Calcium hydroxide flue gas desulfurization device

Abstract

The utility model discloses a calcium hydroxide flue gas desulfurization device, including desulfurization box and drive seat, the central position of desulfurization box top end is installed with drive seat, the sidewall of drive seat is installed with step motor, the output of step motor is installed with worm, the top of drive seat is installed with adapter sleeve, the central position of desulfurization box inside is provided with the stirring rod, and stirring rod penetrates drive seat and extends to the inside of adapter sleeve and is connected with adapter sleeve swing, the stirring rod surface of worm one side is equipped with worm wheel, and worm wheel and worm are interlocked, the sidewall of stirring rod is provided with air inlet pipe. The utility model not only has realized the convenient circumferential rotation stirring calcium hydroxide solution and made it with flue gas even contact, has facilitated the quick dismounting of filter block and has replaced and the convenience of circumferential rotation scraping and cleaning the precipitate adhered on the inner wall, and has improved the effect of flue gas desulfurization and the convenience of cleaning precipitate.

Description

Technical Field

[0001] This utility model relates to the field of sulfur-containing flue gas treatment technology, specifically a calcium hydroxide flue gas desulfurization device. Background Technology

[0002] Flue gas desulfurization (FGD) technology, as an important means of reducing sulfur dioxide emissions, has received widespread attention and application in recent years. Calcium hydroxide, as a commonly used desulfurizing agent, plays an important role in FGD. Calcium hydroxide is a white powder that is easily soluble in water and slightly alkaline. In FGD, the main function of calcium hydroxide is to react with sulfur dioxide to form calcium sulfate, thereby achieving the purpose of desulfurization. Dry or wet desulfurization methods can be used for FGD, but the efficiency of dry desulfurization is relatively low. In order to improve the efficiency of desulfurization, a calcium hydroxide flue gas desulfurization device is proposed.

[0003] For example, the dry flue gas desulfurization device using calcium hydroxide disclosed in the authorization announcement number CN219942346U includes a desulfurization reaction tower. The lower end of the desulfurization reaction tower is connected to an inlet pipe, and the upper end of the desulfurization reaction tower is connected to an outlet pipe. An induced draft fan and a calcium hydroxide conveying system are sequentially arranged on the inlet pipe. The desulfurization reaction tower is connected to a dust collector through the outlet pipe, and the dust collector is connected to a dust collection fan. The desulfurization reaction tower includes an outer cylinder connected to the outlet pipe and an inner cylinder vertically arranged inside the outer cylinder. The top of the inner cylinder is open, and a connecting pipe is vertically arranged at the bottom of the inner cylinder. The bottom of the connecting pipe is connected to the inlet pipe.

[0004] Although it achieves high utilization rate and good desulfurization effect of calcium hydroxide desulfurizing agent, it does not solve the problem that existing desulfurization devices are not conducive to convenient circumferential rotation and stirring of calcium hydroxide solution to ensure uniform contact with flue gas, nor to quick disassembly and replacement of filter blocks and circumferential scraping to clean the deposits adhering to the inner wall, thus affecting the flue gas desulfurization effect and the convenience of cleaning deposits. Utility Model Content

[0005] The purpose of this invention is to provide a calcium hydroxide flue gas desulfurization device to solve the problems mentioned in the background art, such as the inconvenience of rotating and stirring the calcium hydroxide solution to ensure uniform contact with the flue gas, the difficulty in quickly disassembling and replacing the filter block, and the difficulty in rotating and scraping to clean the deposits adhering to the inner wall, which affect the flue gas desulfurization effect and the convenience of cleaning the deposits.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a calcium hydroxide flue gas desulfurization device, comprising a desulfurization box and a drive base. The drive base is installed at the center of the top of the desulfurization box. A stepper motor is installed on the side wall of the drive base, and a worm gear is installed at the output end of the stepper motor. An adapter sleeve is installed at the top of the drive base. A stirring rod is provided at the center of the interior of the desulfurization box, and the stirring rod extends through the drive base into the interior of the adapter sleeve and is movably connected to the adapter sleeve. A worm wheel is fitted on the surface of the stirring rod on one side of the worm gear, and the worm wheel meshes with the worm gear. An air inlet pipe is provided on the side wall of the stirring rod, and the air inlet pipe passes through the stirring rod and communicates with the adapter sleeve. Two sets of stirring blades are installed on the side wall of the stirring rod on one side of the air inlet pipe. Exhaust pipes are provided at the top of the desulfurization box on both sides of the drive base, and the exhaust pipes are connected to the desulfurization box. A limit ring is installed on the inner wall of the desulfurization box.

