Water-cooled waste gas treatment equipment based on plasma torch
By introducing a water-cooled structure into the plasma torch exhaust gas treatment equipment, and using water-cooled pipes and a condenser box to gradually cool the exhaust gas, the high temperature problem of the equipment is solved, ensuring environmental safety and improving purification efficiency.
Patent Information
- Application Number
- CN202520565817.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-03-28
- Publication Date
- 2026-03-06
- Estimated Expiration
- 2035-03-28
AI Technical Summary
Existing plasma torch exhaust gas treatment equipment generates high temperatures during use, affecting the internal and surrounding environment of the equipment. Furthermore, excessively high exhaust gas temperatures after combustion are detrimental to subsequent purification treatment.
It adopts a water-cooled structure, including water-cooled pipes, heat dissipation fins, steam exhaust pipes and condenser box. The exhaust gas is gradually cooled by cooling water, and the steam is quickly condensed by the condenser box to reduce the internal temperature of the equipment.
It effectively reduces the temperature of waste gas treatment equipment, prevents high temperatures from affecting the environment, and improves the efficiency of subsequent purification treatment.
Smart Images
Figure CN223976049U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of waste gas treatment technology, specifically to a water-cooled waste gas treatment device based on a plasma torch. Background Technology
[0002] In the manufacturing processes of various metal product processing plants and chemical plants, various kinds of production waste gases are always generated. Direct emission of these waste gases will damage the natural environment and reduce the air quality of the surrounding environment. Therefore, it is generally necessary to treat the waste gases before emission. The existing technologies use different treatment equipment and methods for different waste gases. For some highly toxic and strongly odorous harmful gases, plasma torches commonly used in waste gas treatment equipment are generally used to fully combust the harmful waste gases, so that the substances in the harmful waste gases are fully decomposed and reacted before subsequent purification treatment to ensure that the waste gases are fully treated.
[0003] In existing technologies, when using a plasma torch to fully combust waste gas in waste gas treatment equipment, firstly, the plasma torch generates high temperatures inside the waste gas treatment equipment during operation, and these high temperatures can escape to the outside of the equipment, affecting the surrounding environment. Secondly, the gas discharged after combustion by the plasma torch contains high temperatures, which is not conducive to direct treatment by other subsequent purification equipment. Based on the above problems, we propose a water-cooled waste gas treatment equipment based on a plasma torch. Utility Model Content
[0004] This invention proposes a water-cooled waste gas treatment device based on a plasma torch, which solves the problem that existing waste gas treatment devices using plasma torches generate high temperatures in the processed waste gas and the surrounding environment during use.
[0005] The technical solution of this utility model is as follows: A water-cooled waste gas treatment device based on a plasma torch, comprising a waste gas treatment cylinder, wherein a plasma torch is disposed on the top of the waste gas treatment cylinder, and further comprising:
[0006] An external exhaust stack is provided, wherein the external exhaust stack is connected to the bottom outside of the exhaust gas treatment cylinder, and an exhaust gas discharge channel is provided on one side of the exhaust gas treatment cylinder, and the bottom of the external exhaust stack is connected to the exhaust gas discharge channel;
[0007] An exhaust gas cooling structure is installed inside the exhaust gas emission channel. Cooling water flows inside the exhaust gas cooling structure. A spiral conveying pipeline is embedded in the outer wall of the exhaust gas treatment cylinder. The exhaust gas cooling structure is connected to the spiral conveying pipeline. Cooling water enters the spiral conveying pipeline through the exhaust gas cooling structure.
[0008] A cooling and draining ring is fixedly connected to the top of the external exhaust stack, and the cooling and draining ring is connected to the bottom of the spiral conveying pipeline.
[0009] To further cool the exhaust gas in the exhaust gas emission channel, the exhaust gas cooling structure includes water-cooled pipes, heat dissipation fins, steam emission pipes, and connecting pipes. Multiple water-cooled pipes are provided, each penetrating the exhaust gas emission channel. Multiple heat dissipation fins are fixedly connected between the outer walls of the multiple water-cooled pipes. The top of each water-cooled pipe is connected to the steam emission pipe, and the installation angle between the steam emission pipe and the water-cooled pipe is acute. Multiple connecting pipes connect the steam emission pipe and the water-cooled pipe.
