A heat exchanger for sulfide production

Abstract

This invention relates to the field of heat exchanger technology, and provides a heat exchanger for sulfide production, including a shell, with end caps fixedly connected to both ends of the shell. An outgoing liquid pipe is fixedly connected to the upper part of the left end cap, and an outgoing liquid inlet pipe is fixedly connected to the lower part of the right end cap. A drive motor is fixedly installed on the right side of the right end cap, and a transmission shaft is fixedly connected to the output shaft of the drive motor. A threaded sleeve is threadedly connected to the middle of the transmission shaft, and a moving plate is fixedly connected to the curved surface of the threaded sleeve. Multiple scraper rings are fixedly installed inside the moving plate. An agitation mechanism is installed on the right side of the threaded sleeve, and a scraper is fixedly installed at the left end of the transmission shaft. This technical solution solves the problem that existing heat exchangers suffer from deteriorating overall heat transfer performance due to the precipitation and deposition of dissolved substances on the pipe wall, leading to increased thermal resistance as the scale layer thickness increases, affecting the stability and efficiency of the process flow, and making it difficult to ensure uniform heat transfer from the hot medium to the cold medium.

Description

Technical Field

[0001] The embodiments of the present invention relate to the field of heat exchanger technology, and more specifically, to a heat exchanger for sulfide production. Background Technology

[0002] In sulfide production, heat exchangers are critical equipment, primarily used for heat recovery and temperature control. This heat management is essential for maintaining optimal temperatures for chemical reactions, improving energy efficiency, and ensuring process safety. Shell-and-tube heat exchangers are commonly used due to their robust structure and suitability for high-temperature, high-pressure environments. In sulfide production, heat exchangers recover heat generated by the reaction, by retrieving heat from high-temperature exhaust gases or other byproducts, to preheat feedstock gases, thereby improving energy efficiency.

[0003] In the production of sulfides, when fluid passes through a shell-and-tube heat exchanger, temperature changes cause dissolved substances to precipitate and deposit on the outer wall of the tubes. As the scale layer thickens, thermal resistance increases, leading to a deterioration in the overall heat transfer performance of the heat exchanger and affecting the stability and efficiency of the process. Secondly, when fluid flows directly through the heat exchanger tube bundle without guidance, it tends to flow along the tube bundle directly, resulting in uneven temperature distribution and making it difficult to ensure uniform heat transfer from the hot medium to the cold medium. Summary of the Invention

[0004] To overcome the above-mentioned defects, the present invention provides a heat exchanger for sulfide production, which solves the technical problem of a heat exchanger for sulfide production in the prior art.

[0005] According to one aspect, at least one embodiment of the present invention provides a heat exchanger for sulfide production, including a housing, with end caps fixedly connected to both ends of the housing. An outgoing liquid pipe is fixedly connected to the upper part of the left end cap, and an outgoing liquid inlet pipe is fixedly connected to the lower part of the right end cap. A drive motor is fixedly installed on the right side of the right end cap, and a transmission shaft is fixedly connected to the output shaft of the drive motor. A threaded sleeve is threadedly connected to the middle of the transmission shaft, and a movable plate is fixedly connected to the curved surface of the threaded sleeve. A plurality of scraper rings are fixedly installed inside the movable plate, an agitation mechanism is installed on the right side of the threaded sleeve, and a scraper is fixedly installed on the left end of the transmission shaft.

[0006] The system comprises two liquid rings connected by multiple bundled tubes. Multiple connecting blocks are fixedly connected to the curved surfaces of both liquid rings. An inner liquid outlet pipe connects to the upper part of the left liquid ring, and an inner liquid inlet pipe connects to the lower part of the right liquid ring. During operation, the drive motor rotates the transmission shaft in both directions. Because the threaded sleeve is threaded to the transmission shaft, and the scraper ring is slidably connected to the bundled tubes, the threaded sleeve drives the moving plate and scraper ring to move left and right. This scrapes off the scale generated during heat exchange between the liquid inside the outer shell and the bundled tubes. This solves the problem of dissolved substances precipitating and depositing on the pipe wall. As the scale layer thickness increases, the thermal resistance increases, leading to a deterioration in the overall heat transfer performance of the heat exchanger and affecting the stability and efficiency of the process flow.

