Abstract: A system for recovering resources from sludge in which sludge containing water in the amount of 90 to 70 percent is first supplied to a sludge concentrator through a forced supply equipment where the sludge is concentrated to contain a water content of a maximum of about 60 percent; then is sent to a drying furnace having a fluidized sand bed. The product obtained in the drying furnace is separated to gas and solid. After the separated gas is pressurized by a fan and is heated by a heat exchanger through a circulator passage, a portion thereof is supplied to the drying furnace as gas for drying and the remainder is sent to the sludge concentrator. The water content is then removed from the concentrated gas and the gas obtained from the sludge concentrator is used in the system as gaseous fuel.

Abstract: A combustion system to utilize particulate fuel where the fuel is compressed and extruded into a selected shape to be burned in a combustion chamber under conditions where particles of burning material are maintained in the combustion chamber until the weight of the particulate material decreases to the point where the particle is carried from the chamber through a heat exchanger by combustion gasses to a scrubber section for removal of impurities such as SO.sub.2 and NO.sub.x.

Abstract: An ash disposal system for a furnace (10) including a pair of submerged scraper conveyors (24, 26) mounted within a common water-filled tank (16) with a water seal (18, 28) between the tank and furnace. The tank is mounted on wheels (32) and has a divider wall (30) between the two conveyors so that the tank can be positioned such that one or the other, or both conveyors together, can be operated to remove ash from the tank. A door or gate (34) in one of the side walls of the tank permits the tank to be completely removed from beneath the furnace when desired.

Abstract: An improved high temperature furnace is disclosed for consuming various fuels and organic waste materials while generating usable energy. The furnace has a high pressure aeration system in its combustion chamber to increase combustion efficiency. One set of obliquely oriented nozzles disposed at the periphery of the combustion chamber injects high velocity, heated air into the furnace and an opposed set of nozzles also injects high velocity, heated air tangentially from the adjacent center of the chamber. Heated, high velocity air from all the air nozzles is directed generally in the same tangential direction creating a swirling action or turbulence which accelerates the break up of the waste to increase the completeness of the combustion and retains the fuel in suspension within the furnace until combustion is essentially completed. The centrifugal force created by this swirling action impels the hot ash toward the outer chamber wall to minimize its upward escape through the incinerator flue.

Abstract: A gas converter is disclosed, especially for the treatment, including dissociation, of gases produced in the pyrolysis of waste materials. The converter includes a feeder for airtight feeding of fuel from the upper region of the reactor tower to the bed of hot fuel, a gas outlet, and a slag removal system. The reactor tower is furnished at its lower end near the conduits for the admission of air and gases with a rotating distributor member. The feeder is provided by a bucket-wheel valve arrangement.

Abstract: A garbage incinerator comprises a combustion grate, a passage for feeding garbage to be combusted onto the grate, a combustion chamber above the grate, and a flue communicating with the combustion chamber and projecting upwardly therefrom. A nozzle box supplied by a separate blower with compressed air is arranged in the region of the flue and provided with a plurality of nozzles oriented to direct air streams at high speed in at least two directions transverse to each other into the stream of flue gas passing through the flue. Preferably, some of the nozzles are oriented to direct air streams substantially parallel to the wall of the flue, whereas other nozzles are oriented to provide air streams which extend transverse to the direction of the first-mentioned air streams.

Abstract: In the combustion of waste mineral-bearing liquid streams, an improved type of construction for the combustion chamber, for the combustion of waste mineral-bearing liquid streams which permits continuous removal of solid particulate waste. An annular water channel is fitted inside of the outer shell of the combustion chamber at the bottom. The bottom of the chamber is closed off with a funnel-shaped, inverted conical floor, having a drain outlet at its center. An opening is provided in the side of the combustion chamber just above the bottom, for the exit of downflowing products of combustion. Water is supplied to the annular channel and flows through a longitudinal gap in the inner wall, to fall onto the funnel-shaped floor plate, to wash down all of the particulate matter that collects on the bottom plate, into the drain. Thus, the waste is removed as it is formed.

