A flue gas desulfurization and denitrification tower for thermal power plants

Abstract

The present invention discloses a flue gas desulfurization and denitrification tower for a thermal power plant, belonging to the field of flue gas purification technology, comprising a flue gas purification tower, wherein a flue gas pretreatment component is arranged inside the flue gas purification tower, wherein the flue gas pretreatment component comprises a guide vane and a flue gas inlet pipe, wherein the flue gas inlet pipe is externally connected to the flue gas purification tower along the tangential direction of the guide vane, and the flue gas from the thermal power plant flows toward the guide vane through the flue gas inlet pipe. In the present invention, the rotating fan blades can not only play a role in bypassing and enhancing the mixing effect of the desulfurization and denitrification liquid and the long electric heating flue gas, but also can induce the flue gas from the thermal power plant to flow upward, thereby preventing the flue gas from adhering to the wall when passing through the flue gas desulfurization and denitrification component, thereby affecting the desulfurization and denitrification effect of the flue gas. A plug-in structure is provided between the first pull-out box and the first drawer, and a plug-in structure is provided between the second pull-out box and the second drawer, thereby facilitating the removal and replacement of the particle purification component and the flue gas desulfurization and denitrification component.

Description

Technical Field

[0001] The invention belongs to the technical field of flue gas purification, and in particular relates to a flue gas desulfurization and denitrification tower for a thermal power plant. Background Art

[0002] Prior art has disclosed several invention patents in the field of flue gas purification technology. Among them, Chinese patent CN109092018B discloses a flue gas desulfurization and denitrification device, comprising the following steps: S1: introducing a neutral absorption liquid: introducing a neutral solution into a reaction tower so that the neutral solution completely covers the bottom of the reaction tower; S2: heating: heating the neutral solution described in S1 to obtain a hot neutral solution; S3: atomizing the absorption liquid: atomizing the hot neutral solution described in S2; and S4: introducing flue gas and ozone: introducing ozone and flue gas into the reaction tower at a molar ratio of ozone to nitrogen oxides of 1-2.5:3 to obtain a flue gas mixture. This technical solution is rationally designed and highly practical. By spraying heated water onto the flue gas mixture, the flue gas mixture is fully contacted with the water, improving water washing efficiency. During the mixing process of the flue gas mixture and the spray, the temperature of the flue gas mixture is rapidly increased, facilitating denitrification of the flue gas mixture in subsequent steps.

[0003] The flue gas desulfurization and denitrification devices in the existing technology still have some shortcomings during use. The spray nozzles are mostly directly installed inside the desulfurization and denitrification towers, which affects the effect when blocked and is inconvenient to repair or replace. In addition, the flow of flue gas will be blocked during the spraying process, causing the flue gas to flow along the wall, seriously affecting the desulfurization and denitrification effects.

[0004] Based on this, the present invention designs a flue gas desulfurization and denitrification tower for a thermal power plant to solve the above problems. Summary of the Invention

[0005] The purpose of the present invention is to solve the problems that the flue gas desulfurization and denitrification devices in the prior art still have some shortcomings during their use. Most of the spray nozzles are directly installed inside the desulfurization and denitrification towers, which affect the effect when blocked and are inconvenient to repair or replace. In addition, the flow of flue gas is blocked during the spraying process, causing the flue gas to flow along the wall, seriously affecting the desulfurization and denitrification effects. A flue gas desulfurization and denitrification tower for a thermal power plant is proposed.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A flue gas desulfurization and denitrification tower for a thermal power plant includes a flue gas purification tower, wherein a flue gas pretreatment assembly is disposed inside the flue gas purification tower. The flue gas pretreatment assembly includes guide vanes and a flue gas inlet pipe. The flue gas inlet pipe is connected to the flue gas purification tower in a tangential direction of the guide vanes. The flue gas from the thermal power plant flows toward the guide vanes through the flue gas inlet pipe. The tangentially introduced flue gas from the thermal power plant rotates and cooperates with the guide vanes to separate the flue gas and dust.

[0008] A No. 1 gap is provided outside the flue gas purification tower, and a particulate matter purification component is clamped in the No. 1 gap. A plurality of No. 2 gaps are provided outside the flue gas purification tower, and a flue gas desulfurization and denitrification component is clamped in each of the No. 2 gaps.

