Evaporation assembly and low-temperature evaporation device

Abstract

The present disclosure relates to an evaporation assembly and a low-temperature evaporation device, wherein the evaporation assembly comprises a shell and a cavitation plate assembly connected in the shell, the cavitation plate assembly comprises a plurality of cavitation plates, the cavitation plates extend downwardly in an inclined manner, are provided with a plurality of convex holes of protruding plate surfaces for cavitation liquid, and a plurality of the cavitation plates are arranged in parallel and spaced apart, and adjacent two of the cavitation plates are arranged at least partially overlapped in a vertical direction. The evaporation assembly of the present disclosure comprises a shell and cavitation plates in the shell, and when the evaporation of liquid is carried out, the cavitation plates can use the hydraulic cavitation effect to make the liquid evaporate at a lower temperature, so that the low-temperature evaporation device using the evaporation assembly of the present disclosure has higher evaporation efficiency compared with the traditional spray evaporation, can reduce the energy consumption of heating liquid, and the damage of high-temperature liquid to the equipment, reduces the risk of fouling, and can also recycle the liquid after evaporation, further saving resources.

Description

Technical Field

[0001] This disclosure relates to the field of wastewater treatment technology, specifically to an evaporation component and a low-temperature evaporation apparatus using the evaporation component. Background Technology

[0002] Coal mining generates a large amount of wastewater, which, when directly discharged, not only pollutes the environment but also wastes water resources. Related technologies primarily treat wastewater by heating it to a boiling state, thus achieving a liquid-to-gas phase transition, enabling water recovery and zero wastewater discharge. However, this process presents challenges such as the need for high temperatures or vacuum levels, increasing energy consumption, and the potential for scaling during treatment, which can damage equipment. Summary of the Invention

[0003] The purpose of this disclosure is to provide an evaporation assembly that can utilize hydraulic cavitation to perform evaporation at low temperatures, thereby reducing energy consumption and damage to equipment.

[0004] To achieve the above objectives, this disclosure provides an evaporation assembly, comprising: shell; A cavitation plate assembly, connected in the housing, includes multiple cavitation plates, each extending downward at an angle and having multiple protruding holes protruding from its surface for cavitating liquid. The multiple cavitation plates are arranged in parallel at intervals, and adjacent cavitation plates at least partially overlap in the vertical direction.

[0005] Optionally, the outer casing is provided with a liquid storage chamber, and the liquid storage chamber is provided with a liquid distribution port. The liquid distribution port is used to control the thickness of the liquid film formed by the liquid flowing out of the liquid storage chamber. The cavitation plate is located below the liquid distribution port and is configured to receive the liquid flowing out of the liquid distribution port.

[0006] Optionally, the liquid storage chamber has a rectangular cross-section and is enclosed by a first partition extending horizontally and two second partitions extending vertically, wherein the bottom edge of one of the second partitions is spaced apart from the top surface of the first partition to form the liquid distribution port.

[0007] Optionally, it also includes a third partition plate, which extends horizontally and is connected to the first partition plate. The third partition plate is also provided with a plurality of liquid outlet holes, and a plurality of cavitation plates are connected to the bottom surface of the third partition plate and are provided corresponding to the liquid outlet holes.

[0008] A second aspect of this disclosure also provides a low-temperature evaporation apparatus, including a preheating component, an evaporation component as described in any of the above embodiments, and a first recovery component. The preheating component is used to preheat the liquid to be treated. The outer shell of the evaporation component is in communication with the preheating component. The cavitation plate component is used to cavitate the liquid flowing into the outer shell from the preheating component. The first recovery component is in communication with the outer shell and is used to recover the liquid that has been evaporated in the outer shell.

[0009] Optionally, it also includes a jetting assembly and a steam recovery assembly. The jetting assembly is connected to the housing and includes an air source and a jetting pipe located in the housing. The jetting pipe is located below the cavitation plate and is connected to the air source for spraying gas onto the cavitation plate. The steam recovery assembly is connected to both the preheating assembly and the housing. The steam recovery assembly is used to recover the steam generated in the housing and transport it to the preheating assembly.

