Cement kiln waste heat power generation circulating water descaling device
By using a multi-channel softening and mixing section structure, combined with an ion exchange layer, a turbulent fluid, and a drive motor stirring shaft, the problem of poor mixing effect of chemical agents is solved, and scale is effectively prevented and cleaned during the waste heat power generation process of cement kilns, thereby improving heat exchange efficiency and equipment life.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- NANJING GONGCHENG RES INST OF ENERGY CONSERVATION & NEW MATERIALS TECH CO LTD
- Filing Date
- 2025-04-03
- Publication Date
- 2026-04-28
AI Technical Summary
Existing chemical agents have poor mixing effects with circulating water, leading to scale formation during the waste heat power generation process in cement kilns, which affects equipment blockage and heat exchange efficiency.
It adopts a multi-channel softening section and mixing section structure, combined with an ion exchange layer, a turbulent fluid, and a drive motor stirring shaft to improve the mixing uniformity of the reagent and circulating water, and removes the scale that has formed through a high-frequency electromagnetic field descaling structure.
It effectively prevents scale formation, improves heat exchange efficiency, reduces the amount of chemicals used, and extends the service life of equipment.
Smart Images

Figure CN224172532U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of circulating water descaling technology, specifically a descaling device for circulating water in cement kiln waste heat power generation. Background Technology
[0002] When using waste heat from cement kilns for power generation, the circulating water is prone to calcium and magnesium ions precipitating out as it heats up, forming scale. This can lead to equipment blockage or affect the heat exchanger's efficiency. Current methods typically use chemical agents to prevent scale formation; however, these methods are ineffective at mixing the circulating water, requiring increased amounts of chemicals, resulting in waste or water quality deterioration.
[0003] Therefore, this utility model provides a descaling device for circulating water in cement kiln waste heat power generation to solve the above problems. Utility Model Content
[0004] The technical problem to be solved by this utility model is that the existing scale inhibitors have poor mixing effect with circulating water after being added.
[0005] This utility model provides the following technical solution: a descaling device for circulating water in cement kiln waste heat power generation, comprising a substrate, a scale inhibition structure and a descaling structure. The descaling structure for removing scale is installed in the substrate. An inlet and an outlet are respectively fixedly installed on both sides of the substrate in a staggered and eccentric manner. The scale inhibition structure for rapidly mixing scale inhibitor after softening water is installed in the substrate.
[0006] The scale inhibition structure includes a softening section and a mixing section. The softening section, which has multiple channels for parallel water softening, is fixedly installed on the outside of the substrate at the water inlet position. The mixing section, which contains a mixture of liquid and scale inhibitor, is coaxially installed inside the substrate.
[0007] The mixing unit includes a mixing body, a drive motor, and a stirring shaft. The drive motor is fixedly installed on the outside of the substrate, located on one side of the outlet. The stirring shaft is coaxially rotatably installed inside the substrate. The mixing body is fixedly connected to the inlet on the outside of the substrate. The mixing body can improve the mixing effect of circulating water and chemicals. The drive motor and stirring shaft can further mix the circulating water and chemicals in the substrate, further improving the mixing effect of chemicals.
[0008] The softening section includes multiple distribution pipes and an ion exchange layer. These distribution pipes are connected in parallel to the inlet via the mixing body. An ion exchange layer is fixedly installed inside each distribution pipe. The multiple distribution pipes, in conjunction with the ion exchange layer, form a multi-channel softened circulating water system, ensuring efficient treatment of the circulating water and preventing scale buildup caused by reduced flow rate.
[0009] The mixing system includes a pipe body and a turbulent fluid. Multiple branch pipes are connected in parallel to the side of the pipe body away from the inlet. A first reagent inlet is fixedly connected to the side of the pipe body near the branch pipes. The turbulent fluid is fixedly installed inside the pipe body. The turbulent fluid inside the pipe body causes the circulating water to continuously change direction when mixing with the reagent, thereby ensuring uniform mixing and improving the mixing effect.