Abstract: Wet ash removal equipment in which a trough is filled with quenching water. An immersion member attached to the ash funnel is immersed into the quenching water. A side wall of the trough is sealed by a plate. The plate is supported upon a height-adjustable rod linkage and is guided in its movement on the side of the trough arrangements of rollers.

Abstract: A process and apparatus for the combustion of carbon-containing fuel in a reaction zone, with the products of combustion being removed from the top of the reaction zone and the slag from the bottom of the reaction zone. The reaction zone is separated from the bottom of the reactor by a partition wall having a central opening through which the slag is removed. The central opening is maintained open by a cylindrical member that is mounted below the partition wall and moved upwardly to clear the opening.

Abstract: A device to force out the incineration ash in which the main shaft that turns in the positive and inverse directions at a fixed angle by means of a driving mechanism is installed horizontally in the main body case provided with an ash receiving chamber in which water is filled for extinguishing of burning, an inlet opening for the incineration ash discharged out of a refuse incinerator and an outlet opening for the incineration ash after extinguishing of burning; and a pusher to force out the incineration ash settled down on the bottom of the ash receiving chamber and a pressing plate to force down matter floating on the water surface in the ash receiving chamber are fitted on the main shaft that turns in the positive and inverse directions at a fixed angle so as to move the pusher forwards and backwards and the pressing plate upwards and downwards.

Abstract: In coal-gasification apparatus, slag particles received in free-fall by a water bath at the bottom of the reactor, or of a waste heat boiler associated therewith, are wetted with oil, or another additive agent. As a result they become bonded together. This prevents floating and facilitates sinking of the slag for removal from below the water bath. An annular duct having nozzles at different angles is used to spray the slag particles with oil near the surface of the water bath. The nozzles create a turbulence at the surface, thereby increasing the effect on the slag particles. A lock hopper fluidly communicates with the water bath right below, and collects the slag particles. The removed slag is classified before being used or recycled by feedback into the reactor together with coal dust, water and oxygen as components for the reactive process.

Abstract: A wet ash remover which has a trough arranged underneath the ash funnel of a boiler and is filled with quenching water. A quenching water feed and an overflow are also provided. Ash conveying equipment passes through the wet ash remover. A cooling device with quenching water circulating through it continuously, is located between the overflow and the quenching water feed. One or more sets of parallel oblique plates are located inside the trough in front of the overflow. The set or sets of plates may extend throughout the entire length side of the wet ash remover. The plates may be inclined 50 to 60 degrees from the horizontal, and the planes may be planar. One of the sidewalls of the displaceable trough is connected detachably to the remainder of the trough and rigidly to stationary supports; the sidewall is at least as long as the immersion piece of the ash funnel protruding into the trough. The sidewall may accommodate the overflow and the set or sets of plates.

Abstract: In a coal gasification installation having a gasifier reactor and a water bath at the bottom of the gasifier reactor, a mixture of water and slag particles removed from the water bath is admitted under pressure into a container full of water and having a partition member for separating the heavier slag particles entrained to the bottom of the container from the lighter particles allowed on its opposite side to rise and float. A dam at the surface of the water in the container retains the floating particles while the clean water flows over the dam to an outlet. The floating particles which may be collected inside the container or entrained through a second outlet, are filtered and classified. Filtering is effected with a drum filter; and when several such filters are used in cascade, the slag particles are classified for recycling.

Abstract: A steam generating unit using gas recirculation (28) for steam temperature control, where the recirculated gases are introduced (38) into the furnace (12) through the bottom opening (34) through which the ash is discharged. Dampers (40) are positioned in the gas recirculation duct (28) for controlling flow therethrough.

