A ceramic waste gas desulfurization and dust removal device

Abstract

The present invention belongs to the technical field of ceramic waste gas treatment, and in particular, relates to a ceramic waste gas desulfurization and dust removal device, including a desulfurization tower, a wet electrostatic precipitator mechanism and a PLC controller. The desulfurization tower and the wet electrostatic precipitator mechanism are connected through a flue gas conveying channel, and the lower end of the desulfurization tower is fixedly connected to an inlet flue. The present invention adopts a one-stop purification equipment, which occupies a small area and can achieve a good treatment effect on multiple pollution factors such as particulate matter, sulfur dioxide, nitrogen oxides, etc. in the flue gas at one time. The desulfurization process technology is mature, and the desulfurization efficiency is greater than 99%, which can meet the flue gas treatment needs of various capacities. The wet electrostatic precipitator has high efficiency, and uses water spraying to clean the dust on the electrode surface. There is no secondary dust generation, which can ensure that the dust emission concentration at the outlet of the dust collector is ≤5mg / Nm 3 It can better adapt to the current environmental protection management status of the building ceramics industry, has good market promotion value, and has significant environmental and resource benefits.

Description

Technical Field

[0001] The invention belongs to the technical field of ceramic waste gas treatment, and in particular relates to a ceramic waste gas desulfurization and dust removal device. Background Art

[0002] During the production process of ceramic enterprises, kilns and spray drying towers will produce particulate matter, sulfur dioxide, oxynitrides, fluorides, chlorides, lead, cadmium, nickel and their compounds. The traditional treatment method is to separately treat the flue gas from the kiln and spray drying tower. my country's current conventional flue gas purification process is mainly divided into three stages: desulfurization, denitrification and dust removal. Each stage uses different processes and equipment to achieve the removal process of the corresponding single pollutant. The three are independent of each other and do not interfere with each other. The desulfurization tower is the main desulfurization equipment in this method.

[0003] At present, the quality of the surrounding ecological environment has been continuously improved through desulfurization and dust removal devices. However, the equipment used has the disadvantages of complex process, multiple equipment and high operation and maintenance costs, resulting in poor promotion applicability. When the original flue gas passes through the absorption tower, it will evaporate and take away part of the moisture in the absorption tower, and gypsum crystallization will also take away a certain amount of moisture. This will cause the solid concentration in the absorption tower slurry to gradually increase, thereby affecting the normal progress of the reaction. In addition, the temperature of the flue gas entering the desulfurization tower is too high, and the high-temperature flue gas has a great impact on the service life of the absorption tower lining rubber. Summary of the invention

[0004] The purpose of the present invention is to provide a ceramic waste gas desulfurization and dust removal device in view of the above problems.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a ceramic waste gas desulfurization and dust removal device, comprising a desulfurization tower, a wet electrostatic precipitator mechanism and a PLC controller, the desulfurization tower and the wet electrostatic precipitator mechanism are connected through a flue gas conveying channel, the lower end of the desulfurization tower is fixedly connected with an inlet flue, one end of the inlet flue is fixedly connected with a booster fan, a water supply and cooling mechanism is installed on the inlet flue, an intermittent temperature measurement feedback mechanism is also fixedly installed on the front side of the inlet flue, a water flow size self-adjusting mechanism is fixedly installed at the water inlet of the water supply and cooling mechanism, a power supply size self-adjusting mechanism electrically connected to the intermittent temperature measurement feedback mechanism is also fixedly installed on the water supply and cooling mechanism, and the power supply size self-adjusting mechanism is electrically connected to the water supply and cooling mechanism;

[0006] A limestone slurry area is provided at the lower end of the interior of the desulfurization tower, an oxidation air duct assembly is also installed in the interior of the desulfurization tower, which is located at the lower end of the limestone slurry area and connected to the limestone slurry area, an air distribution tray is also fixedly installed in the interior of the desulfurization tower, and three groups of spray assemblies distributed up and down are also fixedly installed in the interior of the desulfurization tower, and the spray assemblies are connected to the limestone slurry area through a circulation pipe, a slurry circulation pump and a filter shell located at the liquid inlet of the slurry circulation pump are installed on the circulation pipe, a filter screen is fixedly installed in the filter shell, a demister is fixedly installed on the top of the inner wall of the desulfurization tower, a side-entry agitator is fixedly installed on the side wall of the desulfurization tower corresponding to the limestone slurry area, and a laser rangefinder is also fixedly installed on the inner wall of the desulfurization tower, which is located at the upper end of the limestone slurry area;

[0007] The water replenishment and cooling mechanism, the intermittent temperature measurement feedback mechanism, the water flow size self-adjusting mechanism, the power supply size self-adjusting mechanism and the laser rangefinder are all electrically connected to the PLC controller.

[0008] In the above-mentioned ceramic waste gas desulfurization and dust removal device, the wet electrostatic precipitator mechanism includes a dust collector shell, an anode tube assembly is fixedly installed on the inner wall of the dust collector shell, a cathode wire is fixedly installed in the anode tube assembly through a fixing part, a high-frequency power supply and an insulating box are fixedly installed on the upper end of the dust collector shell, the high-frequency power supply and the cathode wire are electrically connected, the upper end of the dust collector shell is fixedly connected to an exhaust chimney, and a dust washing assembly is also fixedly installed on the top of the inner wall of the dust collector shell.

