Liquid level adjusting device and method for desulfurization system

Abstract

The invention relates to the technical field of desulfurization system liquid level adjusting devices, and provides a desulfurization system liquid level adjusting device and a method thereof.The desulfurization system liquid level adjusting device comprises a tower body, the tower body comprises a slurry pond and is provided with an automatic supplementing mechanism, the automatic supplementing mechanism comprises a supplementing box, supplementing liquid and a liquid level floater, and a supplementing pipe is arranged between the supplementing box and the tower body; the supplementing outlet liquid is fixedly connected to the interior of the tower body and communicated with the supplementing pipe, the liquid level floater is located in the slurry pond, and a linkage control structure used for controlling slurry in the supplementing outlet liquid to flow into the slurry pond is arranged between the liquid level floater and the supplementing outlet liquid. According to the technical scheme, the problem that the liquid level is too high easily when the slurry is supplemented in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of liquid level adjustment devices for desulfurization systems, and in particular to a liquid level adjustment device for a desulfurization system and a method thereof. Background Art

[0002] The desulfurization system generally refers to a device that uses a desulfurization absorption tower as a carrier to reduce carbon dioxide emissions in flue gas. It is widely used in coal-fired power generation, steel manufacturing, biomass combustion and other fields.

[0003] Although the desulfurization absorption tower performs desulfurization work by spraying and makes the desulfurized slurry fall back into the slurry pool at the bottom of the tower to realize the circulating desulfurization work, the desulfurized slurry will decrease due to the absorption of sulfur dioxide. Because, as the slurry absorbs sulfur dioxide, the composition of the slurry will change, especially the content of calcium sulfite will increase. As the spray assembly continues to work, other components in the slurry (such as calcium sulfite and calcium sulfate) will continue to accumulate, resulting in a decrease in the total amount of slurry. The reduction in the total amount of slurry will cause the slurry level to drop. If the liquid level is too low, it will reduce the oxidation reaction space, affect the quality of gypsum, and reduce the desulfurization efficiency. Low liquid level may also cause the solution concentration in the tower to be high, which is easy to crystallize and clog the nozzle, affecting environmental protection indicators. In addition, low liquid level will also cause the pressure on the suction side of the circulating pump to be too low, causing cavitation of the circulating pump, and in severe cases, abnormal vibration of the circulating pump.

[0004] Therefore, after working in the desulfurization absorption tower for a period of time, the staff needs to add slurry to the desulfurization absorption tower. However, since the desulfurization absorption tower itself is a closed environment, the staff cannot timely know the internal liquid level of the desulfurization absorption tower. Therefore, in the process of adding slurry, it is easy to cause the liquid level to be too high, resulting in increased overflow of the absorption tower. When the liquid level is too high, the slurry is easy to flow back into the flue, damaging the equipment, and reducing the oxidation reaction space, reducing the desulfurization efficiency. In addition, the high liquid level will increase the output and power consumption of the oxidation fan, and may cause the demister to fail to be flushed normally, causing scaling and equipment damage. Summary of the invention

[0005] The present invention provides a desulfurization system liquid level adjustment device and method thereof, which solves the problem in the related art that the liquid level is easily too high when supplementing slurry.

[0006] The technical solution of the present invention is as follows:

[0007] A desulfurization system liquid level adjustment device comprises a tower body, the tower body comprises a slurry pool, the tower body is provided with an automatic replenishing mechanism, the automatic replenishing mechanism comprises a replenishing box, replenishing liquid, and a liquid level float, a replenishing pipe is provided between the replenishing box and the tower body, the replenishing liquid is fixedly connected to the inside of the tower body and communicated with the replenishing pipe, the liquid level float is located in the slurry pool, and a linkage control structure for controlling the slurry in the replenishing liquid to flow into the slurry pool is provided between the liquid level float and the replenishing liquid.

[0008] Furthermore, the replenished liquid includes a connecting chamber and a liquid outlet chamber, the replenishing pipe is connected to the connecting chamber, the liquid outlet chamber includes a liquid outlet for supplying slurry to flow out of the liquid outlet chamber, and a connecting hole for connecting the liquid outlet chamber and the connecting chamber to each other; the linkage control structure includes a sliding rod and a blocking body, the liquid level float and the blocking body are respectively fixedly connected to the two ends of the sliding rod, the sliding rod is slidingly connected to the replenished liquid, and the blocking body is located in the liquid outlet chamber and is used to block the connecting hole.

