Industrial silicon flue gas desulfurization, denitrification and dust removal collaborative treatment equipment

Abstract

The application belongs to the technical field of separation, and particularly relates to an industrial silicon flue gas desulfurization, denitration and dust removal synergic treatment equipment, which comprises a treatment seat, a bag dust removal seat is installed above the treatment seat through a support, an air inlet pipe is fixedly installed on the outer surface of the bag dust removal seat, a desulfurization tower is installed above the treatment seat and on one side of the bag dust removal seat through a support, a denitration tower is installed above the treatment seat and on one side of the desulfurization tower through a support, the bag dust removal seat and the desulfurization tower and the desulfurization tower and the denitration tower are connected through air ducts, a plurality of adsorption bags are arranged in the bag dust removal seat, the adsorption bags are used for blocking dust in the silicon flue gas, flue gas gradually enters the desulfurization tower through the air ducts, and is combined with dry sodium bicarbonate powder in the desulfurization tower, so that the dry sodium bicarbonate powder reacts with sulfur dioxide in the flue gas at high temperature to produce sodium sulfate flue gas.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of separation technology, and in particular relates to an industrial silicon flue gas desulfurization, denitrification and dust removal synergistic treatment equipment. BACKGROUND

[0002] In the production of industrial silicon, smelting is carried out in a submerged arc furnace by using a continuous operation method. After the quartz is washed, selected, screened and dried, and oil coke, charcoal, coal and the like are respectively proportioned according to different proportions, the proportion of each material is controlled by a computer program, and the materials are respectively collected from the material bin to a belt, mixed uniformly through the feeding process, and then fed into the electric furnace. A large amount of flue gas is generated during the production of industrial silicon.

[0003] The prior art also proposes some solutions for the treatment of silicon flue gas. For example, a kind of industrial silicon flue gas purification device is disclosed in a Chinese patent with the publication number CN218530144U. The device performs primary dust removal treatment on the silicon furnace flue gas through a first dust removal device and collects microsilica powder. The silicon furnace flue gas after primary dust removal treatment is subjected to desulfurization treatment in a desulfurization device. Subsequently, the silicon furnace flue gas is subjected to secondary dust removal treatment in a second dust removal device and collects desulfurization by-products. The silicon furnace flue gas after secondary dust removal treatment is subjected to denitrification treatment in a denitrification device. The device can efficiently perform desulfurization and denitrification treatment on the silicon furnace flue gas, and has good dust removal and desulfurization and denitrification effects.

[0004] Although the above technical solution can efficiently perform desulfurization and denitrification treatment on the silicon furnace flue gas, there are still other problems in specific use. For example, a large amount of dust is generated during the production of industrial silicon. If direct desulfurization and denitrification treatment is performed, the treatment effect of the silicon flue gas will be affected. In addition, the dust removal equipment in the prior art, such as the bag dust collector, will accumulate a large amount of dust on its surface within a certain time of dust removal. The dust accumulated in the interior of the equipment is difficult to handle, which affects the subsequent treatment of the silicon flue gas.

[0005] Therefore, the present application provides an industrial silicon flue gas desulfurization, denitrification and dust removal synergistic treatment equipment. SUMMARY

[0006] In order to make up for the deficiencies of the prior art and solve at least one technical problem proposed in the background art.

[0007] The technical scheme adopted by the present application to solve its technical problems is: the industrial silicon flue gas desulfurization and denitrification dust removal synergistic treatment equipment, including a processing seat, the upper part of the processing seat is provided with a bag dust removal seat through a support, the outer surface of the bag dust removal seat is fixedly provided with an air inlet pipe, the upper part of the processing seat and one side of the bag dust removal seat are provided with a desulfurization tower through a support, the upper part of the processing seat and one side of the desulfurization tower are provided with a denitrification tower through a support, the bag dust removal seat, the desulfurization tower and the desulfurization tower are connected through an air duct, a plurality of adsorption bags are arranged in the bag dust removal seat, and the adsorption bag is used for blocking the dust in the silicon flue gas.

[0008] Preferably, the air duct is designed in a spiral shape, a venturi tube is arranged above the desulfurization tower, and the venturi tube is connected with an external controller; during operation, the air duct is designed in a spiral shape, so that the flow direction of the flue gas can form a turbulent flow when the flue gas is transmitted into the desulfurization tower or the denitrification tower, the contact time of the flue gas with the desulfurization tower or the denitrification tower is prolonged, and the reaction efficiency is improved.