Abstract: The gas cooler has a downcomer bounded by radiant cooling walls and a waterbath at the end of the downcomer. The depth of the waterbath is several times its horizontal extent and the waterbath is flowed through downwardly by water. The bath is connected by way of a pump, heat exchanger and a feed line to a water circuit. Means are provided to control the water temperature at its entry into the waterbath so that the entry temperature is maintained at a value somewhere between the dew point of the synthesis gas and the evaporation point of water at the working pressure of the synthesis gas.The result is substantial obviation of evaporation of water from the waterbath and the associated heat losses.

Abstract: A new and improved incinerator steam generation system subjecting to combustion debris such as municipal waste, utilizing the heat derived therefrom to produce steam for steam boiler, electrical generating facilities, heating facility for industrial or commercial plants, and so forth. This is provided with a series of boilers and controls, both manually adjustable and also automatic, whereby the possiblity of fire dangers are minimized, created temperature ranges of boiler gases are constrained to desirable limits, dump stack facilities are automatically controlled as to particular effectiveness for differing types of operating conditions, and where safety features are incorporated to shut down gas flow through the boiler during periods of boiler-water deficiency, excess steam generation relative to demand, and other conditions. Within the furnace area proper the pressure conditions are predetermined and are controlled during operation for desired efficiency, vapor removal, and materials' combustion.

Abstract: A melting apparatus has a low temperature melting portion (29), an exhaust gas cooling portion (26), and a dust collecting portion (B27) which are arranged, in succession, in an exhaust gas duct (54) of a melting furnace (B22). A low boiling point dust collected in the dust collecting portion (B27) is returned to the low temperature melting portion (29) for melting by retention heat of an exhaust gas flowing into the exhaust gas duct (54).

Abstract: An apparatus for dry removal of hot residues resulting from a gasification of coal or carbon-containing solid materials in the lower region or a shaft-like fluid flow gasification reactor which is operated under pressure in downward flow. A wall-heating surface, having upward flow therethrough and having a tube-fin-tube construction, is disposed parallel to and on the inner side of the insulation of the pressure tank wall. This wall-heating surface tapers in the manner of a funnel from a large cylindrical diameter to a small cylindrical diameter. The wall-heating surface has a constricted throat, and thereafter passes over from the cylindrical cross section to the cross section of a four-cornered chamber. Inlet openings are located directly ahead of and at the narrowest point of the constricted throat for cold, clean product gas which is used as fluidizing and cooling gas.

Abstract: A new and improved incinerator steam generation system subjecting to combustion debris such as municipal waste, utilizing the heat derived therefrom to produce steam for steam boiler, electrical generating facilities, heating facility for industrial or commercial plants, and so forth. This is provided with a series of boilers and controls, both manually adjustable and also automatic, whereby the possibility of fire dangers are minimized, created temperature ranges of boiler gases are constrained to desirable limits, dump stack facilities are automatically controlled as to particular effectiveness for differing types of operating conditions, and where safety features are incorporated to shut down gas flow through the boiler during periods of boiler-water deficiency, excess steam generation relative to demand, and other conditions. Within the furnace area proper the pressure conditions are predetermined and are controlled during operation for desired efficiency, vapor removal, and materials' combustion.

Abstract: A water-wall, coal-fired furnace has a Coutant transition section extending down from the lower end to the water wall to the surface of water impounded in the lower ash hopper. The surface of the water is provided with a reflecting material which will permit the passage of solid residue from the coal firing into the water while reflecting incident radiant heat back up into the generating section of the furnace.

Abstract: A wet-bottom, solid fuel gasifier has a slag tap through which a portion of the product gas is back-flowed through the slag tap to maintain the temperature of the slag hot enough to maintain continuous slagging. The reverse flow of the product gas portion is controlled by the negative pressure generated in the throat of the gasifier.

