Flue gas desulfurization and denitrification equipment for industrial silicon submerged arc furnace

Abstract

The utility model discloses flue gas desulfurization and denitrification equipment for an industrial silicon submerged arc furnace. The flue gas desulfurization and denitrification equipment comprises a dust removal mechanism and a driving motor mounted in the dust removal mechanism, a filtering mechanism and a water pump mounted on one side of the filtering mechanism are arranged on one side of the dust removal mechanism; the dust removal mechanism comprises a boiler, and one side of the boiler is fixedly connected with a denitration device; wherein one end, far away from the boiler, of the denitration device is fixedly connected with a dry type electrostatic dust collection box, one end of the dry type electrostatic dust collection box is fixedly connected with a fan, and one end of the fan is fixedly connected with a desulfurization device; wherein one end, far away from the fan, of the desulfurization device is fixedly connected with a wet electrostatic dust collection device, accumulated dust can be quickly cleaned by arranging the dust collection mechanism, so that the dust collection capacity of the equipment is improved, and a slurry desulfurization adsorbent prepared from limestone powder can be prevented from blocking an atomization nozzle by arranging the filtering mechanism; therefore, the desulfurization effect of the equipment is influenced.

Description

Technical Field

[0001] This utility model relates to the field of industrial silicon flue gas treatment technology, specifically to a desulfurization and denitrification device for industrial silicon submerged arc furnace flue gas. Background Technology

[0002] Publication No. CN217698530U discloses an industrial silicon flue gas desulfurization and denitrification system. By setting up a desulfurization tower and a denitrification reactor, harmful gases in the industrial silicon flue gas are eliminated during the dust removal process. Simultaneously, the negative pressure dust removal mechanism adopts a negative pressure fiberglass bag filter, meeting the requirement for separate collection of microsilica powder while reducing construction costs. However, this patent still has the following problems in practical use:

[0003] Although this industrial silicon flue gas desulfurization and denitrification system eliminates harmful gases in the industrial silicon flue gas during the dust removal process by setting up a desulfurization tower and a denitrification reactor, it is not convenient to clean the dust that accumulates in the negative pressure dust removal mechanism during the dust removal process, and the dust collection bags need to be replaced regularly to ensure that the equipment has a good dust removal effect.

[0004] An industrial silicon submerged arc furnace flue gas desulfurization and denitrification device is proposed to solve the problems mentioned above. Utility Model Content

[0005] The purpose of this utility model is to provide a desulfurization and denitrification device for industrial silicon submerged arc furnace flue gas, in order to solve the problems mentioned in the background art. Currently, by setting up a desulfurization tower and a denitrification reactor, harmful gases in industrial silicon flue gas are eliminated during the dust removal process. However, it is not convenient to clean the dust accumulated in the negative pressure dust removal mechanism during the dust removal process, and the dust removal bags need to be replaced regularly to ensure that the equipment has a good dust removal effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a desulfurization and denitrification device for flue gas from an industrial silicon submerged arc furnace, comprising a dust removal mechanism and a drive motor installed inside the dust removal mechanism;

[0007] A filter mechanism is provided on one side of the dust removal mechanism, and a water pump is installed on one side of the filter mechanism.

[0008] Also includes:

[0009] The dust removal mechanism includes a boiler, and a denitrification device is fixedly connected to one side of the boiler;

[0010] Among them, a dry electrostatic precipitator is fixedly connected to the end of the denitrification device away from the boiler, a fan is fixedly connected to one end of the dry electrostatic precipitator, and a desulfurization device is fixedly connected to one end of the fan.

[0011] The desulfurization unit is fixedly connected to a wet electrostatic precipitator at the end furthest from the fan, and a chimney is fixedly connected to one side of the wet electrostatic precipitator.