[0009] Preferably, a plurality of support frames are arranged in the bag dust removal seat, the support frame is composed of a vertical rod and a plurality of horizontal rods, the adsorption bag is arranged outside the vertically arranged support frame, the top end of the vertical rod is in contact with the inner wall of the adsorption bag, a pressure sensor is arranged at the top end of the support frame, an adjusting unit is arranged outside the support frame, the adjusting unit is used for deforming the adsorption bag, and a dust collecting port is arranged at the bottom of the bag dust removal seat.

[0010] Preferably, the adjusting unit comprises a sliding block, the sliding block is slidingly arranged on the side wall of the support frame, an electric push rod is fixedly arranged on the side wall of the support frame, two sliding blocks are arranged on the surface of one of the support frames, an adjusting shaft is hingedly arranged on the surface of each sliding block, and the end of the adjusting shaft is in contact with the inner wall of the adsorption bag; during operation, when the controller controls the operation of the adjusting unit, the controller controls the movement of the telescopic end of the electric push rod, so that the telescopic end drives the sliding block to move, that is, the corresponding two sliding blocks are close to each other, the sliding block drives the adjusting shaft hingedly connected thereto to rotate, since the end of the adjusting shaft is in contact with the inner wall of the adsorption bag, the corresponding adjusting shaft pushes the inner wall of the adsorption bag, so that the adsorption bag deforms to a certain extent, that is, it appears to be "expanded", and then the movement of the telescopic end of the electric push rod is controlled back and forth, so that the adsorption bag can be deformed as soon as possible, and the dust adhering to the surface of the adsorption bag can be treated effectively.

[0011] Preferably, the surface of the sliding block is provided with a hinged shaft matched with the adjusting shaft, and the surface of the support frame is provided with a limiting groove matched with the sliding block.

[0012] Preferably, the upper end surface of the cloth bag dust removal seat is slidably provided with two sealing plates for shielding the upper end surface of the cloth bag dust removal seat, the side wall of the treatment seat is provided with a reciprocating air cylinder, the telescopic end of the reciprocating air cylinder is provided with a connecting frame, the end of the connecting frame away from the reciprocating air cylinder is connected with the upper end surface of the sealing plate, the inside of the cloth bag dust removal seat is provided with a replacement unit for replacing the adsorbed cloth bag.

[0013] Preferably, the replacement unit comprises a connecting branch plate, a connecting plate body is installed on the upper end surface of the connecting branch plate, a limiting ring plate is installed on the end of the connecting plate body away from the connecting branch plate, a rotating tooth ring is installed in the inside of the limiting ring plate, a plurality of placement plates are installed on the tooth wall of the rotating tooth ring, the upper end surface of each placement plate is placed with a to-be-replaced adsorbed cloth bag body, a clamping ring is slidably arranged on the inside of the lower side of the cloth bag dust removal seat, a vertical slot is opened in the inside of the cloth bag dust removal seat, an electric telescopic column is installed on the inner wall of the vertical slot, the clamping ring is slidably designed in the inside of the vertical slot, and the telescopic end of the electric telescopic column is in contact with the upper end surface of the clamping ring; when the cloth bag dust removal seat is used, the adsorbed cloth bag can be replaced through the replacement unit in the inside of the cloth bag dust removal seat after the upper opening of the cloth bag dust removal seat is opened; the damaged adsorbed cloth bag is lifted by the external mechanical hand, so that it moves upwards along the outside of the adjusting shaft end, and is taken out from the outside of the cloth bag dust removal seat; then the rotating tooth ring in the inside of the limiting ring plate is controlled to rotate, so that the rotating tooth ring drives the placement plate to rotate the to-be-replaced adsorbed cloth bag body to the replacement position.

[0014] Preferably, the clamping ring comprises a rotating clamp plate, the shape of the rotating clamp plate is V-shaped, and the rotating clamp plate is used for clamping the bottom of the cloth bag; a rotating shaft matched with the rotating clamp plate is arranged in the inside of the clamping ring, a micro motor is installed on the end of the rotating shaft, and the micro motor is installed in the inside of the clamping ring; when the clamping ring moves to the bottom of the corresponding placement plate, the rotating clamp plate is controlled to rotate, so that the V-shaped rotating clamp plate rotates to clamp the bottom of the cloth bag; then the rotating clamp plate is controlled to move downwards, so that the rotating clamp plate gradually covers the supporting frame and the adjusting shaft in the moving process; when the rotating clamp plate moves to the initial position, the replacement of the adsorbed cloth bag is completed, so that the subsequent flue gas treatment can be continued.