[0007] Preferably, a stirring blade is fixedly connected to the right end of the drive shaft, and an installation ring is fixedly connected inside the left end cover. A filter screen is movably installed in the middle of the installation ring, and a dust collection shell is movably installed at the bottom of the filter screen.

[0008] Preferably, the agitation mechanism includes a connecting ring, a shaft fixedly connected to the right side of the connecting ring, an annular cavity and multiple sliding cavities inside the shaft, a connecting rod rotatably mounted inside the sliding cavity, a rotating plate fixedly connected to the outer end of the connecting rod, a gear fixedly mounted to the inner end of the sliding cavity, an electromagnetic ring and a permanent magnet ring inside the annular cavity, and multiple racks fixedly connected to the left side of the permanent magnet ring. This structure allows the electromagnetic ring to be energized during operation, thereby attracting or repelling the permanent magnet ring, which in turn drives the gear to rotate. The gear, through the connecting rod, causes the rotating plate to deflect at a certain angle. The deflection angle of the rotating plate matches the rotation direction of the drive shaft, driving the motor to operate and causing the drive shaft to rotate forward, thereby driving the agitator blades to rotate. Simultaneously, multiple rotating plates rotate, thus agitating the cooling or heating liquid, further increasing its contact time with the bundle tube, and making its temperature mixing more uniform, thereby improving heat exchange efficiency.

[0009] Preferably, the transmission shaft has a thread in the middle and multiple circumferentially spaced grooves on its curved surface. The transmission shaft is rotatably connected to the end caps on both sides. The above structure allows the shaft to slide in the multiple grooves on the curved surface of the transmission shaft during operation, so that the shaft is driven by the transmission shaft to rotate and moves with the threaded sleeve under the drive of the threaded sleeve.

[0010] Preferably, the scraper ring is slidably sleeved on the curved surface of the bundle tube, and the scraper blade is adapted to the inner curved surface of the filter screen.

[0011] Preferably, the middle part of the filter screen is rotatably connected to the drive shaft, and the bottom of the filter screen has a notch. The above structure can drive the drive shaft to periodically reverse during operation by driving the drive motor, thereby driving the scraper ring to reciprocate linearly, thereby cleaning the scale on the surface of the bundle tube. The rotation of the drive shaft will drive the scraper to rotate, and the rotating scraper will scrape the scale on the inner wall of the filter screen into the interior of the dust collection shell.

[0012] Preferably, all of the connecting blocks are fixedly connected to the inner wall of the outer shell, and the inner liquid outlet pipe and the inner liquid inlet pipe penetrate the inner wall of the outer shell.

[0013] Preferably, the right side of the threaded sleeve has a rotating groove, the connecting ring is located inside the rotating groove, and the shaft is slidably connected to multiple sliding grooves.

[0014] Preferably, the rack meshes with the gear, both the rack and the gear are located inside the sliding cavity, and the rack is slidably connected to the sliding cavity.

[0015] Preferably, the electromagnetic ring is fixedly connected to the inner wall of the ring cavity, and the permanent magnet ring is located on the left side of the electromagnetic ring and slidably connected to the ring cavity. The above structure enables the electromagnetic ring to be energized in both directions during operation, thereby attracting or repelling the permanent magnet ring, thereby driving the gear to rotate. The gear will drive the rotating plate to deflect at a certain angle through the connecting rod, and the deflection angle of the rotating plate will be adapted to the rotation direction of the transmission shaft.

[0016] The beneficial effects of the embodiments of the present invention are as follows:

[0017] 1. This invention drives a motor to operate, causing the transmission shaft to rotate in both directions. Since the threaded sleeve is threadedly connected to the transmission shaft, and the scraper ring is slidably connected to the bundle tube, the threaded sleeve will drive the moving plate and the scraper ring to move left and right. This scrapes off the scale generated by the heat exchange between the liquid inside the outer shell and the inside of the bundle tube. This solves the problem that dissolved substances precipitate and deposit on the pipe wall. As the scale layer thickness increases, the thermal resistance increases, leading to a deterioration in the overall heat transfer performance of the heat exchanger and affecting the stability and efficiency of the process.