[0010] To facilitate the flow of cooling water within the water-cooled pipes, a water injection cylinder is connected between the sides of the plurality of water-cooled pipes away from the exhaust gas treatment cylinder, and a drainage cylinder is connected between the sides of the plurality of water-cooled pipes close to the exhaust gas treatment cylinder. The drainage cylinder is connected to the spiral conveying pipe.
[0011] To increase the contact area between the spiral conveying pipeline and the exhaust gas treatment cylinder, the outer wall of the exhaust gas treatment cylinder is provided with a spiral mounting groove, and the spiral conveying pipeline is disposed in the spiral mounting groove.
[0012] To further cool the exhaust gas inside the external exhaust stack, the top of the external exhaust stack is designed as an inclined surface, and the bottom of the cooling and drainage ring is designed as a slope. The inclined surface fits into the slope. Multiple heat exchange fins are connected through the external exhaust stack and the cooling and drainage ring, and the multiple heat exchange fins are evenly distributed circumferentially between the external exhaust stack and the cooling and drainage ring.
[0013] In order to allow the exhaust gas inside the exhaust gas treatment cylinder to enter the external exhaust cylinder, an arc-shaped exhaust slot is further provided between the bottom of the external exhaust cylinder and the bottom of the exhaust gas treatment cylinder.
[0014] To further condense the steam in the steam discharge pipeline, a condenser box is fixedly connected to the top of the exhaust gas discharge channel, a polygonal condenser frame is fixedly connected inside the condenser box, multiple steam discharge pipelines are connected to the condenser box, and the bottom of the condenser box is connected to the water injection cylinder.
[0015] To further condense the steam into a liquid, the polygonal condensation frame is provided with a sandwich layer, and air passages are provided on both the inner and outer sides of the polygonal condensation frame, with multiple air passages interlacing with each other.
[0016] In order to promptly discharge the steam generated in the spiral conveying pipeline, a plurality of exhaust valve pipes are connected sequentially from top to bottom on one side of the spiral conveying pipeline, and the exhaust valve pipes are vertically connected to the spiral conveying pipeline.
[0017] In order to condense and collect the steam discharged from the spiral conveying pipeline, a water collection cylinder is further connected between the plurality of exhaust valve pipes.
[0018] The working principle and beneficial effects of this utility model are as follows:
[0019] 1. In this utility model, after the waste gas in the waste gas treatment cylinder is burned by the plasma torch, the burned gas will enter the bottom of the waste gas treatment cylinder under the driving force of the subsequent waste gas. The waste gas will continue to enter the outer-enclosed exhaust stack. The waste gas is transported upward in the outer-enclosed exhaust stack and gradually enters the waste gas emission channel. During the combustion and transportation of the waste gas, cooling water is transported to multiple water-cooled pipes through the water injection cylinder. During the flow of the cooling water in the water-cooled pipes, as the high-temperature waste gas comes into contact with the outer wall of the water-cooled pipes and the heat dissipation fins, the high-temperature waste gas is cooled down through the heat transfer of the cooling water. After the cooling water is discharged into the spiral conveying pipe, the cooling water continues to cool the outer wall of the waste gas treatment cylinder. Finally, the cooling water enters the cooling and drainage ring cylinder, so that the cooling water cools the high-temperature waste gas in the outer-enclosed exhaust stack, thereby realizing the gradual cooling of the treated waste gas during the emission process.
[0020] 2. After the cooling water in the water-cooled pipeline is heated and evaporates, the steam is transported to the condenser box for rapid condensation, so that the steam in the water-cooled pipeline is discharged in time, which facilitates the rapid reduction of the internal temperature of the water-cooled pipeline and improves the cooling effect of the exhaust gas. The timely discharge of steam in the spiral conveying pipeline through the exhaust valve pipe can also effectively control the internal temperature of the spiral conveying pipeline and improve the cooling effect on the outer wall of the exhaust gas treatment cylinder. Attached Figure Description
[0021] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;
[0023] Figure 2 This is a partial cross-sectional structural diagram of the present invention;
[0024] Figure 3 This is a partial cross-sectional structural diagram showing the combination of the waste gas treatment cylinder, plasma torch, bucket-shaped isolation cylinder, and combustion chamber in this utility model.