[0010] The descaling structure includes a main unit and a secondary unit. The main unit is fixedly installed outside the substrate, and the secondary unit is fixedly installed inside the substrate.
[0011] A filter screen is detachably and fixedly installed at the water inlet and / or water outlet.
[0012] The bottom wall of the substrate has a funnel structure, and a drain outlet is fixedly installed at the bottom of the substrate, with a drain valve fixedly installed at the drain outlet.
[0013] The substrate is fixedly connected to a second drug inlet on the side near the water inlet.
[0014] The turbulent fluid is either a plate-like structure with opposing staggered arrangement smaller than the diameter of the tube or a spiral blade structure, which enables the circulating water to continuously turn when mixing chemical reagents to improve the mixing effect, thereby avoiding scale buildup that could cause blockages or affect heat exchange efficiency.
[0015] The beneficial effects of this utility model are as follows:
[0016] 1. This utility model uses multiple parallel diversion pipes in conjunction with an ion exchange layer to introduce a mixture, thereby softening the water quality while ensuring the circulating water flow rate. It also allows the circulating water to contact the scale inhibitor in the mixture and continuously turn along the turbulent flow to generate turbulence, improving the mixing effect and uniformity of the circulating water and scale inhibitor, which helps to prevent scale formation during use. At the same time, after entering the matrix, the circulating water and scale inhibitor are also stirred by the drive motor and stirring shaft, further improving the mixing uniformity and thus enhancing the mixing effect and preventing scale formation.
[0017] 2. In the heated evaporation zone, this utility model improves the mixing effect of circulating water and scale inhibitor by combining sufficient structure and descaling structure. At the same time, it can also drive the descaling agent to dissolve scale evenly through the drive motor and stirring shaft to avoid residue. The scale is then cleaned by the main unit or auxiliary unit electromagnetically and discharged through the drain valve and drain port. This solves the problem of scale accumulation while avoiding scale increase, which helps to avoid blockage and improve heat exchange efficiency. Attached Figure Description
[0018] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.
[0019] Figure 1 This is a cross-sectional structural diagram of Embodiment 1 of the present invention;
[0020] Figure 2 This is a cross-sectional structural diagram of Embodiment 2 of this utility model.
[0021] In the diagram: 1. Matrix; 11. Inlet; 12. Outlet; 13. Second reagent inlet; 2. Scale inhibition structure; 21. Softening section; 211. Diverter pipe; 212. Ion exchange layer; 22. Mixing section; 221. Mixture; 2211. Pipe body; 2212. Turbulent fluid; 2213. First reagent inlet; 222. Drive motor; 223. Stirring shaft; 3. Descaling structure; 31. Main unit; 32. Auxiliary unit; 33. Funnel structure; 34. Drain outlet; 35. Drain valve; 4. Heating evaporation source; 5. Filter screen. Detailed Implementation
[0022] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely represents some embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0023] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.
[0024] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," "outer," and "back side," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the product of this utility model is conventionally placed during use. These terms are used only for the convenience of describing this utility model and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation; therefore, they should not be construed as limitations on this utility model.
[0025] It should also be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.
[0026] Based on the existing technical problem of poor mixing effect between scale inhibitors and circulating water after addition, this disclosure provides a scale removal device for circulating water of cement kiln waste heat power generation, including a substrate 1, a scale inhibition structure 2, and a scale removal structure 3. The scale removal structure 3 for removing scale is installed in the substrate 1. An inlet 11 and an outlet 12 are respectively fixedly installed on both sides of the substrate 1 in a staggered and eccentric manner. The scale inhibition structure 2 with multiple channels for rapid mixing of scale inhibitors after softening water is installed in the substrate 1.
[0027] In this embodiment, the descaling structure 3 can be any existing structure or device capable of removing existing scale, such as an electronic descaling device. In this embodiment, a wound-type electronic descaling device is specifically used, fixedly wound around the outside of the base 1, thereby utilizing an electromagnetic field to act on the water flow. Since this electronic descaling device is existing technology, it will not be described in detail here.