[0009] As a further description of the above technical solution:

[0010] The flue gas pretreatment component includes a plurality of adapter ring sleeves, and the plurality of adapter ring sleeves are rotatably connected to the interior of the flue gas purification tower, and the plurality of adapter ring sleeves are connected through the same embedded guide vane.

[0011] As a further description of the above technical solution:

[0012] A conical cylinder and a dirt collecting hopper are sequentially sleeved below the corresponding guide blades inside the flue gas purification tower. A flue gas inlet pipe is connected under the dirt collecting hopper. The other end of the flue gas inlet pipe passes through a connecting hole opened in the wall of the flue gas purification tower and extends to the outside of the flue gas purification tower.

[0013] As a further description of the above technical solution:

[0014] The particulate matter purification component includes a No. 1 pull-out box, the No. 1 pull-out box is clamped in the No. 1 notch, the No. 1 pull-out box is provided with a No. 1 communication port corresponding to the interior of the flue gas purification tower, the No. 1 pull-out box is plug-inly connected to a No. 1 drawer, and the No. 1 drawer is provided with a No. 1 docking port corresponding to the No. 1 communication port;

[0015] The interior of the No. 1 drawer is rotatably connected to the No. 1 adapter, and the No. 1 rotating ring is clamped with multiple universal bearings in a ring array on the inner ring surface of the No. 1 rotating ring, and an atomizing nozzle is sleeved in the universal bearing.

[0016] As a further description of the above technical solution:

[0017] The outside of the No. 1 rotating ring is connected to a plurality of No. 1 water wheel fins in a ring array, and the No. 1 drawer is provided with a liquid inlet on the tangential direction side corresponding to the No. 1 water wheel fins.

[0018] As a further description of the above technical solution:

[0019] The outer sleeve of the No. 1 rotating ring is provided with a connecting sleeve, which is connected to the atomizing nozzle. The connecting sleeve is provided with a through hole along the axial direction of the atomizing nozzle, and the high-pressure liquid in the No. 1 pull-out box enters the atomizing nozzle through the through hole;

[0020] The outer sleeve of the atomizing nozzle is provided with a supporting spring, and the connecting sleeve is elastically connected to the first rotating ring through the supporting spring.

[0021] As a further description of the above technical solution:

[0022] The first rotating ring is externally connected to a plurality of eccentric wheels in an annular array, and a rolling groove is provided under the eccentric wheel, and balls are rollingly connected in the rolling groove;

[0023] An abutment seat is provided on the outer periphery of the No. 1 rotating ring. A plurality of slope grooves are provided on the abutment seat. The eccentric wheel is connected to the abutment seat via ball rolling.

[0024] As a further description of the above technical solution:

[0025] The flue gas desulfurization and denitrification component includes a No. 2 pull-out box, which is snapped into the No. 2 notch. The No. 2 pull-out box is provided with a No. 2 connecting port corresponding to the inside of the flue gas purification tower. The No. 2 pull-out box is plug-inly connected with a No. 2 drawer, and the No. 2 drawer is provided with a No. 2 docking port corresponding to the No. 2 connecting port.

[0026] As a further description of the above technical solution:

[0027] A second rotating ring is rotatably connected to the second docking port inside the second drawer, and a plurality of fan blades are clamped in the second rotating ring. The fan blades are configured as a hollow structure, and an atomizing spray hole is opened at the end of the fan blade;

[0028] The second rotating ring is externally connected to a plurality of second water wheel fins in a ring array, and the second pull-out box is provided with a liquid medicine inlet in a tangential direction corresponding to the second water wheel fins.

[0029] As a further description of the above technical solution:

[0030] The flue gas purification tower is connected to a tower cover, which is provided with a flue gas discharge port. The flue gas from the thermal power plant is discharged through the flue gas discharge port after being purified by a flue gas pretreatment component, a particulate matter purification component and multiple flue gas desulfurization and denitrification components.