[0009] Furthermore, the blocking body includes a blocking plate and a positioning block, the blocking plate is located between the positioning block and the sliding rod, and the diameter of the projection surface of the blocking plate in the direction of the connecting hole opening is larger than the diameter of the connecting hole, the longitudinal section of the positioning block is a triangular structure, and is located in the connecting hole.

[0010] Furthermore, there are a plurality of liquid outlets, each of which is evenly distributed around a circle for replenishing liquid, and the projection surface of each of the liquid outlets in the opening direction thereof is an arched structure.

[0011] Furthermore, the liquid replenishing outlet has a sliding hole, the sliding rod is slidingly connected in the sliding hole, and the diameter of the sliding hole is larger than the diameter of the projection surface of the sliding rod in the direction of the sliding hole opening.

[0012] Furthermore, the sliding rod is provided with a stabilizing top plate for contacting the replenished liquid, and a plurality of reinforcing ribs are provided between the stabilizing top plate and the sliding rod. The reinforcing ribs are evenly distributed around the sliding rod, and the projection surface of the stabilizing top plate in the axial direction of the sliding rod is an annular structure.

[0013] Furthermore, the sliding rod includes a first branch rod, a second branch rod, and an elastic buffer. The first branch rod is provided with a positioning shaft, and the second branch rod is provided with a positioning hole. The positioning shaft is located in the positioning hole and is slidingly connected to the second branch rod. The spacing between an end of the positioning hole away from the first branch rod and the first branch rod is greater than the axial length of the positioning shaft. The two ends of the elastic buffer are respectively fixedly connected to the first branch rod and the second branch rod, and the elastic buffer is sleeved on the positioning shaft.

[0014] Furthermore, the replenishing pipe is arranged obliquely, and the horizontal height of one end of the replenishing pipe close to replenishing the liquid is lower than the horizontal height of one end of the replenishing pipe close to the replenishing tank.

[0015] Furthermore, a drainage body is provided at one end of the replenished liquid away from the liquid level float, and the longitudinal section of the drainage body is a triangular structure.

[0016] A desulfurization system liquid level adjustment method, based on the above-mentioned desulfurization system liquid level adjustment device, comprises the following steps:

[0017] Step 1: Start the first water pump for providing slurry to the replenishing tank, and transport the slurry to the replenishing tank; Step 2: The slurry in the replenishing tank flows into the replenishing liquid through the replenishing pipe to realize the transfer of the slurry; Step 3: The liquid level float located in the slurry pool drops due to the drop in the liquid level in the slurry pool, thereby opening the outlet for replenishing the liquid, allowing the slurry to flow into the slurry pool, causing the liquid level in the slurry pool to return to normal, driving the liquid level float to rise again, closing the outlet for replenishing the liquid, stopping the slurry replenishment work, and completing the liquid level adjustment inside the tower body; Step 4: After the slurry in the slurry pool is consumed as the tower body works, its internal liquid level drops, and restarting step 3.

[0018] The working principle and beneficial effects of the present invention are:

[0019] The liquid level adjustment device in the present invention mainly comprises a tower body, which comprises a slurry pool, and a braking and replenishing mechanism is provided for the slurry in the slurry pool, so that the liquid level in the slurry pool can be maintained at a specified position, thereby ensuring the desulfurization efficiency of the desulfurization system;

[0020] The automatic replenishing mechanism mainly includes a replenishing box, replenishing liquid, and a liquid level float. The liquid level float is located in the slurry pool, that is, the liquid level float will rise or fall with the change of the slurry level in the slurry pool, thereby playing a role in judging the actual liquid level in the slurry pool; a replenishing pipe is provided between the replenishing box and the tower body, that is, the slurry in the replenishing box can flow into the tower body through the replenishing pipe to replenish the slurry inside the tower body, and one end of the replenishing pipe located inside the tower body is connected to the replenishing liquid uniformly located inside the tower body, that is, the replenishing liquid is used to perform the final slurry replenishment work, because compared with the liquid outlet of the tubular object (replenishing pipe), the liquid outlet of the replenishing liquid of the block object is easier to be closed, which can ensure that the present invention can stop the replenishing work in time, avoid the slurry level from being too high, ensure the stability of the tower body operation, and the replenishing liquid is fixedly connected to the inside of the tower body to ensure that the replenishing liquid can stably perform the replenishing work;