[0028] The scale inhibition assembly includes a softening section 21 composed of multiple parallel pipes and a mixing section 22. The softening section 21, with multiple channels for parallel water softening, is fixedly installed on the outside of the substrate 1 at the water inlet. The mixing section 22, containing the mixed liquid and scale inhibitor, is coaxially installed inside the substrate 1. It should be noted that the multiple parallel pipes form a multi-channel circulating water system, thereby ensuring both the purification effect on the circulating water and maintaining a stable circulating water flow rate, preventing sedimentation and scale formation due to reduced flow rate.
[0029] The circulating water used for cement kiln preheating power generation enters through inlet 11 of the substrate 1 and flows out through outlet 12. Before entering through inlet 11, the circulating water first enters the softening section 21. The multi-channel parallel softening section 21 ensures purification while maintaining a stable water flow rate to prevent sedimentation and scale formation. Then, the circulating water enters the mixing section 22 to mix with the scale inhibitor. The mixing section 22 allows the scale inhibitor and circulating water to mix rapidly, improving the mixing effect and further preventing scale formation during the flow of the circulating water.
[0030] The mixing section 22 includes a mixing body 221, which is fixedly connected to the water inlet 11 outside the base 1.
[0031] The softening section 21 includes a diversion pipe 211 and an ion exchange layer 212. Multiple diversion pipes 211 are provided, and multiple diversion pipes 211 are connected in parallel to the inlet 11 through the mixing body 221. The ion exchange layer 212 is fixedly installed inside the diversion pipe 211.
[0032] The ion exchange layer 212 can be filled with any structure or material in the prior art that can adsorb calcium and magnesium ions in water. In this embodiment, the ion exchange layer 212 is filled with ion exchange resin, such as chelating resin, to adsorb calcium and magnesium ions in water.
[0033] The circulating water enters multiple parallel branch pipes 211 simultaneously and is purified through the ion exchange layer 212 to remove calcium and magnesium ions from the water, thereby preventing scale formation. Then the circulating water enters the mixing body 221 and is mixed with the scale inhibitor to further prevent scale formation.
[0034] The reason why multiple branch pipes 211 are connected in parallel to the mixture 221 is that during the process of softening water, the ion exchange layer 212 itself forms a bed that easily reduces the water flow rate. Therefore, multiple branch pipes 211 are connected in parallel to improve the water softening effect of the ion exchange layer 212, thereby ensuring that the flow rate of the circulating water is stable after softening and will not decrease to produce sediment, thus avoiding the formation of scale.
[0035] It should be noted that the total diameter of the multiple branch pipes 211 is greater than that of the pipe body 2211.
[0036] The mixture 221 includes a pipe body 2211 and a turbulent fluid 2212. The plurality of branch pipes 211 are connected in parallel to the side of the pipe body 2211 away from the inlet 11. The side of the pipe body 2211 near the branch pipes 211 is fixedly connected to a first agent inlet 2213 for inputting scale inhibitor. The turbulent fluid 2212 is fixedly installed inside the pipe body 2211.
[0037] The circulating water in the diversion pipe 211, after being purified by the ion exchange layer 212, enters the pipe body 2211 for merging and mixing with the scale inhibitor introduced through the chemical inlet. The circulating water and scale inhibitor are separated or rotated within the pipe body 2211 by the turbulent flow 2212, thereby improving the mixing effect and inhibiting scale formation. By first removing most calcium and magnesium ions through the ion exchange layer 212 and then treating the remaining ions with the scale inhibitor, the scale prevention effect is maximized. Furthermore, removing most calcium and magnesium ions through the ion exchange layer 212 first reduces the amount of scale inhibitor used.
[0038] The scale inhibitor can employ any existing technology that can adsorb onto the growth sites of scale crystals through crystal distortion and dispersion, interfering with the normal growth of crystals, inhibiting their aggregation into large scale particles, thereby inhibiting the crystallization and precipitation of calcium and magnesium ions and preventing the formation of scale.
