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| Number | Title | Issue Date |
| 7318381 | Methods and systems for determining and controlling the percent stoichiometric oxidant in an incinerator Methods and systems for measuring and controlling the percent stoichiometric oxidant in the pyrolyzing section of incinerators are provided. The methods and systems rely on measurements of the oxygen concentration and temperature of the gases within the pyrolysis se... | 01/15/2008 |
| 7196903 | Multiple source fan control with override An electronic system may comprise a variable speed fan, a first source coupled to the fan, and a second source coupled to the fan. Either of the first or second sources may control the speed of the fan. ... | 03/27/2007 |
| 7174283 | Method for isolating sources of drifts in output properties for machines and processes A method for determining a root cause for a drift in a process or a machine, the function of which is determined by a model describing a relationship between setup and/or input variables and output property or properties, comprising the steps of: (a) Assigning desir... | 02/06/2007 |
| 7107775 | Cold control damper assembly The invention consists of a unit 10 including a two-piece, snap together housing made of elements 40 and 50 which forms the orifice seat and the transitions which direct moisture away from the seat area and prevents the accumulation of moisture ... | 09/19/2006 |
| 7077069 | U-type slag-tap firing boiler and method of operating the boiler A boiler includes a coal pulverizer that pulverizes coal; a coal combustion unit that combusts gasified pulverized coal that has been pulverized by the coal pulverizer; a furnace that combusts gasified fuel generated by the coal combustion unit; a slag formation uni... | 07/18/2006 |
| 7004084 | Corn burner A corn-burning stove provides cooling for the corn in-feed auger and other adjacent components by combustion inlet air flow patterns. The inlet air flow transports pellet fuel through a distance within the fire pot which varies responsive to the flow rate of the inl... | 02/28/2006 |
| 6962117 | Method and apparatus for controlling combustion in a furnace A method and system for controlling the combustion in a furnace in which the flue gas generated by the burning in the combustion zone is fed back to the combustion zone through a recirculation path to cool the combustion zone so that the temperature is below the mel... | 11/08/2005 |
| 6959654 | Gasifier system and method A solid fuel fed combustor method having a first chamber portion with an inlet feeding a metered amount of a solid fuel to a first burner stage having a first traveling conveyor firebelt. A metered amount of air is introduced in progressively increasing proportions ... | 11/01/2005 |
| 6939125 | Method for reducing nitrogen oxides in combustion gas from combustion furnace A method for reducing NOx, in a combustion gas which is discharged from a combustion furnace for burning a fuel by means of a gas containing oxygen in an amount of at least 80 vol % and which contains oxygen, which method comprises adding a combustible ma... | 09/06/2005 |
| 6857379 | Method and device for incinerating organic waste material According to a conventional method for incinerating organic waste material, a fluidization device causes an oxygenous fluidizing gas to flow through the waste material, which is located in an incineration chamber, from underneath while forming a fluidized particle l... | 02/22/2005 |
| 6843185 | Burner with oxygen and fuel mixing apparatus An oxygen-fuel combustion system combines oxygen and fuel to produce a flame. The system distributes oxygen to a stream of fluidized, pulverized, solid fuel at various sites before and after ignition. The system is operable to vary the concentration of oxygen in an ... | 01/18/2005 |
| 6799526 | Methods of improving productivity of black liquor recovery boilers Methods of increasing the throughput of recovery boilers equipped with at least three levels of injection of air with oxygen enrichment of the air in at least one air level. In one method, a black liquor recovery boiler has three levels of air injection, and oxygen ... | 10/05/2004 |
| 6752093 | Method for operating a refuse incineration plant A method for operating a refuse incineration plant and to a regulating system, in which, after the fire has been fanned, the generation of heat is made more uniform by regulating at least one of the following operating parameters: refuse metering; residence time on ... | 06/22/2004 |