[0021] A linkage control structure is provided between the liquid level float and the replenished liquid to control the slurry in the replenished liquid to flow into the slurry pool, that is, the liquid level float will block the outlet of the replenished liquid as the liquid level rises, so that the replenished liquid stops discharging, effectively avoiding the liquid level being too high due to excessive slurry replenishment, which affects the normal operation of the tower body; and the blocking force of the liquid level float on the replenished liquid is clamped by the buoyancy in the slurry pool, which can effectively ensure the reliability of the blocking effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] Figure 1 It is a schematic diagram of the structure of Example 1, Example 2 or Example 3;

[0024] Figure 2 for Figure 1 Side view of

[0025] Figure 3 It is a partial cross-sectional view of Example 1;

[0026] Figure 4 is a partial cross-sectional view of Example 2;

[0027] Figure 5 for Figure 4 A partial enlarged view of the middle part;

[0028] Figure 6 is a partial cross-sectional view of Example 3;

[0029] Figure 7 for Figure 6 A partial enlarged view of point B in the middle;

[0030] Figure 8 Schematic diagram of the structure of the liquid level float in Example 3.

[0031] In the figure:

[0032] 1. Tower body; 11. Slurry pool; 2. Automatic replenishment mechanism; 21. Replenishment box; 22. Replenishment of liquid; 221. Connecting cavity; 222. Liquid outlet cavity; 2221. Liquid outlet; 2222. Connecting hole; 223. Sliding hole; 23. Liquid level float; 24. Replenishment pipe; 3. Linkage control structure; 31. Sliding rod; 311. First branch rod; 312. Second branch rod; 313. Elastic buffer; 314. Positioning shaft; 315. Positioning hole; 32. Blocking body; 321. Blocking plate; 322. Positioning block; 4. Stabilizing top plate; 5. Strengthening ribs; 6. Drainage body; 7. First water pump. DETAILED DESCRIPTION

[0033] The following will be combined with the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] Example 1

[0035] like Figures 1 to 3 As shown, this embodiment proposes a desulfurization system liquid level adjustment device, which mainly includes a tower body 1. The tower body 1 includes a slurry pool 11 and a spray assembly. The slurry pool 11 serves to store desulfurization slurry, and the slurry in the slurry pool 11 will be transported to the spray assembly above the slurry pool 11 under the action of each second water pump and sprayed out, fully contacting with the rising gas to complete the desulfurization work on the gas, and then falling back into the slurry pool 11 to realize circulation.

[0036] Due to contact with gas, the desulfurization slurry will be lost. In order to avoid the slurry level in the slurry pool 11 to drop due to the reduction in the total amount of slurry, reduce the oxidation reaction space, and affect the desulfurization efficiency, the tower body 1 is provided with an automatic replenishing mechanism 2. When the liquid level in the slurry pool 11 drops to a certain level, slurry is automatically added to the slurry pool 11 to adjust its liquid level back to a normal level.

[0037] Specifically, the automatic replenishment mechanism 2 includes a replenishment box 21, a replenished liquid 22, and a liquid level float 23. The liquid level float 23 is located in the slurry pool 11, that is, the liquid level float 23 will rise or fall with the change of the slurry level in the slurry pool 11, and judge the liquid level height in this embodiment.

[0038] The replenishing box 21 is equipped with a first water pump 7, which can pump water into the replenishing box 21. The replenishing box 21 serves to temporarily store slurry for subsequent replenishment of slurry in the slurry pool 11 inside the tower body 1. Therefore, a replenishing pipe 24 is provided between the replenishing box 21 and the tower body 1 to connect the two, so as to introduce the slurry into the interior of the tower body 1 and flow into the slurry pool 11.

[0039] The replenished liquid 22 is fixedly connected to the inside of the tower body 1 to ensure the stability of the replenished liquid 22 inside the tower body 1, and the replenishing pipe 24 is extended to communicate with the replenished liquid 22, that is, in the process of replenishing the slurry pool 11 with slurry, the replenished liquid 22 is used to discharge the liquid.

