An ultra-low dust emission control device for a wet flue gas desulfurization scrubber

Abstract

The invention discloses an ultra-low dust emission control device for a wet flue gas desulfurization washing tower, which relates to the technical field of flue gas desulfurization, including a platform, a spray barrel and a treatment tower are fixedly connected to the top of the platform, and also includes: a smoke inlet pipe for air intake is fixedly connected to the bottom of the spray barrel, a rotating disk is arranged inside the spray barrel, a plurality of filter plates for filtering are arranged inside the rotating disk, an upper fixed disk is arranged on the top of the rotating disk, and the rotation of the rotating ring drives the fixedly connected cleaning brush to rotate, so that the cleaning brush rotates and cleans the bottom of the filter plate, and cleans the filter plate with liquid passing through the filter plate, thereby improving the cleaning effect of the filter plate, and as the lower baffle plate is completely lowered, the contact plate at the bottom of the sliding rod contacts the bottom of the upper fixed barrel, thereby exposing the circulation slot, so that the liquid flows out of the upper fixed barrel through the circulation slot, and as the flow of the liquid accelerates, the dust on the filter plate is further taken away.

Description

Technical Field

[0001] The invention relates to the technical field of flue gas desulfurization, and in particular to an ultra-low dust emission control device for a wet flue gas desulfurization washing tower. Background Art

[0002] Flue gas desulfurization technology can be divided into three categories of desulfurization processes: wet, semi-dry and dry, depending on whether water is added during the desulfurization process and the dry and wet forms of the desulfurization products. Among them, wet flue gas desulfurization technology has the advantages of fast reaction speed and high desulfurization efficiency because it is a gas-liquid reaction. Wet flue gas desulfurization technology is relatively mature, widely applicable, safe and reliable in production and operation, and occupies a dominant position among many desulfurization technologies.

[0003] Patent No. CN104587801A is now disclosed, which is a flue gas desulfurization system that can improve the desulfurization accuracy of desulfurization solution and reduce the energy consumption of analysis. The system includes a desulfurization solution analysis system, a washing liquid supply system, a capture liquid supply system, and a desulfurization tower. The desulfurization tower includes a washing section, an absorption section, and a recovery section; the absorption section is provided with a liquid collecting and air distributing device, a spraying system, a filler, a liquid distribution device, a spray desulfurization device, and a demisting device in sequence from bottom to top along the flue gas flow direction; the liquid collecting and air distributing device has a liquid collecting outlet arranged on the tower body; the spraying device has a liquid inlet arranged on the tower body; the liquid inlet is connected to the liquid collecting outlet through a booster device; the liquid collecting outlet is connected to the inlet of the desulfurization solution analysis system; the spray desulfurization device and the liquid distribution device are respectively connected to the outlet of the desulfurization solution analysis system. The use of this desulfurization system can improve the utilization rate of the desulfurization solution, reduce energy consumption, and reduce costs.

[0004] In the actual desulfurization process, it is generally sprayed or injected to fully mix with the flue gas to form a gas-liquid two-phase contact interface, thereby absorbing sulfur dioxide in the flue gas and removing coarse particles in the flue gas. After spraying, a large amount of flue gas will be filtered through a filter. During the filtration process, there will inevitably be a large amount of filtrate on one side of the filter, which will cause blockage in the filter and affect the filtering effect of the flue gas. If cleaning is required, the equipment must be suspended, which will inevitably affect the normal work of flue gas desulfurization. In addition, the filtrate in the flue gas is often difficult to clean. If it is only scraped off, the filtrate will inevitably be stuck in one side of the filter.

[0005] Therefore, it is necessary to provide an ultra-low dust emission control device for a wet flue gas desulfurization scrubber to solve the above technical problems. Summary of the invention

[0006] The object of the present invention is to provide an ultra-low dust emission control device for a wet flue gas desulfurization scrubber to solve the problems of the defects of the prior art mentioned in the above background technology.

[0007] Based on the above ideas, the present invention provides the following technical solutions: a dust ultra-low emission control device for a wet flue gas desulfurization scrubber, comprising a platform, a spray barrel and a treatment tower are fixedly connected to the top of the platform, and further comprising:

[0008] The bottom of the spray barrel is fixedly connected with a smoke inlet pipe for air intake, a rotating disk is arranged inside the spray barrel, a plurality of filter plates for filtering are arranged inside the rotating disk, an upper fixed disk is arranged on the top of the rotating disk, a lower fixed disk is arranged on the bottom of the rotating disk, an upper fixed barrel is fixedly connected to the top of the upper fixed disk, a lower fixed barrel is fixedly connected to the bottom of the lower fixed disk, the upper fixed barrel and the lower fixed barrel are arranged concentrically, a water absorbing member for sucking liquid is arranged inside the upper fixed barrel, a traction member is arranged on the top of the upper fixed disk, and when the rotating disk rotates, the water absorbing member is pulled by the traction member to absorb water, a closing member is arranged inside the lower fixed barrel, and when one of the filter plates rotates between the upper fixed barrel and the lower fixed barrel, liquid is injected between the upper fixed barrel and the lower fixed barrel through the water absorbing member and the closing member to recoil the filter plate;

