A burner for an exhaust aftertreatment system is provided that includes a nozzle assembly having a body and a heating element. The body may include first and second cavities, a fuel inlet passage and an air inlet passage. The first cavity may receive portion of the heating element and may be in fluid communication with the fuel inlet passage and a fuel discharge passage such that fuel from the fuel inlet passage is heated in the first cavity by the heating element and discharged from the first cavity through the fuel discharge passage. The second cavity may be in fluid communication with the air inlet passage and an air discharge passage. The first and second cavities may be fluidly isolated from each other and may supply fuel and air, respectively, to an exit aperture disposed downstream of the fuel discharge aperture and the air discharge aperture.

Burner with air-assisted fuel nozzle and vaporizing ignition system

An exhaust aftertreatment system may include a first housing and a burner. The first housing may include first and second chambers. The first chamber may include an exhaust gas inlet receiving exhaust gas from an engine. The second chamber may receive exhaust gas from the first chamber and may include an exhaust gas outlet. The burner may include a second housing and a combustion chamber disposed within the second housing. The second housing may be at least partially disposed within the first chamber. The burner may supply heated gas to the second chamber. The heated gas within the burner may be fluidly isolated from exhaust gas in the first chamber. The second housing may be in a heat transfer relationship with exhaust gas in the first chamber.

Exhaust treatment burner and mixer system

A burner for an exhaust aftertreatment system may include a housing assembly and an ignition device. The housing assembly may include an inner shell surrounded by intermediate and outer shells. The inner shell may at least partially define a combustion chamber. The housing assembly may include an airflow passage having an opening extending through the outer shell. The airflow passage may extend between the outer shell and the intermediate shell as well as between the intermediate shell and the inner shell. The airflow passage may provide fluid communication between the opening and the combustion chamber. The ignition device may be at least partially disposed within the housing assembly and may ignite fuel received from a fuel source and air received from the airflow passage to produce a flame in the combustion chamber. The airflow passage may be in a heat transfer relationship with the flame in the combustion chamber.

Exhaust Aftertreatment Burner With Preheated Combustion Air

The present invention relates to a reducing agent pyrolysis system for a selective catalytic reduction apparatus. The reducing agent pyrolysis system for the selective catalytic reduction apparatus, according to the present invention, comprises: an elbow duct (10) installed on an exhaust duct at the front end of a reactor so that exhaust gas is introduced and then is discharged toward the reactor; an inner pipe unit (20), arranged inside of the elbow duct (10), for introducing and discharging a portion of the exhaust gas; a heating device (60, installed inside on the inner pipe unit (20), for heating the exhaust gas that is introduced into the inner pipe unit (20); and a nozzle (70), installed on the inner pipe unit (20) and arranged toward the rear end of the heating device (60) with respect to the flow of the exhaust gas, for spraying the reducing agent inside the inner pipe unit (20).

Reducing agent pyrolysis system for selective catalytic reduction apparatus

The present invention relates to an exhaust gas treatment apparatus to reduce the volume of water required for water treatment while simultaneously treating nitrogen oxide and sulfur oxide and to solve a problem relating to corrosion. According to an embodiment of the present invention, the exhaust gas treatment apparatus comprises: an oxidation unit to oxidize the nitrogen oxide and the sulfur oxide included in exhaust gas into soluble gas; a urea injector to inject urea to the exhaust gas passing the oxidation unit to convert the soluble gas, in which the nitrogen oxide and the sulfur oxide are oxidized, into a neutral salt material; and a wet scrubber to dissolve and discharge the neutral salt material by injecting water to the exhaust gas including the neutral salt material.

Exhaust gas treatment apparatus

PURPOSE: A burner assembly provided with a dual injection is provided to inject sufficient mixed fuel for applying heat to exhaust gas in proportion to the increased discharge of exhaust gas by high output of an engine. CONSTITUTION: A burner assembly provided with a dual injection comprises: a mixing chamber(400) attached to one side of a pipeline where exhaust gas moves and provided with an inflow port(410) to let exhaust gas in, a discharge port(420) to discharge exhaust gas and an inside space(430) to heat up influent exhaust gas; a burner portion(200) attached to one side of the mixing chamber, and burning the influent mixed fuel from the outside and forming flames, and guiding flames toward the discharge port from the inside space of the mixing chamber; a second injection(100) attached to the other side of the mixing chamber and injecting mixed fuel toward the direction of flames formed in the burner portion; and a flame spread pipe(440) located in the inside space of the mixing chamber and connected with a flame formation portion(340) to spread and burn the flames in the inside space.

Buner assembly including dual injection

PURPOSE: A burner device for increasing the temperature of exhaust gas is provided to install a separate combustion chamber, thereby reducing flames by using the exhaust gas flowing at high pressure and preventing the flames being extinguished. CONSTITUTION: A burner device for increasing the temperature of exhaust gas comprises a body(110), an inner pipe(140), an ignition device(150), a fuel spraying nozzle(160), and a mixing box(180). The body unit has an inner space(111). The inner pipe is inserted inside the inner space and includes a combustion chamber(141). The ignition device is mounted by penetrating through the body unit and the inner pipe. The fuel spraying nozzle sprays fuel to the combustion chamber corresponding to the ignition device.

Burner device for increasing temperature of exhaust gas

PURPOSE: An exhaust gas purification device is provided to run a recycling process in one purification area while a collection process progresses on the other purification, whereby even a carrier recycling process is capable of continuously purifying exhaust gas CONSTITUTION: An exhaust gas purification device includes an inlet tube(110), a can member(120) and a valve unit The inlet tube has an exhaust gas inlet(111) and multiple branched branch pipes(112,113) The can member is mounted with one carrier on the position faced with each branch pipe in the inner space to purify the pollutants included in exhaust gas The rear end of the can member is formed with a waste gas outlet(122) The valve unit is arranged respectively on a branched flow path, and selectively opens and closes the flow paths, wherein the valve unit alternately performs a valve operation to open only one flow path and closes the other flow path

Exhaust gas purification apparatus

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Buner assembly including dual injection

Burner device for increasing temperature of exhaust gas

Exhaust gas purification apparatus