Entries |
Document | Title | Date |
20080202396 | METHODS AND APPARATUSES FOR REMOVING MERCURY-CONTAINING MATERIAL FROM EMISSIONS OF COMBUSTION DEVICES, AND FLUE GAS AND FLYASH RESULTING THEREFROM - A method of removing mercury or mercury-containing material from flue gas produced by a coal-burning main furnace includes feeding coal, which contains mercury or mercury-containing material, to a main furnace which produces flue gas. The method further includes feeding the coal to an auxiliary burner which produces a slipstream of flyash, feeding the slipstream of flyash from the auxiliary burner into the flue gas produced by the main furnace, and introducing a mercury-active oxidant to the coal being fed to the auxiliary burner, the combustion air fed to the auxiliary burner, and/or the flyash. | 08-28-2008 |
20080202397 | Process for reduction of sulfur compounds and nitrogen compounds in the exhaust gases of combustion devices - The present invention is directed to processes and apparatuses for reducing the content of pollutants in a boiler system flue gas resulting from combustion of fuel. The present invention discloses improved slurry injection techniques, re-circulation of flue gas to provide momentum to the injected slurry, a measurement system for obtaining system profile information and a system to optimize the reduction of pollutants in a flue gas by adjusting the injection of slurry suspension based on system profile information. | 08-28-2008 |
20080223270 | METHOD OF USING NANOALLOY ADDITIVES TO REDUCE PLUME OPACITY, SLAGGING, FOULING, CORROSION AND EMISSIONS - A process for improving the operation of combustors includes the steps of burning a carbonaceous fuel in a combustor system and determining combustion conditions within the combustor system that can benefit from a targeted treatment additive, wherein the determinations are made by calculation including computational fluid dynamics and observation The process further includes locating introduction points in the combustor system where introduction of the targeted treatment additive could be accomplished. Based on the previous steps, a treatment regimen for introducing the targeted treatment additive to locations within the combustor system results in one or more benefits selected from the group consisting of reducing the opacity of plume, improving combustion, reducing slag, reducing LOI and/or unburned carbon, reducing corrosion, and improving electrostatic precipitator performance. The targeted treatment additive comprises an alloy represented by the following generic formula (A | 09-18-2008 |
20090007827 | System and Method for Minimizing Nitrogen Oxide (NOx) Emissions in Cyclone Combustors - A combustion system equipped with one or more carbonaceous fuel burning combustors (e.g., slagging Cyclone combustor) and adapted to minimize nitrogen oxide (NO | 01-08-2009 |
20090031933 | DISPOSAL METHOD AND EQUIPMENT FOR EXHAUST GAS FROM COMBUSTION SYSTEM - Carbon dioxide in combustion exhaust gas can be effectively separated and the combustion exhaust gas including the other exhaust gas components condensed through the separation of carbon dioxide can be discharged to the atmosphere. | 02-05-2009 |
20090044737 | Process for Efficient Energy Recovery from Biomass - A method for extracting energy from biomass depleted of at least some carbohydrate, at least some oil, or both by a) introducing the biomass into a vertically elongated combustion chamber having i) at least one suspension burner at the top of the combustion chamber which is capable of projecting a flame down the axis of the combustion chamber, ii) a heat transfer apparatus having at least a portion of a heat collection surface located radially from the flame and below the burner, and iii) an exhaust opening located below the flame and below at least a portion of the heat collection surface; b) combusting the biomass to yield a mixture containing hot flue gas and molten ash above the exhaust opening; c) transferring heat from the hot flue gas to at least a portion of the heat collection surface substantially by radiation prior to any substantial contact of ash to a surface of the combustion chamber, to yield a mixture containing warm flue gas and non-molten ash and having a lower molten ash content than the mixture yielded by the combusting step; and d) cooling the warm flue gas with cold gas, to yield a mixture containing cool flue gas and non-molten ash and having a lower molten ash content than the mixture yielded by the transferring step. | 02-19-2009 |
20090084294 | Combustion System and Process - A method and apparatus for reducing NO | 04-02-2009 |
20090120338 | Process and Apparatus for Low-NOx Combustion - The invention relates to a process and an apparatus for low-NOx combustion with at least one burner ( | 05-14-2009 |
20090158978 | METHOD OF CONTROLLING A PROCESS OF GENERATING POWER BY OXYFUEL COMBUSTION - A method of controlling a process of generating power in a power plant with a boiler by combusting carbonaceous fuel with substantially pure oxygen. At full load conditions, the method includes introducing a first carbonaceous fuel feed stream into a furnace, introducing a first substantially pure oxygen feed stream into the furnace for combusting the first carbonaceous fuel feed stream with the oxygen, and recirculating a portion of the exhaust gas discharged from the furnace at a first recirculation flow rate to the furnace, to form, together with the first substantially pure oxygen feed stream, a first inlet gas stream having a predetermined average oxygen content, thereby discharging exhaust gas from the furnace at a first discharge flow rate. In second load conditions, corresponding to at most 90% load, the method includes introducing a second carbonaceous fuel feed stream into the furnace, introducing a second substantially pure oxygen feed stream into the furnace for combusting the second carbonaceous fuel feed stream with the oxygen, and recirculating a portion of the exhaust gas discharged from the furnace at a second recirculation flow rate to the furnace, to form, together with the second substantially pure oxygen feed stream, a second inlet gas stream, so as to discharge exhaust gas from the furnace at a second discharge flow rate, and controlling the second recirculation flow rate to be from the first recirculation flow rate to a value providing the second discharge flow rate to be substantially as high as the first discharge flow rate. | 06-25-2009 |
20090199749 | COMBUSTION INSTALLATION WITH CO2 RECOVERY - An installation for combustion ( | 08-13-2009 |
20090211503 | AIR-FIRED CO2 CAPTURE READY CIRCULATING FLUIDIZED BED STEAM GENERATORS - A combustor | 08-27-2009 |
