Boiler tail gas purification, consumption reduction and environmental protection device

Abstract

The utility model discloses a kind of boiler tail gas purification consumption-reducing environmental protection devices, including bottom plate, the bottom plate top is fixed with multiple support plate, the quantity of support plate is three, and left side The support plate top is fixed with boiler main body, the boiler main body is as a whole set to be arranged in convex structure, middle side The support plate top is fixed with purification tank, right side The support plate top is fixed with water tank main body, the purification tank inside is provided with purification structure, The purification structure includes horizontal flow pipe, the purification tank is also arrayed fixed with longitudinal water pipe along horizontal direction, multiple The longitudinal water pipe is all through to horizontal flow pipe front end, multiple The longitudinal water pipe bottom is all arrayed fixed with vertical flow pipe, The vertical flow pipe bottom is fixed with spray plate, by setting up by horizontal flow pipe, longitudinal water pipe, vertical flow pipe and spray plate composition's three-dimensional net-like purification structure, multiple, uniform distribution of purification liquid in purification tank is realized, eliminate spray dead angle and short-circuit flow.

Description

Technical Field

[0001] This utility model relates to the field of boiler exhaust gas purification technology, and in particular to a boiler exhaust gas purification and energy-saving environmental protection device. Background Technology

[0002] Boiler exhaust gas refers to the waste gas produced during the combustion process of a boiler. Its main components include nitrogen, carbon dioxide, oxygen, sulfur dioxide, carbon monoxide, nitrogen oxides, dust, and water vapor. These exhaust gases may contain harmful substances such as sulfur dioxide and soot, which have a serious impact on the atmospheric environment. Therefore, it is very important to effectively monitor and treat boiler exhaust gas.

[0003] In the prior art, a gas boiler tail gas purification device according to patent publication number CN215216302U includes a purification tower, a conveying pipe embedded at the outer end of the purification tower, a fixing plate on the inner wall of the conveying pipe, a handle fixedly connected to the right end of the fixing plate, and two symmetrical sponge pads fixedly connected to the outer end of the fixing plate. The sponge pads are in contact with the inner wall of the conveying pipe, which can reduce the corrosion of the inner wall of the pipe when the tail gas enters the input pipe of the purification tower. However, the traditional tail gas purification device has a relatively simple spray or washing system structure, such as using a single nozzle or a simple pipe arrangement. This can easily lead to uneven distribution of the purification liquid (such as absorbent) in the purification box, forming spray dead zones or insufficient coverage density, resulting in insufficient contact between the tail gas and the absorbent, low reaction efficiency, and difficulty in ensuring that pollutants (such as sulfur dioxide and dust) are completely and efficiently removed, thereby reducing the tail gas consumption reduction effect. Utility Model Content

[0004] The purpose of this utility model is to provide a boiler exhaust gas purification and energy-saving environmental protection device to solve the problem that traditional exhaust gas purification devices have relatively simple spray or washing system structures, such as using a single nozzle or simple pipeline layout. This can easily lead to uneven distribution of the purification liquid (such as absorbent) in the purification tank, forming spray dead zones or insufficient coverage density, resulting in insufficient contact between the exhaust gas and the absorbent, low reaction efficiency, and difficulty in ensuring that pollutants (such as sulfur dioxide and dust) are completely and efficiently removed, thereby reducing the exhaust gas energy-saving effect.

[0005] To achieve the above objectives, a boiler exhaust gas purification and energy-saving environmental protection device is provided, comprising a base plate, with multiple support plates fixed to the top of the base plate, the number of which is three. A boiler body is fixed to the top of the left support plate, the boiler body being configured with a convex structure. A purification box is fixed to the top of the middle support plate, and a water tank body is fixed to the top of the right support plate. A purification structure is provided inside the purification box, the purification structure including a transverse flow pipe. One end of the transverse flow pipe is fixed to the inner wall of the purification box, and the other end extends to the right side of the outside of the purification box. Longitudinal water pipes are also fixed in an array along the transverse direction of the purification box, with multiple longitudinal water pipes extending to the front end of the transverse flow pipe. Vertical flow pipes are fixed in an array at the bottom of the multiple longitudinal water pipes, and a spray plate is fixed at the bottom of the vertical flow pipes.

