Ultralow emission device for sludge drying incineration tail gas

Abstract

The utility model discloses an ultralow emission device for sludge drying incineration tail gas, and belongs to the field of tail gas treatment. Comprising a tail gas pipe, the tail gas pipe is assembled at the top end of an incinerator, the top end of the tail gas pipe is connected with a U-shaped connecting pipe, the end, away from the tail gas pipe, of the U-shaped connecting pipe is connected with a tail gas purifying pipe, the tail gas purifying pipe is vertically and downwards distributed, and the bottom end of the tail gas purifying pipe is connected with a recycling box and a discharging pipe; an ozone purification mechanism and a spraying mechanism are arranged on the tail gas purification pipe, the ozone purification mechanism comprises a gas guide plate assembled in the tail gas purification pipe, a plurality of gas nozzles are assembled on the face, facing the middle of the interior of the tail gas purification pipe, of the gas guide plate, and the spraying mechanism comprises a splitter plate assembled in the tail gas purification pipe; and a plurality of atomizing nozzles are assembled on one surface, facing the middle part in the tail gas purification pipe, of the splitter plate. The sludge drying incineration tail gas ultra-low emission device has the beneficial effect of being good in tail gas purification performance.

Description

Technical Field

[0001] The present application relates to the field of tail gas treatment, and specifically, to an ultra-low emission device for sludge drying and incineration tail gas. Background Art

[0002] Sludge drying and incineration technology is an effective sludge treatment method, typically including multiple components such as a sludge receiving, storage, and feeding system, a thermal drying system, an incineration system, a heat recovery and utilization system, a flue gas purification system, and an ash / slag collection and treatment system. The sludge is dried to increase its calorific value, and then fed into an incinerator for high-temperature incineration, ultimately converting it into products such as flue gas and ash. During the sludge drying and incineration process, tail gas emissions are a significant environmental concern. Tail gas may contain pollutants such as sulfur dioxide, nitrogen oxides, particulate matter, and heavy metals. If discharged directly without proper treatment, it can cause serious pollution to the atmospheric environment. Therefore, achieving ultra-low tail gas emissions is one of the key goals of sludge drying and incineration technology.

[0003] Traditional sludge drying and incineration tail gas treatment usually uses an ozone deodorization structure or a spraying structure arranged in a pipeline to purify the tail gas. Although the tail gas can be purified, the particulate pollutants generated during the treatment process are difficult to be effectively collected and easily discharged into the atmosphere along with the tail gas, causing air pollution. For this reason, the present application proposes an ultra-low emission device for sludge drying and incineration tail gas. Utility Model Content

[0004] The content of this application is used to briefly introduce concepts that will be described in detail in the detailed description section below. The content of this application is not intended to identify key features or essential features of the technical solution for which protection is sought, nor is it intended to limit the scope of the technical solution for which protection is sought.

[0005] In order to solve the technical problems mentioned in the above background technology section, some embodiments of the present application provide an ultra-low emission device for sludge drying and incineration exhaust gas, including an exhaust pipe, which is installed at the top of the incinerator, and the top of the exhaust pipe is connected to a U-shaped connecting pipe, and the end of the U-shaped connecting pipe away from the exhaust pipe is connected to an exhaust gas purification pipe, the exhaust gas purification pipe is distributed vertically downward, and the bottom end of the exhaust gas purification pipe is connected to a recovery box and an exhaust pipe; an ozone purification mechanism and a spray mechanism are provided on the exhaust gas purification pipe, and the ozone purification mechanism includes an air guide plate installed in the exhaust gas purification pipe, and the air guide plate is equipped with multiple air nozzles on one side facing the middle of the exhaust gas purification pipe, and the spray mechanism includes a diverter plate installed in the exhaust gas purification pipe, and the diverter plate is equipped with multiple atomizing nozzles on one side facing the middle of the exhaust gas purification pipe.