20090235848 | METHOD AND APPARATUS FOR REMOVING MERCURY AND PARTICULATES FROM COMBUSTION EXHAUST GAS - A method of reducing particulate matter and mercury emissions in a combustion flue gas includes, in an exemplary embodiment, combusting a fuel resulting in generation a flue gas flow, cooling the flue gas flow within a duct, positioning a flow conditioning apparatus within the duct, enhancing a reaction rate of the mercury and carbon-containing fly ash particles by directing the flue gas flow through the flow conditioning apparatus to mix the carbon-containing fly ash particles and mercury within the flue gas flow and to facilitate at least one of oxidation of the mercury and binding the mercury to the carbon-containing fly ash particles, collecting a portion of the carbon-containing fly ash particles in the flow conditioning apparatus, and directing the flue gas flow to a particulate collection device to remove the remaining portion of the fly ash particles from flue gas flow. | 09-24-2009 |
20090249988 | Apparatus and Process for Oxycombustion with CO2 Capture - An oxycombustion apparatus comprising an air separation unit ( | 10-08-2009 |
20090255450 | OXY-COMBUSTION COAL FIRED BOILER AND METHOD OF TRANSITIONING BETWEEN AIR AND OXYGEN FIRING - A new and unique boiler and method of transition between air and Oxy-combustion in a coal fired combustion process wherein near pure oxygen may be introduced to the boiler furnace in several locations including directly into the flame through the burner and/or directly into the furnace as nearly pure oxygen, and/or into the recycle flue gas streams to the burners, including both primary and secondary streams. | 10-15-2009 |
20090314190 | REDUCTION OF CO AND NOX IN FULL BURN REGENERATOR FLUE GAS - A hot oxygen stream containing radicals is fed into a gas stream, such as a catalyst regenerator flue gas stream, that contains carbon monoxide to convert carbon monoxide to carbon dioxide. | 12-24-2009 |
20100058962 | METHOD FOR INJECTING A SUBSTANCE INTO A BOILER OF A WASTE INCINERATION PLANT - A method is provided for injecting a substance into a boiler of a waste incineration plant using a gaseous propellant, the substance being conducted, starting from at least one distributor, via lines which branch off from the distributor, in each case to a nozzle which is assigned to the respective line and by means of which the substance and the propellant are injected into the boiler. The substance quantity to be conducted to the respective nozzle is set in the distributor. The boiler is subdivided into multiple boiler sectors, in which the nozzles are arranged in a plurality of horizontal nozzle planes. To each boiler sector at least one separate distributor is assigned. The substance and the propellant are combined upstream of the branch-off with the respective line. | 03-11-2010 |
20100077944 | COMBUSTION SYSTEM WITH PRECOMBUSTOR - A precombustor having a chamber having a first end and a second end, and an inlet configured to deliver a substantially parallel flow of solid fuel surrounded by oxygen at the first end. The first end further includes a recirculation step and the second end fluidly communicates with a furnace. The inlet and the recirculation step are arranged to form a recirculation zone of at least a portion of the solid fuel and the oxygen. A combustion system and method for operating a combustion system are also disclosed. | 04-01-2010 |
20100077945 | CONVECTIVE SECTION COMBUSTION - An oxy/coal combustion system and method include a furnace arranged and disposed to receive and combust a first solid fuel to form a combustion fluid, a convective section having one or more inlet devices, the convective section arranged and disposed to receive and combust a second fuel in the presence of the oxygen, and one or more heat exchangers arranged and disposed to exchange heat with the combustion fluid. | 04-01-2010 |
20100077946 | PROCESS TEMPERATURE CONTROL IN OXY/FUEL COMBUSTION SYSTEM - An oxy/fuel combustion system having a furnace arranged and disposed to combust a fuel to form a combustion fluid. The system further includes a convective section having at least one heat exchanger arranged and disposed to exchange heat between the combustion fluid and steam for use in a steam turbine. A flue gas recycle is arranged and disposed to recycle at least a portion of the combustion fluid as a recycled flue gas, the flue gas recycle having at least two expellant locations downstream of a primary combustion zone. The system includes a flow control mechanism that provides controlled amounts of the recycled flue gas to the at least two expellant locations to control temperature of the steam. | 04-01-2010 |
20100077947 | METHOD OF COMBUSTING SULFUR-CONTAINING FUEL - A method of combusting sulfur-containing fuel in a circulating fluidized bed boiler includes the steps of (a) feeding sulfur-containing fuel into a furnace of the circulating fluidized bed boiler, (b) combusting the fuel with oxidant gas consisting essentially of pure oxygen and circulated exhaust gas, so as to form exhaust gas having carbon dioxide and water as its main components, and (c) feeding calcium carbonate containing material into the furnace so as to capture sulfur dioxide into calcium sulfate in the furnace. The temperature in the furnace is maintained above 870° C. | 04-01-2010 |
20100101464 | METHODS FOR OPERATING A FLUIDIZED-BED REACTOR - A method for operating a fluidized-bed reactor includes introducing an alkali-containing material into a fluidized-bed reactor and introducing hydrous clay into the fluidized-bed reactor, the hydrous clay having a moisture content of at least about 5% by weight. The method further includes heating at least a portion of the alkali-containing material and hydrous clay, such that at least a portion of the hydrous clay is at least partially calcined and the at least partially calcined clay adsorbs at least a portion of alkali present in the fluidized-bed reactor. The method further includes removing at least a portion of the at least partially calcined clay and adsorbed alkali from the fluidized-bed reactor. | 04-29-2010 |
20100116183 | USE OF HYDROCARBON EMULSIONS AS A REBURN FUEL TO REDUCE NOX EMISSIONS - An in-furnace combustion application process method and apparatus reduces nitrogen oxides in flue gas by injecting a bitumen, carbon residue or an asphalt water emulsion or a mixture thereof into flue gas so that the three types of emulsions (injected individually or as a blend) mixes with said flue gas. The emulsions are preferably atomized before injection and may also be injected in jet streams. | 05-13-2010 |
20100126395 | Process for producing steam and/or power from oil residues with high sulfur content - Power is produced using fuel, preferably with a sulfur content larger than 1% wt, from raw and/or preprocessed oil residues which are burned alone, i.e. without any addition of sorbents, diluents or the like, with a CFB boiler, a pitch boiler or a downshot boiler to generate high pressure steam and/or power and residual emissions. Residual emissions are cleaned to simultaneously remove PM, NO | 05-27-2010 |
20100139536 | METHOD AND PLANT FOR CO2 CAPTURING - A method and a plant for capturing CO | 06-10-2010 |