[0025] Figure 4 This is a partial cross-sectional structural diagram showing the water-cooled pipeline, steam discharge pipeline, connecting pipeline, condenser box, and polygonal condenser frame in this utility model.
[0026] Figure 5 This utility model Figure 4 A magnified structural diagram of part A in the middle;
[0027] Figure 6 This is a schematic diagram of the overall structure of the present invention from another perspective;
[0028] Figure 7 This is a partial cross-sectional structural diagram showing the combination of the external exhaust stack, cooling and drainage ring, and heat exchange fins in this utility model.
[0029] In the diagram: 1. Exhaust gas treatment cylinder; 2. Plasma torch; 3. External exhaust cylinder; 4. Exhaust gas emission channel; 5. Spiral conveying pipeline; 6. Cooling and drainage ring cylinder; 7. Water cooling pipeline; 8. Heat dissipation fins; 9. Steam emission pipeline; 10. Connecting pipeline; 11. Water injection cylinder; 12. Drainage cylinder; 13. Spiral mounting groove; 14. Heat exchange fins; 15. Arc-shaped exhaust port; 16. Condenser casing; 17. Polygonal condenser frame; 18. Jacket; 19. Air passage hole; 20. Exhaust valve pipe; 21. Water collection cylinder; 22. Air inlet pipeline; 23. Bucket-shaped isolation cylinder; 24. Combustion chamber; 25. Gas extraction and collection equipment; 26. Drainage pipe. Detailed Implementation
[0030] The technical solutions of this utility model will be clearly and completely described below with reference to the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this utility model.
[0031] like Figures 1 to 7 As shown, this embodiment proposes a water-cooled waste gas treatment device based on a plasma torch, including a waste gas treatment cylinder 1. A plasma torch 2 is installed on the top of the waste gas treatment cylinder 1. Multiple air inlet pipes 22 are connected to the top circumference of the waste gas treatment cylinder 1. A bucket-shaped isolation cylinder 23 is installed inside the waste gas treatment cylinder 1. The inner arc surface of the bucket-shaped isolation cylinder 23 is set as a combustion chamber 24. The waste gas that needs to be plasma-burned is transported to the combustion chamber 24 through the air inlet pipes 22. Then, the waste gas is fully burned by the plasma torch 2. Under the driving force of the subsequent waste gas, the burned gas will enter the bottom of the waste gas treatment cylinder 1.
[0032] It also includes an external exhaust stack 3, which is connected to the bottom outside of the exhaust gas treatment cylinder 1. An exhaust gas discharge channel 4 is provided on one side of the exhaust gas treatment cylinder 1. The bottom of the external exhaust stack 3 is connected to the bottom of the exhaust gas discharge channel 4. An arc-shaped exhaust slot 15 is connected between the bottom of the external exhaust stack 3 and the bottom of the exhaust gas treatment cylinder 1. After the exhaust gas enters the bottom of the exhaust gas treatment cylinder 1, the exhaust gas begins to dissipate naturally. The exhaust gas will enter the external exhaust stack 3 through the arc-shaped exhaust slot 15 and finally enter the exhaust gas discharge channel 4. In order to ensure the normal transportation of exhaust gas and to ensure that the exhaust gas can enter the external exhaust stack 3 normally from the combustion chamber 24, a suction collection device 25 (a negative pressure heat-resistant fan can be used) needs to be added between the exhaust gas discharge channel 4 and the external exhaust stack 3.
