A flue gas desulfurization device

Abstract

The present application relates to a flue gas desulfurization device, which relates to the technical field of flue gas treatment. The flue gas desulfurization device includes a cylinder body, an inlet flue pipe is connected to the outside of the cylinder body, an outlet flue pipe is connected to the top of the cylinder body, and a filtering mechanism and a spraying mechanism are arranged inside the cylinder body; the filtering mechanism includes an installation circular frame and a plurality of filtering units, the installation circular frame is coaxially arranged inside the cylinder body, a plurality of installation sockets are arranged on the outside of the installation circular frame, the filtering units are arranged in one-to-one correspondence with the installation sockets, and the filtering units are in plug-in fit with the corresponding installation sockets; a plurality of filtering hole groups are arranged through the upper side of the installation circular frame, the filtering hole groups are arranged in one-to-one correspondence with the installation sockets, and the filtering hole groups are communicated with the corresponding installation sockets; a plurality of replacement openings are arranged on the outside of the cylinder body, the replacement openings are arranged in one-to-one correspondence with the installation sockets, the replacement openings are directly opposite and communicated with the corresponding installation sockets, and the filtering units are in plug-in fit with the corresponding replacement openings. The present application can reduce the downtime of the flue gas desulfurization device and ensure the flue gas desulfurization efficiency.

Description

Technical Field

[0001] This application relates to the technical field of flue gas treatment, and in particular to a flue gas desulfurization device. Background Technique

[0002] Currently, wet flue gas desulfurization is mainly used for flue gas desulfurization. The principle of wet flue gas desulfurization is as follows: The alkaline liquid in the spray tower or absorption tower contacts the flue gas, so that the alkaline liquid absorbs sulfur dioxide in the flue gas and generates sulfite or sulfate.

[0003] Since the existing flue gas often carries some solid impurities, the presence of these solid impurities will affect the full contact between the alkaline liquid and sulfur dioxide in the flue gas, thereby reducing the desulfurization effect.

[0004] Based on such problems, a multi-stage filtration structure is added to the existing flue gas desulfurization device. When the flue gas enters the flue gas desulfurization device, as the flue gas rises, the flue gas passes through the multi-stage filtration structure, which can separate the solid impurities in the flue gas, and then wet desulfurization of the flue gas is carried out by spraying, so that the sprayed alkaline liquid can fully contact sulfur dioxide in the flue gas, thereby improving the desulfurization effect of the flue gas.

[0005] In view of the above related technologies, since the solid impurities in the flue gas will adhere to the filtration structure, and as the continuous progress of flue gas desulfurization, it will eventually lead to the blockage of the filtration structure. At this time, the flue gas desulfurization device needs to be shut down and disassembled, and the filtration structure needs to be cleaned or replaced, which will affect the efficiency of flue gas desulfurization. Summary of the Invention

[0006] This application provides a flue gas desulfurization device, and its purpose is to reduce the downtime of the flue gas desulfurization device and ensure the efficiency of flue gas desulfurization.

[0007] The flue gas desulfurization device provided by this application adopts the following technical solutions:

[0008] A flue gas desulfurization device includes a cylinder body. A smoke inlet pipe is connected to the outside of the cylinder body, and a smoke outlet pipe is connected to the top of the cylinder body. A filtering mechanism and a spraying mechanism are arranged inside the cylinder body, and the spraying mechanism, the filtering mechanism, and the smoke inlet pipe are arranged in sequence from top to bottom. The filtering mechanism includes an installation circular frame and a number of filtering units. The installation circular frame is coaxially arranged inside the cylinder body, and the installation circular frame is connected to the inner side wall of the cylinder body. A number of installation sockets are arranged on the outside of the installation circular frame, and the filtering units are arranged in one-to-one correspondence with the installation sockets. The filtering units are in plug-in fit with the corresponding installation sockets. A number of filtering hole groups are penetrated and arranged on the upper side of the installation circular frame, and the filtering hole groups are arranged in one-to-one correspondence with the installation sockets. The filtering hole groups are communicated with the corresponding installation sockets. A number of replacement openings are arranged on the outside of the cylinder body, and the replacement openings are arranged in one-to-one correspondence with the installation sockets. The replacement openings are directly opposite and communicated with the corresponding installation sockets, and the filtering units are in plug-in fit with the corresponding replacement openings.

[0009] By adopting the above technical solutions, firstly, the flue gas desulfurization device can filter and then desulfurize the flue gas introduced into the cylinder body through the cooperation of the cylinder body, the filtering mechanism, and the spraying mechanism.

[0010] Secondly, the filtering mechanism is arranged through the cooperation of the installation circular frame and a number of filtering units. Installation sockets are arranged on the outside of the installation circular frame, and the filtering units are inserted into the corresponding installation sockets. Filtering hole groups are arranged on the installation circular frame, and the installation sockets are communicated with the filtering hole groups. With such a structural arrangement, during the upward movement of the flue gas in the cylinder body, the flue gas can enter the corresponding installation socket through the corresponding filtering hole group. At this time, the filtering unit filters the flue gas, and the filtered flue gas can then be discharged from the installation socket through the corresponding filtering hole group. This enables the filtering mechanism to have a filtering function for the flue gas.

[0011] Since the installation sockets arranged on the outside of the installation circular frame are in one-to-one plug-in fit with the filtering units, such a structural arrangement facilitates the installation and replacement of the filtering units on the installation circular frame.

[0012] And because replacement openings are arranged on the outside of the cylinder body, the replacement openings are directly opposite and communicated with the installation sockets, and the filtering units are in plug-in fit with the replacement openings, it is possible to directly remove the corresponding filtering unit from the installation circular frame outside the cylinder body and install a new filtering unit on the installation circular frame, which is more convenient for the replacement of the filtering units.

[0013] Therefore, during the process of flue gas desulfurization, when the flow velocity of the flue gas decreases and the pressure inside the cylinder increases, it indicates that the filtering mechanism is blocked. At this time, several filtering units inside the filtering mechanism can be replaced in sequence outside the cylinder. When the filtering units are replaced in this way, it is not necessary to disassemble the flue gas desulfurization device, and it can also be carried out during the use of the flue gas desulfurization device. This can reduce the downtime of the flue gas desulfurization device caused by replacing the filtering units, and thus ensure the efficiency of flue gas desulfurization.

