A flue gas acid converter

Abstract

The application discloses a kind of flue gas acid converter, including tank body, the tank body is provided with flue gas conversion mechanism, the flue gas conversion mechanism includes multiple heat exchange tubes, the heat exchange tube is filled with reaction catalyst, the tank body is provided with the heat exchange mechanism for being inserted into flue gas conversion mechanism and being used to transfer heat exchange tube heat, the tank body is movably provided with the air direction guiding mechanism for guiding the flow direction of heat exchange air in heat exchange tube.The application, by setting heat exchange mechanism input heat exchange air, take away the heat generated when flue gas conversion mechanism reaction, by setting air direction guiding mechanism and the cleaning mechanism for cleaning adherend outside heat exchange tube cooperating with air direction guiding mechanism, so that cleaning mechanism can also synchronously drive air direction guiding mechanism to guide heat dissipation air to cover catalyst bed layer comprehensively while cleaning heat exchange tube, reduce the probability that catalyst bed layer appears over-temperature condition, ensure that flue gas conversion mechanism can long time stable operation.

Description

Technical Field

[0001] This invention relates to the field of copper smelting flue gas acid production technology, and in particular to a flue gas acid production converter. Background Technology

[0002] The converter, as the core equipment in the copper smelting flue gas sulfuric acid production process, is the heart of the conversion of sulfur dioxide into sulfur trioxide. The chemical reactions occurring inside the converter release a large amount of heat, leading to temperature fluctuations within the converter. These temperature fluctuations affect the activity of the catalyst and the likelihood of converter damage.

[0003] Currently, although heat exchange equipment is installed in the center of the catalyst bed to carry away the heat generated during the reaction from the converter, due to unreasonable structural design, the heat exchange air is more likely to be discharged from the side near the air outlet. As a result, the heat exchange air cannot diffuse and cover all reaction areas after flowing into the catalyst bed, making the part of the catalyst bed far from the air outlet prone to overheating. At the same time, because the heat exchange air contains dust and other adhering substances, long-term use will cause the adhering substances to remain in the catalyst bed. If not cleaned in time, it will also lead to a decrease in heat exchange efficiency, causing the catalyst bed to overheat. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings mentioned above by providing a flue gas acid converter that improves the heat exchange air coverage and automatically cleans the catalyst bed.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: a flue gas acid converter, comprising a tank, wherein a flue gas conversion mechanism is provided inside the tank, the flue gas conversion mechanism includes a plurality of heat exchange tubes, the heat exchange tubes are filled with a reactive catalyst, a heat exchange mechanism is provided on the tank and inserted into the flue gas conversion mechanism for transferring heat from the heat exchange tubes, a wind direction guiding mechanism is movably provided inside the tank for guiding the flow direction of heat exchange air within the heat exchange tubes, and a cleaning mechanism is provided inside the tank that can cooperate with the wind direction guiding mechanism to clean the adhering substances on the outer wall of the heat exchange tubes.

[0006] Furthermore, the flue gas conversion mechanism also includes an upper partition plate and a lower partition plate disposed inside the tank. The upper partition plate and the lower partition plate divide the inner cavity of the tank into three sealed chambers: upper, middle and lower. Both the upper partition plate and the lower partition plate are rotatably connected to the heat exchange tube. The upper and lower ends of the heat exchange tube are respectively connected to the upper chamber and the lower chamber.

[0007] The top of the tank is provided with a flue gas inlet pipe that communicates with the upper chamber, and the outer wall of the tank is provided with a flue gas exhaust pipe that communicates with the lower chamber.

[0008] Furthermore, the heat exchange mechanism includes a central air supply pipe, the centerline of the central air supply pipe, the centerline of the upper partition plate, and the centerline of the lower partition plate are all on the same straight line, the upper and lower ends of the central air supply pipe are located in the middle chamber and the lower chamber respectively, the end of the central air supply pipe located in the middle chamber is provided with multiple air outlets communicating with the middle chamber, and the end of the central air supply pipe located in the lower chamber is provided with a heat exchange air inlet pipe that penetrates the tank body and extends to the outside of the tank body;

[0009] The outer wall of the tank is provided with a heat exchange air exhaust pipe that communicates with the middle chamber.

[0010] Furthermore, the wind direction guiding mechanism includes a collar, which is located between the upper partition plate and the lower partition plate. Multiple heat exchange tubes are located inside the collar. The collar has a connecting hole for the heat exchange gas to flow to the outside of the collar. A blocking strip that fits against the inner wall of the tank is provided on the side of the outer wall of the collar near the connecting hole.

