Desulfurization and dust removal device

Abstract

The utility model discloses a desulfurization and dust removal device which solves the technical problem that flue gas discharged by the existing desulfurization and dust removal device pollutes the environment. By arranging the flue gas spraying assembly and the slurry treatment box, slurry is heated and enters waste gas through the atomization nozzle, sulfur and impurities in sulfur dioxide waste gas are removed, during atomization spraying, waste gas attachments on the inner wall of the treatment barrel can be cleaned or thermally emulsified, and meanwhile, when the treated waste gas is discharged, the waste gas can be recycled. The waste gas is detected, if the waste gas is unqualified, the waste gas is recovered, and desulfurization and dust removal treatment is continued, by arranging a waste liquid treatment assembly, sulfur in waste liquid generated by flue gas treatment is removed, whether the treated liquid is qualified or not is detected through a waste liquid detector, and if the treated liquid is unqualified, the treated liquid is collected in a circulating liquid storage box; the waste liquid spraying assembly is used for continuously performing desulfurization treatment on the waste liquid, and the waste liquid is directly discharged after being detected to be qualified, so that sufficient desulfurization of the flue gas and the waste liquid is realized, and environmental pollution is avoided.

Description

Technical Field

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

[0002] Flue gas desulfurization technologies include wet desulfurization and dry desulfurization, among which wet desulfurization technology is the most widely used. Traditional wet desulfurization and dust removal devices generally use wet flue gas desulfurization absorption towers. The principle of wet flue gas desulfurization absorption towers is to use desulfurization slurry to spray from top to bottom, and the flue gas flows from bottom to top. The desulfurization slurry absorbs sulfur dioxide in the flue gas during the dripping process, and generates gypsum and other by-products to achieve the purpose of desulfurization. However, due to the high flow rate of flue gas in the desulfurization absorption tower and the large gas flow rate, in traditional wet desulfurization and dust removal devices, a single cycle method is used for desulfurization and dust removal, and the flue gas is not in sufficient contact with the desulfurization slurry, resulting in poor desulfurization effect.

[0003] Therefore, the Chinese utility model patent with the authorization announcement date of 2023.08.18 and the authorization announcement number of CN 219539928 U discloses a dual-circulation desulfurization and dust removal device, including a No. 1 desulfurization tower, a No. 1 tower external circulation box is arranged next to the No. 1 desulfurization tower, and the No. 1 desulfurization tower and the No. 1 tower external circulation box are connected through the No. 1 slurry channel and the overflow channel respectively. The interior of the No. 1 desulfurization tower is provided with a filter dust collector, a No. 2 fan, a No. 2 spray head, a No. 1 fan, a No. 1 spray head, and a slurry pool in the tower from top to bottom; the side wall of the slurry pool in the tower is provided with a No. 1 mixer and a No. 2 slurry channel, the No. 2 slurry channel is connected to the No. 1 spray head, and a No. 1 circulation pump is arranged on the No. 2 slurry channel. The above technical scheme sets up two circulation channels to spray desulfurization of flue gas twice, so that the flue gas and the desulfurization slurry are in more sufficient contact, which significantly improves the desulfurization effect. However, if only the spraying method is used, there will still be the problem of insufficient contact between gas and liquid. A certain amount of sulfide may still exist after two contacts. Direct discharge without detection will cause environmental pollution. Moreover, the above-mentioned slurries are all room temperature slurries. The reaction rate of room temperature slurries with sulfur dioxide is slow, which affects the desulfurization effect. After the spraying is completed, the flue gas and desulfurization slurry will react to form waste attachments on the inner wall of the No. 1 desulfurization tower, which will not only affect the life of the No. 1 desulfurization tower, but may also clog the No. 1 spray head and No. 2 spray head. Utility Model Content

[0004] In view of the deficiencies in the above-mentioned background technology, the utility model proposes a desulfurization and dust removal device, which solves the technical problem that the flue gas discharged by the existing desulfurization and dust removal device pollutes the environment.

