Desulfurization device for removing sulfur dioxide in flue gas

Abstract

The utility model discloses a desulfurization device for removing sulfur dioxide in flue gas, which comprises a reaction box, a material box is arranged at the top of the reaction box, a first compression roller and a second compression roller are rotatably arranged in the material box, a motor is fixedly arranged on the outer side of the material box, and the output end of the motor is fixedly connected with the first compression roller. A first transmission assembly is arranged between the first pressing roller and the second pressing roller, a connecting rod is rotationally arranged in the material box, and a second transmission assembly is arranged between the connecting rod and the second pressing roller. A second filter screen is fixedly arranged at the bottom in the material box, a sliding block is slidably arranged in the material box, a limiting block is fixedly arranged on the sliding block, the limiting block is slidably connected with the connecting rod, a plurality of extrusion convex blocks are fixedly arranged on the two sides of the sliding block, and the extrusion convex blocks are matched with the inner wall of the material box to extrude and crush large calcium carbonate; the two sides of the reaction box are provided with an atomization nozzle and an air inlet respectively, and an air supply assembly is arranged in the air inlet. And large calcium carbonate blocks are extruded and crushed twice, so that the crushing efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of desulfurization, in particular to a desulfurization device for removing sulfur dioxide from flue gas. Background Art

[0002] Sulfur dioxide is the most common and simplest sulfur oxide, with the chemical formula SO2. It is a colorless, transparent gas with a pungent odor. Desulfurization generally refers to the process of removing sulfur from fuel before combustion and the desulfurization process before flue gas emission. It is one of the important technical measures to prevent and control air pollution. When desulfurizing flue gas, a desulfurization device is needed.

[0003] A sulfur dioxide waste gas treatment device is disclosed in a Chinese patent document with publication number CN219580230U, comprising a main body, a carrying box is provided at the top of the main body, a feed bin is provided at one side of the top of the carrying box, a feeding pipe is provided at the bottom of the carrying box, a reaction bin is provided at the top of the inner wall of the main body, the feeding pipe extends to the inside of the reaction bin, a carrying plate is provided at the bottom of the inner wall of the reaction bin, atomizing nozzles and air supply pipes are provided on both sides of the inner wall of the reaction bin, an air supply mechanism is provided on one side of the main body, and a drying box is provided at the bottom of the inner wall of the main body. Sulfur dioxide gas is introduced into the interior of the reaction bin by a fan, and then the ground calcium carbonate is fed to the carrying plate inside the reaction bin through the feeding pipe. When calcium carbonate reacts with sulfur dioxide, the atomizing nozzle sprays water at this time, so that sulfur dioxide is oxidized to generate sulfurous acid, which then reacts with calcium carbonate.

[0004] The disadvantage of the above disclosed solution is that after the grinding wheel grinds the calcium carbonate, large pieces of calcium carbonate will fall on the second filter screen, so the calcium carbonate is not crushed well, resulting in large pieces of calcium carbonate not being able to participate in the desulfurization reaction, thereby affecting the desulfurization efficiency. Utility Model Content

[0005] The technical problem to be solved by the utility model is to overcome the existing defects and provide a desulfurization device for removing sulfur dioxide in flue gas. Large pieces of calcium carbonate are crushed by secondary extrusion through the cooperation of extrusion protrusions and the inner wall of the material box, which can effectively solve the problems in the background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a desulfurization device for removing sulfur dioxide from flue gas, comprising a reaction box, a material box is arranged on the top of the reaction box, a feed hopper is arranged on the top of the material box, a first pressure roller and a second pressure roller are rotatably arranged in the material box, a motor is fixedly arranged on the outer side of the material box, the output end of the motor is fixedly connected to the first pressure roller, a first transmission assembly is arranged between the first pressure roller and the second pressure roller, a connecting rod is rotatably arranged in the material box, and a second transmission assembly is arranged between the connecting rod and the second pressure roller; a second filter is fixedly arranged at the bottom of the material box, a sliding block is arranged above the second filter, a limit block is fixedly arranged on the top of the sliding block, the limit block is slidably connected to the connecting rod, a guide groove is opened in the material box, the guide groove is slidably connected to the sliding block, a plurality of extrusion protrusions are fixedly arranged on both sides of the sliding block, the extrusion protrusions cooperate with the inner wall of the material box to extrude and crush large pieces of calcium carbonate, an atomizing nozzle and an air inlet are respectively arranged on both sides of the reaction box, and an air supply assembly is arranged in the air inlet.

[0007] Furthermore, the first transmission assembly includes a first gear and a second gear, the first gear is coaxially fixedly connected to the first pressure roller, the second gear is coaxially fixedly connected to the second pressure roller, and the second gear is meshed with the first gear.