[0014] Optionally, sealing control components are arranged on both the upper and lower sides of the installation circular frame. The sealing control components include a plurality of sector plates. The sector plates are slidably connected to the upper or lower side of the installation circular frame. The sector plates are arranged in one-to-one correspondence with the filter hole groups, and the sector plates seal the corresponding filter hole groups. A plurality of sealing driving members are arranged on the installation circular frame. The sealing driving members are arranged in one-to-one correspondence with the sector plates. The driving ends of the sealing driving members are connected to the corresponding sector plates. The sealing driving members are used to drive the sector plates to slide open or close the corresponding filter hole groups.

[0015] By adopting the above technical solution, the sealing control component can control the opening and closing of the corresponding filter hole groups through the cooperation of the sector plates and the sealing driving members, so that the filtering units for flue gas filtration can be freely selected.

[0016] And during the actual operation process, when it is necessary to maintain or replace the filtering units, the sealing driving members are used to drive the sector plates to slide, and the corresponding filter hole groups are sealed, so as to cut off the flow of flue gas through the filtering units. In this way, the flue gas can pass through other normally operating filtering units, which can realize the local switching of the filtering function, and at the same time avoid the situation that the entire flue gas desulfurization device needs to be shut down for treatment due to problems with individual or partial filtering units, greatly improving the flexibility and reliability of the operation of the flue gas desulfurization device.

[0017] Optionally, smoke passing holes are formed in the inner side wall of the installation socket, and the smoke passing holes communicate with two adjacent installation sockets. A plurality of connection control components are arranged on the installation circular frame. The connection control components are arranged in one-to-one correspondence with the smoke passing holes. The connection control components are used to control the opening and closing of the corresponding smoke passing holes.

[0018] By adopting the above technical solution, the formation of the smoke passing holes and the cooperation of the connection control components can control the connection and sealing of two installation sockets.

[0019] Under normal circumstances, the flue gas is filtered through the filtering unit. When it is necessary to increase the contact time between the flue gas and the filtering unit, under the action of a number of closed control components, one set of filtering holes on the lower side of a filtering unit is opened and the set of filtering holes on the upper side is closed, while the set of filtering holes on the lower side of another filtering unit is closed and the set of filtering holes on the upper side is opened. Under the action of a number of connecting control components, a number of smoke passage holes between the two selected filtering units are all opened. At this time, the flue gas entering the filtering mechanism will sequentially pass through all the filtering units between the two selected filtering units, which can extend the contact time between the flue gas and the filtering unit, thereby increasing the filtering effect.

[0020] This design not only improves the adaptability of the filtering mechanism, enabling it to flexibly adjust the flow path of the flue gas according to the actual working conditions, but also enhances the filtering effect to a certain extent. Because the flue gas can be filtered multiple times through multiple filtering units, the residence time of the flue gas in the filtering mechanism is extended, enabling solid impurities to be more fully separated.

[0021] Optionally, a number of the filtering mechanisms and the spraying mechanisms are provided. The filtering mechanisms and the spraying mechanisms are arranged in one-to-one correspondence. The spraying mechanism is located directly above the corresponding filtering mechanism, and a number of the filtering mechanisms and a number of the spraying mechanisms are alternately arranged in sequence in the vertical direction.

[0022] By adopting the above technical solution, a number of the filtering mechanisms and the spraying mechanisms are provided. The arrangement of the filtering mechanisms and the spraying mechanisms enables the flue gas to sequentially pass through a number of the filtering mechanisms and a number of the spraying mechanisms during the rising process, achieving the effects of multi-stage filtering and desulfurization, which can effectively remove solid impurities and sulfur dioxide in the flue gas, etc., and improve the quality of flue gas desulfurization.

[0023] Optionally, the cylinder body includes a base, an upper cover, and a number of intermediate rings. The number of intermediate rings are sequentially arranged along their own axes. The intermediate rings are axially located between the upper cover and the base. The base and the adjacent intermediate ring, the upper cover and the adjacent intermediate ring, and between two adjacent intermediate rings are all detachably connected. The smoke inlet pipe is communicated with the base, and the smoke outlet pipe is communicated with the upper cover. The intermediate rings are arranged in one-to-one correspondence with the filtering mechanisms. The filtering mechanisms and the corresponding spraying mechanisms are both located within the corresponding intermediate rings, and the filtering mechanisms and the corresponding spraying mechanisms are both connected to the corresponding intermediate rings.

[0024] By adopting the above technical solution, the cylinder body is structured with a base, an upper cover and several intermediate rings. The several intermediate rings are arranged in sequence along their own axial directions, and the intermediate rings are located between the base and the upper cover. Since the base and the corresponding intermediate ring, the upper cover and the corresponding intermediate ring, and between two adjacent intermediate rings are all detachably connected, it is convenient to increase or decrease the number of intermediate rings, and thus it is possible to conveniently change the height of the cylinder body. And because a filtering mechanism and a spraying mechanism are arranged inside the intermediate ring, the number of filtering mechanisms and spraying mechanisms inside the cylinder body can also be adjusted by increasing or decreasing the number of intermediate rings. Therefore, according to actual usage needs, the number of intermediate rings can be freely increased, so that the flue gas desulfurization device can meet the flue gas desulfurization requirements of different treatment scales and treatment requirements.

[0025] Optionally, an intermediate flue gas duct mechanism is arranged between the filtering mechanism and the adjacent spraying mechanism; the intermediate flue gas duct mechanism includes a mounting main shaft and several partition plates. The mounting main shaft is located inside the cylinder body and is coaxially arranged with the cylinder body. The several partition plates are arranged on the side wall of the mounting main shaft, and the several partition plates are sequentially arranged at intervals along the circumferential direction of the mounting main shaft. An independent flue is formed between the outer side wall of the mounting main shaft, the inner side wall of the cylinder body and two adjacent partition plates, and the several independent flues are all independently arranged; the spraying mechanism includes several spraying units, and the spraying units are arranged in one-to-one correspondence with the filtering units. The spraying units and the corresponding filtering units are arranged directly opposite to each other in the vertical direction; the independent flues are arranged in one-to-one correspondence with the filtering units, the corresponding filtering hole groups are located in the corresponding independent flues, and the corresponding spraying units are located in the independent flues.

