Flue gas quenching device for incinerator
By designing the overflow plate and flow shield in the flue gas quench device, a uniform circulating water curtain and rectified flue gas flow is formed, the problems of flue gas dirt adhesion and uneven temperature are solved, and efficient flue gas cooling and dioxin control are achieved.
Patent Information
- Application Number
- CN202420695537.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-07
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-04-07
AI Technical Summary
During operation, the existing flue gas quenching device is easy to adhere to the inner wall of the equipment, causing the poor conductor to lose the quenching effect. At the same time, the flue gas temperature is uneven and the cooling effect is poor.
A flue gas quenching device for incinerators is designed, including a shell, an overflow plate, a diffuser, a smoke exhaust pipe and a circulation pipe. A uniformly circulated vertical water curtain is formed through the overflow plate. The diffuser rectifies the flue gas, so that the high-temperature flue gas can be brought into contact with the quench liquid and cooled quickly.
Effectively control the formation of dioxins, improve the cooling effect of flue gas, reduce dirt adhesion, and ensure stable operation and efficient cooling of the equipment.
Smart Images
Figure CN222597773U_ABST
Abstract
Description
Technical Field
[0001] The utility model mainly relates to the technical field of flue gas rapid cooling equipment, in particular to a flue gas rapid cooling device for an incinerator. Background Art
[0002] In the flue gas treatment system of hazardous waste incinerators, the incineration flue gas will generate dioxins when it is cooled, so a quenching device is needed to quickly reduce the temperature of the high-temperature and highly corrosive flue gas from 1100°C to 200°C to reduce the generation of dioxins. In the actual operation of the existing quenching device, the dirt in the flue gas is easy to adhere to the inner wall of the equipment, forming a poor conductor and losing the proper quenching effect; at the same time, after the flue gas enters the quencher, there will be a bias flow, which causes a large amount of flue gas in some places, uneven temperature, and poor cooling effect when the quenching liquid is cooled. In order to solve the above problems, this application provides a flue gas quenching device for an incinerator. Utility Model Content
[0003] In order to achieve the above purpose, the utility model is implemented through the following technical solutions:
[0004] A flue gas rapid cooling device for an incinerator comprises a shell, an overflow plate is fixedly arranged on the inner wall of the shell near the top, a flow guide cover is fixedly arranged on the inner wall of the shell near the middle, a smoke exhaust pipe is fixedly arranged on the bottom of the inner wall of the shell, a flue gas inlet is fixedly arranged on the top of the shell, a liquid inlet and a liquid outlet are respectively arranged on the left and right sides of the shell, a circulation pipe is fixedly arranged on the back of the shell, and a water pump is fixedly arranged on the outer ring of the circulation pipe.
[0005] The overflow plate is arranged in a circular ring shape, the bottom outer ring of the overflow plate is fixedly connected to the inner wall of the shell, and the top ring is arranged at a distance from the inner wall of the shell, and overflow blocks are arranged in an array on the top of the overflow plate.
[0006] The deflector is arranged in a cone shape and is fixedly connected to the inner wall of the shell through a plurality of protrusions.
[0007] The top end of the circulation pipe is close to the overflow plate, and the bottom end of the circulation pipe is close to the bottom of the inner wall of the shell.
[0008] The smoke exhaust pipe comprises connecting pipes and collecting pipes arranged in an array. The top of the collecting pipe is communicated with the connecting pipe and the bottom of the collecting pipe passes through the bottom of the shell.
[0009] Compared with the prior art, the beneficial effects of the utility model are:
[0010] The utility model has a simple structure and is easy to install and use. A uniformly circulating vertical water curtain with a certain flow rate and pressure is formed through the overflow plate. At the same time, the guide cover rectifies the flue gas, so that the high-temperature flue gas is quickly cooled after uniformly contacting the quenching liquid, which can effectively control the formation of dioxins. The formed 360-degree water curtain can fully contact the flue gas, which is beneficial to improving the cooling effect. At the same time, washing the flue gas is beneficial to reducing the dirt adhering to the inner wall of the equipment. Afterwards, the flue gas is discharged through the exhaust pipe and the medium heat is also conducted, thereby further improving the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Attached Figure 1 It is a schematic diagram of the overall structure of the utility model;
[0012] Attached Figure 2 It is a schematic diagram of the first internal structure of the utility model;
[0013] Attached Figure 3 It is a second internal structure schematic diagram of the utility model.
[0014] The numbers shown in the accompanying drawings are: 1, shell; 101, flue gas inlet; 102, liquid inlet; 103, liquid outlet; 2, overflow plate; 201, overflow block; 3, guide cover; 4, smoke exhaust pipe; 401, connecting pipe; 402, collecting pipe; 5, circulation pipe; 6, water pump; 7, quenching liquid. DETAILED DESCRIPTION
[0015] The utility model is further described in conjunction with the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the utility model and are not used to limit the scope of the utility model. In addition, it should be understood that after reading the content taught by the utility model, those skilled in the art can make various changes or modifications to the utility model, and these equivalent forms also fall within the scope defined by this application.
