Flue gas desulfurization device

Abstract

The invention relates to the technical field of flue gas dry desulfurization, in particular to a flue gas desulfurization device which comprises a treatment chamber and a gas flow pipeline for introducing flue gas into the treatment chamber, the gas flow pipeline is shunted to a straight discharge pipe and a branch discharge pipe from an inlet end, a grid for separating dust is arranged at the intersection, and the branch discharge pipe discharges gas from bottom to top; the axis of the separating and bearing mechanism is a gas explosion channel formed by a uniparted hyperboloid. The desulfurization agent is arranged at the front position of the activated carbon treatment device, the pressure of subsequent desulfurization is reduced through desulfurization, the desulfurization agent can react sulfide with great efficiency, subsequent activated carbon can achieve third-time filtration, the floating ring is arranged in the waist groove in a sleeved mode, the activated carbon rod is arranged on the floating ring in a sleeved mode, and therefore the desulfurization effect is improved. The activated carbon rod moves up and down in the waist groove, so that attached dust can be vibrated down, the dust attached to the activated carbon rod is prevented from being accumulated, the flowing speed of purified airflow is prevented from being influenced, the dust can be cleaned on line, and the desulfurization quality is improved.

Description

Technical Field

[0001] This invention relates to the field of dry flue gas desulfurization technology, and particularly to a flue gas desulfurization device. Background Technology

[0002] There are three types of flue gas desulfurization: wet, semi-dry, and dry. The wet method utilizes a liquid absorbent (usually an alkaline solution or slurry) to fully contact the flue gas containing SO2 in the absorption tower, and absorbs and removes SO2 from the flue gas through physical dissolution and chemical reaction.

[0003] Compared to wet desulfurization, dry desulfurization is more economical and does not require post-treatment of wastewater. However, in the existing dry desulfurization process, the treatment of sulfur-containing dust in flue gas is mainly done through filtration, bag filter dust removal, and adsorption filtration. The flue gas has a single path channel in the above methods, which has the following problems. The content in the flue gas is not constant, so it cannot be cleaned regularly. Instead, the problem of filter plate blockage is determined by monitoring the difference between upstream and downstream flow rates. This method requires irregular maintenance. Another issue is the load on the filter device during the dust separation process. The main reason is that even if the flue gas passes through multiple filtration stages, there will still be a load at one of the stages. At this time, it is necessary to shut down for maintenance, which is difficult and increases the replacement cost accordingly.

[0004] In response to the aforementioned situation, the inventors devised a solution to the aforementioned technical problems. Summary of the Invention

[0005] To achieve the above objectives, the main technical solution adopted by the present invention includes: a flue gas desulfurization device, comprising a treatment chamber and an airflow duct for introducing flue gas into the treatment chamber, wherein the airflow duct is split from the inlet end to a straight discharge pipe and a branch discharge pipe, and a grid for separating dust is provided at the intersection, and the branch discharge pipe discharges gas from bottom to top; The separation and receiving mechanism has an air explosion channel formed by a single-leaf hyperboloid at its axis. The top of the separation and receiving mechanism is provided with an openable and closable discharge hole around its perimeter, as well as a dust removal mechanism that communicates with the inner cavity of the separation and receiving mechanism. A floating cleaning filter rod assembly is fixedly installed in the processing chamber. The floating cleaning filter rod assembly includes a multi-channel mounting base and a plurality of filter rod isolators installed on the multi-channel mounting base. The elastic filter support is used to isolate the dust discharged into the straight pipe and to support and fix the filter rod isolator.

[0006] Furthermore, the distribution pipe is equipped with solenoid valves at both the bottom of the grid and the end connecting to the processing chamber, and a pressurizing air pump is installed in the middle section of the distribution pipe.

[0007] Furthermore, the dust removal mechanism includes a powerful suction device and an input pipe disposed at the air inlet of the powerful suction device and passing through the processing chamber. A rotating mechanism driven by piston displacement is disposed inside the input pipe, and a gear is disposed at one end of the rotating mechanism.