20100186645 | APPARATUS AND METHODS FOR REDUCING WOOD BURNING APPARATUS EMISSIONS - An embodiment is an emissions reduction system for exhaust gases. The emissions reduction system includes a reaction chamber with one or more parallel flow tubes. Each parallel flow tube includes a heating element to heat exhaust gases to oxidize PICs and other pollutants contained in and/or carried by the exhaust gases. The reaction chamber may also include an adjustable bypass for the exhaust gases to variably bypass the parallel flow tubes. The reaction chamber may further include an oxidizing agent injector to improve the oxidation of the PICs and other pollutants in the reaction chamber. The emissions reduction system of an embodiment may further include a catalyst bed in fluid communication with the reaction chamber to further reduce emissions. | 07-29-2010 |
20100242815 | SEALPOT AND METHOD FOR CONTROLLING A SOLIDS FLOW RATE THERETHROUGH - A sealpot for a combustion power plant includes a downcomer standpipe which receives solids of the combustion power plant, a bed including a first end and a second opposite end, the first end connected to the downcomer standpipe, a discharge standpipe disposed at the second opposite end of the bed, and an orifice plate disposed between the bed and the discharge standpipe separating the discharge standpipe from the bed. The orifice plate includes apertures disposed at a height above the bed which allow transport of fluidized solids and gas through the orifice plate. | 09-30-2010 |
20100263577 | POLLUTION ABATEMENT PROCESS FOR FOSSIL FUEL-FIRED BOILERS - The present invention provides improved boiler assemblies ( | 10-21-2010 |
20100300336 | REDUCTION OF MERCURY FROM A COAL FIRED BOILER - A method and system are disclosed for achieving reduced mercury emissions from a power plant at a minimum cost. The parameters of the combustion chamber and a sorbent injector are manipulated to control the residual carbon in ash and the injected sorbent. These two elements combine to reduce mercury in the exhaust gas to an acceptable level. | 12-02-2010 |
20110011315 | Oxyfuel Boiler and Control Method for Oxyfuel Boiler - An oxyfuel boiler structured so as to mix oxygen separated from air with a part of exhaust gas branched from exhaust gas discharged from the boiler for generating vapor and supplying to a vapor demand facility by burning coal fuel, and supply the mixed gas to the boiler as an oxidizing gas for burning the coal, wherein an air separation unit for separating air and manufacturing oxygen from air, an oxygen supply system for leading the oxygen manufactured by the air separation unit to the oxyfuel boiler, a recirculation system for leading a part of exhaust gas branched from the exhaust gas discharged from the oxyfuel boiler to the oxyfuel boiler, and a recirculation fan for supplying the exhaust gas to the recirculation system are installed, respectively. | 01-20-2011 |
20110023760 | PROCESS FOR USING A FACILITY FOR COMBUSTING CARBONACEOUS MATERIALS AND RELATING FACILITY - The invention concerns a process for using a facility in which circulates at least one oxide which is reduced and then oxidized in each of both reactors ( | 02-03-2011 |
20110030593 | Method for desulfurizing a fluid and methods for operating a coal combustion system - A method for desulfurizing a fluid comprising at least one sulfur compound is provided. The method includes providing an oxide composition comprising at least one byproduct oxide from a process for removing one or more impurities from coal and contacting the oxide composition with the fluid. The oxide composition reacts with the at least one sulfur compound to form a solid precipitate. Methods for operating a coal combustion system are also provided. | 02-10-2011 |
20110048296 | PROCESS FOR USING A FACILITY FOR COMBUSTING CARBONACEOUS MATERIALS - A process for using a facility having a first reactor ( | 03-03-2011 |
20110056417 | CATALYST ASH PROTECTOR - A combustion apparatus includes: a combustion device operable to produce flue gas having large particulate ash entrained therein; an outlet duct coupled in flow communication with the combustion device so as to receive the flue gas; a screen positioned at least partially in the outlet duct downstream of the combustion device, the screen effective to trap large particulate ash while permitting flow of the flue gas therethrough; and apparatus operable to remove large particulate ash from the screen while at least a portion of the screen remains inside the duct. | 03-10-2011 |
20110073023 | EXHAUST PROCESSING AND HEAT RECOVERY SYSTEM - A thermally efficiency regenerative air preheater | 03-31-2011 |
20110132243 | METHOD AND APPARATUS OF CONTROLLING EXHAUST GAS IN OXYFUEL COMBUSTION BOILER - In an apparatus of controlling an exhaust gas in an oxyfuel combustion boiler having the boiler | 06-09-2011 |
20110197797 | METHOD AND APPARATUS FOR EFFICIENT PRODUCTION OF ACTIVATED CARBON - This invention relates to a system for regenerating or manufacturing activated carbon wherein the exhaust gases and vapors from various sections of the furnace are supplied to other sections of the furnace in a recycling manner or are simultaneously cleaned and transformed into fuel gas. In a down-flow embodiment, the water vapor and calorific gasses generated in excess in the drying and devolatilization sections, respectively, are provided, either directly or through a combustion chamber, to the activation section. In an up-flow embodiment, heat from the activation section is recycled to the drying and devolatilization section and the down-flow brings the water vapor from the drying section and volatile material from the devolatilization section into the activation section where it can be effectively used. | 08-18-2011 |
20110214593 | ECO-FRIENDLY SYSTEM AND PROCESS FOR GENERATING THERMAL ENERGY FROM WASTE BIOMASS - An eco-friendly system for generating thermal energy from waste biomass comprises a furnace, a set of boiler tubes placed on the top of the furnace, a rectangular or tubular structure housing the boiler tube and the furnace, an outlet for the flue gases leading to a cyclone, said cyclone carrying a tubular body for leading away a part of flue gases and fitted with a butterfly control valve for regulating flow of effluent gases, a tubular body connecting the body to the suction blower, a water tank, a hopper for waste biomass, and a fuel injection blower for introducing fuel inside the furnace by means of pressurized air jet blown through the pipe. | 09-08-2011 |
