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| Number | Title | Issue Date |
| 8172931 | Wet-type exhaust desulfurizing apparatus An absorbing tower is provided in its side wall with a gas entrance for introducing a combustion exhaust gas into the absorbing tower, and an absorbing liquid is sprayed from the nozzles of a spray header into the exhaust gas introduced to rise from the gas entrance... | 05/08/2012 |
| 8167975 | Exhaust gas purifying method and apparatus A system is provided that prevents inhibition of adsorption of Hg and other heavy metals by activated carbon or other heavy metal adsorbent due to prior adsorption of sulfur trioxide (SO3) in an exhaust gas containing SO3. As it has been found ... | 05/01/2012 |
| 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 |
| 7976622 | Wet flue gas desulfurization apparatus Absorption liquid recirculating pipes fitted with absorption tower (absorber) recirculating pumps corresponding to individual spray headers are inserted from the void tower portion inside absorption tower, near the liquid surface of liquid trapping portion (recircul... | 07/12/2011 |
| 7966727 | Installation construction method for boiler facilities An installation construction method is provided for boiler facilities in which the boiler facilities include a boiler building configured of a steel structure, a boiler main unit to be installed within the boiler building, various types of equipment to be installed ... | 06/28/2011 |
| 7922480 | Combustion apparatus and wind box The invention provides a combustion apparatus which can inhibit an NOx generation even in the case of promoting a mixing between a high-temperature combustion gas and an air so as to intend to reduce an unburned combustible. In a combustion apparatus provided with a... | 04/12/2011 |
| 7842644 | Catalyst for oxidation of metal mercury A catalyst is provided having higher mercury oxidation performance than a conventional catalyst without increasing catalyst quantity or enhancing SO2 oxidation performance and constitutes an oxidation catalyst for metal mercury, which contains a molybdenu... | 11/30/2010 |
| 7833501 | Method and apparatus for treating discharge gas A method and apparatus for treating an exhaust gas comprising heavy metals, wherein the apparatus comprises a heat recovery unit, recovering exhaust gas heat at an exit of the air preheater; a precipitator, collecting soot/dust contained in an exhaust gas at an exit... | 11/16/2010 |
| 7824635 | Filter for exhaust gas from diesel engine and equipment A particulate material removing filter for exhaust gas from a diesel engine is provided. The particulate material removing filter is formed by laminating metal laths having an oxidation catalyst layer containing a noble metal that oxidizes nitrogen oxide in exhaust ... | 11/02/2010 |
| 7731926 | Wet flue-gas desulfurization apparatus and method of wet flue-gas desulfurization Flue gas of boiler is introduced through gas inlet part of flue-gas desulfurization apparatus, and absorbent liquid sprayed from spray nozzle is trapped in recirculation tank. There, agitation is performed by oxidation agitator to thereby oxidize SO2 abso... | 06/08/2010 |
| 7722844 | Exhaust smoke denitrating apparatus and method of exhaust smoke denitration An exhaust smoke denitrating apparatus in which using an NH3 injection unit, compressed air is fed from blower to ejector for extracting of exhaust gas from HRSG1, and with thus obtained mixed gas, NH3-containing gas is produced from NH3 | 05/25/2010 |
| 7691349 | Exhaust gas treating method An exhaust gas processing method using a device having an air preheater for preheating air for combustion in a combustion device by using an exhaust gas emitted from the combustion device; a gas-gas heater (GGH) heat recovery device composed of a heat transfer tube ... | 04/06/2010 |
| 7655064 | Particulate matter-containing exhaust emission controlling filter, exhaust emission controlling method and device A particulate matter-removing filter being resistant to clogging and ash blocking, requiring no special means such as back-washing and heating combustion, and being formed of inexpensive materials; and exhaust emission controlling method and device using this. (1) A... | 02/02/2010 |
| 7654396 | Classifier, vertical crusher having the classifier, and coal fired boiler apparatus having the vertical crusher A classifier capable of stably providing particles by further reducing the mixing ratio of coarse particles including a rotating fin (21) classifying solid particles by a centrifugal force, a cylindrical downward flow forming member (13) installed on t... | 02/02/2010 |
