Vulcanization flue gas waste heat recovery device for flue gas treatment

Abstract

The utility model discloses a vulcanization flue gas waste heat recovery device for flue gas treatment, and relates to the technical field of flue gas treatment, the vulcanization flue gas waste heat recovery device comprises a tank body, the tank body is provided with a heat exchange cavity, a mounting rack is rotatably connected in the heat exchange cavity, the inner wall of the mounting rack is provided with a plurality of heat exchange pipes and a scraping rack is slidably arranged on the inner wall of the mounting rack, the vulcanization flue gas waste heat recovery device for flue gas treatment comprises a tank body, a scraping frame is arranged on the tank body, a plurality of heat exchange pipes are arranged on the scraping frame, scraping rings are fixedly arranged at the positions, corresponding to the heat exchange pipes, of the scraping frame, the scraping rings are arranged on the outer sides of the heat exchange pipes in a sliding and sleeving mode, and an adjusting mechanism for driving the scraping frame to move is arranged on the tank body. The scraping frame moves to drive the scraping ring to slide on the surface of the heat exchange tube, and the scraping ring is used for scraping dirt attached to the surface of the heat exchange tube, so that the dirt is prevented from hindering the heat exchange effect of the heat exchange tube, and the waste heat recovery effect of the vulcanization flue gas waste heat recovery device for flue gas treatment can be effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of flue gas treatment technology, specifically a waste heat recovery device for sulfide flue gas in flue gas treatment. Background Technology

[0002] Vulcanizing flue gas is a mixed waste gas generated in the vulcanization process of the rubber industry, mainly originating from the high-temperature vulcanization process (140℃~200℃) of products such as tires, hoses, and belts. Its composition is complex, containing volatile organic compounds (VOCs), sulfides, and dust. The sulfide content in the flue gas is relatively high, generally around 200mg / m3.

[0003] In the prior art, an electrolytic aluminum flue gas waste heat and sulfide recovery device with authorization announcement number CN221470960U includes a shell, with an electrolytic flue gas inlet and an electrolytic flue gas outlet respectively provided on the corresponding two side walls of the shell. Horizontal heat exchange tubes and a sulfide condensation device are arranged sequentially inside the shell according to the flow direction of the electrolytic flue gas. A sulfide solution collector is connected to the bottom of the shell below the sulfide condensation device. Cold water pipes and hot water pipes are respectively connected to both ends of the horizontal heat exchange tubes, with the other ends of the cold water pipes and hot water pipes extending out of the shell.

[0004] While the above-mentioned scheme has many advantages, it also has the following disadvantages: The device uses horizontal heat exchange tubes to exchange heat with flue gas. Although it uses spray water for rinsing, the rinsing range of the spray water is limited (it can only rinse the direction in front of the nozzle, and the side of the heat exchange tube away from the nozzle will not be cleaned well due to insufficient rinsing force). In addition, the water quality of the spray water itself (minerals such as calcium and magnesium), as well as the dense scale layer formed by acidic condensate and stubborn solid particle deposits (such as sulfur particles) are not easy to clean. With long-term use, a thick scale layer will be attached to the surface of the heat exchange tube, which will affect the heat transfer or heat exchange effect of the heat exchange tube, thereby reducing the heat recovery effect of the sulfurized flue gas waste heat recovery device for flue gas treatment. Utility Model Content

[0005] The purpose of this invention is to provide a waste heat recovery device for sulfurized flue gas in flue gas treatment, so as to solve the problem that the waste heat recovery effect of existing waste heat recovery devices for sulfurized flue gas in flue gas treatment will decrease due to long-term use.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a waste heat recovery device for sulfide flue gas in flue gas treatment, comprising a tank body, wherein the tank body is provided with a heat exchange chamber, a mounting frame is rotatably connected inside the heat exchange chamber, a plurality of heat exchange tubes are provided on the inner wall of the mounting frame, and a scraper is slidably provided, wherein a scraper ring is fixedly provided at a corresponding position of the scraper relative to each heat exchange tube, the scraper ring is slidably sleeved on the outside of the heat exchange tube, and an adjustment mechanism for driving the scraper frame to move is provided on the tank body.

