Fuel gas and oxygen burner
    2.
    发明授权

    公开(公告)号:US11866361B2

    公开(公告)日:2024-01-09

    申请号:US16667692

    申请日:2019-10-29

    CPC classification number: C03B7/065 C03B5/2353 F23D14/22 F23D14/32

    Abstract: A coaxial fuel and oxygen pipe apparatus can include a fuel pipe and an oxygen pipe, wherein the fuel pipe is contained within the oxygen pipe and the oxygen pipe comprises an internal diameter that is continuous without diameter changes along a length of the oxygen pipe. The fuel pipe can include an internal diameter that is continuous without diameter variations along a length of the fuel pipe. A discharge block includes a diverging section and a discharge that forms a final outlet with respect to the fuel pipe and the oxygen pipe. The discharge block is configured with two angles that can facilitate conditions for eliminating recirculation, wherein the two angles are matched to an expansion rate of the products of combustion to maintain a positive pressure throughout a final discharge from the final outlet.

    Low NOx burner with exhaust gas recycle and partial premix

    公开(公告)号:US10533741B2

    公开(公告)日:2020-01-14

    申请号:US15849342

    申请日:2017-12-20

    Abstract: The pre-mix burner assembly includes a jet pump comprising a suction chamber, a flue gas inlet, and a combustion air tube with a combustion air nozzle. The combustion air inlet includes a combustion air tube with a tapered nozzle, and it is connected to a combustion air fan. The flue gas inlet is connected to the suction chamber and the combustion air fan. The suction chamber surrounds the combustion air tube, and it has a jet pump nozzle with a discharge. The assembly includes a fuel gas inlet connected to the combustion air tube. The combustion air and fuel gas mixture exits the combustion air nozzle creating a negative pressure in the suction chamber and drawing flue gas into the suction chamber. The assembly includes a mixing tube positioned downstream of the jet pump discharge, and a burner block connected to an outlet of the mixing tube.

    Fuel nozzle having inner and outer mixing chambers fed with fuel via first and second hole patterns

    公开(公告)号:US12276424B1

    公开(公告)日:2025-04-15

    申请号:US18377776

    申请日:2023-10-07

    Abstract: A fuel nozzle and a method of operating the fuel nozzle, can include a group of chambers located in the fuel nozzle, wherein the chambers can include an inner mixing chamber and an outer mixing chamber. The inner mixing chamber and the outer mixing chamber each can accept air and fuel separately and combine the air and the fuel to form a mixture of the air and the fuel. A first hole pattern and a second hole pattern can be configured in the fuel nozzle, wherein the fuel enters the inner mixing chamber through the first hole pattern and enters the outer mixing chamber through the second hole pattern. Furthermore, an angled discharge can be included with the inner mixing chamber, wherein the angled discharge slows an exit velocity of the mixture of the air and the fuel prior to exiting the fuel nozzle through a discharge end of the fuel nozzle. The group of chambers together with the first hole pattern and the second hole pattern and the angled discharge can facilitate stabilization of a flame at two distinct points downstream of the fuel nozzle depending on the rate of flow of the fuel and the air.

    FUEL NOZZLE HAVING INNER AND OUTER MIXING CHAMBERS FED WITH FUEL VIA FIRST AND SECOND HOLE PATTERNS

    公开(公告)号:US20250116403A1

    公开(公告)日:2025-04-10

    申请号:US18377776

    申请日:2023-10-07

    Abstract: A fuel nozzle and a method of operating the fuel nozzle, can include a group of chambers located in the fuel nozzle, wherein the chambers can include an inner mixing chamber and an outer mixing chamber. The inner mixing chamber and the outer mixing chamber each can accept air and fuel separately and combine the air and the fuel to form a mixture of the air and the fuel. A first hole pattern and a second hole pattern can be configured in the fuel nozzle, wherein the fuel enters the inner mixing chamber through the first hole pattern and enters the outer mixing chamber through the second hole pattern. Furthermore, an angled discharge can be included with the inner mixing chamber, wherein the angled discharge slows an exit velocity of the mixture of the air and the fuel prior to exiting the fuel nozzle through a discharge end of the fuel nozzle. The group of chambers together with the first hole pattern and the second hole pattern and the angled discharge can facilitate stabilization of a flame at two distinct points downstream of the fuel nozzle depending on the rate of flow of the fuel and the air.

    Staged Fuel Burner with Jet Induced Exhaust Gas Recycle

    公开(公告)号:US20190186731A1

    公开(公告)日:2019-06-20

    申请号:US15849354

    申请日:2017-12-20

    CPC classification number: F23B7/007 F23C9/06 F23C9/08 F23D14/02 F23D14/64

    Abstract: The pre-mix burner assembly includes a jet pump comprising a combustion air tube, a flue gas inlet, and a suction chamber. The combustion air tube has an inlet and a tapered nozzle, and it is connected to a combustion gas fan. The flue gas inlet is connected to the suction chamber and the furnace chamber or other flue gas source. The suction chamber surrounds the combustion air tube, and it has a jet pump nozzle with a discharge. The combustion air exiting the combustion air nozzle creates a negative pressure in the suction chamber and draws flue gas into the suction chamber. There is a burner housing positioned downstream of the jet pump discharge. There is a fuel gas inlet connected to a mixing tube in the burner housing, and a burner block connected to the outlet of the burner housing.

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