A precipitation prevention and crystallization device for a wet flue gas desulfurization wastewater treatment system

Abstract

This invention relates to the field of wastewater treatment, and discloses an anti-precipitation and crystallization device for a wet flue gas desulfurization wastewater treatment system. The device includes a vessel body with an inlet, an outlet, and a drain. The vessel body is equipped with a disturbance mechanism and a heating mechanism. A deformable pad is laid at the bottom of the vessel body, and a slag discharge pipe is located at the center of the bottom. The middle part of the deformable pad is fixedly fitted onto the slag discharge pipe. The edge of the deformable pad is driven to rise and fall by a lifting mechanism. During the rising and falling process, the precipitated crystals adhering to the deformable pad are lifted and discharged from the slag discharge pipe. The anti-precipitation and crystallization device for a wet flue gas desulfurization wastewater treatment system provided by this invention achieves crystal detachment by the rising edge of the deformable pad, relying on the deformation of the pad and the slag discharge by gravity. This eliminates the need for a dedicated slag discharge mechanism, and the disturbance mechanism also does not require a lifting system, making the overall equipment more simplified.

Description

Technical Field

[0001] This invention relates to wastewater treatment technology, specifically to an anti-precipitation and crystallization device for a wet flue gas desulfurization wastewater treatment system. Background Technology

[0002] As is generally known, the mainstream wet desulfurization process for boilers and other sulfur-containing flue gases includes steps such as coagulation and sedimentation, filtration, and membrane system treatment. The freshwater produced after membrane system treatment is reused in production, while the concentrated wastewater is removed by evaporation. To save energy and improve efficiency, the concentrated wastewater is usually treated by multi-stage evaporation. However, since limestone is often used as a desulfurizing agent in flue gas desulfurization, specifically limestone or lime slurry, and the SO2 flue gas is sprayed and washed in the absorption tower, the SO2 in the flue gas reacts to form CaSO3 and CaSO4. During the reaction process, Ca2+ in the wastewater is released into the flue gas. 2 + Increased concentration. Multiple cycles of spray water can cause calcium ion concentrations to exceed 10,000 mg / L. This further leads to calcium precipitation and crystallization in the concentrate produced by membrane concentration after the first stage of evaporation in a multi-stage evaporation process. If not removed, this crystallization will gradually clog the evaporation system in subsequent stages.

[0003] Figure 1 A schematic diagram of an improved treatment mechanism in a prior art concentrate evaporation process, such as... Figure 1 As shown, it includes a vessel body installed between the first-stage evaporation unit and the second-stage evaporation unit. The concentrated wastewater produced by membrane concentration is first evaporated in the first stage, then treated in the vessel body of the improved treatment unit, and then enters the second-stage evaporation system. A crystallization-promoting agent is added to the wastewater as it enters the vessel body. Inside the vessel body, a heating mechanism first raises the temperature to 70-80°C, initiating calcium and magnesium salt crystallization. After salt crystallization, the wastewater is discharged. A scraper is installed at the bottom of the stirring blades of the agitator mechanism, and the scraper abuts against the bottom wall of the vessel body. Rotating the agitator mechanism scrapes the crystals from the bottom of the vessel body using the scraper. Finally, a chassis lifting system drives the bottom plate of the vessel body upward to raise the scraped crystal solids to a certain height. Simultaneously, the agitator mechanism rises to avoid the scraped crystals, which are then transported out through a slag discharge mechanism. Finally, water is sprayed from spray heads to flush the inside of the vessel body, and the flushed concentrated brine is collected for centralized treatment. After the above treatment, the wastewater entering the second-stage evaporation unit will hardly crystallize in the pipes, greatly reducing the cleaning tasks caused by pipe crystallization blockage and speeding up the production pace.