[0009] In the above-mentioned ceramic waste gas desulfurization and dust removal device, the water replenishment and cooling mechanism includes a plurality of spray heads fixedly inserted in the upper end of the inlet flue, and the upper ends of the plurality of spray heads are fixedly connected to the same buffer tube. A cooling shell is also fixedly installed on the rear side of the upper end of the inlet flue, and a plurality of semiconductor refrigeration rods are fixedly inserted in the upper end of the cooling shell. One side of the cooling shell is fixedly connected to a water supply pipe, and the side wall of the water supply pipe is fixedly connected to a return water pipe. The other side of the cooling shell is fixedly connected to the upper end of the buffer tube through a water supply pipe.

[0010] In the above-mentioned ceramic waste gas desulfurization and dust removal device, the intermittent temperature measurement feedback mechanism includes a plurality of heat-conducting rods fixedly inserted on the inner side of the front end of the inlet flue, the upper ends of the plurality of heat-conducting rods penetrate the upper end of the inlet flue, and are fixedly connected to the same heat-conducting plate, the upper end of the inlet flue is also fixedly provided with an L-shaped vertical plate, the horizontal part of the L-shaped vertical plate is fixedly connected to an insulating shell through a lifting and moving mechanism, the lower end of the insulating shell is fixedly inserted with a plurality of heat transfer plates, the lower ends of the plurality of heat transfer plates are fixedly connected with the same heat collecting plate, the upper ends of the plurality of heat transfer plates are fixedly connected with the same heat transfer frame, a negative coefficient thermistor is fixedly inserted in the heat transfer frame, and an intermittent power supply trigger mechanism is also fixedly installed on the outer wall of the L-shaped vertical plate.

[0011] In the above-mentioned ceramic waste gas desulfurization and dust removal device, the water flow size self-adjusting mechanism includes an on-off valve seat fixedly connected to the water supply pipe, and a valve plate is rotatably connected to the on-off valve seat through a transmission shaft. The lower end of the transmission shaft passes through the lower end of the on-off valve seat and is fixedly connected to a transmission gear. The outer wall of the cooling shell is fixedly connected to a cross plate, and the upper end of the cross plate is symmetrically fixedly connected to two guide frames, and the same transmission rack meshing with the transmission gear is slidably sleeved in the two guide frames, and a side plate is fixedly connected to the upper side of one end of the cross plate, and the side wall of the side plate is fixedly connected to an attraction electromagnetic plate, and one end of the transmission rack is fixedly connected to an attraction permanent magnet plate, and the other end of the transmission rack is fixedly connected to the outer wall of the cooling shell with the same return spring.

[0012] In the above-mentioned ceramic waste gas desulfurization and dust removal device, the power supply size self-adjusting mechanism includes an insulating shell, a resistance rod is fixedly installed on one side of the inner wall of the insulating shell, and the inner wall of the insulating shell is fixedly connected to multiple vertically arranged guide slide rods, and the multiple guide slide rods are externally slidably sleeved with the same adjustment block, one end of the adjustment block is fixedly connected to a conductive connector electrically connected to the resistance rod, the upper surface of the adjustment block is fixedly connected to an adjustment permanent magnet plate, the top of the inner wall of the insulating shell is fixedly connected to an adjustment electromagnetic plate, the lower surface of the adjustment block is fixedly connected to a reset permanent magnet plate, and the bottom of the inner wall of the insulating shell is fixedly connected to a reset electromagnetic plate.

[0013] In the above-mentioned ceramic waste gas desulfurization and dust removal device, the lifting and moving mechanism includes a plurality of lifting rods symmetrically fixedly connected to the upper end of the insulation shell, the upper end of the lifting rod is fixedly connected with an anti-slip plate, the lower end of the anti-slip plate and the upper end of the L-shaped vertical plate are fixedly connected with a reset spring mounted outside the lifting rod, the lower end of the horizontal part of the L-shaped vertical plate is fixedly installed with a thrust electromagnetic plate, and the upper end of the insulation shell is fixedly connected with a thrust permanent magnet plate.

[0014] In the above-mentioned ceramic waste gas desulfurization and dust removal device, the intermittent power supply trigger mechanism includes a positioning shell, a power supply electrical connection block is fixedly connected to one side of the inner wall of the positioning shell, a rotating shaft is rotatably connected to the center of the positioning shell through a bearing, a power supply conductive block is fixedly sleeved on the shaft wall of the rotating shaft, and a rotating motor is fixedly installed on the outer wall of the positioning shell, and the output end of the rotating motor is fixedly connected to one end of the rotating shaft.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. Through the desulfurization tower, flue gas conveying channel, wet electrostatic precipitator, inlet flue, booster fan, limestone slurry area, oxidation duct assembly, air distribution tray, spray assembly, circulation pipe, slurry circulation pump, filter shell, filter screen plate, demister, side-entry agitator, a one-stop purification equipment is adopted, which occupies a small area and can achieve a good treatment effect on multiple pollution factors such as particulate matter, sulfur dioxide, nitrogen oxides, etc. in the flue gas at one time. The desulfurization process technology is mature, the operation is convenient, and the operation management is standardized. The desulfurization efficiency is greater than 99%, which can meet the flue gas treatment needs of various capacities. The wet electrostatic precipitator has high efficiency and uses water spray to clean the dust on the electrode surface. There is no secondary dust generation, which can ensure that the dust emission concentration at the outlet of the dust collector is ≤5mg / Nm 3 It can better adapt to the current environmental protection management status of the building ceramics industry, has good market promotion value, and has significant environmental and resource benefits.