[0006] According to the aforementioned boiler exhaust gas purification and energy-saving environmental protection device, a stirring structure is provided inside the main body of the water tank. The stirring structure includes a drive motor. A stirring rod is rotatably connected to the center of the inner side of the main body of the water tank. The output end of the drive motor passes through the inner side of the main body of the water tank and is fixedly connected to the stirring rod through a coupling. Multiple stirring sub-rods are fixedly arranged on the outer side of the stirring rod.

[0007] According to the aforementioned boiler exhaust gas purification and energy-saving environmental protection device, a liquid flow pipe is nested inside one end of the transverse flow pipe near the outer right side of the purification box, and the other end of the liquid flow pipe extends through to the inner side of the water tank body. A water flow pipe is fixed on the outer right side of the water tank body, and the inner side of the water flow pipe extends through to the interior of the water tank body.

[0008] According to the aforementioned boiler exhaust gas purification and energy-saving environmental protection device, the boiler body and the interior of the purification box are fixedly connected by two air flow pipes. One end of each air flow pipe extends into the inside of the boiler body, and the other end extends into the inside of the purification box. Each of the two air flow pipes is equipped with an air valve at its top.

[0009] According to the aforementioned boiler exhaust gas purification and energy-saving environmental protection device, a return pipe is fixed between the rear end of the purification box and the inner side of the water tank body, and a water pump is installed at the top of the return pipe, the water flow pipe and the two liquid flow pipes.

[0010] According to the aforementioned boiler exhaust gas purification and energy-saving environmental protection device, a placement groove is provided below the outer front end of the boiler body, a baffle is provided at the outer front end of the placement groove, and fixing holes are provided around the outer front end of the baffle, with multiple fixing holes penetrating into the interior of the boiler body.

[0011] According to the aforementioned boiler exhaust gas purification and energy-saving environmental protection device, the top of the boiler body, the purification box and the water tank body are all provided with a cover plate, and the top surface of the cover plate is provided with reinforcement holes around the perimeter, and the multiple reinforcement holes penetrate into the corresponding body.

[0012] According to the aforementioned boiler exhaust gas purification and energy-saving environmental protection device, the bottom plate is fixed with support frames on all four sides.

[0013] The above-mentioned solution has the following beneficial effects:

[0014] 1. The system adopts a three-dimensional mesh purification structure consisting of horizontal flow pipes, vertical water pipes, vertical flow pipes and spray plates, which realizes multi-level and uniform distribution of purification liquid in the purification box, effectively expands the contact area between purification liquid and exhaust gas, eliminates spray dead corners and short-circuit flow, and ensures that pollutants in exhaust gas (such as sulfur dioxide and dust) fully contact and react with absorbent, thereby significantly improving purification efficiency.

[0015] 2. By setting up a stirring structure, the absorbent (such as an alkaline solution) can maintain a uniform concentration and activity, prevent solid agents from precipitating and clumping, and ensure that the sprayed absorbent is always in the best reaction state, thus improving the stability of the purification effect.

[0016] 3. By adding a return pipe and a matching water pump, the unreacted liquid in the purification tank can be recycled and reused, thus improving the utilization rate of the absorbent.

[0017] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0019] Figure 1 This is an external overall schematic diagram of a boiler exhaust gas purification and energy-saving environmental protection device according to the present invention;

[0020] Figure 2 This is a schematic diagram of the inner side of the purification box and water tank of the boiler exhaust gas purification and energy-saving environmental protection device of this utility model.