[0010] Optionally, the preheating assembly includes a preheating tank with a double-layer structure. The inner layer is used to contain the liquid to be treated, and the outer layer is spaced apart from the inner layer to form a heating chamber. The jetting assembly and the steam recovery assembly are both connected to the heating chamber. The jetting assembly is used to extract the gas in the heating chamber and deliver it to the outer shell. The steam recovery assembly is used to recover the steam in the outer shell to the heating chamber.

[0011] Optionally, it further includes a second recovery component, which is in communication with the heating chamber and located at the bottom of the heating chamber, for recovering liquid in the heating chamber.

[0012] Optionally, a filter plate is provided in the housing, the filter plate is used to filter liquid in the steam in the housing, and the filter plate and the housing enclose a filter cavity, and the steam recovery component is in communication with the filter cavity.

[0013] Optionally, it also includes a control component for controlling the opening and closing of components in the low-temperature evaporation apparatus.

[0014] Compared with the prior art, the advantages of this disclosure are as follows: The evaporation component of this disclosure includes a shell and a cavitation plate located in the shell. When evaporating liquid, the liquid can be evaporated at a lower temperature by utilizing the hydraulic cavitation effect through the cavitation plate. Therefore, the low-temperature evaporation equipment using the evaporation component of this disclosure has higher evaporation efficiency than traditional spray evaporation, which can reduce the energy consumption of heating liquid and the damage to the equipment caused by high-temperature liquid, reduce the risk of scaling, and also enable the recycling of the evaporated liquid, further saving resources.

[0015] Other features and advantages of this disclosure will be described in detail in the following detailed description section. Attached Figure Description

[0016] The accompanying drawings are provided to further illustrate the present disclosure and form part of the specification. They are used together with the following detailed description to explain the present disclosure, but do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of a low-temperature evaporation apparatus provided in an exemplary embodiment of this disclosure; Figure 2 This is a schematic diagram of the structure of the outer shell portion of the evaporation assembly provided in an exemplary embodiment of this disclosure; Figure 3 This is a schematic diagram of the cavitation plate assembly in the evaporation unit provided in an exemplary embodiment of this disclosure; Figure 4 This is a cross-sectional view of the preheating tank in the low-temperature evaporation apparatus provided in an exemplary embodiment of this disclosure.

[0017] Explanation of reference numerals in the attached figures 1-Preheating component; 11-Preheating tank; 12-Heating chamber; 2-Evaporation assembly; 21-Outer shell; 211-Liquid storage chamber; 212-Liquid distribution port; 213-First partition; 214-Second partition; 215-Third partition; 216-Liquid outlet; 22-Cavitation plate; 221-Protrusion hole; 23-Filter plate; 24-Filter chamber; 3-First recycling component; 4-Jet assembly; 41-Jet pipe; 42-Air source; 5-Steam recovery unit; 6-Second recovery component; 7-Control component. Detailed Implementation

[0018] The specific embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit this disclosure.

[0019] In this disclosure, unless otherwise stated, directional terms such as "upper," "lower," "higher," "lower," "top," and "bottom" generally refer to the orientation of the corresponding component or structure in the direction of gravity. "Inner" and "outer" refer to the inner and outer contours of the corresponding component. Furthermore, it should be noted that terms such as "first" and "second" are used to distinguish one element from another and do not indicate sequence or importance. Additionally, in the description with reference to the accompanying drawings, the same reference numerals in different drawings denote the same element. The above definitions are for explanation and illustration only and should not be construed as limiting this disclosure.

[0020] For ease of understanding, please refer to the appendix below. Figures 1 to 4The specific structure and working principle of the evaporation component and low-temperature evaporation device disclosed herein will be described in detail with reference to the embodiments.