[0039] The turbulent fluid 2212 can also be configured as plate-like structures smaller than the diameter of the pipe body 2211 through an alternating arrangement of the plate-like structures. This allows the circulating water to flow in an S-shaped trajectory within the pipe body 2211 and mix with the scale inhibitor. Furthermore, the alternating arrangement of the plate-like structures 2212 causes the circulating water to continuously change direction during the mixing process with the scale inhibitor, thereby generating turbulence and improving the mixing effect with the scale inhibitor.
[0040] During the descaling process of circulating water, the circulating water is first split into different branch pipes 211 and comes into contact with the ion exchange layer 212. The ion exchange layer 212 adsorbs calcium and magnesium ions in the water, softening the water quality. Then, the softened circulating water from the multiple branch pipes 211 flows in parallel into the pipe body 2211 for merging. The merging circulating water in the pipe body 2211, along with the scale inhibitor introduced through the first agent inlet 2213, flows synchronously along the turbulent fluid 2212 within the pipe body 2211. This allows for a spiral linear flow along the helical blade structure of the turbulent fluid 2212, continuously changing direction to increase mixing and improve the effectiveness of the scale inhibitor. The circulating water mixed with the scale inhibitor in the pipe body 2211 enters the substrate 1 through the inlet 11 and then flows out through the outlet 12 for further treatment.
[0041] Example 2: Based on Example 1 above, Example 2 only describes the differences from Example 1, and the similarities will not be repeated.
[0042] The mixing section 22 also includes a drive motor 222 and a stirring shaft 223. The drive motor 222 is fixedly installed on the outside of the base 1 on one side of the outlet 12. The stirring shaft 223 is coaxially rotatably installed inside the base 1. The mixing body 221 is fixedly connected to the inlet 11 outside the base 1.
[0043] In this embodiment, the turbulent fluid 2212 employs helical blades, allowing the circulating water to flow spirally along the surface of the helical blades. This enhances the mixing effect with the scale inhibitor, thereby improving the ability to suppress scale formation. Furthermore, the turbulent fluid 2212 can also employ any other structure in the prior art capable of agitating the water flow, causing it to be continuously divided or rotated to generate turbulence.
[0044] The circulating water in the diversion pipe 211, after being purified by the ion exchange layer 212, enters the pipe body 2211 for merging and mixing with the scale inhibitor introduced into the first reagent inlet 2213. This causes the circulating water and scale inhibitor to be redirected by the turbulent fluid 2212 within the pipe body 2211, thereby improving the mixing effect of the circulating water and scale inhibitor. After the circulating water and scale inhibitor enter the substrate 1 through the inlet 11 of the substrate 1 from the pipe body 2211, the drive motor 222 drives the stirring shaft 223 to rotate, thereby mixing the circulating water and scale inhibitor, further improving the mixing effect of the circulating water and scale inhibitor, and further enhancing the effect of inhibiting scale formation.
[0045] During the circulation of water, in the heating and evaporation source 4, such as the heat exchanger area, the water temperature rises rapidly due to the heating of the heat exchanger, causing the dissolved calcium and magnesium ions in the water to become supersaturated. This makes it easier for calcium and magnesium ions to precipitate and deposit in the circulating water in the heat exchanger area, forming scale. Therefore, a base 1 is fixedly installed in the heat exchanger area, with the heat exchanger contacting the surface of the base 1. A descaling mechanism is fixedly installed inside the base 1.
[0046] The descaling structure 3 includes a main unit 31 and a secondary unit 32. The main unit 31 is fixedly installed outside the base 1, and the secondary unit 32 is fixedly installed inside the base 1. The main unit 31 uses a high-frequency power generator to generate high-frequency electromagnetic signals; the secondary unit 32 uses an alternating electric field transducer containing electrodes or coils, connected to the main unit 31 via a high-frequency cable, to transmit electromagnetic signals into the water for water flow processing. Alternatively, the descaling structure 3 can also employ any existing structure or equipment capable of removing scale.