[0008] Furthermore, the separating receiving mechanism also includes a sink plate sleeve, a rotating plate is rotatably disposed inside the sink plate sleeve, and a toothed ring is disposed at the bottom of the rotating plate, the toothed ring meshing with the gear; The separation receiving mechanism has an annular recessed portion formed by the transition from the central gas explosion channel to the edge.

[0009] Furthermore, the rotating mechanism includes a negative pressure piston, a lead screw connected to one side of the negative pressure piston, a ball sleeve provided on the lead screw, and a rotating bushing rotatably disposed at the outer end of the input pipe connected to the ball sleeve, the rotating bushing being fixed to the gear.

[0010] Furthermore, the filter rod isolator includes a floating isolation shell, a pre-weakening mechanism is provided in the top cavity of the floating isolation shell, an adsorption assembly is provided in the lower cavity of the floating isolation shell, a purification channel tube is provided above the floating isolation shell and extends into the interior of the floating isolation shell, the purification channel tube is located in the middle of the inner cavity of the pre-weakening mechanism and the adsorption assembly, and the adsorption assembly moves up and down on the purification channel tube, and a release device is elastically provided in an independent cavity at the bottom of the floating isolation shell.

[0011] Furthermore, it also includes an annular external channel through which the airflow introduced from the bottom of the floating isolation housing passes, and after being processed in the pre-weakening mechanism, it enters the adsorption assembly through the internal channel and is discharged from the purification channel pipe.

[0012] Furthermore, the pre-weakening mechanism includes a filter sleeve attached to the inner wall of the floating isolation shell, the filter sleeve having oblique holes, an annular filter cloth blocking the oblique holes being provided on the inner wall of the floating isolation shell, and a filter layer with a pore size smaller than the annular filter cloth being provided on another inner wall of the inner cavity of the floating isolation shell, with desulfurizing agent being provided on the filter layer from top to bottom outwards.

[0013] Furthermore, the adsorption assembly includes an isolation hood, a waist groove is provided inside the isolation hood, a floating ring is sleeved inside the waist groove, an activated carbon rod is sleeved on the floating ring, and an annular mesh for introducing airflow is opened in the top cavity of the isolation hood. The diameter of the activated carbon rod is smaller than the diameter of the isolation hood.

[0014] Furthermore, the release device is connected to the isolation cover via a return spring, and the release device is also connected to the elastic filter support.

[0015] This invention has at least the following beneficial effects: 1. The flue gas entering the treatment chamber is diverted. The flue gas is horizontally discharged into the middle of the treatment chamber. The upstream of the diversion pipe is connected to the straight discharge pipe via an S-shaped bend. The welded joint of the connection port has a circumferential bevel that slopes upwards towards the flue gas. A filter screen is installed here. In this way, the airflow carrying a small amount of dust through the diversion pipe enters the treatment chamber through the straight discharge pipe. The flue gas entering through the straight discharge pipe first gathers in the middle of the treatment chamber and is in a suspended state. When the airflow from below passes through the diversion pipe and discharges the gas upwards, the airflow can push the suspended dust upwards and discharge it.

[0016] 2. After pressurizing the airflow, the high-speed, high-pressure airflow blows the elastic filter screen support, intermittently increasing the up-and-down floating of the filter rod isolator. Before turning on the pressurizing air pump, the two solenoid valves are kept closed. At this time, the internal air pressure increases. Then, the solenoid valve located at the end of the treatment chamber is opened. At this time, the upward airflow generates a large impact effect, which acts on the horizontally entering flue gas, dispersing the sulfur-containing dust. The upward airflow then disturbs it, which can generate a downward airflow around the treatment chamber. At this time, a blind zone will be formed on the top outer ring of the separation receiving mechanism, thus ensuring that the falling dust is collected and easy to clean later.

