A direct flame furnace burner unit for furnaces for the thermo-chemical treatment of steel strips in continuous hot-dip galvanizing plants includes a burner with a combustion head provided with a combustion chamber having an outlet opening of the combustion flame, and a body to which the combustion head is fixed. The body includes a first chamber which is in communication with the combustion chamber, a first lance for the injection of a fuel into the combustion chamber, a mixing chamber provided with at least a first inlet and a second inlet opening which is connectable to a second supply source, at least a second lance for the injection of the mixture into the combustion chamber. The burner is operable in two distinct operating modes, a diffusive flame combustion mode and a premixed flame combustion mode.

A direct flame furnace burner unit for furnaces for the thermo-chemical treatment of steel strips in continuous hot-dip galvanizing plants includes a burner with a combustion head provided with a combustion chamber having an outlet opening of the combustion flame, and a body to which the combustion head is fixed. The body includes a first chamber which is in communication with the combustion chamber, a first lance for the injection of a fuel into the combustion chamber, a mixing chamber provided with at least a first inlet and a second inlet opening which is connectable to a second supply source, at least a second lance for the injection of the mixture into the combustion chamber. The burner is operable in two distinct operating modes, a diffusive flame combustion mode and a premixed flame combustion mode.

A burner comprises: at least one mixing tube extending inside a fuel plenum and having an interior configured to be supplied with an air; and a plurality of fuel injection holes for injecting a fuel supplied to the fuel plenum into the interior of the at least one mixing tube. When the at least one mixing tube is viewed in an axial direction of the mixing tube, a central axis of each of the plurality of fuel injection holes is oblique in a same direction with respect to a circumferential direction of the mixing tube, to a radial direction of the mixing tube.

A burner comprises: at least one mixing tube extending inside a fuel plenum and having an interior configured to be supplied with an air; and a plurality of fuel injection holes for injecting a fuel supplied to the fuel plenum into the interior of the at least one mixing tube. When the at least one mixing tube is viewed in an axial direction of the mixing tube, a central axis of each of the plurality of fuel injection holes is oblique in a same direction with respect to a circumferential direction of the mixing tube, to a radial direction of the mixing tube.

An apparatus configured to perform a prescribed burn of vegetative ground fuel comprises a movable platform configured to traverse ground that contains the vegetative ground fuel, and a burn chamber disposed on the movable platform. An ignition source is disposed in the burn chamber and configured to ignite vegetative ground fuel within a prescribed burn region of the ground. A containment arrangement is situated relative to the burn chamber and configured to confine burning of the vegetative ground fuel to the prescribed burn region. A discharge apparatus is positioned relative to the burn chamber and configured to expel residual effluent from the burn chamber. An extinguisher system can be included to extinguish residual flames and embers. A smoke filtration system can be included to filter residual effluent expelled from the burn chamber.

An apparatus configured to perform a prescribed burn of vegetative ground fuel comprises a movable platform configured to traverse ground that contains the vegetative ground fuel, and a burn chamber disposed on the movable platform. An ignition source is disposed in the burn chamber and configured to ignite vegetative ground fuel within a prescribed burn region of the ground. A containment arrangement is situated relative to the burn chamber and configured to confine burning of the vegetative ground fuel to the prescribed burn region. A discharge apparatus is positioned relative to the burn chamber and configured to expel residual effluent from the burn chamber. An extinguisher system can be included to extinguish residual flames and embers. A smoke filtration system can be included to filter residual effluent expelled from the burn chamber.

A method and device heat an object to be heated by a flame which is produced by supplying a fuel fluid and a combustion supporting gas to a burner as a heat, source. A temperature rising rate is increased by gradually increasing an oxygen concentration in the combustion supporting gas supplied to the burner and a device for heating an object to be heated including a burner for heating the object to be heated. A flow rate control unit controls a flow rate of a fuel fluid and a combustion supporting gas. A calculation unit transmits combustion information of the burner to the flow rate control unit, and the flow rate control unit increases a temperature rising rate of the object to be heated by increasing the oxygen concentration in the combustion supporting gas supplied to the burner.

A burner includes a main flange, an oxidant inlet coupled to the main flange, a combustion fuel inlet coupled to the main flange, a nozzle pipe coupled to the main flange, an outer pipe coupled to the main flange, and a diffuser coupled to the nozzle pipe and the outer pipe. The nozzle pipe has an inner volume in fluid communication with the oxidant inlet. The outer pipe is around the nozzle pipe. An annular volume is at least partially defined by the main flange, the nozzle pipe, the outer pipe, and the diffuser. The annular volume is in fluid communication with the combustion fuel inlet. The diffuser may be flat.

A burner includes a main flange, an oxidant inlet coupled to the main flange, a combustion fuel inlet coupled to the main flange, a nozzle pipe coupled to the main flange, an outer pipe coupled to the main flange, and a diffuser coupled to the nozzle pipe and the outer pipe. The nozzle pipe has an inner volume in fluid communication with the oxidant inlet. The outer pipe is around the nozzle pipe. An annular volume is at least partially defined by the main flange, the nozzle pipe, the outer pipe, and the diffuser. The annular volume is in fluid communication with the combustion fuel inlet. The diffuser may be flat.

A radiant tube burner, wherein an opening cross section of the tube is virtually divided into four areas with two straight lines as boundaries, the two straight lines being obtained by tilting a minor axis of the oval, which is a shape of the opening cross section, by ±45° with a center of the oval as a center, and a flow rate of primary combustion air injected from primary combustion air nozzles located in the areas containing the minor axis of the oval of the virtually divided four areas is lower than a flow rate of the primary combustion air injected from the primary combustion air nozzles located in the areas not containing the minor axis of the oval the four areas.