[0012] Preferably, a number of supports are fixedly connected to the top side inside the dry electrostatic precipitator, the number of supports being four, and the supports being evenly distributed on the top side inside the dry electrostatic precipitator. A first top plate is fixedly connected to the bottom side of the supports, and a number of anode plates are fixedly connected to the bottom side of the first top plate, the number of anode plates being one hundred and thirty-two, and the anode plates being evenly distributed on the bottom side of the first top plate.

[0013] Preferably, a cathode rod is provided on one side of the anode plate, the top end of the cathode rod penetrates through the first top plate and is fixedly connected to the second top plate, and the dry electrostatic precipitator has symmetrical limit grooves on both sides near the second top plate, and springs are fixedly connected inside the two limit grooves, one end of the springs is fixedly connected to the second top plate, and a first frame is provided at the center of the top of the second top plate.

[0014] Preferably, the top of the first frame is fixedly connected to the dry electrostatic precipitator box, a support base is fixedly connected to the top of the first frame, the bottom side of the support base is fixedly connected to the drive motor, a disk is fixedly connected to the output end of the drive motor, a groove is formed inside one side of the disk, a slider is slidably connected inside the groove, a first connecting rod is rotatably connected to the outside of the slider, a second connecting rod is rotatably connected to the end of the first connecting rod away from the slider, the outside of the second connecting rod is slidably connected to the first frame, and a second frame is fixedly connected to the dry electrostatic precipitator box near the bottom of the groove.

[0015] Preferably, the filtration mechanism includes a filter box, the top of which is fitted with a sealing cover, and a filter frame is provided inside the filter box. Several filter screens are fitted inside the filter frame, and the number of filter screens is three, with the filter screens evenly distributed inside the filter frame.

[0016] Preferably, a first conduit is fixedly connected to one side of the filter box, one end of the first conduit is fixedly connected to the desulfurization device, the other side of the filter box is fixedly connected to the water pump, and a second conduit is fixedly connected to the output end of the water pump.

[0017] Preferably, a third conduit is fixedly connected to one end of the second conduit, and a plurality of atomizing nozzles are fixedly connected to one side of the third conduit. The number of atomizing nozzles is nine, and the atomizing nozzles are evenly distributed on one side of the third conduit.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows: This industrial silicon submerged arc furnace flue gas desulfurization and denitrification equipment can quickly clean up accumulated dust by setting a dust removal mechanism, thereby improving the dust collection capacity of the equipment. By setting a filtration mechanism, it can prevent the limestone powder slurry desulfurization adsorbent from clogging the atomizing nozzles, thus affecting the desulfurization effect of the equipment. The specific details are as follows:

[0019] 1. By setting up a dust removal mechanism, accumulated dust can be quickly cleaned, thereby improving the dust collection capacity of the equipment. When high voltage DC current is input to the anode plate and cathode rod, the electrode space generates positive and negative electrons, which act on the surface of flue gas particles passing through the electrostatic field. Under the action of electric field force, they move towards the electrode with the opposite limit and deposit on the electrode, thereby achieving the purpose of dust collection. By driving the motor to drive the disc to rotate, the slider moves in the groove, which drives the first connecting rod to rotate. At the same time, by using the limiting effect of the first frame on the second connecting rod, the rotational force of the first connecting rod can be converted into the linear force of the second connecting rod, which can knock and vibrate the anode plate and cathode rod. When the vibrating hammer periodically knocks the two-stage device, the dust adhering to it is shaken off and falls into the ash hopper below, which is then sent to the ash storage silo for comprehensive utilization through the ash discharge device.