Abstract: A combustion apparatus for a granular solid fuel, comprising a plurality of horizontal cylindrical combustion chambers serially connected in their axial direction, partitions interposed between the combustion chambers, communication holes pierced through the partitions for passing the combustion gas. To the combustion chambers, air is delivered in directions to cause the gas to flow in a swirled state, allow the granular fuel to be burnt as agitated and fluidized within the upstream combustion chamber, and forward the gas in a swirled state from the upstream to the downstream combustion chamber. The combusted gas, on reaching the extreme downstream combustion chamber is drawn out by means of a gas delivery pipe having one end thereof communicating with the combustion chamber.

Abstract: A method for desulfurization, denitrification, and oxidation, of carbonaceous fuels including a two stage oxidation technique. The carbonaceous fuel, containing ash, along with an oxygen-containing gas is introduced into a first stage partial oxidation unit containing a molten ash slag maintained at a temperature of about 2200.degree.-2600.degree. F. A flux may also be introduced into the first stage partial oxidation unit for the purpose of increasing the basicity and maintaining the viscosity of the molten ash slag at a value no greater than about 10 poise. The carbonaceous fuel is gasified, and sulfur is chemically bound and captured in the molten ash slag. Since the first stage is operated in a gasification mode (reducing atmosphere), essentially all of the nitrogen in the fuel is converted to diatomic nitrogen, which results in low nitrogen oxide emissions upon final combustion.

Abstract: Apparatus for handling ash and slag produced in the combustion of coal or other ash-bearing fuel in the furnace (10) (not shown) of a steam generator, including a submerged scraper conveyor (20) beneath the furnace, and a water seal including plate means (24) extending from the furnace bottom or transition chute into the water (18) in the tank (16) housing the scraper conveyor, which plate means (24) also form a seal at their upper ends (40,42) with the furnace bottom or transition chute, for preventing the atmosphere from being exposed to the furnace interior. A motor (50,52) is provided for moving the plate means (24) upwardly and downwardly, to allow the submerged scraper conveyor (20) and its tank (16) to be quickly removed from beneath the furnace (10) when the unit is shut down for maintenance purposes.

Abstract: This invention is a method and apparatus for cleaning stoves, furnaces, fireplaces and the like, which is characterized by a vacuum system having a specially designed pickup member insertable into a stove, furnace, fireplace or the like, in such manner that, when being inserted or removed, ashes and the like, will not escape from the stove, furnace, fireplace or the like, and also which has sufficient protective characteristics that it will not accept large burning objects and the like, and wherein means are provided to drop material evacuated from the stove, furnace, fireplace or the like, into the water or other suitable bath for quenching as required. The method and apparatus incorporate the providing of a specially designed connection opening between the interior and exterior of the stove or the like, which opening and its elements are cooperable with a specially designed vacuum pickup attachment, together with an exterior mounted quenching medium to receive the material evacuated.

Abstract: Apparatus for handling ash and slag produced in the combustion of coal or other ash-bearing fuel in a top-supported furnace (10) of a steam generator, including a submerged scraper conveyor unit (14) beneath the furnace (10), and a water seal (24, 26) including a bottom-supported trough (26) positioned beneath the furnace (10), and plates (24) secured to the furnace bottom extending down into the trough (26). The submerged scraper conveyor unit (14) is bottom-supported independently of the trough (26), and there is an adjustable (34) seal member (29) between the two to prevent gas leakage therebetween.

Abstract: A method and apparatus for cooling hot bulk material, such as glowing coke, clinker, or sinter material, include a vertically oriented cooling tank into which the hot bulk material is introduced and in which the material flows downwardly under gravity and is discharged from an outlet. At least two partial currents of cooling gas are fed into the cooling tank at respective feeding points therein, the feeding point being respectively arranged one over the other so that the cooling gas fed into the tank flows upwardly around the bulk material as the latter flows downwardly to cool the same with the cooling gas being correspondingly heated.

