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| Number | Title | Issue Date |
| 6918827 | Universal chimney cap A chimney cap and a method for making the same are described. The chimney cap is more consistently and uniformly manufactured, which permits nesting. This is accomplished by forming the cap from single piece of expanded metal to create a substantially square or rect... | 07/19/2005 |
| 6085673 | Method for reducing waterwall corrosion in low NOx boilers A method to reduce waterwall corrosion in a low NOx boiler includes the steps of locating a waterwall area of a low NOx boiler where oxidizing conditions exist and deposition of FeS is likely. The combustion air input at the waterwal... | 07/11/2000 |
| 5558079 | Trash incinerator An inexpensive trash incinerator having a primary burn chamber and an after burner which includes a spark arrestor. The after burner is a stack which rests on top of the primary burn chamber and it includes an opening in its lower end for admitting fresh ... | 09/24/1996 |
| 5156659 | Cooler and particulate separator for an off-gas stack An off-gas stack for a melter comprising an air conduit leading to two sets of holes, one set injecting air into the off-gas stack near the melter plenum and the second set injecting air downstream of the first set. The first set injects air at a compound... | 10/20/1992 |
| 4739712 | Air curtain apparatus for pit burning Apparatus for supplying an air curtain into a pit to facilitate combustion of material disposed within the pit includes an air supply tube mounted on wheels and having an inlet end and an outlet end, a nozzle structure disjointably mounted on the air supp... | 04/26/1988 |
| 4635569 | Incinerator system arrangement with dual scrubbing chambers An incinerator arrangement particularly for a multi-floor building includes a main housing located at the lowest level in the building, and a chute-flue which rises from the main housing to the roof of the building. Waste is burned in a main combustion ch... | 01/13/1987 |
| 4619011 | Mechanical chimney sweep A mechanical chimney sweep including a spark arrester; a winch-pulley-cable assembly; a brush attached to the cable; and a counterweight depending from the brush. The spark arrester, which prevents lit material from exiting the flue, is attachable to a fl... | 10/28/1986 |
| 4543754 | Clip-on chimney hood A clip-on chimney hood comprising a substantially circular, oval, or inverted U-shaped spring integrally attached to a hood. A preferred material for the spring is a utility cable which can be formed into a loop by slipping each of the loop ends, of a len... | 10/01/1985 |
| 4394143 | Protective spark eliminating system for a filter baghouse A protective spark eliminating system for removing burning particulates from flue gases prior to introducing the gases into a filter baghouse. The protective system includes a housing enclosing a separating chamber having a gas inlet in the side of the ho... | 07/19/1983 |
| 4386571 | Adjustable spark arrester for fireplace flue An adjustable spark arrester for a chimney flue is provided wherein the arrester hood is held by adjustable means permitting the arrester to be installed without the use of tools.... | 06/07/1983 |
| 4375783 | Chimney top spark arrester A spark arrester characterized by a fixed base assembly attached over the top of a chimney, a pivot assembly attached to the fixed base assembly, and a rotatable assembly rotatably coupled to the pivot assembly. The rotatable assembly is substantially cyl... | 03/08/1983 |
| 4307673 | Spark arresting module A spark-arresting module for disposition in a duct for hot stack gases comprising a rigid frame structured with spaced, parallel bars alternating with spaced, parallel slots, a shaft at the upstream side of the frame and parallel thereto, a plurality of b... | 12/29/1981 |
| 4279629 | Fire prevention filter for chimneys and the like This invention is concerned with a removable filter to prevent the buildup of Creosote in chimneys which become vulnerable to fires. A hollow enclosure means that is adapted to connect between the chimney and the fire source has within it a support for mountin... | 07/21/1981 |
| 4257792 | Steam-pressured smoke eliminator for tall smoke stacks A steam-pressured eliminator for use on top of a tall, industrial-type, brick or metal smoke stack to reduce their pollution of the atmosphere. This eliminator is operated by pressurized steam directed so as to intercept the flow of smoke tending to leave... | 03/24/1981 |
| 4240361 | Chimney safe heat saver Safety device in the general form of an apertured disc which aids in keeping sparks and flames from paper, kindling, wood etc., from shooting up the chimney and possibly causing fire; the device also helps to stop soot build up and it controls the rate at... | 12/23/1980 |
| 4202280 | Furnace flue apparatus for improved fly ash separation The disclosed apparatus is disposed in the "U"-section deflector at the bottom end of flues connected to each other in a multiple-flue, vertical flue furnace. A deflecting plate and two associated projections, one on the plate and the other on the wall, i... | 05/13/1980 |
| 4188892 | Method and apparatus for removal of fly ash from a waste incinerator with liquid slag discharge After the fly ash is removed from the flue gases by a separator, it is introduced into a combustion chamber which may be either the primary combustion chamber of the furnace or a separate chamber in a secondary combustion chamber. There, it is burned unti... | 02/19/1980 |
| 4168958 | Smoke stack air washer A cleaner for the products of combustion in a smoke stack in the form of a vertically elongated chamber having a multiplicity of inclined baffles extending from opposite sides of the chamber to beyond the center line thereof and water spray devices locate... | 09/25/1979 |
| 4163430 | Heat recovery and filter system and process for furnace exhaust gases A heat exchanger is interposed between the exhaust duct of a water boiler and the chimney or flue, and a water conduit, connected to the water return line of the heating system, is disposed within the heat exchanger in heat exchange relationship with the ... | 08/07/1979 |
| 4119046 | Incineration system and method An improved waste material incineration system and method of combustion where waste material is initially inserted through gravity assist into the combustion zone of a horizontally directed furnace. The waste material is impinged by the flame front of a b... | 10/10/1978 |
