Injection turbulence type flue gas energy-saving desulfurization device and method based on sodium-based method

Abstract

The present invention relates to the technical field of desulfurization devices, and specifically to a sodium-based jet turbulent flue gas energy-saving desulfurization device and method, wherein the desulfurization device comprises a flue gas tower, an auxiliary control mechanism and a driving device; the auxiliary control mechanism comprises a partition frame, a box body and a secondary pipe, the partition frame is arranged in the flue gas tower, a nozzle for spraying medicine is arranged in the first flue and the second flue, the box body is connected to the partition frame, and a valve plate is rotatably arranged on the box body, a secondary pipe and a partition plate are arranged at the bottom of the box body, and the partition frame, the secondary pipe and the partition plate separate the first flue and the second flue in the flue gas tower; the driving device is used to control the rotation of the valve plate; in the working state, the driving device controls the rotation of the valve plate to control the opening and closing of the flue gas from the second flue. The present invention realizes the function of separating the first flue and the second flue of different strokes in the flue gas tower, and solves the problem that the desulfurization efficiency of the traditional desulfurization device is fixed and cannot adapt to different flue gas flows.

Description

Technical Field

[0001] The invention relates to the field of desulfurization devices, and in particular to a sodium-based jet turbulence type flue gas energy-saving desulfurization device and method. Background Art

[0002] Flue gas spray desulfurization is a widely used flue gas desulfurization technology. Its basic principle is to make the flue gas contact and react with the sprayed alkaline desulfurization liquid to convert the sulfur oxides (mainly sulfur dioxide SO2) in the flue gas into water-soluble compounds, thereby achieving the purpose of desulfurization. However, due to the unstable flue gas transmission speed, when the flue gas is transmitted too fast, the reaction between the flue gas and the absorbent will not be complete, resulting in the situation that some flue gas is not completely purified.

[0003] To this end, Chinese patent application CN118491289A discloses an injection-type energy-saving sodium-based high-efficiency desulfurization device for hot blast furnace flue gas. Through the setting of a movable sealing component, after the gas enters the reactor, the movable sealing component allows the airflow to flow in other directions in the reactor, and then blows on the spoiler component, thereby causing the airflow to flow irregularly in the reactor, promoting the effective reaction of the sodium bicarbonate ultrafine powder and the flue gas. After passing through the spoiler of the spoiler component, the airflow will blow on the movable shielding component, and the airflow will be disturbed again by the movable shielding component, further promoting the irregular circulation of the airflow in the reactor, so that the flue gas can further contact with the sodium bicarbonate ultrafine powder, thereby making the sodium bicarbonate ultrafine powder desulfurize the flue gas more thoroughly and improving the desulfurization efficiency.

[0004] However, since the disturbed airflow is irregular and the working efficiency of the existing desulfurization device is fixed, although most of the flue gas can be completely desulfurized, there will still be some airflow that is not blocked and is directly discharged through the outlet pipe. Its desulfurization work is not stable, which makes it unable to adapt to different flue gas transmission speeds. When the flue gas volume is large, it can only control the flue gas transmission speed, resulting in a large amount of flue gas accumulation and increased air pressure, causing safety hazards. Summary of the invention

[0005] In view of the above problems, a sodium-based jet turbulence flue gas energy-saving desulfurization device and method are provided. The problem that the desulfurization efficiency of traditional desulfurization devices is fixed and cannot adapt to different flue gas flow rates is solved through a flue gas tower, an auxiliary control mechanism and a drive device.

[0006] In order to solve the problems of the prior art, the present invention provides a sodium-based jet turbulence type flue gas energy-saving desulfurization device, comprising a flue gas tower, an auxiliary control mechanism and a driving device; the auxiliary control mechanism comprises a partition frame, a box body and an auxiliary pipe, the partition frame is arranged in the flue gas tower, the box body is connected to the partition frame, and a valve plate is rotatably arranged on the box body, and an auxiliary pipe and a partition are arranged at the bottom of the box body, the partition frame, the auxiliary pipe and the partition plate separate a first flue and a second flue in the flue gas tower, and nozzles for spraying agents are provided in the first flue and the second flue; the driving device is used to control the rotation of the valve plate; in a working state, the driving device controls the rotation of the valve plate to control the opening and closing of the flue gas from the second flue.

[0007] Preferably, the desulfurization device also includes a buffer tower, which is connected to the flue gas tower through a pipeline. The buffer tower is provided with a storage chamber for storing flue gas and a desulfurization chamber for purifying flue gas. A reflux pipe for connecting the flue gas tower and the storage chamber is provided on the partition frame. The reflux pipe is connected to a control component for controlling the connection state of the reflux pipe.