[0015] Preferably, the surface of the placement plate is slidably provided with two supporting plates, the two supporting plates are slidably arranged on the surface of the placement plate through an external controller, and the surface of the placement plate is provided with a limiting groove matched with the supporting plates; when the V-shaped rotating clamp plate rotates to clamp the bottom of the cloth bag, the supporting plates are controlled to move away from the adsorbed cloth bag by the controller, that is, the two supporting plates move away from each other, so that the two supporting plates no longer support the to-be-replaced adsorbed cloth bag; then the clamping ring moves to the initial position, and the replacement of the adsorbed cloth bag is completed.

[0016] Preferably, the side wall of the connecting branch plate is rotationally provided with a driving gear, the driving gear is in meshing connection with a rotating gear ring, and the lower end face of the limiting ring plate is provided with an annular groove matched with the rotating gear ring; the side of the adjusting shaft close to the adsorbing cloth bag is arc-shaped, and the inside of the cloth bag dust removal seat is provided with a vertical groove matched with the clamping ring.

[0017] The beneficial effects of the present application are as follows:

[0018] 1. The industrial silicon flue gas desulfurization and denitrification dust removal synergistic treatment equipment, when the adsorbing cloth bag is normally used, the pressure sensor on the side wall of the supporting frame will always support the whole adsorbing cloth bag, as the dust on the surface of the adsorbing cloth bag accumulates more and more, and the formed dust layer gradually thickens, resulting in increased resistance of the flue gas passing through the adsorbing cloth bag, and the gravity of the adsorbing cloth bag itself increases, when the gravity of the adsorbing cloth bag detected by the pressure sensor is greater than the threshold value set in advance, at this time the pressure sensor transmits a signal to the controller, and the controller controls the adjusting unit to operate, so that the adsorbing cloth bag deforms, and the dust on the surface of the adsorbing cloth bag is shaken off and falls into the dust collecting port below.

[0019] 2. The industrial silicon flue gas desulfurization and denitrification dust removal synergistic treatment equipment, when the clamping ring moves to the bottom of the corresponding placing plate, the rotating clamping plate is controlled to rotate, so that the V-shaped rotating clamping plate rotates to clamp the bottom of the cloth bag, and then the rotating clamping plate is controlled to move downward, so that the rotating clamping plate gradually covers the supporting frame and the adjusting shaft during the downward movement, when the rotating clamping plate moves to the initial position, the replacement of the adsorbing cloth bag is completed at this time, so that the subsequent flue gas can be continuously treated. BRIEF DESCRIPTION OF DRAWINGS

[0020] The present application will be further described below with reference to the drawings.

[0021] Figure 1 is a perspective view of the present application;

[0022] Figure 2 is a structural schematic view of the cloth bag dust removal seat in the present application;

[0023] Figure 3 is a structural schematic view of the adsorbing cloth bag in the present application;

[0024] Figure 4 is a structural schematic view of the reciprocating air cylinder in the present application;

[0025] Figure 5 is a structural schematic view of the clamping ring in the present application;

[0026] Figure 6 is a structural schematic view of the supporting frame in the present application;

[0027] Figure 7This is a schematic diagram of the connecting support plate in this invention;

[0028] Figure 8 This is a schematic diagram of the vertical groove structure in this invention;

[0029] Figure 9 This is a schematic diagram of the rotating clamp in this invention;

[0030] Figure 10 This is a schematic diagram of the support plate in this invention.

[0031] In the diagram: 1. Treatment seat; 2. Bag filter seat; 201. Inlet pipe; 202. Adsorption bag; 203. Vertical trough; 204. Electric telescopic column; 205. Dust collection port; 3. Desulfurization tower; 4. Denitrification tower; 5. Venturi tube; 6. Venturi tube; 7. Support frame; 701. Pressure sensor; 702. Vertical rod; 703. Horizontal rod; 203. Dust collection port; 8. Sliding block; 801. Adjusting shaft; 9. Electric push rod; 10. Sealing plate; 11. Reciprocating cylinder; 12. Connecting frame; 13. Connecting support plate; 131. Connecting plate body; 14. Limiting ring plate; 15. Rotating gear ring; 16. Placement plate; 17. Clamping ring; 171. Rotating clamping plate; 18. Support plate; 19. Drive gear. Detailed Implementation

