CN217843873U

CN217843873U - Air supply device for waste incineration secondary combustion chamber

Info

Publication number: CN217843873U
Application number: CN202221653642.8U
Authority: CN
Inventors: 王惠生; 高原; 韩聪
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-06-29
Filing date: 2022-06-29
Publication date: 2022-11-18
Anticipated expiration: 2032-06-29

Abstract

The utility model discloses a two combustion chambers air feed device of msw incineration belongs to refuse handling environmental protection equipment technical field, advance the pipe including two combustion chambers and the flue gas that sets up in two combustion chambers side bottom two combustion chambers side and encircle the flue gas and advance the pipe and set up the air feed pipe, air feed pipe slope sets up, and the air direction of air feed pipe and the flue gas enter the burning central point cross mixing of flue gas direction in two combustion chambers of pipe, adopt the air direction of air feed pipe and the flue gas enter the burning central point cross mixing of flue gas direction in two combustion chambers of pipe to with the jet-propelled burning direction crosspoint offset of combustor, adjust air feed pipe air admission according to the flue gas admission, and increase the mixed effect of flue gas and air, under the more abundant condition of burning, make oxygen content can fall to lower.

Description

Air supply device for waste incineration secondary combustion chamber

Technical Field

The utility model belongs to the technical field of refuse treatment environmental protection equipment, especially, two combustion chambers air supply device of msw incineration.

Background

As is well known, the incinerator is a harmless treatment device which is commonly used for harmless treatment of medical and domestic waste products and animals. The principle is that the combustion of coal, fuel oil, fuel gas and other fuels is utilized to carry out high-temperature incineration and carbonization on the object to be treated so as to achieve the aim of disinfection. The burning stove is equipped with two combustion chambers, one combustion chamber and two combustion chambers promptly, adopts the two-stage combustion mode, and one combustion chamber burns solid, two combustion chamber combustion gas: after entering a combustion chamber, the solid garbage is dried, anaerobically pyrolyzed and burnt out under the condition of a preset temperature, so that the generation of highly toxic gas (dioxin) is effectively controlled; the gas generated by pyrolysis enters a second combustion chamber for full combustion, in order to decompose unburned substances and meet the emission requirement, the second combustion chamber is provided with a burner for supporting combustion, and a unique secondary air supply device is configured to ensure that the flue gas is fully contacted with oxygen at high temperature.

Dioxin is a complex highly toxic organic compound characterized by polychlorinated benzene rings, and is researched by a large number of practices: in the full combustion process of the waste incineration flue gas in the secondary combustion chamber, under the condition of oxygen and chlorine elements, benzene ring organic matters in the flue gas are subjected to synthetic reaction with oxygen and chlorine at the temperature range of 450-250 ℃, so that dioxin can be synthesized. The utility model discloses a chinese utility model patent that the publication is CN215637190U discloses a burn system two combustion chambers system, including two combustion chambers 1, combustor 4 and oxygen suppliment fan 5, the bottom of two combustion chambers 1 is fixed with base 2, one side below of two combustion chambers 1 runs through there is air-supply line 3, the top of air-supply line 3 is provided with combustor 4, the top of combustor 4 is provided with oxygen suppliment fan 5, be provided with exhaust subassembly 6 in the middle of the top of two combustion chambers 1, the inside top of two combustion chambers 1 runs through there is vent 9, the bottom both sides of two combustion chambers 1 all run through has baiting valve 8, the inside below of two combustion chambers 1 is provided with antifouling subassembly 7. This patent is through flue gas bottom dispersion, then the burning, the mode of oxygen suppliment, and the second combustion chamber is interior oxygen content is sufficient, guarantees the abundant burning, greatly increased the probability of synthetic dioxin, consequently, guaranteeing under the prerequisite of abundant burning, how to control the mixed effect of flue gas and air feed, under the circumstances that the burning is more abundant, oxygen content can be lower, has become and has compelled the problem of solving.

SUMMERY OF THE UTILITY MODEL

In order to overcome the deficiencies and defects in the prior art, the utility model provides a two combustion chambers air supply device of msw incineration can guarantee under the prerequisite of full combustion, can the effective control flue gas with the oxygen content of air feed.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a waste incineration second combustion chamber air feed device, includes that second combustion chamber and the flue gas that sets up in second combustion chamber side bottom advance the pipe the second combustion chamber side and encircle the flue gas and advance the pipe and set up the air feed pipe, the air feed pipe slope sets up, and the air direction of air feed pipe and the flue gas direction of flue gas entering pipe are in the burning central point cross mixing in second combustion chamber.

As a further improvement of the utility model, a burner is arranged on the side surface of the second combustion chamber, and the burner extends into the second combustion chamber.

As a further improvement, the cross point of the air jet combustion direction of the burner and the air direction of the air supply pipe and the smoke direction of the smoke inlet pipe are in opposite impact.