[0031] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0032] 1. In the present invention, the desulfurization and denitrification liquid drives the No. 2 water wheel fin, and the No. 2 water wheel fin rotates through the No. 2 rotating ring. During the rotation of the No. 2 rotating ring, it also drives multiple fan blades to perform circular motion. In this process, the desulfurization and denitrification liquid in the No. 2 drawer flows into the fan blades, and is sprayed out through the atomizing nozzle under the joint action of liquefaction and centrifugal force to mix with the flue gas from the thermal power plant after dust removal, thereby removing nitrates and sulfides in the flue gas from the thermal power plant. The rotating fan blades can not only play a circumferential flow to enhance the mixing effect of the desulfurization and denitrification liquid and the long electric heating flue gas, but also can induce the flue gas from the thermal power plant to flow upward, thereby preventing the flue gas from flowing against the wall when passing through the flue gas desulfurization and denitrification component, which affects the desulfurization and denitrification effect of the flue gas. The No. 1 pull-out box and the No. 1 drawer are of a plug-in structure, and the No. 2 pull-out box and the No. 2 drawer are of a plug-in structure, which is convenient for the removal and replacement of the particle purification component and the flue gas desulfurization and denitrification component.

[0033] 2. In the present invention, the eccentric wheel will also roll on the abutment seat through the ball during the rotation process. When the ball rolls in the slope groove on the abutment seat, the atomizing nozzle rises up under the action of the elastic force of the supporting spring. When the ball rolls out of the slope groove, the atomizing nozzle tilts down under the support of the abutment seat. The spray direction of the atomizing nozzle can be changed during the circular motion of multiple atomizing nozzles. The contact forms of the atomized dust reduction water and the rotating thermal power plant flue gas are diverse, which is conducive to further improving the dust reduction effect on the rotating thermal power plant flue gas, removing the smoke particles in the thermal power plant flue gas to a higher extent, and ensuring the desulfurization and denitrification effect of the subsequent chemical liquid on the thermal power plant flue gas.

[0034] 3. In the present invention, dust reduction water is injected into the No. 1 pull-out box through the liquid inlet. The dust reduction water drives the No. 1 water wheel fin in the process of flowing along the tangential direction of the No. 1 water wheel fin. The No. 1 water wheel fin rotates through the No. 1 rotating ring. The No. 1 rotating ring drives multiple atomizing nozzles to rotate at the same time. During the rotation of the atomizing nozzle, the dust reduction water introduced into the No. 1 pull-out box flows into the interior of the atomizing nozzle, and is finally sprayed into the interior of the flue gas purification tower in the form of atomization. The rotation direction of the atomized dust reduction water is opposite to the rotation direction of the rotating thermal power plant flue gas. The rotating thermal power plant flue gas and the atomized dust reduction water offset each other, which can effectively prolong the contact time between the rotating thermal power plant flue gas and the atomized dust reduction water, so that the rotating power plant flue gas can fully contact with the atomized dust reduction water, thereby improving the water washing effect of the thermal power plant flue gas.

[0035] 4. In the present invention, the flue gas from the thermal power plant will rotate when it enters the flue gas purification tower through the flue gas inlet pipe arranged along the tangential direction of the flue gas purification tower. The flue gas from the thermal power plant will generate strong rotation due to the guide effect of the guide vanes. The flue gas from the thermal power plant spirals downward along the inner wall of the flue gas purification tower into the conical cylinder. The smoke dust with high density is thrown toward the inner wall of the flue gas purification tower and the inner wall of the conical cylinder under the action of centrifugal force, and falls along the inner wall of the flue gas purification tower and the inner wall of the conical cylinder under the action of gravity and flows into the sewage collecting hopper and finally discharged from the sewage pipe. The rotating flue gas from the thermal power plant shrinks in the cylinder and flows toward the particulate matter purification component. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of a flue gas desulfurization and denitrification tower for a thermal power plant proposed by the present invention;

[0037] Figure 2 This is a schematic diagram of the three-dimensional structure of a flue gas desulfurization and denitrification tower for a thermal power plant proposed by the present invention from another perspective;

[0038] Figure 3 This is a schematic diagram of the three-dimensional structure of a flue gas desulfurization and denitrification component in a flue gas desulfurization and denitrification tower of a thermal power plant proposed by the present invention;

[0039] Figure 4 This is a schematic diagram of the disassembled three-dimensional structure of a flue gas desulfurization and denitrification tower for a thermal power plant proposed by the present invention;

[0040] Figure 5 This is a schematic diagram of the structure of the No. 1 gap and the No. 2 gap in the flue gas desulfurization and denitrification tower of a thermal power plant proposed by the present invention;

[0041] Figure 6 This is a schematic cross-sectional view of a flue gas purification tower in a flue gas desulfurization and denitrification tower of a thermal power plant proposed by the present invention;