[0020] 2. By setting up a filtration mechanism, the limestone powder-based slurry desulfurization adsorbent can be prevented from clogging the atomizing nozzles, thus affecting the desulfurization effect of the equipment. The three-layer filter screen can fully filter the desulfurization adsorbent, preventing limestone particles from clogging the atomizing nozzles. Opening the sealing cover makes it easy to remove the filter frame from the filter box, thereby cleaning the filter screen and preventing clogging that would affect the filtration effect of the device. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0022] Figure 2 This utility model Figure 1 Schematic diagram of the internal structure of a medium-dry electrostatic precipitator;

[0023] Figure 3 This utility model Figure 1 Schematic diagram of the internal structure of the desulfurization unit;

[0024] Figure 4 This utility model Figure 2 Schematic diagram of the side structure at the middle anode plate;

[0025] Figure 5 This utility model Figure 2 Enlarged structural diagram at point A in the middle;

[0026] Figure 6This utility model Figure 2 Enlarged structural diagram at point C;

[0027] Figure 7 This utility model Figure 2 Enlarged structural diagram at point B;

[0028] Figure 8 This utility model Figure 3 Enlarged structural diagram of the middle filter mechanism.

[0029] In the diagram: 1. Dust removal mechanism; 101. Boiler; 102. Denitrification device; 103. Dry electrostatic precipitator; 104. Fan; 105. Desulfurization device; 106. Wet electrostatic precipitator; 107. Chimney; 108. Support frame; 109. First top plate; 110. Anode plate; 111. Cathode rod; 112. Second top plate; 113. Limiting groove; 114. Spring; 115. First frame; 116. 1. Support base; 117. Drive motor; 118. Disc; 119. Groove; 120. Slider; 121. First connecting rod; 122. Second connecting rod; 123. Second frame; 2. Filtering mechanism; 201. Filter box; 202. Sealing cover; 203. Filter frame; 204. Filter screen; 205. First conduit; 206. Water pump; 207. Second conduit; 208. Third conduit; 209. Atomizing nozzle. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] Please see Figure 1-8 This utility model provides a technical solution: a desulfurization and denitrification device for flue gas from an industrial silicon submerged arc furnace, including a dust removal mechanism 1 and a drive motor 117 installed inside the dust removal mechanism 1; a filter mechanism 2 is provided on one side of the dust removal mechanism 1, and a water pump 206 is installed on one side of the filter mechanism 2; the dust removal mechanism 1 includes a boiler 101, and a denitrification device 102 is fixedly connected to one side of the boiler 101; a dry electrostatic precipitator box 103 is fixedly connected to one end of the denitrification device 102 away from the boiler 101, a fan 104 is fixedly connected to one end of the dry electrostatic precipitator box 103, a desulfurization device 105 is fixedly connected to one end of the fan 104, and a flue gas cooling device is provided at the end of the denitrification device 102;

[0032] A wet electrostatic precipitator 106 is fixedly connected to one end of the desulfurization device 105 away from the fan 104. A chimney 107 is fixedly connected to one side of the wet electrostatic precipitator 106. Several supports 108 are fixedly connected to the top side inside the dry electrostatic precipitator box 103. There are four supports 108, which are evenly distributed on the top side inside the dry electrostatic precipitator box 103. A first top plate 109 is fixedly connected to the bottom side of the supports 108. Several anode plates 110 are fixedly connected to the bottom side of the first top plate 109. There are one hundred and thirty-two anode plates 110, which are evenly distributed on the bottom side of the first top plate 109. By setting the supports 108, the position of the anode plates 110 can be limited. The one hundred and thirty-two anode plates 110 can form twelve columns, with eleven in each column, and are evenly distributed inside the dry electrostatic precipitator box 103.

[0033] A cathode rod 111 is provided on one side of the anode plate 110. The top end of the cathode rod 111 passes through the first top plate 109 and is fixedly connected to the second top plate 112. The dry electrostatic precipitator 103 has symmetrical limit grooves 113 on both sides near the second top plate 112. Springs 114 are fixedly connected inside the two limit grooves 113. One end of the spring 114 is fixedly connected to the second top plate 112. A first frame 115 is provided at the center of the top of the second top plate 112. By setting the spring 114, the second top plate 112 can have a tendency to vibrate up and down.