[0009] The bottom of the lower fixed plate is fixedly connected with a spraying member, which is arranged below one of the filter plates, and the top of the upper fixed plate is fixedly connected with a smoke conveying pipe, which is kept in the same straight line with one of the filter plates and the spraying member, so that the smoke passes through the spraying member, the filter plate and the smoke conveying pipe in sequence and is conveyed to the inside of the treatment tower;

[0010] A filtration module and a demisting module are sequentially arranged inside the processing tower, a wet electrostatic precipitator module is arranged on the top of the processing tower, and a chimney is arranged on the top of the wet electrostatic precipitator module.

[0011] As a further solution of the present invention: the upper fixed plate is fixedly connected to the top of the spray barrel through a support plate, a drive motor is fixedly connected to the top of the upper fixed plate, the output shaft of the drive motor passes through the upper fixed plate and is fixedly connected to the rotating plate, and the lower fixed plate is fixedly connected to the inner wall of the spray barrel.

[0012] As a further solution of the present invention: the water-absorbing component includes an upper pressure plate arranged inside the upper fixed cylinder, a plurality of telescopic rods are fixedly connected between the upper pressure plate and the top end of the upper fixed cylinder, springs are sleeved on the outside of the plurality of telescopic rods, a foldable water-absorbing bag is fixedly connected between the upper pressure plate and the top end of the upper fixed cylinder, a water outlet pipe is arranged at the bottom of the upper pressure plate, the water outlet pipe is connected to the water-absorbing bag, a connecting pipe is fixedly connected to the top of the water-absorbing bag, the connecting pipe extends to the bottom end of the spray cylinder, and an electromagnet is fixedly connected to the top of the upper pressure plate.

[0013] As a further solution of the present invention: the closing member includes a lower baffle plate slidably connected to the inside of the lower fixed cylinder, the top of the lower baffle plate is provided with a plurality of grooves, the plurality of grooves are each provided with a sliding rod, the sliding rod passes through the lower baffle plate and is slidably connected to the lower baffle plate, the grooves are each provided with a circulation groove for circulating liquid, the top of the sliding rod is fixedly connected with an upper sealing plate, and when the lower baffle plate rises, the upper sealing plate closes the circulation groove, and the bottom of the sliding rod is fixedly connected with a contact plate.

[0014] As a further solution of the present invention: the closure member further comprises a magnetic plate, which is fixedly connected to the outer side of the lower baffle. When the electromagnet is energized, the magnetic plate is magnetically attracted to the lower baffle, thereby driving the lower baffle to rise.

[0015] As a further solution of the present invention: the traction member includes a rotating rod rotatably connected to the top of the upper fixed disk, a gear is fixedly connected to the outside of the rotating rod, a torsion spring is fixedly connected between the rotating rod and the upper fixed disk, a winding disk is fixedly connected to the top of the rotating rod, a traction rope is wrapped and fixedly connected to the outside of the winding disk, one end of the traction rope passes through the top of the upper fixed cylinder and is fixedly connected to the upper pressure plate, a plurality of guide frames for guiding the traction rope are arranged on the outside of the upper fixed cylinder, an arc-shaped rack corresponding to a plurality of filter plates is fixedly connected to the top of the rotating disk, the plurality of arc-shaped racks are respectively and evenly arranged between the plurality of filter plates, the plurality of arc-shaped racks extend to the top of the upper fixed disk, and the arc-shaped racks are meshed with the gear.

[0016] As a further solution of the present invention: an annular frame is fixedly connected to the top of the lower fixed cylinder, a rotating ring is rotatably connected to the top of the annular frame, a cleaning brush for cleaning the filter plate is fixedly connected to the top of the rotating ring, a sliding plate is fixedly connected to the bottom of the rotating ring, the sliding plate extends to the inside of the annular frame and is slidably connected to the annular frame, a pull rope is fixedly connected to the top of the lower baffle plate, the pull rope passes through the bottom of the annular frame and extends to the inside of the annular frame, and the pull rope sliding plate is fixedly connected, a fixed plate is fixedly connected to the inside of the annular frame, and an elastic elastic rope is fixedly connected between the fixed plate and the sliding plate.

[0017] As a further solution of the present invention: the spray part includes a spray delivery pipe, a second spray ring pipe is fixedly connected to the bottom of the spray delivery pipe, a plurality of spray heads are arranged on the outside of the second spray ring pipe, the spray delivery pipe is connected to an external pipeline for transporting liquid, and a drain pipe is fixedly connected to the bottom of the spray cylinder.

