Abstract: Embodiments of the invention relate to a grate bar front section and a matching grate bar rear section and to a grate bar including the grate bar front section and/or the grate bar rear section configured such that, by releasably connecting the grate bar front section to the grate bar rear section, manufacture and maintenance costs are reduced.

Abstract: A waste-to-energy conversion apparatus comprising a primary combustion chamber capable of holding a load of waste, and the primary combustion chamber further comprises a heat source to heat the waste and generate a syn gas stream, grates, within the primary chamber, capable of supporting the load of waste during heating, a mixing chamber wherein the syn gas is mixed with additional combustion gas, a multi-chambered secondary combustion chamber for combusting the mixture of syn gas and additional combustion gas, and an energy extraction system for extracting the heat energy generated by the combustion of the mixture of syn gas and additional combustion gas.

Abstract: A solid fuel conveying system is presented. The system includes a low power agitating grate. The grate has a surface for burning solid fuel in a burner, such as a downdraft burner. The grate includes a rotating camshaft and a plurality of movable grate elements. Each movable grate element has a cam end and a slide end. A cam bore passes through the grate element cam end, and a slide bore passes through the grate element slide end. A slide pin passes through each movable grate slide bore. A plurality of cams are disposed along the rotating camshaft, with each cam disposed within a cam bore in one of the plurality of movable grates elements. A camshaft drive rotates the camshaft, thereby moving each grate element in accordance with the orientation of the cam passing through the corresponding cam bore of that grate element.

Abstract: An apparatus and process is provided for combining fuel and combustion air to produce a mixture. The mixture is burned in a combustion chamber to produce a flame.

Abstract: An apparatus and process is provided for combining fuel and combustion air to produce a mixture. The mixture is burned in a combustion chamber to produce a flame.

Abstract: An apparatus for cooling bulk material with a grate flowed through by cooling gas. The apparatus comprises a plurality of planks configured to move forward and back in the direction of conveyance and, between the planks, a sealing device having spatially separate outer and inner sealing elements. The sealing device has between the sealing elements a conveying duct, which runs along the length of the planks and on which a gas supply is configured to produce a gas stream along the length of the conveying duct. Bulk material which has infiltrated through the outer sealing element can be transported away before it can reach and migrate through the inner sealing element. The accompanying sealing effect can considerably reduce the undesirable material through-fall, while enabling the use of low-wearing seals, which provide excellent wear resistance.

Abstract: A charcoal fired barbecue grill is described and shown herein. In one embodiment, a charcoal grate is disclosed which is formed from a sheet metal material. The charcoal grate includes a bottom wall and a plurality of side walls, The bottom wall includes a plurality of apertures to allow combustion air to reach the charcoal and a plurality of embossments to increase the structural rigidity of the charcoal tray. At least some of the side walls include side wall extensions which are configured to engage with the barbecue grill firebox to support the charcoal grate underneath the cooking grate. In a second embodiment, a charcoal grill firebox is disclosed which includes a dual purpose nesting target on an inside surface. The nesting target is not only configured to support a grate, it is also configured to nest with a corresponding nesting feature which is positioned on an outside surface of the firebox.

Abstract: A pyrolysis oven configured for vertical conveyance of material for incineration. The oven makes use of gravity and multiple plates to control the movement of material through the oven chamber. The plates and oven interior are heated in a low oxygen, pressurized environment to effect the decomposition of material as it freefalls down the chamber and makes contact with heated plates. The configuration and angle of declination of plates determines the freefall rate and retention time within the incinerating environment. The decomposition produces char and gas resultants, each of which are carried off through separate exits configured in the oven. The oven may be used as part of a waste management system in connection with a thermal oxidation chamber for the treatment of volatile organic compound gases that are a by-product of the pyrolytic process.