[0005] The technical solution of this application is:

[0006] A desulfurization and dust removal device comprises a treatment tube connected with an exhaust pipe, an intake pipe, and an exhaust pipe from top to bottom in sequence, the treatment tube is connected with a flue gas spray assembly, a first shunt pipe is connected between the exhaust pipe and the intake pipe, the exhaust pipe is connected with a flue gas detector, and a first control valve is connected to the exhaust pipe behind the first shunt pipe. After the flue gas enters the treatment tube from the intake pipe, it contacts with the desulfurization slurry sprayed from the flue gas spray assembly during the rising process to achieve primary desulfurization, and then the flue gas is discharged from the exhaust pipe and tested by the flue gas detector to see whether it meets the emission standard. The first control valve controls the on-off of the exhaust pipe and the first shunt pipe, and the unqualified flue gas flows through the first shunt pipe and the intake pipe back to the treatment tube for further desulfurization, and the qualified flue gas is directly discharged from the exhaust pipe. Moreover, when the desulfurization slurry is atomized and sprayed, the waste gas attachments on the inner wall of the treatment tube are cleaned and emulsified.

[0007] Preferably, the flue gas spray assembly includes a delivery pipe connected to the slurry treatment box at one end, and a plurality of atomizing nozzles plugged into the treatment cylinder are connected to the other end of the delivery pipe. The slurry is atomized and sprayed through the plurality of atomizing nozzles to fully contact with the rising flue gas, thereby improving the desulfurization effect.

[0008] Preferably, the delivery pipe is provided with more than two shunt pipes equiangularly distributed along the treatment tube, and the atomizing nozzles are evenly spaced on the shunt pipes. At least two opposing shunt pipes are provided on the treatment tube, so that the atomized slurry can be sprayed everywhere in the treatment tube, increasing the contact area between the slurry and the flue gas and improving the desulfurization effect.

[0009] Preferably, a mixing blade is rotatably connected in the slurry treatment box, and a heating tube is arranged in the mixing blade. The slurry is first stirred and heated in the slurry treatment box to make the slurry more uniform and improve the atomization effect when entering the treatment cylinder.

[0010] Preferably, a waste liquid treatment assembly is connected to the bottom of the treatment barrel, and the waste liquid treatment assembly includes a waste liquid spray assembly connected to the treatment barrel, a stirring assembly rotatably connected in the treatment barrel, and the waste liquid spray assembly and the discharge pipe are both connected to the circulating liquid storage tank. After the slurry reacts with the flue gas, waste liquid is formed at the bottom of the treatment barrel, and the stirring assembly stirs and mixes the waste liquid. Since the waste liquid does not completely react with the sulfur dioxide in the flue gas, the incompletely reacted waste liquid is used as the circulating liquid, which is diverted through the discharge pipe and stored in the circulating liquid storage tank. The circulating liquid then returns to the treatment barrel through the waste liquid spray assembly, and the waste liquid at the bottom of the treatment barrel is desulfurized for the second time.

[0011] Preferably, the waste liquid treatment component includes a waste liquid circulation pipeline, the waste liquid circulation pipeline includes a second shunt pipe connected to the circulating liquid storage tank at one end, the second shunt pipe is intermittently connected to the discharge pipe through the second control valve, and a waste liquid detector is also connected between the discharge pipe and the second control valve. The waste liquid detector and the second control valve cooperate to control the flow direction of the waste liquid. If the waste liquid fails the test, the circulating liquid flows into the circulating liquid storage tank through the discharge pipe and the second shunt pipe. If the waste liquid passes the test, it is directly discharged from the discharge pipe.

[0012] Preferably, the waste liquid spray assembly includes an input pipe connected to the circulating liquid storage tank at one end, and the other end of the input pipe is connected to a plurality of output nozzles plugged into the treatment barrel. Specifically, a delivery pump can be added to the front of the input pipe, and the circulating liquid is re-sprayed into the treatment barrel through the input pipe, the delivery pump and the plurality of output nozzles.

[0013] Preferably, the other end of the input pipe is provided with a plurality of branch pipes equiangularly distributed along the treatment tube, and the output nozzles are evenly spaced on the branch pipes. At least two opposite branch pipes are provided on the treatment tube, so that the circulating liquid is sprayed at various places in the treatment tube through the output nozzles, increasing the contact area between the circulating liquid and the flue gas and waste liquid, and improving the desulfurization effect.