[0018] As a further solution of the present invention: the filtration module includes a conical hood fixedly connected to the inside of the treatment tower, a plurality of Venturi tube bundles are arranged on the top of the conical hood, the plurality of Venturi tube bundles all penetrate the conical hood and are fixedly connected to the conical hood, a first spray pipe is arranged at both ends of the conical hood, the two first spray pipes are connected to the absorption liquid pipeline arranged outside, a nozzle corresponding to the plurality of Venturi tube bundles is arranged on the outside of the first spray pipe, a collecting pipe is fixedly connected to the bottom of the conical hood, and the collecting pipe extends out of the outside of the treatment tower.

[0019] As a further solution of the present invention: the defogger module is fixedly connected to the mounting frame inside the treatment tower, a plurality of defogger flushing water pipelines are fixedly connected inside the mounting frame, and the mounting frame is provided with defogger flushing water pipelines for flushing the ridge-type defogger.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. The flue gas is treated in stages. After treatment, not only the droplet content of the flue gas is greatly reduced, the chimney rain problem is solved, but also the fine particles in the flue gas are effectively treated, and the dust concentration meets the technical requirements of ultra-low emissions.

[0022] 2. By starting the drive motor, the output shaft of the drive motor drives the rotating disk to rotate. When the rotating disk rotates, the unused filter plates move to the upper part of the spray part to continue filtering the flue gas, ensuring that the filtering effect of the flue gas after spraying is maintained in an optimal state.

[0023] 3. As the rotating disk rotates, the filter plate moves between the liquid to clean the filter plate. When the filter plate is completely moved between the upper fixed cylinder and the lower fixed cylinder, the traction piece releases the traction, and the upper pressure plate is pushed down by the telescopic rod and the outer spring. At this time, the liquid between the upper pressure plate and the lower baffle plate continuously passes through the filter plate, so that the filter plate is reversely flushed by the flow of liquid, and the lower baffle plate is squeezed by the liquid, so that the lower baffle plate is lowered and the liquid continuously passes through the filter plate for cleaning, thereby improving the cleaning effect of the filter plate.

[0024] 4. The rotation of the rotating ring drives the fixedly connected cleaning brush to rotate, so that the cleaning brush rotates and cleans the bottom of the filter plate, and cooperates with the liquid to clean the filter plate, thereby improving the cleaning effect of the filter plate, and as the lower baffle is completely dropped, the contact plate at the bottom of the sliding rod contacts the bottom of the upper fixed cylinder, thereby exposing the flow groove, so that the liquid flows out of the upper fixed cylinder through the flow groove, and as the flow of the liquid accelerates, the dust on the filter plate is further taken away. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0026] Figure 1 It is a schematic diagram of the overall structure of the device of the present invention;

[0027] Figure 2 It is a schematic diagram of the cross-sectional structure of the treatment tower of the present invention;

[0028] Figure 3 It is a schematic diagram of the cross-sectional structure of the spray tube of the present invention;

[0029] Figure 4 It is a schematic diagram of the structure of the rotating disk and the upper fixed disk of the present invention;

[0030] Figure 5 It is a schematic diagram of the structure of the rotating disk of the present invention;

[0031] Figure 6 It is a schematic diagram of the structure of the lower fixed plate of the present invention;

[0032] Figure 7 It is a schematic diagram of the cross-sectional structure of the upper fixing tube of the present invention;

[0033] Figure 8 It is a schematic diagram of the cross-sectional structure of the lower fixing tube of the present invention;

[0034] Fig. 9 It is a schematic diagram of the ring frame structure of the present invention;

[0035] Fig.10 It is a schematic diagram of a partial cross-sectional structure of the annular frame of the present invention;

[0036] Fig.11 The present invention Fig. 9 Schematic diagram of the enlarged structure of part A.

[0037] In the figure: 1, platform; 2, spray barrel; 201, smoke inlet pipe; 202, drain pipe; 3, treatment tower; 401, venturi tube bundle; 403, first spray pipe; 404, cone cover; 405, collection pipe; 501, mounting frame; 502, roof demister; 503, demister flushing water pipeline; 6, rotating disk; 600, filter plate; 601, upper fixed disk; 602, lower fixed disk; 603, drive motor; 604, arc rack; 605, smoke delivery pipe; 701, second spray ring pipe; 702, spray delivery pipe; 8, upper fixed barrel; 801, upper pressure plate; 802, telescopic rod; 804, spring; 805, water-absorbing bag; 806, electromagnet; 807, connecting pipe; 9, lower fixed cylinder; 900, magnetic plate; 901, lower baffle; 902, sliding rod; 9021, upper sealing plate; 9022, contact plate; 903, groove; 9031, flow slot; 904, annular frame; 905, cleaning brush; 906, rotating ring; 907, pull rope; 908, sliding plate; 909, elastic rope; 910, fixed plate; 100, rotating rod; 101, gear; 102, reel; 103, traction rope; 104, guide frame; 11, wet electrostatic precipitator module; 12, chimney. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0039] like Figures 1 to 11 As shown, a dust ultra-low emission control device for a wet flue gas desulfurization scrubber includes the following embodiments:

[0040] like Figures 1 to 3 As shown, embodiment 1 includes a platform 1, a spray barrel 2 and a treatment tower 3 are fixedly connected to the top of the platform 1, and also includes:

[0041] The bottom of the spray barrel 2 is fixedly connected to a smoke inlet pipe 201 for air intake, a rotating disk 6 is arranged inside the spray barrel 2, a plurality of filter plates 600 for filtering are arranged inside the rotating disk 6, an upper fixed disk 601 is arranged on the top of the rotating disk 6, a lower fixed disk 602 is arranged on the bottom of the rotating disk 6, an upper fixed barrel 8 is fixedly connected to the top of the upper fixed disk 601, a lower fixed barrel 9 is fixedly connected to the bottom of the lower fixed disk 602, the upper fixed barrel 8 and the lower fixed barrel 9 are arranged concentrically, a water absorbing member for sucking liquid is arranged inside the upper fixed barrel 8, a traction member is arranged on the top of the upper fixed disk 601, when the rotating disk 6 rotates, the water absorbing member is pulled by the traction member to absorb water, a closing member is arranged inside the lower fixed barrel 9, when one of the filter plates 600 rotates between the upper fixed barrel 8 and the lower fixed barrel 9, liquid is injected between the upper fixed barrel 8 and the lower fixed barrel 9 through the water absorbing member and the closing member, and the filter plate 600 is backwashed;

[0042] A spraying member is fixedly connected to the bottom of the lower fixed plate 602, and the spraying member is arranged below one of the filter plates 600, and a smoke conveying pipe 605 is fixedly connected to the top of the upper fixed plate 601, and the smoke conveying pipe 605, one of the filter plates 600 and the spraying member are kept in the same straight line, so that the smoke passes through the spraying member, the filter plate 600 and the smoke conveying pipe 605 in sequence and is conveyed to the inside of the treatment tower 3;

[0043] A filtration module and a demisting module are sequentially arranged inside the processing tower 3 , and a wet electrostatic precipitator module 11 is arranged on the top of the processing tower 3 .

[0044] In specific implementation, when the flue gas passes into the platform 1 through the smoke inlet pipe 201, when the flue gas needs to pass through the filter plate 600 set on the rotating disk 6, it needs to pass through the spray part set at the bottom of the lower fixed disk 602 in advance, and then pass through the filter plate 600 for desulfurization treatment. The absorption liquid sprayed in the spray part absorbs sulfur dioxide while removing coarse particles in the flue gas, and large particles are filtered through the filter plate 600, and the large particles are blocked on one side of the filter plate 600. The sprayed flue gas is transported to the inside of the treatment tower 3 through the smoke conveying pipe 605. At this time, the flue gas is purified by passing through the filter purification module and the demisting module in sequence, and finally discharged through the chimney 12;

[0045] In this scheme, the wet electrostatic precipitator module 11 is mainly composed of a wet electrostatic precipitator, which is connected to the platform 1 through an expansion joint, and is connected to the chimney 12 through an expansion joint. It can be selectively opened or closed according to the dust concentration of the exhaust gas reaching the standard, thereby reducing the energy consumption and operating costs of the system. The wet electrostatic precipitator module is a prior art, which uses high-voltage corona discharge to charge the dust. The charged dust moves to the dust collecting electrode and deposits under the action of the electric field force. The electric field force, the collision interception, adsorption and condensation of the charged water mist jointly capture the dust particles, which will not be further described here;

[0046] In summary, the flue gas is treated in stages, and after the treatment, not only the droplet content of the flue gas is greatly reduced and the chimney rain problem is solved, but also the fine particulate matter in the flue gas is effectively treated, and the dust concentration reaches the technical requirements of ultra-low emissions.

[0047] like Figures 4 to 5 As shown, embodiment 2: the upper fixed plate 601 is fixedly connected to the top of the inside of the spray barrel 2 through a support plate, a drive motor 603 is fixedly connected to the top of the upper fixed plate 601, the output shaft of the drive motor 603 passes through the upper fixed plate 601 and is fixedly connected to the rotating plate 6, and the lower fixed plate 602 is fixedly connected to the inner wall of the spray barrel 2.