[0004] The shortcoming of the existing technology is that the existing vessel design is not suitable for the discharge of crystalline solids. In order to discharge crystals, the above-mentioned vessel not only needs to design a special slag discharge mechanism, but also needs to drive a disturbance mechanism to rise and avoid obstacles. At the same time, a composite bottom plate needs to be designed and a part of the bottom plate needs to be raised. The above-mentioned crystal discharge mechanism is too complicated overall. Summary of the Invention

[0005] The purpose of this invention is to provide an anti-precipitation and crystallization device for wet flue gas desulfurization wastewater treatment systems, so as to overcome the above-mentioned shortcomings in the prior art.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] An anti-precipitation and crystallization device for a wet flue gas desulfurization wastewater treatment system includes a vessel body with an inlet, an outlet, and a drain. The vessel body is equipped with a disturbance mechanism and a heating mechanism. A deformable pad is laid at the bottom of the vessel body, and a slag discharge pipe is located at the center of the bottom of the vessel body. The middle part of the deformable pad is fixedly sleeved on the slag discharge pipe. The edge of the deformable pad is driven to rise and fall by a lifting mechanism. During the rising and falling process, the precipitated crystals adhering to the deformable pad are lifted and discharged from the slag discharge pipe.

[0008] In the aforementioned anti-precipitation and crystallization device, a sliding ring is slidably connected to the bottom of the vessel body, the edge of the deformation pad is fixed to the sliding ring, and the lifting mechanism drives the deformation pad to rise and fall by driving the sliding ring.

[0009] In the aforementioned anti-precipitation and crystallization device, the deformable pad achieves deformation through elastic expansion and contraction.

[0010] In the aforementioned anti-precipitation and crystallization device, the unfolded area of ​​the deformation pad is larger than the area of ​​the bottom of the vessel body, so that deformation can be achieved through folding.

[0011] In the aforementioned anti-precipitation and crystallization device, the slag discharge pipe is vertically slidably connected to the reactor body, and the slag discharge pipe can be raised and lowered alternately with the lifting mechanism.

[0012] In the aforementioned anti-precipitation and crystallization device, when the deformable pad is deformed by folding, the lifting mechanism has a flattened position of the deformable pad during its lifting stroke. In the flattened position, the deformable pad unfolds into an inverted frustum shape.

[0013] In the aforementioned anti-precipitation and crystallization device, the bottom of the disturbance mechanism has an inclined surface, and the deformation pad has a scraping position during its lifting and lowering process. At the scraping position, the inclined surface of the disturbance mechanism is attached to the deformation pad.

[0014] In the aforementioned anti-precipitation and crystallization device, the lifting mechanism repeatedly moves up and down to cause the deformable pad to vibrate.

[0015] The aforementioned anti-precipitation and crystallization device includes a lifting mechanism comprising multiple hydraulic telescopic cylinders, and multiple hydraulic telescopic rods arranged in a circumferential array on the back side of the sliding ring.

[0016] In the above technical solution, the anti-precipitation and crystallization device for wet flue gas desulfurization wastewater treatment system provided by the present invention replaces the composite base plate with a fixed base plate and a deformable pad, and at the same time cooperates with the slag discharge pipe set in the middle of the deformable pad. In this way, by the rise of the edge part of the deformable pad, the crystals are detached by the deformation of the deformable pad and discharged from the slag discharge pipe in the middle by gravity. This eliminates the need for a dedicated slag discharge mechanism, and the disturbance mechanism does not need to be equipped with a lifting system. Both aspects reduce the corresponding mechanisms, making the overall equipment simpler. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0018] Figure 1 This is a schematic diagram of an improved treatment mechanism in a prior art concentrated water evaporation process;

[0019] Figure 2 This is a schematic diagram of the anti-precipitation and crystallization device provided in one embodiment of the present invention;

[0020] Figure 3 This is a schematic diagram of the structure of a deformable pad provided in one embodiment of the present invention;

[0021] Figure 4 A schematic diagram of the structure of the deformable pad provided in another embodiment of the present invention;

[0022] Figure 5 This is a schematic diagram of another state of the anti-precipitation and crystallization device provided in one embodiment of the present invention;

[0023] Figure 6 This is a schematic diagram of the anti-precipitation and crystallization device provided in another embodiment of the present invention.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Kettle body; 2. Agitation mechanism; 3. Heating mechanism; 4. Deformation pad; 5. Slag discharge pipe; 6. Lifting column; 7. Sliding ring; 8. Spring; 9. Vertical drive rod; 9.1. Upper section; 9.2. Lower section; 10. Telescopic pipe. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] like Figure 2-6 As shown in the figure, an anti-precipitation and crystallization device for a wet flue gas desulfurization wastewater treatment system provided by the present invention includes a vessel body 1 with an inlet, an outlet, and a drain. The vessel body 1 is provided with a disturbance mechanism 2 and a heating mechanism 3. A deformable pad 4 is laid at the bottom of the vessel body 1. A slag discharge pipe 5 is provided at the center of the bottom of the vessel body 1. The middle part of the deformable pad 4 is fixedly sleeved on the slag discharge pipe 5. The edge of the deformable pad 4 is driven to lift and lower by a lifting mechanism. During the lifting and lowering process, the precipitated crystals adhering to the deformable pad 4 are peeled off and discharged from the slag discharge pipe 5.