[0018] 2. This invention uses a drive motor to periodically reverse the transmission shaft, thereby causing the scraper ring to reciprocate linearly, thus cleaning the scale on the surface of the bundle tube. The cleaned scale will move with the cooling liquid or heating liquid into the left end cap. The cooling liquid or heating liquid will pass through the filter screen and be discharged from the outlet pipe, while the scale will be filtered onto the inner wall of the filter screen. The rotation of the transmission shaft will drive the scraper to rotate, and the rotating scraper will scrape the scale on the inner wall of the filter screen into the dust collection shell for collection, thereby preventing the filter screen from being blocked.

[0019] 3. This invention uses an electromagnetic ring to attract or repel a permanent magnet ring, thereby driving a gear to rotate. The gear, through a connecting rod, causes a rotating plate to deflect at a certain angle. The deflection angle of the rotating plate is matched with the rotation direction of the transmission shaft, driving the motor to work and causing the transmission shaft to rotate forward, thereby driving the stirring blade to rotate. At the same time, it will drive multiple rotating plates to rotate, thereby agitating the cooling liquid or heating liquid, further increasing its contact time with the bundle tube, and making its temperature mixing more uniform, thus improving heat exchange efficiency. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the drawings described below are merely some exemplary embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the exemplary embodiments of the present invention and these drawings without any creative effort.

[0021] Figure 1 This is a schematic diagram of the overall appearance of the invention;

[0022] Figure 2 This is a half-sectional schematic diagram of the outer casing of the present invention;

[0023] Figure 3 This is a half-sectional schematic diagram of the end cap of the present invention;

[0024] Figure 4 This is a schematic diagram of a half-section of the bundle tube of the present invention;

[0025] Figure 5 This is a half-sectional view of the shaft of the present invention;

[0026] Figure 6 This is a schematic cross-sectional view of the sliding cavity half of the present invention;

[0027] Figure 7 This is a schematic diagram of the transmission shaft structure of the present invention.

[0028] In the diagram: 1. Outer shell; 2. End cap; 3. Outer liquid pipe; 4. Outer liquid inlet pipe; 5. Drive motor; 6. Transmission shaft; 7. Threaded sleeve; 8. Moving plate; 9. Scraper ring; 10. Stirring mechanism; 101. Connecting ring; 102. Shaft body; 103. Ring cavity; 104. Sliding cavity; 105. Connecting rod; 106. Rotating plate; 107. Gear; 108. Electromagnetic ring; 109. Permanent magnet ring; 1010. Rack; 11. Scraper; 12. Liquid ring; 13. Bundle tube; 14. Connecting block; 15. Inner liquid outlet pipe; 16. Inner liquid inlet pipe; 17. Stirring blade; 18. Mounting ring; 19. Filter screen; 20. Ash collection shell; 21. Slide groove. Detailed Implementation

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to the invention; these do not represent the actual structure of the product. Furthermore, for ease of understanding, in some drawings, only one of components with the same structure or function is schematically shown, or only one is labeled. In this document, "one" not only means "only one," but can also mean "more than one," and "several" includes "two" and "more than two."

[0031] In this document, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral connections; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium; and they can refer to the internal communication between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0032] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0033] In the description of this embodiment, terms such as "upper," "lower," "left," and "right" are based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of description and simplification of operation, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention.

[0034] Furthermore, in the description of this application, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] Please see Figure 1-7This application discloses a heat exchanger for sulfide production, including a shell 1, with end caps 2 fixedly connected to both ends of the shell 1. An outgoing liquid pipe 3 is fixedly connected to the upper part of the left end cap 2, and an outgoing liquid inlet pipe 4 is fixedly connected to the lower part of the right end cap 2. A drive motor 5 is fixedly installed on the right side of the right end cap 2. A transmission shaft 6 is fixedly connected to the output shaft of the drive motor 5. A threaded sleeve 7 is threadedly connected to the middle of the transmission shaft 6. A movable plate 8 is fixedly connected to the curved surface of the threaded sleeve 7. Multiple scraper rings 9 are fixedly installed inside the movable plate 8. An agitation mechanism 10 is installed on the right side of the threaded sleeve 7. A scraper 11 is fixedly installed on the left end of the transmission shaft 6.