[0017] 2. Through the water replenishment and cooling mechanism, intermittent temperature measurement feedback mechanism, power supply size self-adjustment mechanism, lifting and moving mechanism, and intermittent power supply trigger mechanism, the cooling energy can be regulated according to the temperature of the flue gas entering, so that the temperature of the flue gas entering the desulfurization tower is maintained in an appropriate range, avoiding the problem of high-temperature flue gas in accidental industrial and mining industries affecting the use of the desulfurization tower lining.

[0018] 3. Through the self-adjusting mechanism of water flow and laser rangefinder, the amount of water replenishment can be automatically adjusted according to the liquid level in the limestone slurry area, thereby avoiding the problem of increased fixed concentration in the limestone slurry area affecting the normal desulfurization reaction.

[0019] To sum up: the present invention adopts a one-stop purification equipment with a small footprint, and can achieve a good treatment effect on multiple pollution factors such as particulate matter, sulfur dioxide, nitrogen oxides, etc. in the flue gas at one time. The desulfurization process technology is mature, the operation is convenient, and the operation management is standardized. The desulfurization efficiency is greater than 99%, which can meet the flue gas treatment needs of various capacities. The wet electrostatic precipitator has high efficiency and uses water spray to clean the dust on the surface of the electrode without secondary dust generation. The dust emission concentration at the outlet of the dust collector can be guaranteed to be ≤5mg / Nm3, which can better adapt to the current environmental protection management status of the building ceramics industry, has good market promotion value, and the environmental and resource benefits are very significant. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of a ceramic waste gas desulfurization and dust removal device provided by the present invention;

[0021] Figure 2 It is a schematic structural diagram of a side cross-section of a desulfurization tower of a ceramic waste gas desulfurization and dust removal device provided by the present invention;

[0022] Figure 3It is a cross-sectional structural schematic diagram of a wet electrostatic precipitator mechanism of a ceramic waste gas desulfurization and dust removal device provided by the present invention;

[0023] Figure 4 It is a partially enlarged cross-sectional structural schematic diagram of an inlet flue of a ceramic waste gas desulfurization and dust removal device provided by the present invention;

[0024] Figure 5 It is a cross-sectional structural schematic diagram of an intermittent temperature measurement feedback mechanism of a ceramic waste gas desulfurization and dust removal device provided by the present invention;

[0025] Figure 6 It is a cross-sectional structural schematic diagram of a water flow size self-adjusting mechanism of a ceramic waste gas desulfurization and dust removal device provided by the present invention;

[0026] Figure 7 It is a cross-sectional structural schematic diagram of a power supply size self-adjusting mechanism of a ceramic waste gas desulfurization and dust removal device provided by the present invention;

[0027] Figure 8 The present invention provides a cross-sectional structural schematic diagram of an intermittent power supply trigger mechanism for a ceramic waste gas desulfurization and dust removal device.

[0028] In the figure: 1 desulfurization tower, 2 flue gas conveying channel, 3 wet electrostatic precipitator mechanism, 31 precipitator shell, 32 anode tube assembly, 33 cathode line, 34 high frequency power supply, 35 insulation box, 36 exhaust chimney, 37 dust washing assembly, 4 water replenishment cooling mechanism, 41 sprinkler head, 42 buffer tube, 43 cooling shell, 44 semiconductor refrigeration rod, 45 water supply pipe, 46 return pipe, 47 water supply pipe, 5 intermittent temperature measurement feedback mechanism, 51 heat conducting rod, 52 heat conducting plate, 53 L-shaped vertical plate, 54 insulation shell, 55 heat transfer plate, 56 heat collecting plate, 57 heat transfer frame, 58 negative coefficient thermistor, 6 water flow size self-adjusting mechanism, 61 on-off valve seat, 62 transmission shaft, 63 valve plate, 64 transmission gear, 65 horizontal plate, 66 guide frame, 67 transmission rack, 68 side plate, 69 suction electromagnetic plate, 610 suction permanent magnetic plate , 611 pull-back spring, 7 power supply size self-adjusting mechanism, 71 insulating shell, 72 resistor rod, 73 guide slide rod, 74 adjustment block, 75 conductive contact piece, 76 adjustment permanent magnet plate, 77 adjustment electromagnetic plate, 78 reset permanent magnet plate, 79 reset electromagnetic plate, 8 lifting and moving mechanism, 81 lifting rod, 82 anti-drop plate, 83 reset spring, 84 thrust electromagnetic plate, 85 thrust permanent magnet plate, 9 intermittent power supply trigger mechanism, 91 positioning shell, 92 power supply electrical connection block, 93 rotating shaft, 94 power supply conductive block, 95 rotating motor, 10 inlet flue, 11 booster fan, 12 limestone slurry area, 13 oxidation air duct assembly, 14 air distribution tray, 15 spray assembly, 16 circulation pipe, 17 slurry circulation pump, 18 filter shell, 19 filter screen plate, 20 demister, 21 side-entry agitator, 22 laser rangefinder. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0030] like Figure 1-Figure 8 As shown, a ceramic waste gas desulfurization and dust removal device includes a desulfurization tower 1, a wet electrostatic precipitator mechanism 3 and a PLC controller. The wet electrostatic precipitator mechanism 3 includes a dust collector shell 31. An anode tube assembly 32 is fixedly installed on the inner wall of the dust collector shell 31. A cathode line 33 is fixedly installed in the anode tube assembly 32 through a fixing part. A high-frequency power supply 34 and an insulating box 35 are fixedly installed on the upper end of the dust collector shell 31. The high-frequency power supply 34 and the cathode line 33 are electrically connected. The upper end of the dust collector shell 31 is fixedly connected to an exhaust chimney 36. A dust washing assembly 37 is also fixedly installed on the top of the inner wall of the dust collector shell 31.