Abstract: An apparatus for treating a water solution of a waste material containing a salt with smelt-water explosion characteristics comprises an open-bottomed incinerator and a gas-liquid separator disposed beneath the incinerator in fluid-flow communication therewith. The waste solution is sprayed into the incinerator and heated therein so that the salt in the solution is fused, water vaporized and organic components of the solution burned. The combustion gases and water vapor flow downwardly into the separator, while the fused salt forms a deposit on the inner surface of the incinerator and flows downwardly into the separator. At the junction between the incinerator and separator, cooling water is fed to the fused salt so that the deposit of salt is solidified and cracked into separate masses which fall together with the cooling water onto an inclined baffle member disposed in the separator and roll downwardly on the baffle member.

Abstract: A wet deasher arrangement in which a trough is filled with quenched water and is arranged underneath an ash hopper of a boiler. The trough is provided with a quench water feed as well as an overflow and ash conveying equipment. The quench water is permanently circulated through a cooling unit with the aid of a pump, and the cooling unit is arranged between the overflow and the quench water feed. Oblique parallel plates are arranged within the trough before the overflow. The cooling unit has heat exchanger tubes divided into sections which are swept successively by quench water. They are accommodated in a pump upstream tank which precedes the pump. The upstream tank is obliquely arranged and converges to an outlet opening. The sections of the cooling unit may be arranged above each other within the pump upstream tank.

Abstract: Apparatus for sealing the periphery of an opening such, for example, as an opening through which bulk material is fed into a bin, a shaft opening through which hot bulk material is cooled, or an opening in a blast furnace shaft, of the type wherein a channel extends around the periphery of the opening into which a dividing wall extends whose lower end is spaced from the channel bottom so as to define a pair of adjacent channel portions which intercommunicate through the space between the lower end of the dividing wall and the channel bottom so that liquid provided in the channel at least fills the communicating space. According to the invention, a pair of external channels are provided, each of which is adjacent to and extends around one of the inner and outer sides of the peripherally extending channel, respectively, so that the latter comprises an inner channel.

Abstract: A structure for impounding liquid is disclosed below the combustion chamber of a steam generator. The structure divides the impounded liquid in two sections, or pools. The first section, or pool, receives the hot residue gravitated from the combustion chamber and absorbs the thermal and mechanical shock of the residue. The second section, or pool, is connected to the first pool through a gate valve and contains a continuous conveyor which transports the cooled residue, received from the first pool, to a point of ultimate disposal.

Abstract: A deasher arrangement in which a water-filled trough is arranged beneath the ash hopper of a boiler. The trough is laterally movable, and accommodates a conveying device. A lifting device is provided with a lift corresponding at least to the boiler expansion. The trough is associated, furthermore, with a dipping element connected to the ash hopper and permanently extending into the water fill of the trough during operation of the boiler. The trough consists of two sections separated by a partition wall, and accommodates one conveying equipment each. The partition wall has a height which is lower than the side walls of the trough. The top of the partition wall is situated above the bottom of the dipping element when the boiler is in operation and the trough is raised. An additional partition wall may be provided with a collecting tray therebetween.

Abstract: A furnace includes a downdraft combustion chamber, a burner mounted at the top of a combustion chamber for burning particulate ash-containing fuel, and a generally horizontal duct near the lower end of the combustion chamber for withdrawing hot gases rsulting from the combustion. The combustion chamber is downwardly tapered to a relatively small conduit, downward into which molten slag from the ash flows. The slag, upon passing through the conduit, passes into and through a downwardly open slag-receiving chamber below the combustion chamber. The slag falls through out the bottom of the slag-receiving chamber into a volume of water immediately below. A portion of the hot gases is diverted through the slag-receiving chamber in order to maintain the slag-receiving chamber at a sufficiently high temperature so that the slag passing therethrough is prevented from solidifying. The portion of hot gas is then directed to a mill for drying fuel therein prior to combustion.

Abstract: Apparatus for handling ash and slag produced in the combustion of coal or other ash-bearing fuel in the furnace (10) of a steam generator, including a submerged scraper conveyor (14) beneath the furnace (10), and a water seal (22) including a trough (26) between the two for preventing the atmosphere from being exposed to the furnace interior. A hydraulic actuator (40,42) is prodived for allowing submerged scraper conveyor (14) to be quickly removed from beneath the furnace (10) when the unit is shut down for maintenance purposes.

