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| Number | Title | Issue Date |
| 7284491 | Grate structure for solid fuel burners In one aspect, a grate segment for a burner, comprises a substantially rigid body (30) having a dispersed array of cavities (38) filled with a refractory material. In another aspect, a solid fuel gasifier includes a housing (12) defining a gasif... | 10/23/2007 |
| 7114612 | Method and apparatus for treating a layer of bulk material The invention includes a method and apparatus for treating, in particular cooling, a layer of bulk material by means of a stream of gas passed through it on a grate. The grate includes a plurality of elongated planks which extend in a conveying direction and are dri... | 10/03/2006 |
| 6938563 | Grate furnace A grate furnace with a grate includes grate steps made of grate elements lying next to one another. Every second grate step in the longitudinal direction of the grate can be driven for carrying out stoking movements and the grate steps in each case lying therebetwee... | 09/06/2005 |
| 6655304 | Mass fuel combustion system An improved mass fuel combustion system can be designed in a variety of embodiments and alternatives, including designs which include independent gas feeds, independent gas pulsing, independently controllable vibration systems and an overall control syste... | 12/02/2003 |
| 6412429 | Extended life traveling grate side plate An extended life traveling grate side plate having a heat transfer opening formed in a front portion of the side plate. The side plates are attached to the lateral side surfaces of each chain in a traveling grate conveyor. The front portion of each side p... | 07/02/2002 |
| 6405661 | Combustion enhancing air foil A combustion enhancing member employed with a stoker combustion system is disposed on the grate of the stoker and includes at least one chamber. The chamber has at least one fluid inlet for receiving a combustion enhancing fluid and a plurality of fluid o... | 06/18/2002 |
| 6378447 | Furnace with liquid-cooled grate elements and cooling circuit The furnace with liquid-cooled grate elements has an inflow and a return to these grate elements, the inflow and the return being connected to a condensation device open to the atmosphere. The inflow has arranged in it a U-shaped cooling-liquid seal, one ... | 04/30/2002 |
| 6332410 | Grate for incineration plants The invention relates to a grate for incineration plants for the incineration of combustible material, in particular refuse, comprising at least one grate track, which is composed of fixed and movable grate-lining rows, which are arranged alternately in t... | 12/25/2001 |
| 6269756 | Liquid cooled grate plate A water-coolable grate plate including a top surface, oppositely disposed sides and at least one cooling channel which is thermally connected to the top surface. The cooling channel connects a first coolant port, which is substantially centered between th... | 08/07/2001 |
| 6220190 | Water-cooled oscillating grate system An integral water-cooled, air permeated, vibrating grate system for combusting biomass and other fuels in a boiler includes a grate top surface having air-flow apertures extending therethrough. The grate top surface is supported by a plurality of water-co... | 04/24/2001 |
| 6196143 | Clip having sloped sides The present invention is an apparatus for use as a grate clip on a traveling stoker grate assembly in a furnace or incinerator. The grate clip apparatus includes a sloping profile along a significant portion of its underside so as to prevent the build-up ... | 03/06/2001 |
| 6145451 | Water-cooled firing grate A water-cooled firing grate made up of grate bar blocks extending over the width of the grate and each having a plurality of grate bars mounted on a grate bar carrier and interconnected by connecting pieces communicating between meandering shaped channels... | 11/14/2000 |
| 5913274 | Incineration grate with internal cooling A grate for a firing plant, having at least one grate track with a plurality of fixed and moving rows of grate-lining units, which rows alternate in the longitudinal direction, are bounded on both sides by side walls and are provided with cooling passages... | 06/22/1999 |
| 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 |
| 5899149 | Incineration grate with ducts for conveying a heat transmission medium A fuel-conveying incineration grate has grate beams (1) for extending in a longitudinal direction obliquely downward in the longitudinal direction. The grate beams (1) have first surfaces (4) on first sides of the grate beams (1) stepped downwardly in sai... | 05/04/1999 |
| 5724898 | Grate for a firing system The grate for a firing system has at least one rate conveyor having a plurality of fixed bar rows and moving bar rows alternating in the longitudinal direction, which are limited on both sides by side walls and which are composed of water-cooled grate pla... | 03/10/1998 |
| 5636581 | Grate bar and grate with cooling apparatus and process for cooling Fluid-cooled grate bars and grates for use in a combustion furnace such as a garbage incineration plant and a process for cooling the grate bars and grates. The grate bar has a duct defined therewithin for guiding a coolant supplied by a fluid-cooling app... | 06/10/1997 |
| 5323717 | Refuse feed assembly for incinerators An assembly for feeding refuse from a charging chute of an incinerator onto a stoker disposed in the incinerator comprising a stationary support means disposed adjacent the stoker, stationary guide means mounted on the support means in alignment with the ... | 06/28/1994 |
| 5245952 | Quiet, non-condensing liquid heater using a non-mixing blower combustion system A fluid heater for a non-mixing blower combustion system comprises a flame holder including an igniter positioned at the region of highest gas-air concentration and an insert positioned in the lower portion of the flame holder to create a gas-air distribu... | 09/21/1993 |
| 5178076 | Bio-mass burner construction A bio-mass burner construction for alternate fuels at temperatures from about 1,800 degrees F. to about 2,800 degrees F. to replace oil and gas burners. The burner utilizes a first burning chamber having a falling fuel, entrained bed zone positioned above... | 01/12/1993 |