[0008] Furthermore, the second transmission assembly includes a first pulley and a second pulley, the first pulley is coaxially fixedly connected to the second pressure roller, the second pulley is fixedly connected to the connecting rod, and the second pulley and the first pulley are sleeved with the same transmission belt.

[0009] Furthermore, a support plate is fixedly arranged in the reaction box, an activated carbon layer is arranged on the top of the support plate, a heater is arranged below the support plate, and the heater is fixedly connected to the bottom wall of the reaction box.

[0010] Furthermore, a water tank is fixedly arranged on one side of the reaction box, a water pump is arranged on the water tank, and the water pump is connected to the atomizing nozzle through a water pipe.

[0011] Furthermore, the air supply component includes a fan, which is fixedly arranged in the air inlet, and a first filter is fixedly arranged at one end of the air inlet.

[0012] Furthermore, the cross-section of the top of the sliding block is triangular.

[0013] Furthermore, an opening is provided on one side of the reaction box, the opening is located above the support plate, and a cover plate is hingedly provided on the opening.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] Multiple extrusion convex blocks are fixedly arranged on both sides of the sliding block, and the extrusion convex blocks cooperate with the inner wall of the material box to squeeze and crush large pieces of calcium carbonate. The second pressure roller rotates while driving the first pulley to rotate, and the first pulley drives the second pulley to rotate through the transmission belt, and the second pulley rotates to drive the connecting rod to rotate, and the connecting rod drives the sliding block to move back and forth left and right. The sliding block uses the extrusion convex blocks to cooperate with the inner wall of the material box to crush the large pieces of calcium carbonate that are not crushed completely by the first and second pressure rollers. By extruding and crushing large pieces of calcium carbonate twice, the crushing efficiency is improved, the reaction amount of calcium carbonate is increased, and the desulfurization efficiency is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional diagram of the structure of the utility model;

[0017] Figure 2 It is a stereogram of the structure of the utility model from different viewing angles;

[0018] Figure 3 It is a cross-sectional view of the structure of the utility model;

[0019] Figure 4 It is an enlarged view of point A of the structure of the utility model;

[0020] Figure 5 It is an exploded view of the sliding block and the limiting block of the structure of the utility model.

[0021] In the figure: 1. feed hopper; 2. material box; 3. first gear; 4. first pressure roller; 5. second gear; 6. second pressure roller; 7. reaction box; 8. air inlet; 9. water tank; 10. cover plate; 11. motor; 12. first pulley; 13. transmission belt; 14. second pulley; 15. connecting rod; 16. atomizing nozzle; 17. support plate; 18. heater; 19. first filter; 20. fan; 21. guide groove; 22. limit block; 23. sliding block; 24. second filter; 25. extrusion bump. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] See also Figure 1-Figure 5The utility model provides a technical solution: a desulfurization device for removing sulfur dioxide from flue gas, comprising a reaction box 7, a material box 2 connected to the inside of the reaction box 7 is installed on the top of the reaction box 7, and a feed hopper 1 connected to the inside of the material box 2 is installed on the top of the material box 2. A symmetrically arranged first pressing roller 4 and a second pressing roller 6 are rotatably installed in the material box 2, and the first pressing roller 4 and the second pressing roller 6 are both arranged horizontally. The first pressing roller 4 and the second pressing roller 6 respectively include a roller body and a rotating shaft, the rotating shaft passes through the roller body along the axial direction of the roller body and is fixedly installed with the roller body, and both ends of the rotating shaft are rotatably installed with the material box 2.

[0024] A motor 11 is fixedly installed on the outside of the material box 2, and the output end of the motor 11 passes through the material box 2 and is coaxially fixedly installed with the rotating shaft of the first pressure roller 4. A first transmission assembly is installed between the rotating shaft of the first pressure roller 4 and the rotating shaft of the second pressure roller 6. The first transmission assembly includes a first gear 3 and a second gear 5. One end of the rotating shaft of the first pressure roller 4 away from the motor 11 passes through the material box 2 and is coaxially fixedly installed with the first gear 3. One end of the second pressure roller 6 passes through the material box 2 and is coaxially fixedly installed with the second gear 5. The second gear 5 is meshed with the first gear 3.