[0008] Preferably, the control component includes an inner tube, a top cover and a sealing ring; the inner tube is connected to the return pipe, a notch is provided on the inner tube for smoke to pass through, and the return pipe is connected to the box body through the inner tube; the top cover is connected to the top end of the inner tube; the sealing ring is slidably sleeved on the inner tube, and the sealing ring is tightly fitted with the inner wall of the return pipe; a lifting component for controlling the sliding of the sealing ring is provided on the partition frame; in the working state, when the lifting component controls the sealing ring to move upward until the sealing ring abuts against the top cover, the sealing ring blocks the notch of the inner tube.

[0009] Preferably, the driving device includes a bracket, a linear drive and an articulated seat; the bracket is movably arranged on the partition frame, a straight groove is opened on the bracket, and a movable shaft is slidably arranged in the straight groove; the linear drive is arranged on the partition frame, and the linear drive is used to control the lifting and lowering of the bracket; an articulated seat is provided on the valve plate, and the movable shaft is rotatably connected to the articulated seat.

[0010] Preferably, a mounting frame and a guide rod are provided on the partition frame; the mounting frame and the guide rod are slidably matched, and the mounting frame is connected to the bracket, and a supporting shaft slidably matched with the partition frame is provided at the bottom of the mounting frame.

[0011] Preferably, the lifting assembly includes a first elastic member and a connecting frame; a base for supporting the reflux pipe is provided on the partition frame; the two ends of the first elastic member are respectively connected to the sealing ring and the base; the connecting frame is transmission-connected to the driving device, and a push rod for overcoming the elastic force of the first elastic member and pushing the sealing ring is provided on the connecting frame; a limiting assembly is arranged on the top cover, and the limiting assembly is used to limit the movement of the sealing ring.

[0012] Preferably, the limiting component includes a mounting strip, a card block, a second elastic member and a mounting seat; the mounting strip is arranged on the top cover; a mounting groove is provided on the mounting strip, and the card block is slidably provided in the mounting groove of the mounting strip; the second elastic member is provided in the mounting groove, and the two ends of the second elastic member are respectively connected to the card block and the mounting strip; the mounting seat is arranged on the sealing ring, and a card slot cooperating with the card block is provided on the mounting seat, and when the card block is plugged into the card slot, the card block limits the movement of the sealing ring and the mounting seat.

[0013] Preferably, the push rod is provided with an extension block for pushing the card block, and an end of the extension block close to the card block is provided with an inclined surface for squeezing the card block.

[0014] Preferably, a limiting frame is provided on the partition frame, and when the valve plate abuts against the limiting frame, the valve plate is in an inclined state.

[0015] The sodium-based jet turbulence flue gas energy-saving desulfurization method comprises the following steps: S1, introducing the flue gas into the flue gas tower; S2a, when the flue gas flow exceeds a threshold value, the valve plate is controlled to rotate by a driving device to open the second flue; S2b, when the flue gas flow is less than a threshold value, the valve plate is controlled to rotate by a driving device to block the second flue; S3, spraying reagents through a nozzle to carry out a desulfurization reaction.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention realizes the function of separating the first flue and the second flue of different travels in the flue tower through the flue tower, the auxiliary control mechanism and the driving device, and realizes the effect of switching the transmission path of the flue gas through the driving device and the valve plate, and achieves the effect of controlling the flue gas desulfurization efficiency by controlling the reaction time between the flue gas and the reagent, solving the problem that the desulfurization efficiency of the traditional desulfurization device is fixed and cannot adapt to different flue gas flow rates. When the flue gas flow rate is small, the flue gas is controlled to be transmitted from the first flue, and when the flue gas flow rate is large, the flue gas is controlled to be transmitted from the second flue, extending the flue gas transmission path, thereby improving the desulfurization efficiency and avoiding incomplete flue gas purification;

[0018] 2. The present invention realizes the function of controlling the flue gas to be discharged into the buffer tower for storage and purification when the flue gas pressure increases through a buffer tower, a connecting pipe and a control component, so as to achieve the effect of pressure relief when the air pressure in the flue gas tower is too high, thereby increasing the maximum flue gas bearing capacity of the desulfurization device, improving the working stability and adaptability of the device, and when the flue gas flow in the flue gas tower is reduced and the flue gas is transmitted through the first flue, the connection of the reflux pipe is controlled by the connecting component to control the flue gas in the storage chamber to be re-transmitted to the flue gas tower for desulfurization operation. In order to avoid the flue gas travel of the second flue being too long and hindering the flue gas transmission, resulting in excessive air pressure in the channel, a buffer tower is set to guide the flue gas into the buffer tower, and the flue gas is purified through the desulfurization chamber, and through the cooperation of the reflux pipe and the control component, after the flue gas flow is reduced, the flue gas in the storage chamber is re-introduced into the flue gas tower through the reflux pipe for purification operation, thereby adapting to the large flow transmission of flue gas and being able to cope with the situation of high pressure transmission of flue gas;