[0026] By adopting the above technical solution, the intermediate flue gas duct mechanism is formed with several independent flues between the filtering mechanism and the adjacent spraying mechanism through the cooperation of the mounting main shaft and several partition plates. The arrangement of the independent flues makes the flow of flue gas between the filtering mechanism and the spraying mechanism more orderly, and avoids the phenomenon of turbulent flow of flue gas inside the cylinder body.

[0027] And because the independent flues are arranged in one-to-one correspondence with the filtering units, and the filtering hole groups corresponding to the filtering units are located in the corresponding independent flues, and the spraying units are also located in the corresponding flues. This enables the flue gas to enter the corresponding spraying unit for desulfurization treatment through the independent flue after being filtered by the filtering unit, and then enter the next filtering unit through the independent flue, and so on in a cycle. This design not only improves the efficiency of flue gas filtration and desulfurization, but also can better control the flow path and speed of the flue gas, so that the flue gas can fully contact the filtering unit and the spraying unit during the filtration and desulfurization process, and improves the effect of filtration and desulfurization.

[0028] Meanwhile, the mutual independence of the independent flues also ensures that when maintaining or replacing components within a certain independent flue, it will not affect the normal operation of other independent flues, further improving the operational reliability and maintenance convenience of the device, reducing the risk of shutdown caused by local failures, and ensuring the efficiency of flue gas desulfurization.

[0029] Optionally, a number of maintenance openings are provided on the outer side wall of the cylinder body, and the maintenance openings are arranged in one-to-one correspondence with the independent flues, and the maintenance openings are communicated with the corresponding independent flues; a number of maintenance plates are arranged on the outer side wall of the cylinder body, the maintenance plates are detachably connected to the outer side wall of the cylinder body, the maintenance plates are arranged in one-to-one correspondence with the maintenance openings, and the maintenance plates close the corresponding maintenance openings.

[0030] By adopting the above technical solution, the maintenance openings provided on the outer side wall of the cylinder body are communicated with the independent flues in one-to-one correspondence, and detachable maintenance plates are provided to close the maintenance openings.

[0031] During the normal operation of the flue gas desulfurization device, the maintenance plates close the maintenance openings, ensuring the sealing performance of the cylinder body and the normal progress of the flue gas desulfurization process. When it is necessary to maintain, repair or replace the spray unit, only the corresponding maintenance plate needs to be opened, and then the inside of the independent flue can be accessed through the maintenance opening for operation without disassembling the entire cylinder body, greatly saving maintenance time and labor costs. At the same time, this design also enables maintenance personnel to more conveniently observe the internal situation of the independent flue, timely discover potential problems and handle them, improving the operational reliability and safety of the device.

[0032] Optionally, the installation circular frame includes a number of sector frames, the number of sector frames are sequentially arranged along the circumferential direction of the cylinder body, and two adjacent sector frames are detachably connected; the sector frames are arranged in one-to-one correspondence with the filtration units, the installation sockets are opened on the outer side walls of the corresponding sector frames, and the corresponding filtration hole groups are opened on the corresponding sector frames, the sector plates are arranged on the upper side or the lower side of the sector frames, the sector plates are slidably connected to the sector frames, and the closing driving members are arranged on the corresponding sector frames.

[0033] By adopting the above technical solution, the installation circular frame is composed of a number of sector frames, two adjacent sector frames are detachably connected, the sector frames are arranged in one-to-one correspondence with the filtration units, the filtration hole groups and the installation sockets are both opened on the sector frames, the sector plates are arranged in one-to-one correspondence with the sector frames and are slidably connected, and the closing driving members are arranged on the sector frames. The detachable connection method of the sector frames facilitates the assembly and disassembly of the installation circular frame. When it is necessary to replace a certain filtration unit or maintain the installation circular frame, only the corresponding sector frame needs to be disassembled, without large-scale disassembly of the entire installation circular frame, improving the maintenance efficiency.

[0034] Optionally, a plurality of replacement plates are provided on the outer side of the cylinder body. The replacement plates are detachably connected to the outer side of the cylinder body. The replacement plates are arranged in one-to-one correspondence with the replacement openings, and the replacement plates close the corresponding replacement openings.

[0035] By adopting the above technical solution, replacement plates are provided on the outer side of the cylinder body and are arranged in one-to-one correspondence with the replacement openings, and the replacement plates close the corresponding replacement openings. When the flue gas desulfurization device is operating normally, the replacement plates close the replacement openings to prevent flue gas from leaking through the replacement openings, ensuring the normal progress of the flue gas desulfurization process and the sealing performance of the device. When the filter unit needs to be replaced, the corresponding replacement plate is opened, and the filter unit can be replaced through the replacement opening.

[0036] In summary, the present application includes at least one of the following beneficial technical effects:

[0037] 1. Through the structural arrangement of the cylinder body and the filtering mechanism in the present application, it is convenient to replace the filter unit in the cylinder body, and the replacement of the filter unit can be realized during the operation of the flue gas desulfurization device, which can reduce the downtime of the flue gas desulfurization device and ensure the flue gas desulfurization efficiency.

[0038] 2. Through the coordinated arrangement of the closing control component and the communication control component in the present application, the contact time between the flue gas and the filter unit can be controlled, which can improve the flue gas filtering effect and further improve the flue gas desulfurization effect.

[0039] 3. Through the structural arrangement of the cylinder body in the present application, the flue gas desulfurization device can freely add or reduce the number of intermediate rings according to actual needs, so that the flue gas desulfurization device can adapt to different treatment requirements, and further improve the applicability of the flue gas desulfurization device of the present application.

[0040] 4. Through the structural arrangement of the cylinder body, the filtering mechanism, the spraying mechanism and the intermediate flue duct mechanism in the present application, during the operation of the flue gas desulfurization device, some structures inside the cylinder body can be overhauled simultaneously, which can further reduce the downtime of the flue gas desulfurization device. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 is the overall structural schematic diagram of the flue gas desulfurization device of the present application.

[0042] Figure 2 is the sectional structural schematic diagram of the flue gas desulfurization device of the present application.

[0043] Figure 3 is the overall structural schematic diagram of the intermediate ring of the present application.

[0044] Figure 4 is the sectional structural schematic diagram of the intermediate ring of the present application.

