The present disclosure describes an assembly configured to mitigate the harmful effects of smelt fouling, airflow interference, and operator exposure to hot air from the furnace and wind box through use of an extractable startup burner and an isolation chamber engaged to a windbox. The present disclosure also describes a method for safely extracting a startup burner from an active recovery boiler as has method for inserting an extractable startup burner into a recovery boiler during operation.

A multi-flame burner is disclosed with burner heads, which are set up to generate at least one burner flame directed along a respective flame axis when supplied with a fuel, wherein the flame axes of respectively adjacent burner heads are inclined relative to each other. A method for preheating a workpiece, in particular a pipe or large-diameter pipe, using a multi-flame burner is also disclosed.

An ironing apparatus (100) comprises a rotating cylinder (11) and a burner assembly (2) comprising a main body (20) in which a passage (21) for a mixture of air and gas is defined. The main body comprises an outlet surface (22) in which a plurality of holes (220) are defined, through which the mixture of air and gas exits from the passage, wherein the passage is elongate-shaped, extends in a longitudinal direction inside said rotating cylinder and has a decreasing cross section along the longitudinal direction (x).

A gas-fired burner for a drying drum of an asphalt mixing plant, such that the burner preferably has a central primary air duct (6), which opens into a combustion zone (4) via a swirl body (2). The burner has gas supply openings (9) in the area of the circumferential boundaries of the swirl body (2) for supplying fuel gas to the primary air for firing the burner. It has been shown that a stable and well-developed flame can be produced over a very large load range with such burners according to the disclosure.

A pressurized cavity is provided around at least a portion or all of a regenerator, within which gas such as flue gas is maintained at a pressure in excess of the pressure within the regenerator, to protect against leakage of gas through the walls of the regenerator.

A thermo-photovoltaic system including an infrared radiation emitter including a body including a first external surface and a second external surface, the first and second external surfaces being distinct, the first external surface facing a concentrator for receiving a concentrated solar radiation, the second external surface facing a thermo-photovoltaic cell, and the body further including at least one gas and/or liquid combustion chamber therein, and an igniter is provided for causing combustion in the combustion chamber.

A well test burner system has a plurality of burner nozzles supported by a support structure. Each burner nozzle has an air inlet, a well product inlet and an air/well product mixture outlet. At least one of the burner nozzles is supported to pivot relative to the support structure while the burner nozzle is operating to expel air/well product mixture.

A burner (1) comprises a front wall (2) with an exchanger opening (4) for the passage of a heat exchanger (14), a rear wall (5) with a fume discharge opening (7), a tubular side wall (8), a tubular diffuser wall (9) within the side wall (8), an annular distribution chamber (12) formed between the side wall (8), a combustion chamber (13) formed within the diffuser wall (9) and suitable for the insertion of the heat exchanger (14), wherein the rear wall (5) comprises a cooling interspace in flow communication with the gas supply line of the burner.

A heat gun includes a head portion defining a flow passage and including a windshield disposed at an outlet end of the flow passage. The windshield includes a first partition and a shield. The first partition has opposing first and second sides. The first side aligns a first phantom line. The shield includes a first, second, and third through hole. The first through hole is located on a right side of the first phantom line. The second through hole is located on a left side of the first phantom line. The third hole includes a portion located on the right side of the first phantom line and a portion located on the left side of the first phantom line.

A heating control system including an air circulation fan, a heating unit, a memory, and a microprocessor. The microprocessor is configured to operate the air circulation fan at a first speed and the heating unit in a first configuration to achieve a first temperature rise where less than all of the burners are active. The microprocessor is further configured to compare the first temperature rise to a first temperature rise threshold and transition the air circulation fan to a second speed to achieve a second temperature rise when the first temperature rise is less than the first temperature rise threshold. The microprocessor is further configured to compare the second temperature rise to a second temperature rise threshold and transition the air circulation fan to a third speed when the second temperature rise is greater than the second temperature rise threshold.