[0021] Figure 3 This utility model relates to a boiler exhaust gas purification and energy-saving environmental protection device. Figure 2 Enlarged view of point A in the middle;

[0022] Figure 4 This is a top-view schematic diagram of the overall external structure of the boiler exhaust gas purification and energy-saving environmental protection device of this utility model.

[0023] Legend:

[0024] 1. Base plate; 2. Support plate; 3. Boiler body; 4. Purification box; 5. Water tank body; 6. Horizontal flow pipe; 7. Longitudinal water pipe; 8. Vertical flow pipe; 9. Spray plate; 10. Drive motor; 11. Stirring rod; 12. Stirring branch rod; 13. Liquid flow pipe; 14. Water flow pipe; 15. Gas flow pipe; 16. Gas valve; 17. Return pipe; 18. Water pump; 19. Baffle; 20. Fixing hole; 21. Cover plate; 22. Reinforcing hole; 23. Support frame. Detailed Implementation

[0025] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0026] Reference Figure 1-4 This utility model discloses a boiler exhaust gas purification and energy-saving environmental protection device, which includes a base plate 1. Multiple support plates 2 are fixed to the top of the base plate 1, with three support plates 2 in total. A boiler body 3 is fixed to the top of the left support plate 2, and the boiler body 3 has a convex structure. A purification box 4 is fixed to the top of the middle support plate 2, and a water tank body 5 is fixed to the top of the right support plate 2. A purification structure is provided inside the purification box 4, including a transverse flow pipe 6. One end of the transverse flow pipe 6 is fixed to the inner wall of the purification box 4, and the other end extends to the right side of the outside of the purification box 4. Longitudinal water pipes 7 are also fixed in an array along the transverse direction of the purification box 4, with multiple longitudinal water pipes 7 extending to the front end of the transverse flow pipe 6. Vertical flow pipes 8 are fixed in an array at the bottom of the multiple longitudinal water pipes 7, and spray plates 9 are fixed to the bottom of the vertical flow pipes 8. In the prior art, traditional exhaust gas purification devices... Its spraying or washing system has a relatively simple structure, such as using a single nozzle or a simple pipeline layout. This can easily lead to uneven distribution of the purification liquid (such as absorbent) in the purification tank 4, forming spray dead zones or insufficient coverage density. This results in insufficient contact between the exhaust gas and the absorbent, low reaction efficiency, and difficulty in ensuring that pollutants (such as sulfur dioxide and dust) are completely and efficiently removed, thereby reducing the exhaust gas consumption reduction effect. To address this problem, a three-dimensional mesh purification structure composed of a horizontal flow pipe 6, a vertical water pipe 7, a vertical flow pipe 8, and a spray plate 9 can be adopted. This achieves multi-level and uniform distribution of the purification liquid in the purification tank 4, effectively expanding the contact area between the purification liquid and the exhaust gas, eliminating spray dead zones and short-circuit flow, and ensuring that the pollutants (such as sulfur dioxide and dust) in the exhaust gas fully contact and react with the absorbent, thereby significantly improving the purification efficiency.

[0027] A stirring structure is provided inside the main body 5 of the water tank. The stirring structure includes a drive motor 10. A stirring rod 11 is rotatably connected to the center of the inner side of the main body 5 of the water tank. The output end of the drive motor 10 passes through the inner side of the main body 5 of the water tank and is fixedly connected to the stirring rod 11 through a coupling. Multiple stirring sub-rods 12 are fixed in an array outside the stirring rod 11. By setting up the stirring structure, the absorbent (such as alkaline solution) can maintain a uniform concentration and activity, prevent solid agents from precipitating and clumping, ensure that the sprayed absorbent is always in the best reaction state, and improve the stability of the purification effect.