Abstract: Grate plate for the push-type grate of a clinker cooler, which has a topside bearing surface exposed to the hot material to be cooled. The grate plate including a rear region having devices for connection to a grate-plate carrier, such that the grate plate front projects over an adjacent grate plate. Longitudinally extending edge strips are connected in a force-transmitting manner to the devices for connection to the grate-plate carrier to support the plate front. The topside bearing surface is formed by a cover plate which is free of the edge strips, at least in front of the grate-plate carrier, and which has freedom of expansion in the horizontal direction in relation to the support part comprising the edge strips.

Abstract: In a two-stage wet waste burner, a first-stage combustion chamber has a symmetrical grate arrangement. The grate comprises spaced individual upright air supply tubes with flat horizontal upper surfaces swept by ash-removal plates. The height and width of the air supply tubes are selected to provide an upper surface profile approximating the natural angle of repose of the waste. Twin waste feed distribution augers span the chamber and rotate in mating troughs. The axis of rotation of each auger is sloped so that the discharge end of the auger is higher than the feed inlet end, and the trough sidewalls are inclined downwardly from the inlet end to the discharge end; these attributes promote even discharge of waste across the span of the chamber. Vertical walls of the air supply tubes are provided with air ports for supplying combustion air, the vertical orientation of the apertures and a degree of shielding of the upper surfaces of the air supply tubes inhibit clogging of the air ports.

Abstract: An apparatus for the combustion of organic waste such as poultry litter/manure, cow manure and swine manure, and/or human waste, and/or biomass using a moving grate over a stationary perforated plate to convert organic waste into usable energy. The unprocessed fuel is fed into the combustion chamber through a feed hopper by a moving grate being continuously pulled over a stationary perforated plate. The raw fuel is metered using a guillotine gate apparatus to control the depth of the fuel bed on the moving grate. Temperature controlled combustion air is directed under the stationary perforated plate (under fire air) into discreet controllable under fire air zones to initiate and drive the combustion process. The stationary plate is sectioned to match the discreet under fire air zones with holes and/or slots (perforations) shaped and sized for proper under fire air distribution and pressure drop through the plate.

Abstract: 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 system which can coordinate a host of parameters for optimal combustion. One design includes overlapping grate elements (50) through which combustion gas is introduced and may include apertures to introduce a pulsed mix gas as well as a separate temperature control gas. Efficient poppet designs (44) can be used to provide an economical and efficient combustion system.

Abstract: In a two-stage wet waste burner, a first-stage combustion chamber has a symmetrical grate arrangement. The grate comprises spaced individual upright air supply tubes with flat horizontal upper surfaces swept by ash-removal plates. The height and width of the air supply tubes are selected to provide an upper surface profile approximating the natural angle of repose of the waste. Twin waste feed distribution augers span the chamber and rotate in mating troughs. The axis of rotation of each auger is sloped so that the discharge end of the auger is higher than the feed inlet end, and the trough sidewalls are inclined downwardly from the inlet end to the discharge end; these attributes promote even discharge of waste across the span of the chamber. Vertical walls of the air supply tubes are provided with air ports for supplying combustion air, the vertical orientation of the apertures and a degree of shielding of the upper surfaces of the air supply tubes inhibit clogging of the air ports.

Abstract: A grate furnace with a grate (4) consisting of grate steps (15, 16, 17) composed [lacuna] grate elements lying next to one another, of which grate steps in each case every second grate step (15, 17) in the longitudinal direction of the grate can be driven for carrying out stoking movements and the grate steps (17) in each case lying therebetween can be fixed, has drive devices (18) under the grate, which are in each case arranged in housing chambers (25) and are in this way protected against impairment caused by material falling through the grate.

