Corrosion-resistant incinerator tail flue

Abstract

The utility model relates to the technical field of incinerators, in particular to a corrosion-resistant incinerator tail flue which comprises a tail smoke pipe, a connecting opening is formed in the outer wall of one side of the bottom of the tail smoke pipe, and the tail flue further comprises a tail flue body. The spraying mechanism is arranged in the tail smoke pipe; the spraying mechanism comprises an inner pipe fixedly connected to the inner wall of the bottom of the tail smoke pipe, an outer pipe is fixedly connected to the inner wall of the top of the tail smoke pipe, an annular pipe is fixedly connected to the inner wall of the top of the outer pipe, an annular groove is formed in the outer wall of the top end of the annular pipe, and a spraying pipe is fixedly connected to the inner wall of the annular groove. A plurality of mounting holes are formed in the outer wall of the bottom end of the spraying pipe, and nozzles are mounted on the inner walls of the mounting holes; according to the utility model, the entering flue gas is separated from water mist generated by spraying, so that the phenomenon that the sprayed water mist is adhered to the inner wall of the flue and slides down along the flue to corrode the flue is avoided, the stable rising of the subsequent flue gas is ensured, and the service life of the tail flue of the incinerator is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of incinerator technology, specifically a corrosion-resistant incinerator tail flue. Background Technology

[0002] The flue of the incinerator is connected to the furnace, through which flue gas is discharged. The incinerator uses high-temperature pyrolysis technology to oxidize and burn organic waste with air inside the incinerator. The combustion process produces flue gas and combustion ash. When the flue gas enters the flue, it is accompanied by high temperature and small particulate ash. Long-term high temperature damages the flue and causes cracks. Small particulate ash in the flue gas can easily accumulate in the flue and affect the ventilation effect of the flue.

[0003] A search of Chinese patent CN215489758U reveals a flue structure for an incinerator. After entering the flue, the flue gas is guided by a guide plate to a centrifugal flue. The flue gas moves along the arc-shaped sidewall of the centrifugal flue, generating centrifugal force during this movement. Ash particles mixed in the flue gas fall onto the arc-shaped sidewall and then into the first discharge port, thus recovering the ash. Before entering the spray flue, the flue gas is blocked by baffles, preventing large ash particles from entering. These large ash particles continue to fall along the arc of the sidewall to the first discharge port due to the impact of the baffles. After entering the spray flue, the flue gas is cooled and filtered by the water mist sprayed from the nozzles. Small ash particles remaining in the flue gas are submerged by the water mist and fall to the second discharge port. This flue structure achieves air filtration and ash recovery, preventing the gradual accumulation of ash during exhaust and avoiding secondary pollution from subsequent exhaust.

[0004] Based on the above search and existing technology, it was found that the above patent has certain defects. Because it uses direct spraying of water mist to cool and filter the smoke, the sprayed water mist is easy to adhere to the inner wall of the flue and slide down the flue to corrode it. In addition, the directly sprayed water mist can also affect the flow of subsequent smoke, affect the smoke exhaust effect, and reduce the service life of the flue at the tail of the incinerator. Utility Model Content

[0005] The purpose of this invention is to provide a corrosion-resistant incinerator tail flue to solve the problems mentioned in the background art.

[0006] The technical solution of this utility model is: a corrosion-resistant incinerator tail flue, including a tail flue pipe, wherein a connection port is provided on one side of the outer wall at the bottom of the tail flue pipe, and further comprising;

[0007] A spraying mechanism is provided inside the tail flue pipe;

[0008] The spraying mechanism includes an inner tube fixedly connected to the inner wall of the bottom of the tail flue, an outer tube fixedly connected to the inner wall of the top of the tail flue, an annular tube fixedly connected to the inner wall of the top of the outer tube, an annular groove formed on the outer wall of the top of the annular tube, a spraying pipe fixedly connected to the inner wall of the annular groove, several mounting holes formed on the outer wall of the bottom of the spraying pipe, nozzles mounted on the inner wall of the mounting holes, a conical groove formed on the outer wall of the bottom of the annular tube, a conical tube fixedly connected to the outer wall of the top of the inner tube, a liquid inlet hole formed on the outer wall of the other side of the top of the tail flue, a liquid inlet pipe inserted into the inner wall of the liquid inlet hole, the liquid inlet pipe communicating with the spraying pipe, and a wire mesh demister installed on the inner wall of the top of the tail flue.

[0009] Preferably, the nozzles are inclined and arranged in a ring array, with the ring tube located directly above the inner tube.

[0010] Preferably, the outer tube is located above the connection port, the tail smoke pipe is L-shaped, and the other side of the top of the tail smoke pipe is provided with a smoke outlet.