[0040] A linkage control structure 3 for controlling the slurry in the replenished liquid 22 to flow into the slurry pool 11 is provided between the liquid level float 23 and the replenished liquid 22. The linkage control structure 3 as a whole blocks the replenished liquid 22, and the linkage control structure 3 moves directly with the movement of the liquid level float 23, that is, when the liquid level is too high or rises, causing the liquid level float 23 to rise, the linkage control structure 3 will close the replenished liquid 22 and control the replenished liquid 22 to stop replenishing; and when the liquid level is too low or drops, causing the liquid level float 23 to drop, the linkage control structure 3 will open the replenished liquid 22 and control the replenished liquid 22 to carry out replenishing.

[0041] In detail, the replenished liquid 22 includes a connecting chamber 221 and a liquid outlet chamber 222. The replenishing pipe 24 is connected to the connecting chamber 221, that is, the slurry flowing into the replenished liquid 22 through the replenishing pipe 24 will preferentially enter the connecting chamber 221. The liquid outlet chamber 222 includes a liquid outlet 2221 for the slurry to flow out of the liquid outlet chamber 222, and a connecting hole 2222 for connecting the liquid outlet chamber 222 and the connecting chamber 221, that is, by blocking or canceling the blocking work of the connecting hole 2222, the replenished liquid 22 can be used to replenish the slurry in the slurry pool 11 or cancel it;

[0042] The linkage control structure 3 mainly includes a sliding rod 31 and a plugging body 32. The liquid level float 23 and the plugging body 32 are respectively fixedly connected to the two ends of the sliding rod 31 to ensure that the plugging body 32 can move with the movement of the liquid level float 23. The plugging body 32 is located in the liquid outlet cavity 222 and is used to plug the connecting hole 2222. Because the plugging body 32 is located in the liquid outlet cavity 222, the plugging body 32 can effectively avoid the gas to be sulfided flowing in the tower body 1, and avoid the gas to be sulfided and the slurry adhering to the plugging body 32 from reacting with each other to form compounds to affect the subsequent plugging work of the plugging body 32; the sliding rod 31 is slidingly connected to the replenished liquid 22. With the help of the constraint effect brought by the sliding connection property, it is ensured that the sliding rod 31 is always in the specified moving range, thereby ensuring that the plugging body 32 can accurately block the connecting hole 2222.

[0043] In summary, the automatic replenishment mechanism 2 in this embodiment decides whether to start the slurry replenishment work according to the actual liquid level situation inside the slurry pool 11, and can make adjustments in real time according to the liquid level situation, effectively avoiding excessive slurry replenishment causing the liquid level to be too high, affecting the normal use of the tower body 1; and, since the liquid level float 23 floats on the liquid surface, it displaces a certain amount of liquid, so that the slurry will generate buoyancy on the float, so that the blocking body 32 that blocks the connecting hole 2222 can be clamped by buoyancy, thereby increasing the force of the blocking body 32 on the connecting hole 2222 to ensure the stability of the blocking and sealing effect.

[0044] The blocking body 32 includes a blocking plate 321 and a positioning block 322. The blocking plate 321 is located between the positioning block 322 and the sliding rod 31, and the diameter of the projection surface of the blocking plate 321 in the direction of the opening of the connecting hole 2222 is larger than the diameter of the connecting hole 2222, that is, when the blocking body 32 blocks the connecting hole 2222, the blocking plate 321 will completely cover the connecting hole 2222, thereby effectively improving the blocking performance of the connecting hole 2222 by the blocking body 32; and the longitudinal section of the positioning block 322 is a triangular structure and is located in the connecting hole 2222, that is, the positioning block 322 presents a conical structure as a whole, so that when the positioning block 322 contacts the hole wall of the connecting hole 2222 and the liquid level float 23 continues to float up, it can guide the blocking body 32 to move to the center position of the connecting hole 2222 as a whole, so as to ensure that the blocking body 32 can accurately complete the blocking work.

[0045] Furthermore, since the sliding rod 31 is slidingly connected to the replenished liquid 22, the replenished liquid 22 should have a corresponding sliding hole 223 for the sliding rod 31 to be slidingly connected. The diameter of the sliding hole 223 in this embodiment is consistent with the diameter of the sliding rod 31 to avoid the sliding rod 31 from shaking inside the sliding hole 223 during the rising process of the liquid level float 23, thereby further ensuring the accuracy of the blocking work of the blocking body 32.