[0011] Furthermore, the cleaning mechanism includes a toggle assembly for driving the heat exchange tubes to rotate and multiple strip brushes for cleaning the surface of the heat exchange tubes when they rotate. The toggle assembly is located in the upper chamber of the tank, and the multiple strip brushes are evenly distributed between the multiple heat exchange tubes.

[0012] Furthermore, the actuating assembly includes a motor disposed on the top of the upper partition plate, and the output end of the motor is provided with a actuating plate for actuating the heat exchange tube to rotate by friction during rotation.

[0013] The top height of the heat exchange tube is higher than the top height of the upper partition plate. The multiple heat exchange tubes are arranged in a ring shape, gradually forming a multi-layer heat exchange tube from the inside to the outside. The baffle plate includes a top plate and multiple arc-shaped plates located at the bottom of the top plate. The center lines of the multiple arc-shaped plates are all located on the same straight line, and the multiple arc-shaped plates are respectively located between two adjacent layers of heat exchange tubes.

[0014] Furthermore, the strip brush includes a sleeve disposed between the upper partition plate and the lower partition plate. The side wall of the sleeve is provided with a plurality of scraper strips that contact the adjacent heat exchange tubes. The side of the scraper strip away from the heat exchange tube is inserted into the sleeve. The side of the scraper strip located inside the sleeve is provided with a boss for preventing the scraper strip from coming out of the sleeve. The side of the boss near the sleeve is provided with a plurality of spring plates. When the spring plates are in the natural state, the scraper strip does not contact the heat exchange tube. The top of the sleeve is provided with a push rod that is inserted into the sleeve and used to push the scraper strip toward the heat exchange tube.

[0015] The push rod is located at the top of the upper partition plate, and when the spring sheet is in its natural state, the top of the push rod is located above the top of the heat exchange tube.

[0016] Furthermore, the upper partition plate consists of an inner plate and an outer plate sleeved outside the inner plate. Multiple heat exchange tubes are connected to the inner plate, and the upper and lower sides of the outer plate are respectively connected to a deflector and an airflow guiding mechanism.

[0017] The beneficial effects of this invention are reflected in:

[0018] This invention incorporates a heat exchange mechanism to input heat exchange air and remove the heat generated during the reaction in the flue gas conversion mechanism. It also includes an airflow guiding mechanism and a cleaning mechanism that works in conjunction with the airflow guiding mechanism to clean the outer wall of the heat exchange tubes. This allows the cleaning mechanism to simultaneously drive the airflow guiding mechanism to guide the heat dissipation air to fully cover the catalyst bed, reducing the probability of the catalyst bed overheating and ensuring the flue gas conversion mechanism can operate stably for extended periods. Attached Figure Description

[0019] Figure 1 This is a perspective view of the present invention;

[0020] Figure 2 This is a structural view of the flue gas conversion mechanism, heat exchange mechanism, and wind direction guiding mechanism of the present invention;

[0021] Figure 3 This is a structural view of the heat exchange mechanism of the present invention;

[0022] Figure 4 This is a structural view of the wind direction guiding mechanism of the present invention;

[0023] Figure 5 This is a schematic diagram showing the installation positions of the heat exchange tube and the strip brush of the present invention;

[0024] Figure 6 This is a structural view of the dial plate of the present invention;

[0025] Figure 7 This is a structural view of the strip brush of the present invention;

[0026] Figure 8 This is a partial exploded view of the strip brush of the present invention.

[0027] In the picture:

[0028] 1. Tank body; 11. Flue gas inlet pipe; 12. Flue gas exhaust pipe; 13. Heat exchange air exhaust pipe; 2. Flue gas conversion mechanism; 21. Heat exchange tube; 22. Upper partition plate; 221. Inner plate; 222. Outer plate; 23. Lower partition plate; 3. Heat exchange mechanism; 31. Central gas supply pipe; 32. Gas outlet; 33. Heat exchange air inlet pipe; 4. Airflow guiding mechanism; 41. Collar; 42. Connecting hole; 43. Blocking strip; 5. Cleaning mechanism; 51. Actuating assembly; 511. Motor; 512. Actuating plate; 52. Strip brush; 521. Sleeve; 522. Scraper; 523. Spring plate; 524. Push rod. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of them. Unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] Please see Figure 1-8 This invention discloses a flue gas acid converter, including a tank 1, a flue gas conversion mechanism 2 disposed inside the tank 1, the flue gas conversion mechanism 2 including a plurality of heat exchange tubes 21, the heat exchange tubes 21 being filled with a reaction catalyst, a heat exchange mechanism 3 disposed on the tank 1 and inserted into the flue gas conversion mechanism 2 for transferring heat from the heat exchange tubes 21, a wind direction guiding mechanism 4 disposed movably inside the tank 1 for guiding the flow direction of the heat exchange air within the heat exchange tubes 21, and a cleaning mechanism 5 disposed inside the tank 1 for cooperating with the wind direction guiding mechanism 4 to clean the adhering material on the outer wall of the heat exchange tubes 21.

