Abstract: Embodiments are shown of a floor opening and/or closing system for pellet stoves and other solid-fuel combustion devices with ash-dumping floors. The system uses a cam system wherein a cam member automatically moves to urge the ash-dumping floor open and/or closed, preferably by means of contact with a following arm extending from or connected to the floor. Preferably, the cam member is a crank arm/lever that contacts surfaces of a cam arm in order to cause the cam arm to pivot between two positions. The cam arm is preferably connected to the ash-dumping floor by a connecting rod, so that movement of the crank arm and resultant movement of the cam arm causes movement of the floor. Adaptations may be made for manual control of the floor, for example, by providing a neutral position for the crank member, wherein the cam arm and its connecting rod may be moved independently from, and unhindered by, the crank arm.

Abstract: The reactive waste deactivation facility includes a plurality of deactivation bays each being adapted to accommodate a different type or reactive waste which is to be deactivated therein. The deactivation bays are all enclosed within a common expansion chamber that is designed to collect waste gasses and other wastes resulting from the deactivations that take place in the plurality of bays. In addition, an air pollution control system is provided for cooling and treating the waste gasses before they are vented to the atmosphere. The facility may also include a remotely operable waste feeding system for enabling an operator to safely feed or charge each of the bays. A waste collection and removal system is also provided, which includes an individual, remotely operable, releaseable floor connected to each of the bays.

Abstract: Apparatus for cooling ash exiting from circulating fluidized bed equipment includes an enclosure having a floor, a plurality of walls disposed around the floor and a ceiling. The enclosure also has an inlet and an outlet. The outlet is disposed in one of the walls near to the floor and the apparatus also includes tubing disposed within the enclosure for heat exchange relationship with ash entering the inlet of the ash cooler. In some forms of the invention the floor is planar and is disposed in oblique relationship to a horizontal plane. The outlet may be disposed proximate to the floor at the lowest elevational part thereof. The enclosure may be generally rectangular and may have first and second opposed sides and opposed third and fourth sides. The first and second sides are longer than the third and fourth sides. In some cases the ratio of the length of each of the first and second sides to the length of the third and fourth sides is two or three to one.

Abstract: A dumping system for a kiln floor having a pnematic cylinder to cause a plurality of rows of tray assemblies to move between a closed postion and an open position. A harmonizing bar assembly is connected to the rows of tray assemblies and acts to synchronize movement of the tray assemblies and locks the tray assemblies in a fully clsoed or open position. The linkage between the pneumatic cylinder and the rows of tray assemblies includes a device to adjust the connection with the shaft supporting the tray assemblies.

Abstract: An ashbox for the hearth of a furnace adapted to burn solid fuel, descending along in inclined grate as it burns. The ashbox comprises an extractor chamber having a concave bottom which is part-cylindrical with horizontal generatrices. This chamber is normally filled with water to a level below the upper edge of the chamber. A vertical clinker well terminates at a lower lip below the upper edge of the chamber and is immersed in the water in the chamber. A scraper blade is reciprocated perpendicularly to the generatrices of the concave bottom. An inclined wall merges at its lower end with the concave bottom of the chamber and has an overflow at its upper end above the normal level of the water in the chamber. The arrangement is such that the scraper blade pushes ash up over the overflow lip. The extractor chamber is in two parts and can be opened by relative displacement of these parts to provide vertical access to the ash well.