[0006] Furthermore, the bottom end of the exhaust gas purification pipe is connected to a connecting shell, the recovery box is connected to the bottom end of the connecting shell and is in communication with the connecting shell, and the exhaust pipe is assembled on the side wall of the connecting shell.

[0007] Furthermore, a box door is provided on the side wall of the recovery box, and one end of the discharge pipe away from the connection shell is bent vertically upward.

[0008] Furthermore, a ring seat is provided at one end of the discharge pipe facing the connection shell, and a partition net is embedded in the ring seat.

[0009] Furthermore, the air guide plate is arranged above the diverter plate, and the air guide plate and the diverter plate are distributed vertically. There is at least one pair of air guide plates, and there are multiple diverter plates distributed in a ring shape. An air guide channel connected to multiple air nozzles is opened in the air guide plate, and the diverter plate has multiple guide channels connected to multiple atomizing nozzles.

[0010] Furthermore, an air guide pipe is provided on the outside of the exhaust gas purification pipe at a position corresponding to the air guide plate, the air guide pipe is conductively connected to the air guide plate, and an air supply pipe is connected to the air guide pipe.

[0011] Furthermore, a shell cover protruding outward is provided on the pipe wall of the exhaust gas purification pipe, the diverter plate is embedded in the shell cover, and a liquid infusion tube conductively connected to the diverter plate is passed through the shell cover.

[0012] Furthermore, the air nozzle and the atomizing nozzle are both arranged to be inclined upward.

[0013] The beneficial effect of the present application is that it provides an ultra-low emission device for sludge drying and incineration tail gas with good tail gas purification performance.

[0014] Through the ozone purification mechanism and spray mechanism arranged in the tail gas purification pipe, the tail gas generated by the drying and incineration of the sludge in the incinerator is discharged into the tail gas purification pipe through the tail gas pipe and the U-shaped connecting pipe. The gas supply pipe is connected to the ozone equipment. The ozone is transported to the air guide plate through the gas supply pipe and the air guide pipe and is sprayed out by multiple gas nozzles, reacting chemically with the malodorous gas in the tail gas to convert it into harmless substances. The liquid is transported by the liquid infusion pipe and sprayed into the inner tail gas purification pipe by the multiple atomizing nozzles on the diverter plate, which can spray and purify the tail gas in the tail gas purification pipe. The setting of multiple diverter plates can respectively input spray water, alkaline solution, oxidant solution, absorbent solution and configured composite solution. The multi-stage purification treatment method can further remove pollutants in the tail gas and improve the purification effect of the tail gas.

[0015] Through the vertical arrangement of the exhaust gas purification pipe and the recovery box set at the bottom of the exhaust gas purification pipe, the exhaust gas passes through the exhaust gas purification pipe from top to bottom, and the particulate matter in the exhaust gas that has undergone ozone reaction and spray sedimentation can directly fall into the recovery box for collection. The purified exhaust gas is filtered through the partition mesh and discharged from the emission pipe. The overall structure is reasonable, which can not only efficiently purify the exhaust gas after sludge drying and incineration, reduce exhaust gas emission pollution, but also centrally collect the pollutants purified from the exhaust gas, and avoid pollutants being discharged with the exhaust gas to pollute the environment. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings constituting a part of this application are used to provide a further understanding of this application and make other features, purposes and advantages of this application more apparent. The drawings and descriptions of the exemplary embodiments of this application are used to explain this application and do not constitute an improper limitation on this application.

[0017] In addition, throughout the drawings, the same or similar reference numerals represent the same or similar elements. It should be understood that the drawings are schematic and that the elements and components are not necessarily drawn to scale.

[0018] In the attached figure:

[0019] Figure 1 This is a schematic diagram of the structure of the incinerator assembled in this application;

[0020] Figure 2 This is a schematic diagram of the overall structure of this application;

[0021] Figure 3 This is a schematic diagram of the structure of the ozone purification mechanism for this application;

[0022] Figure 4 This is a schematic diagram of the spray mechanism structure of this application;

[0023] Figure 5 This is a structural diagram of the ring seat of this application.