[0042] Figure 7 This is a schematic diagram of the disassembled three-dimensional structure of the flue gas desulfurization and denitrification components in the flue gas desulfurization and denitrification tower of a thermal power plant proposed by the present invention;

[0043] Figure 8 This is a schematic diagram of the three-dimensional structure of a particulate matter purification component in a flue gas desulfurization and denitrification tower of a thermal power plant proposed by the present invention;

[0044] Figure 9 This is a schematic diagram of the three-dimensional structure of the No. 1 rotating ring in the flue gas desulfurization and denitrification tower of a thermal power plant proposed by the present invention;

[0045] Figure 10 This is a schematic diagram of the three-dimensional structure of the particulate matter purification component in the flue gas desulfurization and denitrification tower of a thermal power plant proposed by the present invention after being disassembled.

[0046] Legend:

[0047] 1. Flue gas purification tower; 2. Base; 3. Flue gas pretreatment assembly; 301. Adapter ring; 302. Guide vane; 303. Conical cylinder; 304. Sewage collecting hopper; 305. Flue gas inlet pipe; 306. Sewage discharge pipe; 4. Notch No. 1; 5. Notch No. 2; 6. Particle purification assembly; 601. Pull-out box No. 1; 602. Connecting port No. 1; 603. Drawer No. 1; 604. Docking port No. 1; 605. Rotating ring No. 1; 606. Water No. 1 Wheel fins; 607, atomizing nozzle; 608, connecting sleeve; 609, eccentric wheel; 610, ball bearing; 611, abutment seat; 612, liquid inlet; 7, flue gas desulfurization and denitrification component; 701, No. 2 pull-out box; 702, No. 2 connecting port; 703, No. 2 drawer; 704, No. 2 docking port; 705, No. 2 rotating ring; 706, fan blades; 707, No. 2 water wheel fins; 708, liquid medicine inlet; 8, tower cover; 9, flue gas discharge port. DETAILED DESCRIPTION

[0048] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. 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 making any creative efforts shall fall within the scope of protection of the present invention.

[0049] See also Figures 1-10 The present invention provides a technical solution: a flue gas desulfurization and denitrification tower for a thermal power plant, comprising a flue gas purification tower 1, wherein a flue gas pretreatment assembly 3 is provided inside the flue gas purification tower 1, and the flue gas pretreatment assembly 3 comprises a guide vane 302 and a flue gas inlet pipe 305, wherein the flue gas inlet pipe 305 is externally connected to the flue gas purification tower 1 along a tangential direction of the guide vane 302, and the flue gas of the thermal power plant flows through the flue gas inlet pipe 305 and flows into the guide vane 302 along the tangential direction, and the flue gas of the thermal power plant introduced along the tangential direction performs a rotational motion and cooperates with the guide vane 302 to separate the flue gas and smoke dust;

[0050] A first notch 4 is provided outside the flue gas purification tower 1 , into which a particle purification component 6 is clamped. A plurality of second notches 5 are provided outside the flue gas purification tower 1 , into which flue gas desulfurization and denitrification components 7 are clamped.

[0051] Specifically, such as Figure 1 and Figure 4As shown, the flue gas pretreatment component 3 includes a plurality of adapter ring sleeves 301, and the plurality of adapter ring sleeves 301 are rotatably connected to the inside of the flue gas purification tower 1, and the plurality of adapter ring sleeves 301 are connected by the same embedded guide vane 302. The conical cylinder 303 and the dirt collecting hopper 304 are sequentially sleeved below the corresponding guide vanes 302 inside the flue gas purification tower 1. The dirt collecting hopper 304 is connected to a flue gas inlet pipe 305 below, and the other end of the flue gas inlet pipe 305 extends to the outside of the flue gas purification tower 1 after passing through the connection hole opened in the wall of the flue gas purification tower 1.