[0033] An exhaust gas cooling structure is installed inside the exhaust gas emission channel 4. Cooling water flows through the exhaust gas cooling structure to cool the exhaust gas inside the exhaust gas emission channel 4. The exhaust gas cooling structure includes water-cooled pipes 7, heat dissipation fins 8, steam emission pipes 9, and connecting pipes 10. Multiple water-cooled pipes 7 are installed, each penetrating the exhaust gas emission channel 4. Multiple heat dissipation fins 8 are fixedly connected to the outer walls of the multiple water-cooled pipes 7. The top of the water-cooled pipes 7 is connected to the steam emission pipes 9. The installation angle between the steam emission pipes 9 and the water-cooled pipes 7 is an acute angle. Multiple connecting pipes 10 connect the steam exhaust pipe 9 and the water cooling pipe 7. During the flow of cooling water in the water cooling pipe 7, as the high-temperature exhaust gas comes into contact with the outer wall of the water cooling pipe 7 and the heat dissipation fins 8, the high-temperature exhaust gas is cooled down through the heat transfer operation of the cooling water. A certain amount of steam is generated during the heat transfer operation of the cooling water. In order to ensure the temperature inside the water cooling pipe 7, the steam will be transported to the outside of the exhaust gas exhaust channel 4 through the steam exhaust pipe 9 and multiple connecting pipes 10, so as to ensure that the subsequent cooling water can be injected into the water cooling pipe 7 in a timely manner.
[0034] Multiple water-cooled pipes 7 are connected to a water injection cylinder 11 on the side away from the exhaust gas treatment cylinder 1, and multiple water-cooled pipes 7 are connected to a drain cylinder 12 on the side close to the exhaust gas treatment cylinder 1. The drain cylinder 12 is connected to the spiral conveying pipe 5. Cooling water is simultaneously injected into multiple water-cooled pipes 7 through the water injection cylinder 11, and the cooling water in multiple water-cooled pipes 7 is simultaneously transported to the spiral conveying pipe 5 through the drain cylinder 12.
[0035] A condenser box 16 is fixedly connected to the top of the exhaust gas discharge channel 4. A polygonal condenser frame 17 is fixedly connected inside the condenser box 16. Multiple steam discharge pipes 9 are connected to the condenser box 16. The bottom of the condenser box 16 is connected to the water injection cylinder 11. Steam is delivered to the condenser box 16 through the steam discharge pipes 9. After the steam condenses on the surface of the polygonal condenser frame 17 to form cooling water, the cooling water flows back to the water injection cylinder 11 through the condenser box 16, so that the condensed cooling water continues to flow back to the water cooling pipe 7.
[0036] The polygonal condensing frame 17 has a jacket 18 inside. Both the inner and outer sides of the polygonal condensing frame 17 have vent holes 19, which are interwoven. The polygonal condensing frame 17 is fixedly connected to the inner walls of both sides of the condensing chamber 16. The polygonal condensing pipes divide the interior of the condensing chamber 16 into two areas. After steam enters the condensing chamber 16, it comes into contact with the inner side of the polygonal condensing frame 17 and enters the jacket 18 through the vent holes 19. Since the multiple vent holes 19 are not corresponding, the steam needs to flow fully in the jacket 18 of the polygonal condensing frame 17 in order to be discharged through the outer side of the polygonal condensing frame 17. Through the temperature difference between the polygonal condensing frame 17 and the steam, the steam is condensed into cooling water and discharged through the vent holes 19 through the outer side of the polygonal condensing frame 17. Finally, the condensed cooling water enters the water injection cylinder 11.
[0037] A spiral conveying pipe 5 is embedded in the outer wall of the exhaust gas treatment cylinder 1. The exhaust gas cooling structure is connected to the spiral conveying pipe 5. Cooling water enters the spiral conveying pipe 5 through the exhaust gas cooling structure to cool the outer wall of the exhaust gas treatment cylinder 1. A spiral mounting groove 13 is opened on the outer wall of the exhaust gas treatment cylinder 1, and the spiral conveying pipe 5 is set in the spiral mounting groove 13. Although the bucket-shaped isolation cylinder 23 is used to block the heat generated during the operation of the plasma torch 2, the high temperature problem of the outer wall of the exhaust gas treatment cylinder 1 is still unavoidable. Through the full contact between the spiral conveying pipe 5 and the exhaust gas treatment cylinder 1, the cooling water flowing in the spiral conveying pipe 5 cools the outer wall of the exhaust gas treatment cylinder 1.