[0028] Specifically, the vessel body 1 is the main structure, equipped with an inlet, an exhaust port, and a drain port (not shown in the figure). The inlet and exhaust port are located at the top or middle of the vessel body 1. The inlet is used to input the concentrated water to be treated, and the exhaust port is used to expel the gas generated during the treatment process. The drain port is preferably located on the periphery of the bottom of the vessel body 1, so that the treated wastewater can be discharged by opening the drain port. Alternatively, it can be located at another position using a lifting pipe to move to the bottom for suction. Obviously, the inlet, exhaust port, and drain port are standard configurations of various vessel bodies 1 and are existing technologies, so they will not be described in detail. The agitation mechanism 2 generally includes a motor, a stirring shaft, and stirring blades connected in sequence. The stirring blades are located in the lower middle part of the vessel body 1 and are mainly used to stir the concentrated water. The heating mechanism 3 is a heating component located inside the vessel body 1 or integrated into the inner wall of the vessel body 1. The agitation mechanism 2 and the heating mechanism 3 are also common configurations of the vessel body 1 and are existing technologies, so they will not be described in detail. The innovation of this embodiment lies in the fact that a deformable pad 4 is laid on the bottom wall of the vessel body 1, and a slag discharge pipe 5 is set at the center of the bottom wall of the vessel body 1. That is, a central hole is opened in the middle of the deformable pad 4 and the slag discharge pipe 5 is located in the central hole. At the same time, the edge of the deformable pad 4 is attached to the side wall of the vessel body 1, that is, the deformable pad 4 covers the bottom wall of the vessel body 1. This embodiment also includes a lifting mechanism, which includes multiple driven lifting columns 6 such as hydraulic telescopic cylinders. The lifting columns 6 dynamically seal through the bottom wall of the vessel body 1, and the top of the lifting columns 6 is connected to the edge of the deformable pad 4. Thus, the synchronous lifting of multiple lifting columns 6 can drive the edge of the deformable pad 4 to rise and fall. In this embodiment, the deformable pad 4 has two deformable forms. One is, as shown in the figure... Figure 4 As shown, the deformable pad 4 is a pad made of elastic material. In its natural state, the deformable pad 4 is a circular structure or a frustum-shaped structure with a central hole. When the central part is fixed and the edge part is pulled upwards, breaking its natural state, it undergoes elastic deformation. That is, the deformable pad 4 deforms through elastic expansion and contraction. Secondly, as... Figure 5As shown, the deformable pad 4 is a flexible, frustum-shaped structure, such as flexible fabric. When the frustum-shaped structure is laid flat on a plane or on a frustum with inconsistent taper, it will fold or wrinkle. That is, the unfolded area of ​​the deformable pad 4 is larger than the area of ​​the bottom of the vessel body 1, so that deformation can be achieved through folding. When the deformable pad 4 is deformed by folding, the lifting stroke of the lifting mechanism has a flattened position of the deformable pad 4, which is generally also the top of the lifting stroke of the lifting mechanism. In the flattened position, the deformable pad 4 unfolds into an inverted frustum shape, that is, at this time the deformable pad 4 is in a fully unfolded state, and its surface is smooth and wrinkle-free. Correspondingly, in this embodiment, when the deformable pad 4 is an elastic material, the bottom of the vessel body 1 is preferably horizontal or inverted frustum-shaped so that the elastic deformable pad 4 can be laid flat and covered without being suspended. When the deformable pad 4 is a frustum-shaped flexible structure, it is only necessary to ensure that the bottom area of ​​the vessel body 1 is smaller than the area of ​​the deformable pad 4 in its natural state. In this embodiment, it is obvious that regardless of the shape, the outer circle of the deformable pad 4 is the same as the inner diameter of the vessel body 1.