[0025] A connecting rod 15 is rotatably installed in the material box 2. The connecting rod 15 includes a bar block, an output shaft is fixedly installed on one side of the bar block, and a connecting shaft is fixedly installed on the other side of the bar block. The output shaft of the connecting rod 15 passes through the material box 2 and a second transmission assembly is installed between the rotating shaft of the second pressure roller 6. The second transmission assembly includes a first pulley 12 and a second pulley 14. The end of the rotating shaft of the second pressure roller 6 close to the motor 11 passes through the material box 2 and is coaxially fixedly installed with the second pulley 14. The output shaft of the connecting rod 15 is rotatably installed with the inner wall of the material box 2, and the output shaft of the connecting rod 15 passes through the material box 2 and is coaxially fixedly installed with the second pulley 14. The second pulley 14 and the first pulley 12 are sleeved with the same transmission belt 13.

[0026] A second filter screen 24 is fixedly installed at the bottom of the material box 2, a sliding block 23 is installed above the second filter screen 24, and a limit block 22 is fixedly installed on the top of the sliding block 23. The limit block 22 is arranged vertically, and a through groove is provided on the limit block 22 along its vertical direction. The through groove is slidably mounted with the connecting shaft of the connecting rod 15. A guide groove 21 is horizontally provided in the material box 2, and the guide groove 21 is slidably mounted with one side of the sliding block 23. Multiple extrusion protrusions 25 are fixedly installed on both sides of the sliding block 23, and the multiple extrusion protrusions 25 are arranged in a rectangular array. The extrusion protrusions 25 cooperate with the inner wall of the material box 2 to extrude and crush large pieces of calcium carbonate. The extrusion protrusions 25 are cylindrical or conical.

[0027] The cross section of the top of the sliding block 23 is triangular, so as to prevent the crushed calcium carbonate from accumulating on the top surface of the sliding block 23 .

[0028] Atomizing nozzles 16 and air inlets 8 are installed on both sides of the reaction box 7, respectively, and the air inlet 8 is connected to the interior of the reaction box 7. A water tank 9 is fixedly installed on one side of the reaction box 7, and a water pump is installed on the water tank 9, and the water pump is connected to the atomizing nozzle 16 through a water pipe. The atomizing nozzle 16 sprays water in atomization to accelerate the reaction of sulfur dioxide and calcium carbonate. An air supply component is installed in the air inlet 8. The air supply component includes a fan 20, which is fixedly installed in the air inlet 8, and a first filter 19 is fixedly installed at one end of the air inlet 8.

[0029] A support plate 17 is fixedly installed in the reaction box 7, and an activated carbon layer is provided on the upper surface of the support plate 17. A heater 18 is installed below the support plate 17, and the heater 18 is fixedly installed with the bottom wall of the reaction box 7. Air holes are evenly provided on the support plate 17 to facilitate the heater 18 to heat the activated carbon layer. The activated carbon layer absorbs the calcium sulfate aqueous solution, and cooperates with the heater 18 to dry the calcium sulfate aqueous solution, so that the calcium sulfate aqueous solution is crystallized and precipitated, which is convenient for recovering the calcium sulfate crystals.

[0030] An opening is provided on one side of the reaction box 7, and the opening is located above the support plate 17. A cover plate 10 is hingedly mounted on the opening to facilitate taking out the calcium sulfate crystals.

[0031] The working principle of a desulfurization device for removing sulfur dioxide from flue gas provided by the utility model is as follows:

[0032] When working, the fan 20 is started, and the fan 20 sucks the flue gas containing sulfur dioxide into the interior of the reaction box 7 from the air inlet 8, so that the flue gas passes through the first filter 19 to filter out small solid particles, and then is sent into the interior of the reaction box 7 through the air outlet of the fan 20.

[0033] After the flue gas enters the reaction box 7, the motor 11 is started, the motor 11 drives the first roller 4 to rotate, the first roller 4 drives the first gear 3 to rotate, the first gear 3 drives the second gear 5 to rotate, and the second gear 5 drives the second roller 6 to rotate. Calcium carbonate solid is added into the material box 2 through the feed hopper 1, and the first roller 4 and the second roller 6 rotate to grind and crush the calcium carbonate solid.

[0034] When the second roller 6 rotates, it also drives the first pulley 12 to rotate. The first pulley 12 drives the second pulley 14 to rotate through the transmission belt 13. The rotation of the second pulley 14 drives the output shaft of the connecting rod 15 to rotate. The output shaft of the connecting rod 15 drives the connecting shaft of the connecting rod 15 to rotate through the bar block. At the same time, the connecting shaft of the connecting rod 15 slides along the through groove of the limit block 22, so that the connecting rod 15 drives the sliding block 23 to move back and forth left and right, and uses the extrusion protrusion 25 to cooperate with the inner wall of the material box 2 to squeeze and crush the large pieces of calcium carbonate that are not completely crushed by the first roller 4 and the second roller 6. By performing secondary extrusion and crushing of large pieces of calcium carbonate, the crushing efficiency is improved, the reaction amount of calcium carbonate is increased, and the desulfurization efficiency is improved.