[0045] Figure 5It is a schematic diagram of the overall structure of the filtration mechanism of the present application.

[0046] Figure 6 It is an exploded structure diagram of the sector frame and the filtration unit of the present application.

[0047] Figure 7 It is a sectional structure diagram of the sector frame and the filtration unit of the present application.

[0048] Figure 8 It is a schematic diagram of the overall structure after assembling several sector frames of the present application.

[0049] Figure 9 It is a schematic diagram of the overall structure of the spraying mechanism and the intermediate flue gas mechanism of the present application.

[0050] In the figure, 1. Cylinder body; 11. Base; 12. Intermediate pipe; 121. Intermediate ring; 122. Replacement port; 123. Replacement plate; 124. Maintenance port; 125. Maintenance plate; 13. Upper cover; 2. Smoke inlet pipe; 3. Smoke outlet pipe; 4. Drain pipe; 5. Filtration mechanism; 51. Installation circular frame; 511. Reinforcing circular plate; 512. Sector frame; 5121. Filtration hole group; 5122. Installation socket; 513. Smoke through hole; 5131. First hole; 514. Installation hole; 5141. Installation groove; 52. Filtration unit; 521. Pull handle; 522. Sector shell; 523. Filter material; 53. Closing control component; 531. Sector plate; 532. Closing hole group; 533. Closing driving part; 54. Connecting control component; 541. Connecting plate; 542. Connecting hole; 543. Connecting driving part; 6. Spraying mechanism; 61. Installation circular plate; 611. Ventilation hole; 612. Hidden groove; 62. Spraying unit; 621. Spraying main pipe; 622. Spraying sub-pipe; 623. Spraying head; 7. Intermediate flue gas mechanism; 71. Installation main shaft; 72. Partition board; 73. Independent flue. Detailed implementation manners

[0051] The following Figure 1 - Figure 9 will further elaborate on the present application in conjunction with the

[0052] A flue gas desulfurization device, referring to Figure 1 and Figure 2, including a cylinder body 1, several filtering mechanisms 5 and several spraying mechanisms 6. The cylinder body 1 is arranged vertically. A smoke inlet pipe 2 is connected to the outside of the cylinder body 1. A smoke outlet pipe 3 is connected to the top of the cylinder body 1. A liquid discharge pipe 4 is connected to the bottom of the cylinder body 1. The filtering mechanisms 5 and the spraying mechanisms 6 are both located inside the cylinder body 1. Several filtering mechanisms 5 are arranged in sequence along the vertical direction, and the filtering mechanisms 5 and the spraying mechanisms 6 are arranged in one-to-one correspondence. The spraying mechanism 6 is located directly above the corresponding filtering mechanism 5. Several filtering mechanisms 5 and several spraying mechanisms 6 are arranged alternately in sequence along the vertical direction, and several filtering mechanisms 5 and several spraying mechanisms 6 are both located between the smoke inlet pipe 2 and the smoke outlet pipe 3 along the vertical direction.

[0053] When performing flue gas desulfurization, the flue gas is introduced into the cylinder body 1 through the smoke inlet pipe 2. The flue gas rises and passes through all the filtering mechanisms 5 and all the spraying mechanisms 6 in sequence, and finally is discharged from the smoke outlet pipe 3. During this process, the filtering mechanism 5 separates the solid impurities in the flue gas, and the spraying mechanism 6 sprays alkaline liquid to separate sulfur dioxide in the flue gas; and the excess alkaline liquid sprayed by the spraying mechanism 6 falls to the bottom of the cylinder body 1. When there is too much alkaline liquid at the bottom of the cylinder body 1, the liquid discharge pipe 4 is opened through a control valve, and a liquid pumping pump is used to make the liquid discharge pipe 4 discharge the excess alkaline liquid.

[0054] Referring to Figure 1 and Figure 2 , the cylinder body 1 includes a base 11, an intermediate pipe 12 and an upper cover 13. The intermediate pipe 12 is arranged vertically, and the base 11 is coaxially connected to the bottom of the intermediate pipe 12. The upper cover 13 is coaxially connected to the top of the intermediate pipe 12. The smoke outlet pipe 3 is connected to the upper cover 13. The smoke inlet pipe 2 is connected to the side wall of the base 11. The liquid discharge pipe 4 is connected to the bottom of the base 11, and both the smoke inlet pipe 2 and the liquid discharge pipe 4 are connected to the base 11.

[0055] In this embodiment, referring to Figure 2 and Figure 3 , the intermediate pipe 12 includes several intermediate rings 121. The axial direction of the intermediate rings 121 is arranged along the vertical direction. Several intermediate rings 121 are located between the base 11 and the upper cover 13 along the vertical direction. Several intermediate rings 121 are arranged in sequence along their own axial directions, and the base 11 and the adjacent intermediate ring 121, the upper cover 13 and the adjacent intermediate ring 121, and the adjacent two intermediate rings 121 are all detachably connected.

[0056] In this embodiment, between the base 11 and the adjacent intermediate ring 121, between the upper cover 13 and the adjacent intermediate ring 121, and between the adjacent two intermediate rings 121 are all connected by flanges or several bolts.

[0057] Referring to Figure 3 and Figure 4The filter mechanism 5 and the middle ring 121 are arranged one by one, the filter mechanism 5 and the corresponding spray mechanism 6 are both located in the corresponding middle ring 121, and the filter mechanism 5 and the spray mechanism 6 are both connected to the inner wall of the corresponding middle ring 121.

[0058] The structure of the intermediate tube 12 is arranged so that a filtering mechanism 5 and a spraying mechanism 6 are installed in each intermediate ring 121. Therefore, by increasing or decreasing the number of intermediate rings 121, the height of the cylinder 1 can be changed, and the number of times the flue gas is filtered and desulfurized in the cylinder 1 can also be changed.

[0059] Reference Figure 4 and Figure 5 The filtering mechanism 5 includes a mounting frame 51 and a plurality of filtering units 52. The mounting frame 51 is coaxially arranged in the corresponding intermediate ring 121, and the mounting frame 51 and the intermediate ring 121 are detachably connected. The filtering units 52 are arranged in the mounting frame 51, and the plurality of filtering units 52 are sequentially arranged along the circumference of the mounting frame 51, and the plurality of filtering units 52 are arranged in a circular pattern.

