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...Daniel Webster invented a "bull plow" to pull out tree stumps. It didn't catch on because it was huge and required four oxen to pull it!
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| Number | Title | Issue Date |
| 8047145 | Ammonia vaporization system using non-flue gas intermediate heat transfer medium Methods and apparatus for generating a vapor to be injected into a flue gas stream are described. The apparatus includes a fluid vaporization and injection assembly including an input for receiving a non-flue gas, e.g., clean, fluid heat transfer medium, e.g., air; ... | 11/01/2011 |
| 7886675 | Fuel ignition systems Disclosed is a furnace adapted for burning solid materials, including biomass fuels. The furnace comprises an igniter having a heating element carried by a ceramic core and disposed within a ceramic cover tube for directing air at fuel disposed within the furnace fo... | 02/15/2011 |
| 7032526 | Method for combustion treatment of combustible waste and apparatus therefor The present invention can provide a method for combustion treatment capable of efficiently treating combustible waste, and a combustion treatment apparatus capable of realizing such a method. The present invention can further provide a method for combustion treatmen... | 04/25/2006 |
| 6976439 | Incinerator An incinerator (10) comprising a combustion chamber (11) and a plurality of combustion-promoting fluid blast pipes (19) disposed so as to project from one location on the inner wall (12) of the combustion chamber, extend in that vertical ... | 12/20/2005 |
| 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 |
| 6675880 | Air heater for recovering a heat of exhaust gas A high temperature air heater including a heat transfer conduit located in higher temperature gas. The heat transfer conduit is made up of a heat transfer pipe through which the air to be heated flows and a refractory protective pipe covering the heat tra... | 01/13/2004 |
| 6588349 | System for the drying of damp biomass based fuel System for drying a damp biofuel, includes a boiler (1) for combustion of the fuel. Further, the system includes a first heat drying chamber (2), a drying gas flow (3) heated by the thermal energy of the combustion gases from the boiler and/or by steam, t... | 07/08/2003 |
| 6363868 | Combustors and burners with high turndown ratio Various smoke and combustible gas combustors (200, 300) are disclosed, and also disclosed are systems (100, 200) combining gas combustor with inventive burner. Such a burner (100 or 100') provides combustion of a particulate fuel such as sawdust, and many... | 04/02/2002 |
| 6332411 | Furnace The furnace is intended for burning solid fuel (mainly fire-wood) in continuous mode of operation, with significant amount of heat released in the form of hot combustion products usable in wood-drying installations, for house heating, destroying of refuse... | 12/25/2001 |
| 6325003 | Low nitrogen oxides emissions from carbonaceous fuel combustion using three stages of oxidation A method for reducing NOx emissions from the combustion of carbonaceous fuels using two sequential stages of partial oxidation followed by a final oxidation stage. In the first stage, substoichiometric air condition of about 0.55 to 0.75 is use... | 12/04/2001 |
| 6325002 | Low nitrogen oxides emissions using three stages of fuel oxidation and in-situ furnace flue gas recirculation A method for reducing NOx emissions from the combustion of carbonaceous fuels using three stages of oxidation and second stage in-situ furnace flue gas recirculation. In the first stage, a partial oxidation combustor is used to partially combus... | 12/04/2001 |
| 6244200 | Low NOx pulverized solid fuel combustion process and apparatus A method and apparatus for low-NOx combustion of a pulverized solid fuel in which combustion products from a partial oxidation combustor are mixed with a pulverized solid fuel, thereby preheating the pulverized solid fuel and resulting in devol... | 06/12/2001 |
| 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 |
| 6199494 | Method of improving the performance of a cyclone furnace for difficult to burn materials, and improved cyclone furnace thereof The firing performance of a radial, scroll, or vortex cyclone furnace can be improved when firing difficult to burn materials having a relatively low heating value or a relatively high moisture content, such as sub-bituminous and lignite coals. This can b... | 03/13/2001 |
| 5924368 | Waste treatment furnace A waste treatment furnace includes a first waste treatment chamber with a first burner chamber communicating therewith, and a second waste treatment chamber with a second burner chamber communicating therewith. A common bottom wall is positioned under the... | 07/20/1999 |
| 5678494 | Biomass-fueled furnace A biomass-fueled furnace for residential or institutional space and hot water heating. Wood chips, the preferred fuel, are purchased "green and/or wet" and are stored in a dryer/storage assembly which uses waste clean exhaust gases produced by the furnace... | 10/21/1997 |
| 5673634 | Incineration plant with heat exchanger An incineration plant includes a heat exchanger arranged in a flue gas flow following a reduction stage for nitrogen oxides and in front of a flue gas dust collector, and a heat transfer medium circuit for absorbing heat from the heat exchanger in the flu... | 10/07/1997 |
| 5323718 | Overfire air system for incinerating In an incinerator having a housing structure defining a combustion chamber provided with a pair of side walls, a stoker disposed in the combustion chamber between the side walls and an underfire air system, an overfire air system generally consisting of a... | 06/28/1994 |
| 5322116 | Very high temperature heat exchanger A high temperature fluid-to-fluid heat exchanger is described wherein heat is transferred from a higher temperature fluid flow core region to a lower temperature fluid flow annulus. The wall separating the high and low temperature fluid flow regions is co... | 06/21/1994 |
| 5322026 | Waste combustion chamber with tertiary burning zone This invention relates to a combustion chamber and a method for burning waste material, such as waste oil, hazardous chemicals, and municipal garbage or trash, in a manner which generates very little smoke, particulate matter, unburned hydrocarbons, or po... | 06/21/1994 |