20110265697 | Circulating Fluidized Bed Combustor and a Method of Operating a Circulating Fluidized Bed Combustor - A circulating fluidized bed combustor arrangement includes (a) a circulating fluidized bed reactor in which (i) a combustion chamber combusts a fuel material in a suspension of solid particles of a circulating fluidized bed, (ii) a first cyclone separator arrangement receives a mixture of gases and solid particles from the combustion chamber for separating a first fraction of the solid particles from the exhaust gases, and (iii) a solid particle return system connected to the first cyclone separator returns separated solid particles to the combustion chamber, (b) a heat transfer section including a water/steam heat exchanger section arranged after the first cyclone separator arrangement in the exhaust gas flow path, (c) a heat recovery device provided in connection with the combustion chamber, the first cyclone separator arrangement and the heat transfer section being arranged for recovering heat resulting from the combustion process in the combustion chamber, (d) a selective catalytic reduction system arranged in the exhaust gas flow path, after the heat transfer section, for removing NOx from the exhaust gas, (e) a device for injecting NOx reducing agent into the exhaust gases upstream of the selective catalytic reduction system, and (f) a second cyclone separator arrangement provided downstream of the first cyclone separator arrangement and upstream of the heat transfer section, in which a second fraction of the solid particles is separated form the exhaust gases. | 11-03-2011 |
20110265698 | SYSTEM AND METHOD FOR REUTILIZING CO2 FROM COMBUSTED CARBONACEOUS MATERIAL - A system for generating steam supplies of coal another material to one or more processing chambers. Each processing chamber includes a plasma arc torch that heats the material in the presence of water and a treatment gas at an extremely high temperature. A product gas stream is delivered from each processing chamber to a heat recovery steam generator (HRSG). Each HRSG generates steam that is used to drive a steam turbine. The processing chambers and HRSGs are fluidly connected so that the product gas streams moves from a processing chamber, to a HRSG, to another processing chamber, and then to another HRSG, etc. Within any of the HRSGs, or after the final HRSG, water in the product gas may condense to liquid water that may be redirected to any of the processing chambers. In addition, CO | 11-03-2011 |
20110290163 | HYBRID OXY-FUEL BOILER SYSTEM - An air-fired combustion unit such as a utility boiler is converted to oxy-fired operation and a second oxy-fired combustion unit is operatively connected upstream so that its flue gas is fed into the combustion chamber of the first unit. | 12-01-2011 |
20110290164 | MUNICIPAL SOLID WASTE FUEL STEAM GENERATOR WITH WATERWALL FURNACE PLATENS - A steam generator includes a furnace configured and adapted to generate a stream of furnace exit gases from the combustion of municipal solid waste fuel. At least one superheater is disposed within an upper portion of the furnace or backpass. The superheater is configured and adapted to superheat fluids within the superheater by facilitating heat transfer between fluids within the superheater and furnace exit gases outside the superheater. At least one waterwall furnace platen is disposed within the furnace upstream from the superheater, the waterwall furnace platen is configured and adapted to lower furnace exit gas temperature at the superheater by facilitating heat transfer between fluids within the waterwall furnace platen and furnace exit gases outside the waterwall furnace platen. | 12-01-2011 |
20120037056 | Process for Operating a Fossil Fuel Fired Power Plant - An integrated process for operating a fossil fuel fired power plant including: producing hydrogen gas and an aqueous solution of hydrogen peroxide via a process including: dissociating hydrogen gas and oxygen gas from water; pressurizing the hydrogen gas and the oxygen gas; and mixing, under pressure, the oxygen gas and at least about a stoichiometric portion of the hydrogen gas with an aqueous solution of a catalyst and a promoter to form the aqueous solution of hydrogen peroxide; supplying a remainder of the hydrogen gas to at least one of (a) a storage means, (b) a boiler detonation cleaning system of the fossil fuel fired power plant, and (c) an electrical generator of the fossil fuel fired power plant; and injecting the aqueous solution of hydrogen peroxide into an air pollution control system of the fossil fuel fired power plant. | 02-16-2012 |
20120055385 | METHOD FOR THE SEPARATION OF GASES | 03-08-2012 |
20120060728 | Power station and method for operating the same - A combustion system comprising a burner and a combustion chamber, is connected by way of a line to a membrane unit having a high-temperature membrane for extracting the combustion oxygen from the air, the membrane unit having a feed line for a flushing gas on the permeate side. The combustion system further comprises a circulation element for recirculated flue gas, a heat exchanger being disposed upstream of the membrane unit inside the flue gas line. Disclosed is a method for operating this combustion system, in which carbon-containing fuel is burned in an oxygen-flue gas atmosphere, and in which the oxygen for combustion is produced from air by means of a membrane unit comprising a high-temperature membrane, and in which the flue gas is in part recirculated. Disclosed are the steps of first cooling the recirculated flue gas, optionally for a flue gas scrubbing process, subsequently reheating the cooled flue gas to ensure the necessary operating temperature of the membrane, the heating energy being extracted by way of a heat exchange with the flue gas having the corresponding temperature level of the combustion process, and feeding the flue gas heated in this manner to the membrane unit as a flushing gas. | 03-15-2012 |
20120160142 | Method of and Apparatus for Selective Catalytic NOx Reduction in a Power Boiler - A method of selective catalytic NO | 06-28-2012 |
20120222593 | OXY-FUEL COMBUSTION WITH INTEGRATED POLLUTION CONTROL - An oxygen fueled integrated pollutant removal and combustion system includes a combustion system and an integrated pollutant removal system. The combustion system includes a furnace having at least one burner that is configured to substantially prevent the introduction of air. An oxygen supply supplies oxygen at a predetermine purity greater than 21 percent and a carbon based fuel supply supplies a carbon based fuel. Oxygen and fuel are fed into the furnace in controlled proportion to each other and combustion is controlled to produce a flame temperature in excess The integrated. pollutant removal system includes at least one direct contact heat exchanger for bringing the flue gas into intimated contact with a cooling liquid to produce a pollutant-laden liquid stream and a stripped flue gas stream and at least one compressor for receiving and compressing the stripped flue gas stream. | 09-06-2012 |
20120255470 | BIOMASS BOILER SCR NOX & CO REDUCTION SYSTEM - A selective catalytic reduction system and method for reducing nitrogen oxide (NO | 10-11-2012 |
