Novel crystallization evaporation disc group
The design of the new crystallization evaporation plate group solves the problem of scaling and clogging in the tube structure, realizes a highly efficient evaporation and crystallization process, and reduces equipment costs and maintenance difficulty.
Patent Information
- Application Number
- CN202520111203.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-17
- Publication Date
- 2026-02-17
- Estimated Expiration
- 2035-01-17
AI Technical Summary
Traditional tubular evaporation crystallization equipment is prone to scaling and clogging due to high temperatures and high concentrations of concentrate on the pipe surface, which can cause the equipment to malfunction. Furthermore, the evaporation and crystallization processes are carried out separately, increasing equipment investment and maintenance costs.
A novel crystallization evaporation plate assembly is adopted, including first and second crystallization evaporation plates, with an overflow port and an S-shaped wastewater flow path. Combined with air distribution plates and supports, turbulence is formed to improve heat uniformity. Stainless steel is used to enhance thermal conductivity and corrosion resistance.
It achieves tubeless crystallization evaporation, reduces scaling, improves heat distribution uniformity and heat transfer efficiency, and reduces equipment investment and operation and maintenance costs.
Smart Images
Figure CN223921134U_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of high-salinity wastewater treatment technology, and more specifically, relates to a novel crystallization evaporation disk assembly. Background Technology
[0002] Traditional evaporation crystallization technologies, such as MVR and triple-effect evaporation, use a shell-and-tube structure with high-temperature steam as the heat source to evaporate and concentrate raw water before further crystallization. Although this structure has been used in engineering and has advantages such as good thermal conductivity and high evaporation efficiency, the high temperature of the shell-and-tube structure during evaporation leads to a high concentration of concentrated liquid on the pipe surface. Calcium and magnesium ions easily form scale on the pipe walls, even clogging the pipes, causing the system to malfunction, reducing thermal efficiency, and forcing production to stop. Furthermore, the evaporation and crystallization processes are carried out in two separate parts, increasing equipment investment and operation and maintenance costs. Summary of the Invention
[0003] The purpose of this application is to provide a novel crystallization evaporation plate assembly, which solves the problems of the current evaporation process where, due to the high temperature of the tube structure, the concentration of concentrated liquid on the pipe surface is high, and calcium and magnesium ions are prone to scale formation on the tube wall, even clogging the pipe, causing the equipment to malfunction and production to be forced to stop. In addition, the evaporation process and the crystallization process are carried out in two different parts, which increases the equipment construction cost.
[0004] To achieve the above objectives, the technical solution adopted in this application is: a novel crystallization evaporation disk assembly, comprising:
[0005] The first crystallization evaporation plate includes a first water-holding tray and a first heating tray, a first heat-conducting cavity is formed between the first water-holding tray and the first heating tray, and an overflow port is provided at the center of the first crystallization evaporation plate.
[0006] The second crystallization evaporation plate is vertically disposed below the first crystallization evaporation plate. The second crystallization evaporation plate includes a second water-holding tray and a second heating tray, and a second heat-conducting cavity is formed between the second water-holding tray and the second heating tray. The concentrated liquid in the second crystallization evaporation plate can overflow from all sides.
[0007] The second crystallization evaporation plate is used to receive the high-salinity wastewater overflowing from the overflow port and to perform secondary evaporation and crystallization on the high-salinity wastewater.
[0008] Preferably, the first heat-conducting cavity includes a first heat source channel and a second heat source channel, and an air distribution plate is provided between the first heat source channel and the second heat source channel. The air distribution plate is used to evenly distribute the heat source passing through the first heat source channel to the second heat source channel.
[0009] Preferably, the air distribution plate comprises:
[0010] The first air distribution plate has a plurality of first through holes evenly arranged on it, and the first air distribution plate is directly facing the heat source inlet.
[0011] The second air distribution plate has two pieces, which are symmetrically arranged on both sides of the first air distribution plate. Each of the two second air distribution plates is evenly provided with a plurality of second through holes.
[0012] Preferably, the diameter of the second through hole is larger than the diameter of the first through hole.
[0013] Preferably, the second heat source channel is provided with multiple supports, which are used to support the first water-holding tray.
[0014] Preferably, the plurality of supports are evenly distributed in the second heat source channel, so that when the heat source flows through the second heat source channel, turbulence is formed under the action of the supports, making the heat distribution more uniform.
[0015] Preferably, the support is cylindrical and solid.
[0016] Preferably, both the first crystallization evaporation plate and the second crystallization evaporation plate are made of stainless steel.
[0017] Preferably, a truncated cone protrudes from the center of the second crystallization evaporation pan, so that the high-salt wastewater overflowing from the overflow port falls into the truncated cone and then quickly flows into the second water-holding tray.
[0018] Preferably, the interior of the second heating tray is the same as that of the first heating tray.