[0007] Preferably, the adjustment mechanism includes a stabilizing rod fixedly connected to the inner wall of the heat exchange chamber, and a threaded rod rotatably connected to the inner wall of the heat exchange chamber. A sliding sleeve is slidably sleeved on the outside of the stabilizing rod, and a threaded sleeve is threadedly sleeved on the outside of the threaded rod. Annular grooves are provided on opposite sides of the threaded sleeve and the sliding sleeve, and the scraper slides within the two annular groove cavities on both sides.

[0008] Preferably, a spray pipe is provided on the bottom wall inside the heat exchange chamber, and a linear array of nozzles is provided at the bottom of the spray pipe. One end of the spray pipe is connected to the outlet of the first water pump, which is located in the first water tank, and the first water tank is filled with spray water.

[0009] Preferably, the mounting bracket includes two mounting plates, and mounting grooves are formed on both sides of the inner wall of the heat exchange cavity. The two mounting plates are rotatably connected to the inner walls of the two mounting grooves, and a flow guiding cavity is provided in the mounting plate. The heat exchange tube is fixedly connected between the inner walls of the two flow guiding cavities.

[0010] Preferably, a guide pipe is fixedly connected to the axial center of the inner wall on one side of the guide cavity, and an outer pipe is rotatably provided at the end of the guide pipe through a rotary joint. The outer pipe is fixedly connected to the outer wall of the tank body, and one end of the two outer pipes is fixedly connected to the second water pump and the hot water pipe, respectively. The second water pump is located in the second water tank, and the second water tank is filled with cold water.

[0011] Preferably, a toothed ring is fixedly sleeved on the outer side of the mounting plate, and a gear is meshed with one side of the toothed ring. The gear is rotatably connected to the inner wall of the mounting groove. Two servo motors are installed on the tank body, and the output shafts of the two servo motors are respectively fixedly connected to one side of the gear and one end of the threaded rod.

[0012] Preferably, an electrolytic flue gas inlet and an electrolytic flue gas outlet are formed on the inner walls of both sides of the tank, and a drain pipe is fixedly connected to the bottom of the tank, with a solenoid valve installed on the drain pipe.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] 1. This application sets up a scraping frame and a scraping ring on the scraping frame. The scraping frame moves to drive the scraping ring to slide on the surface of the heat exchange tube, and the scraping ring scrapes off the dirt attached to the surface of the heat exchange tube. This avoids the dirt from hindering the heat exchange effect of the heat exchange tube, thereby effectively improving the waste heat recovery effect of the sulfidation flue gas waste heat recovery device for flue gas treatment.

[0015] 2. This application, by setting a threaded rod and a rotatable mounting bracket and heat exchange tube, increases the spraying range on each heat exchange tube by rotating the mounting bracket, thus effectively improving the cleaning range and cleaning effect of the spray pipe. Attached Figure Description

[0016] Figure 1 This is a three-dimensional schematic diagram of the waste heat recovery device for flue gas treatment of this utility model.

[0017] Figure 2 This is a three-dimensional cross-sectional view of the waste heat recovery device for flue gas treatment of this utility model.

[0018] Figure 3 This is a three-dimensional schematic diagram showing the assembly of the mounting frame, heat exchange tubes, and scraper frame of the waste heat recovery device for flue gas treatment of sulfurized flue gas according to this utility model.

[0019] Figure 4 This is a three-dimensional cross-sectional view of the mounting frame of the waste heat recovery device for flue gas treatment of the present invention.

[0020] Figure 5 This is a three-dimensional schematic diagram of the cooperation between the scraper and the threaded rod in the waste heat recovery device for flue gas treatment of sulfurized flue gas according to this utility model.