[0052] The specific implementation method is as follows: the flue gas from the thermal power plant enters the flue gas purification tower 1 through the flue gas inlet pipe 305. Since the interior of the flue gas purification tower 1 is a circular structure, the flue gas from the thermal power plant will rotate when entering the flue gas purification tower 1 through the flue gas inlet pipe 305 arranged in the tangential direction of the flue gas purification tower 1. The flue gas from the thermal power plant is strongly rotated by the guide effect of the guide vanes 302. The flue gas from the thermal power plant spirals downward along the inner wall of the flue gas purification tower 1 into the conical cylinder 303. The smoke dust with high density is thrown toward the inner wall of the flue gas purification tower 1 and the inner wall of the conical cylinder 303 under the action of centrifugal force, and falls along the inner wall of the flue gas purification tower and the inner wall of the conical cylinder 303 under the action of gravity, and flows into the sewage collecting hopper 304, and is finally discharged from the sewage pipe 306.

[0053] Specifically, such as Figure 1 、 Figure 2 、 Figure 4-Figure 6 and 8- Figure 10 As shown, the particulate matter purification component 6 includes a No. 1 pull-out box 601, which is snapped into the No. 1 notch 4. The No. 1 pull-out box 601 is provided with a No. 1 connecting port 602 corresponding to the interior of the flue gas purification tower 1. The No. 1 pull-out box 601 is plug-inly connected to a No. 1 drawer 603. The No. 1 drawer 603 is provided with a No. 1 docking port 604 corresponding to the No. 1 connecting port 602.

[0054] The interior of the No. 1 drawer 603 corresponds to the No. 1 adapter and is rotatably connected to the No. 1 rotating ring 605. The inner ring surface of the No. 1 rotating ring 605 is clamped with multiple universal bearings in an annular array. The atomizing nozzle 607 is sleeved inside the universal bearing. The No. 1 rotating ring 605 is externally connected to multiple No. 1 water wheel fins 606 in an annular array. The No. 1 drawer 603 is provided with a liquid inlet 612 on the tangential side corresponding to the No. 1 water wheel fin 606. The outer periphery of the No. 1 rotating ring 605 is sleeved with a coupling sleeve 608, which is connected to the atomizing nozzle 607. The coupling sleeve 608 is provided with a through hole along the axial direction of the atomizing nozzle 607. The high-pressure liquid in the No. 1 pull-out box 601 enters the atomizing nozzle 607 through the through hole.

[0055] The outer sleeve of the atomizing nozzle 607 is provided with a supporting spring, and the connecting sleeve 608 is elastically connected to the No. 1 rotating ring 605 through the supporting spring. The No. 1 rotating ring 605 is externally connected to multiple eccentric wheels 609 in a ring array. When the No. 1 rotating ring 605 drives the atomizing nozzle 607 to rotate, the atomizing nozzle 607 will drive the connecting sleeve 608 to perform synchronous rotation. The rotation of the connecting sleeve 608 drives the eccentric wheel 609 to perform circular motion. The eccentric wheel 609 will vibrate during the circular motion. Under the action of the vibration wave, the surface of the atomized dust suppression water sprayed by the atomizing nozzle 607 will fluctuate. A rolling groove is provided under the eccentric wheel 609, and a ball 610 is connected in a rolling manner in the rolling groove.

[0056] An abutment seat 611 is provided on the outer periphery of the number one rotating ring 605 . A plurality of slope grooves are provided on the abutment seat 611 . The eccentric wheel 609 is rollingly connected to the abutment seat 611 via balls 610 .

[0057] The specific implementation method is as follows: dust reduction water is injected into the No. 1 pull-out box 601 through the liquid inlet 612. The dust reduction water drives the No. 1 water wheel fin 606 in the process of flowing in the tangential direction of the No. 1 water wheel fin 606. The No. 1 water wheel fin 606 rotates through the No. 1 rotating ring 605. The No. 1 rotating ring 605 drives multiple atomizing nozzles 607 to rotate at the same time. During the rotation of the atomizing nozzle 607, the dust reduction water introduced into the No. 1 pull-out box 601 flows into the interior of the atomizing nozzle 607, and is finally sprayed into the interior of the flue gas purification tower 1 in the form of atomization. The rotation direction of the atomized dust reduction water is the same as that of the rotating flue gas of the thermal power plant. The directions of rotation are opposite, and the rotating flue gas from the thermal power plant and the atomized dust reduction water collide with each other. During the rotation, the eccentric wheel 609 will also roll on the abutment seat 611 through the ball 610. When the ball 610 rolls in the slope groove on the abutment seat 611, the atomizing nozzle 607 is tilted up under the action of the elastic force of the supporting spring. When the ball 610 rolls out of the slope groove, the atomizing nozzle 607 is supported by the abutment seat 611, and the spraying direction of the atomizing nozzle 607 can be changed in the process of multiple atomizing nozzles 607 making circular motion. The contact forms of the atomized dust reduction water and the rotating flue gas from the thermal power plant are various.