[0019] 3. The present invention realizes the function of controlling the connectivity state of the reflux pipe through the inner pipe, the top cover and the sealing ring. Through the arrangement of the inner pipe and the sealing ring, a rapid switching response effect is achieved when the flow in the flue gas tower changes. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional schematic diagram of a jet-turbulent flue gas energy-saving desulfurization device based on the sodium-based method;

[0021] Figure 2 It is a three-dimensional schematic diagram of the internal structure of the flue gas tower in the jet turbulence type flue gas energy-saving desulfurization device based on the sodium-based method;

[0022] Figure 3 It is a cross-sectional schematic diagram of the flue gas flow path inside the flue gas tower in a jet-turbulent flue gas energy-saving desulfurization device based on the sodium-based method;

[0023] Figure 4 It is a three-dimensional schematic diagram of the auxiliary control mechanism in the sodium-based jet turbulence flue gas energy-saving desulfurization device when the second flue is closed;

[0024] Figure 5 It is a three-dimensional schematic diagram of the return pipe, control component, lifting component and limiting component in the jet turbulence type flue gas energy-saving desulfurization device based on the sodium-based method;

[0025] Figure 6 It is a three-dimensional exploded schematic diagram of the reflux pipe, control component, lifting component and limiting component in the jet turbulence type flue gas energy-saving desulfurization device based on the sodium-based method;

[0026] Figure 7 It is a three-dimensional schematic diagram of the auxiliary control mechanism and driving device in the jet-turbulent flue gas energy-saving desulfurization device based on the sodium-based method;

[0027] Figure 8 It is a three-dimensional schematic diagram of one set of valve plates and lifting components on a partition frame in a jet-turbulent flue gas energy-saving desulfurization device based on a sodium-based method;

[0028] Fig. 9 It is a three-dimensional exploded schematic diagram of the restriction components in the injection turbulence type flue gas energy-saving desulfurization device based on the sodium-based method;

[0029] Fig.10 It is a three-dimensional schematic diagram of the partition frame and the reflux pipe in the jet-turbulent flue gas energy-saving desulfurization device based on the sodium-based method;

[0030] Fig.11 It is a three-dimensional schematic diagram of the auxiliary control mechanism when opening the side channel.

[0031] The numbers in the figure are: 1-smoke tower; 11-first flue; 12-second flue; 2-auxiliary control mechanism; 21-partition frame; 211-limiting frame; 22-box; 221-valve plate; 23-auxiliary pipe; 24-partition; 3-driving device; 31-bracket; 311-movable shaft; 32-linear drive; 33-hinged seat; 34-mounting frame; 341-support shaft; 35-guide rod; 4-buffer tower; 41-reflux pipe; 42-control component; 421-inner pipe; 4211-notch; 422-top cover; 423-sealing ring; 43-lifting component; 431-first elastic member; 432-connecting frame; 4321-push rod; 4322-extension block; 44-limiting component; 441-mounting strip; 442-block; 443-second elastic member; 444-mounting seat; 4441-slot. DETAILED DESCRIPTION

[0032] In order to further understand the features, technical means, specific objectives and functions of the present invention, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0033] Reference Figure 1-Figure 11 : A jet turbulence flue gas energy-saving desulfurization device based on the sodium-based method includes a flue gas tower 1, an auxiliary control mechanism 2 and a driving device 3; the auxiliary control mechanism 2 includes a partition frame 21, a box body 22 and an auxiliary pipe 23, the partition frame 21 is arranged in the flue gas tower 1, the box body 22 is connected to the partition frame 21, and a valve plate 221 is rotatably arranged on the box body 22, and an auxiliary pipe 23 and a partition plate 24 are arranged at the bottom of the box body 22, and the partition frame 21, the auxiliary pipe 23 and the partition plate 24 separate the first flue 11 and the second flue 12 in the flue gas tower 1; the driving device 3 is used to control the rotation of the valve plate 221, and the first flue 11 and the second flue 12 are both provided with nozzles for spraying agents; in the working state, the driving device 3 controls the rotation of the valve plate 221 to control the opening and closing of the flue gas from the second flue 12.