[0021] Labels in the diagram: 1. Tank body; 2. Heat exchange chamber; 3. Scraper frame; 4. Scraper ring; 5. Stabilizing bar; 6. Threaded rod; 7. Sliding sleeve; 8. Threaded sleeve; 9. Mounting bracket; 901. Mounting plate; 902. Flow guide chamber; 10. Annular groove; 11. Flow guide pipe; 12. Outer pipe; 13. Gear ring; 14. Gear; 15. Servo motor; 16. Spray pipe; 17. Electrolysis flue gas inlet; 18. Electrolysis flue gas outlet; 19. Drain pipe; 20. Heat exchange tube. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Example: Figure 1 - Figure 5As shown, this utility model provides a technical solution for a waste heat recovery device for flue gas treatment, including a tank 1, a heat exchange chamber 2, a mounting frame 9 rotatably connected inside the heat exchange chamber 2, a plurality of heat exchange tubes 20 arranged on the inner wall of the mounting frame 9, and a scraper 3 slidably arranged. A scraper ring 4 is fixedly arranged at the corresponding position of each heat exchange tube 20 on the scraper 3. The scraper ring 4 is slidably sleeved on the outside of the heat exchange tube 20. An adjustment mechanism for driving the scraper 3 to move is provided on the tank 1.

[0024] like Figure 2 , Figure 3 and Figure 5 As shown, the adjustment mechanism includes a stabilizing rod 5 fixedly connected to the inner wall of the heat exchange chamber 2, and a threaded rod 6 rotatably connected to the inner wall of the heat exchange chamber 2. A sliding sleeve 7 is slidably sleeved on the outside of the stabilizing rod 5, and a threaded sleeve 8 is threadedly sleeved on the outside of the threaded rod 6. Annular grooves 10 are opened on the opposite sides of the threaded sleeve 8 and the sliding sleeve 7. The scraper 3 slides in the cavities of the two annular grooves 10 on both sides respectively.

[0025] By rotating the threaded rod 6, the scraper 3 moves axially along the threaded rod 6, thereby using the scraper ring 4 on the scraper 3 to scrape off the dirt attached to the surface of the heat exchange tube 20.

[0026] like Figure 2 and Figure 4 As shown, a spray pipe 16 is provided on the bottom wall inside the heat exchange chamber 2. A linear array of nozzles is provided at the bottom of the spray pipe 16. One end of the spray pipe 16 is connected to the outlet of the first water pump. The first water pump is located in the first water tank, which is filled with spray water.

[0027] like Figure 4 As shown, the mounting bracket 9 includes two mounting plates 901. Mounting grooves are formed on both sides of the inner wall of the heat exchange chamber 2. The two mounting plates 901 are rotatably connected to the inner walls of the two mounting grooves respectively. A flow guide cavity 902 is provided in the mounting plate 901. The heat exchange tube 20 is fixedly connected between the inner walls of the two flow guide cavities 902.

[0028] like Figure 3 and Figure 4 As shown, a guide pipe 11 is fixedly connected to the axis on the inner wall of one side of the guide cavity 902. An outer pipe 12 is rotatably installed at the end of the guide pipe 11 through a rotary joint. The outer pipe 12 is fixedly connected to the outer wall of the tank body 1. One end of the two outer pipes 12 is fixedly connected to the second water pump and the hot water pipe, respectively. The second water pump is installed in the second water tank, which is filled with cold water.

[0029] By rotating the mounting bracket 9, the angle at which each heat exchange tube 20 on the mounting bracket 9 is sprayed can be changed, thereby increasing the spraying range of the spray pipe 16 and reducing the dead angles on the surface of the heat exchange tube 20 that are sprayed.

[0030] like Figure 3 - Figure 5 As shown, a gear ring 13 is fixedly sleeved on the outer side of the mounting plate 901. A gear 14 is meshed with one side of the gear ring 13. The gear 14 is rotatably connected to the inner wall of the mounting groove. Two servo motors 15 are installed on the tank body 1. The output shafts of the two servo motors 15 are fixedly connected to one side of the gear 14 and one end of the threaded rod 6, respectively. The servo motors 15 are electrically connected to the power supply.

[0031] like Figure 1 As shown, an electrolytic flue gas inlet 17 and an electrolytic flue gas outlet 18 are formed on the inner walls of both sides of the tank body 1, and a drain pipe 19 is fixedly connected to the bottom of the tank body 1. A solenoid valve is installed on the drain pipe 19.

[0032] The waste heat and sulfide recovery device for electrolytic aluminum flue gas is installed in the electrolytic aluminum purification device process. The electrolytic flue gas inlet 17 is connected to the flue gas outlet of the electrolytic equipment through a flange, and the electrolytic flue gas outlet 18 is connected to the electrolytic aluminum flue gas purification device through a flange.