[0058] Specifically, such as Figures 1-6 As shown, the flue gas desulfurization and denitrification component 7 includes a No. 2 pull-out box 701, which is clamped in the No. 2 notch 5. The No. 2 pull-out box 701 is provided with a No. 2 connecting port 702 corresponding to the flue gas purification tower 1. The No. 2 drawer 703 is plug-inly connected in the No. 2 pull-out box 701. The No. 2 drawer 703 is provided with a No. 2 docking port 704 corresponding to the No. 2 connecting port 702. The No. 2 drawer 703 is rotatably connected to the No. 2 docking port 704 in correspondence with the No. 2 docking port 704. A No. 2 rotating ring 705 is rotatably connected to the No. 2 docking port 704. A plurality of fan blades 706 are clamped in the No. 2 rotating ring 705. The fan blades 706 are provided with a hollow structure, and an atomizing spray hole is provided at the end of the fan blade 706.

[0059] The No. 2 rotating ring 705 is externally connected to a plurality of No. 2 water wheel fins 707 in a circular array. The No. 2 pull-out box 701 is provided with a liquid medicine inlet 708 in the tangential direction corresponding to the No. 2 water wheel fin 707. The flue gas purification tower 1 is connected to a tower cover 8, and a flue gas discharge port 9 is provided on the tower cover 8. The flue gas from the thermal power plant is discharged through the flue gas discharge port 9 after being purified by the flue gas pretreatment component 3, the particulate matter purification component 6 and a plurality of flue gas desulfurization and denitrification components 7.

[0060] The specific implementation method is as follows: desulfurization and denitrification liquid is poured into the No. 2 drawer 703 through the liquid inlet 708, and the desulfurization and denitrification liquid drives the No. 2 water wheel fin 707, and the No. 2 water wheel fin 707 rotates through the No. 2 rotating ring 705. During the rotation of the No. 2 rotating ring 705, multiple fan blades 706 are also driven to perform circular motion. During this process, the desulfurization and denitrification liquid in the No. 2 drawer 703 flows into the fan blades 706, and is sprayed out through the atomizing nozzle under the joint action of liquefaction and centrifugal force to mix with the flue gas of the thermal power plant after dust removal, thereby removing nitrates and sulfides in the flue gas of the thermal power plant. The rotating fan blades 706 can not only play a circumferential role in enhancing the mixing effect of the desulfurization and denitrification liquid and the long electric heating flue gas, but also can induce the flue gas of the thermal power plant to flow upward.

[0061] Working principle, when using:

[0062] The flue gas from the thermal power plant enters the flue gas purification tower 1 through the flue gas inlet pipe 305. Since the interior of the flue gas purification tower 1 is a circular structure, the flue gas from the thermal power plant will rotate when entering the flue gas purification tower 1 through the flue gas inlet pipe 305 arranged in the tangential direction of the flue gas purification tower 1. The flue gas from the thermal power plant is strongly rotated by the guide vane 302. The flue gas from the thermal power plant spirals downward along the inner wall of the flue gas purification tower 1 and enters the conical cylinder 303. The smoke dust with high density is thrown toward the inner wall of the flue gas purification tower 1 and the inner wall of the conical cylinder 303 under the action of centrifugal force, and falls along the inner wall of the flue gas purification tower and the inner wall of the conical cylinder 303 under the action of gravity. It flows into the dust collecting hopper 304 and is finally discharged from the sewage pipe 306. The rotating flue gas from the thermal power plant shrinks in the cylinder and flows toward the particulate matter purification component 6.