[0014] Preferably, the stirring assembly includes a second adjusting rod coaxial with the treatment barrel, the second adjusting rod is provided with a treatment blade, and the treatment blade is provided with a cleaning scraper. The second adjusting rod rotates around the central axis to drive the treatment blade to stir the waste liquid, while the cleaning scraper cleans the inner wall of the treatment barrel.

[0015] Preferably, a plurality of filter screens are provided at the top of the treatment cylinder, and the particles in the flue gas are removed by using the multi-layer filter screens.

[0016] Compared with the prior art, the technical solution disclosed in the utility model has the following beneficial effects:

[0017] 1. By setting up a flue gas spray assembly and a slurry treatment box, the slurry is heated and sprayed into the exhaust gas through an atomizing nozzle to remove sulfur and impurities in the sulfur dioxide exhaust gas. During the atomizing spraying, the exhaust gas attachments on the inner wall of the treatment tube can also be cleaned or emulsified. At the same time, the treated exhaust gas is tested when it is discharged. If the test fails, the exhaust gas can be recovered for further desulfurization and dust removal until it passes the test and is directly discharged.

[0018] 2. By setting up a waste liquid treatment component, the sulfur in the waste liquid generated by the flue gas treatment is removed, and the treated liquid is tested by a waste liquid detector to see if it is qualified. If it is unqualified, it is collected in a circulating liquid storage tank, and the waste liquid is further desulfurized using a waste liquid spray component until it is directly discharged after passing the test.

[0019] 3. By setting a stirring assembly at the bottom of the treatment tube, the second adjusting rod rotates to drive the treatment blade to rotate, so as to achieve stirring of the waste liquid at the bottom of the treatment tube. The treatment blade rotates to drive the cleaning scraper to rotate, so as to achieve all-round cleaning of the inner wall of the treatment tube and keep the inner wall of the treatment tube clean to avoid affecting the life of the treatment tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a front view of the desulfurization and dust removal device of the utility model;

[0022] Figure 2 It is a rear view of the desulfurization and dust removal device of the utility model;

[0023] Figure 3 It is a cross-sectional view of the desulfurization and dust removal device of the utility model;

[0024] Figure 4 It is a schematic diagram of the connection structure of the smoke spray assembly and the slurry treatment box of the utility model;

[0025] Figure 5 yes Figure 4 A partial enlarged view of the slurry treatment box;

[0026] Figure 6 It is a structural schematic diagram of the smoke circulation pipeline of the utility model;

[0027] Figure 7 yes Figure 3 A schematic diagram of the structure of the stirring component of the waste liquid treatment component;

[0028] Figure 8 yes Figure 3 A schematic diagram of the structure of the waste liquid spraying component of the waste liquid treatment component;

[0029] Fig. 9 yes Figure 1 Schematic diagram of the structure of the waste liquid circulation pipeline of the waste liquid treatment component.

[0030] Description of Figure Numbers:

[0031] 1. Treatment cylinder; 2. Exhaust pipe; 3. Exhaust pipe; 4. Inlet pipe; 5. Smoke spray assembly; 501. Slurry treatment box; 502. First motor; 503. Rotating rod; 504. Mixing blade; 505. Heating pipe; 506. First delivery pipe; 507. First delivery pump; 508. Delivery pipe; 509. Atomizing nozzle; 510. Smoke detector; 511. Collection pipe; 512. First shunt pipe; 513. Delivery fan; 6. Waste liquid treatment assembly; 601. First Second motor; 602, first adjusting rod; 603, first adjusting gear; 604, second adjusting gear; 605, second adjusting rod; 606, processing blade; 607, input pipe; 608, second delivery pump; 609, circulating liquid storage tank; 610, output nozzle; 611, waste liquid detector; 612, detection head; 613, second diversion pipe; 7, feed pipe; 8, water inlet pipe; 9, first control valve; 10, filter screen; 11, second control valve; 12, cleaning scraper. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the core concept of the utility model and the following embodiments, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0033] Embodiment 1, a desulfurization and dust removal device, comprising a treatment tube 1 connected with an exhaust pipe 2, an intake pipe 4, and an exhaust pipe 3 from top to bottom in sequence, the treatment tube 1 is connected with a flue gas spray assembly 5, a first shunt pipe 512 is connected between the exhaust pipe 2 and the intake pipe 4, the exhaust pipe 2 is connected with a flue gas detector 510, and a first control valve 9 is connected to the exhaust pipe 2 behind the first shunt pipe 512. After the flue gas enters the treatment tube 1 from the intake pipe 4, it contacts with the desulfurization slurry sprayed from the flue gas spray assembly 5 during the rising process to achieve primary desulfurization, and then the flue gas is discharged from the exhaust pipe 2 and tested by the flue gas detector 510 to see whether it meets the emission standard, the first control valve 9 controls the on-off of the exhaust pipe 2 and the first shunt pipe 512, and the unqualified flue gas flows through the first shunt pipe 512 and the intake pipe 4 back to the treatment tube 1 for further desulfurization, and the qualified flue gas is directly discharged from the exhaust pipe 2. Moreover, when the desulfurization slurry is atomized and sprayed, the waste gas attachments on the inner wall of the treatment tube 1 are cleaned and emulsified.

[0034] A preferred implementation is as follows: Figure 1 to Figure 2 , Figure 6As shown, the first control valve 9 is arranged at the connection point between the exhaust pipe 2 and the first diversion pipe 512, and the smoke detector 510 is arranged before the first control valve 9. The smoke detector 510 is arranged on the exhaust pipe 2 through a mounting frame, and one end of the smoke detector 510 is connected to a collection pipe 511, and one end of the collection pipe 511 is connected to the exhaust pipe 2. When the smoke detector 510 detects that the flue gas does not meet the emission standards, the first control valve 9 connects the exhaust pipe 2 and the first diversion pipe 512, and the flue gas returns to the treatment tube 1 to continue desulfurization until the smoke detector 510 detects that the flue gas meets the emission standards.

[0035] Specifically, the rear of the first shunt pipe 512 refers to the end where the smoke first flows into the first shunt pipe 512 through the intake pipe 4. By setting the first control valve 9, the first shunt pipe 512 and the exhaust pipe 2 are sealed, and the smoke can only flow through the first shunt pipe 512 and then enter the treatment tube 1. The detection principle of the smoke detector 510 is consistent with that of the composite gas detector model MS600. In order to make the smoke flow smoother, a conveying fan 513 can be set at the connection between the treatment tube 1 and the exhaust pipe 2.

[0036] Example 2, based on Example 1, a desulfurization and dust removal device, such as Figure 4 As shown, the flue gas spray assembly 5 includes a delivery pipe 508 connected to the slurry treatment box 501 at one end, and the other end of the delivery pipe 508 is connected to a plurality of atomizing nozzles 509 plugged into the treatment barrel 1. Preferably, the flue gas spray assembly 5 includes a slurry treatment box 501, one side of the slurry treatment box 501 is connected to a first delivery pipe 506, one end of the first delivery pipe 506 is connected to a first delivery pump 507, the output end of the first delivery pump 507 is connected to the delivery pipe 508, and the delivery pipe 508 is connected to a plurality of atomizing nozzles 509, the atomizing nozzles 509 are plugged into the side wall of the treatment barrel 1, and the nozzles of the atomizing nozzles 509 penetrate into the treatment barrel 1 to atomize the slurry and spray it on the rising flue gas, so that the slurry is fully in contact with the rising flue gas, thereby improving the desulfurization effect.

