Forced evaporator capable of preventing inner wall from scaling
By installing an annular water distribution plate and an overflow weir structure inside the forced evaporator, the problem of scale formation on the inner wall is solved, the inner wall is effectively flushed, pipeline blockage is prevented, and the operational reliability and efficiency of the equipment are improved.
Patent Information
- Application Number
- CN202423253243.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-28
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2034-12-28
AI Technical Summary
In existing forced evaporators, salt scale continuously forms and detaches from the inner wall during the evaporation process, causing blockages in the circulation and extraction pipelines, which affects the safe operation and efficiency of the equipment.
The forced evaporator is equipped with a first and a second annular water distribution plate. The first annular water distribution plate forms an annular gap with the inner wall of the tank, through which the solution flows evenly and washes the inner wall. The second annular water distribution plate accelerates the flow of the solution and forms an inverted V-shaped structure to enhance the washing effect. The overflow weir is designed in a sawtooth shape to control the flow rate and ensure that the solution fully washes the inner wall.
It effectively prevents the formation of salt scale on the inner wall, reduces or eliminates pipeline blockage caused by salt scale shedding, and improves the operational stability and efficiency of the equipment.
Smart Images
Figure CN223654446U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to a forced evaporator, in particular to a forced evaporator capable of preventing the scaling of inner wall. BACKGROUND
[0002] The material of the pre-evaporation process is introduced into the forced evaporation chamber through the outlet pipeline of the circulating pump, and the inlet is below the liquid level of the forced evaporation chamber. With the evaporation of water in the forced evaporation chamber, the concentration of the material is continuously increased, and salt crystals are continuously precipitated. At this time, salt scale is generated above the inner wall of the junction equipment of the liquid level in the forced evaporator. This is because some splashing droplets generated in the forced circulation process adhere to the inner wall of the equipment, and after the evaporation of water, salt particles are precipitated. With the continuous evaporation process, the formed salt scale will become thicker and thicker, and will fall off at irregular times. Larger salt blocks will cause the blockage of the circulating pipeline or the production pipeline, affecting the safe operation of the equipment, and in necessary cases, shutdown cleaning is required, causing great waste. SUMMARY
[0003] The utility model solves the technical problem of the prior art and provides a forced evaporator which is reasonable in design, convenient to use and capable of preventing the scaling of inner wall.
[0004] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme:
[0005] A forced evaporator capable of preventing the scaling of inner wall, characterized in that it comprises a forced evaporator body provided with a tank body, a first annular water distribution tray and a second annular water distribution tray are installed at the top of the tank body of the forced evaporator body in a circumferential manner along the inner wall of the tank body, the second annular water distribution tray is arranged below the first annular water distribution tray for receiving the solution of the first annular water distribution tray, the first annular water distribution tray and the second annular water distribution tray are both horizontally arranged, the first annular water distribution tray and the second annular water distribution tray are both installed on the tank body through a support, one side of the first annular water distribution tray close to the inner wall of the tank body is provided with an overflow weir for overflowing the solution to the second annular water distribution tray, and an annular gap is arranged between the second annular water distribution tray and the inner wall of the tank body for facilitating the outflow of the solution along the inner wall of the tank body.
[0006] The technical problem solved by the utility model can also be solved by the following technical scheme, the first annular water distribution tray is provided with a hollow annular disc body, an inner baffle is arranged on the inner side of the annular disc, the overflow weir is arranged on the outer side of the annular disc body, and the overflow weir of the first annular water distribution tray is zigzag-shaped.
[0007] The technical problem solved by the utility model can also be solved by the following technical scheme, the cross section of the second annular water distribution tray is arranged in an inverted V shape to accelerate the outflow of the solution from the second annular water distribution tray.
[0008] The technical problem solved by the utility model can also be solved by the following technical scheme, the overflow weir of the first annular water distribution tray is serrated, which ensures smooth flow of the solution from the first annular water distribution tray.
[0009] The technical problem solved by the utility model can also be solved by the following technical scheme, the first annular water distribution tray and the second annular water distribution tray are set as an integral and are set in stages, and the outer diameter of the first annular water distribution tray is equal to the inner diameter of the second annular water distribution tray.
[0010] The technical problem solved by the utility model can also be solved by the following technical scheme, the width of the annular gap is 1mm-5mm, which ensures smooth flow of the solution and fully washes the inner wall of the tank.
[0011] Compared with the prior art, the utility model discloses a first annular water distribution tray, which makes the solution flow uniformly along the inner wall of the forced evaporator and flows into the working liquid surface, and then washes the salt solid on the inner wall of the tank, a second annular water distribution tray is arranged, which improves the washing effect and efficiency on the inner wall of the tank, and an overflow weir is arranged, which ensures the washing effect on the inner wall of the tank and avoids the solution flowing too fast to reduce the washing effect.
[0012] The utility model mainly solves the problem that some splashing droplets generated in the forced circulation process adhere to the inner wall of the equipment, salt solid is continuously precipitated after water evaporation, and salt scale is formed. Thus, the problems of circulation pipeline blockage and production pipeline blockage caused by salt scale falling are reduced or eliminated.
[0013] The forced evaporator can be used in multi-effect evaporation, MVR, wastewater evaporation device, high-salinity wastewater desalination device and other devices. BRIEF DESCRIPTION OF DRAWINGS
[0014] Figure 1 It is the structural diagram of the forced evaporator for preventing the inner wall from scaling of the utility model;
[0015] Figure 2 It is the top view of the first annular water distribution tray and the second annular water distribution tray;
[0016] Figure 3 It is Figure 2 The front view.