[0017] 3. By installing a desulfurizing agent at the front end of the activated carbon treatment device, the pressure of subsequent desulfurization is reduced through desulfurization. The desulfurizing agent can react with sulfides with great efficiency, allowing the activated carbon to perform a third filtration. In addition, a floating ring is installed in the waist groove, and activated carbon rods are installed on the floating ring. The activated carbon rods move up and down in the waist groove, which can shake off the attached dust. This prevents the dust attached to the activated carbon rods from accumulating and affecting the flow speed of the purified airflow. This allows for online dust cleaning and improves the quality of desulfurization. Attached Figure Description

[0018] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings: Figure 1 This is a front view of the present invention; Figure 2 This is a sectional view of the side view of the present invention; Figure 3 This is a schematic diagram of the separating receiving mechanism in this invention; Figure 4 This is a cross-sectional view of the detachable receiving mechanism in this invention; Figure 5 This is a schematic diagram of the rotating mechanism in this invention; Figure 6 This is a partial cross-sectional view of the filter rod isolator in this invention; Figure 7 This is a cross-sectional view of the filter rod isolator in this invention.

[0019] In the diagram: 1. Processing chamber; 2. Airflow duct; 21. Straight discharge pipe; 22. Branch discharge pipe; 23. Solenoid valve; 24. Pressurized air pump; 3. Separation and receiving mechanism; 31. Powerful suction device; 32. Input pipe; 321. Negative pressure piston; 322. Lead screw; 323. Rotating bushing; 33. Gear; 34. Air explosion channel; 35. Gear ring; 36. Rotating plate; 37. Sinking plate sleeve; 38. Annular recessed part; 4. Elastic filter screen support; 5. Floating cleaning filter rod assembly; 51. Multi-channel fixing seat. 6. Filter rod isolator; 61. Floating isolation shell; 62. Pre-weakening mechanism; 621. Filter sleeve; 622. Annular filter cloth; 623. Desulfurizing agent; 624. Filter layer; 63. Adsorption assembly; 631. Isolation cover; 632. Floating ring; 633. Activated carbon rod; 634. Annular mesh; 635. Rubber funnel; 636. Resonance rod; 637. Transfer space; 64. Purification channel pipe; 65. Detachment device; 651. Reset spring; 7. Internal channel; 8. Annular external channel. Detailed Implementation

[0020] The following will describe in detail the implementation of this application with reference to the accompanying drawings and embodiments, so that the implementation process of how this application uses technical means to solve technical problems and achieve technical effects can be fully understood and implemented accordingly.

[0021] To better understand the flue gas desulfurization device provided in this embodiment, a brief description of existing flue gas desulfurization devices is given first. In existing flue gas desulfurization devices, when flue gas enters the treatment system, the dust in the flue gas is first treated, including but not limited to spray dust removal, water washing dust removal, and filtration dust removal. These methods generally only have a single flue gas channel. When the flue gas enters the filtration section, the dust needs to be further treated after isolation. Moreover, the dust content in the flue gas is not constant, and the dust accumulation points are not uniformly distributed, resulting in dust load in the channel. Even when using activated carbon adsorption, there is still a load problem, leading to extremely low flue gas desulfurization efficiency of the entire device. In contrast, the applicant, based on practical experience in the field, has proposed a device that uses front-end air diversion followed by intermittent direct injection to forcibly disorder the dust passing through the tank. As a result, the filtration section, under the direct impact of the airflow, can float and remove dust in the direction of airflow, reducing the load of the entire desulfurization area in real time, effectively separating the attached dust, improving adsorption capacity, and thus improving desulfurization quality.

[0022] like Figure 1-7As shown, the present invention provides a flue gas desulfurization device, including a treatment chamber 1 and an airflow duct 2 for introducing flue gas into the treatment chamber 1. The airflow duct 2 is characterized in that the airflow duct 2 is split from the inlet end to a straight discharge pipe 21 and a branch discharge pipe 22, and a grid for separating dust is provided at the intersection. The branch discharge pipe 22 discharges gas from bottom to top. Solenoid valves 23 are installed at both the bottom of the grid and the end connecting to the processing chamber 1 of the branch pipe 22, and a pressurizing air pump 24 is installed in the middle section of the branch pipe 22.