[0034] The present invention realizes the function of separating the first flue 11 and the second flue 12 of different travels in the flue tower 1 through the flue tower 1, the auxiliary control mechanism 2 and the driving device 3, and realizes the effect of switching the transmission path of the flue through the driving device 3 and the valve plate 221, and achieves the effect of controlling the flue gas desulfurization efficiency by controlling the reaction time of the flue gas and the reagent, solving the problem that the desulfurization efficiency of the traditional desulfurization device is fixed and cannot adapt to different flue gas flow rates. The flue gas flow path inside the flue tower 1 is as follows Figure 3 As shown by the middle arrow, the smoke tower 1 is provided with an air inlet and an air outlet for transmitting smoke. A flow sensor for sensing the flow velocity of smoke is provided at the air inlet of the smoke tower 1, and the flow sensor is not shown in the figure. A lateral channel and a bottom channel for smoke to pass through are provided on the partition frame 21, and a through groove for smoke to enter the box body 22 from the second flue 12 is provided on the box body 22. The valve plate 221 is used to block the lateral channel or the bottom channel on the partition frame 21. In the working state, the flow rate of the flue gas is monitored by the flow sensor. When the flue gas flow rate is small, the valve plate 221 is controlled to rotate by the driving device 3 to close the second flue 12, so that the flue gas is transmitted along the first flue 11, and the flue gas enters the flue gas tower 1 from the air inlet, and then enters the box body 22 through the bottom channel on the partition frame 21, and is transmitted from the auxiliary pipe 23 at the bottom of the box body 22 to the air outlet of the flue gas tower 1 for discharge, and reacts with the reagent sprayed from the nozzle in the process to perform desulfurization work; when the flue gas flow rate is large, the valve plate 221 is controlled to rotate by the driving device 3, so that the valve plate 221 is sealed. The bottom channel on the partition frame 21 is blocked and the side channel is opened. The smoke enters the second flue 12, and then enters the first flue 11 after passing through the second flue 12, and is then discharged from the smoke tower 1. After the smoke enters the smoke tower 1 from the air inlet, it enters the channel between the outer wall of the partition 24 and the inner wall of the smoke tower 1 from the side channel of the partition frame 21, and then enters the channel between the inner wall of the partition 24 and the outer wall of the auxiliary pipe 23 from the bottom of the partition 24, and then enters the box body 22 from the through groove at the top of the box body 22, and then enters the first flue 11, and then is transmitted from the auxiliary pipe 23 at the bottom of the box body 22 to the air outlet for discharge.

[0035] Reference Figure 1 , Figure 4 and Figure 5 The desulfurization device also includes a buffer tower 4, which is connected to the flue gas tower 1 through a pipeline. The buffer tower 4 is provided with a storage chamber for storing flue gas and a desulfurization chamber for purifying flue gas. The partition frame 21 is provided with a reflux pipe 41 for connecting the flue gas tower 1 and the storage chamber. The reflux pipe 41 is connected to a control component 42 for controlling the connection state of the reflux pipe 41.

[0036] The present invention realizes the function of controlling the flue gas to be discharged into the buffer tower 4 for storage and purification when the flue gas pressure increases through the buffer tower 4, the reflux pipe 41 and the control component 42, so as to achieve the effect of pressure relief when the air pressure in the flue gas tower 1 is too high, thereby increasing the maximum flue gas bearing capacity of the desulfurization device and improving the working stability and adaptability of the desulfurization device. A pump body for controlling air flow transmission is provided on the pipe connecting the buffer tower 4 and the flue gas tower 1 and the return pipe 41. The storage chamber and the desulfurization chamber are connected through the pipe. In order to prevent the flue gas travel of the second flue 12 from being too long and hindering the flue gas transmission, resulting in excessive air pressure in the channel, a pipe for connecting the second flue 12 and the buffer tower 4 and a control component 42 for controlling the connection of the return pipe 41 are provided in the second flue 12. When the flue gas in the flue gas tower 1 is transmitted at a large flow rate for a long time, the flue gas is transmitted and purified through the second flue 12. Since the transmission stroke of the second flue 12 is long, the air pressure in the flue gas tower 1 will increase accordingly. When the air pressure in the flue gas tower 1 increases to above the threshold, the flue gas is introduced into the buffer tower 4 through the pipe, and the flue gas is purified through the desulfurization chamber. After the flue gas flow in the flue tower 1 is reduced, the control component 42 is connected to the return pipe 41, and the flue gas in the storage chamber is re-introduced into the flue gas tower 1 through the return pipe 41 for purification operation, thereby adapting to the large flow transmission of flue gas and being able to cope with the situation of high-pressure transmission of flue gas.