[0031] The desulfurization tower 1 and the wet electrostatic precipitator mechanism 3 are connected through a flue gas conveying channel 2. The lower end of the desulfurization tower 1 is fixedly connected with an inlet flue 10, one end of the inlet flue 10 is fixedly connected with a booster fan 11, and a water replenishment and cooling mechanism 4 is installed on the inlet flue 10. The water replenishment and cooling mechanism 4 includes a plurality of spray heads 41 fixedly inserted in the upper end of the inlet flue 10, and the upper ends of the plurality of spray heads 41 are fixedly connected with the same buffer tube 42. A cooling shell 43 is also fixedly installed on the rear side of the upper end of the inlet flue 10, and a plurality of semiconductor refrigeration rods 44 are fixedly inserted in the upper end of the cooling shell 43. One side of the cooling shell 43 is fixedly connected with a water supply pipe 45, and the side wall of the water supply pipe 45 is fixedly connected with a return water pipe 46. The other side of the cooling shell 43 is fixedly connected with the upper end of the buffer tube 42 through a water supply pipe 47.

[0032] An intermittent temperature measurement feedback mechanism 5 is also fixedly installed on the front side of the inlet flue 10. The intermittent temperature measurement feedback mechanism 5 includes a plurality of heat-conducting rods 51 fixedly inserted on the inner side of the front end of the inlet flue 10. The upper ends of the plurality of heat-conducting rods 51 penetrate the upper end of the inlet flue 10 and are fixedly connected to the same heat-conducting plate 52. An L-shaped vertical plate 53 is also fixedly installed on the upper end of the inlet flue 10. The horizontal portion of the L-shaped vertical plate 53 is fixedly connected to a heat insulating shell 54 through a lifting and moving mechanism 8. A plurality of heat transfer plates 55 are fixedly inserted at the lower end of the heat insulating shell 54. The lower ends of the plurality of heat transfer plates 55 are fixedly connected to the same heat collecting plate 56. The upper ends of the plurality of heat transfer plates 55 are fixedly connected to the same heat transfer frame 57. A negative coefficient thermistor 58 is fixedly inserted in the heat transfer frame 57.

[0033] The lifting and moving mechanism 8 includes a plurality of lifting rods 81 symmetrically fixedly connected to the upper end of the heat-insulating shell 54, the upper end of the lifting rod 81 is fixedly connected with an anti-slip plate 82, the lower end of the anti-slip plate 82 and the upper end of the L-shaped vertical plate 53 are fixedly connected with a return spring 83 mounted outside the lifting rod 81, a thrust electromagnetic plate 84 is fixedly installed at the lower end of the horizontal part of the L-shaped vertical plate 53, and a thrust permanent magnet plate 85 is fixedly connected to the upper end of the heat-insulating shell 54.

[0034] An intermittent power supply trigger mechanism 9 is also fixedly installed on the outer wall of the L-shaped vertical plate 53, and the intermittent power supply trigger mechanism 9 includes a positioning shell 91, and a power supply electrical connection block 92 is fixedly connected to one side of the inner wall of the positioning shell 91. A rotating shaft 93 is rotatably connected to the center of the positioning shell 91 through a bearing, and a power supply conductive block 94 is fixedly sleeved on the shaft wall of the rotating shaft 93. A rotating motor 95 is fixedly installed on the outer wall of the positioning shell 91, and the output end of the rotating motor 95 is fixedly connected to one end of the rotating shaft 93.

[0035] A water flow rate self-regulating mechanism 6 is fixedly installed at the water inlet of the water replenishment and cooling mechanism 4, and the water flow rate self-regulating mechanism 6 includes an on-off valve seat 61 fixedly connected to the water supply pipe 45, and a valve plate 63 is rotatably connected to the on-off valve seat 61 through a transmission shaft 62. The lower end of the transmission shaft 62 passes through the lower end of the on-off valve seat 61 and is fixedly connected to a transmission gear 64. A cross plate 65 is fixedly connected to the outer wall of the cooling shell 43, and two guide frames 66 are symmetrically fixedly connected to the upper end of the cross plate 65. The same transmission rack 67 meshing with the transmission gear 64 is slidably sleeved in the two guide frames 66. A side plate 68 is fixedly connected to the upper side of one end of the cross plate 65, and a suction electromagnetic plate 69 is fixedly connected to the side wall of the side plate 68. One end of the transmission rack 67 is fixedly connected to the suction permanent magnet plate 610, and the other end of the transmission rack 67 is fixedly connected to the outer wall of the cooling shell 43 with the same pull-back spring 611.

