A furnace for combusting wood comprises a firebox floor in a primary burn chamber of the furnace, where the wood is received for generating a gas therefrom, that is defined by a thermally conductive body of refractory material. The body of refractory material defines an upper support surface arranged to support the wood above or over the same. The body of refractory material also defines, beneath the upper support surface, a duct as part of a secondary burn chamber of the furnace which is arranged (i) to be communicated with the primary burn chamber of the furnace to receive the gas generated by heating of the wood therein and carrying combustible products, and (ii) to convey the gas in a manner supporting combustion of the combustible products carried thereby.

An excess enthalpy combustion device includes a furnace body and a feed mechanism disposed on one side of the furnace body. A flue gas outlet is provided on the furnace body. A wall of the furnace body includes a refractory material layer, an electric heating layer, and an insulating layer that are arranged in sequence from inside to outside. Two horizontal first refractory partitions which are staggered in the vertical direction are provided in an upper layer of the furnace body. Four vertical second refractory partitions which are staggered in the horizontal direction are provided in a lower layer of the furnace body; a third refractory partition parallel to a side wall is provided on the other side of the furnace body opposite to a grate mechanism. The combustion device adopts an electric heater to heat the furnace body when the electric heater is powered on.

A furnace for combusting wood comprises a firebox floor in a primary burn chamber of the furnace, where the wood is received for generating a gas therefrom, that is defined by a thermally conductive body of refractory material. The body of refractory material defines an upper support surface arranged to support the wood above or over the same. The body of refractory material also defines, beneath the upper support surface, a duct as part of a secondary burn chamber of the furnace which is arranged (i) to be communicated with the primary burn chamber of the furnace to receive the gas generated by heating of the wood therein and carrying combustible products, and (ii) to convey the gas in a manner supporting combustion of the combustible products carried thereby.

An excess enthalpy combustion device includes a furnace body and a feed mechanism disposed on one side of the furnace body. A flue gas outlet is provided on the furnace body. A wall of the furnace body includes a refractory material layer, an electric heating layer, and an insulating layer that are arranged in sequence from inside to outside. Two horizontal first refractory partitions which are staggered in the vertical direction are provided in an upper layer of the furnace body. Four vertical second refractory partitions which are staggered in the horizontal direction are provided in a lower layer of the furnace body; a third refractory partition parallel to a side wall is provided on the other side of the furnace body opposite to a grate mechanism. The combustion device adopts an electric heater to heat the furnace body when the electric heater is powered on.

An interchangeable enclosed combustor for combustion of vapors includes: an interchangeable multi-paneled, multi-tiered combustor housing having a plurality of panels coupled together in polygonal form and further arranged in multiple tiers of polygonal forms, thereby to form a vertical, columnar, polygonal stack to flame combust combustible vapors; and a burner manifold disposed within the vertical, columnar, polygonal stack to flame combust combustible vapors to reduce toxic emissions. The burner manifold natural draft burners and nozzles are configured to the ratio of air and fuel to mix to achieve stoichiometric combustion and reduce harmful emissions at a rate >98% destruction efficiency and inlet pressure of <1 oz./in2. The burner manifold includes at least one orifice of a predetermined size through which to draw fuel into a plurality of mixing chambers where air is drawn in through multiple stages of air intake ports that are sized based upon fuel type and pressure.

Example apparatus and methods providing for the improved chemical conversion of the combustible components of a gaseous medium are disclosed. In some examples, the apparatus includes a guiding body that guides the flow of the gaseous medium within a reaction chamber of the apparatus. In some examples, the guiding body of the disclosed apparatus is configured to stabilize a residence period of the gaseous medium in the reaction chamber. In some examples, the guiding body results in a flow path of the gaseous medium within the reaction chamber being optimized and/or maximized, and/or results in a short circuit flow of the gaseous medium in the reaction chamber being suppressed. In some disclosed examples, the guiding body causes at least a portion of the flow path of the gaseous medium within the reaction chamber to take the form of a cyclone flow.

A combustion chamber for an evaporator configured for the production of a syrup, the combustion chamber comprising a combustion chamber frame defining a firebox configured to receive a fuel for combustion, and a modular refractory chamber wall extending along a longitudinal side of the firebox, the modular refractory chamber wall comprising at least one refractory panel removably mountable to the combustion chamber frame to provide a thermal insulation to the combustion chamber.