[0034] The top of the first frame 115 is fixedly connected to the dry electrostatic precipitator box 103. A support base 116 is fixedly connected to the top of the first frame 115. The bottom side of the support base 116 is fixedly connected to the drive motor 117. A disc 118 is fixedly connected to the output end of the drive motor 117. A groove 119 is opened inside one side of the disc 118. A slider 120 is slidably connected inside the groove 119. A first connecting rod 121 is rotatably connected to the outside of the slider 120. A second connecting rod 122 is rotatably connected to the end of the first connecting rod 121 away from the slider 120. The outside of the second connecting rod 122 is slidably connected to the first frame 115. A second frame 123 is fixedly connected to the bottom of the dry electrostatic precipitator box 103 near the groove 119. The internal structure of the second frame 123 is the same as the internal structure of the first frame 115.

[0035] The filtration mechanism 2 includes a filter box 201, a sealing cover 202 is snapped onto the top of the filter box 201, a filter frame 203 is provided inside the filter box 201, and a number of filter screens 204 are snapped onto the inside of the filter frame 203. There are three filter screens 204, and the filter screens 204 are evenly distributed inside the filter frame 203. By setting the filter screens 204, limestone powder can be filtered.

[0036] A first conduit 205 is fixedly connected to one side of the filter box 201. One end of the first conduit 205 is fixedly connected to the desulfurization device 105. The other side of the filter box 201 is fixedly connected to the water pump 206. A second conduit 207 is fixedly connected to the output end of the water pump 206.

[0037] One end of the second conduit 207 is fixedly connected to the third conduit 208. Several atomizing nozzles 209 are fixedly connected to one side of the third conduit 208. There are nine atomizing nozzles 209, and they are evenly distributed on one side of the third conduit 208. The third conduit 208 has three layers in total, thereby improving the full contact between the limestone solution and the flue gas.

[0038] Working principle: Before using this industrial silicon submerged arc furnace flue gas desulfurization and denitrification equipment, it is necessary to check the overall condition of the device to ensure it can operate normally. Figure 1 - Figure 8 As shown, the flue gas generated by the boiler is first denitrified by the denitrification device 102. The reducing agent ammonia is uniformly mixed with the flue gas and then passed together through a deammoniation reactor filled with catalyst. The nitrogen oxides in the flue gas and ammonia undergo a reduction reaction, so that the nitrogen oxide content in the flue gas is controlled below the emission limit. After the denitrification treatment, the flue gas enters the dry electrostatic precipitator 103 for dust removal. When high voltage DC current is input to the anode plate 110 and the cathode rod 111, the electrode space generates positive and negative electrons, which act on the surface of the flue gas particles passing through the electrostatic field. Under the action of the electric field force, they move to the electrode with the opposite limit and are deposited on the electrode, thereby achieving the purpose of dust collection.

[0039] Secondly, by driving the disc 118 to rotate through the drive motor 117, the slider 120 moves within the groove 119, which in turn drives the first connecting rod 121 to rotate. At the same time, by utilizing the limiting effect of the first frame 115 on the second connecting rod 122, the rotational force of the first connecting rod 121 can be converted into the linear force of the second connecting rod 122, thereby enabling the anode plate 110 and cathode rod 111 to be struck and vibrated. When the vibrating hammer periodically strikes the two-stage device, the dust adhering to it is shaken off and falls into the ash hopper below, which is then discharged to the ash storage silo for comprehensive utilization.

[0040] Then, the cooled flue gas enters the desulfurization device 105, and at the same time, the water pump 206 is started to spray the slurry desulfurization adsorbent made of filtered limestone powder from the atomizing nozzle and mix it with the flue dust to carry out a chemical reaction, thereby achieving the desulfurization effect. Then, the flue dust undergoes secondary dust removal treatment through a wet electrostatic precipitator and is finally discharged through the chimney.