[0028] A liquid flow pipe 13 is nested inside one end of the transverse flow pipe 6 near the outer right side of the purification tank 4. The other end of the liquid flow pipe 13 extends through to the inside of the water tank body 5. A water flow pipe 14 is fixed to the outer right side of the water tank body 5. The inside of the water flow pipe 14 extends through to the inside of the water tank body 5. Through the arrangement of the liquid flow pipe 13 and the water flow pipe 14, a complete and efficient liquid circulation and replenishment channel is constructed, realizing the recycling of water resources.

[0029] The boiler body 3 and the purification box 4 are fixedly connected by two air flow pipes 15. One end of each air flow pipe 15 passes through the inside of the boiler body 3 and the other end passes through the inside of the purification box 4. Each air flow pipe 15 is equipped with a valve 16 at the top. The boiler body 3 and the purification box 4 are connected in parallel by the two air flow pipes 15 and equipped with independent valves 16, which enables the device to have flexible tail gas flow control capability and facilitates the adjustment of the opening or closing or opening degree of a single air flow pipe 15.

[0030] A return pipe 17 is fixed between the rear end of the purification tank 4 and the inner side of the water tank body 5. A water pump 18 is installed at the top of the return pipe 17, the water flow pipe 14 and the two liquid flow pipes 13. By adding the return pipe 17 and the matching water pump 18, the unreacted liquid in the purification tank 4 can be recycled and reused, and the utilization rate of the absorbent is improved.

[0031] A placement groove runs through the lower outer front end of the boiler body 3. A baffle 19 is provided at the outer front end of the placement groove. Fixing holes 20 are provided around the outer front end of the baffle 19. Multiple fixing holes 20 extend into the interior of the boiler body 3. The placement groove with baffle 19 and fixing holes 20 on the boiler body 3 provides a convenient and safe operating window for ash cleaning, inspection and other maintenance work.

[0032] The boiler body 3, the purification box 4 and the water tank body 5 are all equipped with a cover plate 21. The top surface of the cover plate 21 is provided with reinforcement holes 22 around the perimeter. The multiple reinforcement holes 22 penetrate into the corresponding body. By setting the cover plate 21 on the top of each body and fixing it with the reinforcement holes 22, good sealing and openability are achieved.

[0033] The bottom of the base plate 1 is fixed with support frames 23 on all four sides, providing stable mechanical support for the entire device.

[0034] Working Principle: During operation, the exhaust gas generated by the boiler body 3 is introduced into the purification chamber 4 through two parallel airflow pipes 15. Operating the air valve 16 allows for adjustment or cutoff of individual airflow paths, enabling flexible control of the exhaust gas flow. The core of the purification process lies in the three-dimensional mesh purification structure within the purification chamber 4. Powered by the water pump 18, the absorbent prepared in the water tank body 5 is pumped through the liquid flow pipe 13 into the horizontal flow pipe 6, then distributed to the longitudinal water pipes 7, and finally delivered to the bottom spray plate 9 via the vertical flow pipe 8. This structure forms a densely distributed, comprehensive spray... The spray network can evenly and fully spray the absorbent into the purification tank 4 in the form of a mist. During the ascent, the exhaust gas undergoes efficient gas-liquid contact and chemical reaction with the absorbent droplets, and pollutants such as sulfur dioxide are effectively absorbed, thereby achieving the purification purpose. In order to maintain the activity and uniformity of the absorbent, the stirring structure in the main body of the tank 5 will work periodically or continuously. The drive motor 10 drives the stirring rod 11 and the stirring branch rod 12 to rotate, preventing solid agents from settling and ensuring that the circulating sprayed absorbent is always in the best reaction state. The purified clean gas is discharged from the top of the purification tank 4. The settled waste liquid and the absorbent that did not fully react during spraying are transported back to the main water tank 5 via the return pipe 17 located at the rear of the purification tank 4, driven by another water pump 18. This design achieves internal circulation and reuse of the liquid. Combined with the water flow pipe 14 for necessary fresh water replenishment, it forms a highly efficient and water-saving water resource circulation system, significantly reducing water and chemical consumption during operation. In addition, when it is necessary to clean the ash inside the boiler body 3 or to carry out maintenance, the placement slot sealed by the baffle 19 and the fixing hole 20 can be opened for operation. The cover plates 21 on the top of each main body are also securely sealed and easily opened through the reinforcement holes 22, facilitating internal inspection and maintenance of the entire system.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A boiler exhaust gas purification and energy-saving environmental protection device, comprising: The base plate (1) is characterized in that a plurality of support plates (2) are fixed on the top of the base plate (1), the number of support plates (2) is three, and a boiler body (3) is fixed on the top of the support plate (2) on the left side. The boiler body (3) is set in a convex structure. A purification box (4) is fixed on the top of the support plate (2) on the middle side, and a water tank body (5) is fixed on the top of the support plate (2) on the right side. A purification structure is provided inside the purification box (4). The purification structure includes a transverse flow pipe (6). One end of the transverse flow pipe (6) is fixed to the inner wall of the purification box (4), and the other end extends to the right side of the outside of the purification box (4). A longitudinal water pipe (7) is also fixed in a horizontal array along the purification box (4). A plurality of longitudinal water pipes (7) extend to the front end of the transverse flow pipe (6). A vertical flow pipe (8) is fixed in an array at the bottom of the plurality of longitudinal water pipes (7). A spray plate (9) is fixed at the bottom of the vertical flow pipe (8).