| 5027719 | Rotary grate for a solid fuel furnace The present invention discloses a rotary grate for a solid fuel fired furnace which allows ash, cinders and clinkers to be removed from the burning fuel mass, without reducing or stopping the combustion process. A plurality of parallel water cooled rolls ... | 07/02/1991 |
| 4793471 | Furnace grate structure A furnace grate structure for a furnace or incinerator on which solid fuel advances in an advancing direction has at least two parallel grate beams extending substantially transversely to the advancing direction, the beams being mounted on a substructure ... | 12/27/1988 |
| 4776287 | Hearth grate with transverse bars of elements which are secured together by their frontal faces A hearth grate comprises a succession of transverse bars which are alternately fixed and movable with a reciprocating movement, said bars being formed by disposing in side-by-side relationship at vertical lateral faces elements which are generally rectang... | 10/11/1988 |
| 4697530 | Underfed stoker boiler for burning bituminous coal and other solid fuel particles An automatic stoker boiler has a heat transfer compartment above a combustion chamber which is divided by a horizontal partition inclined upwardly from the rear end of the boiler towards but terminating short of the front end thereof to provide a restrict... | 10/06/1987 |
| 4671190 | Fire grate A fire grate is adapted to support a combustible mass. It is inclined longitudinally from a feed end at which it receives the combustible mass to a discharge end. It comprises a plurality of elements disposed in transverse rows alternately fixed and mobil... | 06/09/1987 |
| 4665840 | Mechanical stoker An improvement for use in a mechanical stoker with a coal stove is disclosed. The improvement device is used with a stoker, generally including a hopper, operatively connected to a small stove having a fire box forming an ash pit. The fire box, through it... | 05/19/1987 |
| 4638905 | Inclined grate for furnaces A furnace grate structure for a furnace or incinerator on which solid fuel advances in an advancing direction has at least two parallel grate beams extending substantially transversely to the advancing direction, the beams being mounted on a substructure ... | 01/27/1987 |
| 4569437 | Inclined furnace grate with at least one movable grate bar An inclined furnace grate for an industrial furnace or incinerator with transverse grate beams supporting a downwardly stepped succession of banks of stationary and reciprocating grate bars, the grate beams having arranged in their supporting surfaces rem... | 02/11/1986 |
| 4563959 | Step type stoker with oscillation mechanism The present invention relates to a step type stoker with an oscillation mechanism having: a plurality of stoker frames (2 and 2') which are installed at an interval in the upstream to downstream direction, and at least one of which forms an air supply pat... | 01/14/1986 |
| 4548139 | Grate for industrial furnaces A grate for industrial furnaces wherein pairs of stationary grate bars flank movable grate bars. The grate bars of each pair are connected to each other by an elongated coupling device which extends through one or more elongated slots of the movable grate... | 10/22/1985 |
| 4537140 | Automatic coal stove stoker An improvement for use in a coal stoker is disclosed. The improvement device is used with a common stoker generally including a hopper operatively connected to and aligned with a base box forming an ash pit. The base box, through its sides sloping downwar... | 08/27/1985 |
| 4537139 | Grate of incinerator A drum-shaped grate of an incinerator includes a plurality of cylindrical drums, the grate covering of which is formed of a plurality of suspended middle grate bars which are combined in segments and arrested by fixed grate bars. The adjacent grate bars i... | 08/27/1985 |
| 4494469 | Stepped grate for an incinerator plant A stepped grate for an incinerator plant consists of grate blocks (1) placed adjacent in rows, and placed in succession in the travelling direction of the refuse and garbage resting on parallel placed grate beams (9), where every second row of grate block... | 01/22/1985 |
| 4471704 | Reciprocating grate systems for furnaces and incinerators A new and improved reciprocating grate system for furnaces and incinerators wherein the system is advantageously constructed to accomplish a variety of objectives. Adjacent flights of adjacent portions of the composite grate structure reciprocate back and... | 09/18/1984 |
| 4450952 | Fire grate for a combustion furnace A fire grate for a combustion furnace having a pair of parallel spaced apart frame walls and a plurality of alternately arranged stationary and movable grate bars extending between and secured to the frame walls. The grate bars are formed of a plurality o... | 05/29/1984 |
| 4350244 | Push grid The invention relates to a push grid comprising grid panels which overlap one another and which are alternately fixed and reciprocable longitudinally of the push grid; grid panel supports provided with a slot-like opening for holding the grid panels; tie ... | 09/21/1982 |
| 4337857 | Stepped grate-type cooler for hot particles A stepped grate-type cooler of the type employing a plurality of spaced grate plate carriers, alternate carriers being stationary and the carriers positioned between the stationary carriers being reciprocable relative thereto. Each of the grate plate carr... | 07/06/1982 |
| 4313387 | Method and apparatus for controlling a solid fuel burning furnace A method and apparatus for controlling the burning of a solid fuel furnace is disclosed. In a furnace having a burning chamber, a fuel supply mechanism in the form of a rotating grate, a fuel discharge mechanism in the form of a rotating grate located adj... | 02/02/1982 |
| 4299177 | Stoker structure A screw-conveyor or auger feed and associated leveling system for underfeed stoker troughs receiving particulate, cominuted, or chunk material, such as "green" coal, by way of example, this for assuring a uniformly rising level of material relative to the... | 11/10/1981 |
| 4278052 | Boiler control system A boiler control system for boilers fired by solid fuels wherein the fuels are carried through the combustion zone of the boiler on a traveling grate and wherein the air flow for combustion as supplied to the undergrate region utilizes a control of the fu... | 07/14/1981 |