[0037] Reference Figure 4-Figure 6 : The control component 42 includes an inner tube 421, a top cover 422 and a sealing ring 423; the inner tube 421 is connected to the return pipe 41, and a notch 4211 for smoke to pass through is opened on the inner tube 421, and the return pipe 41 is connected to the box body 22 through the inner tube 421; the top cover 422 is connected to the top end of the inner tube 421; the sealing ring 423 is slidably sleeved on the inner tube 421, and the sealing ring 423 is tightly matched with the inner wall of the return pipe 41; a lifting component 43 for controlling the sliding of the sealing ring 423 is provided on the partition frame 21; in the working state, when the lifting component 43 controls the sealing ring 423 to move up until the sealing ring 423 abuts against the top cover 422, the sealing ring 423 blocks the notch 4211 of the inner tube 421.

[0038] The present invention realizes the function of controlling the connection state of the reflux pipe 41 through the inner pipe 421, the top cover 422 and the sealing ring 423. Through the arrangement of the inner pipe 421 and the sealing ring 423, when the flow rate in the flue gas tower 1 changes, the effect of rapid switching response is achieved. After a certain amount of flue gas is stored in the storage chamber of the buffer tower 4, when the flue gas flow rate in the flue gas tower 1 decreases, the lifting component 43 controls the sealing ring 423 to move downward, exposing the notch 4211 on the inner pipe 421, controlling the flue gas in the storage chamber to be discharged into the reflux pipe 41, and entering the inner pipe 421 through the notch 4211 on the inner pipe 421, and then entering the box 22 from the inner pipe 421, and then transmitted to the gas outlet of the flue gas tower 1 through the auxiliary pipe 23 at the bottom of the box 22, and then undergoing a desulfurization reaction with the agent sprayed from the nozzle during the transmission process to purify the flue gas. When the flue gas flow in the flue gas tower 1 increases, the sealing ring 423 is controlled to move upward by the lifting assembly 43 until the sealing ring 423 abuts against the top cover 422. The sealing ring 423 blocks the gap 4211 of the inner tube 421 and disconnects the inner tube 421, thereby preventing the flue gas flow in the flue gas tower 1 from further increasing.

[0039] Reference Figure 2 and Figure 8 : The driving device 3 includes a bracket 31, a linear driver 32 and an articulated seat 33; the bracket 31 is movably arranged on the partition frame 21, a straight groove is provided on the bracket 31, and a movable shaft 311 is slidably arranged in the straight groove; the linear driver 32 is arranged on the partition frame 21, and the linear driver 32 is used to control the lifting and lowering of the bracket 31; an articulated seat 33 is provided on the valve plate 221, and the movable shaft 311 is rotatably connected to the articulated seat 33.

[0040] The present invention realizes the function of controlling the rotation of the valve plate 221 through the bracket 31, the linear drive 32 and the articulated seat 33. The linear drive 32 is preferably a linear cylinder or an electric push rod. The smoke tower 1 is provided with a controller for human-machine interaction, and the linear drive 32 is electrically connected to the controller; in the working state, when the smoke flow increases and exceeds the threshold, the controller sends a signal to the linear drive 32, and the linear drive 32 starts the linear drive 32 after receiving the signal. The linear drive 32 controls the bracket 31 to move downward, and the bracket 31 pushes the movable shaft 311 downward through the side wall of the straight groove, and then drives the articulated seat 33 and the valve plate 2 through the movable shaft 311. 21 moves, when the valve plate 221 blocks the bottom channel on the partition frame 21, the other side of the valve plate 221 is separated from the lateral channel on the partition frame 21, and the lateral channel is opened. After the smoke enters the smoke tower 1 from the air inlet, it enters the channel between the outer wall of the partition 24 and the inner wall of the smoke tower 1 from the lateral channel of the partition frame 21, and then enters the channel between the inner wall of the partition 24 and the outer wall of the auxiliary pipe 23 from the bottom of the partition 24, and then enters the box body 22 from the through groove at the top of the box body 22, and then is transmitted from the auxiliary pipe 23 at the bottom of the box body 22 to the air outlet for discharge.

[0041] Reference Figure 2 , Figure 7 and Figure 8 : The partition frame 21 is provided with a mounting frame 34 and a guide rod 35; the mounting frame 34 and the guide rod 35 are slidably matched, and the mounting frame 34 is connected to the bracket 31, and the bottom of the mounting frame 34 is provided with a support shaft 341 that slides with the partition frame 21.