[0023] The flue gas entering the treatment chamber 1 is diverted. The flue gas is horizontally discharged into the middle of the inner cavity of the treatment chamber 1. The upstream of the diversion pipe 22 is connected to the straight discharge pipe 21 by an S-shaped bend. The welded position of the connection port is reserved with a circumferential bevel that slopes upward towards the flue gas. A filter screen is installed here. In this way, the airflow carrying a small amount of dust through the diversion pipe 22 enters the treatment chamber 1 through the straight discharge pipe 21. Thus, the flue gas entering through the straight discharge pipe 21 first gathers in the middle cavity of the treatment chamber 1 and is in a suspended state. When the airflow below passes through the diversion pipe 22 and discharges the gas from bottom to top, the airflow can push the suspended dust upward and discharge it. During the above process, it is important to understand that a circumferential inclined surface is reserved at the welding position of the connecting port, which is inclined towards the upstream of the flue gas. A filter screen is installed here. When the incoming airflow passes through the inclined surface, the filter screen on the inclined surface will block the dust clumps. In this way, when the horizontally conveyed airflow passes through, it can blow away the trapped dust, so that the airflow entering the interior carries less dust. The above design improvements can be adjusted according to actual requirements; The first design method is to use the original flue gas, filter it, and discharge it upwards. In this case, the solenoid valve 23 located in the branch pipe 22 can be omitted. The diameter is reduced at this point to accelerate the airflow and discharge it upwards. This effect is not constant and needs to be pressurized at the front end. The second design method: When processing this product, the solenoid valves 23 of the distribution pipe 22 are set at both ends. The purpose of setting the solenoid valves 23 is to be divided into the following working states. In the first state, the solenoid valves 23 at both ends are kept open, which is used in the scenario of the first design method to introduce the original airflow for operation. At this time, the pressurizing air pump 24 is in the closed state. In the second state, in order to improve the online cleaning effect during floating dust removal, that is, to intermittently increase the formation of the filter rod isolator 6 floating up and down, before opening the pressurizing air pump 24, the two solenoid valves 23 are kept in the closed state. At this time, the internal air pressure increases, and then the solenoid valve 23 located at the end of the treatment chamber 1 is opened. At this time, the airflow upward generates a large impact effect, which acts on the horizontally entering flue gas, disperses the sulfur-containing dust, and then the upward airflow disturbs it. This can generate a downward airflow around the treatment chamber 1. At this time, a blind zone will be formed on the top outer ring of the separation receiving mechanism 3, which ensures that the falling dust is collected and easy to clean later. In addition to the above design, when designing this scheme, there are other ways to allow the airflow in the distribution pipe 22 to enter the processing chamber 1 and achieve acceleration.

[0024] like Figures 2-4 The separation and receiving mechanism 3 shown has an air explosion channel 34 formed by a single-leaf hyperboloid at its axis. The top of the separation and receiving mechanism 3 is provided with an openable and closable discharge hole around its perimeter, as well as a dust removal mechanism that communicates with the inner cavity of the separation and receiving mechanism 3. The separation receiving mechanism 3 has the following advantages: First, it separates the flue gas discharged into the straight pipe 21 from the flue gas discharged upward from the branch pipe 22. In this way, there is more flue gas in the straight pipe 21. After being turbulent above the separation receiving mechanism 3, most of the dust falls from the inner wall of the treatment chamber 1 onto the surface of the separation receiving mechanism 3, and some dust also falls onto the end of the branch pipe 22. This helps to concentrate dust in the annular recess 38 formed at the top of the separating receiving mechanism 3. When a lot of dust accumulates in the annular recess 38, in order to clean the dust online, a discharge hole that can be opened or closed at a time is provided. There are several discharge holes, and the spacing is set at the position of the annular recess 38. Specifically, they are set in the rotating plate 36 and the air explosion channel 34. The rotating plate 36 can rotate in the air explosion channel 34, so that the two discharge holes can overlap or be staggered. When they overlap, the two discharge holes form a channel. When they are closed, they form an isolation state.