[0037] Specifically, when the flue gas is treated, the input flue gas is transported to the treatment tube 1 through the air inlet pipe 4, and then the first delivery pump 507 is started through the external controller, and then the slurry is transported to the second delivery pipe 508 through the first delivery pipe 506, and then the slurry is atomized and sprayed into the treatment tube 1 through the atomizing nozzle 509, and chemically reacts with the sulfur dioxide in the flue gas, thereby achieving desulfurization. The delivery fan 513 is turned on by the external controller, and then the desulfurized flue gas is discharged. During the discharge process, the flue gas detector 510 and the collection tube 511 are coordinated with each other by the external controller to detect the sulfur content of the treated flue gas. If the detection is unqualified, the first control valve 9 is connected to the first shunt pipe 512 by the external controller, and the first shunt pipe 512 re-flows the flue gas through the air inlet pipe 4 and transports it to the treatment tube 1, and the flue gas is repeatedly desulfurized.

[0038] Example 3, based on Example 2, a desulfurization and dust removal device, such as Figure 4 As shown, the delivery pipe 508 is provided with more than two shunt pipes equiangularly distributed along the treatment tube 1, and the atomizing nozzles 509 are evenly spaced and arranged on the shunt pipes. At least two opposing shunt pipes are arranged on the treatment tube 1, so that the atomized slurry can be sprayed at various places in the treatment tube 1, increasing the contact area between the slurry and the flue gas and improving the desulfurization effect.

[0039] Example 4, based on Example 2, a desulfurization and dust removal device, such as Figures 4 to 5 As shown, a mixing blade 504 is rotatably connected in the slurry treatment box 501, and a heating pipe 505 is arranged in the mixing blade 504. The slurry is first stirred and heated in the slurry treatment box 501 to make the slurry more uniform and improve the atomization effect when entering the treatment cylinder 1. When making the slurry, the first motor 502 and the heating pipe 505 are started by the external controller, and then the limestone treatment agent and the solution are transported to the slurry treatment box 501 through the feed pipe 7 and the water inlet pipe 8, and then the rotating rod 503 cooperates with the mixing blade 504 to stir and mix them into slurry.

[0040] Example 5, based on Example 1, a desulfurization and dust removal device, such as Figure 3 , Figures 7 and 8 As shown, the bottom of the treatment barrel 1 is connected with a waste liquid treatment component 6, which includes a waste liquid spray component connected to the treatment barrel 1, a stirring component rotatably connected in the treatment barrel 1, and the waste liquid spray component and the discharge pipe 3 are both connected to the circulating liquid storage tank 609. After the slurry reacts with the flue gas, waste liquid is formed at the bottom of the treatment barrel 1, and the stirring component stirs and mixes the waste liquid. Since the waste liquid has not completely reacted with the sulfur dioxide in the flue gas, the incompletely reacted waste liquid is used as the circulating liquid, which is diverted and stored in the circulating liquid storage tank 609 through the discharge pipe 3, and the circulating liquid is then returned to the treatment barrel 1 through the waste liquid spray component, and the waste liquid at the bottom of the treatment barrel 1 is desulfurized for the second time.

[0041] Example 6, based on Example 5, a desulfurization and dust removal device, such as Fig. 9 As shown, the waste liquid treatment component 6 includes a waste liquid circulation pipeline, and the waste liquid circulation pipeline includes a second shunt pipe 613 connected to the circulating liquid storage tank 609 at one end, and the second shunt pipe 613 is intermittently connected to the discharge pipe 3 through the second control valve 11, and a waste liquid detector 611 is also connected between the discharge pipe 3 and the second control valve 11. The waste liquid detector 611 and the second control valve 11 cooperate to control the flow direction of the waste liquid. If the waste liquid fails the detection, the circulating liquid flows into the circulating liquid storage tank 609 through the discharge pipe 3 and the second shunt pipe 613. If the waste liquid passes the detection, it is directly discharged from the discharge pipe 3.

[0042] Specifically, the detection principle of the waste liquid detector 611 is consistent with the principle of the JXBS-3001-LZJ water quality analyzer. The waste liquid detector 611 is connected to the treatment cylinder 1 through the mounting frame 3. One end of the waste liquid detector 611 is connected to a detection head 612, which is inserted into the discharge pipe 3. The discharge pipe 3 is connected to a second shunt pipe 613. A second control valve 11 is provided at the connection between the second shunt pipe 613 and the discharge pipe 3. The outlet of the second shunt pipe 613 is connected to the circulating liquid storage tank 609.