[0029] In the anti-precipitation crystallization device provided in this embodiment, a large amount of crystals adhere to the deformable pad 4 during the crystallization process. After the crystallization is completed and the liquid is discharged, the edge of the deformable pad 4 is driven to rise and fall repeatedly by a lifting mechanism, while the slag discharge pipe 5 is opened. This brings two effects: first, regardless of whether the deformable pad 4 is deformed by elastic deformation or by folding and unfolding, the crystals adhering to the deformable pad 4 will peel off; second, during the repeated rising and falling of the edge of the deformable pad 4, its central area remains low. Under the driving force of gravity and deformation, the crystals are naturally discharged from the slag discharge pipe 5 without the need for an additional slag discharge mechanism. Obviously, it is also acceptable to set up negative pressure suction or spiral conveying as an auxiliary in the slag discharge pipe 5.

[0030] In this embodiment, when the lifting speed is appropriate, the repeated lifting and lowering of the lifting mechanism can cause the deformation pad 4 to vibrate. At this time, both the peeling of crystals and the discharge to the slag pipe 5 are smoother. This can be seen from experiments with limited speed, which will not be elaborated here.

[0031] It should also be noted that this embodiment does not require a dynamic seal between the outer circle of the deformable pad 4 and the inner wall of the vessel body 1, i.e., a preferred dynamic seal. However, a non-dynamic seal is also acceptable. This is because this embodiment is treating concentrated water, which contains a large amount of impurities. Therefore, the vessel body 1 does not need to be strictly cleaned before each treatment and is allowed to have residues from the previous cleaning. The negative effect of a non-dynamic seal is that a small amount of crystals will remain between the deformable pad 4 and the bottom wall of the vessel body 1. However, these small amounts of crystals can be dissolved in the subsequent spraying steps and will not accumulate in large quantities. Pursuing a strict dynamic seal also incurs costs.

[0032] The anti-precipitation and crystallization device for wet flue gas desulfurization wastewater treatment system provided in this embodiment of the invention replaces the composite base plate with a fixed base plate and a deformable pad 4, and is equipped with a slag discharge pipe 5 set in the middle of the deformable pad 4. In this way, the crystals are detached by the deformation of the deformable pad 4 due to the rise of the edge part of the deformable pad 4 and discharged by gravity from the slag discharge pipe 5 in the middle. This eliminates the need for a dedicated slag discharge mechanism and the disturbance mechanism 2 does not need to be equipped with a lifting system. Both aspects reduce the corresponding mechanisms, making the overall equipment simpler.

[0033] In another embodiment of the present invention, a sliding ring 7 is slidably connected to the bottom of the vessel body 1, and the edge of the deformation pad 4 is fixed to the sliding ring 7. The lifting mechanism drives the deformation pad 4 to lift by driving the sliding ring 7. The sliding ring 7 is a rigid structure, which has two effects: first, it facilitates the driving of the lifting column 6, and second, it enhances the strength of the edge part of the deformation pad 4.

[0034] In another embodiment of the present invention, the slag discharge pipe 5 is vertically slidably connected to the vessel body 1, that is, an opening is made in the bottom wall of the vessel body 1, and the slag discharge pipe 5 is dynamically and sealingly slidably connected in the opening. The top of the slag discharge pipe 5 is fixed to the center of the deformation pad 4, and the slag discharge pipe 5 can move up and down alternately with the lifting mechanism. This alternating movement is because if the slag discharge pipe 5 moves up and down synchronously with the lifting mechanism, the deformation pad 4, based on elastic deformation, will not deform. The movement of the slag discharge pipe 5 can increase the movement range of the central area of ​​the deformation pad 4, enrich the overall deformation form, and thus accelerate the crystallization peeling speed and slag discharge speed. In this embodiment, the lower end of the slag discharge pipe 5 can be connected to a movable structure such as a corrugated pipe or rubber tube to adapt to the movement of the slag discharge pipe 5. Meanwhile, the axial drive of the slag discharge pipe 5 is a simple reciprocating movement of a target, which is existing technology and will not be described in detail.