[0047] It should be noted that the auxiliary unit 32 can also be fixedly installed outside the base 1. The main unit 31 generates a modulation signal of a specific frequency, which is converted into an alternating electromagnetic pulse by the coil wound inside the auxiliary unit 32, forming an electromagnetic field covering the water flow, thereby removing scale by resonating the electromagnetic pulse with the ions in the water.
[0048] Since the substrate 1 is located near the heating evaporation source 4, scale easily forms. The main unit 31 generates a high-frequency electromagnetic signal, which is transmitted to the auxiliary unit 32. This electromagnetic signal acts on the circulating water, altering the electrochemical characteristics and physical structure of calcium and magnesium ions, reducing their adsorption capacity, and preventing scale formation. Simultaneously, for existing scale, the electromagnetic field can disrupt its crystal structure, causing it to gradually soften and detach, achieving a descaling effect. This effectively cleans the scale within the substrate 1 and prevents its formation, thus avoiding blockages, corrosion, and reduced thermal conductivity caused by scale, thereby extending its service life.
[0049] The bottom wall of the substrate 1 has a funnel structure 33, and a drain port 34 is fixedly installed at the bottom of the substrate 1. A drain valve 35 is fixedly installed at the drain port 34. It should be noted that the heating evaporation source 4 is located on the non-bottom surface of the substrate 1. In this embodiment, the heating evaporation source 4, i.e., the heat exchanger, is located at the top of the substrate 1.
[0050] When the descaling structure 3 removes the scale that has already formed in the substrate 1, the scale can converge towards the funnel structure 33 and be discharged along the funnel structure 33 and the drain port 34. The operator can periodically open the drain valve 35 to allow the scale to be discharged from the funnel structure 33 and the drain port 34.
[0051] The substrate 1 is fixedly connected to a second agent inlet 13 for inputting descaling agent on the side near the water inlet 11. A chelating agent is input through the second agent inlet 13, and then the drive motor 222 drives the stirring shaft 223 to rotate, so that the scale inhibitor and circulating water are mixed at the same time, and the chelating agent is stirred, so that the chelating agent can fully contact the scale in the substrate 1 and dissolve the scale, thereby removing the scale that has been generated in the substrate 1 and avoiding corrosion and reduced heat conduction performance caused by scale formation.
[0052] The descaling agent can be any structure or substance in the prior art that can separate calcium and magnesium ions. For example, in the embodiments of this disclosure, a chelating agent is used to separate calcium and magnesium ions from the scale through complexation, so that they are dispersed in the water.
[0053] In the embodiments disclosed herein, chelating agents and scale inhibitors, both of which are polycarboxylic acid derivatives, are selected. This allows the chelating agents and scale inhibitors to work synergistically, dissolving existing scale and solving the problem of scale accumulation while inhibiting crystal growth to prevent the formation of new scale and thus solving the problem of scale increase.
[0054] A filter screen 5 is detachably and fixedly installed at the inlet 11 and / or outlet 12. The filter screen 5 removes suspended solids or particulate matter from the circulating water, thereby preventing clogging and optimizing heat exchange. Furthermore, it works in conjunction with the scale inhibitor structure 2 and the descaling structure 3 to prevent suspended solids and particulate matter from adsorbing or consuming scale inhibitors or chelating agents, thus improving agent utilization and reducing agent usage.
[0055] During the descaling process of circulating water, the circulating water is first split into different diversion pipes 211 and comes into contact with the ion exchange layer 212. The ion exchange layer 212 adsorbs calcium and magnesium ions in the water to soften the water quality. Then, the softened circulating water from the multiple diversion pipes 211 flows in parallel into the pipe body 2211 to merge. The circulating water merging in the pipe body 2211 and the scale inhibitor introduced into the first agent inlet 2213 in the pipe body 2211 flow synchronously along the turbulent fluid 2212 in the pipe body 2211. This allows the turbulent fluid 2212, which is arranged in a spiral linear or S-shaped trajectory along the staggered spiral blade structure or plate structure, to continuously change direction and improve the mixing degree, which is beneficial to improving the effect of the scale inhibitor. The circulating water, mixed with the scale inhibitor in pipe 2211, enters the substrate 1 through inlet 11. It is then further agitated by the drive motor 222 and stirring shaft 223, enhancing the mixing of the circulating water and scale inhibitor. Simultaneously, a chelating agent is introduced through the second agent inlet 13 within the substrate 1, also receiving agitation from the drive motor 222 and stirring shaft 223. This ensures thorough and uniform contact with the scale already formed in the substrate 1, effectively dissolving the scale and improving the removal efficiency. This prevents corrosion and reduced thermal conductivity caused by scale formation. The circulating water in the substrate 1 flows out through outlet 12 for further treatment.