[0021] This disclosure relates to an evaporation assembly that utilizes hydraulic cavitation to enable the liquid to be treated to evaporate at a relatively low temperature, such as 40-80°C, reducing the energy consumption required to heat the liquid and minimizing damage to the equipment during the evaporation process. See also Figure 2 and Figure 3 The evaporation assembly disclosed herein includes a housing 21 and a cavitation plate assembly located within the housing 21. The housing 21 provides a mounting base for the components within the evaporation assembly, is made of metal, possesses good strength, and can also store the liquid to be processed. Of course, conventional equipment such as liquid inlet and liquid outlet are also provided on the housing 21, which will not be described in detail here. The cavitation plate assembly includes multiple cavitation plates 22 arranged parallel to each other within the housing 21, with adjacent cavitation plates 22 at least partially overlapping in the vertical direction. Each cavitation plate 22 extends downward at an angle, allowing liquid to flow on it under gravity. Multiple protrusions 221 are also provided on each cavitation plate 22, evenly distributed to cavitate the liquid. In some embodiments, the cavitation plates 22 can be detachably connected to the housing 21, facilitating disassembly and cleaning after a period of use.

[0022] Specifically, the protrusion 221 has an arc-shaped baffle protruding upward from the surface of the cavitation plate 22, and a through hole located below the baffle. When the liquid to be treated flows on the cavitation plate 22 and passes through the protrusion 221, the liquid will first flow along the baffle to increase the falling height of the liquid, and then flow down from the baffle into the through hole and fall onto the cavitation plate 22 below. When the liquid passes through the baffle and the through hole, a small negative pressure will be generated below the cavitation plate 22 due to cavitation. The negative pressure allows air to enter the liquid from below the cavitation plate 22 through the through hole. As the contact time between the air and the liquid increases, the air will be converted into saturated water vapor and exchange the solute and heat in the liquid. In addition, the air will also break in the liquid to generate a certain amount of heat to promote the evaporation of the liquid. Thus, the evaporation component of this disclosure can evaporate the liquid at a lower temperature through cavitation, reducing energy consumption and high temperature damage to the equipment.

[0023] In one embodiment of this disclosure, see Figure 2 and Figure 3A liquid storage chamber 211 is provided in the outer casing 21, and a liquid distribution port 212 is provided on the liquid storage chamber 211. The liquid storage chamber 211 can temporarily store the liquid to be processed delivered to the outer casing 21, and the liquid distribution port 212 can form a liquid film from the liquid flowing out of the liquid storage chamber 211 and control the thickness of the liquid film. For example, in some embodiments, the thickness of the liquid film is controlled to 0.5-1.0 cm by the liquid distribution port 212 to facilitate the flow and evaporation of the liquid on the cavitation plate 22. The cavitation plate 22 can be arranged below the liquid distribution port 212 so as to receive the liquid film flowing out of the liquid distribution port 212 for cavitation and evaporation.

[0024] In one embodiment of this disclosure, see Figure 2 and Figure 3 The liquid storage chamber 211 has a rectangular cross-section and is formed by a first partition 213 extending horizontally and two second partitions 214 extending vertically. The bottom edge of one of the second partitions 214 is spaced apart from the top surface of the first partition 213, and the gap forms a liquid distribution port 212. Arranging the liquid storage chamber 211 in a rectangular shape facilitates manufacturing and calculation of the liquid volume. It also facilitates adjusting the size of the liquid distribution port 212, which can be done simply by replacing the second partitions 214 of different lengths. Of course, in other embodiments, the liquid storage chamber 211 can have other structures, depending on the actual situation, and this disclosure does not impose any limitations on this.

[0025] In one embodiment of this disclosure, see Figure 2 and Figure 3 A third partition 215 is also provided on the liquid storage chamber 211. The third partition 215 also extends horizontally, connects to the end of the first partition 213 and extends beyond the liquid distribution port 212. Multiple liquid outlet holes 216 are provided on the third partition 215. The shape of the liquid outlet holes 216 can be determined according to the required liquid film, for example, it can be a strip. Multiple cavitation plates 22 are connected to the bottom surface of the third partition 215, and each cavitation plate 22 is corresponding to a liquid outlet hole 216, so that the liquid flowing out of the liquid distribution port 212 can flow on the third partition 215 first, and then flow out of the third partition 215 from each different liquid outlet hole 216 and enter the cavitation plate 22 for cavitation and evaporation.