[0031] This invention incorporates a heat exchange mechanism 3 to input heat exchange air and remove the heat generated during the reaction of the flue gas conversion mechanism 2. It also incorporates a wind direction guiding mechanism 4 and a cleaning mechanism 5 that works in conjunction with the wind direction guiding mechanism 4 to clean the outer wall of the heat exchange tube 21. This allows the cleaning mechanism 5 to simultaneously drive the wind direction guiding mechanism 4 to guide the heat dissipation air to fully cover the catalyst bed, reducing the probability of the catalyst bed overheating and ensuring the flue gas conversion mechanism 2 can operate stably for extended periods.

[0032] In one embodiment, the flue gas conversion mechanism 2 further includes an upper partition plate 22 and a lower partition plate 23 disposed inside the tank body 1. The upper partition plate 22 and the lower partition plate 23 divide the inner cavity of the tank body 1 into three sealed upper, middle and lower chambers. The upper partition plate 22 and the lower partition plate 23 are rotatably connected to the heat exchange tube 21. The upper and lower ends of the heat exchange tube 21 are respectively connected to the upper chamber and the lower chamber.

[0033] The top of the tank body 1 is provided with a flue gas inlet pipe 11 that communicates with the upper chamber, and the outer wall of the tank body 1 is provided with a flue gas exhaust pipe 12 that communicates with the lower chamber.

[0034] This design allows flue gas to enter the upper chamber from the flue gas inlet pipe 11, and then flow into the heat exchange pipe 21 to react with the reaction catalyst, converting the sulfur dioxide in the flue gas. The converted flue gas then flows into the lower chamber and is discharged through the flue gas exhaust pipe 12. Since the upper and lower chambers are connected only by the heat exchange pipe 21, it can be ensured that the discharged flue gas has undergone conversion treatment.

[0035] In practice, an air distribution plate located at the bottom of the flue gas inlet pipe 11 is installed in the upper chamber to distribute the flue gas entering the upper chamber evenly to multiple heat exchange tubes 21.

[0036] In one embodiment, the heat exchange mechanism 3 includes a central air supply pipe 31. The centerline of the central air supply pipe 31, the centerline of the upper partition plate 22, and the centerline of the lower partition plate 23 are all on the same straight line. The upper and lower ends of the central air supply pipe 31 are located in the middle chamber and the lower chamber, respectively. The end of the central air supply pipe 31 located in the middle chamber is provided with a plurality of air outlets 32 that communicate with the middle chamber. The end of the central air supply pipe 31 located in the lower chamber is provided with a heat exchange air inlet pipe 33 that penetrates the tank body 1 and extends to the outside of the tank body 1.

[0037] A heat exchange air exhaust pipe 13, which is connected to the middle chamber, is provided on the outer wall of the tank body 1.

[0038] This design allows the low-temperature heat exchange air from the outside to enter the central air supply pipe 31 through the heat exchange air inlet pipe 33. Inside the central air supply pipe 31, the air is first preheated by the flue gas entering the lower chamber to avoid structural damage caused by excessive temperature difference. Then, the air is discharged from the outlet 32 ​​into the middle chamber, where it comes into contact with multiple heat exchange tubes 21 to achieve heat exchange. The heated heat exchange air is then discharged from the heat exchange air exhaust pipe 13.

[0039] In one embodiment, the wind direction guiding mechanism 4 includes a collar 41, which is located between the upper partition plate 22 and the lower partition plate 23. Multiple heat exchange tubes 21 are located inside the collar 41. A connecting hole 42 is provided on the collar 41 to allow heat exchange gas to flow to the outside of the collar 41. A blocking strip 43 that fits against the inner wall of the tank 1 is provided on the side of the outer wall of the collar 41 near the connecting hole 42.

[0040] This design ensures that the heat exchange air entering the middle chamber can only be discharged through the connecting hole 42 of the collar 41 and the side without the blocking strip 43. When the collar 41 rotates and changes the position of the connecting hole 42, the coverage area of ​​the heat exchange air on the heat exchange tube 21 can be changed, thereby improving the coverage rate of the heat exchange air on the catalyst bed.