[0056] Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.
Claims
1. A descaling device for circulating water in cement kiln waste heat power generation, comprising a substrate (1), a scale inhibition structure (2), and a descaling structure (3), wherein the scale removal structure (3) is installed inside the substrate (1), characterized in that: The substrate (1) has an inlet (11) and an outlet (12) fixedly installed on both sides of the substrate (1) in a staggered and eccentric manner. The substrate (1) is equipped with a scale inhibition structure (2) that has multiple channels for rapidly mixing scale inhibitors after softening water. The scale inhibition structure includes a softening section (21) and a mixing section (22). The softening section (21) with multiple channels for parallel water softening is fixedly installed on the outside of the substrate (1) at the water inlet position. The mixing section (22) for mixing liquid and scale inhibitor is coaxially installed inside the substrate (1).
2. The descaling device for circulating water in cement kiln waste heat power generation according to claim 1, characterized in that: The mixing section (22) includes a mixing body (221), a drive motor (222), and a stirring shaft (223). The drive motor (222) is fixedly installed on the outside of the base (1) on one side of the outlet (12). The stirring shaft (223) is coaxially rotatably installed inside the base (1). The mixing body (221) is fixedly connected to the inlet (11) outside the base (1).
3. The descaling device for circulating water in cement kiln waste heat power generation according to claim 2, characterized in that: The softening section (21) includes a diversion pipe (211) and an ion exchange layer (212). Multiple diversion pipes (211) are provided, and multiple diversion pipes (211) are connected in parallel to the inlet (11) through the mixture (221). An ion exchange layer (212) is fixedly installed inside the diversion pipe (211).
4. The descaling device for circulating water in cement kiln waste heat power generation according to claim 3, characterized in that: The mixture (221) includes a pipe body (2211) and a turbulent fluid (2212). The plurality of branch pipes (211) are connected in parallel to the side of the pipe body (2211) away from the inlet (11). The pipe body (2211) is fixedly connected to a first agent inlet (2213) on the side near the branch pipe (211). The turbulent fluid (2212) is fixedly installed inside the pipe body (2211).
5. The descaling device for circulating water in cement kiln waste heat power generation according to claim 4, characterized in that: The descaling structure (3) includes a main unit (31) and a secondary unit (32). The main unit (31) is fixedly installed outside the base (1), and the secondary unit (32) is fixedly installed inside the base (1).
6. The descaling device for circulating water in cement kiln waste heat power generation according to claim 5, characterized in that: A filter screen (5) is detachably and fixedly installed at the inlet (11) and / or outlet (12).
7. The descaling device for circulating water in cement kiln waste heat power generation according to claim 6, characterized in that: The bottom wall of the substrate (1) is funnel-shaped (33), and a drain outlet (34) is fixedly installed at the bottom of the substrate (1). A drain valve (35) is fixedly installed at the drain outlet (34).
8. The descaling device for circulating water in cement kiln waste heat power generation according to claim 7, characterized in that: The substrate (1) has a second drug inlet (13) fixedly connected to the side near the water inlet (11).
9. A descaling device for circulating water in cement kiln waste heat power generation according to claim 8, characterized in that: The turbulent fluid (2212) is a plate-like structure with a diameter smaller than that of the tube (2211) arranged in opposite staggered configurations.
10. A descaling device for circulating water in cement kiln waste heat power generation according to claim 8, characterized in that: The turbulent fluid (2212) has a helical blade structure.