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| Number | Title | Issue Date |
| 7963236 | Boiler and method for controlling air and fuel ratio using air pressure sensor Disclosed is an air-fuel ratio control boiler using a air pressure sensor and method for controlling the air-fuel ratio thereof. The boiler is comprised of a fan, the air pressure sensor, a air pressure sensor voltage measurement unit, a air pressure sensor voltage ... | 06/21/2011 |
| 7661376 | System for producing energy at a pulp mill A spent liquor recovery boiler system including a boiler having a water/steam circulation system with superheaters and a furnace for recovering energy and chemicals from spent liquor combusted therein, the walls of the boiler are formed of a plurality of water-coole... | 02/16/2010 |
| 7438005 | Low NOx combustion Combustion of hydrocarbon liquids and solids is achieved with less formation of NOx by feeding a small amount of oxygen into the fuel stream. ... | 10/21/2008 |
| 7383779 | Recycling system and method A system and method of recycling non-hazardous waste materials is provided, wherein the method first comprises reducing the size of said non-hazardous waste materials. The method further includes incinerating the non-hazardous waste material within an incineration u... | 06/10/2008 |
| 7350471 | Combustion system with recirculation of flue gas An improved combustion method and corresponding apparatus is disclosed, where the method includes oxidizing a fuel in a combustion chamber with an oxidizing stream including an air stream and a first recycled flue gas stream and mixing a produced hot flue gas stream... | 04/01/2008 |
| 7335014 | Combustion NOx reduction method A method of extending the droplet half-life of water droplets in a combustion furnace by increasing the relative humidity in the droplets' environment; thereby reducing the evaporation rate of the water from the droplet and increasing the half-life of the droplets i... | 02/26/2008 |
| 7331313 | Continuous steam generator with circulating atmospheric fluidised-bed combustion A continuous steam generator with a circulating atmospheric fludized-bed chamber is defined by encircling walls essentially on all sides, comprised of gas-permeable tubular walls provided with essentially vertical tubes, and comprises at least one funnel in its lowe... | 02/19/2008 |
| 7331299 | Incombustible withdrawing system An incombustible withdrawing system withdraws an incombustible from a fluidized-bed furnace having a fluidized bed formed therein by a fluidized medium. The incombustible withdrawing system has a mixture delivery path to deliver a mixture of the fluidized medium and... | 02/19/2008 |
| 7320288 | Steam-generating combustion system and method for emission control using oxygen enhancement A steam-generating combustion system includes an oxygen enriched gas provided as at least part of an oxidant stream. A combustion chamber receives and combusts a fuel in the oxidant stream and generate steam. The combustion chamber generates flue gas having a flue g... | 01/22/2008 |
| 7316365 | Method of integrated processing of waste materials Taught herein are methods of integrated material processing, especially integrated processing of waste materials. According to the methods, waste materials are exposed simultaneously to two or more unit operations, and the physical phenomena associated with each of ... | 01/08/2008 |
| 7281478 | Assembled cathode and plasma igniter with such cathode This invention relates to a plasma igniter for directly igniting the pulverized coal burner. Said plasma igniter consists of a plasma generator which includes a composite anode, an combined type cathode, an electromagnetic coil and a transmitting coil; a pulverized ... | 10/16/2007 |
| 7263934 | Methods for generating energy using agricultural biofuel A process comprising, providing an agricultural biofuel to a fluidized bed reactor and combusting the agricultural biofuel to produce heat and/or steam is disclosed. In one embodiment, the agricultural biofuel is selected from the group consisting of agricultural cr... | 09/04/2007 |
| 7225746 | Low NOx combustion Combustion of hydrocarbon liquids and solids is achieved with less formation of NOx by feeding a small amount of oxygen into the fuel stream. ... | 06/05/2007 |
| 7219610 | Grate plate arrangement for step plates A grate plate arrangement for step grates includes box-like grate plates (4) positioned on a grate carrier (2) with a front plate (24) placed on its end wall (18) and fastened to the end wall (18) using one or more studs (26... | 05/22/2007 |
