Abstract: A receiving assembly for a solid waste disposal system is provided. The assembly includes a pit defined by vertical side walls and having an upper opening. An upwardly inclined receiving conveyor is positioned within the pit. An infeed conveyor includes a first end positioned beneath the discharge end of the receiving conveyor such that solid waste material is dropped by the receiving conveyor onto the infeed conveyor. A heavy curtain is suspended above the discharge end of the receiving conveyor for controlling the fall of the solid waste material onto the infeed conveyor. A second curtain is positioned between the conveyors to prevent material from falling therebetween. The infeed conveyor is operated at about twice the speed of the receiving conveyor.

Abstract: A method and a system are provided for preventing explosions within solid waste disposal facilities having a shredder, a shredder infeed conveyor, a shredder discharge conveyor, a trough conveyor, and a boiler. The system includes a gas sensor, a foam generator and associated nozzles, and gas dilution fans. The foam nozzles are positioned adjacent to the trough conveyor and are actuated when a signal is generated by the gas sensor. The foam acts as a fire and explosion break between the shredder and all subsequent areas of the facility.

Abstract: A method and assembly are provided for controlling dust within a solid waste disposal system. The assembly includes a shredder, a conveyor for transporting solid waste material to the shredder, a second conveyor for transporting shredded solid waste material away from the shredder, a dust collector positioned above the second conveyor, air nozzles or the like for agitating the dust collector so that the dust collected therein is deposited upon the second conveyor, and a nozzle assembly for spraying water onto the dust which is dropped by the dust collector onto the second conveyor. The second conveyor is preferably positioned within a dust plenum which confines the airborne dust to an area where it can be effectively trapped.

Abstract: A fuel feeder for feeding refuse fuel to a boiler/incinerator which includes a pair of opposed inclined conveyors defining end boundaries of the conveyor, the conveyors being independently driven so that the fuel required for variable firing rates in plural boilers can independently be supplied.

Abstract: A hopper for use in a dry ash removal system is structured with a front elevational profile which converges from top to bottom while the side elevational profile of same diverges from top to bottom to allow substantially uniform hopper cross-sectional area from top to bottom and thereby reduce incidence of ash bridging within the hopper.

Abstract: Method and system for recovering useful constituents from the bottom ash residue resulting from burning process refuse fuel as well as non-hazardous disposal of fly ash generated during the burning.