[0060] In this embodiment, refer to Figure 4 and Figure 5 The mounting frame 51 includes two reinforcing circular plates 511 and a plurality of fan-shaped frames 512. The reinforcing circular plates 511 are coaxially arranged with the middle ring 121, and the two reinforcing circular plates 511 are arranged at intervals in the vertical direction. The plurality of fan-shaped frames 512 are located between the two reinforcing circular plates 511 in the vertical direction. The plurality of fan-shaped frames 512 are arranged in sequence along the circumference of the reinforcing circular plates 511, and the plurality of fan-shaped frames 512 are arranged around the reinforcing circular plates 511. Two adjacent fan-shaped frames 512 are detachably connected. The upper and lower sides of the fan-shaped frames 512 are detachably connected with the corresponding reinforcing circular plates 511. The side of the fan-shaped frames 512 that is away from the reinforcing circular plates 511 along its own radial direction is in contact with the inner wall of the corresponding middle ring 121. The fan-shaped frames 512 are arranged one by one with the filter units 52, and the filter units 52 are installed in the corresponding fan-shaped frames 512.

[0061] The structural arrangement of the mounting round frame 51 makes it easy to disassemble and assemble the mounting round frame 51 , which facilitates the replacement and maintenance of the mounting round frame 51 .

[0062] Reference Figure 6 and Figure 7 A filter hole group 5121 is provided on the upper and lower sides of the fan-shaped frame 512, and a mounting socket 5122 is provided on the side of the fan-shaped frame 512 radially away from the reinforcing circular plate 511, and several filter hole groups 5121 are connected to the mounting socket 5122, and the filter unit 52 is plugged into the corresponding mounting socket 5122.

[0063] The opening of the installation socket 5122 and the opening of the filtering hole group 5121 on the sector frame 512 enable the flue gas to enter the installation socket 5122 through the corresponding filtering hole group 5121 and then discharge from the corresponding filtering hole group 5121. During this process, the filtering unit 52 inserted into the installation socket 5122 can filter the flue gas and reduce the solid impurities in the flue gas.

[0064] Refer to Figure 4 and Figure 6 On the outer side wall of the middle ring 121, a number of replacement openings 122 are provided. The replacement openings 122 are arranged in one-to-one correspondence with the installation sockets 5122, and the replacement openings 122 are directly opposite and communicated with the corresponding installation sockets 5122. The filtering unit 52 is inserted and matched with the corresponding replacement openings 122, and a pulling handle 521 is provided on the side of the filtering unit 52 facing away from the reinforcement circular plate 511. The pulling handle 521 is located in the corresponding replacement opening 122.

[0065] The opening of the replacement openings 122 on the middle ring 121 and the setting of the pulling handle 521 on the filtering unit 52 facilitate the disassembly, installation and replacement of the filtering unit 52 on the sector frame 512.

[0066] Refer to Figure 3 and Figure 4 On the outer side wall of the middle ring 121, a number of replacement plates 123 are further provided. The replacement plates 123 are arranged in one-to-one correspondence with the replacement openings 122. The replacement plates 123 close the corresponding replacement openings 122, and the replacement plates 123 are detachably connected to the outer side wall of the middle ring 121. In this embodiment, the replacement plates 123 are connected to the side wall of the middle ring 121 by bolts.

[0067] The setting of the replacement plates 123 is used to seal the corresponding replacement openings 122, ensure the sealing performance of the middle ring 121, and at the same time can also protect the filtering unit 52.

[0068] In this embodiment, refer to Figure 6 The filtering unit 52 includes a sector-shaped outer shell 522. A number of through holes are provided on the upper side, lower side and both sides along the circumference of the sector-shaped outer shell 522. The sector-shaped outer shell 522 is filled with a filtering material 523, and the pulling handle 521 is connected to the outer side wall of the sector-shaped outer shell 522.

[0069] Refer to Figure 6 and Figure 7 On the upper side and lower side of the installation circular frame 51, a closing control component 53 is provided. The closing control component 53 includes a number of sector plates 531. The sector frames 512 are arranged in one-to-one correspondence with the sector plates 531, and both the upper and lower sides of the sector frames 512 are connected to the corresponding sector plates 531. The sector plates 531 are provided with a closing hole group 532, and the closing hole group 532 is communicated with the corresponding filtering hole group 5121.

[0070] In this embodiment, both the closed hole group 532 and the filtering hole group 5121 are composed of a plurality of through holes.

[0071] Referring to Figure 6 and Figure 7 , the sector plate 531 is slidably connected to the corresponding sector frame 512 along its corresponding radial direction, and a closing driving member 533 is arranged on the sector frame 512. The driving end of the closing driving member 533 is connected to the sector plate 531, and the driving direction of the closing driving member 533 is arranged along the sliding direction of the sector plate 531. In this embodiment, the closing driving member 533 adopts an electromagnetic push rod or an electric push rod.

[0072] Driven by the closing driving member 533, the sector plate 531 can move on the corresponding sector frame 512, which can change the size of the communication area between the closed hole group 532 and the corresponding filtering hole group 5121, which enables the sector plate 531 to open or close the filtering hole group 5121, and can control the operation or stop of the filtering unit 52.

[0073] Referring to Figure 6 , a plurality of first holes 5131 are formed on both circumferential side walls of the sector frame 512 along its own circumferential direction, and the first holes 5131 are communicated with the corresponding mounting sockets 5122.

[0074] Referring to Figure 5 and Figure 6 , a plurality of first holes 5131 on one sector frame 512 communicate with a plurality of first holes 5131 on another adjacent sector frame 512, which forms a smoke passage hole 513 between the two sector frames 512, and the smoke passage hole 513 communicates the mounting sockets 5122 in the adjacent two sector frames 512.

[0075] Under the action of the smoke passage hole 513, the flue gas entering one sector frame 512 can flow into the adjacent another sector frame 512 along the smoke passage hole 513, which enables the flue gas to flow between different sector frames 512.

[0076] Referring to Figure 6 , communication control components 54 are arranged on both circumferentially opposite side walls of the sector frame 512 along its own circumferential direction, and the two communication control components 54 have the same structure.