[0024] Reference numerals:

[0025] 1. Incinerator; 2. Tail gas pipe; 3. U-shaped connecting pipe; 4. Tail gas purification pipe; 5. Recovery box; 6. Discharge pipe; 7. Connecting shell; 8. Ozone purification mechanism; 9. Spray mechanism; 10. Box door; 11. Air guide plate; 12. Gas nozzle; 13. Air guide pipe; 14. Gas supply pipe; 15. Diverter plate; 16. Atomizing nozzle; 17. Shell cover; 18. Liquid supply pipe; 19. Ring seat; 20. Partition. DETAILED DESCRIPTION

[0026] Embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although certain embodiments of the present disclosure are shown in the accompanying drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments described herein. On the contrary, these embodiments are provided to provide a more thorough and complete understanding of the present disclosure. It should be understood that the drawings and embodiments of the present disclosure are for illustrative purposes only and are not intended to limit the scope of protection of the present disclosure.

[0027] It should also be noted that, for ease of description, only the parts related to the invention are shown in the drawings. In the absence of conflict, the embodiments and features in the embodiments of the present disclosure may be combined with each other.

[0028] It should be noted that the concepts of "first" and "second" mentioned in this disclosure are only used to distinguish different devices, modules or units, and are not used to limit the order or interdependence of the functions performed by these devices, modules or units.

[0029] It should be noted that the modifications of "one" and "multiple" mentioned in the present disclosure are illustrative rather than restrictive, and those skilled in the art should understand that unless otherwise clearly indicated in the context, they should be understood as "one or more".

[0030] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0031] Reference Figure 1-Figure 5 As shown, a sludge drying and incineration tail gas ultra-low emission device includes a tail gas pipe 2, the tail gas pipe 2 is assembled at the top of the incinerator 1, the top of the tail gas pipe 2 is connected to a U-shaped connecting pipe 3, the end of the U-shaped connecting pipe 3 away from the tail gas pipe 2 is connected to the tail gas purification pipe 4, the tail gas purification pipe 4 is distributed vertically downward, and the bottom end of the tail gas purification pipe 4 is connected to a recovery box 5 and a discharge pipe 6; specifically, the bottom end of the tail gas purification pipe 4 is connected to a connecting shell 7, the recovery box 5 is connected to the bottom end of the connecting shell 7 and is in communication with the connecting shell 7, the discharge pipe 6 is assembled on the side wall of the connecting shell 7, and a box door 10 is provided on the side wall of the recovery box 5, and the end of the discharge pipe 6 away from the connecting shell 7 is bent vertically upward. The tail gas purification pipe 4 is provided with an ozone purification mechanism 8 and a spray mechanism 9. The tail gas generated by the drying and incineration of the sludge in the incinerator 1 is discharged into the tail gas purification pipe 4 through the tail gas pipe 2 and the U-shaped connecting pipe 3. After the tail gas is purified by the ozone purification mechanism 8 and the spray mechanism 9, it is discharged from the exhaust pipe 6. Due to the vertical arrangement of the tail gas purification pipe 4 and the recovery box 5 provided at the bottom end of the tail gas purification pipe 4, the tail gas passes through the tail gas purification pipe 4 from top to bottom. The particulate matter generated by the tail gas after purification in the tail gas purification pipe 4 can directly fall into the recovery box 5 for collection, and the pollutants purified from the tail gas can be collected in a centralized manner to prevent the pollutants from being discharged with the tail gas to pollute the environment.

[0032] In this embodiment, a ring seat 19 is provided at one end of the exhaust pipe 6 facing the connecting shell 7 , and a partition net 20 is embedded in the ring seat 19 to prevent the purified particulate pollutants from being discharged from the exhaust pipe 6 along with the exhaust gas.