| 4113453 | Anti-pollution device for industrial stacks An anti-pollution system for industrial smoke stacks has a source of live steam feeding steam to a nozzle centered in the upper part of the stacks and several concentrically steam cooling towers of progressively smaller diameter. Each chamber opens into t... | 09/12/1978 |
| 4097252 | Electrostatic precipitator A horizontal-flow electrostatic filter for gas passing from a boiler to a chimney and having separate flow chambers lying horizontally side-by-side has inlet and outlet ducting arranged such that flue gases are divided to flow in opposite directions throu... | 06/27/1978 |
| 4091747 | Waste incinerator system A waste incinerator system, particularly suitable for bulk waste contaminated with radioactivity, is provided with a primary, upright combustion chamber with a removable, frusto-conical bottom section. The chamber is of the type having a double shell with... | 05/30/1978 |
| 4080931 | Apparatus for feeding solid fuel to a furnace grate An apparatus for feeding solid fuel to a furnace grate comprising a conduit adapted, in use, to extend downwards through the roof of the furnace, means for feeding solid fuel to the conduit above the lower end thereof said means including at least one fue... | 03/28/1978 |
| 4080909 | Pollution free multi-chambered burner A multi-chambered combuster apparatus for the controlled burning of all forms of light combustible organic material and the generation of steam or dry heat energy, resulting in essentially pollution free combustion as atmospheric emissions have zero opaci... | 03/28/1978 |
| 4080910 | Process for cooling the flue gases in waste material incineration plants without heat utilization A process for cooling and raising the dew point of the flue gases in waste material incinceration plants. Secondary air and water mist are sprayed into the combustion chamber above the combustion grate. the flue gases entering the flue gas cooler are ther... | 03/28/1978 |
| 4081255 | System for filtering stack gases A system for filtering stack gases and the like comprising an in-feed exhaust duct and a pair of filter vat cleaners disposed on opposite sides of the in-feed exhaust duct and horizontally spaced therefrom. A track assembly extends horizontally above the ... | 03/28/1978 |
| 4078503 | Method and apparatus for treating off-gas from a furnace for burning organic material in an oxygen deficient atmosphere A method and apparatus for treating off-gas from a furnace for burning organic material in an oxygen deficient atmosphere by passing the hot exhaust gases from the furnace ladened with combustible and noncombustible organic material to a cleaning device, ... | 03/14/1978 |
| 4063521 | Incinerator having gas flow controlling separator An improved, essentially pollution-free incinerator for waste materials is provided which includes vertically stacked, separately fired primary and secondary combustion chambers and central, cooperating, apertured partition and baffle structure serving to... | 12/20/1977 |
| 4056068 | Process for conditioning flue gases in waste material incineration plants with heat utilization A process for conditioning flue gases in waste material incineration plants with heat utilization. Secondary air is introduced into the combustion chamber above the combustion grate. The flue gases are moistened prior to entering the gas cleaner by water ... | 11/01/1977 |
| 4055125 | Incinerator, especially for burning waste material An incinerator, especially for burning waste material with a device for pfying flue gases derived from a combustion chamber for burning the waste material. In the combustion chamber or adjacent thereto, discharge openings of conduit means are provided fo... | 10/25/1977 |
| 4054424 | Process for quenching product gas of slagging coal gasifier A process is disclosed for quenching of the partial combustion product gas of a slagging coal gasifier containing suspended molten slag particles wherein the hot product gas of the gasifier is passed through a tubular quench zone into which a shielding ga... | 10/18/1977 |
| 4050390 | Method of treating sewage sludge A method of treating sewage sludge is disclosed. The method makes use of an unitary multi-hearth furnace and the sewage sludge is dried in an upper part of the furnace and subjected to pyrolyzation in a lower part thereof to cause the sewage sludge to be ... | 09/27/1977 |
| 4049569 | Process and apparatus for producing an inert gas Process for the production of an inert gas wherein liquid or gaseous hydrocarbons are burnt within a combustion chamber with air, possible with the admixture of a gaseous atomizing agent, especially steam, gas inert gas or air, whereby a first shock-like ... | 09/20/1977 |
| 4027602 | Combustion system A combustion chamber capable of being directly fueled with green bark, green sawdust and the like material formed of refractory material, the chamber having a grate therein at the feed end thereof disposed towards the bottom of the chamber and a reduced o... | 06/07/1977 |
| 4026688 | Exhaust vent filter A stack of filters mounted on a relief vent mounted in a retaining collar, the retaining collar mounted in a hood on a stack pipe attached to an exhaust vent in order to filter the exhaust gases entering the atmosphere.... | 05/31/1977 |
| 4019882 | Stack gas clarifier A liquid spray-type stack gas clarifier is adapted to be mounted within existing stacks and supported therein from the top of the stack structure. Means are provided for maintaining gas flow velocity within the stack to compensate for pressure changes res... | 04/26/1977 |
| 4017280 | Anti-pollution device for incinerators and the like A pollution control device having a tank provided with an inlet and an outlet arranged for passing a gaseous medium to be cleaned into the tank and through a bath of washing solution held in the tank. A blower unit, mounted outside of the tank, forces the... | 04/12/1977 |
| 4015546 | Apparatus and method for converting refuse to useful energy The preferred embodiment of the invention disclosed herein includes apparatus for and the steps of separating glass, metal and other generally non-combustible material from refuse to provide a volume of generally combustible refuse, shreddingthe volume of... | 04/05/1977 |
| 4008056 | Scrubber system for removing gaseous pollutants from a moving gas stream by condensation A gas scrubbing system comprising a plurality of water-fed scrubber units each coupled to a respective exhaust stack of a conventional hot-air dryer and each receiving its water supply from a common, centralized, skimmer-type water treatment facility. Non... | 02/15/1977 |