[0038] Multiple exhaust valves 20 are connected sequentially from top to bottom on one side of the spiral conveying pipeline 5. The exhaust valves 20 are vertically connected to the spiral conveying pipeline 5. A water collection cylinder 21 is connected between the multiple exhaust valves 20. When the cooling water in the spiral conveying pipeline 5 encounters overheating, it will also generate steam. In order to quickly reduce the temperature of the spiral conveying pipeline 5, the steam needs to be discharged from the spiral conveying pipeline 5 in a timely manner. The steam is discharged from the spiral conveying pipeline 5 through the exhaust valves 20. The exhaust port of the exhaust valve 20 faces upward to prevent the cooling water from overflowing into the exhaust valve 20. The steam will be discharged upward into the water collection cylinder 21. Due to the temperature difference between the water collection cylinder 21 and the steam, the steam condenses into cooling water. A drain valve is connected to the bottom of the water collection cylinder 21 for timely discharge of cooling water.
[0039] The cooling and draining ring cylinder 6 is fixedly connected to the top of the outer-enclosed exhaust stack 3. The cooling and draining ring cylinder 6 is connected to the bottom of the spiral conveying pipeline 5. After the cooling water enters the cooling and draining ring cylinder 6, it performs preliminary cooling on the exhaust gas inside the outer-enclosed exhaust stack 3. The top of the outer-enclosed exhaust stack 3 is set as an inclined surface, and the bottom of the cooling and draining ring cylinder 6 is set as a slope surface. The inclined surface fits into the slope surface. Multiple heat exchange fins 14 are connected through the outer-enclosed exhaust stack 3 and the cooling and draining ring cylinder 6. The multiple heat exchange fins 14 are evenly distributed around the circumference of the outer surface. Between the enclosed exhaust stack 3 and the cooling drain ring 6, the final cooling water will flow into the cooling drain ring 6 through the spiral conveying pipe 5. Multiple heat exchange fins 14 are used to transfer the temperature of the exhaust gas in the enclosed exhaust stack 3, so that the cooling water cools the heat exchange fins 14, thereby completing the initial cooling operation of the exhaust gas in the enclosed drain ring 12. The bottom of the cooling drain ring 6 is connected to the drain pipe 26. The cooling water flows on the sloping inner bottom wall of the cooling drain ring 6 and is finally discharged through the drain pipe 26.
[0040] The working principle of this water-cooled waste gas treatment equipment based on a plasma torch:
[0041] After the exhaust gas in the exhaust gas treatment cylinder 1 is burned by the plasma torch 2, the burned gas will enter the bottom of the exhaust gas treatment cylinder 1 under the impetus of the subsequent exhaust gas. The exhaust gas will continue to enter the outer exhaust cylinder 3. The exhaust gas is transported upward in the outer exhaust cylinder 3 and gradually enters the exhaust gas discharge channel 4. During the combustion and transportation of the exhaust gas, cooling water is transported to multiple water-cooled pipes 7 through the water injection cylinder 11. During the flow of the cooling water in the water-cooled pipes 7, as the high-temperature exhaust gas comes into contact with the outer wall of the water-cooled pipes 7 and the heat dissipation fins 8, the high-temperature exhaust gas is cooled by the heat transfer of the cooling water. After the cooling water is discharged into the spiral conveying pipe 5, the cooling water continues to cool the outer wall of the exhaust gas treatment cylinder 1. Finally, the cooling water enters the cooling and drainage ring cylinder 6, so that the cooling water cools the high-temperature exhaust gas in the outer exhaust cylinder 3.
[0042] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.