[0036] Two liquid rings 12 are connected by multiple bundle tubes 13. Multiple connecting blocks 14 are fixedly connected to the curved surfaces of the two liquid rings 12. An inner liquid outlet pipe 15 is connected to the upper part of the left liquid ring 12, and an inner liquid inlet pipe 16 is connected to the lower part of the right liquid ring 12.

[0037] Its function is to drive the drive motor 5 to work, which drives the transmission shaft 6 to rotate in both directions. Since the threaded sleeve 7 is threadedly connected to the transmission shaft 6, and the scraper ring 9 is slidably connected to the bundle tube 13, the threaded sleeve 7 will drive the moving plate 8 and the scraper ring 9 to move left and right. This will scrape off the scale generated by the disturbed cooling liquid or heating liquid inside the outer shell 1 during the heat exchange with the liquid inside the bundle tube 13. This solves the problem that dissolved substances precipitate and deposit on the pipe wall. As the scale layer thickness increases, the thermal resistance increases, which leads to a deterioration in the overall heat transfer performance of the heat exchanger and affects the stability and efficiency of the process.

[0038] The right end of the drive shaft 6 is fixedly connected to a stirring blade 17, the inside of the left end cover 2 is fixedly connected to a mounting ring 18, a filter screen 19 is movably installed in the middle of the mounting ring 18, and a dust collection shell 20 is movably installed at the bottom of the filter screen 19.

[0039] The stirring mechanism 10 includes a connecting ring 101. A shaft 102 is fixedly connected to the right side of the connecting ring 101. The shaft 102 has an annular cavity 103 and multiple sliding cavities 104 inside. A connecting rod 105 is rotatably installed inside the sliding cavity 104. A rotating plate 106 is fixedly connected to the outer end of the connecting rod 105. A gear 107 is fixedly installed at the inner end of the sliding cavity 104. An electromagnetic ring 108 and a permanent magnet ring 109 are arranged inside the annular cavity 103. Multiple racks 1010 are fixedly connected to the left side of the permanent magnet ring 109.

[0040] Its function is to attract or repel the permanent magnet ring 109 by energizing the electromagnetic ring 108, thereby driving the gear 107 to rotate. The gear 107 will drive the rotating plate 106 to deflect at a certain angle through the connecting rod 105. The deflection angle of the rotating plate 106 will match the rotation direction of the transmission shaft 6, drive the motor 5 to work, drive the transmission shaft 6 to rotate forward, thereby driving the stirring blade 17 to rotate. At the same time, it will drive multiple rotating plates 106 to rotate, thereby stirring the cooling liquid or heating liquid, further increasing its contact time with the bundle tube 13, and making its temperature more uniform, thus improving the heat exchange efficiency.

[0041] The transmission shaft 6 has a thread in the middle and multiple circumferentially spaced grooves 21 on its curved surface. The transmission shaft 6 is rotatably connected to the end caps 2 on both sides. Its function is to allow the shaft body 102 to slide in the multiple grooves 21 on the curved surface of the transmission shaft 6, so that the shaft body 102 is driven by the transmission shaft 6 to rotate and moves with the threaded sleeve 7 under the drive of the threaded sleeve 7.

[0042] The scraper ring 9 is slidably sleeved on the curved surface of the bundle tube 13, the scraper 11 is adapted to the inner curved surface of the filter screen 19, the middle part of the filter screen 19 is rotatably connected to the drive shaft 6, and the bottom of the filter screen 19 has a notch. Its function is to drive the drive shaft 6 to periodically reverse through the drive motor 5, thereby driving the scraper ring 9 to reciprocate linearly, thereby cleaning the scale on the surface of the bundle tube 13. The rotation of the drive shaft 6 will drive the scraper 11 to rotate, and the rotating scraper 11 will scrape the scale on the inner wall of the filter screen 19 into the interior of the dust collection shell 20.

[0043] Among them, multiple connecting blocks 14 are fixedly connected to the inner wall of the outer shell 1, and the inner liquid outlet pipe 15 and the inner liquid inlet pipe 16 penetrate the inner wall of the outer shell 1.