| 6745708 | Method and apparatus for improving the efficiency of a combustion device A method and/or apparatus for efficiently operating a combustion device including at least one control zone, with each control zone including at least one burner assembly, is disclosed and includes a) individually supplying fuel to each of the burner assemblies in e... | 06/08/2004 |
| 6712012 | Control system for an incineration plant, such as for instance a refuse incineration plant A control system for an incineration plant, comprising an incineration furnace with a combustion path along which the material to be burned is transported, air supply means, a steam generator, and control means with a steam controller and an oxygen controller which,... | 03/30/2004 |
| 6644222 | System for continuous thermal combustion of matter, such as waste The system for continuous thermal combustion of matter, such as waste, comprises an incinerator, air supply means for supplying heated air to the incinerator, and a steam generator for generating steam on the basis of heat generated in the incinerator. Th... | 11/11/2003 |
| 6622645 | Combustion optimization with inferential sensor A method and system for combustion of fuel in a boiler in which flue gasses are produced. The boiler includes a source of fuel, a source of air, and a controller for controlling the ratio of the source of air and the source of fuel inputted into the boile... | 09/23/2003 |
| 6532879 | Gasifier system and method A solid fuel fed combustor system having a first chamber portion with an inlet feed for feeding a metered amount of a solid fuel thereto, a first burner stage having a first traveling conveyor firebelt, a metered amount of air introduced in progressively ... | 03/18/2003 |
| 6418866 | Operating method of fluidized-bed incinerator and the incinerator The objective of the present invention is to provide a fluidized bed incinerator which will increase the thermal capacity of the freeboard to respond to fluctuations of the load imposed by waste matter such as sludge or garbage with a high moisture conten... | 07/16/2002 |
| 6401633 | Closed cycle waste combustion An apparatus for treating organic waste material characterized by high ash content is disclosed. The apparatus includes a slagging combustor for burning the organic waste material to produce a slag of molten inorganic ash and exhaust gases, a cooler for r... | 06/11/2002 |
| 6389995 | Method of combustion and a combustion plant in which absorbent is regenerated A method of combustion and a combustion plant in which absorbent is regenerated is described herein. During the combustion of a fuel in a combustion chamber enclosing a fluidized bed, a fuel and an absorbent are supplied to the fluidized bed. The combusti... | 05/21/2002 |
| 6382110 | Cremation method A method and installation for the cremation of bodies in coffins. The coffin is placed in a crematorium furnace in the wall of which at least one burner is disposed. Conbustion occurs in a chamber of the crematorium furnace without naturally-occurring air... | 05/07/2002 |
| 6383297 | Method and device for joint oxydation and heat treatment of workpieces Disclosed is a method for joint oxydation and heat treatment of workpieces at temperatures ࣘ1300° in the treatment chamber of an oven containing a neutral or reactive gas in a temperature range above 570°. In order for the process to be reproducible a... | 05/07/2002 |
| 6336449 | Solid fuel burner for a heating apparatus A burner system is described for burning granular pellets and similarly sized solid biomass heating fuel, e.g. wood pellets. It includes an air tight fire chamber having an exhaust outlet in an upper region thereof and a burner (10) in the bottom thereof ... | 01/08/2002 |
| 6237511 | Method and device for burning disintegrated plant-based fuel A method of burning plant-based fuel is involved in which the plant-based fuel is burned in a boiler designed for burning dry fuel and with the plant-based fuel being used having a moisture value which can vary in range from dry to wet. The method involve... | 05/29/2001 |
| 6189461 | Burning apparatus and method for restricting the occurrence of dioxins An incineration apparatus which can suppress the generation of dioxins, including a combustion furnace (11) for burning a combustible in combustion air within the furnace, chlorinated aromatic compound measuring device (12) for measuring an amount of a ch... | 02/20/2001 |
| 6190160 | Process for combustion of a fuel with an oxygen-rich oxidant The invention relates to a process for combustion of a fuel with an oxygen-rich oxidant, in a combustion chamber (3), in which, cyclically: at least one principal variable representing the combustion in the said combustion chamber (3) is measured, and, as... | 02/20/2001 |