[0019] The beneficial effects of the novel crystallization evaporation disk assembly provided in this application are as follows:
[0020] 1. Compared with the prior art, the present invention provides a crystallization evaporation plate assembly, wherein an overflow port is set at the center of the first crystallization evaporation plate, and a second crystallization evaporation plate is vertically set below the first crystallization evaporation plate, with overflow around the perimeter, so that the movement path of the high-salt wastewater is S-shaped. The second crystallization evaporation plate is used to receive the high-salt wastewater overflowing from the overflow port and to perform secondary evaporation and crystallization on the high-salt wastewater, so as to achieve the beneficial effect of tubeless crystallization evaporation.
[0021] 2. This utility model provides a crystallization evaporation plate assembly. The first heat-conducting cavity includes a first heat source channel and a second heat source channel. A wind distribution plate is provided between the first heat source channel and the second heat source channel. The wind distribution plate is used to evenly distribute the heat source passing through the first heat source channel to the second heat source channel. The second heat source channel is arranged with multiple supports. The supports are used to support the first water-holding tray. The multiple supports are evenly distributed in the second heat source channel, so that when the heat source flows through the second heat source channel, turbulence is formed under the action of the supports, resulting in a more uniform heat distribution. Attached Figure Description
[0022] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0023] Figure 1 This is a schematic diagram of the structure of a novel crystallization evaporation disk assembly provided in an embodiment of this application;
[0024] Figure 2 This is a schematic diagram of the structure of the first crystallization evaporation plate provided in an embodiment of this application;
[0025] Figure 3 This is a top cross-sectional view of the first heating tray provided in an embodiment of this application;
[0026] Figure 4 A schematic diagram of the unfolded structure of the first and second air distribution plates provided in the embodiments of this application.
[0027] The following are the labeling elements in the figure:
[0028] 1. First crystallization evaporation plate; 2. Second crystallization evaporation plate; 3. First water tray; 4. First heating tray; 5. Heat source inlet; 6. Heat source outlet; 7. Overflow outlet; 8. First heat source flow channel; 9. Second heat source flow channel; 10. First air distribution plate; 11. First through hole; 12. Second air distribution plate; 13. Second through hole; 14. Support; 15. Baffle; 16. Frustum conical; 17. Second heating tray. Detailed Implementation
[0029] To make the technical problems, technical solutions, and beneficial effects to be solved by this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and are not intended to limit the scope of this application.
[0030] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly on that other component. When a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to that other component.
[0031] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and 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 application.
[0032] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.
[0033] Please refer to the following: Figures 1 to 4 The present application will now describe a novel crystallization evaporation disk assembly provided in the embodiments of this application.
[0034] A novel crystallization evaporation plate assembly includes a first crystallization evaporation plate 1 and a second crystallization evaporation plate 2.
[0035] Specifically, the first crystallization evaporation plate 1 includes a first water-holding tray 3 and a first heating tray 4. A first heat-conducting cavity is formed between the first water-holding tray 3 and the first heating tray 4. A heat source inlet 5 and a heat source outlet 6 are provided on the side of the first heating tray 4, and both the heat source inlet 5 and the heat source outlet 6 are connected to the first heat-conducting cavity. By introducing a heat source into the first heat-conducting cavity, the heat source can be steam, hot air, or heat transfer oil, so that the high-salt wastewater in the first water-holding tray 3 evaporates and crystallizes. An overflow port 7 is provided at the center of the first crystallization evaporation plate 1. It should be noted that the outer contour of the first water-holding tray 3 is higher than the overflow port 7, so that the high-salt wastewater only overflows from the overflow port 7. The second crystallization evaporation plate 2 is vertically arranged below the first crystallization evaporation plate 1, so that the high-salt wastewater flows in an S-shape. The second crystallization evaporation plate 2 includes a second water-holding tray and a second heating tray 17, with a second heat-conducting cavity formed between the second water-holding tray and the second heating tray 17. A truncated cone 16 protrudes from the center of the second water-holding tray, allowing the high-salt wastewater overflowing from the overflow port 7 to fall into the truncated cone 16 and then quickly flow into the second water-holding tray. The second crystallization evaporation plate 2 is used to receive the high-salt wastewater overflowing from the overflow port 7 and to perform secondary evaporation and crystallization on the high-salt wastewater. It should be noted that the internal structures of the first heating tray 4 and the second heating tray 17, as well as the first heat-conducting cavity and the second heat-conducting cavity, are the same. The following uses the first heating tray 4 and the first heat-conducting cavity as examples.
[0036] Specifically, the first heat-conducting cavity includes: a first heat source channel 8 and a second heat source channel 9. A distribution plate is disposed between the first heat source channel 8 and the second heat source channel 9. The distribution plate is used to evenly distribute the heat source passing through the first heat source channel 8 to the second heat source channel 9. Specifically, the distribution plate includes: a first distribution plate 10, on which a plurality of first through holes 11 are evenly disposed, and the first distribution plate 10 faces the heat source inlet 5; and two second distribution plates 12, which are symmetrically disposed on both sides of the first distribution plate 10. Both second distribution plates 12 are evenly disposed with a plurality of second through holes 13, and both second distribution plates 12 are seamlessly connected to the first distribution plate 10. The diameter of the second through hole 13 is larger than the diameter of the first through hole 11. The diameter of the first through hole 11 is 4-8 mm, and the diameter of the second through hole 13 is 8-15 mm.