[0026] A second aspect of this disclosure also provides a low-temperature evaporation apparatus, see [link to relevant documentation]. Figure 1 and Figure 2The system includes the evaporation component 2, preheating component 1, and first recovery component 3 described in the above embodiments. The preheating component 1 preheats the liquid to be processed, ensuring it reaches a suitable evaporation temperature. The outer shell 21 of the evaporation component 2 is connected to the preheating component 1, allowing the preheating component 1 to transport the preheated liquid to the storage chamber 211 within the outer shell 21. The first recovery component 3 is also connected to the outer shell 21 and may include a pipe connected to the bottom of the outer shell 21 and a pump located on the pipe to extract the concentrated liquid from the outer shell 21. In other embodiments, the first recovery component 3 may be of other types, depending on the specific circumstances; this disclosure does not impose any limitations on this. By setting the first recovery component 3, after the liquid to be processed has evaporated in the outer shell 21, the liquid containing a large amount of solute at the bottom of the outer shell 21 can be recovered for reuse or further processing.

[0027] In one embodiment of this disclosure, see Figure 1 and Figure 2 The cryogenic evaporation apparatus disclosed herein also includes a jet assembly 4 and a steam recovery assembly 5. The jet assembly 4 includes an air source 42, which can be a fan, and jet pipes 41 located in the outer casing 21. Multiple jet pipes 41 can be evenly arranged in the outer casing 21, located below the cavitation plate 22 and connected to the air source 42, so that the air source 42 can deliver gas into the inner cavity of the outer casing 21 through the jet pipes 41 and spray it out towards the cavitation plate 22 through the jet pipes 41, so that the gas can better pass through the bottom surface of the cavitation plate 22 into the liquid, assisting the cavitation plate 22 in cavitation of the liquid.

[0028] The steam recovery component 5 is connected to the preheating component 1 and the outer shell 21 respectively. When the liquid in the outer shell 21 generates steam during the processing, the steam recovery component 5 will recover the air located in the outer shell 21 and then transport the recovered steam to the preheating component 1, so that the water vapor will liquefy in the preheating component 1 and release heat, which will help the preheating component 1 heat the liquid to be processed, thereby realizing heat recovery and further reducing the energy consumption of the preheating component 1.

[0029] In one embodiment of this disclosure, see Figure 1 and Figure 2 The preheating component 1 may also include a secondary preheating section, which can reheat the liquid to be treated after the first heating to increase the liquid temperature. The secondary preheating section can be set up separately, or it can be generated by renewable energy sources, preheating generated by other components, etc. By setting up a secondary preheating section, the temperature of the liquid to be treated can be better controlled, thereby improving the evaporation effect and the efficiency of liquid treatment.

[0030] In one embodiment of this disclosure, see Figure 1 and Figure 2 A filter plate 23 is installed in the outer casing 21, and the filter plate 23 and the casing 21 can be enclosed to form a closed filter chamber 24. The steam recovery assembly 5 is connected to the filter chamber 24. By installing the filter plate 23, water vapor in the outer casing 21 can be filtered before entering the filter chamber 24, removing small water droplets and other impurities. This prevents these impurities from entering the steam recovery assembly 5 and causing blockages in the pipes or pumps of the steam recovery assembly 5, thus affecting the recovery of water vapor. The filter plate 23 can be positioned at the top corner of the outer casing 21, which facilitates the collection of water vapor as it flows upward. Its corner position also allows it to easily enclose the casing 21 to form a closed filter chamber 24, reducing the space occupied within the outer casing 21.

[0031] In one embodiment of this disclosure, see Figure 1 and Figure 4 The preheating assembly 1 includes a preheating tank 11, which has a double-layer structure. The inner layer is used to hold the liquid to be treated, and the outer layer is spaced apart from the inner layer to form a hollow heating chamber 12 between the inner and outer layers. Both the jetting assembly 4 and the steam recovery assembly 5 are connected to the heating chamber 12 in the preheating tank 11, and the steam recovery assembly 5 is vertically higher than the jetting assembly 4. The steam recovery assembly 5, connected to the heating chamber 12, can transport water vapor recovered from the outer shell 21 to the heating chamber 12 for liquefaction. The heat released from liquefaction is then transferred through the heating chamber 12 to the liquid to be treated in the inner layer to complete the heating of the liquid.