Abstract: In the back-pass of a steam generator, hot fly ash collects at a station. At the station to which the ash gravitates, a liquid bath is provided to receive the ash. Nozzles are arranged within the liquid receiving the ash to urge the material into a mechanical grinder in which the ash is reduced for ultimate disposal.

Abstract: This invention relates to an apparatus of regenerating fluidizing medium employed in a fluidized-bed incinerator, wherein the sticking matter attached to the fluidizing medium employed in the incinerator in the process of burning up in the incinerator the ash collected from power plant boiler exhaust gases (EP ash) is removed from the fluidizing medium chemically and physically.

Abstract: An improved pulverizer rejects disposal system having an air separator disposed in the sluice pipeline to remove any air entrained in the pulverizer rejects/water slurry prior to injection into the bottom ash hopper of a pulverized coal-fired boiler.

Abstract: A slag removal system for wet bottom boilers is provided wherein tandem tap holes are provided. The first hole comprises a vertical hole to be selectively closed by damming and the second hole comprises a horizontal hole and is dammed or sealed with sand in order to seal against the passage of boiler gases through the tap holes. In addition, multi-compartment slag tanks are provided and each slag tank may be selectively placed into and taken out of service, as desired. Further, an alternate type of slag tank is disclosed wherein a suitable cooled bed of slag particles is provided on a turntable and the tapped molten slag is deposited onto a peripheral portion of the turntable as the latter is rotated and a breaker is provided for breaking up the resultant ribbon of solidified slag at predetermined intervals.

Abstract: An immersion plate fastened to the ash funnel of a steam generator combustion chamber and protruding into the water surface of a trough of a wet-ash remover filled with quenching water and located underneath the ash funnel. Carriers pass transversely through the immersion piece and are suspended by screws from the tubing of the funnel; a seal which is deformable in the direction of action of the screws is located between the immersion piece and the ash funnel. The cooled carriers may consist of two U-profiles welded together and the carrier ends outside the immersion pieces may be open. A U-shaped profile with the opening upwards is mounted on part of the carrier lying within the immersion piece. The sidewalls of the immersion piece may consist of several plate sections and each plate section has, at one edge, a slot for the edge of the adjacent plate, with play in the longitudinal direction.

Abstract: An assembly of a quench ring and dip tube is for use with a reactor vessel. It is particularly beneficial where the reactor generates large quantities of molten slag. The quench ring is mounted against the floor of the reactor vessel for cooling same, and there are a plurality of spray passages directing cooling water against the inside of the dip tube which surrounds the ring at the upper end, while extending into a bath of quench water.

Abstract: An ash removal system for a coal-fired boiler, where the temperature of the water in the ash hopper is maintained at approximately 140.degree. F. under all operating conditions of the boiler, by running cooling water through heat exchange surface positioned in the ash hopper. The cooling water, after picking up heat, is passed through heat exchange surface located outside of the ash hopper, before being introduced into the ash hopper. Some of the heated cooling water can be used as low level heating fluid around the plant site, if desired.

Abstract: Cyclonic furnace for efficient burning of such waste products as rubber tires or industrial or domestic refuse with minimum atmospheric pollution and high heat output has fixed circular hearth with central outlet for slag and ash discharge, material to be burnt being fed onto the hearth periphery; combustion air ports opening tangentially into its combustion chamber; and automatic control means regulating e.g. material infeed and inflow of combustion air including a facility for monitoring combustion conditions in the furnace, preferably by measurement of CO and CO.sub.2 levels, and comparing those conditions with previously recorded conditions automatically to predict changes and make anticipatory adjustments of the furnace controls giving extremely rapid control reaction and enabling combustion air requirements to be cut to a minimum, of which the following is a specification.