[0011] Preferably, a purifier is installed on the outer wall of the smoke outlet, and the nozzle is sized to match the conical tube.

[0012] Preferably, the inner wall of the tail smoke pipe is provided with an epoxy zinc-rich primer, and the inner wall of the epoxy zinc-rich primer is provided with a fluorocarbon resin coating.

[0013] This utility model provides an improved corrosion-resistant incinerator tail flue, which has the following improvements and advantages compared with the prior art:

[0014] Firstly, this utility model is equipped with a tail flue, an outer pipe, an inner pipe, an annular pipe, a spray pipe, nozzles, and a wire mesh demister. When the smoke rises to the position of the annular pipe, the sprayed water forms a water mist to cool and filter the smoke. The nozzles are all tilted and point towards the center of the top of the inner pipe. The sprayed water carries the impurities of the smoke down and is collected by the conical pipe into the inner pipe. All the sprayed water mist flows inside the inner pipe and does not come into contact with the subsequent smoke and the tail flue. The wire mesh demister set at the top of the tail flue effectively removes the moisture in the sprayed flue gas, separating the incoming flue gas from the sprayed water mist. This prevents the sprayed water mist from adhering to the inner wall of the flue and sliding down the flue to corrode it. This ensures the stable rise of the subsequent flue gas and improves the service life of the tail flue of the incinerator.

[0015] Secondly, this utility model incorporates an epoxy zinc-rich primer and a fluorocarbon resin coating. The epoxy zinc-rich primer provides cathodic protection and initial chemical corrosion protection, while the surface fluorocarbon resin coating provides excellent chemical corrosion resistance and weather resistance. The two coatings work synergistically to form a multi-layered protection mechanism, effectively preventing damage from various corrosion mechanisms and further improving the corrosion resistance of the incinerator's tail flue. Attached Figure Description

[0016] The present invention will be further explained below with reference to the accompanying drawings and embodiments:

[0017] Figure 1 This is a schematic cross-sectional view of the tail smoke pipe structure of this utility model;

[0018] Figure 2 This is the utility model Figure 1 Enlarged schematic diagram of structure A in the middle;

[0019] Figure 3 This is a schematic diagram of the annular tube of this utility model;

[0020] Figure 4 This is an enlarged schematic diagram of a portion of the tail section of the flue pipe of this utility model.

[0021] Explanation of reference numerals in the attached figures:

[0022] 1. Tail flue; 2. Outer pipe; 3. Inner pipe; 4. Smoke outlet; 5. Connection port; 6. Conical pipe; 7. Liquid inlet pipe; 8. Wire mesh demister; 9. Purifier; 10. Ring pipe; 11. Spray pipe; 12. Spray head; 13. Conical groove; 14. Epoxy zinc-rich primer; 15. Fluorocarbon resin coating. Detailed Implementation

[0023] The present invention will now be described in detail, and the technical solutions in the embodiments of the present invention will be clearly and completely described. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present invention.

[0024] This utility model provides an improved corrosion-resistant flue gas duct for the tail section of an incinerator. The technical solution of this utility model is as follows:

[0025] like Figures 1-4 As shown, a corrosion-resistant incinerator tail flue includes a tail flue 1, with a connection port 5 on one side of the bottom outer wall of the tail flue 1, and also includes;

[0026] A spraying mechanism is installed inside the tail flue 1;

[0027] The spraying mechanism includes an inner tube 3 fixedly connected to the inner wall of the bottom of the tail flue 1, an outer tube 2 fixedly connected to the inner wall of the top of the tail flue 1, an annular tube 10 fixedly connected to the inner wall of the top of the outer tube 2, an annular groove on the outer wall of the top of the annular tube 10, a spray pipe 11 fixedly connected to the inner wall of the annular groove, several mounting holes on the outer wall of the bottom of the spray pipe 11, a nozzle 12 installed on the inner wall of the mounting holes, a conical groove 13 on the outer wall of the bottom of the annular tube 10, a conical tube 6 fixedly connected to the outer wall of the top of the inner tube 3, a liquid inlet hole on the outer wall of the other side of the top of the tail flue 1, a liquid inlet pipe 7 inserted into the inner wall of the liquid inlet hole, the liquid inlet pipe 7 communicating with the spray pipe 11, and a wire mesh demister 8 installed on the inner wall of the top of the tail flue 1.

[0028] Furthermore, the nozzles 12 are inclined and arranged in a ring array. The ring tube 10 is located directly above the inner tube 3, the outer tube 2 is located above the connection port 5, the tail smoke tube 1 is L-shaped, and the other side of the top of the tail smoke tube 1 is provided with a smoke outlet 4.