[0025] like Figure 4 The dust removal mechanism shown includes a powerful suction device 31 and an input pipe 32 installed at the air inlet of the powerful suction device 31 and passing through the treatment chamber 1. A rotating mechanism driven by piston displacement is installed inside the input pipe 32, and a gear 33 is installed at one end of the rotating mechanism.

[0026] The separating receiving mechanism 3 also includes a recessed sleeve 37, a rotating plate 36 is rotatably arranged inside the recessed sleeve 37, and a toothed ring 35 is provided at the bottom of the rotating plate 36, which meshes with the gear 33. The powerful suction device 31 generates negative pressure, causing the piston to move. At this time, the rotating mechanism can rotate, which in turn causes the gear 33 to rotate the gear ring 35. Simultaneously, the rotating plate 36 rotates at a certain angle, so that the two discharge holes can overlap. When they overlap, the two discharge holes form a channel, which can forcefully remove the dust inside. It should be noted that after the suction is completed, the two discharge holes are staggered, and the channel formed by the two discharge holes is closed. In addition, it should be mentioned that the piston displacement can be reset, including but not limited to spring reset, or the piston can be reset after the backflow airflow, forming a state where the input pipe 32 is closed after contact with it.

[0027] In implementing the above embodiments, one of the rotating mechanisms includes a negative pressure piston 321 and a lead screw 322 connected to one side of the negative pressure piston 321. A ball sleeve is provided on the lead screw 322, and a rotating bushing 323 rotatably disposed at the outer end of the input pipe 32 is connected to the ball sleeve. The rotating bushing 323 is fixed to the gear 33.

[0028] When the negative pressure piston 321 moves from the position of the variable diameter input pipe 32 to the position of the large diameter input pipe 32, the lead screw 322 moves. At this time, the rotating sleeve 323 set at the position of the output pipe 32 rotates, and the gear 33 can rotate on the rotating sleeve.

[0029] Of course, this method relies on negative pressure as suction to move the negative pressure piston 321 to achieve opening. In the specific implementation process, a timer can be set to start the rotary motor to drive the discharge hole to open. In this case, no rotary mechanism is set. Of course, there are other opening methods, which are not set.

[0030] In the above embodiments, it is important to note that the separation receiving mechanism 3 has an annular recessed portion 38 formed from the central gas explosion channel 34 to the edge transition portion.

[0031] Furthermore, the air explosion channel 34 is a single-leaf hyperboloid shape, which allows the air pressure generated below to accelerate as it passes through the air explosion channel 34. The airflow then blows vertically upwards along the axial direction of the air explosion channel 34. When the high-pressure, high-speed airflow passes through the elastic filter support 4, it first blows the exhaust gas upwards to the bottom of the elastic filter support 4. The elastic filter support 4 then performs the first stage of filtration in the entire process. The airflow impact on the elastic filter support 4 disperses the exhaust gas to the bottom surface of the elastic filter support 4, increasing the overall airflow velocity. This plays a crucial role in subsequent filtration. Additionally, the airflow passing through the air explosion channel 34 contacts the center of the elastic filter support 4, causing the blocked airflow to split outwards from the center of the elastic filter support 4. This split airflow evenly distributes the exhaust gas to the inner wall of the treatment chamber 1, helping to concentrate dust at the annular recessed portion 38.

[0032] Reference Figure 4 The elastic filter support 4 shown is used to isolate the dust discharged into the straight pipe 21 and to support and fix the filter rod isolator 6.

[0033] The elastic filter support 4 can be a filter assembly formed by pressing a circular elastic silicone mesh with a filter. The circular elastic silicone mesh has several circular holes, the filter is placed in the circular holes, and the filter is kept in a relaxed state. When airflow passes through, the filter's mobility can be improved. In addition to the above-mentioned configuration, the elastic filter support 4 can also be provided with a spring in the axial direction. In this case, the plate of the elastic filter support 4 can be a metal mesh plate.