[0032] The jet assembly 4 is connected to the heating chamber 12, which can draw gas from the heating chamber 12 and spray it into the outer casing 21. This prevents the gas pressure in the heating chamber 12 from increasing continuously under the action of the steam recovery assembly 5, thus avoiding damage. Furthermore, since the jet assembly 4 is located below the steam recovery assembly 5, the gas drawn from the heating chamber 12 by the jet assembly 4 is gas in which water vapor has been completely condensed. This also prevents water vapor from being present in the jet assembly 4 and causing damage to the components in the jet assembly 4.

[0033] In one embodiment of this disclosure, see Figure 1 and Figure 4 The low-temperature evaporation apparatus of this disclosure further includes a second recovery component 6, which is connected to the heating chamber 12 and located at the bottom of the heating chamber 12. The second recovery component 6 is capable of recovering the liquefied liquid in the heating chamber 12 for easy recycling. In some embodiments, the second recovery component 6 may include a pipe connected to the bottom of the heating chamber 12 and a pump body located on the pipe to extract the relatively pure liquefied liquid from the bottom of the heating chamber 12 for subsequent use. Of course, in other embodiments, the second recovery component 6 may be of other types, depending on the actual situation, and this disclosure does not limit this.

[0034] In one embodiment of this disclosure, see Figure 1 The low-temperature evaporation apparatus disclosed herein also includes a control component 7, which can control the opening or closing of other components in the low-temperature evaporation apparatus, such as a preheating component 1, an evaporation component 2, a first recovery component 3, an air jet component 4, a steam recovery component 5, and a second recovery component 6. In some embodiments, the control component 7 may include a temperature sensor to detect the temperature of the liquid entering the evaporation component 2 and the temperature of the gas in the heating chamber 12, so as to control the speed and temperature of the liquid entering the outer casing 21, etc. It may also include a flow sensor to monitor the flow rate of the gas in the air jet component 4 and the steam recovery component 5 for corresponding control. Of course, in other embodiments, the control component 7 may also include other control components and sensors, etc., depending on the actual situation, and this disclosure does not limit this.

[0035] When the low-temperature evaporation device disclosed herein is in use, the liquid to be processed first enters the inner layer of the preheating tank 11 for heating. Then, the heated liquid is transported to the liquid storage chamber 211 in the outer shell 21. The liquid in the liquid storage chamber 211 flows out through the liquid distribution port 212 to the third partition 215, and finally flows out from the liquid outlet hole 216 on the third partition 215 to the cavitation plate 22 for cavitation evaporation. During the cavitation process, the jet assembly 4 also jets air towards the cavitation plate 22 to assist the cavitation evaporation. The specific cavitation evaporation process can be found in the description in the above embodiments, and will not be repeated here.

[0036] As the liquid continuously cavitates and evaporates, the vapor recovery assembly 5 collects the water vapor in the inner cavity of the outer shell 21 and transports it to the heating chamber 12 of the preheating tank 11, allowing the water vapor to liquefy and release heat in the heating chamber 12 to heat the liquid in the inner layer of the preheating tank 11. The first recovery assembly 3, located at the bottom of the outer shell, recovers the concentrated liquid in the outer shell 21, while the second recovery assembly 6, located at the bottom of the preheating tank 11, recovers the liquefied liquid in the heating chamber 12 to complete the cycle. The control assembly 7 detects and controls the various components in the low-temperature evaporation device to ensure smooth evaporation of the liquid and the circulation of liquid and gas between different components.

[0037] The low-temperature evaporation device disclosed herein utilizes the principles of cavitation and the characteristics of natural evaporation to achieve liquid evaporation and concentration at lower temperatures. Compared with traditional spray evaporation, it has higher evaporation efficiency, reduces energy consumption for heating liquids and damage to equipment caused by high-temperature liquids, lowers the risk of scaling, and can also recycle the evaporated liquid, further saving resources.