[0033] When the flue gas flows through the electrolysis flue gas inlet 17 and into the heat exchange chamber 2 of the tank 1, some of the heat is transferred to the cold water flowing through the heat exchange tube 20 through conduction and flue gas convection. After the cold water is heated, it is connected to the hot water use port through the hot water pipe.

[0034] Some of the sulfides in the flue gas dissolve and adhere to the heat exchange tube 20. Water is sprayed onto the heat exchange tube 20 from top to bottom using the spray pipe 16, so that some of the sulfides dissolved on the heat exchange tube 20 and the spray water form a sulfide solution. The sulfide solution is discharged from the tank 1 through the drain pipe 19, and the wastewater discharged from the drain pipe 19 can be collected using loading tools such as collection boxes or collection buckets.

[0035] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other specific forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, it is intended that all variations falling within the meaning and scope of equivalents of the claims be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

Claims

1. A flue gas treatment sulfurized flue gas waste heat recovery device, comprising a tank body (1), characterized in that: The tank (1) is provided with a heat exchange chamber (2), and a mounting frame (9) is rotatably connected inside the heat exchange chamber (2). Multiple heat exchange tubes (20) are provided on the inner wall of the mounting frame (9), and a scraper (3) is slidably provided. A scraper ring (4) is fixedly provided at the corresponding position of each heat exchange tube (20) on the scraper (3). The scraper ring (4) is slidably sleeved on the outside of the heat exchange tube (20). An adjustment mechanism that drives the scraper (3) to move is provided on the tank (1).

2. The sulphurous off-gas heat recovery device for flue gas treatment according to claim 1, characterized in that: The adjustment mechanism includes a stabilizing rod (5) fixedly connected to the inner wall of the heat exchange chamber (2) and a threaded rod (6) rotatably connected to the inner wall of the heat exchange chamber (2). A sliding sleeve (7) is slidably sleeved on the outside of the stabilizing rod (5), and a threaded sleeve (8) is threadedly sleeved on the outside of the threaded rod (6). Annular grooves (10) are opened on the opposite sides of the threaded sleeve (8) and the sliding sleeve (7). The scraper (3) slides in the cavities of the two annular grooves (10) on both sides respectively.

3. The sulphurous off-gas heat recovery device for flue gas treatment according to claim 1, characterized in that: A spray pipe (16) is provided on the bottom wall inside the heat exchange chamber (2), and a linear array of nozzles is provided at the bottom of the spray pipe (16).

4. The sulphurous off-gas heat recovery device for flue gas treatment according to claim 1, characterized in that: The mounting bracket (9) includes two mounting plates (901). Mounting grooves are formed on both sides of the inner wall of the heat exchange chamber (2). The two mounting plates (901) are rotatably connected to the inner walls of the two mounting grooves. A flow guiding cavity (902) is provided in the mounting plate (901). The heat exchange tube (20) is fixedly connected between the inner walls of the two flow guiding cavities (902).

5. The sulphurous off-gas heat recovery device for flue gas treatment according to claim 4, characterized in that: A guide pipe (11) is fixedly connected to the axial center of the inner wall of one side of the guide cavity (902). An outer pipe (12) is rotatably provided at the end of the guide pipe (11) through a rotary joint. The outer pipe (12) is fixedly connected to the surface wall of the tank body (1).

6. The waste heat recovery device for sulfide flue gas treatment according to claim 4, characterized in that: A toothed ring (13) is fixedly sleeved on the outside of the mounting plate (901). A gear (14) is meshed with one side of the toothed ring (13). The gear (14) is rotatably connected to the inner wall of the mounting groove. Two servo motors (15) are installed on the tank body (1). The output shafts of the two servo motors (15) are fixedly connected to one side of the gear (14) and one end of the threaded rod (6), respectively.

7. The sulphurous off-gas heat recovery device for flue gas treatment according to claim 1, characterized in that: The inner walls on both sides of the tank (1) are respectively formed with an electrolytic flue gas inlet (17) and an electrolytic flue gas outlet (18). The bottom of the tank (1) is fixedly connected to a drain pipe (19), and a solenoid valve is provided on the drain pipe (19).

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