[0035] In another embodiment of the present invention, based on the ability of the slag discharge pipe 5 to rise and fall, the bottom of the disturbance mechanism 2 has an inclined surface, and the deformation pad 4 has a scraping position during its rising and falling process. At the scraping position, the inclined surface of the disturbance mechanism 2 is attached to the deformation pad 4. The ability of the slag discharge pipe 5 to rise and fall allows the middle part of the deformation pad 4 to rise to be attached to the bottom of the disturbance mechanism 2, and the corresponding sliding ring 7 on the other side rises to the edge position of the disturbance mechanism 2. At this time, if the deformation pad 4 is an elastic pad, the elastic pad is in an elastic deformation state; if the deformation pad 4 is a flexible structure, then this is the aforementioned flattened position. When the disturbance mechanism 2 is activated, the disturbance mechanism 2 can scrape the surface of the inverted frustum-shaped deformation pad 4, and the crystals can be scraped off and discharged almost in one go.

[0036] In the aforementioned embodiments, since the slag discharge pipe 5 and the lifting mechanism require different lifting rhythms, two sets of driving mechanisms must be configured. In another embodiment provided by the present invention, a set of driving mechanisms is provided to drive these two different targets and adapt to their different rhythms. The slag discharge pipe 5 is provided with a protruding plate, and a spring 8 is squeezed between the protruding plate and the outer wall of the vessel body 1. One function of the spring 8 is to keep the slag discharge pipe 5 at the lowest position of the lifting stroke in the initial state. It also includes a telescopic pipe 10 (such as two pipes movably connected to form a telescopic pipe 10). One end of the telescopic pipe 10 is rotatably connected to the slag discharge pipe 5, preferably rotatably connected to the protruding plate. The other end of the telescopic pipe 10 is rotatably connected to the lifting column 6. At the same time, a thick section is provided in the middle of the lifting pipe, and a groove is provided in the thick section so that the top of the vertical drive rod 9 is slidably limited in the groove. For example, the groove is a T-shaped groove, and the top of the vertical drive rod 9 is T-shaped. The top of the vertical drive rod 9 can slide axially along the groove and can also move vertically to drive the telescopic pipe 10 to move vertically. The vertical drive rod 9 is driven by a drive mechanism such as a hydraulic cylinder to move vertically up and down. In the initial state, the deformation pad 4 is laid flat on the bottom of the vessel body 1. At this time, the vertical drive rod 9 moves upward into the first stroke. At this time, due to the elastic force of the spring 8, the slag discharge pipe 5 is squeezed while the lifting column 6 is not squeezed. The lifting column 6 is driven to rise while the slag discharge pipe 5 remains stationary. Figure 5 As shown, the top of the vertical drive rod 9 slides within the groove, driving the telescopic tube 10 to swing at its connection point with the slag discharge pipe 5. When the lifting column 6 rises to a certain height, it enters the second stroke. At this point, when the driving force on the slag discharge pipe 5 (the driving force of the telescopic tube 10 plus the tension of the deformation pad 4) is greater than the resistance (gravity plus elastic force), the slag discharge pipe 5 also moves upward until it finally enters the aforementioned scraping position. During the descent stroke, due to the elastic force, the slag discharge pipe 5 descends and resets first. That is, in the above stroke, the slag discharge pipe 5 rises later but descends first. This causes the deformation pad 4 to have inconsistent rising and falling rhythms between the center and the edge to facilitate crystal detachment. On the other hand, the central area is always lower than the edge area, thus reducing working time and lowering the probability of crystals entering the space between the sliding ring 7 and the inner wall of the vessel 1 from the edge. The above results can be achieved solely by the rising and falling of the vertical drive rod 9. Obviously, the number of vertical drive rods 9 is the same as the number of lifting columns 6, and their movement rhythm is also completely consistent, as those skilled in the art can understand, and will not be elaborated further.