[0046] At the same time, a plurality of liquid outlets 2221 should be provided in the present embodiment, so as to improve the slurry replenishment efficiency of the replenished liquid 22; the liquid outlets 2221 are evenly distributed in a circle around the replenished liquid 22, and the projection surface of each liquid outlet 2221 in the opening direction is an arch structure, that is, the liquid outlet 2221 is opened on the replenished liquid 22 in the form of an arch hole. Because when the blocking body 32 blocks the connecting hole 2222, the slurry in the connecting cavity 221 cannot be released, which will give a certain pressure to the replenished liquid 22. The liquid outlet 2221 with an arch structure can effectively and evenly disperse the pressure to the two, thereby improving the carrying capacity of the replenished liquid 22 itself and enhancing its structural strength.

[0047] The replenishing pipe 24 is arranged at an angle, and the horizontal height of one end of the replenishing pipe 24 close to the replenished liquid 22 is lower than the horizontal height of one end of the replenishing pipe 24 close to the replenishing tank 21, so that the slurry in the replenishing tank 21 can automatically flow into the connecting cavity 221 under the influence of gravity until the connecting cavity 221 is filled, so that the liquid replenishment work between the replenishing tank 21 and the replenished liquid 22 does not require the aid of a water pump, effectively reducing the energy consumption during the operation of this embodiment.

[0048] The end of the replenished liquid 22 away from the liquid level float 23 is provided with a drainage body 6, and the longitudinal section of the drainage body 6 is a triangular structure, that is, the outer contour of the longitudinal section of the replenished liquid 22 is a polygonal structure, which effectively prevents the slurry sprayed by the spray assembly from remaining on the top of the replenished liquid 22. Preferably, the outer contour of the longitudinal section of the replenished liquid 22 is a pentagonal structure, because the slurry located on the surface of the replenished liquid 22 will move along the surface of the replenished liquid 22. If the structural angle is too large (for example, the right angle of the square), it may cause the liquid to stagnate at the corner, forming a local "dead water zone", and each internal angle of the pentagon is 108°. Compared with other shapes, this angle is neither too sharp nor too blunt, so it can provide a smoother flow path during the flow of the liquid. The flow of liquid on the surface of the pentagonal structure is usually smoother, and it is not easy to stay in the corner, reducing the impact of dead corners.

[0049] Example 2

[0050] On the basis of Example 1 and different from Example 1, Figures 4-5 As shown, the diameter of the sliding hole 223 in this embodiment is larger than the diameter of the projection surface of the sliding rod 31 in the direction of the opening of the sliding hole 223 , so that the sliding hole 223 also has a liquid discharge function, further improving the liquid discharge efficiency of the liquid outlet cavity 222 .

[0051] Because the diameter of the sliding rod 31 is shortened, its structural strength will be weakened. In the case of only one contact surface, it is easy to deform due to stress concentration, which affects the normal operation of this embodiment. Therefore, the sliding rod 31 is provided with a stable top plate 4 for contacting with the replenished liquid 22 to provide an additional contact surface between the linkage control structure 3 and the replenished liquid 22, helping the sliding rod 31 to share the load. A number of reinforcing ribs 5 are provided between the stable top plate 4 and the sliding rod 31. Each of the reinforcing ribs 5 is evenly distributed around the sliding rod 31. The function of the reinforcing ribs 5 is to evenly distribute the load of the stable top plate to the sliding rod 31, avoiding local stress concentration, thereby improving the ability of the structure to withstand external forces during operation; the uniform distribution of the reinforcing ribs 5 helps to balance the force between the sliding rod 31 and the stable top plate 4, avoiding the problem of excessive local stress, thereby preventing local damage or structural deformation. The projection surface of the stable top plate 4 in the axial direction of the sliding rod 31 is an annular structure, so that the slurry flowing along the surface of the sliding rod 31 can flow directly to the liquid level float 23 and slide all the way into the slurry pool 11, reducing the probability of the slurry contacting the stable top plate 4, thereby reducing the probability of the slurry remaining on the stable top plate 4.