[0048] During specific implementation, when the smoke passes through one of the filter plates 600, there will be a large amount of particulate matter on one side of the filter plate 600. After long-term use, the smoke will inevitably be unable to pass through smoothly. Therefore, by starting the drive motor 603, the output shaft of the drive motor 603 drives the rotating disk 6 to rotate. When the rotating disk 6 rotates, the unused filter plate 600 moves to the upper part of the spray part to continue filtering the smoke, thereby ensuring that the filtering effect of the smoke after spraying is maintained in an optimal state.

[0049] like Figures 6 to 8 As shown, in this embodiment, the water-absorbing component includes an upper pressure plate 801 arranged inside the upper fixed cylinder 8, a plurality of telescopic rods 802 are fixedly connected between the upper pressure plate 801 and the top of the upper fixed cylinder 8, springs 804 are sleeved on the outside of the plurality of telescopic rods 802, a foldable water-absorbing bag 805 is fixedly connected between the upper pressure plate 801 and the top of the upper fixed cylinder 8, a water outlet pipe is arranged at the bottom of the upper pressure plate 801, the water outlet pipe is connected to the water-absorbing bag 805, a connecting pipe 807 is fixedly connected to the top of the water-absorbing bag 805, the connecting pipe 807 extends to the bottom end of the interior of the spray cylinder 2, and an electromagnet 806 is fixedly connected to the top of the upper pressure plate 801.

[0050] like Fig. 9 and Fig.11 As shown, the closure member includes a lower baffle plate 901 slidably connected to the interior of the lower fixed cylinder 9, a plurality of grooves 903 are provided on the top of the lower baffle plate 901, a sliding rod 902 is provided inside each of the plurality of grooves 903, the sliding rod 902 passes through the lower baffle plate 901 and is slidably connected to the lower baffle plate 901, a circulation groove 9031 for circulating liquid is provided inside each of the grooves 903, an upper sealing plate 9021 is fixedly connected to the top of the sliding rod 902, and when the lower baffle plate 901 rises, the upper sealing plate 9021 closes the circulation groove 9031, and a contact plate 9022 is fixedly connected to the bottom of the sliding rod 902.

[0051] The closing member further includes a magnetic plate 900 , which is fixedly connected to the outer side of the lower baffle 901 . When the electromagnet 806 is energized, it is magnetically attracted to the lower baffle 901 , thereby driving the lower baffle 901 to rise.

[0052] In specific implementation, when the traction member pulls the upper pressure plate 801 inside the upper fixed cylinder 8 to rise, the electromagnet 806 on the top of the upper pressure plate 801 is started. When the electromagnet 806 is energized, the magnetic plate 900 on the lower baffle 901 rises. When the magnetic plate 900 rises, the sliding rod 902 falls under the influence of gravity, and then the upper sealing plate 9021 falls into the groove 903, so that the upper sealing plate 9021 closes the flow groove 9031 set on the lower baffle 901. When the upper pressure plate 801 rises, the upper pressure plate 801 squeezes the water absorption bag 805 fixedly connected to the top, and the liquid in the water absorption bag 805 flows into the upper pressure plate 801 and the lower baffle through the outlet pipe. 901, as the rotating disk 6 rotates, the filter plate 600 moves between the liquid, thereby cleaning the filter plate 600. When the filter plate 600 is completely moved between the upper fixed cylinder 8 and the lower fixed cylinder 9, the traction part releases the traction, and the telescopic rod 802 and the outer spring 804 push the upper pressure plate 801 down. At this time, the liquid between the upper pressure plate 801 and the lower baffle plate 901 continuously passes through the filter plate 600, so that the filter plate 600 is reversely flushed by the flow of liquid, and the lower baffle plate 901 is squeezed by the liquid, so that the lower baffle plate 901 is lowered and the liquid continuously passes through the filter plate 600 for cleaning, thereby improving the cleaning effect of the filter plate 600.

[0053] At this time, the water absorption bag 805 is stretched so that the water absorption bag 805 can absorb the liquid at the bottom end of the spray tube 2 through the connecting pipe 807 for reuse. In order to ensure the cleanliness of the liquid, a filter net can be set at one end of the connecting pipe 807 to prevent particles from flowing in. A one-way liquid inlet valve is set on the outside of the connecting pipe 807, and a one-way water outlet valve is set on the outside of the water outlet pipe, thereby ensuring that the water absorption bag 805 absorbs and discharges water normally.