| 5309851 | Regenerative thermal oxidizer with gate manifold pressurization The present invention involves a regenerative thermal oxidation apparatus for purifying gases by thermal oxidation and for exchange of heat between inleting and outleting gases. The apparatus has a plurality of thermal chamber units, each such unit having... | 05/10/1994 |
| 5293827 | Regenerative thermal oxidizer with gate manifolds including purges The present invention is directed to an improved regenerative thermal oxidizer and a method of purifying gases by raising gases to their auto ignition temperature and by exchanging heat by inleting and outleting gases. The reactor has at least three regen... | 03/15/1994 |
| 5154599 | Method for apparatus for combusting fuel in a combustion chamber To avoid high NOx emissions, the fuel is oxidized with an extremely high exhaust gas recirculation ration substantially without flames and without pulsations.... | 10/13/1992 |
| 5137009 | Combustion device for wood and coal The invention relates to a combustion device for wood or coal comprising a front wall with a fuel charging opening, two side walls, a rear wall, a bottom wall, a top wall, a door for the fuel charging opening, a control element for controlling a fresh-air... | 08/11/1992 |
| 5054405 | High temperature turbulent gasification unit and method Waste materials are efficiently and completely incinerated in a gasification unit with a minimum amount of fly ash while ensuring complete sterilization of residual materials. The gasification unit includes a refractory liner which is stepped to define pr... | 10/08/1991 |
| 4984524 | Technique for controlling the combustion of fuel having fluctuating thermal values The combustion of fuel having a highly fluctuating thermal value is controlled to permit optimization of air supply and reduction of waste gas impurities. The fuel passes through a combustion chamber having a degassing and evaporation zone, a primary comb... | 01/15/1991 |
| 4976207 | Process of improved postcombustion with rapid triggering and means for implementation in a heating and incineration device Apparatus for carrying out a postcombustion process includes a combustion chamber (2) and a post-combustion chamber (4) provided within the vicinity of the outlet of the combustion chamber (2). A conduit (8) is fluidically connected to the post-combustion... | 12/11/1990 |
| 4920898 | Gas turbine slagging combustion system There is provided a slagging combustion system for generating high purity working fluid suitable for driving gas turbines. The system consists of a precombustor for preheating oxidant tangentially fed to a primary slagging combustor where a solid carbonac... | 05/01/1990 |
| 4895082 | Technique for controlling the combustion of fuel having fluctuating thermal values The combustion of fuel having a highly fluctuating thermal value is controlled to permit optimization of air supply and reduction of waste gas impurities. The fuel passes through a combustion chamber having a degassing and evaporation zone, a primary comb... | 01/23/1990 |
| 4829914 | Combustion furnace with proportional underfire/overfire air intake control A solid fuel combustion chamber combusts the fuel utilizing underfire and overfire air. Both the underfire and overfire air derive from a common intake port, with a controllable vane determining the ratio between the two air sources. Gas flow from the sol... | 05/16/1989 |
| 4823710 | Non-peripheral blowing of oxygen-containing gas in steam generating boilers In a steam generating boiler having a bottom wall supporting a char bed and sidewalls with ports through which air is admitted for combustion of combustible species in the char bed and emanating therefrom, combustion is improved by introducing an oxygen-c... | 04/25/1989 |
| 4785747 | Gasifying burner for a solid fuel heating apparatus The present invention relates to a gasification burner for heating apparatus (boiler, hot air generator or the like) which uses solid fuel. The gasification burner is placed generally at the center of the hearth of the heating apparatus to achieve gasific... | 11/22/1988 |
| 4782765 | Pellet fuel burner A burner for burning, granular, pellet or similarly sized solid heating fuel includes a retort in which solid fuel is ignited and burned. A peripheral electrical igniter is included within the retort for initiating self-sustaining combustion of the solid ... | 11/08/1988 |
| 4744313 | Air supply apparatus for an incinerator A water-cooled air supply system for the combustion chamber of an incinerator. A longitudinal trough is formed in the lower end of the combustion chamber and a plurality of air supply tubes are spaced above the bottom of the trough. Elongated shrouds are ... | 05/17/1988 |
| 4651654 | Incinerator An incinerator for burning waste material includes an outer steel housing having a refractory liner that defines a combustion chamber. A series of channels are secured to the inner surface of the housing and provide vertical air flow passages. The lower e... | 03/24/1987 |
| 4635573 | Method for destroying refuse The invention relates to a method of destroying and vaporizing refuse, primarily household waste. The material is fed into a shaft furnace, in which the material is subjected to a vaporization and combustion process in at least three zones, said zones bei... | 01/13/1987 |
| 4628829 | Solid fuel combustion assembly There is disclosed an improved solid fuel combustion assembly including a combustion chamber having a high heat capacity liner and provided with primary and secondary combustion supporting fluid conduits to thereby achieve combustion temperatures in the c... | 12/16/1986 |
| 4628836 | Process for inhibiting corrosion and minimizing deposits in an air preheater system A process is disclosed for inhibiting corrosion of metal surfaces and deposition of particulates in an air preheater system. In the process, a composition (preferably aqueous) comprising a corrosion inhibiting amine and a surfactant having an HLB value of... | 12/16/1986 |
| 4580505 | Methods and apparatus of fluidized beds involving heat or combustion An improvement in method and apparatus of fluidized beds involving heat or combustion by pre-heating the exterior and interior of the fluidized bed in unison through the use of an exterior chamber surrounding the fluidized bed chamber. This exterior chamb... | 04/08/1986 |
| 4580530 | Method in the operation of a firing plant, and a firing plant for performing the method In a method in the operation of a firing plant of the type comprising a combustion furnace and heat exchanger means to transfer thermal energy from the flue gas of the furnace to its combustion air, wherein a vaporizable liquid, such as water, is added to... | 04/08/1986 |