[0052] Example 3

[0053] On the basis of Example 1 or Example 2, Figures 6 to 8As shown, the sliding rod 31 in this embodiment includes a first branch rod 311, a second branch rod 312, and an elastic buffer 313. The two ends of the elastic buffer 313 are respectively fixedly connected to the first branch rod 311 and the second branch rod 312. The elastic buffer 313 is preferably an elastic member that can easily absorb the force in the axial direction to ensure that it can effectively play a buffering role and absorb the impact force generated by the abutment (collision) between the blocking body 32 and the replenished liquid 22. The elastic buffer 313 can provide damping force and supporting force during the compression process, which helps to maintain the overall stability of the sliding rod 31 and reduce shaking and bumps caused by impact.

[0054] The first sub-rod 311 is provided with a positioning shaft 314, and the second sub-rod 312 is provided with a positioning hole 315. The positioning shaft 314 is located in the positioning hole 315 and is slidingly connected to the second sub-rod 312 to avoid the overall structure of the sliding rod 31 in this embodiment from being misaligned during the compression buffering process, which affects the normal use of this embodiment.

[0055] The distance between the end of the positioning hole 315 away from the first sub-rod 311 and the first sub-rod 311 is greater than the axial length of the positioning shaft 314, avoiding collision between the positioning shaft 314 and the positioning hole 315 in the axial direction, and reserving sufficient compression deformation space for the sliding rod 31 in this embodiment.

[0056] The elastic buffer 313 is sleeved on the positioning shaft 314 to realize the restraining effect on the elastic buffer 313, prevent it from bending deformation in the circumferential surface direction, limit the deformation direction of the elastic buffer 313, and enable it to provide more effective damping force and supporting force.

[0057] Example 4

[0058] In view of the device proposed in Example 1, Example 2 or Example 3, this embodiment proposes a method for adjusting the liquid level of a desulfurization system, which mainly includes the following steps:

[0059] Step 1: Start the first water pump 7 for providing slurry to the replenishing tank 21, and transport the slurry to the replenishing tank 21 to ensure that there is enough slurry in the replenishing tank 21 to replenish the slurry at any time.

[0060] Step 2: The slurry in the replenishment box 21 flows into the replenishment liquid 22 through the replenishment pipe 24, realizing the transfer of the slurry, so that the replenishment of the slurry is limited, and the replenishment work will not be carried out continuously, avoiding excessive liquid level due to excessive replenishment, and adjusting the slurry level in the replenished slurry pool 11 to a reasonable position.

[0061] Step three: the liquid level float 23 located in the slurry pool 11 drops due to the drop in the liquid level in the slurry pool 11, thereby opening the outlet 2221 for replenishing the liquid 22, allowing the slurry to flow into the slurry pool 11, causing the liquid level in the slurry pool 11 to return to normal, driving the liquid level float 23 to rise again, closing the outlet 2221 for replenishing the liquid 22, stopping the slurry replenishment work, and completing the liquid level adjustment inside the tower body 1. The slurry replenishment work during the liquid level adjustment process will be started or stopped in real time according to the slurry level in the slurry pool 11, and the liquid level adjustment work can be accurately achieved.

[0062] Step 4: After the slurry in the slurry pool 11 is consumed as the tower body 1 works, the internal liquid level thereof drops, and step 3 is restarted so that the slurry level in the slurry pool 11 is maintained at a specified position, thereby enabling the tower body 1 to maintain a high-efficiency working mode.

[0063] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A desulfurization system liquid level adjustment device, comprising a tower body (1), wherein the tower body (1) comprises a slurry pool (11), characterized in that: The tower body (1) is provided with an automatic replenishing mechanism (2), the automatic replenishing mechanism (2) comprising a replenishing box (21), replenished liquid (22), and a liquid level float (23); a replenishing pipe (24) is provided between the replenishing box (21) and the tower body (1); the replenished liquid (22) is fixedly connected to the inside of the tower body (1) and communicated with the replenishing pipe (24); the liquid level float (23) is located in the slurry pool (11), and a linkage control structure (3) is provided between the liquid level float (23) and the replenished liquid (22) for controlling the slurry in the replenished liquid (22) to flow into the slurry pool (11).