[0044] The threaded sleeve 7 has a rotating groove on its right side, the connecting ring 101 is located inside the rotating groove, and the shaft 102 is slidably connected to multiple sliding grooves 21.

[0045] In this configuration, rack 1010 meshes with gear 107, and both rack 1010 and gear 107 are located inside sliding cavity 104, with rack 1010 and sliding cavity 104 being slidably connected.

[0046] The electromagnetic ring 108 is fixedly connected to the inner wall of the ring cavity 103. The permanent magnet ring 109 is located to the left of the electromagnetic ring 108 and is slidably connected to the ring cavity 103. Its function is that the electromagnetic ring 108 is energized in both directions, thereby attracting or repelling the permanent magnet ring 109, thereby driving the gear 107 to rotate. The gear 107 will drive the rotating plate 106 to deflect at a certain angle through the connecting rod 105. The deflection angle of the rotating plate 106 will be adapted to the rotation direction of the transmission shaft 6.

[0047] Working principle:

[0048] During sulfide production, high-temperature waste gas or other byproducts are supplied to the inside of the liquid ring 12 on the right side through the inner liquid inlet pipe 16, then enter the inside of multiple bundle tubes 13, and finally enter the inside of the bundle tube 13 on the left side and are discharged through the inner liquid outlet pipe 15; while the cooling liquid or heating liquid enters the inside of the right end cover 2 from the outer liquid inlet pipe 4, then flows through the outer shell 1 to the inside of the left end cover 2, and is finally discharged from the outer liquid outlet pipe 3.

[0049] When the cooling liquid or heating liquid enters the interior of the right end cover 2, the drive motor 5 works, driving the transmission shaft 6 to rotate forward, thereby driving the stirring blade 17 to rotate, thus rotating the cooling liquid or heating liquid inside the right end cover 2. Due to the continuous entry of liquid, the liquid will spiral forward inside the outer shell 1, thereby increasing the contact time between the liquid and the curved surface of the bundle tube 13. Since the threaded sleeve 7 is threadedly connected to the transmission shaft 6, and the scraper ring 9 is slidably connected to the bundle tube 13, the threaded sleeve 7 will drive the moving plate 8 and the scraper ring 9 to move to the right. Since the shaft body 102 is slidably connected to the multiple sliding grooves 21 on the curved surface of the transmission shaft 6, the shaft body 102 is driven by the transmission shaft 6 to rotate, and moves with the threaded sleeve 7 under the drive of the threaded sleeve 7.

[0050] Before determining the direction of rotation of the drive motor 5, the electromagnetic ring 108 is energized in both directions, thereby attracting or repelling the permanent magnet ring 109, which in turn drives the gear 107 to rotate. The gear 107 will drive the rotating plate 106 to deflect at a certain angle through the connecting rod 105. The deflection angle of the rotating plate 106 will be matched with the rotation direction of the drive shaft 6, stirring the cooling liquid or heating liquid, further increasing its contact time with the bundle tube 13, and making its temperature more uniform, thereby improving the heat exchange efficiency.

[0051] When the cooling or heating liquid inside the outer shell 1 comes into contact with the curved surface of the bundle tube 13, the liquid inside and outside the bundle tube 13 exchanges heat through the bundle tube 13. During this process, scale easily forms on the outer curved surface of the bundle tube 13. The drive motor 5 drives the transmission shaft 6 to periodically reverse, thereby driving the scraper ring 9 to reciprocate linearly, thus cleaning the scale on the surface of the bundle tube 13. This prevents the scale layer from increasing in thickness, increasing thermal resistance, and causing the overall heat transfer performance of the heat exchanger to deteriorate, affecting the stability and efficiency of the process. Secondly, the scale layer also leads to a decrease in heat transfer efficiency. In order to maintain the same production rate or reach the required temperature conditions, the system needs to consume more energy to heat or cool the medium, which directly leads to an increase in energy costs. Moreover, uneven scaling can cause local overheating or stress concentration in the heat exchanger, especially in high-temperature and high-pressure working environments, increasing the risk of equipment failure or damage.