[0016] In conjunction with the accompanying drawings, a flue gas quenching device for an incinerator includes a shell 1, an overflow plate 2 is fixedly arranged on the inner wall of the shell 1 near the top, a deflector 3 is fixedly arranged on the inner wall of the shell 1 near the middle, a smoke exhaust pipe 4 is fixedly arranged on the bottom of the inner wall of the shell 1, a flue gas inlet 101 is fixedly arranged on the top of the shell 1, and a liquid inlet 102 and a liquid outlet 103 are respectively arranged on the left and right sides of the shell 1 near the bottom, the liquid inlet 102 and the liquid outlet 103 are externally connected to a circulating cooling device so that the quenching liquid 7 at the bottom of the shell 1 circulates to ensure that the quenching liquid 7 always has a heat dissipation effect, a circulating pipe 5 is fixedly arranged at the back of the shell 1, and a water pump 6 is fixedly arranged on the outer ring of the circulating pipe 5.
[0017] The overflow plate 2 is arranged in a circular ring shape, the bottom outer ring of the overflow plate 2 is fixedly connected to the inner wall of the shell 1 and the top ring is spaced apart from the inner wall of the shell 1. Through this structural design, the overflowed quenching liquid 7 forms a water curtain, and the overflowed water curtain falls on the guide cover 3. The overflow block 201 is arranged in an array on the top of the overflow plate 2.
[0018] The deflector 3 is arranged in a conical shape and is fixedly connected to the inner wall of the shell 1 through a plurality of protrusions. The outer circle diameter of the deflector 3 is slightly larger than the inner circle diameter of the overflow plate 2.
[0019] The top end of the circulation pipe 5 is close to the overflow plate 2 , and the bottom end of the circulation pipe 5 is close to the bottom of the inner wall of the shell 1 .
[0020] The smoke exhaust pipe 4 includes a connecting pipe 401 and a collecting pipe 402 arranged in an array. The top of the collecting pipe 402 is connected to the connecting pipe 401 and the bottom passes through the bottom of the shell 1. The upper half of the collecting pipe 402 is conical and the lower half is cylindrical. The diameter of the conical part of the collecting pipe 402 is smaller than the diameter of the air guide cover 3.
[0021] The liquid level of the quenching liquid 7 is lower than the top of the connecting pipe 401 , and the smoke exhaust pipe 4 is wrapped by the quenching liquid 7 at the bottom of the shell 1 , which is beneficial for conduction cooling.
[0022] When the device is in use, the water pump 6 draws the quenching liquid 7 from the bottom of the shell 1 into the space between the overflow plate 2 and the inner wall of the shell 1 through the circulation pipe 5. When the liquid increases, it overflows from the top of the overflow plate 2, thereby forming a vertical water curtain with a uniform circulation with a certain flow rate and pressure; the high-temperature flue gas enters through the flue gas inlet 101, and diffuses to the surroundings after being rectified by the guide cover 3. After the high-temperature flue gas contacts the flowing quenching liquid 7, the temperature drops rapidly, and then the flue gas continues to be discharged downward through the exhaust pipe 4. Since the quenching liquid 7 at the bottom conducts heat to the exhaust pipe 4, the flue gas can further conduct heat to the medium when passing through, thereby realizing rapid cooling of the high-temperature flue gas.
[0023] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims
1. A flue gas quenching device for an incinerator, comprising a housing (1), characterized in that: An overflow plate (2) is fixedly arranged near the top position of the inner wall of the shell (1), a flow guide cover (3) is fixedly arranged near the middle position of the inner wall of the shell (1), a smoke exhaust pipe (4) is fixedly arranged at the bottom of the inner wall of the shell (1), a smoke inlet (101) is fixedly arranged at the top of the shell (1), a liquid inlet (102) and a liquid outlet (103) are respectively arranged on the left and right sides of the shell (1), a circulation pipe (5) is fixedly arranged at the rear of the shell (1), and a water pump (6) is fixedly arranged on the outer ring of the circulation pipe (5).
2. The flue gas quenching device for an incinerator according to claim 1, characterized in that: The overflow plate (2) is arranged in a circular ring shape, the bottom outer ring of the overflow plate (2) is fixedly connected to the inner wall of the shell (1) and the top circular ring is arranged at a distance from the inner wall of the shell (1), and overflow blocks (201) are arranged in an array on the top of the overflow plate (2).
3. The flue gas quenching device for an incinerator according to claim 1, characterized in that: The deflector (3) is arranged in a conical shape and is fixedly connected to the inner wall of the shell (1) via a plurality of protrusions.
4. The flue gas quenching device for an incinerator according to claim 1, characterized in that: The top end of the circulation pipe (5) is close to the overflow plate (2), and the bottom end of the circulation pipe (5) is close to the bottom of the inner wall of the shell (1).
5. The flue gas rapid cooling device for an incinerator according to claim 1, characterized in that: The smoke exhaust pipe (4) comprises connecting pipes (401) and collecting pipes (402) arranged in an array. The top of the collecting pipe (402) is connected to the connecting pipe (401) and the bottom passes through the bottom of the shell (1).