20120285353 | PROCESS AND SYSTEM FOR QUENCHING HEAT, SCRUBBING, CLEANING AND NEUTRALIZING ACIDIC MEDIA PRESENT IN THE FLUE GAS FROM THE FIRING OF FOSSIL FUEL - The present invention provides a novel process for quenching heat, scrubbing, cleaning and neutralizing the hot and dirty fossil fuel fired flue gas liberated by a fossil fuel fired boiler using the high temperature and high pressure present in fossil fuel fired boiler blow-down comprising the steps of quenching the fossil fuel fired flue gas by evaporating sufficient quantity of water from sea water/scrubbing liquid and mixing vapors thus generated with hot and dirty flue gas; using the high temperature and high pressure present in fossil fuel fired boiler blow-down (waste water) for atomizing/spraying high alkalinity sea water/scrubbing liquid on said flue gas to neutralize the acidic substances in said flue gas. | 11-15-2012 |
20130019785 | Carbon Sequestration in Municipal Solid Waste to Energy Plants - This invention describes a process for a complete sequestration of carbon (CO | 01-24-2013 |
20130047903 | METHOD OF REGENERATING NOx REMOVAL CATALYST AND METHOD OF OPERATING HEAVY-OIL FIRED COMBUSTION APPARATUS - The method includes a pretreatment step during an operation of a boiler in which in a predetermined period of time before shutdown of the boiler, a part of combustion gas that has bypassed an economizer provided in a flue gas duct for flue gas from the boiler is supplied to an upstream of a NO | 02-28-2013 |
20130055937 | FLUE GAS DESULFURIZATION DEVICE, COMBUSTION SYSTEM AND COMBUSTION METHOD - A desulfurization device releases exhaust gas into the atmosphere without reduction in CO | 03-07-2013 |
20130098279 | Combustion Apparatus And Applications Thereof - In one aspect, combustion apparatus are described herein which, in some embodiments, can provide advantageous NO | 04-25-2013 |
20130145974 | COMPOSITION AND METHOD FOR REDUCING SOx and NOx EMISSIONS FROM COMBUSTION OF FUEL - A fuel mixture characterized by reduced SO | 06-13-2013 |
20130186313 | LOW EMISSION, WOOD FUELED HYDRONIC HEATER - A wood burning hydronic heater comprises a primary firebox into which the wood is loaded and wherein initial combustion occurs. The heater also includes a secondary combustion chamber below the primary firebox into which the combustible gases from the primary firebox are forced and into which a fresh air stream is passed to burn the gases. A primary heat exchanger downstream of the secondary combustion chamber is adapted to reduce the temperature of the exhaust exiting from the secondary combustion chamber. A catalytic combustor, located in a chamber downstream of the secondary combustion chamber and primary heat exchanger, completes combustion and reduces emissions. | 07-25-2013 |
20130228105 | THERMAL EFFICIENCY IMPROVEMENT METHOD FOR HEATING FURNACE AND THERMAL EFFICIENCY IMPROVEMENT DEVICE FOR HEATING FURNACE - A thermal efficiency improvement device | 09-05-2013 |
20130255550 | METHOD AND APPARATUS FOR TREATMENT OF UNBURNTS - A method and apparatus for treatment of unburnts in a flue stream | 10-03-2013 |
20130319304 | Smokeless wood burner and a new process to create steam to generate electricity - A method of burning a fuel with high efficiency comprises providing a combustion chamber having a combustion region, providing a natural fuel within the combustion chamber on one side of the combustion region, providing a filtered fuel, and providing a substantially cylindrical injector on an opposing side of the combustion region, the injector comprising: an exhaust port in an axial center of the injector; a notch surrounding a circumference of the injector; and a plurality of intake ports in a periphery of the injector and configured to port fluid from the notch to the combustion region. The flow of the fluid toward the center of the combustion region, while the natural fuel is burning within the combustion chamber, causes at least one vortex in which the combustible substances further burn with the air and the filtered fuel. | 12-05-2013 |
20130333598 | CONVERTER EXHAUST GAS RECOVERY APPARATUS AND CONVERTER EXHAUST GAS RECOVERY METHOD - A converter exhaust gas recovery apparatus includes a furnace top oxygen analyzer that analyzes an oxygen concentration in exhaust gas on an exhaust gas path and on an upstream side of a dust collection position where dust collection is performed and a furnace top CO analyzer that analyzes a CO concentration in the exhaust gas; and a furnace bottom oxygen analyzer that irradiates the exhaust gas that flows on a downstream side of the dust collection position with a laser light and analyzes the oxygen concentration based on quantity-of-light changes caused by a light absorption of the laser light. | 12-19-2013 |
20140041562 | METHOD OF CLEANING A CARBON DIOXIDE RICH FLUE GAS AND A BOILER SYSTEM - A boiler system ( | 02-13-2014 |
20140053761 | Dual Stream System and Method for Producing Carbon Dioxide - A system for producing carbon dioxide from a process gas that includes a hydrocarbon, the system including a combustion subsystem configured to combust the hydrocarbon and output a combustion effluent, wherein the combustion effluent includes carbon dioxide and water, a first separation subsystem configured to separate a first quantity of carbon dioxide from the combustion effluent, and a second separation subsystem configured to separate a second quantity of carbon dioxide from the combustion effluent. | 02-27-2014 |
20140076213 | PROCESS FOR ENABLING CARBON-CAPTURE FROM EXISTING COMBUSTION PROCESSES - A process of producing a feed from a solid oxide electrolysis cell. A first portion of the flue gas produced from a combustion process is directed to the anode side of the solid oxide electrolysis cell. The feed and a second portion of the flue gas are then mixed to produce an enhanced feed. The enhanced feed is then mixed with fuel and combusted in the combustion process to produce flue gas. The flue gas comprises greater than 50 wt % CO | 03-20-2014 |
20140102343 | DESULFURIZATION IN A REGENERATIVE CALCIUM CYCLE SYSTEM - The present invention relates to a method and system for combustion of a fuel and treatment of the resulting flue gas. The method includes: combusting a fuel with air or oxygen to produce a hot flue gas stream containing at least carbon dioxide (CO | 04-17-2014 |
20140109806 | HYBRID WOOD BURNING FIREPLACE ASSEMBLY - A hybrid wood-burning fireplace assembly configured for burning wood-based fuel, wherein the burning generates combustion exhaust. The assembly comprising a fire box having an interior area, a baffle in the interior area defining lower and upper combustion chambers relative to the baffle. The upper combustion chamber has an upper exhaust passageway between baffle and the top portion of the firebox. A secondary combustion airway has air outlets in the firebox that direct the secondary combustion air adjacent to the baffle to mix with the exhaust for non-catalytic secondary combustion of the exhaust before the exhaust flows through the upper exhaust passageway. A catalytic combustion unit is positioned above the baffle and across the upper exhaust passageway, whereby the exhaust will pass through the catalytic combustion unit after the non-catalytic secondary combustion of the exhaust and before the exhaust exits the upper combustion chamber through the upper exhaust passageway. | 04-24-2014 |