[0029] Furthermore, an air purifier 9 is installed on the outer wall of the smoke outlet 4, and the nozzle 12 is adapted to the size of the conical tube 6. The inner wall of the tail smoke pipe 1 is coated with an epoxy zinc-rich primer 14, and the inner wall of the epoxy zinc-rich primer 14 is coated with a fluorocarbon resin coating 15. The epoxy zinc-rich primer 14 and the fluorocarbon resin coating 15 are applied to the inner wall of the tail smoke pipe 1. The epoxy zinc-rich primer 14 provides cathodic protection and preliminary chemical corrosion protection, while the top fluorocarbon resin coating 15 provides excellent chemical corrosion resistance and weather resistance. The two coatings work together to form a multi-layer protection mechanism, effectively preventing damage from various corrosion mechanisms.

[0030] Working principle: When using the corrosion-resistant incinerator tail flue, the centrifugal pipe is connected to the tail flue pipe 1 at connection port 5. The centrifuged smoke directly enters the tail flue pipe 1 from the bottom. The smoke rises along the space between the outer pipe 2 and the inner pipe 3. Under the action of the pump, the spray water enters the spray pipe 11 through the liquid inlet pipe 7 and is finally sprayed out through the nozzle 12. When the smoke rises to the position of the annular pipe 10, the spray water forms a water mist to cool and filter the smoke. The nozzles 12 are all tilted and point towards the top center of the inner pipe 3. The spray water carries the impurities of the smoke down and is collected by the conical pipe 6 into the inner pipe. Inside the inner tube 3, all the sprayed water mist flows within the inner tube 3 and does not come into contact with the subsequent smoke and the tail smoke pipe 1. The wire mesh demister 8 installed at the top of the tail smoke pipe 1 effectively removes the moisture from the sprayed flue gas. After being purified by the purifier 9, the flue gas meets the emission standards and is discharged. An epoxy zinc-rich primer 14 and a fluorocarbon resin coating 15 are installed on the inner wall of the tail smoke pipe 1. The epoxy zinc-rich primer 14 provides cathodic protection and preliminary chemical corrosion protection, while the top fluorocarbon resin coating 15 provides excellent chemical corrosion resistance and weather resistance. The two coatings work together to form a multi-layer protection mechanism, effectively preventing damage from various corrosion mechanisms.

[0031] The technical means disclosed in this utility model are not limited to those described above, but also include technical solutions composed of equivalent substitutions of the above technical features. Matters not covered in this utility model are common knowledge to those skilled in the art.

Claims

1. A corrosion-resistant incinerator tail flue, comprising a tail flue pipe (1), wherein a connection port (5) is provided on one side of the outer wall at the bottom of the tail flue pipe (1), characterized in that: Also includes; A spraying mechanism is provided inside the tail smoke pipe (1); The spraying mechanism includes an inner tube (3) fixedly connected to the inner wall of the bottom of the tail smoke pipe (1), an outer tube (2) fixedly connected to the inner wall of the top of the tail smoke pipe (1), an annular tube (10) fixedly connected to the inner wall of the top of the outer tube (2), an annular groove is provided on the outer wall of the top of the annular tube (10), a spraying pipe (11) is fixedly connected to the inner wall of the annular groove, and a plurality of mounting holes are provided on the outer wall of the bottom of the spraying pipe (11). A nozzle (12) is installed on the inner wall of the hole. A conical groove (13) is opened on the outer wall of the bottom end of the annular tube (10). A conical tube (6) is fixedly connected to the outer wall of the top of the inner tube (3). An inlet hole is opened on the outer wall of the other side of the top of the tail smoke pipe (1). An inlet pipe (7) is inserted into the inner wall of the inlet hole. The inlet pipe (7) is connected to the spray pipe (11). A wire mesh demister (8) is installed on the inner wall of the top of the tail smoke pipe (1).

2. The corrosion-resistant incinerator tail flue according to claim 1, characterized in that: The nozzle (12) is inclined and arranged in a ring array. The ring tube (10) is located directly above the inner tube (3).

3. The corrosion-resistant incinerator tail flue according to claim 1, characterized in that: The outer tube (2) is located above the connection port (5), the tail smoke tube (1) is L-shaped, and the other side of the top of the tail smoke tube (1) is provided with a smoke outlet (4).

4. The corrosion-resistant incinerator tail flue according to claim 3, characterized in that: A purifier (9) is installed on the outer wall of the smoke outlet (4), and the nozzle (12) is adapted to the size of the conical tube (6).

5. A corrosion-resistant incinerator tail flue according to any one of claims 1-4, characterized in that: The inner wall of the tail smoke pipe (1) is provided with an epoxy zinc-rich primer (14), and the inner wall of the epoxy zinc-rich primer (14) is provided with a fluorocarbon resin coating (15).

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