Abstract: A grate trough forms the lower part of a grate element which has a plurality of fixed and a plurality of movable grate block rows. The grate block rows each include a plurality of grate blocks suspended next to one another on a block holding element and connected firmly to one another. The grate trough forms a carrying element for the block holding tubes of the fixed grate block rows and support for a movable grate carriage carrying the block holding elements of the movable grate block rows. The grate trough has two side walls and also a front and a rear frontal wall, the frontal walls being arranged at right angles to the side walls. The side walls and the frontal walls are provided at their junction with projections and recesses which engage one into the other, with the result that the walls are held in an exact position. The length and width of the grate trough remain constant, even after welding, since the walls cannot be displaced relative to one another.

Abstract: A combustion grate including fire bars which are either wholly or partially cooled by a fluid circulating in a closed regulating circuit. The flow lines which conduct the fluid have thermal expansion capability. In particular, windings are provided in the shape of a helical spring in these flow lines. The fire bars include corrugated exchangers and can be replaceable rods.

Abstract: A grate trough forms the lower part of a grate element which has a plurality of fixed and a plurality of movable grate block rows. The grate block rows each include a plurality of grate blocks suspended next to one another on a block holding element and connected firmly to one another. The grate trough forms a carrying element for the block holding tubes of the fixed grate block rows and support for a movable grate carriage carrying the block holding elements of the movable grate block rows. The grate trough has two side walls and also a front and a rear frontal wall, the frontal walls being arranged at right angles to the side walls. The side walls and the frontal walls are provided at their junction with projections and recesses which engage one into the other, with the result that the walls are held in an exact position. The length and width of the grate trough remain constant, even after welding, since the walls cannot be displaced relative to one another.

Abstract: Thrust grate with a stationary grate component and with a grate component (2) moved forwards and backwards and is connected to members for its lateral guidance. These members are formed by oppositely arranged tension elements (3) stretched between the moved grate component (2) and a stationary structural part (1) essentially horizontally and perpendicularly to the direction of movement of the grate.

Abstract: 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 the direction of flow of the combustible material and have a number of grate-lining units lying side by side, the grate-lining units being connected in the region of their rear end to fixed and movable grate-lining carriers respectively and moving with their front end on or over the following grate-lining unit, and a drive being assigned to the movable grate-lining units, which drive has a torsion bar led out of the underblast region.

Abstract: A mounting device for supporting the movable part of a cooling or heating grate, while permitting the movable part to oscillate in the feed direction. The mounting device comprises a plurality of leaf springs connected by transmission members. The upper and lower ends of the leaf springs are alternately attached to transmission members to form symmetrical N-shaped assemblies in which lateral movement is permitted by equal deflections of the leaf springs.

Abstract: A grate cooler of simple construction whose cooling grate is substantly protected against wear and which can be operated in simple fashion and with a high cooling efficiency. A plurality of rotatably supported tubular oscillating shafts, spaced apart from one another, are arranged transversely to the conveyance direction of cooling feed material above a stationary cooling grate. Upwardly extending shovel arms (16a, 16b, 16c), are attached to the shafts which move with a reciprocating oscillatory motion (17) in the conveyance direction of cooling feed material. The shovel arms have a pushing surface on their forward side and a wedge surface on their rearward side and, in their oscillatory motion, moving the hot bed of cooling feed material successively from the beginning of grate-cooler to the discharge of the grate cooler.

Abstract: A process and system for the recovery of desirable constituent materials from vehicle tire pieces through pyrolysis. The system includes a pyrolysis section that is divided into a plurality of individual heating zones. Each of the heating zones is heated to a distinct operating temperature that is independent from the operating temperature of the remaining heating zones. Vehicle tire pieces are fed into the infeed end of the pyrolysis section by a rotatable feed cylinder that includes a screw-like flight extending from the inner wall of the feed cylinder. As the feed cylinder rotates, the flight directs the supply of vehicle tire pieces into the infeed end of the pyrolysis section. The pyrolysis section includes a rotary kiln that is divided into the plurality of heating zones.