[0042] The present invention realizes the function of supporting and guiding the bracket 31 through the mounting frame 34 and the guide rod 35, so as to improve the moving stability of the bracket 31. The partition frame 21 includes a transverse plate, and the bottom channel is opened on the transverse plate. The mounting frame 34 and the guide rod 35 are both arranged on the transverse plate. The transverse plate is as shown in FIG. Figure 7 As shown; in order to improve the transmission efficiency of flue gas, four side channels and four bottom channels are provided on the partition frame 21, and a valve plate 221 is provided at each of the four side channels and the bottom channel. For this purpose, four movable shafts 311 and four brackets 31 cooperating with the four valve plates 221 are provided. In order to improve the consistency and stability of driving the valve plates 221, a mounting frame 34 connecting the four brackets 31 is provided, and the mounting frame 34 is guided and supported by a support shaft 341 to prevent the mounting frame 34 from tilting during the lifting process. When driving, the bracket 31 is driven to move by the linear drive 32, and the bracket 31 is synchronously moved through the connection with the mounting frame 34, thereby controlling the synchronous rotation of the four valve plates 221 and controlling the opening and closing of the second flue 12.

[0043] Reference Figure 4-Figure 6 and Fig. 9 : The lifting assembly 43 includes a first elastic member 431 and a connecting frame 432; a base for supporting the reflux pipe 41 is provided on the partition frame 21; the two ends of the first elastic member 431 are respectively connected to the sealing ring 423 and the base; the connecting frame 432 is transmission-connected to the driving device 3, and a push rod 4321 is provided on the connecting frame 432 for overcoming the elastic force of the first elastic member 431 and pushing the sealing ring 423; the limiting assembly 44 is arranged on the top cover 422, and the limiting assembly 44 is used to limit the movement of the sealing ring 423.

[0044] The present invention realizes the function of controlling the lifting of the sealing ring 423 through the first elastic member 431, the connecting frame 432 and the limiting component 44. The connecting frame 432 is connected to the bracket 31; when the flue gas flow rate drops below the threshold, the driving device 3 controls the valve plate 221 to rotate, so that the flue gas is transmitted along the first flue 11, and the flue gas enters the flue gas tower 1 from the air inlet, and then enters the box body 22 through the bottom channel on the partition frame 21, and is transmitted from the auxiliary pipe 23 at the bottom of the box body 22 to the air outlet of the flue gas tower 1 for discharge, and reacts with the agent sprayed from the nozzle in the process to perform desulfurization work; at this time, if a certain amount of flue gas is stored in the storage chamber in the buffer tower 4, even if the flue gas tower 4 is 1 does not rise above the threshold, the controller still starts the linear drive 32, controls the valve plate 221 to rotate through the linear drive 32, opens the second flue 12, and at the same time, the bracket 31 drives the connecting frame 432 and the push rod 4321 to move, and through the squeezing action of the push rod 4321, the movement restriction of the sealing ring 423 by the restriction component 44 is released, and after the push rod 4321 contacts the sealing ring 423, it overcomes the elastic force of the first elastic member 431 to press the sealing ring 423 downward, exposing the notch 4211 on the inner tube 421. When the push rod 4321 is not pressed downward, the sealing ring 423 is reset under the elastic force of the first elastic member 431, and the restriction component 44 will restrict the movement of the sealing ring 423 to prevent the sealing ring 423 from moving by itself under the action of air pressure.

[0045] Reference Figure 4-Figure 6 and Fig. 9 The limiting component 44 includes a mounting strip 441, a clamping block 442, a second elastic member 443 and a mounting seat 444; the mounting strip 441 is arranged on the top cover 422; a mounting groove is provided on the mounting strip 441, and the clamping block 442 is slidably provided in the mounting groove of the mounting strip 441; the second elastic member 443 is provided in the mounting groove, and the two ends of the second elastic member 443 are respectively connected to the clamping block 442 and the mounting strip 441; the mounting seat 444 is arranged on the sealing ring 423, and a clamping groove 4441 cooperating with the clamping block 442 is provided on the mounting seat 444, and when the clamping block 442 is plugged into and matched with the clamping groove 4441, the clamping block 442 limits the movement of the sealing ring 423 and the mounting seat 444.