[0043] Example 7, based on Example 5, a desulfurization and dust removal device, such as Figure 3 , Figure 8 As shown, the waste liquid spray assembly includes an input pipe 607 connected to a circulating liquid storage tank 609 at one end, and the other end of the input pipe 607 is connected to a plurality of output nozzles 610 plugged into the treatment barrel 1. Specifically, a delivery pump can be added to the front of the input pipe 607, and the circulating liquid is re-sprayed into the treatment barrel 1 through the input pipe 607, the delivery pump and the plurality of output nozzles 610.

[0044] Specifically, an input pipe 607 is symmetrically arranged on the outside of the treatment cylinder 1, a second delivery pump 608 is arranged at one end of the input pipe 607, the input end of the second delivery pump 608 is connected to the circulating liquid storage tank 609, an output nozzle 610 is arranged on the input pipe 607, one end of the output nozzle 610 penetrates into the treatment cylinder 1 from the outside of the treatment cylinder 1 to spray the circulating liquid into the treatment cylinder 1 again.

[0045] Example 8, based on Example 7, a desulfurization and dust removal device, such as Figure 3 , Figure 8 As shown, the other end of the input pipe 607 is provided with a plurality of branch pipes equiangularly distributed along the treatment tube 1, and the output nozzles 610 are evenly spaced and arranged on the branch pipes. At least two opposite branch pipes are arranged on the treatment tube 1, so that the circulating liquid is sprayed at various places in the treatment tube 1 through the output nozzles 610, thereby increasing the contact area between the circulating liquid and the flue gas and waste liquid, and improving the desulfurization effect.

[0046] Example 9, based on Example 5, a desulfurization and dust removal device, such as Figure 3 , Figure 7 As shown, the stirring assembly includes a second adjusting rod 605 coaxial with the treatment barrel 1, a treatment blade 606 is provided on the second adjusting rod 605, and a cleaning scraper 12 is provided on the treatment blade 606. A gap is left between the treatment blade 606 and the inner wall of the treatment barrel 1, and the stirring diameter matches the inner wall diameter of the treatment barrel 1. The second adjusting rod 605 rotates around the central axis to drive the treatment blade 606 to stir the waste liquid, and the cleaning scraper 12 cleans the inner wall of the treatment barrel 1.

[0047] Specifically, the stirring assembly includes a second motor 601, which is connected to the processing cylinder 1 through a mounting frame 2. The output shaft of the second motor 601 is connected to a first adjusting rod 602 through a coupling. One end of the first adjusting rod 602 is inserted into the interior of the processing cylinder 1. A first adjusting gear 603 is provided at one end of the first adjusting rod 602 located inside the processing cylinder 1. A second adjusting gear 604 is meshed and connected to the first adjusting gear 603. A second adjusting rod 605 is provided on the second adjusting gear 604. The second adjusting rod 605 is provided inside the processing cylinder 1 through a fixing plate. A processing blade 606 is provided on the second adjusting rod 605, and a cleaning scraper 12 is provided on the processing blade 606.

[0048] When the generated waste liquid is desulfurized, the second motor 601 is started through an external controller, and then the output shaft of the second motor 601 drives the first adjusting rod 602 and the first adjusting gear 603 to rotate, and then the first adjusting gear 603 and the second adjusting gear 604 engage with each other to drive the processing blade 606 to stir. During the stirring process of the waste liquid, the second delivery pump 608 is started through an external controller, and then the circulating liquid in the circulating liquid storage tank 609 is delivered to the input pipe 607, and then the circulating liquid is sprayed and mixed into the stirred waste liquid through the output nozzle 610 to desulfurize the waste liquid.

[0049] After the sulfur in the waste liquid is removed, the third control valve on the discharge pipe 3 is opened by an external controller, and then the treated waste liquid is transported through the discharge pipe 3. During the transportation process, the waste liquid detector 611 is turned on by the external controller, and then the waste liquid detector 611 and the detection head 612 cooperate with each other to re-detect the sulfur content in the treated waste liquid. If the test fails, the second control valve 11 on the second diversion pipe 613 is opened by the external controller, and the waste liquid is transported to the circulating liquid storage tank 609, and then sprayed into the treatment cylinder 1 again through the waste liquid spraying assembly, and the waste liquid is desulfurized again.