[0036] A power supply size self-adjusting mechanism 7 electrically connected to the intermittent temperature measurement feedback mechanism 5 is also fixedly installed on the water replenishment and cooling mechanism 4. The power supply size self-adjusting mechanism 7 includes an insulating shell 71, and a resistor rod 72 is fixedly installed on one side of the inner wall of the insulating shell 71. The inner wall of the insulating shell 71 is fixedly connected to a plurality of vertically arranged guide slide rods 73, and the plurality of guide slide rods 73 are externally slidably sleeved with the same adjustment block 74, one end of the adjustment block 74 is fixedly connected to a conductive contact piece 75 electrically connected to the resistor rod 72, the upper surface of the adjustment block 74 is fixedly connected to an adjustment permanent magnet plate 76, the top of the inner wall of the insulating shell 71 is fixedly connected to an adjustment electromagnetic plate 77, the lower surface of the adjustment block 74 is fixedly connected to a reset permanent magnet plate 78, and the bottom of the inner wall of the insulating shell 71 is fixedly connected to a reset electromagnetic plate 79.

[0037] The power supply size self-adjusting mechanism 7 is electrically connected to the water replenishment and cooling mechanism 4. A limestone slurry area 12 is provided at the lower end of the desulfurization tower 1. An oxidation air duct assembly 13 located at the lower end of the limestone slurry area 12 and connected to the limestone slurry area 12 is also installed inside the desulfurization tower 1. An air distribution tray 14 located at the upper end of the limestone slurry area 12 is also fixedly installed inside the desulfurization tower 1. Three groups of spray assemblies 15 distributed up and down are also fixedly installed inside the desulfurization tower 1. The spray assemblies 15 are connected to the limestone slurry area 12. The limestone slurry areas 12 are connected through a circulation pipe 16, on which a slurry circulation pump 17 and a filter shell 18 located at the liquid inlet of the slurry circulation pump 17 are installed, a filter screen plate 19 is fixedly installed in the filter shell 18, a demister 20 is fixedly installed on the top of the inner wall of the desulfurization tower 1, a side-entry agitator 21 is fixedly installed on the side wall of the desulfurization tower 1 corresponding to the limestone slurry area 12, and a laser rangefinder 22 located at the upper end of the limestone slurry area 12 is also fixedly installed on the inner wall of the desulfurization tower 1;

[0038] The water replenishment and cooling mechanism 4, the intermittent temperature measurement feedback mechanism 5, the water flow size self-adjusting mechanism 6, the power supply size self-adjusting mechanism 7 and the laser rangefinder 22 are all electrically connected to the PLC controller.

[0039] The operating principle of the present invention is described as follows: after the exhaust gas enters the desulfurization tower 1, it is redistributed by the air distribution tray 14, so that the flue gas flows evenly from bottom to top. The flue gas is washed by the air distribution layer, which, on the one hand, reduces the temperature of the flue gas entering the desulfurization tower 1, which is beneficial to prolonging the service life of the anti-corrosion layer of the desulfurization tower 1. On the other hand, it allows SO3 to be dissolved in water, which is beneficial to the removal of SO3 and avoids the "blue smoke" generated by the flue gas combining with water vapor after entering the desulfurization tower 1. After the flue gas leaves the air distribution tray 14, the slurry circulation pump 17 cooperates with the circulation pipe 16 to spray the limestone slurry in the limestone slurry area 12 through the spray assembly 15. The flue gas reacts with the limestone slurry droplets sprayed downward from the spray assembly 15 to wash away harmful gases such as SO2, SO3, HF, and HCl. The fresh limestone slurry prepared by the limestone slurry preparation system is pumped into the limestone slurry area 12 through the limestone slurry pump, connected to the inlet of the slurry circulation pump 17, and enters the spray assembly 15 together with the circulating slurry. The limestone dissolves in the slurry pool and reacts with the SO2 absorbed by the slurry. The slurry sprayed from the high-efficiency hollow cone nozzle on the spray assembly 15 forms mist droplets of about 2 mm under the action of spraying, producing efficient and sufficient gas-liquid contact in the tower. During the descent of the droplets, the slurry As the droplet surface absorbs SO2, the surface tends to absorb saturation and stops absorbing. An air distribution tray 14 is set inside the desulfurization tower 1. When the flue gas flows upward and passes through the tray channel, a strong Venturi effect is generated. The surface liquid layer is stripped by the high-speed upward airflow. In the turbulent layer, a new two-phase mass transfer surface is generated. Due to the generation of a new gas-liquid contact interface, the old absorption equilibrium process is broken, and the absorption process that originally tended to stop starts again. The absorbed SO2 reacts with limestone in the suspension process to generate calcium sulfite. In the middle area of ​​the limestone slurry area 12 in the desulfurization tower 1, the air supplied by the oxidation fan passes through the limestone slurry area arranged in the limestone slurry area. The oxidation air duct assembly 13 in the limestone slurry area 12 introduces air into the slurry pool. Under the action of the side-entry agitator 21, the air entering the slurry pool forms tiny air bubbles, which evenly pass through the limestone slurry area 12 to oxidize the CaSO3 in the limestone slurry area 12 into CaSO4. The newly generated CaSO4 crystallizes in the gypsum seed crystals and forms crystals (CaSO4·2H2O). The gypsum slurry is pumped into the gypsum slurry cyclone through the gypsum slurry discharge pump for primary dehydration. The gypsum slurry at the bottom of the cyclone enters the vacuum belt dehydrator for secondary dehydration to make its water content less than 10%, and then is sent to the gypsum warehouse by a conveyor.