[0034] The floating cleaning filter rod assembly 5 is fixedly installed in the treatment chamber 1. The floating cleaning filter rod assembly 5 includes a multi-channel fixing seat 51 and multiple filter rod isolators 6 installed on the multi-channel fixing seat 51. The filter rod isolator 6 is a cylindrical body with an air inlet at the bottom, which is installed in the multi-channel fixing seat 51 and can slide up and down in the multi-channel fixing seat 51.

[0035] like Figure 6 and Figure 7 The filter rod isolator 6 shown includes a floating isolation housing 61. A pre-weakening mechanism 62 is provided in the top cavity of the floating isolation housing 61. An adsorption component 63 is provided in the lower cavity of the floating isolation housing 61. A purification channel tube 64 is provided above the floating isolation housing 61 and extends into the interior of the floating isolation housing 61. The purification channel tube 64 is located in the middle of the inner cavity of the pre-weakening mechanism 62 and the adsorption component 63, and the adsorption component 63 moves up and down on the purification channel tube 64. A release device 65 is elastically provided in an independent cavity at the bottom of the floating isolation housing 61.

[0036] The bottom of the floating isolation housing 61 is provided with a gas inlet channel. The flue gas passing through the elastic filter support 4 enters the annular external channel 8 from the floating isolation housing 61, and then enters the pre-weakening mechanism 62 from the annular external channel 8. After the pre-weakening mechanism 62 reacts with the sulfides in the flue gas, the treated gas can enter the central shaft cavity of the pre-weakening mechanism 62 from the periphery, and then enter the adsorption assembly 63 from the central shaft cavity of the pre-weakening mechanism 62, and contact the activated carbon inside the adsorption assembly 63 to complete the desulfurization treatment. At this time, the purified flue gas enters the purification channel pipe 64 from the space above the separator 65, and then is discharged from the purification channel pipe 64.

[0037] It is important to understand that the complete flue gas flow path is as follows, which also includes the annular external channel 8 through which the airflow introduced from the bottom of the floating isolation housing 61 passes, and after being processed in the pre-weakening mechanism 62, it enters the adsorption assembly 63 through the internal channel 7 and is discharged from the purification channel pipe 64.

[0038] It is important to note that the pre-weakening mechanism 62 includes a filter sleeve 621 that is attached to the inner wall of the floating isolation housing 61. The filter sleeve 621 is provided with oblique holes. An annular filter cloth 622 that blocks the oblique holes is provided on the inner wall of the floating isolation housing 61. A filter layer 624 with a pore size smaller than that of the annular filter cloth 622 is provided on the other inner wall of the floating isolation housing 61. A desulfurizing agent 623 is provided on the filter layer 624 from top to bottom and outward.

[0039] A special desulfurizing agent 623, including but not limited to Fe2O3 or ZnO, or one or more of them, is added in series before activated carbon. It preferentially reacts with H2S to form stable Fe2S3 / ZnS, which greatly reduces the burden on activated carbon. Alternatively, a desulfurizing agent that can be regenerated by air, such as some iron oxide-based materials, can be used to extend the overall service life. A high sulfur capacity complex iron desulfurizing agent can also be used. This method does not generate water. In the specific reaction process, those skilled in the art can make adaptive adjustments according to the reaction conditions.

[0040] The specific process is explained as follows: the flue gas filtered by the first stage enters through the inclined holes, then passes through the annular filter cloth 622, and then through the desulfurizing agent 623. After that, the flue gas passes through the filter layer 624. In this way, the sulfides in the flue gas are adsorbed and reacted by the desulfurizing agent 623. It should be noted that the desulfurizing agent 623 consists of multiple small desulfurizing agent 623 rods that are inclined towards the inclined holes. Specifically, when processing the desulfurizing agent 623, multiple desulfurizing agents 623 are tilted and then foamed to form a whole. This allows the generated water to be adsorbed. Of course, during the desulfurization process, the airflow temperature can be increased to improve the evaporation efficiency and reduce the accumulation of internal moisture.

