To improve the efficiency of recuperator burners, preferably to over 80%, a recuperator burner (10) is equipped with an auxiliary heat exchanger (26) which surrounds the recuperator (22), wherein both the recuperator and the auxiliary heat exchanger are preferably formed as purely counterdirectional-flow heat exchangers, wherein the auxiliary heat exchanger (26) has the air supplied to it on the side facing toward the furnace wall (11). The housing (15) around the auxiliary heat exchanger (26) can be cooled with cool air from the inside. In one configuration, the air is initially conducted to a flange cooler (45) to protect the region of the flange (16) against the exhaust-gas temperature. For example, the ceramic recuperator pipe (26) is resiliently pressed, and sealed off, against an outlet-side surface (35) of the auxiliary heat exchanger (26), which preferably has gap-like air ducts (39) formed in flattened pipes (40).

To improve the efficiency of recuperator burners, preferably to over 80%, a recuperator burner (10) is equipped with an auxiliary heat exchanger (26) which surrounds the recuperator (22), wherein both the recuperator and the auxiliary heat exchanger are preferably formed as purely counterdirectional-flow heat exchangers, wherein the auxiliary heat exchanger (26) has the air supplied to it on the side facing toward the furnace wall (11). The housing (15) around the auxiliary heat exchanger (26) can be cooled with cool air from the inside. In one configuration, the air is initially conducted to a flange cooler (45) to protect the region of the flange (16) against the exhaust-gas temperature. For example, the ceramic recuperator pipe (26) is resiliently pressed, and sealed off, against an outlet-side surface (35) of the auxiliary heat exchanger (26), which preferably has gap-like air ducts (39) formed in flattened pipes (40).

Burner (1) with fumes recirculation comprising a first supply duct (2) for supplying fuel, having at least a first inlet opening (3) and a first outlet opening (4) and a second supply duct (5) for supplying a comburent, having at least a second inlet opening (6) and a second outlet opening (7). The burner (1) further comprises suction means (9) configured to move said at least an amount of comburent from the second inlet opening (6) to the second outlet opening (7) and a fumes return duct (10) for fumes generated by the combustion of the flame and configured to promote a re-introduction of the fumes in the burner (1). In particular, the fumes return duct (10) has a third fumes inlet opening (11) arranged at the head (8) of the burner (1) and a third outlet opening (12) placed in fluid communication with the second inlet opening (6) for the comburent to promote an at least partial re-introduction of the combustion fumes in the second supply duct (5). Furthermore, the suction means (9) is configured to promote a movement of the combustion fumes from the fumes return duct (10) to the second supply duct (5).

The object of the present invention is to provide a high-temperature oxygen generation device and a high-temperature oxygen generation method which can efficiently supply preheated high-temperature oxygen gas regardless of pressure conditions from normal pressure to high pressure, without requiring upsizing or expansion of the equipment, and the present invention provides a high-temperature oxygen generation device (10) in which a high-temperature gas (G4) and an oxygen gas (G3) to be heated are mixed to generate a high-temperature oxygen gas (G5), wherein the high-temperature oxygen generation device (10) includes a burner (1) which generates the high-temperature gas (G4), and a preheating chamber (7) which is provided on the downstream side of the burner (1) and mixes the high-temperature gas (G4) and the oxygen gas (G3) to be heated, and the burner (1) includes a combustion chamber (5) which forms a flame by a fuel gas (G1) and an oxygen gas (G2) for combustion, a fuel flow path (2) which supplies the fuel gas (G1) into the combustion chamber (5), a first oxygen flow path (3) and a second oxygen flow path (4) which supply the oxygen gas (G2) for combustion into the combustion chamber (5), and a flow path (6) for oxygen to be heated which communicates with the preheating chamber (7), and supplies the oxygen gas (G3) to be heated toward the preheating chamber (7).

The object of the present invention is to provide a high-temperature oxygen generation device and a high-temperature oxygen generation method which can efficiently supply preheated high-temperature oxygen gas regardless of pressure conditions from normal pressure to high pressure, without requiring upsizing or expansion of the equipment, and the present invention provides a high-temperature oxygen generation device (10) in which a high-temperature gas (G4) and an oxygen gas (G3) to be heated are mixed to generate a high-temperature oxygen gas (G5), wherein the high-temperature oxygen generation device (10) includes a burner (1) which generates the high-temperature gas (G4), and a preheating chamber (7) which is provided on the downstream side of the burner (1) and mixes the high-temperature gas (G4) and the oxygen gas (G3) to be heated, and the burner (1) includes a combustion chamber (5) which forms a flame by a fuel gas (G1) and an oxygen gas (G2) for combustion, a fuel flow path (2) which supplies the fuel gas (G1) into the combustion chamber (5), a first oxygen flow path (3) and a second oxygen flow path (4) which supply the oxygen gas (G2) for combustion into the combustion chamber (5), and a flow path (6) for oxygen to be heated which communicates with the preheating chamber (7), and supplies the oxygen gas (G3) to be heated toward the preheating chamber (7).

An apparatus includes a tuyere, a plasma torch positioned to inject hot gas into the tuyere, and a plurality of nozzles configured to inject a combustible material into the tuyere for combustion of the combustible material within the tuyere. The apparatus can be used to practice a method including: injecting a combustible material into a plurality of tuyeres in a wall of a reactor vessel, using a plasma torch to inject hot gas into the tuyeres to ignite the combustible material, and directing heat from combustion of the combustible material into the reactor vessel to preheat the reactor vessel.

An apparatus includes a tuyere, a plasma torch positioned to inject hot gas into the tuyere, and a plurality of nozzles configured to inject a combustible material into the tuyere for combustion of the combustible material within the tuyere. The apparatus can be used to practice a method including: injecting a combustible material into a plurality of tuyeres in a wall of a reactor vessel, using a plasma torch to inject hot gas into the tuyeres to ignite the combustible material, and directing heat from combustion of the combustible material into the reactor vessel to preheat the reactor vessel.

A heater having a planar metal sheet with a first and second surface. A metal oxide layer is formed on the first surface of the sheet and a combustion catalyst is impregnated into the metal oxide layer. A source of fuel and air is then supplied to the first side of the metal sheet resulting in catalytic combustion which heats the metal sheet. The metal sheet can serve as a cooking stove.

An apparatus includes a tuyere including a tubular chamber having an internal wall defined by a mandrel; a plasma torch assembly including a torch positioned to inject hot gas into the tuyere and having a tubular structure that extends along an axis of the chamber; the plasma torch assembly further including a shroud head configured to inject shroud gas between the internal wall of the chamber and the tubular structure of the torch; a pipe positioned around at least a portion of the mandrel forming a plenum at least partially encircling the mandrel; and a plurality of nozzles in the chamber internal wall configured to inject a combustible material from the plenum to a space between the internal wall of the chamber and the tubular structure of the torch.

A volatile organic compound burner includes a pre-heating bushing, a burner body, a porous medium and an ignition electric power source. The volatile organic compound is low-enthalpy fuel. The volatile organic compound burner functions in the same way as a combustion chamber of an internal combustion engine to use a combustible volatile organic compound as fuel and introduce the combustible volatile organic compound into the combustion chamber, adjust timely the fuel mixing ratio in the combustion chamber according to the temperature required for the oxidation of the volatile organic compound in the volatile organic compound burner, and ignite the volatile organic compound in the combustion chamber with an electronic ignitor. The volatile organic compound burner is structurally simple and widely applicable to simulation of the environment of oxidation of the volatile organic compound, has high cost to performance ratio, and reduces fuel cost and emission of air pollutants.