Abstract: 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-cooling pipes which arc coupled to a water supply. An enclosed air plenum unit is positioned under and attached directly to the grate top surface. The air plenum unit is coupled to an air supply for providing combustion air through the top grate surface air-flow apertures. The air plenum unit includes multiple zones, each of which zones has an associated air flow control damper so that the flow of combustion air can be controlled. Ash siftings formed on the grate top surface when the biomass or other fuel is combusted fall into the air plenum unit and flow toward at least one ash-siftings discharge opening at a discharge end of the air plenum when the grate top surface and the air plenum is vibrated.

Abstract: To cool a grate having alternately fixed and movable rows (1, 1′) of grate bars (2), cooling liquid is sprayed into cavities (7), open at the bottom, of the grate bars (2) from spray tubes (10) situated in the underblast region (8) and in the process vaporizes essentially completely, so that the heat of vaporization is extracted from the grate bars (2). The angle sector (12) into which the cooling liquid is sprayed may be set in such a way that in each case only those sections of the grate bars (2) whose top sides form the free surface of the grate are sprayed. The cavities may also be closed except for a discharge opening leading into the underblast region and may be connected to a supply reservoir, in which the liquid is kept at a constant level, which is just below the discharge openings.

Abstract: 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 of ash, fuel and metallic deposits on the grate clip as it traverses a return loop.

Abstract: 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 in the grate bar and a pair of end pieces forming an inlet and an outlet at the outer boundaries of the block and connected to an inlet and an outlet for the cooling water. The pieces are so fixed to the bars that they maintain a clearance between the bars of 1 to 1.5 mm.

Abstract: A thrust combustion grate for burning refuse having altemately stationary (5) and movable (6) hollow grate plates (5,6) in a stairway formation, that rest on each other with their front underedge. The grate plates extend across the entire width of the grateway. The movable grate plates (6) are each driven by a hydraulic cylinder-piston unit (18,19). To the sides, the grateway is limited by panels of water-cooled conduits (8,9), which, in the longitudinal direction, each consist of at least two sections sealingly flanged together. The panels are rigidly screwed to each other by a plurality of horizontally disposed distancing bars (3,4) running perpendicular thereto. Running between the panels are two additional conduits (10,11) flanged together in the same way, for feeding primary air and cooling water, which are fixed to certain individual distancing bars (3,4).

Abstract: A loose-material grate includes a grate surface for receiving loose material and a chamber arrangement below the grate surface supplies the grate surface with a gas, for example cooling air. A lattice arrangement with adjustable openings is provided spaced from the grate surface. The adjustable openings communicate with grate surface openings of the associated grate surface. The lattice arrangement preferably is divided into several lattice sections, which have openings adjusted independently from one another, whereby the adjustable openings of the lattice sections, each sealed off from other lattice sections, communicate with the grate surface openings of associated areas of the grate surface. The adjustable openings of the lattice sections enable adjustment of the resistance of the grate, if necessary, differently at various grate sections depending on the demands for cooling.

Abstract: A roller grate arrangement for garbage-incinerating plants, in which a plurality of rollers with horizontal and parallel axes lie in an inclined plane. Primary air is fed to interiors of the rollers by air boxes located below the grate. The rollers have surfaces with air gaps for supplying the primary air, and the rollers are positioned to form a space between adjacent rollers. A component in the space between adjacent rollers, bridges the space between adjacent rollers. The component is free of air passages. Blast pipes are positioned in spaces between adjacent rollers and are connected to a separate system for feeding supplemental air.

Abstract: A roller grate arrangement for garbage-incinerating plants, in which a plurality of rollers with horizontal and parallel axes lie in an inclined plane. Primary air is fed to interiors of the rollers by air boxes located below the grate. The rollers have surfaces with air gaps for supplying the primary air, and the rollers are positioned to form a space between adjacent rollers. A component in the space between adjacent rollers bridges the space between adjacent rollers. The component is free of air passages. Blast pipes are positioned in spaces between adjacent rollers and are connected to a separate system for feeding supplemental air.