[0041] Continue to refer to Figure 6 and Figure 7 The adsorption assembly 63 shown includes an isolation cover 631, a waist groove is provided inside the isolation cover 631, a floating ring 632 is sleeved inside the waist groove, an activated carbon rod 633 is sleeved on the floating ring 632, and an annular mesh 634 for introducing airflow is opened in the top cavity of the isolation cover 631. The diameter of the activated carbon rod 633 is smaller than the diameter of the isolation cover 631.

[0042] After the flue gas enters the transfer space 637 from the annular grid 634, it is dispersed in the annular cavity between the isolation hood 631 and the activated carbon rod 633. After passing through the activated carbon rod 633, the flue gas is discharged into the purification channel pipe 64 from the space above the separator 65.

[0043] A rubber funnel 635 is provided below the inner cavity of the isolation cover 631, and a resonant rod 636 is provided below the rubber funnel 635. A dust outlet is provided at the position of the rubber funnel 635, which is located in the middle of the separator 65. Since the rubber funnel 635 is relatively soft, the vibration generated when it floats up and down can be transmitted better, and the dust attached to the surface of the activated carbon rod 633 can be discharged through the resonant rod 636.

[0044] As the elastic filter support 4 swings up and down, the release device 65 connected to the top of the elastic filter support 4 is in a retracted state. The elastic filter support 4 can drive multiple filter rod isolators 6 to move up and down. Since a floating ring 632 is sleeved in the waist groove, and an activated carbon rod 633 is sleeved on the floating ring 632, the activated carbon rod 633 moves up and down in the waist groove. This can shake off the attached dust, thus preventing the dust attached to the activated carbon rod 633 from accumulating and affecting the speed of the purified airflow. This can clean the dust online and improve the quality of desulfurization.

[0045] The disconnector 65 is connected to the isolation cover 631 via a return spring 651, and the disconnector 65 is also connected to the elastic filter support 4.

[0046] It should be noted that the separator 65 is a structure that is fixed together by two circular plates. Dust accumulates in the space between the two circular plates. The separator 65 is separated from the isolation cover 631 by the return spring 651. At this time, the separator 65 is separated from the floating isolation shell 61, and the accumulated dust can fall from the mesh on the surface of the elastic filter support 4.

[0047] If certain terms are used in the specification and claims to refer to specific components, those skilled in the art will understand that hardware manufacturers may use different names to refer to the same component. This specification and claims do not distinguish components based on differences in name, but rather on differences in function. The term "comprising" as used throughout the specification and claims is an open-ended term and should be interpreted as "comprising but not limited to." "Approximately" means that within an acceptable margin of error, those skilled in the art can solve the technical problem and substantially achieve the technical effect within a certain margin of error.

[0048] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a product or system comprising a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a product or system. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the product or system that includes that element.

[0049] The foregoing description illustrates and describes several preferred embodiments of the present invention. However, as previously stated, it should be understood that the present invention is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the inventive concept by means of the foregoing teachings or techniques or knowledge in related fields. Any modifications and variations made by those skilled in the art that do not depart from the spirit and scope of the present invention should be within the protection scope of the appended claims.

Claims

1. A flue gas desulfurization device, comprising a treatment chamber (1) and an airflow duct (2) for introducing flue gas into the treatment chamber (1), characterized in that, The airflow duct (2) is split from the inlet end to the straight pipe (21) and the branch pipe (22), and a grid for separating dust is provided at the intersection. The branch pipe (22) discharges gas from bottom to top. The separation receiving mechanism (3) has an air explosion channel (34) formed by a single-leaf hyperboloid at its axis. The top of the separation receiving mechanism (3) is provided with an openable discharge hole around its perimeter, as well as a dust removal mechanism that communicates with the inner cavity of the separation receiving mechanism (3). The floating cleaning filter rod assembly (5) is fixedly installed in the processing chamber (1). The floating cleaning filter rod assembly (5) includes a multi-channel fixing seat (51) and a plurality of filter rod isolators (6) installed on the multi-channel fixing seat (51). The elastic filter support (4) is used to isolate the dust discharged by the straight pipe (21) and to support and fix the filter rod isolator (6).