Claims
1. A water-cooled exhaust gas treatment device based on a plasma torch, comprising an exhaust gas treatment cylinder (1), the top of which is provided with a plasma torch (2), characterized in that, Also include: The outer exhaust cylinder (3) is communicated with the bottom outside of the exhaust treatment cylinder (1), one side of the exhaust treatment cylinder (1) is provided with an exhaust discharge channel (4), the outer exhaust cylinder (3) is communicated with the bottom of the exhaust discharge channel (4); The exhaust cooling structure is arranged in the exhaust discharge channel (4), cooling water flows in the exhaust cooling structure, a spiral conveying pipeline (5) is embedded on the outer wall of the exhaust treatment cylinder (1), the exhaust cooling structure is communicated with the spiral conveying pipeline (5), and cooling water enters the spiral conveying pipeline (5) through the exhaust cooling structure; The cooling and drainage ring cylinder (6) is fixedly connected to the top of the outer exhaust cylinder (3), and the cooling and drainage ring cylinder (6) is communicated with the bottom of the spiral conveying pipeline (5).
2. The water-cooled exhaust treatment apparatus based on a plasma torch according to claim 1, characterized in that, The exhaust cooling structure comprises: The water cooling pipeline (7) is provided in plurality, and the water cooling pipeline (7) penetrates the exhaust discharge channel (4); A plurality of heat dissipation fins (8) are fixedly connected between the outer walls of the plurality of water cooling pipelines (7); The steam discharge pipeline (9) is communicated with the top of the water cooling pipeline (7), and the installation angle between the steam discharge pipeline (9) and the water cooling pipeline (7) is an acute angle; A plurality of communication pipelines (10) are communicated between the steam discharge pipeline (9) and the water cooling pipeline (7).
3. The water-cooled exhaust treatment apparatus based on a plasma torch according to claim 2, characterized in that, A plurality of water injection cylinders (11) are communicated between the sides of the plurality of water cooling pipelines (7) away from the exhaust treatment cylinder (1), and a plurality of water discharge cylinders (12) are communicated between the sides of the plurality of water cooling pipelines (7) close to the exhaust treatment cylinder (1), and the water discharge cylinder (12) is communicated with the spiral conveying pipeline (5).
4. The water-cooled exhaust treatment apparatus based on a plasma torch according to claim 3, characterized in that, The outer wall of the exhaust treatment cylinder (1) is provided with a spiral installation groove (13), and the spiral conveying pipeline (5) is arranged in the spiral installation groove (13).
5. The water-cooled exhaust treatment apparatus based on a plasma torch according to claim 4, wherein, The top of the outer exhaust cylinder (3) is provided as an inclined surface, the bottom of the cooling and drainage ring cylinder (6) is provided as a slope, the inclined surface is attached to the slope, a plurality of heat exchange fins (14) are connected through between the outer exhaust cylinder (3) and the cooling and drainage ring cylinder (6), and the plurality of heat exchange fins (14) are circumferentially distributed between the outer exhaust cylinder (3) and the cooling and drainage ring cylinder (6).
6. The water-cooled exhaust treatment apparatus based on a plasma torch according to claim 5, wherein, The bottom of the outer exhaust cylinder (3) is communicated with the bottom of the exhaust treatment cylinder (1).
7. The water-cooled exhaust treatment apparatus based on a plasma torch according to claim 6, wherein, The top of the exhaust discharge channel (4) is fixedly connected with a condensing machine box (16), a plurality of polygonal condensing frames (17) are fixedly connected in the condensing machine box (16), a plurality of steam discharge pipelines (9) are communicated with the condensing machine box (16), and the bottom of the condensing machine box (16) is communicated with the water injection cylinder (11).
8. The water-cooled exhaust treatment apparatus based on a plasma torch according to claim 7, wherein, The polygonal condensing frame (17) is provided with a sandwich (18), and the inner side and the outer side of the polygonal condensing frame (17) are both provided with air passing holes (19), and the air passing holes (19) are staggered with each other.
9. The water-cooled exhaust treatment apparatus based on a plasma torch according to claim 8, wherein, A plurality of exhaust valve pipes (20) are sequentially communicated on one side of the spiral conveying pipeline (5) from top to bottom, and the exhaust valve pipes (20) are vertically communicated on the spiral conveying pipeline (5).
10. The water-cooled exhaust treatment apparatus based on a plasma torch according to claim 9, wherein, Water collecting cylinders (21) are communicated between the plurality of exhaust valve pipes (20).