A fuel swirler with anti-rotation features is provided. A swirler assembly may comprise a swirler, a guide plate, and a retaining ring. The swirler, the guide plate, and/or the retaining ring may comprise recessions configured to receive a retaining element. The retaining element may be configured to interface with the recessions to create an interference in the swirler assembly. The interference may at least partially resist rotation of the guide plate with respect to the swirler.

A fuel swirler with anti-rotation features is provided. A swirler assembly may comprise a swirler, a guide plate, and a retaining ring. The swirler, the guide plate, and/or the retaining ring may comprise recessions configured to receive a retaining element. The retaining element may be configured to interface with the recessions to create an interference in the swirler assembly. The interference may at least partially resist rotation of the guide plate with respect to the swirler.

A burner assembly (100) for flaring low calorific gases, such as methane with high carbon dioxide content, may be configured to provide a gradual decrease in flow velocity. The burner assembly (100) may include a conical deflector (140) that creates a relatively large recirculation zone (154) downstream of the deflector (140), thereby to stabilize fluid flow. A swirl inducing structure positioned in a final stage of the burner assembly (100) further stabilizes the fluid flow and flame at different gas flow rates.

An evaporator burner (100) for a mobile heating unit which is operated using liquid fuel is provided, said evaporator burner having: a mixture preparation region (2) for the mixing of fuel with combustion air to form a fuel-air mixture; a fuel feed (1) for feeding liquid fuel to the mixture preparation region (2); a combustion air feed (B) for feeding combustion air to the mixture preparation region (2); at least one evaporation surface (8) to which the liquid fuel is fed and which serves for the evaporation of the liquid fuel; a conversion region (3), positioned downstream of the mixture preparation region (2) in terms of flow, for the conversion of the fuel-air mixture into combustion exhaust gases (A) with a release of heat; and an exhaust-gas recirculation means (10; 210) for the recirculation of combustion exhaust gases (A) into the mixture preparation region (2).

The present application relates to a burner for a shaft melting furnace, in particular for a copper shaft melting furnace, comprising a first chamber with an inlet opening, via which an oxygen-containing gas can be supplied to the burner, and an outlet opening, which is arranged at a distal end of a conically tapering sub-portion of the first chamber; a second chamber, which is connected to the conical sub-portion of the first chamber and which has a burner nozzle; a combustion gas line, which opens into the first chamber and via which a combustion gas can be supplied to the burner; and a mixing nozzle, which is arranged in the outlet opening of the first chamber and which has a mixing chamber via which the oxygen-containing gas and the combustion gas can be mixed to form a combustion gas mixture.

A vortex recirculating combustion head for a burner, including: a housing having a through-bore, an upstream end, and a downstream end, the upstream and downstream ends arranged at opposite sides of the through-bore, the housing configured to receive combustion air; a primary fuel inlet arranged adjacent to the upstream end of the housing configured to introduce a primary fuel stream into the housing; a secondary fuel inlet arranged downstream of the primary fuel inlet configured to introduce a secondary fuel stream into the housing; a flame retention head including a diffuser plate secured to the downstream end of the housing, the diffuser plate including a plurality of openings, a plurality of fins, and a ring; and, an extension member secured to an exterior surface of the flame retention head.

The invention relates to an evaporator burner (1; 101) for a mobile heating device, comprising: a combustion chamber (3), a fuel feed line (4) for feeding liquid fuel, and an evaporator for evaporating fed fuel. The evaporator has a support body (6; 106) made of a nonporous material, comprising a fuel preparation surface (6a; 106a) which faces the combustion chamber (3) and which comes into contact with the liquid fuel. A surface structuring (11) with a plurality of depressions (11a) and elevations (11b) is introduced into the fuel preparation surface (6a; 106a) and/or into a support body (6; 106) rear face (6b; 106b) facing away from the fuel preparation surface.

A fuel swirler with anti-rotation features is provided. A swirler assembly may comprise a swirler, a guide plate, and a retaining ring. The swirler, the guide plate, and/or the retaining ring may comprise recessions configured to receive a retaining element. The retaining element may be configured to interface with the recessions to create an interference in the swirler assembly. The interference may at least partially resist rotation of the guide plate with respect to the swirler.

The invention relates to a central burner for multi-fuel multiple lance burner systems having a central lance with an inner pipe and an outer pipe. The inner pipe and the outer pipe form an annular clearance duct. A plurality of outer lances are arranged around the central lance. A funnel-like mixing device is provided in the extension of the annular clearance duct in the region of the end of the inner pipe. This funnel-like mixing device has openings in its wall for combustion media to flow through. The outer lances each have a nozzle which has openings along the lateral circumferential area, said openings being arranged asymmetrically.

Disclosed herein are methods and systems for burning gaseous ammonia, including receiving a oxidizer gas into a chamber body such that the oxidizer gas generally flows in direction that extends along a longitudinal axis of the chamber body; introducing gaseous ammonia into the chamber body such that swirl is introduced into the gaseous ammonia; mixing the oxidizer gas and the gaseous ammonia to form a combustion mixture; igniting the combustion mixture; and combusting the combustion mixture for a duration such that the gaseous ammonia is converted to combustion products.