[0040] When the slurry circulation pump 17 pumps the slurry in the tower from the lower slurry pool to the spray assembly 15, it is sprayed through the nozzle to form atomized droplets with fine particles and high reaction activity. The mass transfer is enhanced by setting a uniform air layer to reduce the liquid-gas ratio. At the same time, a filter screen is added to the inlet of the slurry circulation pump 17 to prevent debris from clogging the nozzle. Since the absorbent slurry in the desulfurization tower 1 is repeatedly circulated through the slurry circulation pump 17 to contact the flue gas, the absorbent utilization rate is very high. The small droplets separated from the flue gas slowly condense into relatively large droplets, and then slide down along the lower part of the blades of the demister 20 until the limestone slurry area 12. The upper part of the desulfurization tower 1 corresponding to the limestone slurry area 12 is provided with an overflow port to ensure that the slurry level is lower than the lower edge of the flue gas inlet of the desulfurization tower 1;

[0041] After being treated in the desulfurization tower 1, the flue gas is sent into the dust collector housing 31 through the flue gas conveying channel 2. The high-frequency power supply 34 supplies high-voltage current to the cathode line 33 for discharge. The current flows to the anode tube assembly 32. The dust and aerosol in the flue gas are charged by this current, and move and adhere to the anode tube assembly 32 through the Coulomb force and the intensity of the current. The anode tube assembly 32 is made of conductive fiberglass with excellent thermal conductivity, and the anode tube assembly 32 is set to a honeycomb structure, so that the inner and outer surfaces of each anode tube assembly 32 become precipitation electrode surfaces, and there is no dead zone between the anode tube assemblies 32. The surface of the anode tube assembly 32 is then washed by the dust washing assembly 37 to perform a dust cleaning operation. During normal operation, the collected droplets will form a water film on the inner surface of the anode tube assembly 32, and dust cleaning is achieved by gravity. The mud removed by liquid washing falls into the ash hopper and is discharged to the dehydration system of the desulfurization system through a slurry pump. The dust is transported to the cement plant with the desulfurized gypsum. Source utilization, the overall one-stop purification equipment is adopted, which occupies a small area and can achieve a good treatment effect on multiple pollution factors such as particulate matter, sulfur dioxide, nitrogen oxides, etc. in the flue gas at one time. The desulfurization process technology is mature, easy to operate, and the operation management is standardized. The desulfurization efficiency is greater than 99%, which can meet the flue gas treatment needs of various capacities. The wet electrostatic precipitator has high efficiency and uses water spray to clean the dust on the surface of the electrode. There is no secondary dust generation, which can ensure that the dust emission concentration at the outlet of the dust collector is ≤5mg / Nm3. It can better adapt to the current environmental protection status of the building ceramics industry, has good market promotion value, and has significant environmental and resource benefits. It is the first to adopt digital empowerment technology in the field of environmental protection, integrating process automation, Internet of Things, big data, digital twins, APC advanced control and other cutting-edge technical means, deeply exploring and analyzing the characteristics and potential laws of the operating data of various environmental protection equipment, integrating the knowledge system of industry experts, and forming industrial-grade equipment intelligent control and fault warning. While ensuring stable ultra-low emissions, it can achieve a 12% reduction in energy consumption, a 40% optimization of personnel allocation, engineering construction collaboration, and intelligent operation and maintenance;