Abstract: 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 as well as with feed and discharge lines. The grate-lining units are connected at their rear end to a fixed or movable grate-lining bearer and rest with their front end on the following grate-lining unit, and the cooling passages being arranged essentially transversely to the longitudinal direction of the grate. The cooling passages are tubes arranged in a meander shape and integrally cast in the grate-lining units and whose spacing is adapted to the thermal loading on the grate-lining units. The tube spacing preferably decreases from the rear end to the front end of the grate-lining unit.

Abstract: 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 said direction for receiving fuel, opposite surfaces on opposite sides of the grate beams (1), and lateral surfaces (3) sealingly closely adjacent to each other across widths of the grate beams (1) substantially along full lengths of the grate beams (1) in the longitudinal direction. The grate beams (1)relatively reciprocate in the longitudinal direction for conveyting the fuel thereon. At least two longitudinally extending ducts (6, 7) are in thermal communication with the opposite sides of the grate beams (1) for a heat-transmission medium. Connecting points (12, 13) at least at one end of the grate beams (1) provide for flow of the heat-transmission medium at least one of towards and away form the ducts (6, 7).

Abstract: 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 conduit sections. These straight-line conduit sections (13) are flow-connected with reversers (14) in the respective side parts (11, 12). The inlet (15) for the coolant fluid is located in the rear part of the grate element, whereas the outlet (16) is located in the head area (7) of the grate element. In the outlet (16) there is a temperature probe (17) for monitoring the temperature of the coolant fluid. The grate element head (7) has recesses (18) in its foot (8) which open downward, serving as air escape orifices for the primary air, which is supplied from beneath.

Abstract: Described is a grating plate for a sliding grating for a burned-material cooling unit, the grating plate having, in the surface which holds the materials, a recess (13) in which cooling-air outlets (10) are located and, below the recess, a cooling-air feed space (17). The depth of the recess (13) increases from back to front. The cross-section of the cooling-air feed space (17) decreases correspondingly from back to front in accordance with the change in the cooling-air flow through the space.

Abstract: A grate element (1) for a grate surface, e.g. in a clinker cooler, is shaped in the form of a box between the walls (3, 4) of which a number of surface-defining grate bars (5, 6) are mutually arranged so that, between them, they form fine gas channels (7). The grate bars (5, 6) alternately consist of bars (5) having a substantially rectangular cross section and bars (6) having a cross section substantially of the form of an inverted T. The rectangular bars (5) overlap the transverse sections (6a) of the T-bars, each of which is provided at the free end with a projecting, longitudinal bead (17), whereas each of the rectangular bars (5) at the sides facing the T-bars (6) are correspondingly configured with depending, longitudinal beads (15).

Abstract: A low-pollutant system for waste materials treatment includes a process chamber for converting organic components of the waste materials into a flammable gas and a two-stage vortex burning chamber for complete combustion of the flammable gas. The vortex burning chamber includes a first substantially-horizontal combustion chamber and a second substantially-vertical combustion chamber disposed at a right angle to each other and communicating therebetween. The first combustion chamber has an inlet portion for receiving the flammable combustion gas from the gas generator means for injecting primary air into the first combustion chamber, thereby forming a mixture of air and the flammable gas and thereby igniting the mixture for partial oxidation thereof.

Abstract: The present invention pertains to a grate plate utilized in a cooling apparatus. Substantially the entire surface area of the exposed surface, that is, the surface of the grate plate that is not overlapped by a preceding grate plate, is recessed from its outside perimeter. The recessed exposed area is defined by alternating rows of (1) substantially tubular, hollow air distribution conduits that travel substantially the entire length of the recessed exposed area in a direction parallel to the movement of solid material through the cooling apparatus. The tubular air distribution conduits have two side walls and a top surface with which the solid material transported to the cooling apparatus comes into contact, and (2) narrow, open, secondary air distribution channels that also travel substantially the entire length of the recessed exposed area in a direction parallel to the movement of solid material through the cooling apparatus.