[0077] Referring to Figure 6The communication control assembly 54 includes a communication plate 541, which is slidably connected to the side wall of the fan-shaped frame 512, and the sliding direction of the communication plate 541 is arranged along the radial direction corresponding to the fan-shaped frame 512. The communication plate 541 is provided with a plurality of communication holes 542, and the communication holes 542 are arranged one by one corresponding to the first holes 5131, and the communication holes 542 are connected to the corresponding first holes 5131. A communication driving member 543 is arranged on the fan-shaped frame 512, and the driving end of the communication driving member 543 is connected to the communication plate 541, and the driving direction of the communication driving member 543 is arranged along the sliding direction of the communication plate 541. In this embodiment, the communication driving member 543 adopts an electromagnetic push rod or an electric push rod.

[0078] Driven by the connecting driving member 543, the connecting plate 541 can move on the fan-shaped frame 512, which can change the size of the connecting area between the connecting hole 542 and the corresponding first hole 5131, so as to control the opening or closing of the smoke hole 513 between two adjacent fan-shaped frames 512.

[0079] Reference Figure 5 and Figure 6 Under the action of several closed control components 53, a single or multiple fan-shaped frames 512 can be selected to be opened, so that the filter unit 52 for filtering work can be freely selected. Based on this principle, the number and position of the working filter units 52 can be selected, which facilitates timely replacement of the filter units 52.

[0080] On this basis, under the cooperation of several closed control components 53 and several connected control components 54, by controlling the lower side of one fan-shaped frame 512 to be opened, the lower side of another fan-shaped frame 512 to be opened, and the two fan-shaped frames 512 are connected to each other, so that after the flue gas enters the filter mechanism 5, the flue gas will flow from one fan-shaped frame 512 to another fan-shaped frame 512, which can increase the contact time between the flue gas and the filter unit 52 and improve the filtering effect. And in this process, since the spray unit 62 sprays the alkali solution onto the filter unit 52, this can increase the contact time between the flue gas and the alkali solution, thereby improving the flue gas desulfurization effect.

[0081] In this embodiment, refer to Figure 4 and Figure 8 A mounting groove 5141 is provided on the side of the fan-shaped frame 512 radially away from the middle ring 121. The mounting groove 5141 penetrates the fan-shaped frame 512 in the vertical direction. Several mounting grooves 5141 on the fan-shaped frame 512 form a mounting hole 514, and two reinforcing circular plates 511 close the mounting hole 514. Several closed driving members 533 and several connecting driving members 543 are all located in the mounting hole 514.

[0082] The installation slots 5141 are formed on the sector frames 512, creating space between several sector frames 512 for installing the closing drive member 533 and the connecting drive member 543. Moreover, the two reinforcing circular plates 511 can also protect the closing drive member 533 and the connecting drive member 543.

[0083] Referring to Figure 4 and Figure 9 , the spraying mechanism 6 includes an installation circular plate 61 and several spraying units 62. The installation circular plate 61 is coaxially arranged inside the corresponding middle ring 121, located directly above the corresponding installation circular frame 51. The installation circular plate 61 is detachably connected to the corresponding middle ring 121. A number of ventilation holes 611 are formed on the installation circular plate 61, and the ventilation holes 611 penetrate through the installation circular plate 61. The spraying units 62 are arranged on the lower side of the installation circular plate 61, and the spraying units 62 are arranged in one-to-one correspondence with the filtering units 52, and the spraying units 62 are located directly above the corresponding filtering units 52.

[0084] Under the action of the spraying units 62, the flue gas passing through the filtering mechanism 5 can be desulfurized, and the flue gas desulfurized by the spraying units 62 will continue to rise through the ventilation holes 611.

[0085] In this embodiment, referring to Figure 4 and Figure 9 , a number of hidden slots 612 are formed on the lower side of the installation circular plate 61. The hidden slots 612 are arranged in one-to-one correspondence with the spraying units 62. The spraying units 62 are installed in the corresponding hidden slots 612, and a number of ventilation holes 611 are respectively formed at the bottoms of the a number of hidden slots 612.

[0086] Referring to Figure 4 and Figure 9 , the spraying unit 62 includes a spraying main pipe 621, several spraying sub-pipes 622 and several spray heads 623. The spraying main pipe 621 is axially arranged along the corresponding radial direction of the middle ring 121, and one end of the spraying main pipe 621 extends to the outside of the corresponding middle ring 121. Several spraying sub-pipes 622 are all communicated with the spraying main pipe 621. The several spraying sub-pipes 622 are arranged in parallel with each other. The several spraying sub-pipes 622 are sequentially and evenly spaced along the axial direction of the spraying main pipe 621. Several spray heads 623 are respectively arranged on the lower sides of the several spraying sub-pipes 622, and the spray heads 623 are communicated with the corresponding spraying sub-pipes 622. Both ends of the spraying sub-pipe 622 in the length direction are connected to the inner side walls of the corresponding hidden slots 612.

[0087] The structural arrangement of the spraying unit 62 enables each spraying unit 62 to be independently controlled, so that each spraying unit 62 can independently perform spraying.

[0088] Referring to Figure 2 and Figure 4, the flue gas desulfurization device further includes a plurality of intermediate flue duct mechanisms 7. The plurality of intermediate flue duct mechanisms 7 are located inside the cylinder body 1, and the plurality of intermediate flue duct mechanisms 7 are arranged at intervals in the vertical direction in sequence. A flue duct space is formed between the filtering mechanism 5 and the adjacent spraying mechanism 6. The intermediate flue duct mechanisms 7 are arranged in one-to-one correspondence with the flue duct space, and the intermediate flue duct mechanisms 7 are located in the corresponding flue duct space. Then, the intermediate flue duct mechanisms 7 are located between the corresponding filtering mechanism 5 and the corresponding spraying mechanism 6 in the vertical direction.

[0089] Referring to Figure 4 and Figure 9 , the intermediate flue duct mechanism 7 includes a mounting main shaft 71. The mounting main shaft 71 is coaxially arranged with the intermediate ring 121. One end of the mounting main shaft 71 is coaxially connected to the reinforcing circular plate 511, and the other end of the mounting main shaft 71 is coaxially connected to the corresponding mounting circular plate 61.