[0042] When the exhaust gas is transported from the inlet flue 10 to the desulfurization tower 1, the temperature of the exhaust gas is fed back to the heat conducting rod 51 and concentratedly fed back to the heat conducting plate 52. The PLC controller drives the rotating motor 95 to rotate at a reduced speed. The rotating motor 95 drives the power supply conductive block 94 to rotate through the rotating shaft 93. When the power supply conductive block 94 contacts the power supply electrical connection block 92, the power supply circuit of the thrust electromagnetic plate 84 is connected. The thrust electromagnetic plate 84 is energized to generate magnetism to cooperate with the thrust permanent magnet plate 85 to push the heat insulation shell 54 to overcome the elastic force of the reset spring 83 and move downward, so that the heat collecting plate 56 The heat collecting plate 56 cooperates with the heat transfer plate 55 to transfer the exhaust gas heat to the negative coefficient thermistor 58 in the heat transfer frame 57. The negative coefficient thermistor 58 is electrically connected to the power supply circuit of the adjustment electromagnetic plate 77. When the power supply conductive block 94 and the power supply electrical connection block 92 are in contact, the power supply circuit of the reset electromagnetic plate 79 is connected for 5s. The reset electromagnetic plate 79 is energized to generate magnetism to cooperate with the reset permanent magnet plate 78 to push the adjustment block 74 upward and reset to the initial position. The conductive contact piece 75 and the resistor rod 72 are electrically connected to the semiconductor refrigeration rod 4 4, the higher the temperature of the exhaust gas, the greater the heat received by the negative coefficient thermistor 58, the smaller the resistance of the negative coefficient thermistor 58, and thus the greater the amount of current flowing through the regulating electromagnetic plate 77, the stronger the magnetism, the greater the distance that the regulating electromagnetic plate 77 cooperates with the regulating permanent magnet plate 76 to drive the regulating block 74 to move downward, and thus the smaller the resistance value of the resistor rod 72 connected, and thus the greater the power supply current of the semiconductor refrigeration rod 44, the better the refrigeration effect, the water supply pipe 45 transports the compensation water to the cooling shell 43, and the temperature of the semiconductor refrigeration rod 44 is reduced. The higher the degree, the flue gas is transported to the buffer pipe 42 and the spray head 41 through the water delivery pipe 47 to spray and cool the flue gas, so that the higher the exhaust gas temperature, the lower the spray cooling temperature. The cooling energy can be adjusted according to the temperature of the flue gas entering, so that the temperature of the flue gas entering the desulfurization tower 1 is kept in an appropriate range, avoiding the problem that the high-temperature flue gas in the accident mine affects the use of the lining rubber of the desulfurization tower 1. The contact time interval between the power supply conductive block 94 and the power supply electrical connection block 92 is 1h, and detection and regulation are performed once every hour to ensure the cooling quality;