2. The flue gas desulfurization device according to claim 1, characterized in that: The branch pipe (22) is equipped with a solenoid valve (23) at both the bottom of the grid and the end connected to the processing chamber (1), and a pressurizing air pump (24) is installed in the middle section of the branch pipe (22).

3. The flue gas desulfurization device according to claim 2, characterized in that: The dust removal mechanism includes a powerful suction device (31) and an input pipe (32) disposed at the air inlet of the powerful suction device (31) and passing through the processing chamber (1). The input pipe (32) is provided with a rotating mechanism driven by piston displacement, and a gear (33) is provided at one end of the rotating mechanism.

4. The flue gas desulfurization device according to claim 3, characterized in that: The separation receiving mechanism (3) further includes a sink plate sleeve (37), a rotating plate (36) is rotatably arranged inside the sink plate sleeve (37), and a toothed ring (35) is provided at the bottom of the rotating plate (36), which meshes with the gear (33); The separation receiving mechanism (3) has an annular recess (38) formed from the central gas explosion channel (34) to the edge transition portion.

5. A flue gas desulfurization device according to claim 4, characterized in that: The rotating mechanism includes a negative pressure piston (321) and a lead screw (322) connected to one side of the negative pressure piston (321). A ball sleeve is provided on the lead screw (322), and a rotating bushing (323) rotatably disposed at the outer end of the input pipe (32) is connected to the ball sleeve. The rotating bushing (323) is fixed to the gear (33).

6. The flue gas desulfurization device according to claim 1, characterized in that: The filter rod isolator (6) includes a floating isolation shell (61), a pre-weakening mechanism (62) is provided in the top cavity of the floating isolation shell (61), an adsorption assembly (63) is provided in the lower cavity of the floating isolation shell (61), a purification channel tube (64) is provided above the floating isolation shell (61) and extends into the interior of the floating isolation shell (61), the purification channel tube (64) is located in the middle of the inner cavity of the pre-weakening mechanism (62) and the adsorption assembly (63), and the adsorption assembly (63) moves up and down on the purification channel tube (64), and a release device (65) is elastically provided in the independent cavity at the bottom of the floating isolation shell (61).

7. A flue gas desulfurization device according to claim 6, characterized in that: It also includes an annular external channel (8) through which the airflow introduced from the bottom of the floating isolation housing (61) passes, and after being processed in the pre-weakening mechanism (62), it enters the adsorption assembly (63) through the internal channel (7) and is discharged from the purification channel pipe (64).

8. A flue gas desulfurization device according to claim 6, characterized in that: The pre-weakening mechanism (62) includes a filter sleeve (621) attached to the inner wall of the floating isolation shell (61). The filter sleeve (621) is provided with oblique holes. An annular filter cloth (622) that blocks the oblique holes is provided on the inner wall of the floating isolation shell (61). A filter layer (624) with a pore size smaller than that of the annular filter cloth (622) is provided on the other inner wall of the floating isolation shell (61). A desulfurizing agent (623) is provided on the filter layer (624) from top to bottom and outward.

9. A flue gas desulfurization device according to claim 6, characterized in that: The adsorption assembly (63) includes an isolation cover (631), a waist groove is provided inside the isolation cover (631), a floating ring (632) is sleeved inside the waist groove, an activated carbon rod (633) is sleeved on the floating ring (632), and an annular mesh (634) for introducing airflow is opened in the top cavity of the isolation cover (631). The diameter of the activated carbon rod (633) is smaller than the diameter of the isolation cover (631).

10. A flue gas desulfurization device according to claim 6, characterized in that: The release device (65) is connected to the isolation cover (631) via a return spring (651), and the release device (65) is connected to the elastic filter support (4).

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