| 7207280 | Combustion air system for recovery boilers, burning spent liquors from pulping processes An arrangement is disclosed for supplying an air jet form to the furnace of a recovery boiler, where the furnace has a front wall, a rear wall and side walls. Black liquor spraying devices are disposed on the furnace walls at one or several levels of the furnace. A ... | 04/24/2007 |
| 7185594 | Method and apparatus for improving combustion in recovery boilers A combustion air system for a recovery boiler is described in which multiple levels of secondary and tertiary combustion air ports each have an even number of ports, with the ports on opposing walls interlaced. The air system lends itself equally well to front/rear ... | 03/06/2007 |
| 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 |
| 7069866 | System for controlling the flow pattern of a recovery boiler The invention relates to a system for controlling the flow field in a soda recovery boiler, said soda recovery boiler comprising at least a furnace (1), primary air ports (4) in the lower part of the furnace, so-called secondary combustion air ports ( | 07/04/2006 |
| 7069867 | Process for burning sulfur-containing fuels A process for burning a sulfur-containing fuel to produce a flue gas. The process includes introducing a sulfur-containing fuel into a combustion chamber, introducing an oxidant stream into the combustion chamber and mixing it with the sulfur-containing fuel to defi... | 07/04/2006 |
| 7040240 | Ash fusing system, method of operating the system, and gasification fusing system for waste An ash melting system of the present invention includes a slagging combustion furnace (10) for melting ash into molten slag; and a slag separating apparatus (50) for bringing the molten slag (121) discharged from the slagging combustion furnace ... | 05/09/2006 |
| 7017501 | Riffle distributor assembly for a fossil fuel fired combustion arrangement A riffle distributor assembly for influencing the travel properties of a material feed stream 42 moving between a pulverizer 14 and a furnace 12 is part of a feed path 36 having one duct 44A having a branch entry 66A and ano... | 03/28/2006 |
| 7014458 | High velocity injection of enriched oxygen gas having low amount of oxygen enrichment Methods and apparatus for combustion of a hydrocarbon fuel in a combustion chamber of a furnace or boiler are presented, the combustion normally using only air as an oxidant, part of the air entering the combustion chamber through one or more burners, and a remainin... | 03/21/2006 |
| 7007616 | Oxygen-based biomass combustion system and method An oxygen-based biomass solid fuel combustion system and method has an air separator for separating oxygen from air providing a supply of oxygen for feeding oxygen to a solid fuel combustion chamber. An airlock feeds a metered amount of solid fuel to the solid fuel ... | 03/07/2006 |
| 6988453 | Outlets for a pyrolytic waste treatment system The inventive subject matter is directed toward a pyrolytic waste treatment system comprising an outlet adapted to channel a composition out of a pyrolysis chamber. A mechanism is used for cleaning the outlet during operation of the pyrolytic system. ... | 01/24/2006 |
| 6966268 | Centrifugal combustion method using air-flow in a furnace This invention, Centrifugal and Divided Space combustion method, need to install a cylindrical fuel pot, the first combustion chamber, the second combustion chamber and an exhaust pot. It also needs to install the upper and the lower pots outside the first combustio... | 11/22/2005 |
| 6952997 | Incineration process using high oxygen concentrations A process for incinerating combustible materials including the steps of: delivering combustible material and inlet gases to a primary combustion chamber, the inlet gases having an oxygen content of at least 50 vol %; burning the combustible material with the oxygen ... | 10/11/2005 |
| 6945181 | Method for combusting an organic waste concentrate containing alkali metal compounds under oxidative conditions The invention relates to a method for combusting an organic waste concentrate, which contains alkali metal compounds, under oxidative conditions for recovering the alkali metal compounds as alkali metal carbonates. According to the invention, the combustion i... | 09/20/2005 |