[0043] The laser rangefinder 22 monitors the liquid level of the limestone slurry area 12 in real time, and feeds back the obtained information to the PLC controller. When the liquid level of the limestone slurry area 12 is high, the PLC controller controls the power supply device to supply less power to the suction electromagnetic plate 69, so that the return spring 611 drives the transmission rack 67 to move back a greater distance, so that the rotation angle of the valve plate 63 relative to the on-off valve seat 61 is smaller, and the water-passing cross-sectional area of ​​the on-off valve seat 61 is smaller, and the water supply pipe 45 is directed to the cooling shell 43. The smaller the amount of water transported inside, the less water sprayed from the sprinkler head 41. Conversely, the lower the liquid level in the limestone slurry area 12, the larger the opening and closing angle of the valve plate 63, the greater the amount of water transported to the cooling shell 43 by the water supply pipe 45, and the more water sprayed by the sprinkler head 41. Further water volume compensation is performed through the water spraying of the sprinkler head 41, and the amount of water replenishment can be automatically adjusted according to the liquid level in the limestone slurry area 12, thereby avoiding the problem of the increase of the fixed concentration in the limestone slurry area 12 affecting the normal progress of the desulfurization reaction.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A ceramic waste gas desulfurization and dust removal device, comprising a desulfurization tower (1), a wet electrostatic precipitator (3) and a PLC controller, wherein the desulfurization tower (1) and the wet electrostatic precipitator (3) are connected via a flue gas conveying channel (2), characterized in that: The lower end of the desulfurization tower (1) is fixedly connected to an inlet flue (10), one end of the inlet flue (10) is fixedly connected to a booster fan (11), a water supply and cooling mechanism (4) is installed on the inlet flue (10), an intermittent temperature measurement feedback mechanism (5) is also fixedly installed on the front side of the inlet flue (10), a water flow size self-adjusting mechanism (6) is fixedly installed at the water inlet of the water supply and cooling mechanism (4), a power supply size self-adjusting mechanism (7) electrically connected to the intermittent temperature measurement feedback mechanism (5) is also fixedly installed on the water supply and cooling mechanism (4), and the power supply size self-adjusting mechanism (7) is electrically connected to the water supply and cooling mechanism (4); A limestone slurry area (12) is provided at the lower end of the desulfurization tower (1), an oxidation air duct assembly (13) is also installed at the lower end of the limestone slurry area (12) and is connected to the limestone slurry area (12), an air distribution tray (14) is also fixedly installed at the upper end of the limestone slurry area (12) in the desulfurization tower (1), and three groups of spray assemblies (15) are also fixedly installed in the desulfurization tower (1), and a circulation air circulation system is provided between the spray assemblies (15) and the limestone slurry area (12). The desulfurization tower (1) is connected to the desulfurization tower (1) by a pipe (16), a slurry circulation pump (17) and a filter shell (18) located at the liquid inlet of the slurry circulation pump (17) are installed on the circulation pipe (16), a filter screen plate (19) is fixedly installed in the filter shell (18), a demister (20) is fixedly installed on the top of the inner wall of the desulfurization tower (1), a side-entry agitator (21) is fixedly installed on the side wall of the desulfurization tower (1) corresponding to the limestone slurry area (12), and a laser rangefinder (22) is also fixedly installed on the inner wall of the desulfurization tower (1) and located at the upper end of the limestone slurry area (12); The water replenishment and cooling mechanism (4), the intermittent temperature measurement feedback mechanism (5), the water flow size self-adjusting mechanism (6), the power supply size self-adjusting mechanism (7) and the laser rangefinder (22) are all electrically connected to the PLC controller; The wet electrostatic precipitator mechanism (3) comprises a precipitator housing (31), an anode tube assembly (32) is fixedly mounted on the inner wall of the precipitator housing (31), a cathode line (33) is fixedly mounted in the anode tube assembly (32) via a fixing member, a high-frequency power source (34) and an insulating box (35) are fixedly mounted on the upper end of the precipitator housing (31), the high-frequency power source (34) and the cathode line (33) are electrically connected, an exhaust chimney (36) is fixedly connected to the upper end of the precipitator housing (31), and a dust washing assembly (37) is also fixedly mounted on the top of the inner wall of the precipitator housing (31); The water replenishment and cooling mechanism (4) comprises a plurality of spray heads (41) fixedly inserted in the upper end of the inlet flue (10), the upper ends of the plurality of spray heads (41) are fixedly connected to the same buffer tube (42), a cooling shell (43) is also fixedly installed on the rear side of the upper end of the inlet flue (10), a plurality of semiconductor refrigeration rods (44) are fixedly inserted in the upper end of the cooling shell (43), one side of the cooling shell (43) is fixedly connected to a water supply pipe (45), the side wall of the water supply pipe (45) is fixedly connected to a water return pipe (46), and the other side of the cooling shell (43) is fixedly connected to the upper end of the buffer tube (42) through a water supply pipe (47); The intermittent temperature measurement feedback mechanism (5) comprises a plurality of heat-conducting rods (51) fixedly inserted into the inner side of the front end of the inlet flue (10); the upper ends of the plurality of heat-conducting rods (51) penetrate the upper end of the inlet flue (10) and are fixedly connected to a same heat-conducting plate (52); an L-shaped vertical plate (53) is also fixedly installed at the upper end of the inlet flue (10); the horizontal part of the L-shaped vertical plate (53) is fixedly connected to a heat-insulating shell (54) through a lifting and moving mechanism (8); a plurality of heat-transferring plates (55) are fixedly inserted into the lower end of the heat-insulating shell (54); the lower ends of the plurality of heat-transferring plates (55) are fixedly connected to a same heat-collecting plate (56); the upper ends of the plurality of heat-transferring plates (55) are fixedly connected to a same heat-transferring frame (57); a negative coefficient thermistor (58) is fixedly inserted into the heat-transferring frame (57); and an intermittent power supply trigger mechanism (9) is also fixedly installed on the outer wall of the L-shaped vertical plate (53); The water flow size self-adjusting mechanism (6) comprises an on-off valve seat (61) fixedly connected to a water supply pipe (45); a valve plate (63) is rotatably connected to the on-off valve seat (61) via a transmission shaft (62); the lower end of the transmission shaft (62) passes through the lower end of the on-off valve seat (61) and is fixedly connected to a transmission gear (64); a transverse plate (65) is fixedly connected to the outer wall of the cooling shell (43); and two guide frames (66) are symmetrically fixedly connected to the upper end of the transverse plate (65). A transmission rack (67) meshing with a transmission gear (64) is slidably sleeved in each of the guide frames (66); a side plate (68) is fixedly connected to the upper side of one end of the transverse plate (65); a suction electromagnetic plate (69) is fixedly connected to the side wall of the side plate (68); one end of the transmission rack (67) is fixedly connected to a suction permanent magnetic plate (610); and a return spring (611) is fixedly connected between the other end of the transmission rack (67) and the outer wall of the cooling shell (43); The power supply size self-adjusting mechanism (7) comprises an insulating shell (71), a resistor rod (72) is fixedly mounted on one side of the inner wall of the insulating shell (71), a plurality of vertically arranged guide slide bars (73) are fixedly connected to the inner wall of the insulating shell (71), a same adjustment block (74) is slidably sleeved outside the plurality of guide slide bars (73), one end of the adjustment block (74) is fixedly connected to a conductive contact piece (75) electrically connected to the resistor rod (72), an upper surface of the adjustment block (74) is fixedly connected to an adjustment permanent magnet plate (76), an inner wall top of the insulating shell (71) is fixedly connected to an adjustment electromagnetic plate (77), a lower surface of the adjustment block (74) is fixedly connected to a reset permanent magnet plate (78), and an inner wall bottom of the insulating shell (71) is fixedly connected to a reset electromagnetic plate (79); The lifting and moving mechanism (8) comprises a plurality of lifting rods (81) symmetrically fixedly connected to the upper end of the heat-insulating shell (54); the upper end of the lifting rod (81) is fixedly connected to an anti-slip plate (82); the lower end of the anti-slip plate (82) and the upper end of the L-shaped vertical plate (53) are fixedly connected to a return spring (83) sleeved outside the lifting rod (81); the lower end of the horizontal part of the L-shaped vertical plate (53) is fixedly provided with a thrust electromagnetic plate (84); and the upper end of the heat-insulating shell (54) is fixedly connected to a thrust permanent magnetic plate (85); The intermittent power supply trigger mechanism (9) comprises a positioning shell (91), one side of the inner wall of the positioning shell (91) is fixedly connected to a power supply electrical connection block (92), the center of the positioning shell (91) is rotatably connected to a rotating shaft (93) via a bearing, the shaft wall of the rotating shaft (93) is fixedly sleeved with a power supply conductive block (94), and the outer wall of the positioning shell (91) is fixedly mounted with a rotating motor (95), the output end of the rotating motor (95) is fixedly connected to one end of the rotating shaft (93).

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