[0054] like Figure 7 As shown, embodiment three: the traction member includes a rotating rod 100 rotatably connected to the top of the upper fixed disk 601, a gear 101 is fixedly connected to the outside of the rotating rod 100, a torsion spring is fixedly connected between the rotating rod 100 and the upper fixed disk 601, a winding disk 102 is fixedly connected to the top of the rotating rod 100, a traction rope 103 is wound and fixedly connected to the outside of the winding disk 102, one end of the traction rope 103 passes through the top of the upper fixed cylinder 8 and is fixedly connected to the upper pressure plate 801, a plurality of guide frames 104 for guiding the traction rope 103 are arranged on the outside of the upper fixed cylinder 8, an arc-shaped rack 604 corresponding to a plurality of filter plates 600 is fixedly connected to the top of the rotating disk 6, a plurality of arc-shaped racks 604 are respectively and evenly arranged between the plurality of filter plates 600, a plurality of arc-shaped racks 604 extend to the top of the upper fixed disk 601, and the arc-shaped racks 604 are meshed with the gear 101.

[0055] During specific implementation, when the driving motor 603 is started, the output shaft of the driving motor 603 drives the rotating disk 6 to rotate, and the rotating disk 6 drives the arc-shaped rack 604 fixedly connected on the top to rotate. When the arc-shaped rack 604 rotates, it meshes with the gear 101. When the gear 101 rotates, it drives the fixedly connected rotating rod 100, and the rotating rod 100 drives the fixedly connected winding disk 102 to rotate. The winding disk 102 drives the traction rope 103 wound on the outside to be wound, and the traction rope 103 is guided by the guide frame 104 to pull the upper pressure plate 801 up. When the filter plate 600 is switched to the bottom of the upper fixed cylinder 8, the gear 101 is disengaged from the arc-shaped rack 604, and the upper pressure plate 801 is pushed down by the action of the telescopic rod 802 and the spring 804 to clean the filter plate 600.

[0056] like Figures 9 and 10 As shown, in this embodiment: an annular frame 904 is fixedly connected to the top of the lower fixed cylinder 9, a rotating ring 906 is rotatably connected to the top of the annular frame 904, a cleaning brush 905 for cleaning the filter plate 600 is fixedly connected to the top of the rotating ring 906, a sliding plate 908 is fixedly connected to the bottom of the rotating ring 906, the sliding plate 908 extends to the inside of the annular frame 904 and is slidably connected to the annular frame 904, a pull rope 907 is fixedly connected to the top of the lower baffle 901, the pull rope 907 passes through the bottom of the annular frame 904 and extends to the inside of the annular frame 904, and the pull rope 907 is fixedly connected to the sliding plate 908, a fixed plate 910 is fixedly connected to the inside of the annular frame 904, and an elastic elastic rope 909 is fixedly connected between the fixed plate 910 and the sliding plate 908.

[0057] In specific implementation, when the upper pressure plate 801 descends, the magnetic force of the electromagnet 806 is controlled to make the lower baffle 901 slowly descend along with the liquid. When the lower baffle 901 descends, the sliding plate 908 inside the annular frame 904 is pulled by the pull rope 907, so that the sliding plate 908 drives the rotating ring 906 fixedly connected to the top to rotate. When the rotating ring 906 rotates, it drives the fixedly connected cleaning brush 905 to rotate, so that the cleaning brush 905 rotates and cleans the bottom of the filter plate 600, and cleans the filter plate 600 with the liquid, thereby improving the cleaning effect of the filter plate 600. After the lower baffle 901 is completely descended, the contact plate 9022 at the bottom of the sliding rod 902 contacts the bottom of the upper fixed cylinder 8, thereby exposing the circulation groove 9031, so that the liquid flows out of the upper fixed cylinder 8 through the circulation groove 9031. As the flow of the liquid accelerates, the dust on the filter plate 600 is further taken away.

[0058] like Figures 1 to 5As shown, embodiment 4: the spray part includes a spray delivery pipe 702, a second spray ring pipe 701 is fixedly connected to the bottom of the spray delivery pipe 702, a plurality of spray heads are arranged on the outside of the second spray ring pipe 701, the spray delivery pipe 702 is connected to an external pipeline for conveying liquid, and a drain pipe 202 is fixedly connected to the bottom of the spray cylinder 2.

[0059] The filtration module includes a conical hood 404 fixedly connected to the inside of the treatment tower 3, a plurality of venturi tube bundles 401 are arranged on the top of the conical hood 404, the plurality of venturi tube bundles 401 all penetrate the conical hood 404 and are fixedly connected to the conical hood 404, first spray pipes 403 are arranged at both ends of the conical hood 404, the two first spray pipes 403 are connected to the absorption liquid pipeline arranged outside, and nozzles corresponding to the plurality of venturi tube bundles 401 are arranged on the outside of the first spray pipe 403, and a collecting pipe 405 is fixedly connected to the bottom of the conical hood 404, and the collecting pipe 405 extends out of the outside of the treatment tower 3.

[0060] The defogger module is fixedly connected to the mounting frame 501 inside the treatment tower 3 , and a plurality of defogger flushing water pipelines 503 are fixedly connected inside the mounting frame 501 . The mounting frame 501 is provided with defogger flushing water pipelines 503 for flushing the ridge-type defogger 502 .