[0038] The preferred embodiments of this disclosure have been described in detail above with reference to the accompanying drawings. However, this disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of this disclosure, various simple modifications can be made to the technical solutions of this disclosure, and these simple modifications all fall within the protection scope of this disclosure.

[0039] It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, this disclosure will not describe the various possible combinations separately.

[0040] Furthermore, various different embodiments of this disclosure can be combined in any way, as long as they do not violate the spirit of this disclosure, they should also be regarded as the content disclosed in this disclosure.

Claims

1. An evaporation assembly, characterized in that, include: shell; A cavitation plate assembly, connected in the housing, includes multiple cavitation plates, each extending downward at an angle and having multiple protruding holes protruding from its surface for cavitating liquid. The multiple cavitation plates are arranged in parallel at intervals, and adjacent cavitation plates at least partially overlap in the vertical direction.

2. The evaporation assembly according to claim 1, characterized in that, The outer casing is provided with a liquid storage chamber, and the liquid storage chamber is provided with a liquid distribution port. The liquid distribution port is used to control the thickness of the liquid film formed by the liquid flowing out of the liquid storage chamber. The cavitation plate is located below the liquid distribution port and is configured to receive the liquid flowing out of the liquid distribution port.

3. The evaporation assembly according to claim 2, characterized in that, The liquid storage chamber has a rectangular cross-section and is enclosed by a first partition extending horizontally and two second partitions extending vertically. The bottom edge of one of the second partitions is spaced apart from the top surface of the first partition to form the liquid distribution port.

4. The evaporation assembly according to claim 3, characterized in that, It also includes a third partition plate, which extends horizontally and is connected to the first partition plate. The third partition plate is also provided with a plurality of liquid outlet holes. A plurality of cavitation plates are connected to the bottom surface of the third partition plate and are provided corresponding to the liquid outlet holes.

5. A low-temperature evaporation apparatus, characterized in that, include: The preheating component, the evaporation component according to any one of claims 1-4, and the first recovery component, wherein the preheating component is used to preheat the liquid to be treated, the outer shell of the evaporation component is in communication with the preheating component, the cavitation plate component is used to cavitate the liquid flowing into the outer shell from the preheating component, and the first recovery component is in communication with the outer shell and is used to recover the liquid that has been evaporated in the outer shell.

6. The low-temperature evaporation apparatus according to claim 5, characterized in that, It also includes a jet assembly and a steam recovery assembly. The jet assembly is connected to the housing and includes an air source and a jet pipe located in the housing. The jet pipe is located below the cavitation plate and is connected to the air source for spraying gas onto the cavitation plate. The steam recovery assembly is connected to the preheating assembly and the housing respectively. The steam recovery assembly is used to recover the steam generated in the housing and transport it to the preheating assembly.

7. The low-temperature evaporation apparatus according to claim 6, characterized in that, The preheating assembly includes a preheating tank with a double-layer structure. The inner layer is used to contain the liquid to be treated, and the outer layer is spaced apart from the inner layer to form a heating chamber. The jetting assembly and the steam recovery assembly are both connected to the heating chamber. The jetting assembly is used to extract the gas in the heating chamber and deliver it to the outer shell. The steam recovery assembly is used to recover the steam in the outer shell to the heating chamber.

8. The low-temperature evaporation apparatus according to claim 7, characterized in that, It also includes a second recovery component, which is in communication with the heating chamber and located at the bottom of the heating chamber, for recovering the liquid in the heating chamber.

9. The low-temperature evaporation apparatus according to claim 6, characterized in that, A filter plate is provided in the housing, which is used to filter the liquid in the steam in the housing and forms a filter cavity with the housing. The steam recovery component is in communication with the filter cavity.

10. The low-temperature evaporation apparatus according to any one of claims 5-9, characterized in that, It also includes a control component for controlling the opening and closing of components in the low-temperature evaporation apparatus.

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