[0017] In the drawing: 1-forced evaporator body, 2-first annular water distribution tray, 3-second annular water distribution tray, 4-annular gap, 5-overflow weir, 6-inner baffle. DETAILED DESCRIPTION
[0018] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments.
[0019] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.
[0020] Referring to Figures 1-3 A forced evaporator for preventing the inner wall from scaling, comprising a forced evaporator body 1 provided with a tank body, a first annular water distribution tray 2 and a second annular water distribution tray 3 are arranged on the top of the tank body of the forced evaporator body 1 in a circumferential direction along the inner wall of the tank body, the second annular water distribution tray 3 is arranged below the first annular water distribution tray 2 for receiving the solution of the first annular water distribution tray, the first annular water distribution tray 2 and the second annular water distribution tray 3 are both horizontally arranged, the first annular water distribution tray 2 and the second annular water distribution tray 3 are both mounted on the tank body through a support, one side of the first annular water distribution tray 2 close to the inner wall of the tank body is provided with an overflow weir 5 for overflowing the solution to the second annular water distribution tray, the overflow weir 5 of the first annular water distribution tray 2 is sawtooth-shaped, so as to ensure the smooth overflow of the liquid, and an annular gap 4 is arranged between the second annular water distribution tray 3 and the inner wall of the tank body, which facilitates the outflow of the solution along the inner wall of the tank body, and the width of the annular gap 4 is 1mm-5mm.
[0021] The first annular water distribution tray 2 is provided with a hollow annular disc body, an inner baffle 6 is arranged on the inner side of the annular disc, the overflow weir 5 is arranged on the outer side of the annular disc body, the overflow weir 5 of the first annular water distribution tray 2 is sawtooth-shaped, and the cross section of the second annular water distribution tray 3 is arranged in an inverted V shape. The first annular water distribution tray 2 and the second annular water distribution tray 3 are arranged in an integrated and stage-shaped manner, and the outer diameter of the first annular water distribution tray 2 is equal to the inner diameter of the second annular water distribution tray 3.
[0022] The working process of the forced evaporator for preventing the inner wall from scaling is as follows,
[0023] The material of the pre-evaporation process enters the first annular water distribution tray 2 of the forced evaporator through a pipeline. The first annular water distribution tray 2 is arranged on the inner wall of the forced evaporator above the normal working liquid level. The annular water distribution tray is kept absolutely horizontal. The solution overflows through the serrated overflow weir 5 of the first annular water distribution tray 2 to the second annular water distribution tray 3. The solution is uniformly distributed along the inner wall of the forced evaporator through the uninterrupted annular gap 4 of the second annular water distribution tray 3 and flows downward into the working liquid surface. Because the solution of the pre-evaporation process is an unsaturated solution without solid precipitation and can continue to dissolve salt solids, the inner wall of the forced evaporator is continuously washed, which can prevent solid salt particles from adhering to the inner wall of the equipment. The present application mainly uses fresh solution, i.e. the unsaturated solution of the pre-evaporation process, to clean and wash the inner wall of the evaporator. The cleaning flow rate is 5m 3 / h - 10m 3 / h, and the total salt content of the fresh solution used is 5 %-15 %.
[0024] The above is only the preferred specific implementation of the present application, but the protection scope of the present application is not limited to this. Any skilled person in the art can make equivalent replacement or change according to the technical scheme and the inventive concept of the present application within the technical range disclosed by the present application, which should be covered in the protection scope of the present application.
Claims
1. A forced evaporator for preventing fouling of an inner wall, characterized by, The forced evaporator body comprises a tank body, a first annular water distribution tray and a second annular water distribution tray are arranged on the top of the tank body along the inner wall of the tank body, the second annular water distribution tray is arranged below the first annular water distribution tray to receive the solution of the first annular water distribution tray, the first annular water distribution tray and the second annular water distribution tray are horizontally arranged, the first annular water distribution tray and the second annular water distribution tray are mounted on the tank body through a support, one side of the first annular water distribution tray close to the inner wall of the tank body is provided with an overflow weir for overflowing the solution to the second annular water distribution tray, and an annular gap is arranged between the second annular water distribution tray and the inner wall of the tank body to facilitate the outflow of the solution along the inner wall of the tank body.
2. A forced evaporator for preventing the inner wall from being scaled according to claim 1, wherein The first annular water distribution tray is provided with a hollow annular disc body, and an inner baffle is arranged on the inner side of the annular disc body.
3. A forced evaporator for preventing the inner wall from being scaled according to claim 1 or 2, wherein The overflow weir of the first annular water distribution tray is in a sawtooth shape.
4. A forced evaporator for preventing the inner wall from being scaled according to claim 1, wherein The second annular water distribution tray is in an inverted V-shaped cross section.
5. A forced evaporator for preventing the inner wall from being scaled according to claim 1, wherein The first annular water distribution tray and the second annular water distribution tray are integrally arranged in stages, and the outer diameter of the first annular water distribution tray is equal to the inner diameter of the second annular water distribution tray.
6. A forced evaporator for preventing the inner wall from being scaled according to claim 1, wherein The width of the annular gap is 1mm-5mm.