Abstract: Ash removal equipment associated with pulverized coal furnaces for large-capacity steam generators having a chain conveyor disposed beneath the combustion chamber of the furnace immersed in water and having a protective hood preventing entry of outside air to the combustion chamber with hinged flaps by which the ash outlet of the combustion chamber can be closed off. With the coal furnace out of operation, the ash removal equipment can be elevated so that the hinged flaps are immersed in the water and can be lowered or raised during operation of the coal furnace relative to the position of the ash outlet.

Abstract: An apparatus for discharging cinders from an incinerator has an upwardly open intake pit having horizontally spaced front and rear walls. A water-filled trough is provided below this intake pit and has an upwardly concave floor and defines an upwardly extending outlet for cinders which have been quenched after they have dropped down in the pit into the water in the trough. A stepped plunger has a front face slidable in an arcuate path along the floor of the trough between a retracted position relatively close to the front wall defining the pit and an advanced position relatively far from the front wall. This plunger also has an upper surface on which is provided a step having a face which lies in back of the front wall in the retracted position of the plunger and between the walls in the advanced position. Thus as the plunger is advanced from the retracted to the advanced position the step pushes large objects against the rear wall of the pit and compresses these large objects.

Abstract: A process for quenching molten residue discharged from a furnace hearth, through a non-submerged taphole, including the steps of: (a) providing a vertical slag duct in sealed communication at the top with the taphole and sealed at the bottom by being immersed a substantial distance into water in a quench tank, (b) flowing the molten residue from the hearth by gravity down the central axis of said slag duct and quenching it in the water contained in the submerged portion of the slag duct, said water being at a temperature sufficiently high to prevent slag explosions, wherein the improvement comprises:Substantially reducing cooling of the tap and hearth areas of said furnace by removing hot fluid from said duct and replacing same with cooler fluid, thereby substantially preventing steam generated by quenching of said molten residue in the water contained in the submerged portion of said duct from entering said tap and hearth areas.

Abstract: The invention relates to a sluice for sluicing out clinker and ashes from a furnace, where the sluice is arranged in a residue shaft situated, for instance, at the end of a fuel-transporting grate in a furnace or at the end of a rotary kiln. The sluice is divided into an upper chamber and a lower chamber by a sluice flap which can pivot downwards, said lower chamber ending in a collecting compartment arranged at the bottom of the shaft, from where the clinker and ashes by means of a scraper are forced through an opening for further disposal.

Abstract: A slag handling apparatus and method are disclosed wherein slag is received at an elevated temperature of about 3000.degree. F. and an elevated pressure of about 450 pounds per square inch and is handled so that it may be transported at atmospheric pressures and low temperatures of the order of 100.degree.-200.degree. F. The slag is sequentially fractured and ground by a grinder while descending downwardly through a column of water in a series of vessels.

Abstract: A method of discharging residues resulting from gasification of fuel in a chamber filled in a lower portion thereof with water and having a gas cushion at high pressure above the water level, in which the residues accumulating in the chamber are discharged through a sluicing container connected to the lower end of the chamber and conveyor means connected to the sluicing chamber.

Abstract: A method of handling hot particulate material including the steps of producing a flow of liquid coolant in which there is substantially no increase in the width of flow with increasing depth; introducing hot particulate material into the path of flow of coolant to create a temporary barrier arresting the flow of coolant; and allowing accumulated coolant to breach the barrier and carry away with it particulate material of the temporary barrier.

Abstract: A sluice arrangement for sluicing out clinker and uncombusted residue from combustion furnaces such as rotary kilns and the like. A steel plate duct having a cross-section at least equal to that of an ash pit is attached to the lower end of the ash pit in a downwards steeply slanting position and is provided with an upper and lower mechanically operated swinging flap. By manually or automatically controlling the closed/opened positions of the flaps relative to each other an effective sluice is provided. A pilot system for the sluice wherein the motive power for operation of each of the flaps is controlled by separate changeover devices is also provided wherein the changing over effects the required closing/opening sequence of the flaps to provide an effective sluice.