[0032] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0033] like Figures 1 to 10 As shown in the embodiment of the present invention, an industrial silicon flue gas desulfurization, denitrification, and dust removal co-treatment device includes a treatment base 1. A bag filter base 2 is mounted on top of the treatment base 1 via a bracket. An air inlet pipe 201 is fixedly mounted on the outer surface of the bag filter base 2. A desulfurization tower 3 is mounted on top of the treatment base 1 and on one side of the bag filter base 2 via a bracket. A denitrification tower 4 is mounted on top of the treatment base 1 and on one side of the desulfurization tower 3 via a bracket. The bag filter base 2 and the desulfurization tower 3, as well as the denitrification tower 3 and the denitrification tower 4, are all connected by air pipes 5. The bag filter base 2 is provided with multiple adsorption bags 202 inside. The adsorption bags 202 are used to block dust in the silicon flue gas. The adsorption bags 202 can automatically deform during use, thereby shaking off the dust accumulated on their surface.

[0034] Specifically, during the processing, the industrial silicon flue gas is introduced into the air inlet pipe 201 and the cloth bag dust removal seat 2 through the external transmission pipe. When the dust in the silicon flue gas contacts the adsorption cloth bag 202 inside the cloth bag dust removal seat 2, the dust particles are directly intercepted, and the purified gas enters the air duct 5 with the adsorption cloth bag 202 at different positions. The flue gas gradually enters the desulfurization tower 3 through the air duct 5, and combines with the sodium bicarbonate dry powder inside the desulfurization tower 3. The sodium bicarbonate dry powder reacts with sulfur dioxide in the flue gas at high temperature to produce sodium sulfate flue gas. Subsequently, the desulfurized flue gas continues to enter the denitration tower 4 through the air duct 5, so that the activated carbon plate in the tower combines with the flue gas, and the activated carbon can act as an adsorbent and an oxidizing agent, and can be reduced with the desulfurized flue gas to achieve denitration treatment. This design realizes the function of simultaneous desulfurization and denitration of industrial silicon flue gas, which is convenient for subsequent flue gas discharge.

[0035] It should be noted that the reaction of sodium bicarbonate dry powder inside the desulfurization tower 3 and the activated carbon plate inside the denitration tower 4 with the flue gas is a prior art, which is not described in detail in the embodiment of the present application.

[0036] Moreover, the adsorption cloth bag 202 can automatically deform during use, so as to shake off the dust particles adhered to its surface, facilitating continuous use of the adsorption cloth bag 202.

[0037] The air duct 5 is designed in a spiral shape, and the upper portion of the desulfurization tower 3 is provided with a venturi tube 6, which is connected with an external controller.

[0038] During operation, the air duct 5 is designed in a spiral shape, so that the flow direction of the flue gas can form a turbulent flow when the flue gas is transmitted into the desulfurization tower 3 or the denitration tower 4, thereby prolonging the contact time of the flue gas with the desulfurization tower 3 or the denitration tower 4 and improving the reaction efficiency. Moreover, the sodium bicarbonate dry powder is ground to 200 mesh in advance, and the sodium bicarbonate dry powder is injected in a negative pressure state through the venturi tube 6, which can facilitate uniform mixing of the sodium bicarbonate dry powder and the flue gas.

[0039] The principle of the venturi tube 6 is a prior art, which is not described in detail.

[0040] A plurality of support frames 7 are installed inside the cloth bag dust removal seat 2, the support frame 7 is composed of a vertical rod 702 and a plurality of horizontal rods 703, the adsorption cloth bag 202 is sleeved outside the vertically arranged support frame 7, and the top end of the vertical rod 702 is in contact with the inner wall of the adsorption cloth bag 202. A pressure sensor 701 is installed at the top end of the support frame 7, and an adjusting unit is arranged outside the support frame 7. The adjusting unit is used to deform the adsorption cloth bag 202. A dust collecting port 205 is installed at the bottom of the cloth bag dust removal seat 2.

[0041] During operation, when the adsorption bag 202 is in normal use, the pressure sensor 701 at the top of the support frame 7 is in contact with the inner wall of the adsorption bag 202 and supports the entire adsorption bag 202. As more and more dust accumulates on the surface of the adsorption bag 202 and the dust layer gradually thickens, the resistance of the flue gas passing through the adsorption bag 202 increases, and the weight of the adsorption bag 202 itself increases. That is, the pressure on the pressure sensor 701 gradually increases. When the weight of the adsorption bag 202 detected by the pressure sensor 701 is greater than its preset threshold, the pressure sensor 701 transmits a signal to the controller. The controller controls the operation of the adjustment unit, thereby causing the adsorption bag 202 to deform. The dust on the surface of the adsorption bag 202 will be shaken off and fall into the dust collection port 205 below.