[0063] Dust reduction water is injected into the No. 1 pull-out box 601 through the liquid inlet 612. The dust reduction water drives the No. 1 water wheel fin 606 in the process of flowing in the tangential direction of the No. 1 water wheel fin 606. The No. 1 water wheel fin 606 rotates through the No. 1 rotating ring 605. The No. 1 rotating ring 605 simultaneously drives multiple atomizing nozzles 607 to rotate. During the rotation of the atomizing nozzle 607, the dust reduction water introduced into the No. 1 pull-out box 601 flows into the interior of the atomizing nozzle 607 and is finally sprayed into the interior of the flue gas purification tower 1 in the form of atomization. The rotation direction of the atomized dust reduction water is opposite to the rotation direction of the rotating thermal power plant flue gas. The rotating thermal power plant flue gas and the atomized dust reduction water offset each other, which can effectively prolong the contact time between the rotating thermal power plant flue gas and the atomized dust reduction water, so that the rotating power plant flue gas can fully contact with the atomized dust reduction water, thereby improving the water washing effect of the thermal power plant flue gas;

[0064] As the number one rotating ring 605 drives the atomizing nozzle 607 to rotate, the atomizing nozzle 607 drives the coupling sleeve 608 to perform synchronous rotational motion. The rotation of the coupling sleeve 608 drives the eccentric wheel 609 to perform circular motion. The eccentric wheel 609 vibrates during the circular motion. Under the action of the vibration wave, the surface of the atomized dust reduction water sprayed by the atomizing nozzle 607 will fluctuate, thereby further improving the purification effect of the atomized dust reduction water on the rotating power plant flue gas.

[0065] During the rotation process, the eccentric wheel 609 will also roll on the abutment seat 611 through the ball 610. When the ball 610 rolls in the slope groove on the abutment seat 611, the atomizing nozzle 607 is tilted upward under the action of the elastic force of the supporting spring. When the ball 610 rolls out of the slope groove, the atomizing nozzle 607 is supported by the abutment seat 611 and tilted downward. The spray direction of the atomizing nozzle 607 can be changed during the circular motion of the multiple atomizing nozzles 607. The contact forms of the atomized dust reduction water and the rotating thermal power plant flue gas are diverse, which is conducive to further improving the dust reduction effect on the rotating thermal power plant flue gas, removing the smoke particles in the thermal power plant flue gas to a high degree, and ensuring the desulfurization and denitrification effect of the subsequent chemical liquid on the thermal power plant flue gas.

[0066] Desulfurization and denitrification liquid is poured into the second drawer 703 through the liquid inlet 708, and the desulfurization and denitrification liquid drives the second water wheel fin 707, and the second water wheel fin 707 rotates through the second rotating ring 705. During the rotation of the second rotating ring 705, the plurality of fan blades 706 are also driven to perform circular motion. During this process, the desulfurization and denitrification liquid in the second drawer 703 flows into the fan blades 706, and is sprayed out through the atomizing nozzle under the combined action of liquefaction and centrifugal force to mix with the flue gas of the thermal power plant after dust removal, thereby removing nitrates and sulfides in the flue gas of the thermal power plant. The rotating fan blades 706 can not only play a role in bypassing and enhancing the mixing effect of the desulfurization and denitrification liquid and the long electric heating flue gas, but also can induce the flue gas of the thermal power plant to flow upward, thereby preventing the flue gas of the thermal power plant from adhering to the wall when passing through the flue gas desulfurization and denitrification component 7, which affects the desulfurization and denitrification effect of the flue gas.

[0067] There is a plug-in structure between the No. 1 pull-out box 601 and the No. 1 drawer 603, and there is a plug-in structure between the No. 2 pull-out box 701 and the No. 2 drawer 703, which facilitates the removal and replacement of the particle purification component and the flue gas desulfurization and denitrification component 7.

