The present disclosure relates to a liquid fuel self-sustaining combustion burner for flame synthesis, including a swirl-flow cylinder and a stable combustion cylinder. A swirl-flow plate is disposed at an open end of the swirl-flow cylinder and defines swirl-flow outlets. A tangential inlet tube is mounted on the swirl-flow cylinder and in fluid communication with the swirl-flow chamber. An open end of the swirl-flow cylinder extends into the stable combustion chamber. The fuel can be atomized by an atomizer and sprayed into the stable combustion chamber for combustion. Air introduced from the tangential inlet tube can flow into the swirl-flow chamber and advance spirally around the central stabilizing column to reach the swirl-flow plate. The airflow is partially injected into the stable combustion chamber through the swirl-flow outlets, and then continues to spirally advance. An atomizing nozzle of the atomizer is located inside the swirling airflow.

The invention provides a burner apparatus comprising: a combustion chamber (8); a fuel dispenser (15, 16) arranged to direct a flow of fuel into the combustion chamber (8), the fuel dispenser (15, 16) being located at an upstream end of the combustion chamber and being connected or connectable to a fuel supply; an airflow modifier device (10), located at an upstream end of the combustion chamber, for controlling a primary air flow into the combustion chamber (8), the airflow modifier device (10) being configured to facilitate mixing of the air with the fuel to give a mixture for combustion; and one or more secondary air channels (24) for directing a cooling secondary air flow onto a stream of combustion products (e.g. flame) as the stream of combustion products emerges from a downstream end of the combustion chamber.

Also provided are a dryer apparatus comprising a burner apparatus as described herein and a method of drying aggregates using a burner apparatus as described herein.

Generally described, one or more aspects of the present disclosure relate to a rigid lance of a boiler burner device. The rigid lance includes a first tube having a first diameter, a second tube having a second diameter larger than the first diameter, a hexagonal bar connecting the first tube with the second tube, and a sealing gasket positioned between the first tube and the second tube.

A multi-tube burner system for efficient mixing of fuel and air for combustion is disclosed. The multi-tube burner system includes an air supply plenum, a multi-tube burner, and a combustor. Further, the multi-tube burner includes a set of tubes including the air supply section to receive combustion air and supply the received combustion air to a mixing section. Furthermore, the multi-tube burner includes a set of fuel pipes to receive fuel from a set of fuel inlets and supply the received fuel to a set of fuel plenums. Furthermore, a pair of fuel receiving channels receive the fuel from the set of fuel plenums and a fuel injector pin injects the received fuel from the pair of fuel receiving channels to the mixing section. Further, a set of mixing holes allow egression of the combustion air and the fuel mixture from the mixing section to the combustor.

A burner includes an atomizing chamber, a flame tube in front of the atomizing chamber adapted to direct combusting fuel introduced by the atomizing chamber along an interior of the flame tube, and a controller. The controller is programmed to independently control rate of fuel flow to the atomizing chamber, rate of atomizing air flow to the atomizing chamber, and rate of combustion air to the flame tub. The controller is also programmed to perform operations including regulating, based on output of a gas sensor, at least the rate of combustion air to the flame tube to substantially maintain a first predetermined amount of excess air in the flame tube.