| 7651389 | Exhaust smoke-processing system An exhaust smoke processing system comprises air preheater for heating combustion air by exhaust smoke discharged from a boiler, a heat recoverer for heating a heat medium by exhaust smoke discharged from the air preheater, a dust collector for collecting soot and d... | 01/26/2010 |
| 7651329 | Exhaust gas processing device, and method of using the same In an exhaust gas processing device wherein in order to efficiently outwardly discharge heat at high temperatures of about 90-150° C. released from a GGH reheater during the shutdown of a desulfurizer, to prevent damage to equipment and corrosion preventive lining ... | 01/26/2010 |
| 7591987 | Method and apparatus for treating ammonia-containing gas A method for treating an ammonia (NH3)-containing gas, which comprises causing the NH3-containing gas to pass through a catalyst tower (9) firstly with a pre-treatment catalyst layer (1) having, in parallel, a flow path involving ... | 09/22/2009 |
| 7585807 | Production of catalyst for removal of introgen oxides A method is disclosed for producing a NOx catalyst which includes dispersing a hydrated titanium dioxide or dried material, tungstic acid or a salt, and a sol-like material. The sol-like material is formed by dispersing cerium dioxide in a dispersion medi... | 09/08/2009 |
| 7549507 | Duct wall structure The invention relates to an inner heat insulating and inner sound insulating structure of an HRSG duct wall in which a turbine combustion high temperature and high velocity gas whose temperature is approx. 650° C. and velocity is 30 meters per second (m/s) flows, w... | 06/23/2009 |
| 7507381 | Exhaust gas treating apparatus An exhaust gas processing device includes an air preheater for preheating air for combustion in a combustion device by using an exhaust gas emitted from the combustion device; a gas-gas heater heat recovery device composed of a heat transfer tube for recovering the ... | 03/24/2009 |
| 7482588 | Method of calculating radiation Conventionally, a coarse mesh having a same size in that a calculation cell was used regardless to whether the location is near or remote from radiation elements such as calculation cells and wall face elements. Therefore, it took very long calculation time to calcu... | 01/27/2009 |
| 7357100 | Heat exchanger tube panel module, and method of constructing exhaust heat recovery boiler using the same A necessary size and number of modules each obtained by housing a member including heat exchanger tube panels each comprising a heat exchanger tube bundle and headers for the heat exchanger tube bundle, an upper casing of an exhaust heat recovery boiler (HRSG), prov... | 04/15/2008 |
| 7303730 | Waste gas treating device having flow regulator An apparatus having a baffle device and used for treating an exhaust gas, the apparatus comprising: (a) an inlet duct through which the exhaust gas is flowed in, (b) a bend portion, and (c) a catal... | 12/04/2007 |
| 7275503 | Heat transfer tube panel module and method of constructing exhaust heat recovery boiler using the module A method of constructing an exhaust heat recovery boiler. A required number of heat transfer tube group panel modules (20) are produced in an appropriate size according to design specifications of HRSG, where the heat transfer tube group panel modules (20 | 10/02/2007 |
| 7232974 | All position automatic welding head and method for operating the same A welding head which can easily move the torch portion of the welding head in the circumferential direction and the vertical moving direction of the outer circumference of the to-be-welded tubes even in a narrow gap, includes a torch rotating ring that rotates on th... | 06/19/2007 |
| 7205500 | Non-consumable electrode welding torch and welding head with the torch An ultra-flat non-consumable electrode welding torch which allows performing a welding operation through a narrow gap between adjacent piping such as welding piping of a boiler panel, to be mounted on a compact automatic welding head, and a welding head provided wit... | 04/17/2007 |
| 7097814 | Waste gas treating device having flow regulating assembly An apparatus for treating an exhaust gas comprising: (a) an inlet duct through which the exhaust gas is flowed in, (b) a bend portion, and (c) a catalyst duct connected to the inlet duct through th... | 08/29/2006 |
| 7073451 | Furnace wall structure A furnace wall comprises: a furnace wall bottom part composed of furnace wall tubes having upward-spiraled fluid passages; a nose part which has nose wall tubes disposed in a middle part of a furnace rear wall adjoining the furnace wall bottom part; and a screen par... | 07/11/2006 |
