KR19980082801A - After combustion to promote removal of harmful gaseous substances caused by swirl flow - Google Patents

Abstract

The present invention mainly installs the combustion gas inlet duct (path) in the afterburner so that the combustion gas coming from the incinerator flows in the circumferential direction to the afterburner in the afterburner, which is a rear end equipment of the incinerator that incinerates waste. In addition, by injecting the combustion (or combustion gas cooling) air and the flames of the burner at an angle and at an interval from the outside to the inside with the after-burning furnace, the combustion gas is strongly rotated inside the after-burning furnace, thereby After combustion of the combustion gas, the residence time is increased and the contact and mixing of the combustion gas with the burner flame and the high temperature atmosphere inside the combustion chamber is enhanced, thereby increasing the combustion efficiency and removing the harmful gas substances contained in the combustion gas. In addition, the centrifugal force generated by the rotation of the combustion gas smoothly removes dust and ash in the combustion gas. By making it possible to get out of a material (Ash) outlet of the lower combustion is one able to palpation of the removal efficiency of the dust contained in the combustion gas.

Description

After combustion to promote removal of harmful gaseous substances caused by swirl flow

According to the present invention, the combustion gas inlet duct is eccentrically installed and the combustion (or cooling) air and burner flames are inclined at an angle and at an interval from the outside of the combustion chamber to the inside so that the combustion gas is strongly rotated in the combustion chamber. It is to make it possible to smoothly remove the dust and harmful gas substances contained in the combustion gas in combustion.

The present invention is mainly a post-stage equipment of a waste incinerator, in a post-combustion furnace for reburning and removing dust and harmful substances in combustion gas generated during a waste combustion process, the combustion gas being rotated in a post-combustion furnace by rotation of the combustion gas. Hazardous gaseous substances caused by swirling flow to increase the dust collection efficiency by increasing the residence time of the gas and by allowing the combustion gas to be well mixed and contacted with the flame of the burner and the high temperature atmosphere in the combustion chamber. The post combustion furnace promotes removal. In particular, a combustion gas duct (path) connected from the incinerator to the post combustion furnace is installed eccentrically at the inlet part of the post combustion furnace, and the outside combustion furnace burns the combustion gas inside the post combustion furnace. Burner and combustion (or combustion gas cooling) air nozzle necessary for It is installed at an angle so that the combustion gas flowing from the incinerator to the post combustion furnace is actively turned in the after combustion furnace by the injection of eccentric inlet duct and burner flame and combustion (or combustion gas cooling) air. The present invention relates to a post-combustion furnace for promoting the removal of harmful gas substances by the generation of swirl flows to promote the removal efficiency of the harmful gas substances, dust and ashes.

Although the inlet duct and the burner are installed in the conventional post-combustion furnace, the inlet duct is not installed eccentrically, but is located at the center of the post-combustion furnace and the burner is also installed toward the center direction of the combustion chamber in which swirl flow is less likely to occur. Since combustion (or combustion gas cooling) air nozzles are not provided separately, even if the combustion gas does not rotate or rotates in the combustion chamber, the strength is weak, and thus a dust collection function cannot be expected and the combustion efficiency is significantly reduced.

Therefore, the present invention has been made for the purpose of improving the conventional problems as described above, the object of the combustion passing through the combustion chamber in the post-combustion furnace to reburn and remove the combustion gas harmful substances generated during combustion in the waste incinerator. It is to provide a post-combustion furnace for promoting the removal of harmful gas substances by generating a swirl flow which can remove dust and harmful gas substances contained in the combustion gas more efficiently by strongly rotating the gas.

The present invention is to install the combustion gas inlet duct of the post-fuel eccentrically to one side from the center of the post-combustion in order to achieve the above object and at the same time the burner is installed obliquely to have a constant angle and interval to the outside of the after-burner at the same time By installing one or multiple stage air nozzles in the same direction as the outflow direction of the burner, the combustion gas is strongly rotated to lengthen the residence time of the combustion gas in the combustion chamber, and the combustion gas and burner flame and combustion The post-combustion by mixing and contacting well with the high temperature atmosphere in the room, and by the centrifugal force generated by the rotation of the combustion gas, the dust or ash contained in the combustion gas is discharged to the ash outlet of the lower part by the post-combustion. It is designed to promote combustion efficiency and dust collection efficiency in the furnace.

1 is a schematic structural diagram of the present invention.

* Explanation of symbols for main parts of drawings *

(1): Eccentric combustion gas inlet duct (2): Burner

(3): air nozzle (4): combustion chamber

(5): Combustion gas outlet duct (6): Ash outlet

(7): fireproof material (8): skirt (cylindrical support structure)

Hereinafter, the configuration and the effect of the present invention will be described in detail with reference to the accompanying drawings.

1 is a structural diagram showing a state in which the present invention is installed.

The combustion gas inlet duct 1 of the post combustion furnace is conventionally installed at the center of the post combustion furnace so as to be biased in one direction, and the burner 2 and the air nozzle 3 which are externally installed in the post combustion furnace are installed. The combustion gas is inclined at one end or in multiple stages at a predetermined angle and interval so as to generate a vortex having a diameter of about 30% of the internal diameter 7 by post-combustion in the combustion chamber 4, so that the combustion gas is inlet duct 1 Burner (2) and air nozzle (3) installed at a constant angle and interval with the eccentric inlet duct (1) when it is combusted by the burner (2) flowing into the combustion chamber (4) through the outlet duct (5) Combustion gas is strongly rotated by the flame and air injected from the swelling, so that the residence time of the combustion gas in the combustion chamber 4 becomes long, and thus the contact of the combustion gas with the high-temperature atmosphere accumulated in the combustion chamber 4 becomes easy. Combustion efficiency Also, dust and ash in the combustion gas are sucked out through the re-exit 6 in the lower part of the combustion chamber 4 by the generated centrifugal force, so that harmful gaseous substances in the combustion gas can be removed and dust collection efficiency can be promoted. It is a structure.

The present invention as described above can effectively promote the removal efficiency and dust collection efficiency of the harmful substances contained in the combustion gas in the after-burner to reburn and remove the dust and harmful substances generated during combustion in the incinerator incinerated various wastes. As a result, new and existing post-combustion furnaces can be economically applied in a short period of time.

Therefore, the present invention in which the swirl flow is generated in the combustion chamber 4 by the burner 2 and the air nozzle 3 installed at an angle so as to have a constant angle and a distance from the eccentric inlet duct 1 is the combustion chamber 4 of the combustion gas. Increase the residence time and increase the efficiency of removal of harmful substances in the combustion gas by facilitating the combustion efficiency by smoothly contacting and mixing with the combustion gas burner (2) flame and the high temperature atmosphere in the combustion chamber (4). It is a useful invention that can achieve the dust collection efficiency by suction and discharge dust, ash, etc. in the combustion gas by the centrifugal force generated while the combustion gas rotates to the ash outlet (6) of the lower combustion chamber (4).

Claims (1)

In a post-combustion furnace, which is a rear end equipment of an incinerator in which waste is incinerated, the combustion gas inlet duct 1 is mounted eccentrically on the outer circumferential edge of the combustion chamber 4 and inside the combustion chamber 4 in the combustion chamber 4 of the post-combustion furnace. By generating a swirl flow, characterized in that the burner (2) and the air nozzle (3) is mounted to be inclined at a predetermined angle and interval to generate a vortex having a diameter of about 30% of the diameter After combustion to promote removal of harmful gaseous substances.