[0007] Preferably, each exhaust pipe has a filter block inside, and each filter block has multiple sets of equally spaced limiting blocks installed on its outer wall.

[0008] Preferably, the inner wall of the exhaust pipe is provided with multiple sets of L-shaped grooves at equal intervals, and the limiting block is slidably connected to the L-shaped groove.

[0009] Preferably, the limiting ring has a toothed ring inside, and the toothed ring is slidably connected to the limiting ring.

[0010] Preferably, the bottom end of the toothed ring is provided with multiple sets of equally spaced scraping plates, and the scraping plates are slidably connected to the inner wall of the desulfurization box.

[0011] Preferably, a servo motor is provided on the inner wall of the desulfurization box on one side of the limiting ring, and the servo motor is fixedly connected to the desulfurization box.

[0012] Preferably, the output end of the servo motor is equipped with a gear, and the gear meshes with the gear ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are: the desulfurization device not only realizes the convenient circumferential rotation stirring of calcium hydroxide solution to make it evenly contact the flue gas, which facilitates the quick disassembly and replacement of the filter block and the circumferential rotation scraping to clean the precipitates adhering to the inner wall, but also improves the flue gas desulfurization effect and the convenience of cleaning precipitates.

[0014] Calcium hydroxide powder is dissolved in water to form a calcium hydroxide solution. This solution is poured into the desulfurization chamber. Sulfur-containing flue gas is connected to the transfer sleeve. The flue gas enters the solution through the transfer sleeve and inlet pipe. The calcium hydroxide in the solution reacts with the sulfur dioxide in the flue gas, removing some of the sulfur. To ensure more uniform contact between the flue gas and the solution, a stepper motor drives a worm gear to rotate. The worm gear, through a worm wheel, drives a stirring rod, which in turn drives stirring blades. The stirring blades agitate the solution, further improving the desulfurization effect by ensuring more uniform contact between the flue gas and the solution. The desulfurized gas exits from the solution... The gas exits through the exhaust pipe after being filtered by the filter block. The filter block can filter dust and other impurities in the flue gas. When the filter block needs to be replaced after a long period of use, rotate the filter block counterclockwise. The filter block will drive the limiting block to move inside the L-shaped groove. When the limiting block moves to the turning position of the L-shaped groove, pull the filter block upward to remove it. Then replace it with a new filter block and reinstall it. This achieves convenient circumferential rotation and stirring of calcium hydroxide solution to ensure uniform contact with the flue gas, which facilitates quick disassembly and replacement of the filter block and improves the flue gas desulfurization effect.

[0015] When sulfur dioxide in the flue gas reacts with calcium hydroxide, precipitates are produced. When cleaning is needed, the valve at the bottom of the desulfurization tank can be opened to discharge the solution and precipitates. To prevent precipitates from adhering to the inner wall of the desulfurization tank, a servo motor drives a gear to rotate, which in turn drives a toothed ring to rotate, which in turn drives a scraper to rotate. The scraper then scrapes the inner wall of the desulfurization tank to remove the precipitates adhering to it, thus achieving convenient circumferential rotation and scraping to clean the precipitates and improving the ease of cleaning. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a frontal cross-sectional view of the present invention.

[0018] Figure 3 This is a three-dimensional structural diagram of the exhaust pipe and filter block of this utility model;

[0019] Figure 4 This is a three-dimensional perspective structural diagram of the desulfurization box of this utility model;

[0020] Figure 5 This is a three-dimensional structural diagram of the scraper plate of this utility model.

[0021] In the diagram: 1. Desulfurization box; 2. Drive base; 3. Exhaust pipe; 4. Adapter sleeve; 5. Stepper motor; 6. Worm gear; 7. Worm wheel; 8. Stirring rod; 9. Stirring blade; 10. Inlet pipe; 11. Scraper; 12. Limiting block; 13. L-shaped groove; 14. Filter block; 15. Limiting ring; 16. Servo motor; 17. Gear; 18. Gear ring. 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. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.