[0052] The scale removed will move with the cooling or heating liquid into the left end cap 2. The cooling or heating liquid will pass through the filter screen 19 and be discharged from the outlet pipe 3. The scale will be filtered onto the inner wall of the filter screen 19. The rotation of the drive shaft 6 will drive the scraper 11 to rotate. The rotating scraper 11 will scrape the scale on the inner wall of the filter screen 19 into the dust collection shell 20, thereby preventing the filter screen 19 from being blocked.

[0053] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A heat exchanger for sulfide production, comprising a shell (1), characterized in that, Both ends of the outer shell (1) are fixedly connected to end caps (2). The upper part of the left end cap (2) is fixedly connected to an outflow liquid pipe (3), and the lower part of the right end cap (2) is fixedly connected to an inflow liquid pipe (4). A drive motor (5) is fixedly installed on the right side of the right end cap (2). The output shaft of the drive motor (5) is fixedly connected to a transmission shaft (6). A threaded sleeve (7) is threadedly connected to the middle of the transmission shaft (6). A moving plate (8) is fixedly connected to the curved surface of the threaded sleeve (7). Multiple scraper rings (9) are fixedly installed inside the moving plate (8). A stirring mechanism (10) is installed on the right side of the threaded sleeve (7). A scraper (11) is fixedly installed on the left end of the transmission shaft (6). Two liquid rings (12), with multiple bundle tubes (13) connecting the two liquid rings (12), and multiple connecting blocks (14) fixedly connected to the curved surfaces of the two liquid rings (12). The upper part of the liquid ring (12) on the left is connected to an inner liquid outlet pipe (15), and the lower part of the liquid ring (12) on the right is connected to an inner liquid inlet pipe (16). The stirring mechanism (10) includes a connecting ring (101), a shaft (102) is fixedly connected to the right side of the connecting ring (101), an annular cavity (103) and multiple sliding cavities (104) are opened inside the shaft (102), a connecting rod (105) is rotatably installed inside the sliding cavity (104), a rotating plate (106) is fixedly connected to the outer end of the connecting rod (105), a gear (107) is fixedly installed at the inner end of the sliding cavity (104), an electromagnetic ring (108) and a permanent magnet ring (109) are arranged inside the annular cavity (103), and multiple racks (1010) are fixedly connected to the left side of the permanent magnet ring (109). The drive shaft (6) is provided with a thread in the middle, and the curved surface of the drive shaft (6) is provided with multiple circumferentially equidistant sliding grooves (21). The drive shaft (6) is rotatably connected to the end caps (2) on both sides. The right side of the threaded sleeve (7) is provided with a rotating groove, the connecting ring (101) is located inside the rotating groove, and the shaft (102) is slidably connected to multiple sliding grooves (21). The rack (1010) meshes with the gear (107), and both the rack (1010) and the gear (107) are located inside the sliding cavity (104). The rack (1010) and the sliding cavity (104) are slidably connected. The electromagnetic ring (108) is fixedly connected to the inner wall of the ring cavity (103), and the permanent magnet ring (109) is located on the left side of the electromagnetic ring (108) and is slidably connected to the ring cavity (103).

2. A heat exchanger for sulfide production according to claim 1, characterized in that, A stirring blade (17) is fixedly connected to the right end of the drive shaft (6), and an installation ring (18) is fixedly connected inside the end cover (2) on the left side. A filter screen (19) is movably installed in the middle of the installation ring (18), and a dust collection shell (20) is movably installed at the bottom of the filter screen (19).

3. A heat exchanger for sulfide production according to claim 2, characterized in that, The scraper ring (9) is slidably sleeved on the curved surface of the bundle tube (13), and the scraper (11) is adapted to the inner curved surface of the filter screen (19).

4. A heat exchanger for sulfide production according to claim 3, characterized in that, The middle part of the filter screen (19) is rotatably connected to the drive shaft (6), and a notch is provided at the bottom of the filter screen (19).

5. A heat exchanger for sulfide production according to claim 4, characterized in that, Multiple connecting blocks (14) are fixedly connected to the inner wall of the outer shell (1), and the inner liquid outlet pipe (15) and the inner liquid inlet pipe (16) penetrate the inner wall of the outer shell (1).

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