[0033] Furthermore, in this embodiment, the ozone purification mechanism 8 includes an air guide plate 11 installed in the exhaust gas purification pipe 4, and a plurality of air nozzles 12 are installed on one side of the air guide plate 11 facing the middle of the exhaust gas purification pipe 4. There is at least one pair of air guide plates 11, and an air guide channel connected to the plurality of air nozzles 12 is opened in the air guide plate 11. An air guide pipe 13 is provided at a position corresponding to the air guide plate 11 on the outside of the exhaust gas purification pipe 4. The air guide pipe 13 is connected to the air guide plate 11, and an air supply pipe 14 is connected to the air guide pipe 13. The air supply pipe 14 is connected to the ozone equipment. Ozone is transported to the air guide plate 11 through the air supply pipe 14 and the air guide pipe 13 and is sprayed out by the plurality of air nozzles 12, chemically reacting with the malodorous gas in the exhaust gas to convert it into harmless substances.

[0034] Furthermore, in this embodiment, the spray mechanism 9 includes a diverter plate 15 installed in the exhaust gas purification pipe 4, and the diverter plate 15 is equipped with multiple atomizing nozzles 16 on one side facing the middle of the exhaust gas purification pipe 4. The diverter plate 15 has multiple guide channels connected to the multiple atomizing nozzles 16. Liquid is transported toward the diverter plate 15 and sprayed into the exhaust gas purification pipe 4 by the multiple atomizing nozzles 16 on the diverter plate 15, so that the exhaust gas in the exhaust gas purification pipe 4 can be sprayed for purification. There are multiple diverter plates 15 and they are distributed in a ring shape. The setting of multiple diverter plates 15 can respectively input spray water, alkaline solution, oxidant solution, absorbent solution and configured composite solution. The air guide plate 11 is arranged above the diverter plate 15, and the air guide plate 11 and the diverter plate 15 are both distributed vertically. The multi-stage purification treatment method can further remove pollutants in the exhaust gas and improve the purification effect of the exhaust gas.

[0035] Furthermore, in this embodiment, a shell cover 17 protruding outward is provided on the pipe wall of the exhaust gas purification pipe 4, the diverter plate 15 is embedded in the shell cover 17, and an infusion tube 18 connected to the diverter plate 15 is passed through the shell cover 17. The gas nozzle 12 and the atomizing nozzle 16 are both arranged to tilt upward, which can efficiently purify the exhaust gas flowing from top to bottom in the exhaust gas purification pipe 4.

[0036] During use, the tail gas generated by the drying and incineration of the sludge in the incinerator 1 is discharged into the tail gas purification pipe 4 through the tail gas pipe 2 and the U-shaped connecting pipe 3. The air supply pipe 14 is connected to the ozone equipment. The ozone is transported to at least a pair of air guide plates 11 provided in the tail gas purification pipe 4 through the air supply pipe 14 and the air guide pipe 13, and then sprayed out by multiple air nozzles 12, reacting chemically with the malodorous gas in the tail gas to convert it into harmless substances. At the same time, liquid is transported through the liquid delivery pipe 18 and then sprayed into the tail gas purification pipe 4 by the multiple atomizing nozzles 16 on the diverter plate 15, which can spray and purify the tail gas in the tail gas purification pipe 4. Treatment, the setting of multiple diversion plates 15 can respectively input spray water, alkaline solution, oxidant solution, absorbent solution and configured composite solution to further remove pollutants in the tail gas and improve the purification effect of the tail gas. The particulate matter after ozone reaction and spray sedimentation can directly fall into the recovery box 5 for collection, and the purified tail gas is filtered through the partition net 20 and discharged from the discharge pipe 6. The overall structure is reasonable, which can not only efficiently purify the tail gas after sludge drying and incineration, reduce tail gas emission pollution, but also centrally collect the pollutants purified from the tail gas to avoid pollutants being discharged with the tail gas to pollute the environment.

