The present disclosure is directed to systems and methods for low-CO.sub.2 emission combustion of liquid fuel with a gas-assisted liquid fuel oxygen reactor. The system comprises an atomizer that sprays fuel and CO.sub.2 into an evaporation zone, where the fuel and CO.sub.2 is heated into a vaporized form. The system comprises a reaction zone that receives the vaporized fuel and CO.sub.2. The system includes an air vessel having an air stream, and a heating vessel adjacent to the air vessel that transfers heat to the air vessel. The system comprises an ion transport membrane in flow communication with the air vessel and reaction zone. The ion transport membrane receives O.sub.2 permeating from the air stream and transfers the O.sub.2 into the reaction zone resulting in combustion of fuel. The combustion produces heat and creates CO.sub.2 exhaust gases that are recirculated in the system limiting emission of CO.sub.2.

The present disclosure is directed to systems and methods for low-CO.sub.2 emission combustion of liquid fuel with a gas-assisted liquid fuel oxygen reactor. The system comprises an atomizer that sprays fuel and CO.sub.2 into an evaporation zone, where the fuel and CO.sub.2 is heated into a vaporized form. The system comprises a reaction zone that receives the vaporized fuel and CO.sub.2. The system includes an air vessel having an air stream, and a heating vessel adjacent to the air vessel that transfers heat to the air vessel. The system comprises an ion transport membrane in flow communication with the air vessel and reaction zone. The ion transport membrane receives O.sub.2 permeating from the air stream and transfers the O.sub.2 into the reaction zone resulting in combustion of fuel. The combustion produces heat and creates CO.sub.2 exhaust gases that are recirculated in the system limiting emission of CO.sub.2.

A combustion system comprises a discharge nozzle with concentric air and fuel orifices. A fuel conduit is coupled to each fuel orifice while an air conduit is coupled to each air orifice. The fuel and air only mixing with one another upon discharge. A supplemental air source supplies supplement air for combustion. An air deflector disk supports the discharge nozzle and a cylindrical blast tube surrounds the air deflector sleeve and the air deflector disk while an outlet end of the cylindrical blast tube supports a flame retention head. The deflector disk permits some combustion air to flow into the combustion chamber while redirecting a remaining portion of the supplement air. The flame retention head permits some of the supplement air to discharge into a burner box while redirecting the remaining supplement air radially inward through openings in the air deflector sleeve to assist with combustion of the fuel mixture.

The invention provides a burner configured for use with a dryer for drying aggregates, the burner comprising: a burner chamber (3) is which is mounted a fuel-atomizing burner nozzle (3.32) and means for conveying fuel to the burner nozzle; means providing a flow of air through the burner chamber and into the combustion chamber; a combustion chamber (4) in which the fuel is burnt; the combustion chamber (4) having an opening at an upstream end thereof communicating with the burner chamber (3) and an opening at a downstream end thereof for passing combustion gases and heated air into a drying chamber of the dryer; the burner nozzle (3.32) being arranged to direct a flow of atomized fuel into the combustion chamber; a first airflow modifier device (3.11) mounted in or across the opening at the upstream end of the combustion chamber such that there is a gap constituting an air escape channel around a periphery of the first airflow modifier device, the first airflow modifier device (4.3) having one or more windows therein through which a flow of air provided by the fan is directed into the combustion chamber to mix with atomized fuel from the burner nozzle, the one or more windows being configured to impart turbulence to the airflow; and a second airflow modifier device (4.3) comprising one or more air deflector elements (4.31) mounted peripherally about the opening at the upstream end of the combustion chamber, the second airflow modifier device (4.3) being arranged to impart turbulence to excess air passing through the said air escape channel.

A fuel combustion system comprises a discharge nozzle with concentric fuel and air orifices. A fuel conduit is coupled to each fuel orifice for supplying liquid fuel thereto. An air conduit is coupled to each air orifice for supplying air thereto. The fuel and the pressurized air only mixing with one another, upon being discharged from the respective fuel and air orifices, to form a fuel mixture. A supplemental air source supplies supplement air to facilitate combustion. An air deflector sleeve at least partially surrounds and accommodates the at least one discharge nozzle and a cylindrical blast tube surrounding the air deflector sleeve and an outlet end of the cylindrical blast tube supports a flame retention head. The flame retention head redirects the supplement air radially inward, through openings in the air deflector sleeve and the flame retention head, to assist with combustion of the fuel mixture.

The present disclosure relates to a device for heating a medium, including a burner unit and a flame tube, wherein the burner unit generates flue gas, wherein the flame tube has a flue gas inlet, a longitudinal axis, a casing extending along the longitudinal axis, and an end face opposite the flue gas inlet, wherein the flue gas passes from the burner unit into the flame tube via the flue gas inlet, wherein a plurality of recesses are located in the casing, and wherein the recesses have different dimensions and/or are distributed asymmetrically on the casing. The longitudinal axis is in a central plane, wherein a first side and a second side of the casing are formed by the central plane, and wherein recesses on the first side have smaller dimensions than recesses on the second side.