A nozzle (1) is configured to deliver gas into an incinerator such as a waste incinerator (3). The nozzle includes a nozzle pipe (20) and a swirl generator (21). The swirl generator includes a plurality of angularly spaced vanes (24) that are attached to an inner surface (19) of the pipe. The vanes terminate radially inwardly at respective vane inner surfaces (36). A continuous central passage (25) extends axially between the vane inner surfaces. Utilization of the swirl nozzles in connection with an incinerator provide improved gas mixing and avoid having regions with insufficient air to achieve complete combustion.

A nozzle (1) is configured to deliver gas into an incinerator such as a waste incinerator (3). The nozzle includes a nozzle pipe (20) and a swirl generator (21). The swirl generator includes a plurality of angularly spaced vanes (24) that are attached to an inner surface (19) of the pipe. The vanes terminate radially inwardly at respective vane inner surfaces (36). A continuous central passage (25) extends axially between the vane inner surfaces. Utilization of the swirl nozzles in connection with an incinerator provide improved gas mixing and avoid having regions with insufficient air to achieve complete combustion.

An apparatus capable of monitoring and adjusting an in-furnace combustion condition in real time, having: a furnace having a heating chamber, a combustor, a charging door, an exhaust gas flow port, and an exhaust gas flow pipe, wherein the combustor is used for introducing fuel and/or an oxygen-containing gas into the heating chamber to form a flame, the charging door is used for adding a raw material, and the gas generated by combustion in the heating chamber enters the exhaust gas flow pipe through the exhaust gas flow port; two sensors of the same type arranged at different positions in the exhaust gas flow pipe; and a control device receiving signals of the two sensors and adjusting, according to a difference between the signals, the amount of the fuel and/or the oxygen-containing gas entering the combustor.

An apparatus capable of monitoring and adjusting an in-furnace combustion condition in real time, having: a furnace having a heating chamber, a combustor, a charging door, an exhaust gas flow port, and an exhaust gas flow pipe, wherein the combustor is used for introducing fuel and/or an oxygen-containing gas into the heating chamber to form a flame, the charging door is used for adding a raw material, and the gas generated by combustion in the heating chamber enters the exhaust gas flow pipe through the exhaust gas flow port; two sensors of the same type arranged at different positions in the exhaust gas flow pipe; and a control device receiving signals of the two sensors and adjusting, according to a difference between the signals, the amount of the fuel and/or the oxygen-containing gas entering the combustor.

A method for burning a fuel in a wood stove having a door to a combustion chamber with a base, which combustion chamber is isolated from the air by an exhaust and an intake at which intake there is provided an air regulator having at least primary, secondary and tertiary air intake ducts. The stove is controlled by a burn controller configured to operate between the different operating, i.e. different combustion states.

A method for burning a fuel in a wood stove having a door to a combustion chamber with a base, which combustion chamber is isolated from the air by an exhaust and an intake at which intake there is provided an air regulator having at least primary, secondary and tertiary air intake ducts. The stove is controlled by a burn controller configured to operate between the different operating, i.e. different combustion states.

The present invention relates to a pulverized coal fired boiler with wall-attachment secondary air and grid overfire air. Primary burners including primary air spouts, secondary air spouts and close coupled overfire air spouts arranged at intervals along the height direction of a hearth are arranged on four corners of the hearth. Two-way wall-attachment secondary air spouts and one-way wall-attachment secondary air spouts are arranged from bottom to top in a primary combustion zone where the primary burners are located. One-way wall-attachment secondary air spouts are arranged in a reduction zone between the primary burners and the top overfire air spouts, and grid overfire air spouts are arranged in a burnout zone where the overfire air is supplied. By adopting the pulverized coal fired boiler with wall-attachment secondary air and grid overfire air according to the present invention, the NO amount generated in the hearth is reduced, the NO reduction rate along a flame is improved, the coke burnout rate is improved, less coke which is not burnt out enters into the burnout zone, slagging on the water-cooled wall is reduced, and ultralow emission of NOx may be realized on the premise that the combustion efficiency is not reduced, slag is not agglomerated in the hearth and the flue gas temperature deviation is small.

The present invention relates to a pulverized coal fired boiler with wall-attachment secondary air and grid overfire air. Primary burners including primary air spouts, secondary air spouts and close coupled overfire air spouts arranged at intervals along the height direction of a hearth are arranged on four corners of the hearth. Two-way wall-attachment secondary air spouts and one-way wall-attachment secondary air spouts are arranged from bottom to top in a primary combustion zone where the primary burners are located. One-way wall-attachment secondary air spouts are arranged in a reduction zone between the primary burners and the top overfire air spouts, and grid overfire air spouts are arranged in a burnout zone where the overfire air is supplied. By adopting the pulverized coal fired boiler with wall-attachment secondary air and grid overfire air according to the present invention, the NO amount generated in the hearth is reduced, the NO reduction rate along a flame is improved, the coke burnout rate is improved, less coke which is not burnt out enters into the burnout zone, slagging on the water-cooled wall is reduced, and ultralow emission of NOx may be realized on the premise that the combustion efficiency is not reduced, slag is not agglomerated in the hearth and the flue gas temperature deviation is small.

A solid fuel burning cabinet circular heating appliance achieves improved emissions performance by providing a secondary air combustion path that preheats secondary combustion air. The firebox is selectively insulated such that areas of the firebox that do not preheat combustion air retain heat in the firebox while areas of the firebox that transfer heat into the combustion air transfer heat through the firebox into the incoming combustion air. The exhaust air path from the firebox to a chimney is also uninsulated to allow relatively quick heat transfer into a room in which the appliance is installed

Smelting metalliferous feed material process forming molten metal in smelting apparatus including smelt cyclone above and communicating with smelting vessel to contain molten metal and slag bath, including: partially reducing and melting feed material in smelt cyclone, allowing the molten partially reduced feed material flow downwardly into vessel, supplying oxygen-containing gas and carbonaceous material to vessel, smelting molten partially reduced feed material in molten metal and slag bath in vessel forming molten metal discharged from vessel and reaction products projected upwardly from molten bath, at least partially combusting combustible materials in reaction products in vessel space above molten bath, supplying oxygen-containing gas to smelt cyclone. Further combusting reaction products in smelt cyclone, discharging from smelt cyclone offgas including reaction products, supplying oxygen-containing gas into offgas duct upstream high temperature section combusting remaining offgas combustible materials while sufficiently hot for safe ignition and avoiding downstream burner-managed incineration.