[0041] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. 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 desulfurization and denitrification device for flue gas from an industrial silicon submerged arc furnace, comprising a dust removal mechanism (1) and a drive motor (117) installed inside the dust removal mechanism (1); A filter mechanism (2) is provided on one side of the dust removal mechanism (1), and a water pump (206) is installed on one side of the filter mechanism (2); Its features are, Also includes: The dust removal mechanism (1) includes a boiler (101), and a denitrification device (102) is fixedly connected to one side of the boiler (101); Among them, the denitrification device (102) is fixedly connected to a dry electrostatic precipitator (103) at one end away from the boiler (101), and a fan (104) is fixedly connected to one end of the dry electrostatic precipitator (103), and a desulfurization device (105) is fixedly connected to one end of the fan (104). Among them, a wet electrostatic precipitator (106) is fixedly connected to one end of the desulfurization device (105) away from the fan (104), and a chimney (107) is fixedly connected to one side of the wet electrostatic precipitator (106).

2. The industrial silicon submerged arc furnace flue gas desulfurization and denitrification equipment according to claim 1, characterized in that: The top side of the dry electrostatic precipitator (103) is fixedly connected to a number of supports (108). There are four supports (108), and the supports (108) are evenly distributed on the top side of the dry electrostatic precipitator (103). The bottom side of the supports (108) is fixedly connected to a first top plate (109). The bottom side of the first top plate (109) is fixedly connected to a number of anode plates (110). There are one hundred and thirty-two anode plates (110), and the anode plates (110) are evenly distributed on the bottom side of the first top plate (109).

3. The industrial silicon submerged arc furnace flue gas desulfurization and denitrification equipment according to claim 2, characterized in that: A cathode rod (111) is provided on one side of the anode plate (110). The top end of the cathode rod (111) passes through the first top plate (109) and is fixedly connected to the second top plate (112). The dry electrostatic precipitator (103) has symmetrically opened limiting grooves (113) on both sides near the second top plate (112). Springs (114) are fixedly connected inside the two limiting grooves (113). One end of the spring (114) is fixedly connected to the second top plate (112). A first frame (115) is provided at the center of the top of the second top plate (112).

4. The industrial silicon submerged arc furnace flue gas desulfurization and denitrification equipment according to claim 3, characterized in that: The top of the first frame (115) is fixedly connected to the dry electrostatic precipitator box (103). A support base (116) is fixedly connected to the top of the first frame (115). The bottom side of the support base (116) is fixedly connected to the drive motor (117). A disc (118) is fixedly connected to the output end of the drive motor (117). A groove (119) is provided inside one side of the disc (118). A slider (120) is slidably connected inside the groove (119). A first connecting rod (121) is rotatably connected to the outside of the slider (120). A second connecting rod (122) is rotatably connected to the end of the first connecting rod (121) away from the slider (120). The outside of the second connecting rod (122) is slidably connected to the first frame (115). A second frame (123) is fixedly connected to the bottom of the dry electrostatic precipitator box (103) near the groove (119).

5. The industrial silicon submerged arc furnace flue gas desulfurization and denitrification equipment according to claim 1, characterized in that: The filtration mechanism (2) includes a filter box (201), a sealing cover (202) is snapped onto the top of the filter box (201), a filter frame (203) is provided inside the filter box (201), and a number of filter screens (204) are snapped onto the inside of the filter frame (203). There are three filter screens (204), and the filter screens (204) are evenly distributed inside the filter frame (203).

6. The industrial silicon submerged arc furnace flue gas desulfurization and denitrification equipment according to claim 5, characterized in that: A first conduit (205) is fixedly connected to one side of the filter box (201), one end of the first conduit (205) is fixedly connected to the desulfurization device (105), the other side of the filter box (201) is fixedly connected to the water pump (206), and the output end of the water pump (206) is fixedly connected to the second conduit (207).

7. The industrial silicon submerged arc furnace flue gas desulfurization and denitrification equipment according to claim 6, characterized in that: One end of the second conduit (207) is fixedly connected to a third conduit (208), and a plurality of atomizing nozzles (209) are fixedly connected to one side of the third conduit (208). There are nine atomizing nozzles (209), and the atomizing nozzles (209) are evenly distributed on one side of the third conduit (208).

Images