[0090] Referring to Figure 4 and Figure 9 , the intermediate flue duct mechanism 7 further includes a plurality of partition plates 72. The plurality of partition plates 72 are arranged at uniform intervals in the circumferential direction of the mounting main shaft 71 in sequence. The length direction of the partition plate 72 is arranged in the vertical direction, and one side in the length direction of the partition plate 72 is in contact with the mounting circular plate 61, and the other end is in contact with the corresponding sector frame 512. The width direction of the partition plate 72 is arranged along the corresponding radial direction of the mounting main shaft 71, and one side in the width direction of the partition plate 72 is fixedly connected to the mounting main shaft 71, and the other side is in contact with the inner side wall of the corresponding intermediate ring 121.

[0091] Referring to Figure 4 and Figure 7 , based on the structural arrangement of the mounting main shaft 71 and the plurality of partition plates 72, an independent flue duct 73 is formed between the outer side wall of the mounting main shaft 71, the inner side wall of the corresponding intermediate ring 121, and between two adjacent partition plates 72. The independent flue duct 73 is arranged in the vertical direction, and the number of the independent flue ducts 73 is the same as the number of the partition plates 72. The independent flue ducts 73 are arranged in one-to-one correspondence with the filtering units 52. One end of the independent flue duct 73 is arranged opposite to the corresponding filtering unit 52, and the other end is arranged opposite to the corresponding spraying unit 62. The hidden groove 612 is located in the corresponding independent flue duct 73, and the corresponding plurality of air permeable holes 611 are all communicated with the corresponding independent flue duct 73. The filtering hole groups 5121 on the sector frame 512 are all located in the corresponding independent flue duct 73.

[0092] Referring to Figure 4 and Figure 7, this enables the flue gas filtered by the corresponding filtering unit 52 to enter the corresponding independent flue 73, and then the corresponding spraying unit 62 realizes the desulfurization of the flue gas in the independent flue 73. Based on the arrangement of a number of independent flues 73, the flow of the flue gas between the filtering mechanism 5 and the spraying mechanism 6 becomes more orderly, avoiding the phenomenon of turbulent flow of the flue gas in the cylinder body. At the same time, when it is necessary to replace the corresponding filtering unit 52, the work of the corresponding filtering unit 52 is paused for the replacement of the filtering unit 52. At this time, other independent flues 73 can work normally, which enables the replacement of the filtering unit 52 without shutting down the flue gas desulfurization device.

[0093] In this embodiment, referring to Figure 2 and Figure 4 , a filtering mechanism 5, a spraying mechanism 6 and two intermediate flue mechanisms 7 are arranged in each intermediate ring 121. The arrangement relationship of a filtering mechanism 5, a spraying mechanism 6 and two intermediate flue mechanisms 7 from top to bottom in the intermediate ring 121 is: intermediate flue mechanism 7, spraying mechanism 6, intermediate flue mechanism 7 and filtering mechanism 5. This enables an intermediate flue mechanism 7 to exist between the filtering mechanism 5 and the adjacent spraying mechanism 6 after a number of intermediate rings 121 are connected.

[0094] In this embodiment, a maintenance port 124 is opened on the side wall of the intermediate ring 121. The maintenance ports 124 are arranged in one-to-one correspondence with the independent flues 73, and the maintenance ports 124 communicate with the corresponding independent flues 73. A number of maintenance plates 125 are further arranged on the outer side wall of the intermediate ring 121. The maintenance plates 125 are detachably connected to the outer side wall of the intermediate ring 121. The maintenance plates 125 are arranged in one-to-one correspondence with the maintenance ports 124, and the maintenance plates 125 close the corresponding maintenance ports 124. The internal situation of the intermediate ring 121 can be observed through the maintenance ports 124, which is also convenient for the maintenance and replacement of the spraying unit 62.

[0095] The implementation principle of the embodiment of the present application is as follows: When performing flue gas desulfurization, the flue gas is introduced into the bottom of the cylinder body 1 through the smoke inlet pipe 2. During the process of the flue gas rising in the cylinder body 1, the flue gas passes through the filtration of a number of filtering mechanisms 5 and the desulfurization of a number of spraying mechanisms 6 in sequence, and the flue gas after desulfurization is discharged from the smoke exhaust pipe.

[0096] When filtering the flue gas, according to actual needs, the number of filtering units 52 used on each filtering mechanism 5 can be freely selected, and the positions of the filtering units 52 used on the filtering mechanism 5 can also be freely selected.

[0097] When it is necessary to extend the retention time of the flue gas in a single filtering mechanism 5, through the cooperation of a number of closing control components 53, a corresponding filtering hole group 5121 below one filtering unit 52 is selected to be opened, a corresponding filtering hole group 5121 above another filtering unit 52 is opened, and all the remaining filtering hole groups 5121 are closed; through the cooperation of a number of communicating control components 54, the smoke passage hole 513 between the two selected filtering units 52 is opened. At this time, the flue gas can only enter the filtering mechanism 5 from below the corresponding filtering unit 52, and the flue gas needs to pass through all the filtering units 52 between the two selected filtering units 52 in sequence, and finally flow out of the filtering mechanism 5 from above the corresponding filtering unit 52. This can extend the retention time of the flue gas in the filtering mechanism 5 and improve the filtering effect.

[0098] The embodiments of this specific implementation manner are all preferred embodiments of this application, and do not limit the protection scope of this application accordingly. The same components are denoted by the same reference numerals. Therefore, all equivalent changes made according to the structure, shape, and principle of this application should be covered within the protection scope of this application.