Abstract: 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 supports the burning fuel mass. The rolls are grouped into pairs of rolls, each pair of rolls having a drive roll and a driven roll. Each pair of rolls are geared together such that rotation of the drive roll simultaneously rotates the driven roll. Each roll has a plurality of protrusions about the circumference thereof, spaced down the length of the roll. The protrusions pass, during rotation of the rolls, the protrusions on adjacent rolls in non-contacting relationship to crush any cinders, clinkers or other tramp material. This action allows ash and the crushed material to pass between the rolls to an ash collection area beneath the rolls. Each of the drive rolls are rotated by a reversible drive mechanism which incrementally rotates the rolls.

Abstract: The present invention is directed to a solid waste conversion plan for the conversion of such solid waste as old tires to a gas or liquid hydrocarbon product, wherein the partial pyrolysis of the solid waste is carried out in a reactor having a grate in the lower section and a plurality of rotating fingers extending through the grate for preventing compaction of the solid waste in the reactor. The reactor, a heat exchange means and a stripper are connected in series. A blower is positioned between the heat exchange means and stripper for drawing oxygen-containing gas into the reactor and removing the gases formed therein and passing those gases through the heat exchange means and into the stripper.

Abstract: According to the invention it is suggested that, in a heating boiler with a vibrating grate (3), a supply pipe (6) from which fuel material in particle form, in particular pellets, is supplied to the grate, is mechanically connected to the grate (3) and arranged to freely support the grate, which is thereby freely suspended in the combustion chamber without contact with the bottom and walls of the combustion chamber. A vibrating means (19) is also mechanically connected to the supply pipe (6) and arranged to produce a rectilinear movement and to function as drive source to feed the fuel particles to the grate via the supply pipe (6). The vibrating means gives the fuel particles a toss movement obliquely upwards and forwards in the supply pipe and on the grate whereby the fuel particles move onto the grate and towards the end of the grate opposite the supply pipe (6).

Abstract: Methods and apparatus for reducing pollutant emissions, and in particular, for reducing NO.sub.x and particulate emissions, from spreader-stoker-fired furnaces. A combustible material is introduced into the spreader-stoker-fired furnace and combusted while the stoichiometric ratio of oxygen to combustible material in different regions of the furnace is carefully controlled. Control of the stoichiometric ratio is accomplished by controlling the amount of air injected into different regions of the furnace and by controlling the amount of smaller particles of combustible material or fines introduced into the furnace.

Abstract: A furnace adapted to burn wood chips and wood particles and including an inner cylinder adapted to be positioned in horizontal relation and including a primary combustion area. A funnel assembly is provided for supporting a quantity of wood particles and for funneling the wood particles into the primary combustion area of the inner cylinder. A second cylinder is also provided, the second cylinder having a length greater than that of the inner cylinder and having one end which surrounds the inner cylinder such that the inner cylinder and the second cylinder define an air space therebetween. The other end of the second cylinder defines a secondary combustion area where the combustion gases from the primary combustion area are mixed with secondary air.

Abstract: The present invention relates to a velocity controlling apparatus and method to be used with a stoker type burning apparatus on a refuse incinerator which moves refuse successively by reciprocating motion of movable fire grates. The movable fire grates, which repeat reciprocating motion in a cycle of forward movement from a backward end, backward movement from a forward end and a stop at the backward end, is so controlled that the total of time Tf of the forward movement, time Tb of the backward movement, and time Ts of the resting at the backward end equals a standard cycle time Tc calculated on the basis of a predetermined frequency N (N/min.) of the reciprocating motion of the movable fire grates.

