Abstract: A burner using biomass combustibles, namely pellet fuel, for a maple syrup evaporator. Compared to wood or oil burning heat sources, pellet fuel is less costly, burns more efficiently and generates the heat necessary to properly evaporate maple sap. The burner includes a burn pit defining a plurality of holes for allowing air to communicate between a combustion chamber and a primary air plenum formed between a base and an underside of the burn pit. An air supply conduit supplies air supply to the primary air plenum. A fuel conduit in communication with the combustion chamber supplies the pellet fuel for combustion within said burn pit. A secondary plenum in pneumatic communication with the primary air plenum receives and cools a portion of the primary air supply. A plurality of injectors in communication with the secondary plenum inject the cooled air into the combustion chamber.

Abstract: A resources reclaiming apparatus includes a furnace having an interior spacer. The spacer has one end forming an arched section with a distal end tilted upwards forming a sloped section extruded to form a plane spacer having a firing port therein, thereby dividing the furnace into first and second combustion chambers. The furnace has intake ports located on the right side abutting an upper end of the furnace and air ducts atop intake ports. The air ducts have one end extending into an end of a scattering and dispensing chamber. Materials convey to the scattering and dispensing chamber and dispense to the combustion chamber of the furnace through the air ducts to burn at high temperatures for molting. Fire channels to the arched and sloped sections of the spacer directed upwards to circulate and lengthen burning period. Thereby hazardous materials decompose and vitrify for storing.

Abstract: A waste treatment furnace includes a first waste treatment chamber with a first burner chamber communicating therewith, and a second waste treatment chamber with a second burner chamber communicating therewith. A common bottom wall is positioned under the first and second waste treatment chambers which is inclined downwardly from the first chamber to the second chamber to facilitate transfer of waste. Each burner chamber includes a burner and a plurality of protuberances disposed across its inner surface. The protuberances effectively reflect heat from the first and second burners so that the heater air in the first and second burner chambers is homogenized.

Abstract: The secondary air jets (11) that are arranged within the combustion space (5) consist of an outer casing (12), an inner casing (13), and a flange (14) that connects the two casings to each other, the flange (14) crossing the inner casing (13) and being rigidly connected with this, whereas the outer casing (12) is so connected to the flange that is of greater diameter than the outer casing (12) that slot-type jets (15) are left between the face side of the outer casing (12) and the flange (14), these jets making it possible to expel air parallel to the defining wall and essentially perpendicular to the axis of the jets.

Abstract: The present invention relates to a gasification burner for heating apparatus (boiler, hot air generator or the like) which uses solid fuel. The gasification burner is placed generally at the center of the hearth of the heating apparatus to achieve gasification of the solid fuel before its transformation into charcoal or coals.

Abstract: A solid fuel furnace having an oscillating grate plate solid fuel burner therein wherein the grate plates are in a stepped arrangement and every other plate moves together, in an opposite direction from the adjacent plates so that the solid fuel is kept moving down the step grate positively. Additionally, the solid fuel burner is mounted in a furnace housing which is designed to utilize the hot combustion gases to preheat incoming or makeup air for a blower used for supply air flow for heating. Baffles are used to provide a substantially elongated path for the combustion gases to ensure adequate heat exchange in a compact space.

Abstract: The underfeed stoker has a retort (6) which is located at a height `h`, an arch having a minimum width `w`. The ratio of the minimum width `w` to the height `h` is greater than 1.5 and less than 2.

Abstract: Combustion and heating equipment includes a body with an underfeed stoker located in the lower part thereof. A jacket surrounds the body to define a heating space, different parts of which are interconnected by triangular ducts disposed in the gas pass. A screwfeeder is provided for the retort of the stoker and extends right through the body terminating in an inlet 36. A mobile hopper has an outlet for registry with the inlet and is refillable and interchangeable.

Abstract: The incinerator comprises a dome-shaped furnace containing a fire brick retaining wall, which has an upper edge spaced just beneath the curved ceiling of the furnace, and which divides the furnace into a large primary combustion chamber, and a smaller secondary combustion chamber. A plurality of perforated air-supply tubes are mounted in the primary chamber above a pathological hearth, which is mounted adjacent the bottom of the primary chamber to extend horizontally between the retaining wall and one side of the furnace. Combustion by-products created in the primary chamber pass over the top of the retaining wall, and then downwardly through the secondary combustion chamber and through an opening in the bottom thereof to one side of a discharge duct, which extends beneath the hearth to communicate with a smoke stack that is mounted at the back of a furnace.