Claims

1. A flue gas desulfurization device, characterized in that: include: A cylinder (1), the outer side of the cylinder (1) being connected to a smoke inlet pipe (2), the top of the cylinder (1) being connected to a smoke outlet pipe (3), a filtering mechanism (5) and a spraying mechanism (6) being arranged inside the cylinder (1), the spraying mechanism (6), the filtering mechanism (5) and the smoke inlet pipe (2) being arranged in sequence from top to bottom; The filtering mechanism (5) comprises a mounting frame (51) and a plurality of filtering units (52); the mounting frame (51) is coaxially arranged in the cylinder (1); the mounting frame (51) is connected to the inner wall of the cylinder (1); a plurality of mounting sockets (5122) are provided on the outer side of the mounting frame (51); the filtering units (52) and the mounting sockets (5122) are arranged in a one-to-one correspondence; the filtering units (52) are plugged into and matched with the corresponding mounting sockets (5122); A plurality of filter hole groups (5121) are provided through the upper side of the mounting circular frame (51), the filter hole groups (5121) are arranged in one-to-one correspondence with the mounting sockets (5122), and the filter hole groups (5121) are in communication with the corresponding mounting sockets (5122); A plurality of replacement ports (122) are provided on the outside of the cylinder (1), the replacement ports (122) and the installation sockets (5122) are arranged in a one-to-one correspondence, the replacement ports (122) are directly connected to the corresponding installation sockets (5122), and the filter units (52) are plugged into and matched with the corresponding replacement ports (122); The upper and lower sides of the mounting circular frame (51) are both provided with a closed control assembly (53), the closed control assembly (53) comprising a plurality of fan-shaped plates (531), the fan-shaped plates (531) being slidably connected to the upper side or the lower side of the mounting circular frame (51), the fan-shaped plates (531) being arranged in a one-to-one correspondence with the filter hole groups (5121), and the fan-shaped plates (531) close the corresponding filter hole groups (5121); A plurality of closed driving members (533) are arranged on the mounting frame (51), the closed driving members (533) being arranged in one-to-one correspondence with the fan-shaped plates (531), the driving ends of the closed driving members (533) being connected to the corresponding fan-shaped plates (531), and the closed driving members (533) being used to drive the fan-shaped plates (531) to slide open or close the corresponding filter hole groups (5121).

2. A flue gas desulfurization device according to claim 1, characterized in that: A smoke vent (513) is provided on the inner side wall of the installation socket (5122), and the smoke vent (513) is connected to two adjacent installation sockets (5122); A plurality of communication control components (54) are arranged on the mounting circular frame (51), the communication control components (54) being arranged in a one-to-one correspondence with the smoke vent holes (513), and the communication control components (54) being used to control the opening and closing of the corresponding smoke vent holes (513).

3. A flue gas desulfurization device according to claim 2, characterized in that: A plurality of the filtering mechanisms (5) and the spraying mechanisms (6) are provided, the filtering mechanisms (5) and the spraying mechanisms (6) are provided in one-to-one correspondence, the spraying mechanisms (6) are located directly above the corresponding filtering mechanisms (5), and a plurality of the filtering mechanisms (5) and a plurality of the spraying mechanisms (6) are arranged alternately in sequence along the vertical direction.

4. A flue gas desulfurization device according to claim 3, characterized in that: The cylinder (1) comprises a base (11), an upper cover (13) and a plurality of intermediate rings (121); the plurality of intermediate rings (121) are arranged in sequence along their own axis; the intermediate rings (121) are located between the upper cover (13) and the base (11) along their own axial direction; the base (11) and adjacent intermediate rings (121), the upper cover (13) and adjacent intermediate rings (121), and two adjacent intermediate rings (121) are all detachably connected; the smoke inlet pipe (2) is connected to the base (11); and the smoke outlet pipe (3) is connected to the upper cover (13); The intermediate ring (121) and the filtering mechanism (5) are arranged in a one-to-one correspondence; the filtering mechanism (5) and the corresponding spraying mechanism (6) are both located in the corresponding intermediate ring (121); and the filtering mechanism (5) and the corresponding spraying mechanism (6) are both connected to the corresponding intermediate ring (121).

5. A flue gas desulfurization device according to claim 3, characterized in that: An intermediate flue mechanism (7) is provided between the filtering mechanism (5) and the adjacent spraying mechanism (6); The intermediate flue mechanism (7) comprises a mounting main shaft (71) and a plurality of partitions (72), wherein the mounting main shaft (71) is located in the cylinder (1), the mounting main shaft (71) is coaxially arranged with the cylinder (1), the plurality of partitions (72) are arranged on the side wall of the mounting main shaft (71), the plurality of partitions (72) are arranged in sequence at intervals along the circumference of the mounting main shaft (71), an outer side wall of the mounting main shaft (71), an inner side wall of the cylinder (1) and two adjacent partitions (72) form independent flues (73), and the plurality of independent flues (73) are arranged independently of each other; The spray mechanism (6) comprises a plurality of spray units (62), the spray units (62) being arranged in one-to-one correspondence with the filter units (52), and the spray units (62) and the corresponding filter units (52) being arranged facing each other in the vertical direction; The independent flue (73) and the filter unit (52) are arranged in a one-to-one correspondence, the corresponding filter hole group (5121) is located in the corresponding independent flue (73), and the corresponding spray unit (62) is located in the independent flue (73).

6. A flue gas desulfurization device according to claim 5, characterized in that: The outer wall of the cylinder (1) is provided with a plurality of maintenance openings (124), the maintenance openings (124) being arranged in one-to-one correspondence with the independent flues (73), and the maintenance openings (124) being in communication with the corresponding independent flues (73); A plurality of maintenance plates (125) are provided on the outer wall of the cylinder (1); the maintenance plates (125) are detachably connected to the outer wall of the cylinder (1); the maintenance plates (125) are arranged in one-to-one correspondence with the maintenance openings (124); and the maintenance plates (125) seal the corresponding maintenance openings (124).

7. A flue gas desulfurization device according to claim 1, characterized in that: The mounting circular frame (51) comprises a plurality of sector-shaped frames (512), wherein the plurality of sector-shaped frames (512) are sequentially arranged along the circumference of the cylinder (1), and two adjacent sector-shaped frames (512) are detachably connected; The fan-shaped frame (512) and the filter unit (52) are arranged in a one-to-one correspondence, the installation socket (5122) is provided on the outer side wall of the corresponding fan-shaped frame (512), and the corresponding filter hole group (5121) is provided on the corresponding fan-shaped frame (512), the fan-shaped plate (531) is arranged on the upper side or the lower side of the fan-shaped frame (512), the fan-shaped plate (531) is slidably connected to the fan-shaped frame (512), and the closed driving member (533) is provided on the corresponding fan-shaped frame (512).

8. A flue gas desulfurization device according to claim 1, characterized in that: A plurality of replacement plates (123) are arranged on the outside of the cylinder (1); the replacement plates (123) are detachably connected to the outside of the cylinder (1); the replacement plates (123) are arranged in one-to-one correspondence with the replacement openings (122), and the replacement plates (123) seal the corresponding replacement openings (122).

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