[0042] It should be noted that, referring to the appendix Figure 5 As shown, taking one of the support frames 7 as an example, the support frame 7 consists of a vertical rod 702 and multiple horizontal rods 703. The horizontal rods 703 are arranged at equal intervals on the outside of the vertical rod 702, and the bottom end of the vertical rod 702 is installed on the bottom wall of the bag filter seat 2. The adsorption bag 202 is sleeved on the outside of the entire vertical rod 702, and the top end of the vertical rod 702 is in contact with the inner wall of the adsorption bag 202.

[0043] like Figures 3 to 6 As shown, the adjustment unit includes a slider 8, which is slidably disposed on the side wall of the support frame 7. An electric push rod 9 is fixedly installed on the side wall of the support frame 7. Two sliders 8 are provided on the surface of one of the support frames 7. An adjustment shaft 801 is hinged to the surface of each slider 8. The end of the adjustment shaft 801 contacts the inner wall of the adsorption bag 202. The surface of the slider 8 is provided with a hinge shaft adapted to the adjustment shaft 801. The surface of the support frame 7 is provided with a limiting groove adapted to the slider 8.

[0044] During operation, when the controller controls the adjustment unit to run, the controller will control the telescopic end of the electric push rod 9 to move, causing the telescopic end to drive the slider 8 to move. That is, the two corresponding sliders 8 move closer to each other, and the slider 8 will drive the adjustment shaft 801 connected to it to rotate. Since the end of the adjustment shaft 801 is in contact with the inner wall of the adsorption bag 202, the corresponding adjustment shaft 801 will push the inner wall of the adsorption bag 202, causing the adsorption bag 202 to deform to a certain extent, that is, it will appear in a "spreading" state. Then, the telescopic end of the electric push rod 9 is controlled back and forth to move, so as to quickly deform the adsorption bag 202 and improve the dust removal effect on its surface.

[0045] The upper end surface of the cloth bag dust removal seat 2 is slidably provided with two sealing plates 10, which are used to shield the upper end surface of the cloth bag dust removal seat 2, and the side wall of the processing seat 1 is provided with a reciprocating air cylinder 11, the telescopic end of the reciprocating air cylinder 11 is provided with a connecting frame 12, the end of the connecting frame 12 away from the reciprocating air cylinder 11 is connected with the upper end surface of the sealing plate 10, and the inside of the cloth bag dust removal seat 2 is provided with a replacement unit, which is used to replace the adsorbing cloth bag 202;

[0046] In use, when the cloth bag dust removal seat 2 is normally used, the two sealing plates 10 are located on the upper end surface of the cloth bag dust removal seat 2, so that the sealing plates 10 seal and block the cloth bag dust removal seat 2; as the adsorbing cloth bag 202 in the cloth bag dust removal seat 2 is continuously used and needs to be replaced due to damage, the telescopic end of the reciprocating air cylinder 11 drives the connecting frame 12 and the corresponding sealing plate 10 to move away from the cloth bag dust removal seat 2 at this time, so that the two sealing plates 10 are opened, so that the opening above the cloth bag dust removal seat 2 is opened, and then the replacement unit in the cloth bag dust removal seat 2 can replace the adsorbing cloth bag 202.

[0047] As shown in Figures 4 to 9 , the replacement unit comprises a connecting branch plate 13, the connecting branch plate 13 is installed above the processing seat 1, the upper end surface of the connecting branch plate 13 is provided with a connecting plate body 131, the end of the connecting plate body 131 away from the connecting branch plate 13 is provided with a limiting ring plate 14, the inside of the limiting ring plate 14 is provided with a rotating tooth ring 15, the tooth wall of the rotating tooth ring 15 is provided with a plurality of placing plates 16, the upper end surface of each placing plate 16 is placed with a to-be-replaced adsorbing cloth bag 202 body, the inside of the cloth bag dust removal seat 2 is slidably provided with a clamping ring 17, the inside of the cloth bag dust removal seat 2 is provided with a vertical groove 203, the inner wall of the vertical groove 203 is provided with an electric telescopic column 204, the clamping ring 17 is slidably designed in the vertical groove 203, and the telescopic end of the electric telescopic column 204 is in contact with the upper end surface of the clamping ring 17;

[0048] It should be noted that, referring to the accompanying Figure 3 and Figure 4 , the adsorbing cloth bag 202 is arranged in a circumferential array in the inside of the cloth bag dust removal seat 2, that is, all the adsorbing cloth bags 202 are arranged close to the inner wall of the cloth bag dust removal seat 2, so that the bottom of each adsorbing cloth bag 202 is provided with a clamping ring 17, and therefore the side wall of each clamping ring 17 is slidably designed on the inner wall of the cloth bag dust removal seat 2 through the electric telescopic column 204.