| 7005402 | Exhaust gas purifying catalyst compound, catalyst comprising said compound and method for preparing the compound The invention is to provide (i) a catalyst which does not require an activation of catalyst components by means of a calcination which has become a hindrance in the way of obtaining a catalyst having a high activity through a conventional technology and in which cat... | 02/28/2006 |
| 6938560 | Solid fuel boiler and method of operating combustion apparatus There is disclosed a solid fuel boiler including: a furnace including a plurality of solid fuel burners and a furnace wall to perform horizontal firing; a duct through which a part of combustion exhaust gas recirculates to a furnace from a downstream side of the fur... | 09/06/2005 |
| 6890673 | Hydrogen producing apparatus and power generating system using it For the stabilization of the reaction, especially, for maintaining reaction temperature, the feedback control by the feedback unit is performed for to the supply of air (, oxygen, or oxidizing agent), whereas other materials are supplied by the open-loop control acc... | 05/10/2005 |
| 6833117 | Exhaust emission control catalyst element, catalyst structure, production method thereof, exhaust emission control apparatus and exhaust emission control method using the apparatus The catalyst structure of the present invention for purifying an exhaust gas is preferable for increasing the contact of an exhaust gas, to be treated, with a catalyst by disturbing the flow of the exhaust gas in a gas flow passage thereby obtain a highly efficient ... | 12/21/2004 |
| 6759565 | Method for decomposing chlorine-containing organic compound contained in exhaust gas and catalyst for use in the method The invention is to provide (1) a method for decomposing chlorine containing organic compounds (DXNs) contained in an exhaust gas in which method a high decomposition ratio of the DXNs can be obtained even at a low temperature and the effects by SOx can be repressed... | 07/06/2004 |
| 6715432 | Solid fuel burner and method of combustion using solid fuel burner According to a burner of the present invention, a stable combustion is obtained in a wide range from a high-load operation condition to a low-load operation condition even in the case of low quality solid fuel such as brown coal. The amount of air supplied fr... | 04/06/2004 |
| 6710013 | Exhaust emission control catalyst structure Provided is a catalyst structure used for purifying an exhaust gas; to be disposed in an exhaust gas flow passage; preferable for obtaining a highly efficient and compact exhaust gas purifying apparatus; and produced by alternately stacking platelike catalyst... | 03/23/2004 |
| 6592646 | Method of producing direct reduced iron with use of coal-derived gas and apparatus In a method of producing direct reduced iron with use of a coal-derived gas, coal is heated to lower the moisture thereof, and the moisture-lowered coal is gasified in a coal gasification furnace to produce a coal-derived gas containing a reducing gas. Th... | 07/15/2003 |
| 6298796 | Fine coal powder combustion method for a fine coal powder combustion burner A burner for burning fine coal powder comprising: a fine coal powder nozzle 10 for injecting a mixture of the fine coal powder and air; and air nozzles 11, 12 for injecting air: wherein the sufficient amount of air for complete combustion of the fine coal... | 10/09/2001 |
| 6237510 | Combustion burner and combustion device provided with same A combustion burner includes a mixture nozzle (2) defining a mixture fluid passage through which a mixture fluid (1) containing pulverized coal and conveyor gas flows toward a furnace, secondary and tertiary air passages surrounding the mixture nozzle (2)... | 05/29/2001 |
| 6189464 | Pulverized coal combustion burner and combustion method thereby A combustion method utilizing a pulverized coal combustion burner which is provided with a pulverized coal nozzle for jetting a fluid mixture of pulverized coal and air and an air nozzle for jetting air. In the method, a combustion flame formed by the pul... | 02/20/2001 |
| 6152051 | Powered fuel combustion burner with nozzle flow guide A combustion burner includes a mixture nozzle, a gas supply nozzle, and a flow guide. The mixture nozzle extends toward an interior of a furnace, and defines a mixture passage through which a mixture containing powdered solid fuel and gas for transferring... | 11/28/2000 |