[0023] Please see Figure 1-5 This utility model provides an embodiment of a calcium hydroxide flue gas desulfurization device, comprising a desulfurization box 1 and a drive base 2. The drive base 2 is installed at the center of the top of the desulfurization box 1. A stepper motor 5 is installed on the side wall of the drive base 2, serving as the power drive. A worm gear 6 is installed at the output end of the stepper motor 5. An adapter sleeve 4 is installed at the top of the drive base 2. A stirring rod 8 is provided at the center of the interior of the desulfurization box 1, extending through the drive base 2 to the adapter sleeve 4. The internal structure is connected to the adapter sleeve 4. The surface of the stirring rod 8 on one side of the worm 6 is fitted with a worm wheel 7, and the worm wheel 7 meshes with the worm 6. An air inlet pipe 10 is provided on the side wall of the stirring rod 8, and the air inlet pipe 10 passes through the stirring rod 8 and is connected to the adapter sleeve 4. Two sets of stirring blades 9 are installed on the side wall of the stirring rod 8 on one side of the air inlet pipe 10. The top of the desulfurization box 1 on both sides of the drive seat 2 is provided with an exhaust pipe 3, and the exhaust pipe 3 is connected to the desulfurization box 1. A limit ring 15 is installed on the inner wall of the desulfurization box 1.

[0024] The exhaust pipe 3 is equipped with a filter block 14 inside, and multiple sets of equally spaced limiting blocks 12 are installed on the outer wall of the filter block 14. Multiple sets of equally spaced L-shaped grooves 13 are provided on the inner wall of the exhaust pipe 3, and the limiting blocks 12 and L-shaped grooves 13 are slidably connected.

[0025] Calcium hydroxide powder is dissolved in water to form a calcium hydroxide solution, which is then poured into the desulfurization tank 1. Sulfur-containing flue gas is connected to the transfer sleeve 4. The flue gas enters the solution through the transfer sleeve 4 and the inlet pipe 10. The calcium hydroxide in the solution reacts with the sulfur dioxide in the flue gas, removing some of the sulfur. To ensure more uniform contact between the flue gas and the solution, the stepper motor 5 is activated, driving the worm gear 6 to rotate. The worm gear 6 meshes with the worm wheel 7, which in turn drives the stirring rod 8 to rotate. The stirring rod 8 then drives the stirring blades 9 to rotate, agitating the solution and thus improving the desulfurization effect by ensuring more uniform contact between the flue gas and the solution. The desulfurization process is complete. Gas emerges from the solution, passes through filter block 14, and is discharged from exhaust pipe 3. Filter block 14 can filter dust and other impurities in the flue gas. When filter block 14 needs to be replaced after long-term use, rotate filter block 14 counterclockwise. Filter block 14 drives limit block 12 to move inside L-shaped groove 13. When limit block 12 moves to the turning position of L-shaped groove 13, pull filter block 14 upward to remove it. Then replace it with a new filter block 14 and reinstall it. This achieves convenient circumferential rotation and stirring of calcium hydroxide solution to ensure uniform contact with flue gas, facilitates quick disassembly and replacement of filter blocks, and improves the flue gas desulfurization effect.

[0026] The limiting ring 15 is provided with a toothed ring 18 inside, and the toothed ring 18 is slidably connected to the limiting ring 15. The bottom end of the toothed ring 18 is provided with multiple sets of scraper plates 11 at equal intervals, and the scraper plates 11 are slidably connected to the inner wall of the desulfurization box 1.

[0027] A servo motor 16 is installed on the inner wall of the desulfurization box 1 on one side of the limit ring 15. The servo motor 16 plays the role of power drive and is fixedly connected to the desulfurization box 1. A gear 17 is installed at the output end of the servo motor 16 and the gear 17 meshes with the gear ring 18.

[0028] When sulfur dioxide in flue gas reacts with calcium hydroxide, it produces precipitates. When cleaning is required, the valve at the bottom of the desulfurization tank 1 can be opened to discharge the solution and the precipitates. To prevent the precipitates from adhering to the inner wall of the desulfurization tank 1, the servo motor 16 is turned on, which drives the gear 17 to rotate. Under the meshing of the gear 17 and the gear ring 18, and the sliding engagement between the gear ring 18 and the limiting ring 15, the gear 17 drives the gear ring 18 to rotate, which in turn drives the scraper plate 11 to rotate. The scraper plate 11 then scrapes the inner wall of the desulfurization tank 1 to remove the precipitates adhering to the inner wall, thus preventing the precipitates from adhering to the inner wall. This achieves convenient circumferential rotation scraping to clean the precipitates, improving the ease of cleaning.

