Abstract: To suppress the generation of clinker so as to prevent the generation of a burning trouble, ceramic particles 30 are covered over a porous plate 4 to form a fire bed 3. Woody pellets 31 are scattered on the fire bed and combustion air is ejected from the lower side of the porous plate so as to burn the pellets. At the time of discharging ash generated by the burning to a secondary combustion space on the downstream side together with an air current of the combustion air or combustion gas, the ceramic particle layers and the woody pellet layer are stirred by a stirring section 21, 22 to thereby break clinker of the combustion ash formed in the fire bed, whereby the growth of the clinker is suppressed and the generation of a burning trouble is prevented.

Abstract: An incinerator comprises a feeding plate, a first combustion chamber, a second combustion chamber, a curved duct, an air exhausting device, a water screen device, and a water tank. The feeding plate is provided on the underside thereof with a vibrating device for causing the feeding plate to vibrate so as to move trash gradually into the first combustion chamber in which trash is incinerated to produce ash and exhaust fume which is then burned completely in the second combustion chamber. When the exhaust fume is passed through the water screen located in the curved duct, ash contained in the exhaust fume is washed away and deposited in the water tank which is provided therein with a device for removing ash that is deposited in the water tank.

Abstract: A carbon-in-ash monitor uses a fluidized bed furnace to burn any carbon in sampled boiler flue ash and evolve carbon dioxide therefrom. Fluidizing gas (air) is provided to the bed a measured flow rate and a batching arrangement feeds successive batches of ash of measured mass to the furnace at a measured frequency. A CO.sub.2 monitor measures the amount of CO.sub.2 evolved to determine the carbon content of the ash. Batches are provided using a vibratory table to transport ash from a point of supply to the table and a point of delivery of ash in a stream from the table. The vibratory table is horizontal and is driven so that the mode of vibration can be selected to reverse the direction of ash transport.

Abstract: A metering feeder for delivering solid fuels, such as municipal or industrial refuse, for combustion includes a pair of generally vertically arranged hoppers. An upper hopper containing relatively compacted or intertangled fuel discharges metered amounts of fuel into a lower hopper through the action of a ram-type pusher. Fuel discharged from the upper hopper is dropped into the lower hopper to develop sufficient kinetic energy to decompact the fuel. An upwardly inclined conveyor removes fuel from the lower hopper at an independently metered rate under optional control of a combustion control system. The action of the inclined conveyor further decompacts the fuel by underraking and mixing, thereby providing a well controlled, uniform, loose density fuel for combustion. The conveyor has a closed course of cleats which cyclically moves to remove fuel. The cleats extend in acute angular relation to the direction of movement for improved performance.

Abstract: 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 its sides sloping downward from the hopper, supports a ramp. The lower portion of the ramp is a perforated fire grate, while the upper portion is a plate that extends through the hopper bottom and into the stove. A fan effecting a forced draft through the grate is operatively connected to a fan motor. The improvement comprises a wiper bar which overlies generally the width of the plate. The wiper bar oscillates about the longitudinal center line of the plate to feed coal or other solid fuels from the hopper onto the grate. The oscillation of the wiper bar is effected by eccentric connection to a gear motor.

Abstract: At least one movable nozzle (14) is mounted in an opening (18) in the wall of a fluidized bed reactor (22). Solid feed materials (62) in granular form are conveyed to the nozzle (14) and injected into the reactor (22). By changing the direction of the solids injection flow stream, the mixing, residence, and reaction characteristics of the reactor (22) may be controlled. The nozzle (14) is elongated and arranged so as to tilt on a horizontal axis (58), and may inject fresh material or recycled material previously removed from the bed reaction zone (34).