[0068] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A flue gas desulfurization and denitrification tower for a thermal power plant, comprising a flue gas purification tower (1), characterized in that: A flue gas pretreatment component (3) is provided inside the flue gas purification tower (1), and the flue gas pretreatment component (3) includes a guide vane (302) and a flue gas introduction pipe (305). The flue gas introduction pipe (305) is externally connected to the flue gas purification tower (1) along a tangential direction of the guide vane (302). Flue gas from the thermal power plant flows toward the guide vane (302) through the flue gas introduction pipe (305). The flue gas introduced along the tangential direction performs a rotational motion to cooperate with the guide vane (302) to separate the flue gas and smoke dust. The flue gas purification tower (1) is provided with a first notch (4) on the outside, a particle purification component (6) is clamped in the first notch (4), and the flue gas purification tower (1) is provided with a plurality of second notches (5) on the outside, a flue gas desulfurization and denitrification component (7) is clamped in each of the plurality of second notches (5); The particle purification component (6) includes a No. 1 pull-out box (601), the No. 1 pull-out box (601) is snap-fitted into the No. 1 notch (4), the No. 1 pull-out box (601) is provided with a No. 1 communication port (602) extending through the interior of the flue gas purification tower (1), the No. 1 pull-out box (601) is plug-connected with a No. 1 drawer (603), and the No. 1 drawer (603) is provided with a No. 1 docking port (604) extending through the No. 1 communication port (602); The interior of the No. 1 drawer (603) is rotatably connected to a No. 1 rotating ring (605) corresponding to the No. 1 transfer interface. The inner ring surface of the No. 1 rotating ring (605) is clamped with a plurality of universal bearings in a ring array. An atomizing nozzle (607) is sleeved in the universal bearing. The first rotating ring (605) is externally connected to a plurality of first water wheel fins (606) in a ring array, and the first drawer (603) is provided with a liquid inlet (612) on the tangential side corresponding to the first water wheel fin (606); The outer sleeve of the No. 1 rotating ring (605) is provided with a connecting sleeve (608), the connecting sleeve (608) is connected to the atomizing nozzle (607), and the connecting sleeve (608) is provided with a through hole along the axial direction of the atomizing nozzle (607), and the high-pressure liquid in the No. 1 pull-out box (601) enters the atomizing nozzle (607) through the through hole; The outer sleeve of the atomizing nozzle (607) is provided with a supporting spring, and the connecting sleeve (608) is elastically connected to the first rotating ring (605) via the supporting spring; The first rotating ring (605) is externally connected to a plurality of eccentric wheels (609) in an annular array, and a rolling groove is provided under the eccentric wheel (609), and a ball (610) is rollingly connected in the rolling groove; The outer periphery of the first rotating ring (605) is provided with an abutment seat (611), a plurality of slope grooves are provided on the abutment seat (611), and the eccentric wheel (609) is rollingly connected to the abutment seat (611) via balls (610).

2. A flue gas desulfurization and denitrification tower for a thermal power plant according to claim 1, characterized in that: The flue gas pretreatment assembly (3) comprises a plurality of adapter rings (301), and the plurality of adapter rings (301) are all rotatably connected to the interior of the flue gas purification tower (1), and the plurality of adapter rings (301) are connected via the same embedded guide vane (302).

3. A flue gas desulfurization and denitrification tower for a thermal power plant according to claim 2, characterized in that: A conical cylinder (303) and a dirt collecting hopper (304) are sequentially sleeved below the corresponding guide vanes (302) inside the flue gas purification tower (1); a sewage discharge pipe (306) is connected below the sewage collecting hopper (304); the other end of the sewage discharge pipe (306) passes through a connecting hole provided in the wall of the flue gas purification tower (1) and extends to the outside of the flue gas purification tower (1).

4. A flue gas desulfurization and denitrification tower for a thermal power plant according to claim 1, characterized in that: The flue gas desulfurization and denitrification component (7) includes a No. 2 pull-out box (701), which is snap-fitted into the No. 2 notch (5), and a No. 2 connecting port (702) is provided through the No. 2 pull-out box (701) corresponding to the interior of the flue gas purification tower (1), and a No. 2 drawer (703) is plug-in-connected in the No. 2 pull-out box (701), and a No. 2 docking port (704) is provided through the No. 2 drawer (703) corresponding to the No. 2 connecting port (702).

5. A flue gas desulfurization and denitrification tower for a thermal power plant according to claim 4, characterized in that: A second rotating ring (705) is rotatably connected to the second docking port (704) inside the second drawer (703), and a plurality of fan blades (706) are clamped inside the second rotating ring (705). The fan blades (706) are configured as a hollow structure, and an atomizing spray hole is provided at the end of the fan blade (706); The second rotating ring (705) is externally connected to a plurality of second water wheel fins (707) in a ring array, and the second pull-out box (701) is provided with a liquid medicine inlet (708) in a tangential direction corresponding to the second water wheel fins (707).

6. A flue gas desulfurization and denitrification tower for a thermal power plant according to claim 1, characterized in that: The flue gas purification tower (1) is connected to a tower cover (8), and a flue gas discharge port (9) is provided on the tower cover (8). Flue gas from the thermal power plant is discharged through the flue gas discharge port (9) after being purified by a flue gas pretreatment component (3), a particulate matter purification component (6), and a plurality of flue gas desulfurization and denitrification components (7).

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