[0035] The crushed calcium carbonate enters the reaction box 7 through the second filter screen 24 and falls on the activated carbon layer on the upper surface of the support plate 17. When calcium carbonate reacts with sulfur dioxide, the water pump is started to pump the water in the water tank 9 into the atomizing nozzle 16 through the water pipe, and water is sprayed into the reaction box 7 through the atomizing nozzle 16, so that sulfur dioxide is oxidized to generate sulfurous acid, and then reacts with calcium carbonate, which can accelerate the reaction rate between sulfur dioxide and calcium carbonate and accelerate the reaction process.

[0036] When the calcium sulfate aqueous solution flows into the activated carbon layer on the upper surface of the support plate 17, the heater 18 is started to heat, and the activated carbon layer on the support plate 17 cooperates with the heater 18 to dry and dehydrate the calcium sulfate aqueous solution, so that the calcium sulfate forms crystals in the activated carbon layer, and then the cover plate 10 is opened to take out the calcium sulfate crystals.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A desulfurization device for removing sulfur dioxide from flue gas, comprising a reaction box (7), characterized in that: A material box (2) is arranged on the top of the reaction box (7), a feed hopper (1) is arranged on the top of the material box (2), a first pressing roller (4) and a second pressing roller (6) are rotatably arranged in the material box (2), a motor (11) is fixedly arranged on the outside of the material box (2), an output end of the motor (11) is fixedly connected to the first pressing roller (4), a first transmission assembly is arranged between the first pressing roller (4) and the second pressing roller (6), a connecting rod (15) is rotatably arranged in the material box (2), and a second transmission assembly is arranged between the connecting rod (15) and the second pressing roller (6); a second filter screen (24) is fixedly arranged at the bottom of the material box (2). ), a sliding block (23) is arranged above the second filter screen (24), a limiting block (22) is fixedly arranged on the top of the sliding block (23), the limiting block (22) is slidably connected to the connecting rod (15), a guide groove (21) is provided in the material box (2), the guide groove (21) is slidably connected to the sliding block (23), a plurality of extrusion protrusions (25) are fixedly arranged on both sides of the sliding block (23), the extrusion protrusions (25) cooperate with the inner wall of the material box (2) to extrude and crush large pieces of calcium carbonate, and an atomizing nozzle (16) and an air inlet (8) are respectively arranged on both sides of the reaction box (7), and an air supply component is arranged in the air inlet (8).

2. The desulfurization device for removing sulfur dioxide from flue gas according to claim 1, characterized in that: The first transmission assembly comprises a first gear (3) and a second gear (5); the first gear (3) is coaxially fixedly connected to the first pressure roller (4); the second gear (5) is coaxially fixedly connected to the second pressure roller (6); and the second gear (5) is meshed with the first gear (3).

3. The desulfurization device for removing sulfur dioxide from flue gas according to claim 1, characterized in that: The second transmission assembly comprises a first pulley (12) and a second pulley (14); the first pulley (12) is coaxially fixedly connected to the second pressure roller (6); the second pulley (14) is fixedly connected to the connecting rod (15); and the second pulley (14) and the first pulley (12) are sleeved with the same transmission belt (13).

4. The desulfurization device for removing sulfur dioxide from flue gas according to claim 1, characterized in that: A support plate (17) is fixedly arranged in the reaction box (7), an activated carbon layer is arranged on the top of the support plate (17), a heater (18) is arranged below the support plate (17), and the heater (18) is fixedly connected to the bottom wall of the reaction box (7).

5. The desulfurization device for removing sulfur dioxide from flue gas according to claim 1, characterized in that: A water tank (9) is fixedly arranged on one side of the reaction box (7), and a water pump is arranged on the water tank (9), and the water pump is connected to the atomizing nozzle (16) through a water pipe.

6. The desulfurization device for removing sulfur dioxide from flue gas according to claim 1, characterized in that: The air supply assembly comprises a fan (20), the fan (20) is fixedly arranged in the air inlet (8), and a first filter (19) is fixedly arranged at one end of the air inlet (8).

7. The desulfurization device for removing sulfur dioxide from flue gas according to claim 1, characterized in that: The cross section of the top of the sliding block (23) is triangular.

8. The desulfurization device for removing sulfur dioxide from flue gas according to claim 4, characterized in that: An opening is provided on one side of the reaction box (7), the opening is located above the support plate (17), and a cover plate (10) is hingedly provided on the opening.

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