[0037] In a preferred embodiment, the second heat source channel 9 is provided with multiple supports 14, which support the first water-holding tray 3. The multiple supports 14 are evenly distributed within the second heat source channel 9, causing turbulence to form as the heat source flows through the channel, resulting in a more uniform heat distribution. The supports 14 are cylindrical and can be solid or hollow. The spacing between the supports 14 is 50-100 mm, and the diameter of the cylindrical supports 14 is 5-15 mm. Because the supports 14 have a certain volume and mass, they can store a small amount of heat, which is beneficial for the uniform distribution of heat. They also enhance the energy storage and thermal shock resistance of the first heating tray 4 to a certain extent. Under conditions of large temperature changes, the presence of the supports 14 can significantly reduce deformation. Simultaneously, the supports 14 can also, to a certain extent, cause turbulent flow in the heat source, making the heat distribution more uniform. This design ensures that the heat source is evenly distributed within the crystallization evaporation plate assembly and improves the heat transfer efficiency.
[0038] In a preferred embodiment, both the first crystallization evaporation plate 1 and the second crystallization evaporation plate 2 are made of 316 stainless steel, 304 stainless steel, or titanium alloy. Stainless steel or titanium alloy has better thermal conductivity and corrosion resistance. Using 316 stainless steel allows the heat source to be transferred to the high-salt wastewater more quickly through the surface of the crystallization evaporation plate. In addition, 304 stainless steel, 316 stainless steel, or titanium alloy has excellent corrosion resistance, which further improves the heating efficiency and service life of the crystallization evaporation plate.
[0039] Crystallization principle: The crystallization evaporation plates are arranged vertically, with the first crystallization evaporation plate 1 and the second crystallization evaporation plate 2 stacked alternately. Each evaporation plate is individually fixed to the inner wall of the vacuum container and is not connected to each other. The movement path of the heated high-salt wastewater is S-shaped. The high-salt wastewater is heated, evaporated, and concentrated in the first crystallization evaporation plate 1. The high-salt wastewater overflows from the middle overflow port 7 and falls into the second crystallization evaporation plate 2. Then, the high-salt wastewater in the second crystallization evaporation plate 2 overflows around and falls into the next first crystallization evaporation plate 1 for further evaporation, crystallization, and drying. After 6-8 concentration and crystallization cycles, the final crystallization and drying are completed.
[0040] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.
Claims
1. A novel crystallization evaporation disk assembly, characterized in that, include: The first crystallization evaporation plate includes a first water-holding tray and a first heating tray, a first heat-conducting cavity is formed between the first water-holding tray and the first heating tray, and an overflow port is provided at the center of the first crystallization evaporation plate. The second crystallization evaporation plate is vertically disposed below the first crystallization evaporation plate. The second crystallization evaporation plate includes a second water-holding tray and a second heating tray, and a second heat-conducting cavity is formed between the second water-holding tray and the second heating tray. The second crystallization evaporation plate is used to receive the high-salinity wastewater overflowing from the overflow port and to perform secondary evaporation and crystallization on the high-salinity wastewater.
2. The novel crystallization evaporation disk assembly as described in claim 1, characterized in that, The first heat-conducting cavity includes a first heat source channel and a second heat source channel. A wind distribution plate is provided between the first heat source channel and the second heat source channel. The wind distribution plate is used to evenly distribute the heat source passing through the first heat source channel to the second heat source channel.
3. The novel crystallization evaporation disk assembly as described in claim 2, characterized in that, The air distribution plate includes: The first air distribution plate has a plurality of first through holes evenly arranged on it, and the first air distribution plate is directly facing the heat source inlet. The second air distribution plate has two pieces, which are symmetrically arranged on both sides of the first air distribution plate and are seamlessly connected to the first air distribution plate. Each second air distribution plate is evenly provided with multiple second through holes.
4. The novel crystallization evaporation disk assembly as described in claim 3, characterized in that: The diameter of the second through hole is larger than the diameter of the first through hole.
5. A novel crystallization evaporation disk assembly as described in claim 4, characterized in that: The second heat source channel is provided with multiple supports, which are used to support the first water-holding tray.
6. A novel crystallization evaporation disk assembly as described in claim 5, characterized in that: The multiple supports are evenly distributed within the second heat source channel, causing turbulence to form as the heat source flows through the second heat source channel under the action of the supports, resulting in a more uniform heat distribution.
7. A novel crystallization evaporation disk assembly as described in claim 6, characterized in that: The support is cylindrical and solid.
8. A novel crystallization evaporation disk assembly as described in claim 7, characterized in that: Both the first crystallization evaporation plate and the second crystallization evaporation plate are made of stainless steel.
9. A novel crystallization evaporation disk assembly as described in claim 1 or 8, characterized in that: The second crystallization evaporation plate has a truncated cone at its center so that the high-salt wastewater overflowing from the overflow port falls into the truncated cone and then quickly flows into the second water-holding tray.
10. A novel crystallization evaporation disk assembly as described in claim 9, characterized in that: The second heating tray has the same interior as the first heating tray.