[0037] In the above embodiment, both the lifting column 6 and the slag discharge pipe 5 are provided with flange-like protruding plates. These protruding plates abut against the outer wall of the vessel body 1, preventing the lifting column 6 and the slag discharge pipe 5 from rising further. A further improvement in this embodiment is as follows: Figure 6As shown, the vertical drive rod 9 is configured with an upper section 9.1 and a lower section 9.2 rotatably connected. The top sliding limit of the upper section 9.1 is located in the sliding groove, while the lower section 9.2 is driven to move vertically. The advantage of this configuration is that, since the lifting column 6 is fixed to the sliding ring 7, it can only move vertically. However, the slag discharge pipe 5 is configured to rotate on the vessel body 1. That is, the slag discharge pipe 5 is sleeved on the vessel body 1 and can both slide and rotate. However, the slag discharge pipe 5 is limited by the deformation pad 4 and the telescopic pipe 10, so that the slag discharge pipe 5 can only rotate a very small angle, such as less than 30 degrees or even 15 degrees. Thus, during the upward stroke of the vertical drive rod 9, since the upper section 9.1 is allowed to swing, it can not only drive the lifting column 6 and the slag discharge pipe 5 to rise, but also drive the slag discharge pipe 5 to rotate to a limited extent. The rotation of the slag discharge pipe 5 can force the deformation pad 4 to deform circumferentially. Especially for the elastic deformation pad 4, the circumferential deformation plus the original radial deformation can significantly improve the crystallization peeling speed.

[0038] In this embodiment, in order to allow the slag discharge pipe 5 to swing, the rotating connection mechanism between the telescopic pipe 10 and the slag discharge pipe 5 has a movement space in the circumferential direction of the slag discharge pipe 5. The chute should also reserve a certain swing space at the top of the upper section 9.1. However, both spaces are small, and a small gap is reserved in the fit. For example, if the width of the chute is 10cm and the top width of the upper section 9.1 is 7cm, a gap is reserved. The rotating shaft and the through hole of the rotating connection mechanism also correspond. For example, the radial dimension of the rotating shaft is four-fifths of the radial dimension of the through hole. A fit gap is reserved to allow circumferential swing at a limited angle.

[0039] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A device for preventing sedimentation and crystallization in a wet flue gas desulfurization wastewater treatment system, comprising a vessel body with an inlet, an outlet, and a drain, wherein the vessel body is provided with a disturbance mechanism and a heating mechanism, characterized in that, The bottom of the vessel is covered with a deformable pad, and a slag discharge pipe is provided in the center of the bottom of the vessel. The middle part of the deformable pad is fixed to the slag discharge pipe. The edge of the deformable pad is driven by a lifting mechanism to lift and lower. During the lifting and lowering process, the precipitated crystals adhering to the deformable pad are peeled off and discharged from the slag discharge pipe.

2. The anti-precipitation and crystallization device according to claim 1, characterized in that, A sliding ring is slidably connected to the bottom of the vessel body, and the edge of the deformation pad is fixed to the sliding ring. The lifting mechanism drives the deformation pad to rise and fall by driving the sliding ring.

3. The anti-precipitation and crystallization device according to claim 2, characterized in that, The deformable pad deforms through elastic expansion and contraction.

4. The anti-precipitation and crystallization device according to claim 2, characterized in that, The unfolded area of ​​the deformation pad is larger than the area of ​​the bottom of the vessel body so that deformation can be achieved through folding.

5. The anti-precipitation and crystallization device according to any one of claims 2-4, characterized in that, The slag discharge pipe is vertically slidably connected to the vessel body, and the slag discharge pipe can be raised and lowered alternately with the lifting mechanism.

6. The anti-precipitation and crystallization device according to claim 4, characterized in that, The deformable pad has an inverted frustum shape.

7. The anti-precipitation and crystallization device according to claim 6, characterized in that, When the deformable pad is deformed by folding, the lifting stroke of the lifting mechanism has a flattened position of the deformable pad, in which the deformable pad unfolds into an inverted frustum shape.

8. The anti-precipitation and crystallization device according to claim 5, characterized in that, The bottom of the disturbance mechanism has an inclined surface, and the deformation pad has a scraping position during its lifting and lowering process. At the scraping position, the inclined surface of the disturbance mechanism is attached to the deformation pad.

9. The anti-precipitation and crystallization device according to claim 1, characterized in that, The lifting mechanism repeatedly raises and lowers to cause the deformable pad to vibrate.

10. The anti-precipitation and crystallization device according to claim 2, characterized in that, The lifting mechanism includes multiple hydraulic telescopic cylinders, which are arranged in a circumferential array on the back side of the sliding ring.

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