Abstract: A shaking grate having inclined continuous tubes disposed parallel to the direction of incline and communicating with a liquid or fluid coolant circuit. The tubes are arranged on a vibrating grate carriage. The shaking grate is made free of grate bars by means of a planar tube-crosspiece-tube grate sheet construction, with the tube crosspieces having slot-shaped openings which are conically tapered in the direction of the fuel bed. The shaking grate is free of slots in the region of the fuel bed inlet as far as to the beginning of the first combustion zone of the fuel bed. The shaking grate is connected with crossbars of the vibrating grate carriage via ridge or comb plates and heat-compensating gliding elements. The shaking grate is provided with a riser for the draining liquid or fluid coolant. The riser is arranged in the charging region of the fuel bed inlet.

Abstract: An inertial conveyor has at least one transporting surface or section slidably arranged on rails with the rear end of the section sliding over an immovable rest, shifting means, preferably an adjustable spring, which permits the section to shift toward the rest and drive means for delivering lateral driving impulses of acceleration in one direction with an acceleration which is more than the acceleration of the friction force of any material on the surface to the section. The shifting means in between the driving impulses delivering lateral movement to the section in the opposite direction with less acceleration than that of material thus causing a non-harmonic movement so that the friction force will be overcome and material on the surface will move toward the immovable rest. In a preferred embodiment the inertial conveyor includes a plurality of sections and is part of a grate stoker.

Abstract: The present invention relates to air-cooled grate bars, in particular for mechanically conveying mechanical grates such as pivot step grates, comprising a cap of U-shape which is provided over the respective grate bar and is in particular welded on and which forms with the grate bar disposed therebelow passages extending longitudinally of the grate bar, the cap being led at the bearing-side end of the grate bar up to shortly before the curvature end and the cap and thus the passages being in each case sealed at the end face at the curved cap end.

Abstract: A grate for use in industrial furnaces has a frame which supports a number of elongated parallel grate bars having a T-shaped or U-shaped cross-sectional outline. One end portion of each bar has a socket which overlies a portion of an elongated rail forming part of or secured to the frame. The other end portions or the regions close to the other end portions of the bars are coupled to each other by a transverse shaft which holds the bars against movement at right angles to their longitudinal extensions and away from the frame. A second coupling system is provided close to the end portion of each bar to hold the bars against movement in the aforementioned direction. The second coupling system may include lateral projections provided on the bars and extending below or into openings of the neighboring bars. Alternatively, the second coupling system may include locking bolts which are affixed to or movable transversely of alternate bars and extend below or into openings of one or both neighboring bars.

Abstract: A grate for industrial furnaces wherein each row of grate bars includes alternating stationary and reciprocable bars. The stationary bars which flank a reciprocable bar are connected to each other by a bolt which extends transversely of the stationary bars and of the reciprocable bar therebetween and has hook-shaped end portions or screws engaging the inner sides of ribs forming part of the stationary bars and adjacent to the respective side of the reciprocable bar. The median portion of the bolt extends through elongated slots in the ribs which are provided at the underside of the reciprocable bar. The latter moves with respect to the bolt and with respect to the adjacent stationary bars.

Abstract: A two part grate includes separable front and rear grate plate parts releasably supported on a grate support member. The two part grate is secured to the grate support by a fastener engaged with the front grate plate part and with the grate support member, and the front and rear grate plate parts have interengaging structure whereby the engagement of the front grate plate part with the rear grate plate part holds the rear grate plate part downwardly against the grate support.

Abstract: A method and apparatus for incinerating combustible materials wherein the movement of the material particles is controlled as they are moved over an arrangement of grate sections during combustion in relation to particle density so that less dense particles travel faster than more dense particles to provide for increased combustion efficiency. The grate sections are arranged in adjacent groups and in an alined, downstepped succession. Each grate section has a downwardly inclined, upper support surface and a reciprocating pusher block is moved an adjustable distance over an inlet end portion of the upper support surface of each pusher block to impart moving forces through the material in a pushing stroke that is substantially shorter than the full travel distance of the material along the associated grate section.