[0050] Embodiment 10, based on any one of Embodiments 1-9, a desulfurization and dust removal device, such as Figure 3 As shown, a plurality of filters 10 are provided at the top of the treatment cylinder 1. The multi-layer filters 10 are used to remove dust from the particulate matter in the flue gas. The filter 10 has at least two layers and is arranged above the flue gas spray assembly 5. During the flue gas discharge process, the filter 10 is used to separate gas and liquid, and the gas is discharged through the exhaust pipe 2, while the liquid and solid particulate matter remain in the treatment cylinder 1.

[0051] The parts not described in detail in the present invention are all conventional technical means known to those skilled in the art.

[0052] The above content shows and describes the basic principle, main features and beneficial effects of the utility model. The above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A desulfurization and dust removal device, characterized in that: The invention comprises a treatment tube (1) connected to an exhaust pipe (2), an intake pipe (4), and an exhaust pipe (3) in sequence from top to bottom, the treatment tube (1) being connected to a smoke spray assembly (5), a first shunt pipe (512) being connected between the exhaust pipe (2) and the intake pipe (4), a smoke detector (510) being connected to the exhaust pipe (2), and a first control valve (9) being connected to the exhaust pipe (2) behind the first shunt pipe (512).

2. The desulfurization and dust removal device according to claim 1 is characterized in that: The fume spray assembly (5) comprises a delivery pipe (508) having one end connected to the slurry treatment box (501), and the other end of the delivery pipe (508) is connected to a plurality of atomizing nozzles (509) plugged into the treatment cylinder (1).

3. The desulfurization and dust removal device according to claim 2 is characterized in that: The delivery pipe (508) is provided with more than two branch pipes distributed at equal angles along the treatment tube (1), and the atomizing nozzles (509) are evenly spaced and arranged on the branch pipes.

4. The desulfurization and dust removal device according to claim 2 is characterized in that: A mixing blade (504) is rotatably connected inside the slurry processing box (501), and a heating pipe (505) is provided inside the mixing blade (504).

5. The desulfurization and dust removal device according to claim 1 is characterized in that: A waste liquid treatment component (6) is connected to the bottom of the treatment barrel (1), and the waste liquid treatment component (6) comprises a waste liquid spray component connected to the treatment barrel (1), and a stirring component rotatably connected inside the treatment barrel (1), and the waste liquid spray component and the discharge pipe (3) are both connected to the circulating liquid storage tank (609).

6. The desulfurization and dust removal device according to claim 5 is characterized in that: The waste liquid treatment assembly (6) comprises a waste liquid circulation pipeline, the waste liquid circulation pipeline comprising a second shunt pipe (613) having one end connected to a circulating liquid storage tank (609), the second shunt pipe (613) being intermittently connected to a discharge pipe (3) via a second control valve (11), and a waste liquid detector (611) being further connected between the discharge pipe (3) and the second control valve (11).

7. The desulfurization and dust removal device according to claim 5, characterized in that: The waste liquid spraying assembly comprises an input pipe (607) having one end connected to a circulating liquid storage tank (609), and the other end of the input pipe (607) is connected to a plurality of output nozzles (610) plugged into the treatment cylinder (1).

8. The desulfurization and dust removal device according to claim 7 is characterized in that: The other end of the input pipe (607) is provided with a plurality of branch pipes distributed at equal angles along the processing cylinder (1), and the output nozzles (610) are evenly spaced and arranged on the branch pipes.

9. The desulfurization and dust removal device according to claim 5, characterized in that: The stirring assembly comprises a second adjusting rod (605) coaxial with the processing cylinder (1), the second adjusting rod (605) being provided with a processing blade (606), and the processing blade (606) being provided with a cleaning scraper (12).

10. The desulfurization and dust removal device according to any one of claims 1 to 9, characterized in that: A plurality of filter screens (10) are provided at the top of the processing cylinder (1).

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