[0061] In specific implementation, the flue gas treated by the spraying element is transported to the filter module of the desulfurization and dust removal tower, which is composed of a plurality of venturi tube bundles 401. Each venturi tube bundle 401 treats a part of the flue gas. When the flue gas passes through the venturi tube bundle 401, the compression is accelerated and the expansion is decelerated, so that the fine particles and acid mist in the flue gas are gathered into large particles. The nozzle of the first spray pipe 403 directly opposite to the venturi tube bundle 401 is used to capture the dust and acid mist in the flue gas, and the sprayed liquid is circulated after external treatment through the collection pipe 405, and the conical cover 404 is used to collect the sprayed absorption liquid. At the same time, an overflow port is provided on the conical cover 404. When the liquid level is too high, the absorption liquid will overflow to the bottom through the overflow port.

[0062] The defogger module adopts a ridge-type defogger 502, which is fixed by a mounting frame 501 welded on the platform 1. The gas from upstream passes through the curved channel of the defogger. Under the action of inertia and gravity, the flue gas is quickly and continuously changed in direction. The mist droplets in the flue gas hit the ridge-type defogger 502 and are captured. The mist droplets gather to form a water flow, which falls into the slurry pool below under the action of gravity, realizing gas-liquid separation. The mounting frame 501 is flushed through the defogger flushing water pipeline 503 to keep the demisting module clean.

[0063] Meanwhile, the contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0064] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0065] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A dust ultra-low emission control device for a wet flue gas desulfurization scrubber, comprising a platform (1), a spray barrel (2) and a treatment tower (3) being fixedly connected to the top of the platform (1), characterized in that: Also includes: The bottom of the spray barrel (2) is fixedly connected to a smoke inlet pipe (201) for air intake; a rotating disk (6) is arranged inside the spray barrel (2); a plurality of filter plates (600) for filtering are arranged inside the rotating disk (6); an upper fixed disk (601) is arranged at the top of the rotating disk (6); a lower fixed disk (602) is arranged at the bottom of the rotating disk (6); an upper fixed barrel (8) is fixedly connected to the top of the upper fixed disk (601); a lower fixed barrel (9) is fixedly connected to the bottom of the lower fixed disk (602); the upper fixed barrel (8) The upper fixed cylinder (8) is arranged concentrically with the lower fixed cylinder (9), a water absorbing member for absorbing liquid is arranged inside the upper fixed cylinder (8), a traction member is arranged on the top of the upper fixed disk (601), and when the rotating disk (6) rotates, the water absorbing member is pulled by the traction member to absorb water, and a sealing member is arranged inside the lower fixed cylinder (9), and when one of the filter plates (600) rotates to between the upper fixed cylinder (8) and the lower fixed cylinder (9), liquid is injected into between the upper fixed cylinder (8) and the lower fixed cylinder (9) through the water absorbing member and the sealing member, so as to backwash the filter plate (600); The bottom of the lower fixed plate (602) is fixedly connected with a spray component, which is arranged below one of the filter plates (600), and the top of the upper fixed plate (601) is fixedly connected with a smoke conveying pipe (605), and the smoke conveying pipe (605), one of the filter plates (600) and the spray component are kept in a straight line, so that the smoke passes through the spray component, the filter plate (600) and the smoke conveying pipe (605) in sequence and is conveyed to the inside of the treatment tower (3); A filtration module and a demisting module are sequentially arranged inside the treatment tower (3), and a wet electrostatic precipitator module (11) is arranged on the top of the treatment tower (3); The water absorbing member comprises an upper pressing plate (801) arranged inside the upper fixed cylinder (8), a plurality of telescopic rods (802) are fixedly connected between the upper pressing plate (801) and the top of the interior of the upper fixed cylinder (8), springs (804) are sleeved on the outside of the plurality of telescopic rods (802), a foldable water absorbing bag (805) is fixedly connected between the upper pressing plate (801) and the top of the interior of the upper fixed cylinder (8), a water outlet pipe is arranged at the bottom of the upper pressing plate (801), the water outlet pipe is connected to the water absorbing bag (805), a connecting pipe (807) is fixedly connected to the top of the water absorbing bag (805), the connecting pipe (807) extends to the bottom of the interior of the spray cylinder (2), and an electromagnet (806) is fixedly connected to the top of the upper pressing plate (801); The sealing member comprises a lower baffle (901) slidably connected to the interior of the lower fixed cylinder (9); a plurality of grooves (903) are provided on the top of the lower baffle (901); a sliding rod (902) is provided inside each of the plurality of grooves (903); the sliding rod (902) passes through the lower baffle (901) and is slidably connected to the lower baffle (901); a circulation groove (9031) for circulating liquid is provided inside each of the grooves (903); an upper sealing plate (9021) is fixedly connected to the top of the sliding rod (902); when the lower baffle (901) rises, the upper sealing plate (9021) closes the circulation groove (9031); and a contact plate (9022) is fixedly connected to the bottom of the sliding rod (902); The closure member further comprises a magnetic plate (900), which is fixedly connected to the outer side of the lower baffle (901). When the electromagnet (806) is energized, the magnetic plate (900) is magnetically attracted to the lower baffle (901), thereby driving the lower baffle (901) to rise.