[0037] The above description is only an illustration of some preferred embodiments of the present disclosure and the technical principles used. Those skilled in the art should understand that the scope of the invention involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combination of the above-mentioned technical features, but should also cover other technical solutions formed by any combination of the above-mentioned technical features or their equivalent features without departing from the above-mentioned inventive concept. For example, the above-mentioned features are replaced with (but not limited to) technical features with similar functions disclosed in the embodiments of the present disclosure.

Claims

1. A sludge drying and incineration tail gas ultra-low emission device, comprising a tail gas pipe (2) mounted on the top of an incinerator (1), characterized in that: The top end of the tail gas pipe (2) is connected to a U-shaped connecting pipe (3), the end of the U-shaped connecting pipe (3) away from the tail gas pipe (2) is connected to a tail gas purification pipe (4), the tail gas purification pipe (4) is vertically distributed downward, and the bottom end of the tail gas purification pipe (4) is connected to a recovery box (5) and a discharge pipe (6); The tail gas purification pipe (4) is provided with an ozone purification mechanism (8) and a spray mechanism (9). The ozone purification mechanism (8) comprises an air guide plate (11) mounted in the tail gas purification pipe (4), and a plurality of air nozzles (12) are mounted on a side of the air guide plate (11) facing the middle of the tail gas purification pipe (4). The spray mechanism (9) comprises a diverter plate (15) mounted in the tail gas purification pipe (4), and a plurality of atomizing nozzles (16) are mounted on a side of the diverter plate (15) facing the middle of the tail gas purification pipe (4).

2. The ultra-low emission device for sludge drying and incineration tail gas according to claim 1 is characterized by: The bottom end of the tail gas purification pipe (4) is connected to a connecting shell (7), the recovery box (5) is connected to the bottom end of the connecting shell (7) and is in communication with the connecting shell (7), and the discharge pipe (6) is assembled on the side wall of the connecting shell (7).

3. The ultra-low emission device for sludge drying and incineration tail gas according to claim 2, characterized in that: A box door (10) is provided on the side wall of the recovery box (5), and one end of the discharge pipe (6) away from the connection shell (7) is bent vertically upward.

4. The ultra-low emission device for sludge drying and incineration tail gas according to claim 2, characterized in that: A ring seat (19) is provided at one end of the discharge pipe (6) facing the connection shell (7), and a partition net (20) is embedded in the ring seat (19).

5. The ultra-low emission device for sludge drying and incineration tail gas according to claim 1 is characterized in that: The air guide plate (11) is arranged above the diverter plate (15). The air guide plate (11) and the diverter plate (15) are both vertically distributed. At least one pair of the air guide plates (11) is provided. A plurality of the diverter plates (15) are provided and distributed in an annular shape. An air guide channel communicating with a plurality of air nozzles (12) is provided in the air guide plate (11). A plurality of air guide channels communicating with a plurality of atomizing nozzles (16) are provided in the diverter plate (15).

6. The ultra-low emission device for sludge drying and incineration tail gas according to claim 5, characterized in that: An air guide pipe (13) is provided at a position outside the exhaust gas purification pipe (4) corresponding to the air guide plate (11), the air guide pipe (13) is conductively connected to the air guide plate (11), and an air delivery pipe (14) is connected to the air guide pipe (13).

7. The ultra-low emission device for sludge drying and incineration tail gas according to claim 1 is characterized by: An outwardly protruding shell (17) is provided on the wall of the tail gas purification pipe (4), the diverter plate (15) is embedded in the shell (17), and a liquid infusion tube (18) is passed through the shell (17) and is conductively connected to the diverter plate (15).

8. The ultra-low emission device for sludge drying and incineration tail gas according to claim 1 is characterized by: The air nozzle (12) and the atomizing nozzle (16) are both arranged to be inclined upward.

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