As a further improvement, the distance L between the air supply pipe and the flue gas inlet pipe is 10cm.

As a further improvement, the quantity more than or equal to 6 of air feed pipes, the outer wall interval D less than or equal to 40cm of adjacent air feed pipes.

As a further improvement of the utility model, the inclination angle alpha of the air supply pipe is 10-15 degrees.

Compared with the prior art, the utility model discloses beneficial effect who has: the utility model discloses an air direction of air feed pipe and flue gas advance the burning central point of flue gas direction in two combustion chambers of pipe and alternately mix to with the jet-propelled burning direction crosspoint offset of combustor, adjust air feed pipe air admission according to the flue gas admission, and increase the mixed effect of flue gas and air, under the abundant condition more in the burning, make oxygen content can fall to lower.

Drawings

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

FIG. 1 is a front view of an air supply device of a secondary combustion chamber for waste incineration according to the present invention;

FIG. 2 is a side view of an air supply device of a secondary combustion chamber for waste incineration of the present invention;

in the figure: 1. a second combustion chamber; 2. a flue gas inlet pipe; 3. an air supply pipe; 4. a burner.

Detailed Description

In order to make the technical solution and the advantageous effects of the present invention more clear, the present invention will be further described in detail with reference to the following embodiments.

Referring to fig. 1, the embodiment of the utility model discloses waste incineration second combustion chamber air feed device, advance pipe 2 including second combustion chamber 1 and the flue gas that sets up in second combustion chamber side bottom second combustion chamber 1 side is and advance pipe 2 and set up air feed pipe 3 around the flue gas, air feed pipe 3 advances the interval L of pipe 2 for 10cm with the flue gas second combustion chamber 1 side sets up combustor 4, combustor 4 extends to second combustion chamber 1 inside. The air supply pipe 3 is obliquely arranged, the inclination angle alpha of the air supply pipe 3 is 10-15 degrees, and the air direction of the air supply pipe 3 and the smoke direction of the smoke inlet pipe 2 are crossed and mixed at the combustion center point of the combustor 4.

In order to ensure mixing and air input, the number of the air supply pipes 3 is more than or equal to 6, and the distance D between the outer walls of the adjacent air supply pipes 3 is less than or equal to 40cm.

The utility model discloses an air direction of air feed pipe 3 and flue gas enter the burning central point cross mixing of pipe 2 flue gas direction in two combustion chambers 1, increase the mixed effect of flue gas and air, advance the volume according to the flue gas and adjust air feed pipe 3 air and advance the volume, under the more abundant condition of burning for oxygen content can fall to lower.

Referring to fig. 1, the present embodiment is different from embodiment 1 in that the jet combustion direction of the burner 4 is opposite to the intersection point of the air direction of the air supply pipe 3 and the flue gas direction of the flue gas inlet pipe 2. Through the opposite impact with the jet combustion direction cross point of the combustor 4, the thorough combustion is ensured, and the regeneration of dioxin is inhibited because the oxygen content in the flue gas after the combustion can be reduced.

It should be understood that the detailed description and specific examples, while indicating the invention, are given by way of illustration only, not by way of limitation, since other embodiments will become apparent to those skilled in the art upon consideration of the following detailed description of the invention without any creative effort.

Claims

1. The utility model provides a waste incineration second combustion chamber air feed device, includes second combustion chamber (1) and sets up flue gas inlet pipe (2) in second combustion chamber side bottom, its characterized in that: the side of the secondary combustion chamber (1) is provided with an air supply pipe (3) surrounding the flue gas inlet pipe (2), the air supply pipe (3) is obliquely arranged, and the air direction of the air supply pipe (3) and the combustion center point of the flue gas direction of the flue gas inlet pipe (2) in the secondary combustion chamber (1) are mixed in a crossed manner.

2. The waste incineration secondary combustion chamber air supply device according to claim 1, characterized in that: and a burner (4) is arranged on the side surface of the secondary combustion chamber (1), and the burner (4) extends into the secondary combustion chamber (1).

3. The waste incineration secondary combustion chamber air supply device according to claim 2, characterized in that: and the jet combustion direction of the combustor (4) is in opposite impact with the intersection point of the air direction of the air supply pipe (3) and the smoke direction of the smoke inlet pipe (2).

4. The waste incineration secondary combustion chamber air supply device according to claim 1, characterized in that: and the distance L between the air supply pipe (3) and the flue gas inlet pipe (2) is 10cm.

5. The waste incineration secondary combustion chamber air supply device according to claim 4, characterized in that: the number of the air supply pipes (3) is more than or equal to 6, and the distance D between the outer walls of the adjacent air supply pipes (3) is less than or equal to 40cm.

6. The air supply device of the waste incineration secondary combustion chamber as set forth in claim 5, wherein: the inclination angle alpha of the air supply pipe (3) is 10-15 degrees.