[0049] During operation, when the opening above the bag filter seat 2 is opened, the adsorption bag 202 can be replaced through the replacement unit inside the bag filter seat 2. The damaged adsorption bag 202 is lifted by controlling the external robotic arm, so that it moves upward along the outer side of the end of the adjusting shaft 801 and is lifted out of the bag filter seat 2. Then, the rotating toothed ring 15 inside the limiting ring plate 14 is controlled to rotate, so that the rotating toothed ring 15 drives the placement plate 16 to rotate the adsorption bag 202 body to be replaced to the desired replacement position.

[0050] Then, the corresponding electric telescopic column 204 is controlled by the external controller to move the clamping ring 17 at its telescopic end upward, so that the clamping ring 17 moves to the bottom of the absorbent bag 202 body to be replaced, and the clamping ring 17 clamps the bottom of the absorbent bag 202 body to be replaced. Then, the clamping ring 17 is controlled to return to the initial position, so that the absorbent bag 202 body to be replaced is sleeved on the outside of the support frame 7 and the adjusting shaft 801.

[0051] The clamping ring 17 includes a rotating clamping plate 171, which is V-shaped and is used to clamp the bottom of the cloth bag. The clamping ring 17 has a rotating shaft adapted to the rotating clamping plate 171 inside, and a micro motor is installed at the end of the rotating shaft. The micro motor is installed inside the clamping ring 17.

[0052] During operation, when the clamping ring 17 moves to the bottom of the corresponding placement plate 16, the micro motor is controlled to drive the rotating clamping plate 171 to rotate, so that the V-shaped rotating clamping plate 171 rotates to clamp the bottom of the filter bag. Then, the rotating clamping plate 171 is controlled to move down, so that the rotating clamping plate 171 gradually covers the support frame 7 and the adjusting shaft 801 during the downward movement. When the rotating clamping plate 171 moves to the initial position, the adsorption filter bag 202 is replaced, which facilitates the subsequent treatment of silica fume.

[0053] It should be noted that the cloth bag to be replaced above the placement plate 16 is in a retracted state, which not only makes it convenient to place it, but also makes it convenient to rotate the clamp 171 to hold its bottom.

[0054] Two support plates 18 are slidably disposed on the surface of the placement plate 16. The two support plates 18 are slidably disposed on the surface of the placement plate 16 via an external controller. The surface of the placement plate 16 is provided with limiting grooves that are adapted to the support plates 18. During operation, when the V-shaped rotating clamp 171 rotates and clamps the bottom of the cloth bag, the controller controls the support plates 18 to move away from the adsorption cloth bag 202, that is, the two support plates 18 move away from each other, so that the two support plates 18 no longer support the adsorption cloth bag 202 to be replaced. Then, when the clamping ring 17 moves to the initial position, the replacement of the adsorption cloth bag 202 can be completed.

[0055] A drive gear 19 is rotatably mounted on the side wall of the connecting support plate 13. The upper end face of the drive gear 19 is connected to the output end of the motor. The motor is installed at the end of the connecting support plate 13. The drive gear 19 and the rotating gear ring 15 are meshed together. The lower end face of the limiting ring plate 14 is provided with an annular groove that matches the rotating gear ring 15. The upper end face of the drive gear 19 is connected to the output end of the motor. The side of the adjusting shaft 801 near the adsorption bag 202 is arc-shaped. During operation, the drive gear 19 is provided. When it is necessary to control the rotation of the rotating gear ring 15, the motor is controlled to drive the drive gear 19 to rotate. The drive gear 19 drives the rotating gear ring 15 that meshes with it to rotate. The rotating gear ring 15 will then drive the placement plate 16 and the adsorption bag 202 to be replaced to rotate to a suitable position. The lower end face of the limiting ring plate 14 is provided with an annular groove that matches the rotating gear ring 15, which can limit the position of the rotating gear ring 15 and facilitate the rotation of the rotating gear ring 15.