[0046] The present invention realizes the function of limiting the movement of the sealing ring 423 through the mounting strip 441, the block 442, the second elastic member 443 and the mounting seat 444. When a certain amount of flue gas is stored in the storage chamber in the buffer tower 4 and the amount of flue gas in the flue gas tower 1 does not rise above the threshold, the controller sends a signal to the linear driver 32, and the linear driver 32 controls the valve plate 221 to rotate, and the second flue 12 is opened. At the same time, the bracket 31 drives the connecting frame 432 and the push rod 4321 to move. Through the squeezing action of the push rod 4321, the elastic force of the second elastic member 443 is overcome to push the block 442, so that the block 442 is separated from the card slot 4441, and the movement restriction of the sealing ring 423 by the limiting component 44 is released. After the push rod 4321 contacts the sealing ring 423, it overcomes the elastic force of the first elastic member 431 to press the sealing ring 423 downward, exposing the notch 4211 on the inner tube 421. When the push rod 4321 is driven to reset by the drive device 3, the sealing ring 423 is reset under the elastic force of the first elastic member 431. When the block 442 is aligned with the slot 4441 and the push rod 4321 no longer pushes the block 442, the block 442 is inserted into the slot 4441 under the elastic force of the second elastic member 443, thereby limiting the movement of the sealing ring 423 and preventing the sealing ring 423 from moving on its own under the action of air pressure.

[0047] Reference Figure 6 : An extension block 4322 for pushing the clamping block 442 is provided on the push rod 4321, and an end of the extension block 4322 close to the clamping block 442 is provided with an inclined surface for squeezing the clamping block 442.

[0048] The present invention realizes the function of releasing the movement restriction of the sealing ring 423 by the restriction assembly 44 by the push of the push rod 4321 through the extension block 4322. When the linear drive 32 drives the bracket 31 to move downward, the bracket 31 drives the push rod 4321 and the extension block 4322 to move through the connecting frame 432. After the extension block 4322 contacts the clamping block 442, the inclined surface of the extension block 4322 overcomes the elastic force of the second elastic member 443 to squeeze the clamping block 442, so that the clamping block 442 is separated from the clamping groove 4441, and the movement restriction of the sealing ring 423 by the clamping block 442 is released. Then, the push rod 4321 and the extension block 4322 overcome the elastic force of the first elastic member 431 to push the mounting seat 444 and the sealing ring 423, so that the sealing ring 423 is misaligned with the notch 4211 of the inner tube 421, and the smoke enters the inner tube 421 through the notch 4211.

[0049] Reference Figure 4 and Fig.10 A limiting frame 211 is provided on the partition frame 21. When the valve plate 221 abuts against the limiting frame 211, the valve plate 221 is in an inclined state.

[0050] The present invention realizes the function of controlling the state of the valve plate 221 by setting the limit frame 211. When the valve plate 221 blocks the second flue 12, it is in an inclined state, so that the bracket 31 can stably push the movable shaft 311 and the valve plate 221 to rotate when it moves downward. The lateral channel is set on the limit frame 211. When the valve plate 221 blocks the lateral channel, if the valve plate 221 is in a vertical state, when the linear drive 32 pushes the movable shaft 311 and the valve plate 221 through the bracket 31, the pressure acts downward in the vertical direction, and the valve plate 221 generates a force in the opposite direction. When the pressure direction is not deflected, the valve plate 221 cannot rotate. For this reason, a limit frame 211 is set to limit the rotation direction of the valve plate 221. By setting the lateral channel on the limit frame 211 to limit the rotation of the valve plate 221, the valve plate 221 is in an inclined state when the lateral channel is blocked, avoiding the situation where the valve plate 221 cannot be pushed to rotate.

[0051] Reference Figure 1-Figure 4 : The sodium-based jet turbulence flue gas energy-saving desulfurization method includes the following steps: S1, passing the flue gas into the flue gas tower 1; S2a, when the flue gas flow exceeds the threshold, the valve plate 221 is controlled to rotate by the driving device 3 to open the second flue 12; S2b, when the flue gas flow is less than the threshold, the valve plate 221 is controlled to rotate by the driving device 3 to block the second flue 12; S3, spraying the agent through the nozzle to carry out the desulfurization reaction.

[0052] The above embodiments only express one or several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the attached claims.