| 6155183 | Method and apparatus for reducing NOx emissions from a multiple-intertube pulverized-coal burner A method and apparatus retrofitted to a multiple-intertube pulverized-coal burner to reduce NOx emissions of roof fired boilers. An internal two stage process controls the amount of secondary air which flows to the burner. The first stage inclu... | 12/05/2000 |
| 5988079 | Unburned carbon and other combustibles monitor An unburned carbon and other combustibles monitoring and control system for a fly ash producing fossil-fueled boiler, such as a pulverized coal fired boiler. An infrared imaging camera counts the moving hot particles entrained in the hot gases downstream ... | 11/23/1999 |
| 5957063 | Combustion system and operation control method thereof A combustion system is divided into a thermal decomposition section and a combustion section. The thermal decomposition section thermally decomposes or partially bums solid combustibles, thereby generating combustible gases. The quantity or quality of the... | 09/28/1999 |
| 5957064 | Method and apparatus for operating a multiple hearth furnace A multiple hearth furnace having a drying zone, a combustion zone and a cooling zone includes a recirculation loop that recycles exhaust gas from the drying zone to the cooling zone. In some embodiments, a first control loop including a temperature measur... | 09/28/1999 |
| 5899150 | Grate element and grate with fluid cooling The grate element (1, 2) is made in three pieces in the sample embodiment, and consists of a central main part (10) and two side parts (11, 12) attached thereto. The main part (10) is pierced by parallel straight-line bores, which form the straight-line c... | 05/04/1999 |
| 5894806 | Process for increasing the effectiveness of slag and/or corrosion control chemicals for combustion units Reduction of slagging is improved by targeting slag-reducing chemicals in a furnace with the aid of computational fluid dynamic modeling. Chemical utilization and boiler maintenance are improved.... | 04/20/1999 |
| 5832842 | System for the automatic admission and regulation of the flow-rate of a basic substance admitted to refuse incineration plants for the hot destruction of the acids in the combustion fumes A system for automatically admitting and regulating the flow-rate of an alkaline substance admitted to the combustion chamber (10) of a refuse incineration plant for the hot destruction of the acids contained in the combustion fumes, comprising sensors (2... | 11/10/1998 |
| 5794549 | Combustion optimization system Information relating to combustion conditions within a fossil-fueled boiler that includes a plurality of burners adapted to produce flames combining to form a fireball is provided by acquiring data relating to the physical and temperature characteristics ... | 08/18/1998 |
| 5680824 | Process for burning solids with a sliding firebar system A process for burning solids on a sliding fire grate system where each of the combustion control criteria are measured and controlled individually for each grate plate comprising the grate system.... | 10/28/1997 |
| 5664505 | Method of and apparatus for abnormality detection of a fluidized bed boiler A method of and apparatus for detecting an abnormality of a fluidized bed boiler is characterized in that an abnormality of the fluidized bed boiler is detected on the basis of a physical quantity related to a condition change of a gas existing in a space... | 09/09/1997 |
| 5628261 | Method and furnace for decomposing solid waste materials A high temperature furnace and method for thermally decomposing solid combustible fuels into usable products to provide a source of heat to a selected area is disclosed. Solid combustible fuel, such as waste automobile tires, are introduced into a reactio... | 05/13/1997 |
| 5626085 | Control of staged combustion, low NOx firing systems with single or multiple levels of overfire air A control system for a fuel-fired furnace and more specifically the control of the stoichiometric ratio of the combustion process occurring within the furnace of a steam generating power plant. The control system, when so employed, is capable of regulatin... | 05/06/1997 |
| 5520123 | Intelligent afterburner injection control to minimize pollutant emissions An intelligent oxygen injection control system for afterburners which minimizes transient incinerator pollutant emissions while simultaneously minimizing oxygen consumption. A fuzzy logic-based controller utilizes inputs from sensors that measure gas phas... | 05/28/1996 |