[0029] Working Principle: Calcium hydroxide powder is dissolved in water to form a calcium hydroxide solution. This solution is poured into the desulfurization chamber 1. Sulfur-containing flue gas is connected to the adapter sleeve 4. The flue gas enters the solution through the adapter sleeve 4 and the inlet pipe 10. The calcium hydroxide in the solution reacts with the sulfur dioxide in the flue gas, removing some of the sulfur. To ensure more uniform contact between the flue gas and the solution, a stepper motor 5 drives a worm gear 6 to rotate. The worm gear 6, through a worm wheel 7, drives a stirring rod 8 to rotate. The stirring rod 8 drives a stirring blade 9 to rotate, which stirs the solution, thus improving the desulfurization effect. The desulfurized gas exits the solution, passes through a filter block 14, and is discharged through the exhaust pipe 3. The filter block 14 filters dust and other impurities in the flue gas. When the filter block 14 needs to be replaced after prolonged use, it is rotated counterclockwise. The filter block 14 drives the limiting block 12 to move inside the L-shaped groove 13. When the limiting block 12 moves to the turning position of the L-shaped groove 13, the filter block 14 is pulled upward to remove it. Then, a new filter block 14 can be replaced and reinstalled. After the sulfur dioxide in the flue gas reacts with calcium hydroxide, it will produce precipitates. When it is necessary to clean them, the valve at the bottom of the desulfurization box 1 can be opened to discharge the solution and the precipitates in the solution. In order to prevent the precipitates from adhering to the inner wall of the desulfurization box 1, the servo motor 16 drives the gear 17 to rotate, the gear 17 drives the gear ring 18 to rotate, and the gear ring 18 drives the scraper 11 to rotate. The scraper 11 scrapes the inner wall of the desulfurization box 1 to remove the precipitates adhering to the inner wall of the desulfurization box 1. The above is the complete usage of the calcium hydroxide flue gas desulfurization device.

Claims

1. A calcium hydroxide flue gas desulfurization device, comprising a desulfurization box (1) and a drive base (2), characterized in that: A drive base (2) is installed at the center of the top of the desulfurization box (1). A stepper motor (5) is installed on the side wall of the drive base (2). A worm gear (6) is installed at the output end of the stepper motor (5). An adapter sleeve (4) is installed at the top of the drive base (2). An agitator (8) is provided at the center of the interior of the desulfurization box (1). The agitator (8) extends through the drive base (2) into the interior of the adapter sleeve (4) and is movably connected to the adapter sleeve (4). The surface of the agitator (8) on one side of the worm gear (6) is fitted with a sleeve. There is a worm gear (7), and the worm gear (7) meshes with the worm (6). An air inlet pipe (10) is provided on the side wall of the stirring rod (8), and the air inlet pipe (10) passes through the stirring rod (8) and is connected to the adapter sleeve (4). Two sets of stirring blades (9) are installed on the side wall of the stirring rod (8) on one side of the air inlet pipe (10). An exhaust pipe (3) is provided at the top of the desulfurization box (1) on both sides of the drive seat (2), and the exhaust pipe (3) is connected to the desulfurization box (1). A limit ring (15) is installed on the inner wall of the desulfurization box (1).

2. The calcium hydroxide flue gas desulfurization device according to claim 1, characterized in that: The exhaust pipe (3) is equipped with a filter block (14) inside, and multiple sets of limit blocks (12) with equal spacing are installed on the outer wall of the filter block (14).

3. The calcium hydroxide flue gas desulfurization device according to claim 1, characterized in that: The inner wall of the exhaust pipe (3) is provided with multiple sets of L-shaped grooves (13) at equal intervals, and the limiting block (12) is slidably connected to the L-shaped groove (13).

4. The calcium hydroxide flue gas desulfurization device according to claim 1, characterized in that: The limiting ring (15) is provided with a toothed ring (18) inside, and the toothed ring (18) is slidably connected to the limiting ring (15).

5. The calcium hydroxide flue gas desulfurization device according to claim 4, characterized in that: The bottom end of the toothed ring (18) is provided with multiple sets of equally spaced scraper plates (11), and the scraper plates (11) are slidably connected to the inner wall of the desulfurization box (1).

6. The calcium hydroxide flue gas desulfurization device according to claim 1, characterized in that: A servo motor (16) is provided on the inner wall of the desulfurization box (1) on one side of the limiting ring (15), and the servo motor (16) is fixedly connected to the desulfurization box (1).

7. A calcium hydroxide flue gas desulfurization device according to claim 6, characterized in that: The output end of the servo motor (16) is equipped with a gear (17), and the gear (17) meshes with the gear ring (18).

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