20140109807 | METHOD AND DEVICE FOR REMOVING MERCURY DURING THE PRODUCTION OF CEMENT CLINKER - A method and a device remove mercury from exhaust gases during a production of cement clinker. The device contains a pre-heating stage, a feed point for raw materials required for the production of the cement clinker, a rotary kiln for burning the raw materials, a filter stage for removing dust from the exhaust gases conducted in the main flow, and a raw mix mill for partially mill drying the raw materials. A circuit for the mercury in the exhaust gases is formed between the pre-heating stage and the raw mix mill or the filter stage. To achieve good mercury removal at low cost, a sub-flow of 1 to 30 volume percent of the exhaust gases is branched off from the main flow of the exhaust gases having a temperature of at least 300° C. A separator and thereafter at least one stage for removing mercury are arranged in the sub-flow. | 04-24-2014 |
20140116304 | OXY-FUEL BOILER SYSTEM AND ITS OPERATION - The present disclosure relates to a method of operating a boiler system that includes an oxy-fuel boiler in which an oxygen stream and a fuel stream are combusted to generate a flue gas stream. An air separation unit produces the oxygen stream for the oxy-fuel boiler. A gas processing unit cleans and compresses at least a portion of the flue gas stream generated in the oxy-fuel boiler producing a pressurized carbon dioxide stream. The method includes operating the boiler system, at least for a period of time, in a recirculation mode, during which a carbon dioxide stream from a CO | 05-01-2014 |
20140137779 | NEAR ZERO EMISSIONS PRODUCTION OF CLEAN HIGH PRESSURE STEAM - Substantially pure high pressure steam is produced within a high pressure heat exchanger. Heat for the high pressure heat exchanger is provided from an outlet of an oxy-fuel combustion gas generator which discharges a steam/CO | 05-22-2014 |
20140137780 | SYSTEM AND METHOD FOR INTEGRATED ADSORPTIVE GAS SEPARATION OF COMBUSTION GASES - An integrated fuel combustion system with adsorptive gas separation separates a portion of carbon dioxide from a combustion gas mixture and provides for recycle of separated carbon dioxide to the intake of the fuel combustor for combustion. A process for carbon dioxide separation and recycle includes: admitting combustion gas to an adsorptive gas separation system contactor containing adsorbent material; adsorbing a portion of carbon dioxide; recovering a first product gas depleted in carbon dioxide for release or use; desorbing carbon dioxide from the adsorbent material and recovering a desorbed second product gas enriched in carbon dioxide for sequestration or use; admitting a conditioning fluid into the contactor and desorbing a second portion of carbon dioxide to recover a carbon dioxide enriched conditioning stream; and recycling a portion of the carbon dioxide enriched conditioning stream to an inlet of fuel combustor to pass through the fuel combustor for combustion. | 05-22-2014 |
20140144355 | OXY-FUEL PLANT WITH FLUE GAS COMPRESSION AND METHOD - A method of and control apparatus for operation of a boiler plant are described. The boiler plant has a furnace volume, an oxyfuel firing system for oxyfuel combustion of fuel in the furnace volume, and a compression system for compression of gases exhausted from the furnace volume after combustion. The method and control apparatus are characterized by the step of controlling mass flow of gases through the compression system as a means to control pressure within the furnace volume. This invention relates to both single and multi unit arrangements. | 05-29-2014 |
20140150699 | METHOD AND FOSSIL-FUEL-FIRED POWER PLANT FOR RECOVERING A CONDENSATE - A fossil-fuel-fired power plant, having a combustion device, a CO | 06-05-2014 |
20140158030 | METHOD AND SYSTEM FOR CAPTURING CARBON DIOXIDE IN AN OXYFIRING PROCESS WHERE OXYGEN IS SUPPLIED BY STEAM ENHANCED OXYGEN RELEASE FROM REGENERABLE METAL OXIDE SORBENTS - An oxyfiring system and method for capturing carbon dioxide in a combustion process is disclosed. The oxyfiring system comprises (a) an oxidation reactor for oxidizing a reduced metal oxide; (b) a decomposition reactor wherein oxidized metal oxide sorbents are reduced with oxygen being released and a flue gas with an oxygen enriched carbon dioxide stream is produced; (c) a fuel combustion reactor for combusting a primary fuel and the oxygen enriched carbon dioxide stream into a primary flue gas; and (d) separation apparatus for separating a portion of the primary flue gas so that a carbon dioxide enriched stream can be sent to the decomposition reactor. Steam may be added to assist in controlling the partial pressure of oxygen during decomposition of the metal oxide and a condenser may be used to remove water from the oxygen enriched flue gas. | 06-12-2014 |
20140196639 | SYSTEM AND METHOD FOR CONTROLLING ONE OR MORE PROCESS PARAMETERS ASSOCIATED WITH A COMBUSTION PROCESS - The present invention relates generally to the generation of steam via the use of a combustion process to produce heat and, in one embodiment, to a device, system and/or method that enables one to control one or more process parameters of a combustion process so as to yield at least one desirable change in at least one downstream parameter. In one embodiment, the present invention is directed to a system and/or method for controlling at least one process parameter of a combustion process so as to yield at least one desirable change in at least one downstream process parameter associated with one or more of a wet flue gas desulfurization (WFGD) unit, a particulate collection device and/or control of additives thereto and/or a nitrogen oxide control device and/or control of additives thereto and/or additives to the system. | 07-17-2014 |
20140208998 | STAGED COMBUSTION OF SULFUREOUS COMBUSTIBLE EFFLUENTS WITH RECOVERY OF THE SULFUR IN THE CLAUS PROCESS - The invention relates to a process for advantageously efficiently treating a sulfureous combustible effluent stream by recovering the sulfur in elemental form. This process consists especially of the succession of two steps:
| 07-31-2014 |
20140216309 | SYSTEM AND METHOD FOR INCREASING THE SERVICE LIFE AND/OR CATALYTIC ACTIVITY OF AN SCR CATALYST AND CONTROL OF MULTIPLE EMISSIONS - The present invention relates generally to the field of emission control equipment for boilers, heaters, kilns, or other flue gas-, or combustion gas-, generating devices (e.g., those located at power plants, processing plants, etc.) and, in particular to a new and useful method and apparatus for reducing or preventing the poisoning and/or contamination of an SCR catalyst. In another embodiment, the method and apparatus of the present invention is designed to protect the SCR catalyst. In still another embodiment, the present invention relates to a method and apparatus for increasing the service life and/or catalytic activity of an SCR catalyst while simultaneously controlling various emissions. | 08-07-2014 |