[0056] During operation, industrial silicon flue gas is introduced into the inlet pipe 201 and the bag filter seat 2 through an external transmission pipe. When the dust in the silicon flue gas comes into contact with the adsorption bags 202 inside the bag filter seat 2, the dust particles are directly trapped. The purified gas enters the ventilation pipe 5 through the adsorption bags 202 at different positions. The flue gas gradually enters the desulfurization tower 3 through the ventilation pipe 5 and combines with the sodium bicarbonate dry powder inside the desulfurization tower 3. The sodium bicarbonate dry powder reacts with the sulfur dioxide in the flue gas at high temperature to produce sodium sulfate flue gas. Subsequently, the desulfurized flue gas continues to enter the denitrification tower 4 through the ventilation pipe 5, so that the activated carbon plate inside the tower combines with the flue gas. The activated carbon can act as an adsorbent and oxidant, and can undergo a reduction reaction with the desulfurized flue gas to achieve denitrification treatment. This design realizes the function of simultaneous desulfurization and denitrification of industrial silicon flue gas, which facilitates the subsequent discharge of flue gas.

[0057] The spiral design of the ventilation pipe 5 allows the flue gas to flow in turbulence when it is transmitted to the desulfurization tower 3 or the denitrification tower 4, which prolongs the contact time between the flue gas and the desulfurization tower 3 or the denitrification tower 4 and improves the reaction efficiency. In addition, the sodium bicarbonate dry powder is ground to 200 mesh in advance and injected into the sodium bicarbonate dry powder under negative pressure through the venturi tube 6, which can facilitate its uniform mixing with the flue gas.

[0058] During normal use, the pressure sensor 701, located at the top of the support frame 7, contacts the inner wall of the adsorption bag 202 and supports the entire adsorption bag 202. As dust accumulates on the surface of the adsorption bag 202 and the dust layer gradually thickens, the resistance of the flue gas passing through the adsorption bag 202 increases, and the weight of the adsorption bag 202 itself increases. This means the pressure on the pressure sensor 701 gradually increases. When the weight of the adsorption bag 202 detected by the pressure sensor 701 exceeds a preset threshold, the pressure sensor 701 transmits a signal to the controller. The controller then controls the adjustment unit to operate, causing the adsorption bag 202 to deform. The dust on the surface will be shaken off and fall into the dust collection port 205 below. When the controller controls the operation of the adjustment unit, the controller will control the extension end of the electric push rod 9 to move, so that the extension end drives the slider 8 to move. That is, the two corresponding sliders 8 move closer to each other, and the slider 8 will drive the adjustment shaft 801 of its hinge to rotate. Since the end of the adjustment shaft 801 is in contact with the inner wall of the adsorption bag 202, the corresponding adjustment shaft 801 will push the inner wall of the adsorption bag 202, so that the adsorption bag 202 will undergo a certain degree of deformation, that is, it will appear in a "spread" state. Then, the extension end of the electric push rod 9 is controlled back and forth to move, so that the adsorption bag 202 can be deformed as soon as possible, improving the dust treatment effect on its surface.

[0059] When the bag filter 2 is in normal use, the two sealing plates 10 are located on the upper surface of the bag filter 2, sealing and blocking the bag filter 2. As the filter bags 202 inside the bag filter 2 are continuously used and become damaged and need to be replaced, the telescopic end of the reciprocating cylinder 11 is controlled to move the connecting frame 12 and the corresponding sealing plates 10 away from the bag filter 2, causing the two sealing plates 10 to open. This opens the opening at the top of the bag filter 2, allowing the filter to pass through the replacement unit inside the bag filter 2. The adsorption bag 202 can then be replaced. When the opening above the bag dust collector 2 is opened, the adsorption bag 202 can be replaced through the replacement unit inside the bag dust collector 2. The damaged adsorption bag 202 is lifted by controlling the external robotic arm, so that it moves upward along the outer side of the end of the adjusting shaft 801 and is lifted out of the outer side of the bag dust collector 2. Then the rotating toothed ring 15 inside the limiting ring plate 14 is controlled to rotate, so that the rotating toothed ring 15 drives the placement plate 16 to rotate the adsorption bag 202 body to be replaced to the desired replacement position.

[0060] Then, the corresponding electric telescopic column 204 is controlled by the external controller to move the clamping ring 17 at its telescopic end upward, so that the clamping ring 17 moves to the bottom of the absorbent bag 202 body to be replaced, and the clamping ring 17 clamps the bottom of the absorbent bag 202 body to be replaced. Then, the clamping ring 17 is controlled to return to the initial position, so that the absorbent bag 202 body to be replaced is sleeved on the outside of the support frame 7 and the adjusting shaft 801.