Claims

1. The sodium-based jet turbulence flue gas energy-saving desulfurization device is characterized by: It comprises a smoke tower (1), an auxiliary control mechanism (2) and a driving device (3); The auxiliary control mechanism (2) comprises a partition frame (21), a box body (22) and a secondary pipe (23); the box body (22) is connected to the partition frame (21), and a valve plate (221) is rotatably provided on the box body (22); the bottom of the box body (22) is provided with a secondary pipe (23) and a partition plate (24); the partition frame (21), the secondary pipe (23) and the partition plate (24) separate a first flue (11) and a second flue (12) in the flue gas tower (1); the partition frame (21) is provided in the flue gas tower (1); and nozzles for spraying medicine are provided in the first flue (11) and the second flue (12); The driving device (3) is used to control the rotation of the valve plate (221); In a working state, the driving device (3) controls the valve plate (221) to rotate, thereby controlling the flue gas to pass through the flue gas tower (1) from the first flue (11) or the second flue (12); The desulfurization device further comprises a buffer tower (4), the buffer tower (4) being connected to the flue gas tower (1) via a pipeline, a storage chamber for storing flue gas and a desulfurization chamber for purifying flue gas being provided in the buffer tower (4), a reflux pipe (41) for connecting the flue gas tower (1) and the storage chamber being provided on the partition frame (21), and the reflux pipe (41) being connected to a control component (42) for controlling the connection state of the reflux pipe (41); The control assembly (42) comprises an inner tube (421), a top cover (422) and a sealing ring (423); The inner tube (421) is connected to the return pipe (41); a notch (4211) is provided on the inner tube (421) for smoke to pass through; and the return pipe (41) is connected to the box body (22) through the inner tube (421); The top cover (422) is connected to the top end of the inner tube (421); The sealing ring (423) is slidably sleeved on the inner tube (421), and the sealing ring (423) is tightly matched with the inner wall of the return tube (41); A lifting assembly (43) for controlling the sliding of the sealing ring (423) is provided on the partition frame (21); In the working state, when the lifting assembly (43) controls the sealing ring (423) to move upward until the sealing ring (423) abuts against the top cover (422), the sealing ring (423) blocks the notch (4211) of the inner tube (421); The driving device (3) comprises a bracket (31), a linear drive (32) and an articulated seat (33); The bracket (31) is movably arranged on the partition frame (21), a straight groove is provided on the bracket (31), and a movable shaft (311) is slidably arranged in the straight groove; The linear drive (32) is arranged on the partition frame (21), and the linear drive (32) is used to control the lifting and lowering of the support (31); A hinge seat (33) is provided on the valve plate (221), and the movable shaft (311) is rotatably connected to the hinge seat (33); The lifting assembly (43) comprises a first elastic member (431) and a connecting frame (432); A base for supporting the reflux pipe (41) is provided on the partition frame (21); Two ends of the first elastic member (431) are respectively connected to the sealing ring (423) and the base; The connecting frame (432) is drivingly connected to the driving device (3), and a push rod (4321) is provided on the connecting frame (432) for overcoming the elastic force of the first elastic member (431) to push the sealing ring (423); The limiting component (44) is arranged on the top cover (422), and the limiting component (44) is used to limit the movement of the sealing ring (423); The limiting assembly (44) comprises a mounting strip (441), a clamping block (442), a second elastic member (443) and a mounting seat (444); The mounting strip (441) is disposed on the top cover (422); The mounting strip (441) is provided with a mounting groove, and the clamping block (442) is slidably disposed in the mounting groove of the mounting strip (441); The second elastic member (443) is arranged in the installation groove, and two ends of the second elastic member (443) are respectively connected to the clamping block (442) and the installation bar (441); The mounting seat (444) is arranged on the sealing ring (423); a clamping groove (4441) cooperating with the clamping block (442) is provided on the mounting seat (444); when the clamping block (442) is plugged into and engaged with the clamping groove (4441), the clamping block (442) restricts the movement of the sealing ring (423) and the mounting seat (444).

2. The sodium-based jet turbulence flue gas energy-saving desulfurization device according to claim 1 is characterized in that: A mounting frame (34) and a guide rod (35) are provided on the partition frame (21); The mounting frame (34) and the guide rod (35) are slidably matched, and the mounting frame (34) is connected to the bracket (31). The bottom of the mounting frame (34) is provided with a support shaft (341) slidably matched with the partition frame (21).

3. The sodium-based jet turbulence flue gas energy-saving desulfurization device according to claim 2 is characterized in that: An extension block (4322) for pushing the clamping block (442) is provided on the push rod (4321), and an inclined surface for squeezing the clamping block (442) is provided on one end of the extension block (4322) close to the clamping block (442).

4. The sodium-based jet turbulence flue gas energy-saving desulfurization device according to claim 1 is characterized in that: A limiting frame (211) is provided on the partition frame (21); when the valve plate (221) abuts against the limiting frame (211), the valve plate (221) is in an inclined state.

5. A sodium-based jet turbulent flue gas energy-saving desulfurization method, using a sodium-based jet turbulent flue gas energy-saving desulfurization device according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1, passing flue gas into a flue gas tower (1); S2a, when the flue gas flow exceeds a threshold value, the valve plate (221) is controlled to rotate by the driving device (3), thereby opening the second flue (12) and blocking the first flue (11); S2b, when the flue gas flow rate is less than a threshold value, the valve plate (221) is controlled to rotate by the driving device (3), thereby blocking the second flue (12) and opening the first flue (11); S3. Spray the reagent through the nozzle to carry out the desulfurization reaction.

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