20140230703 | OXY-FUEL COMBUSTION WITH INTEGRATED POLLUTION CONTROL - An oxygen fueled integrated pollutant removal and combustion system includes a combustion system and an integrated pollutant removal system. The combustion system includes a furnace having at least one burner that is configured to substantially prevent the introduction of air. An oxygen supply supplies oxygen at a predetermine purity greater than 21 percent and a carbon based fuel supply supplies a carbon based fuel. Oxygen and fuel are fed into the furnace in controlled proportion to each other and combustion is controlled to produce a flame temperature in excess of 3000 degrees F. and a flue gas stream containing CO2 and other gases. The flue gas stream is substantially void of non-fuel borne nitrogen containing combustion produced gaseous compounds. The integrated pollutant removal system includes at least one direct contact heat exchanger for bringing the flue gas into intimated contact with a cooling liquid to produce a pollutant-laden liquid stream and a stripped flue gas stream and at least one compressor for receiving and compressing the stripped flue gas stream. | 08-21-2014 |
20140251191 | ELECTRICALLY-DRIVEN CLASSIFICATION OF COMBUSTION PARTICLES - In a combustion system, a charge source is configured to cooperate with a collection plate and a director conduit to cause at least one particle charge-to-mass classification to be reintroduced to a flame for further reaction. | 09-11-2014 |
20140305353 | ENERGY EFFICIENT, LOW EMISSIONS SHALE OIL RECOVERY PROCESS - A process for the energy efficient, environmentally friendly recovery of liquid and gaseous products from solid or semi-solid hydrocarbon resources, in particular, oil shale or tar sands. The process involves non-oxidative pyrolysis to recover fluid energy values, oxidative combustion to recover energy values as recoverable heat, and environmental sequestration of gases produced. | 10-16-2014 |
20140318429 | SOLID FUEL HEATING DEVICE - Heating devices and methods for mitigating heating device pollution are generally described. In an example embodiment, a heating device includes a primary combustion chamber for combustion of a fuel. A first and a second secondary combustion chamber are in fluid communication with the primary combustion chamber for receiving an exhaust flow of combustion products from the primary combustion chamber and are configured for combustion of one or more combustion products received from the primary combustion chamber. The first and second secondary combustion chambers may provide parallel fluid paths from the primary combustion chamber. A secondary combustion selector is provided for selectively allowing the exhaust flow through the first and second secondary combustion chambers. | 10-30-2014 |
20140331905 | METHOD AND SYSTEM FOR CONTROLLING MERCURY EMISSIONS FROM COAL-FIRED THERMAL PROCESSES - The present disclosure is directed to the use of elemental or speciated iodine and bromine to control total mercury emissions. | 11-13-2014 |
20140373764 | METHODS AND APPARATUS FOR OXIDATION OF UNBURNTS - A method and apparatus for treatment of unburnts utilizing oxygen carrier particles, which may be CLOU particles, oxidized in an air reactor and transmitted to a post oxidation reactor as shown in FIG. | 12-25-2014 |
20150040806 | METHOD FOR TRANSPORTING IMPURITIES IN PRESSURIZED FLUIDIZED FURNACE SYSTEM - A method for efficiently conveying impurities in a pressurized fluidized incinerator system is provided. Cleaning gas is supplied to an upper valve, and thereafter, the upper valve is driven so as to communicate an upper discharge device and a tank. The upper discharge device is driven so as to convey the impurities from the dust collector to the tank, and thereafter, the upper discharge device is stopped and the upper valve is driven so as not to communicate the upper discharge device and the tank. Thereafter, the supply of the cleaning gas to the upper valve is stopped. | 02-12-2015 |
20150136003 | CONTROL OF COMBUSTION SYSTEM EMISSIONS - A process for capturing undesirable combustion products produced in a high temperature combustion system in which a carbonaceous fuel is utilized. Very finely sized particles of alkaline earth carbonates or hydroxides, with or without added ground ash, are provided in slurry form, are dried and milled to provide unagglomerated, sub-micron-sized particles that are injected along with pulverized coal into the high temperature combustion zone of a furnace. The particles capture and neutralize the gases that result in condensable acids, including SO | 05-21-2015 |
20150292736 | SYSTEM AND METHOD FOR REUTILIZING CO2 FROM COMBUSTED CARBONACEOUS MATERIAL - A system for generating steam supplies of coal another material to one or more processing chambers. Each processing chamber includes a plasma arc torch that heats the material in the presence of water and a treatment gas at an extremely high temperature. A product gas stream is delivered from each processing chamber to a heat recovery steam generator (HRSG). Each HRSG generates steam that is used to drive a steam turbine. The processing chambers and HRSGs are fluidly connected so that the product gas streams moves from a processing chamber, to a HRSG, to another processing chamber, and then to another HRSG, etc. Within any of the HRSGs, or after the final HRSG, water in the product gas may condense to liquid water that may be redirected to any of the processing chambers. In addition, CO | 10-15-2015 |
20150321143 | TREATMENT OF INCINERATOR OFF GAS - A system treats off gas from a waste incinerator to decrease potentially negative aspects of the off gas to the environment. The system includes a waste incinerator and a plasma oxidizer. The waste incinerator includes an incineration chamber to contain a waste material during at least a portion of an incineration process of the waste material. The waste incinerator also includes an exhaust outlet to exhaust an off gas from the incineration process of the waste material. The plasma oxidizer is coupled to the waste incinerator to receive and oxidize the off gas from the exhaust outlet of the waste incinerator. The plasma oxidizer includes a non-thermal gliding electric arc oxidation system to generate the plasma. | 11-12-2015 |
20150323178 | ARRANGEMENT AND METHOD IN ELECTRIC FILTER - An arrangement and method in connection with an electric filter of a boiler plant, the electric filter comprising an insulator chamber. The arrangement comprises a first scavenging duct for conveying warm scavenging gas to the insulator chamber. Said first scavenging duct is connected to a channel conveying process gas in the boiler plant, which means that it is possible to supply process gas to the insulator chamber. | 11-12-2015 |