2. The boiler exhaust gas purification and energy-saving environmental protection device according to claim 1, characterized in that, The water tank body (5) is provided with a stirring structure inside. The stirring structure includes a drive motor (10). A stirring rod (11) is rotatably connected to the center of the inner side of the water tank body (5). The output end of the drive motor (10) extends through the inner side of the water tank body (5) and is fixedly connected to the stirring rod (11) through a coupling. Multiple stirring sub-rods (12) are fixedly arranged on the outside of the stirring rod (11).

3. The boiler exhaust gas purification and energy-saving environmental protection device according to claim 1, characterized in that, The transverse flow pipe (6) has a flow pipe (13) nested inside one end near the outer right side of the purification box (4). The other end of the flow pipe (13) extends through to the inner side of the water tank body (5). A water flow pipe (14) is fixed on the outer right side of the water tank body (5). The inner side of the water flow pipe (14) extends through to the inside of the water tank body (5).

4. The boiler exhaust gas purification and energy-saving environmental protection device according to claim 1, characterized in that, The boiler body (3) and the purification box (4) are fixedly connected by two air pipes (15). One end of the two air pipes (15) passes through the inside of the boiler body (3) and the other end passes through the inside of the purification box (4). A gas valve (16) is provided at the top of each of the two air pipes (15).

5. The boiler exhaust gas purification and energy-saving environmental protection device according to claim 3, characterized in that, A return pipe (17) is fixed between the rear end of the purification box (4) and the inner side of the water tank body (5). A water pump (18) is installed at the top of the return pipe (17), the water flow pipe (14) and the two liquid flow pipes (13).

6. The boiler exhaust gas purification and energy-saving environmental protection device according to claim 1, characterized in that, The boiler body (3) has a placement groove extending below the outer front end. A baffle (19) is provided at the outer front end of the placement groove. Fixing holes (20) are provided around the outer front end of the baffle (19). All the fixing holes (20) extend into the interior of the boiler body (3).

7. The boiler exhaust gas purification and energy-saving environmental protection device according to claim 1, characterized in that, The boiler body (3), the purification box (4) and the water tank body (5) are all provided with a cover plate (21) on the top. The cover plate (21) has reinforcement holes (22) around its top surface, and the reinforcement holes (22) penetrate into the corresponding body.

8. The boiler exhaust gas purification and energy-saving environmental protection device according to claim 1, characterized in that, The bottom of the base plate (1) is fixed with support frames (23) around its four sides.

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