2. The ultra-low dust emission control device for a wet flue gas desulfurization scrubber according to claim 1 is characterized in that: The upper fixed disk (601) is fixedly connected to the top of the spray barrel (2) via a support plate; a driving motor (603) is fixedly connected to the top of the upper fixed disk (601); an output shaft of the driving motor (603) passes through the upper fixed disk (601) and is fixedly connected to the rotating disk (6); and the lower fixed disk (602) is fixedly connected to the inner wall of the spray barrel (2).

3. The ultra-low dust emission control device for a wet flue gas desulfurization scrubber according to claim 1 is characterized in that: The traction member comprises a rotating rod (100) rotatably connected to the top of the upper fixed disk (601), a gear (101) is fixedly connected to the outer side of the rotating rod (100), a torsion spring is fixedly connected between the rotating rod (100) and the upper fixed disk (601), a winding disk (102) is fixedly connected to the top of the rotating rod (100), a traction rope (103) is wound and fixedly connected to the outer side of the winding disk (102), one end of the traction rope (103) passes through the top of the upper fixed cylinder (8) and is connected to the upper pressure plate (8). 01), a plurality of guide frames (104) for guiding the traction rope (103) are arranged on the outer side of the upper fixed cylinder (8), an arc-shaped rack (604) corresponding to the plurality of filter plates (600) is fixedly connected to the top of the rotating disk (6), the plurality of arc-shaped racks (604) are respectively and evenly arranged between the plurality of filter plates (600), the plurality of arc-shaped racks (604) extend to the top of the upper fixed disk (601), and the arc-shaped racks (604) are meshed with the gear (101).

4. The ultra-low dust emission control device for a wet flue gas desulfurization scrubber according to claim 1 is characterized in that: The top of the lower fixed cylinder (9) is fixedly connected to an annular frame (904), the top of the annular frame (904) is rotatably connected to a rotating ring (906), the top of the rotating ring (906) is fixedly connected to a cleaning brush (905) for cleaning the filter plate (600), the bottom of the rotating ring (906) is fixedly connected to a sliding plate (908), the sliding plate (908) extends to the inside of the annular frame (904) and is slidably connected to the annular frame (904), the top of the lower baffle (901) is fixedly connected to a pull rope (907), the pull rope (907) passes through the bottom of the annular frame (904) and extends to the inside of the annular frame (904), and the pull rope (907) is fixedly connected to the sliding plate (908), the inside of the annular frame (904) is fixedly connected to a fixed plate (910), and an elastic elastic rope (909) is fixedly connected between the fixed plate (910) and the sliding plate (908).

5. The ultra-low dust emission control device for a wet flue gas desulfurization scrubber according to claim 1 is characterized in that: The spraying member comprises a spraying delivery pipe (702), the bottom of the spraying delivery pipe (702) is fixedly connected to a second spraying ring pipe (701), a plurality of spraying heads are arranged outside the second spraying ring pipe (701), the spraying delivery pipe (702) is connected to an external pipeline for conveying liquid, and the bottom of the spray cylinder (2) is fixedly connected to a liquid discharge pipe (202).

6. The ultra-low dust emission control device for a wet flue gas desulfurization scrubber according to claim 1 is characterized in that: The filtration module comprises a conical cover (404) fixedly connected to the inside of the treatment tower (3); a plurality of venturi tube bundles (401) are arranged on the top of the conical cover (404); the plurality of venturi tube bundles (401) all penetrate the conical cover (404) and are fixedly connected to the conical cover (404); first spray pipes (403) are arranged at both ends of the conical cover (404); the two first spray pipes (403) are connected to an externally arranged absorption liquid pipeline; nozzles corresponding to the plurality of venturi tube bundles (401) are arranged on the outside of the first spray pipes (403); a collecting pipe (405) is fixedly connected to the bottom of the conical cover (404); and the collecting pipe (405) extends out of the outside of the treatment tower (3).

7. The ultra-low dust emission control device for a wet flue gas desulfurization scrubber according to claim 1 is characterized in that: The demisting module is fixedly connected to a mounting frame (501) inside the treatment tower (3), a plurality of demisting device flushing water pipelines (503) are fixedly connected inside the mounting frame (501), and a demisting device flushing water pipeline (503) for flushing a ridge-type demisting device (502) is arranged inside the mounting frame (501).

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