2. The desulfurization system liquid level adjustment device according to claim 1, characterized in that: The replenishing liquid outlet (22) comprises a communication cavity (221) and a liquid outlet cavity (222), the replenishing pipe (24) is in communication with the communication cavity (221), the liquid outlet cavity (222) comprises a liquid outlet (2221) for allowing slurry to flow out of the liquid outlet cavity (222), and a communication hole (2222) for interconnecting the liquid outlet cavity (222) and the communication cavity (221); The linkage control structure (3) comprises a sliding rod (31) and a blocking body (32); the liquid level float (23) and the blocking body (32) are respectively fixedly connected to the two ends of the sliding rod (31); the sliding rod (31) is slidingly connected to the replenished liquid (22); the blocking body (32) is located in the liquid outlet cavity (222) and is used to block the connecting hole (2222).

3. The desulfurization system liquid level adjustment device according to claim 2, characterized in that: The blocking body (32) comprises a blocking plate (321) and a positioning block (322); the blocking plate (321) is located between the positioning block (322) and the sliding rod (31); the diameter of the projection surface of the blocking plate (321) in the direction of the opening of the connecting hole (2222) is larger than the diameter of the connecting hole (2222); the longitudinal section of the positioning block (322) is a triangular structure and is located in the connecting hole (2222).

4. The desulfurization system liquid level adjustment device according to claim 2, characterized in that: A plurality of liquid outlets (2221) are provided, and each of the liquid outlets (2221) is evenly distributed around the circumference of the replenished liquid (22), and the projection surface of each of the liquid outlets (2221) in the direction of its opening is an arched structure.

5. The desulfurization system liquid level adjustment device according to claim 2, characterized in that: The replenishing liquid outlet (22) has a sliding hole (223), the sliding rod (31) is slidingly connected in the sliding hole (223), and the diameter of the sliding hole (223) is larger than the diameter of the projection surface of the sliding rod (31) in the direction of the opening of the sliding hole (223).

6. The desulfurization system liquid level adjustment device according to claim 2 or 5, characterized in that: The sliding rod (31) is provided with a stabilizing top plate (4) for contacting the replenished liquid (22), and a plurality of reinforcing ribs (5) are provided between the stabilizing top plate (4) and the sliding rod (31). The reinforcing ribs (5) are evenly distributed around the sliding rod (31) in a circumferential manner, and the projection surface of the stabilizing top plate (4) in the axial direction of the sliding rod (31) is an annular structure.

7. The desulfurization system liquid level adjustment device according to claim 6, characterized in that: The sliding rod (31) comprises a first branch rod (311), a second branch rod (312), and an elastic buffer (313); the first branch rod (311) is provided with a positioning shaft (314); the second branch rod (312) is provided with a positioning hole (315); the positioning shaft (314) is located in the positioning hole (315) and is slidingly connected to the second branch rod (312); the spacing between one end of the positioning hole (315) away from the first branch rod (311) and the first branch rod (311) is greater than the axial length of the positioning shaft (314); the two ends of the elastic buffer (313) are respectively fixedly connected to the first branch rod (311) and the second branch rod (312), and the elastic buffer (313) is sleeved on the positioning shaft (314).

8. The desulfurization system liquid level adjustment device according to claim 1 or 2, characterized in that: The replenishing pipe (24) is arranged at an angle, and the level of one end of the replenishing pipe (24) close to replenishing the liquid (22) is lower than the level of one end of the replenishing pipe (24) close to the replenishing tank (21).

9. The desulfurization system liquid level adjustment device according to claim 1, characterized in that: A drainage body (6) is provided at one end of the replenished liquid (22) away from the liquid level float (23), and the longitudinal section of the drainage body (6) is a triangular structure.

10. The liquid level adjustment method used in the desulfurization system liquid level adjustment device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Step 1: starting a first water pump (7) for providing slurry to the replenishing tank (21) to transport the slurry to the replenishing tank (21); Step 2: The slurry in the replenishment box (21) flows into the replenishment liquid (22) through the replenishment pipe (24), thereby realizing the transfer of the slurry; Step 3: The liquid level float (23) in the slurry pool (11) is affected by the drop in the liquid level in the slurry pool (11) and drops, thereby opening the liquid outlet (2221) for replenishing the liquid (22), allowing the slurry to flow into the slurry pool (11), causing the liquid level in the slurry pool (11) to return to normal, driving the liquid level float (23) to rise again, closing the liquid outlet (2221) for replenishing the liquid (22), stopping the slurry replenishment work, and completing the liquid level adjustment inside the tower body (1); Step 4: After the slurry in the slurry pool (11) is consumed as the tower body (1) works, the internal liquid level thereof drops, and step 3 is restarted.

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