[0061] When the clamping ring 17 moves to the bottom of the corresponding placement plate 16, the micro motor drives the rotating clamping plate 171 to rotate, causing the V-shaped rotating clamping plate 171 to rotate and clamp the bottom of the filter bag. Then, the rotating clamping plate 171 is controlled to move downward, so that the rotating clamping plate 171 gradually covers the support frame 7 and the adjusting shaft 801 during the downward movement. When the rotating clamping plate 171 moves to the initial position, the filter bag 202 is replaced, which facilitates the continued treatment of silica fume. A drive gear 19 is provided. When it is necessary to control the rotation of the rotating gear ring 15, the motor drives the drive gear 19 to rotate. The drive gear 19 drives the rotating gear ring 15 that meshes with it to rotate. The rotating gear ring 15 will then drive the placement plate 16 and the filter bag 202 to be replaced to rotate to the appropriate position. The lower end face of the limiting ring plate 14 has an annular groove that matches the rotating gear ring 15, which can limit the position of the rotating gear ring 15 and facilitate the rotation of the rotating gear ring 15.

[0062] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of the present invention is defined by the appended claims and their equivalents.

Claims

1. An industrial silicon flue gas desulfurization, denitrification, and dust removal co-treatment device, characterized in that: The system includes a treatment base, above which a bag filter is mounted via a bracket. An air inlet pipe is fixedly mounted on the outer surface of the bag filter. Above the treatment base and on one side of the bag filter, a desulfurization tower is mounted via a bracket. Above the treatment base and on one side of the desulfurization tower, a denitrification tower is mounted via a bracket. The bag filter and the desulfurization tower, as well as the denitrification tower, are connected via air ducts. The bag filter contains multiple adsorption bags that are used to block dust in the silica fume. During use, the adsorption bags can automatically deform to shake off the dust accumulated on their surfaces. Two sealing plates are slidably arranged on the upper end surface of the bag dust collector seat. The two sealing plates are used to cover the upper end surface of the bag dust collector seat. A reciprocating cylinder is installed on the side wall of the treatment seat. A connecting frame is installed on the telescopic end of the reciprocating cylinder. The end of the connecting frame away from the reciprocating cylinder is connected to the upper end surface of the sealing plate. A replacement unit is provided inside the bag dust collector seat. The replacement unit is used to replace the adsorption bag. The replacement unit includes a connecting support plate, which is installed above the processing seat. The end of the connecting support plate has a limiting ring plate. A rotating toothed ring is installed inside the limiting ring plate. Multiple placement plates are installed on the tooth wall of the rotating toothed ring. The upper surface of each placement plate has an adsorption bag body to be replaced. A clamping ring is slidably arranged inside the bag dust collector seat on the lower side. The clamping ring includes a rotating clamping plate, which is V-shaped and is used to clamp the bottom of the bag. The bag filter base is internally equipped with multiple sets of support frames. The adsorption bag is sleeved on the outside of the vertically arranged support frames. Pressure sensors are installed on the side walls of the support frames. An adjustment unit is provided on the outside of the support frames. The adjustment unit is used to drive the adsorption bag to deform. A dust collection port is installed at the bottom of the bag filter base. The adjustment unit includes a slider, which is slidably disposed on the side wall of the support frame. An electric push rod is fixedly installed on the side wall of the support frame. Two sliders are provided on one of the support frame surfaces. An adjustment shaft is hinged to the surface of each slider. The end of the adjustment shaft contacts the inner wall of the absorbent bag. The side wall of the connecting support plate is rotatably equipped with a drive gear, which meshes with the rotating gear ring. The lower end face of the limiting ring plate is provided with an annular groove that matches the rotating gear ring. The side of the adjusting shaft near the adsorption bag is arc-shaped, and the inside of the bag dust collector seat is provided with a vertical groove that matches the clamping ring.

2. The industrial silicon flue gas desulfurization, denitrification, and dust removal co-treatment equipment according to claim 1, characterized in that: The ventilation duct is designed in a spiral shape, and a Venturi tube is installed above the desulfurization tower. The Venturi tube is connected to an external controller.

3. The industrial silicon flue gas desulfurization, denitrification, and dust removal co-treatment equipment according to claim 1, characterized in that: The surface of the slider is provided with a hinge shaft adapted to the adjustment shaft, and the surface of the support frame is provided with a limiting groove adapted to the slider.

4. The industrial silicon flue gas desulfurization, denitrification, and dust removal co-treatment equipment according to claim 1, characterized in that: Two support plates are slidably disposed on the surface of the placement plate. The two support plates are slidably disposed on the surface of the placement plate via an external controller. The surface of the placement plate is provided with limiting grooves that are adapted to the support plates.

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