[0041] In one embodiment, the cleaning mechanism 5 includes a toggle assembly 51 for driving the heat exchange tube 21 to rotate and a plurality of strip brushes 52 for cleaning the surface of the heat exchange tube 21 when it rotates. The toggle assembly 51 is located in the upper chamber of the tank body 1, and the plurality of strip brushes 52 are evenly distributed among the plurality of heat exchange tubes 21.

[0042] This design utilizes the actuating component 51 to drive the heat exchange tube 21 to rotate. The rotating heat exchange tube 21 rubs against the strip brush 52, scraping off the adhering substances on the surface of the heat exchange tube 21.

[0043] In one embodiment, the actuating assembly 51 includes a motor 511 disposed on the top of the upper partition plate 22, and the output end of the motor 511 is provided with a actuating plate 512 for actuating the heat exchange tube 21 to rotate by friction during rotation.

[0044] The top height of the heat exchange tube 21 is higher than the top height of the upper partition plate 22. Multiple heat exchange tubes 21 are arranged in a ring shape and gradually form a multi-layer heat exchange tube 21 from the inside to the outside. The baffle plate 512 includes a top plate and multiple arc-shaped plates located at the bottom of the top plate. The center lines of the multiple arc-shaped plates are all located on the same straight line and the multiple arc-shaped plates are located between two adjacent layers of heat exchange tubes 21.

[0045] This design ensures that each movement of the actuating component 51 can drive multiple heat exchange tubes 21 within a certain angle to be cleaned together.

[0046] Preferably, in order to allow the scraped-off impurities to be discharged in a timely manner with the flow of heat exchange air, the side of the baffle plate 512 near the connecting hole 42 away from the blocking strip 43.

[0047] In practice, the motor 511 is connected to the dial plate 512 through a gearbox to slow down the rotation speed of the dial plate 512.

[0048] In one embodiment, the strip brush 52 includes a sleeve 521 disposed between the upper partition plate 22 and the lower partition plate 23. The side wall of the sleeve 521 is provided with a plurality of scraper strips 522 that are in contact with adjacent heat exchange tubes 21. The side of the scraper strips 522 away from the heat exchange tubes 21 is inserted into the sleeve 521. The side of the scraper strips 522 located in the sleeve 521 is provided with a boss for preventing the scraper strips 522 from coming out of the sleeve 521. The side of the boss near the sleeve 521 is provided with a plurality of spring plates 523. When the spring plates 523 are in the natural state, the scraper strips 522 are not in contact with the heat exchange tubes 21. The top of the sleeve 521 is provided with a push rod 524 that is inserted into the sleeve 521 and is used to push the scraper strips 522 toward the heat exchange tubes 21.

[0049] When push rod 524 is located on top of upper partition plate 22 and spring plate 523 is in its natural state, the top of push rod 524 is located above the top of heat exchange tube 21.

[0050] This design utilizes the rotation of the dial plate 512 to push the push rod 524 downward, causing the scraper 522 to contact the rotating heat exchange tube 21, thus achieving the effect of scraping off the adhering substances. After the dial plate 512 moves away from the push rod 524, the scraper 522 is pushed by the spring plate 523 to retract into the sleeve 521, providing space for the flow of heat exchange air.

[0051] In one embodiment, the upper partition plate 22 is composed of an inner plate 221 and an outer plate 222 sleeved outside the inner plate 221. Multiple heat exchange tubes 21 are connected to the inner plate 221, and the upper and lower sides of the outer plate 222 are respectively connected to the dial plate 512 and the airflow guiding mechanism 4.

[0052] This design allows the cleaning mechanism 5 and the airflow guiding mechanism 4 to work synchronously, improving the heat dissipation effect of the catalyst bed.

[0053] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0054] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. If the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0055] Additionally, "multiple" refers to two or more.