| 6938561 | Device for producing a rotating flow A device for producing a rotating flow in a rectangular flow duct which has a flue-gas outlet of an incineration plant, in particular of a garbage incineration plant, and a transition region from a combustion chamber of the incineration plant to the flue-gas outlet.... | 09/06/2005 |
| 6935251 | Steam-generating combustion system and method for emission control using oxygen enhancement A steam-generating combustion system includes an oxygen enriched gas provided as at least part of an oxidant stream. A combustion chamber receives and combusts a fuel in the oxidant stream and generate steam. The combustion chamber generates flue gas having a flue g... | 08/30/2005 |
| 6928937 | Sootblowing control based on boiler thermal efficiency optimization The present invention provides a process for the control of a cleaning system for a boiler which incorporates factors related to the overall operation and efficiency of the boiler. Current values of plant data parameters associated with the boiler furnace are compar... | 08/16/2005 |
| 6923129 | Method and treatment of sludge having particles comprising metal, metal oxide or metal hydroxide intermixed therein A method for treatment of sludge is disclosed, wherein the sludge has a liquid part and metal-containing particles intermixed therein. The particles comprise metal, metal oxide or metal hydroxide and the method comprises the following steps: atomising the sludge; su... | 08/02/2005 |
| 6915751 | Method and apparatus for processing a pulverulent or particulate material In a fluid bed apparatus in which a layer of pulverulent or particulate material is fluidized by means of fluidizing gas which is introduced through openings in a bed plate in a first plurality of streams of flows of gas, means are provided for introducing a second ... | 07/12/2005 |
| 6910432 | Selective oxygen enrichment in slagging cyclone combustors A method for combusting a fuel in a cyclone combustor having a burner and a barrel includes: feeding a stream of the fuel into the barrel at the burner end of the barrel; feeding a stream(s) of a first oxidant (e.g., air) having a first oxygen concentration into the... | 06/28/2005 |
| 6883443 | Method for reduction of slagging and fouling of the waterwalls and of the firebox and superheater and reheater of steam boilers with coal combustion The present invention is a method for reducing the slagging and fouling of the surfaces of the waterwalls, firebox, superheater, and reheater of the furnace of a coal-fired steam boiler. The process reduces the firebox exit temperature to below the specific ash melt... | 04/26/2005 |
| 6832566 | Process to improve the performance of the exothermic incineration of waste material The starting point is a process to improve the performance of the incineration of combustible waste material in an incineration chamber, whereby the waste material is conveyed to a burner flame where it is burned with combustion air at a temperature in the range fro... | 12/21/2004 |
| 6807915 | Method of carbonization of organic waste and apparatus therefor The method of carbonization of organic waste according to the present invention comprises the steps of supplying organic waste to a dryer, reducing an amount of water in the organic waste by heating with high-temperature gas, supplying the organic waste to a carboni... | 10/26/2004 |
| 6792881 | Method for cleaning salt impregnated hog fuel and other bio-mass, and for recovery of waste energy A method according to the present invention for reducing the creation of dioxins during the burning of a biomass containing a contaminant, wherein the contaminant is solvated or neutralized in the presence of a corresponding solvent, includes the steps of prior to t... | 09/21/2004 |
| 6789488 | Adjustable flow control elements for balancing pulverized coal flow at coal pipe splitter junctions An adjustable device installed at the inlet of conventional junctions/splitters (116) for on-line control of the distribution of coal among the outlet pipes is herein disclosed. The device includes a plurality of flow control elements (60) each positio... | 09/14/2004 |
| 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 |
| 6742463 | Combustion air system for recovery boilers, burning spent liquors from pulping processes An arrangement is disclosed for supplying an air jet form to the furnace of a recovery boiler, where the furnace has a front wall, a rear wall and side walls. Black liquor spraying devices are disposed on the furnace walls at one or several levels of the furnace. A ... | 06/01/2004 |
