r... | 07/26/1994 |
| 5246471 | Method and apparatus for gas liquid contact A gas-liquid contact system for absorption of gaseous contaminants in an absorptive liquid where contact is attained by a controlled flow relationship between the gas and the liquid forming a fluidized liquid mass for intimate contact between the two.... | 09/21/1993 |
| 5209905 | Wet-type exhaust gas desulfurization system having a means for supplying air A wet-type exhaust gas desulfurization system comprises a reservoir for trapping an absorbing solution which has absorbed SO2 from exhaust gas; an absorbing solution circulating tank disposed directly under the reservoir; a plurality of bottom ... | 05/11/1993 |
| 5145822 | Metal foil supported catalyst A supported catalyst having a support body which is formed by one or more metal foils and which is well suited for catalytically decomposing ozone and for catalytically oxidizing carbon monoxide. Preferred embodiments further include a heat exchanger whic... | 09/08/1992 |
| 5132102 | Method for heat treatment of fines with atmosphere control A method to operate a flash calcination unit with both atmosphere and temperature control is described for mineral processing requirements and other atmosphere controlled processes. The method can be used to process phosphate, gold ore or activated carbon... | 07/21/1992 |
| 5130097 | Apparatus for hot-gas desulfurization of fuel gases An apparatus for removing sulfur values from a hot fuel gas stream in a fdized bed contactor containing particulate sorbent material by employing a riser tube regeneration arrangement. Sulfur-laden sorbent is continuously removed from the fluidized bed t... | 07/14/1992 |
| 4857285 | Method and system for removal of sulfur compounds from gases and for regenerating spent sorbents A method and system for removing hydrogen sulfide from a hot gas. In a moving bed absorber, sulfur compounds in the hot gas moving in a direction which is countercurrent to the direction of movement of the movable bed of metal oxide, react with metal oxid... | 08/15/1989 |
| 4853195 | Flue gas scrubber system A scrubber module (16) of the wet type includes a partition (26) extending across the upper end of a tank (20) between the dirty flue gas inlet (28) and the clean flue gas outlet (30). The partition (26) takes the form of a plurality of hollow fingers (32... | 08/01/1989 |
| 4844874 | Method and means for controlling mist scrubber operation A control system is provided for a mist scrubbing process in which a gas containing odorous and acidic contaminants is cocurrently contacted in a reaction chamber with tiny droplets of an aqueous reagent to react with and destroy the contaminants. The rea... | 07/04/1989 |