[0056] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A flue gas acid conversion device, characterized in that, The device includes a tank (1), a flue gas conversion mechanism (2) is provided inside the tank (1), the flue gas conversion mechanism (2) includes multiple heat exchange tubes (21), the heat exchange tubes (21) are filled with reactive catalysts, a heat exchange mechanism (3) is provided on the tank (1) and inserted into the flue gas conversion mechanism (2) for transferring heat from the heat exchange tubes (21), a wind direction guiding mechanism (4) is movably provided inside the tank (1) for guiding the flow direction of the heat exchange air in the heat exchange tubes (21), and a cleaning mechanism (5) is provided inside the tank (1) that can cooperate with the wind direction guiding mechanism (4) to clean the adhering substances on the outer wall of the heat exchange tubes (21). The flue gas conversion mechanism (2) also includes an upper partition plate (22) and a lower partition plate (23) disposed in the tank body (1). The upper partition plate (22) and the lower partition plate (23) divide the inner cavity of the tank body (1) into three sealed upper, middle and lower chambers. The upper partition plate (22) and the lower partition plate (23) are rotatably connected to the heat exchange tube (21). The upper and lower ends of the heat exchange tube (21) are respectively connected to the upper chamber and the lower chamber. The top of the tank (1) is provided with a flue gas inlet pipe (11) that communicates with the upper chamber, and the outer wall of the tank (1) is provided with a flue gas exhaust pipe (12) that communicates with the lower chamber. The wind direction guiding mechanism (4) includes a collar (41), which is located between the upper partition plate (22) and the lower partition plate (23). Multiple heat exchange tubes (21) are located inside the collar (41). A connecting hole (42) is provided on the collar (41) for the heat exchange gas to flow to the outside of the collar (41). A blocking strip (43) that fits against the inner wall of the tank (1) is provided on the side of the outer wall of the collar (41) near the connecting hole (42). The cleaning mechanism (5) includes a toggle assembly (51) for driving the heat exchange tube (21) to rotate and multiple strip brushes (52) for cleaning the surface of the heat exchange tube (21) when it rotates. The toggle assembly (51) is located in the upper chamber of the tank (1), and the multiple strip brushes (52) are evenly distributed between the multiple heat exchange tubes (21). The strip brush (52) includes a sleeve (521) disposed between the upper partition plate (22) and the lower partition plate (23). The side wall of the sleeve (521) is provided with a plurality of scraper strips (522) that are in contact with the adjacent heat exchange tubes (21). The side of the scraper strips (522) away from the heat exchange tubes (21) is inserted into the sleeve (521). The side of the scraper strips (522) located inside the sleeve (521) is provided with a boss for preventing the scraper strips (522) from coming out of the sleeve (521). The side of the boss near the sleeve (521) is provided with a plurality of spring plates (523). When the spring plates (523) are in the natural state, the scraper strips (522) are not in contact with the heat exchange tubes (21). The top of the sleeve (521) is provided with a push rod (524) that is inserted into the sleeve (521) and is used to push the scraper strips (522) toward the heat exchange tubes (21). The push rod (524) is located on top of the upper partition plate (22), and when the spring plate (523) is in its natural state, the top of the push rod (524) is above the top of the heat exchange tube (21).

2. The flue gas acid converter according to claim 1, characterized in that: The heat exchange mechanism (3) includes a central air supply pipe (31). The center line of the central air supply pipe (31), the center line of the upper partition plate (22), and the center line of the lower partition plate (23) are all on the same straight line. The upper and lower ends of the central air supply pipe (31) are located in the middle chamber and the lower chamber, respectively. The end of the central air supply pipe (31) located in the middle chamber is provided with multiple air outlets (32) that are connected to the middle chamber. The end of the central air supply pipe (31) located in the lower chamber is provided with a heat exchange air inlet pipe (33) that penetrates the tank body (1) and extends to the outside of the tank body (1). The outer wall of the tank (1) is provided with a heat exchange air exhaust pipe (13) that is connected to the middle chamber.

3. The flue gas acid converter according to claim 1, characterized in that: The actuating assembly (51) includes a motor (511) disposed on the top of the upper partition plate (22), and the output end of the motor (511) is provided with a actuating plate (512) for actuating the heat exchange tube (21) to rotate by friction during rotation. The top height of the heat exchange tube (21) is higher than the top height of the upper partition plate (22). The multiple heat exchange tubes (21) are arranged in a ring shape and gradually form a multi-layer heat exchange tube (21) from the inside to the outside. The baffle plate (512) includes a top plate and multiple arc-shaped plates located at the bottom of the top plate. The center lines of the multiple arc-shaped plates are all located on the same straight line and the multiple arc-shaped plates are respectively located between two adjacent layers of heat exchange tubes (21).

4. The flue gas acid converter according to claim 3, characterized in that: The upper partition plate (22) consists of an inner plate (221) and an outer plate (222) sleeved outside the inner plate (221). Multiple heat exchange tubes (21) are connected to the inner plate (221). The upper and lower sides of the outer plate (222) are connected to the dial plate (512) and the airflow guiding mechanism (4) respectively.

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