20150362184 | System and Process for Combusting Coal and Beneficiated Organic-Carbon-Containing Feedstock - A coal combustion process is described using coal and processed biomass to reduce adverse by-products in a coal combusting apparatus including the reduction of carbon dioxide by at least 50 volume %. The coal feedstock is selected from coal, a coal substitute processed biomass, or an aggregate blend of coal and processed biomass. The biomass feedstock comprises processed biomass pellets. The total energy density is predetermined and can be similar to the coal component or higher than the coal component. The intracellular salt in the processed biomass is at least 60 wt % less for the processed organic-carbon-containing feedstock used to make the processed biomass pellets than that of the starting un-processed processed organic-carbon-containing feedstock. | 12-17-2015 |
20150362185 | System and Process for Combusting Cleaned Coal and Beneficiated Organic-Carbon-Containng Feedstock - A coal combustion process is described using cleaned coal and processed biomass to reduce adverse by-products in a coal combusting apparatus including the reduction of carbon dioxide by at least 50 volume %. The coal feedstock comprises an aggregate blend of cleaned coal and processed biomass. The biomass feedstock comprises processed biomass pellets. The total energy density is predetermined and can be similar to the coal component or higher than the coal component. The intracellular salt in the processed biomass is at least 60 wt % less for the processed organic-carbon-containing feedstock used to make the processed biomass pellets than that of the starting un-processed processed organic-carbon-containing feedstock. The cleaned coal has a sulfur content that is 50 wt % less than that of un-cleaned coal before it passed through the coal-cleaning sub-system. | 12-17-2015 |
20150362187 | GAS PROCESSING UNIT AND METHOD OF OPERATING THE SAME | 12-17-2015 |
20160003473 | BOILER AND A METHOD FOR NOx EMISSION CONTROL FROM A BOILER - A boiler includes an enclosure having at least a supply for fuel and oxidizer and at least a supply for a SNCR reagent. The supply for the SNCR reagent includes at least a regulation valve for the SNCR reagent. The boiler includes at least a sensor for measuring information indicative of the NO | 01-07-2016 |
20160003474 | Power Plant - A process and a power plant comprising a combustor with a flue gas outlet and one or more water selective separators downstream the flue gas outlet to separate water from the flue gas. Optionally, a water return line returns separated water from the water selective separator to a water inlet of a CO shift cell with an outlet feeding H | 01-07-2016 |
20160025337 | SORBENTS FOR COAL COMBUSTION - Sorbent compositions containing iodine are added to coal to mitigate the release of mercury and/or other harmful elements into the environment during combustion of coal containing natural levels of mercury. | 01-28-2016 |
20160040887 | HYBRID WOOD BURNING FIREPLACE ASSEMBLY - A hybrid wood-burning fireplace assembly configured for burning wood-based fuel, wherein the burning generates combustion exhaust. The assembly comprising a fire box having an interior area, a baffle in the interior area defining lower and upper combustion chambers relative to the baffle. The upper combustion chamber has an upper exhaust passageway between baffle and the top portion of the firebox. A secondary combustion airway has air outlets in the firebox that direct the secondary combustion air adjacent to the baffle to mix with the exhaust for non-catalytic secondary combustion of the exhaust before the exhaust flows through the upper exhaust passageway. A catalytic combustion unit is positioned above the baffle and across the upper exhaust passageway, whereby the exhaust will pass through the catalytic combustion unit after the non-catalytic secondary combustion of the exhaust and before the exhaust exits the upper combustion chamber through the upper exhaust passageway. | 02-11-2016 |
20160076774 | Side-Feed Forced-Air Biomass Burning Cookstove - Disclosed herein are systems and devices that aid in reducing particulate emissions from biomass stoves, for example by the use of gases injected in or near the oxidation zone of a combustion chamber. Also disclosed are systems and devices providing electricity to a pump or blower that aids in injecting the gas and/or collecting exhaust gases. In some embodiments the device providing electricity is a thermoelectric generator that may also be used to power other devices. In many embodiments, the systems and devices inject a gas at or near the oxidation zone in the combustion chamber of a biomass stove. The gas injected into the zone may be fresh air, exhaust from combustion or combinations thereof. The gas can be forced into the to combustion chamber with the aid of a pump or blower that may also aid in drawing in exhaust gas. | 03-17-2016 |
20160102859 | METHOD FOR THE TREATMENT OF GAS - A method for the treatment of gas generated by the combustion of fossil fuel in a first combustion chamber, the method comprising the steps of transferring the gas to a second combustion chamber, combusting the gas in the second furnace in the presence of oxygen and a fuel source to generate waste gas and treating the waste gas to produce a concentrated carbon dioxide stream. | 04-14-2016 |
20160158701 | CONTROLLING AQCS PARAMETERS IN A COMBUSTION PROCESS - The present invention relates generally to the generation of steam via the use of a combustion process to produce heat and, in one embodiment, to a device, system and/or method that enables one to control one or more process parameters of a combustion process so as to yield at least one desirable change in at least one downstream parameter. In one embodiment, the present invention relates to measuring or determining at least one process parameter of a combustion system and using the information obtained from same to control at least one component of the combustion system. | 06-09-2016 |
20160166977 | GAS-ASSISTED STRIPPING OF LIQUID SOLVENTS FOR CARBON CAPTURE | 06-16-2016 |
20160195264 | PROCESS UTILIZING SYNERGISTIC MIXTURE OF FUELS TO PRODUCE ENERGY AND REDUCE EMISSIONS IN BOILERS | 07-07-2016 |
20160195270 | ARRANGEMENT OF A CARBON DIOXIDE GENERATION PLANT, A CAPTURE PLANT AND AN CARBON DIOXIDE UTILIZATION PLANT AND METHOD FOR ITS OPERATION | 07-07-2016 |
20160201903 | METHOD OF AND APPARATUS FOR COMBUSTING SULFUROUS FUEL IN A CIRCULATING FLUIDIZED BED BOILER | 07-14-2016 |
20160250588 | AIR POLLUTION CONTROL SYSTEM, AIR POLLUTION CONTROL METHOD, SPRAY DRYING DEVICE OF DEWATERING FILTRATION FLUID FROM DESULFURIZATION DISCHARGED WATER, AND METHOD THEREOF | 09-01-2016 |