A desulfurization wastewater evaporation and concentration device

Abstract

The present application belongs to the field of environmental protection technology, and discloses a desulfurization wastewater evaporation concentration device, which has the following technical points: the device comprises an evaporation tank, the opposite two inner side walls of the evaporation tank are respectively rotationally installed with bearing discs, a plurality of electric heating plates are fixedly installed between the two bearing discs and distributed side by side, positioning assemblies that are matched with the bearing discs are arranged between the opposite two side walls of the evaporation tank, a dedusting mechanism that is matched with the electric heating plates is arranged between the two bearing discs, the dedusting mechanism comprises a brush, a limiting assembly and a rotating assembly, the brush is arranged on the two sides of the electric heating plate, the limiting assembly is located on the surface of the bearing disc and connected with the brush, and the problems that salt crystals are generated in the evaporation process of wastewater and attached to the surface of the electric heating plate, the heat transfer efficiency of the electric heating plate is affected with the increasing thickness of the salt crystals, and the evaporation efficiency of the wastewater is affected are solved.

Description

Technical Field

[0001] This invention relates to the field of environmental protection technology, specifically to a desulfurization wastewater evaporation and concentration device. Background Technology

[0002] Traditional treatment methods ("three-stage treatment") for desulfurization wastewater generated after treating flue gas from coal-fired power plants primarily rely on chemical treatment, including neutralization, sedimentation, flocculation, and concentration / clarification. However, even after this simple chemical treatment involving chemical dosing, coagulation, and sedimentation, the desulfurization wastewater still exhibits high salt content and corrosiveness, negatively impacting the environment whether directly discharged or incorporated into municipal wastewater treatment plants. Therefore, it is necessary to concentrate the desulfurization wastewater, followed by pressure filtration or evaporation to achieve zero discharge.

[0003] Currently, when treating desulfurization wastewater with high-temperature evaporation, electric heating plates are commonly used to heat the wastewater solution. However, existing equipment cannot protect the electric heating plates. During the evaporation process, salt crystals will form on the surface of the electric heating plates. As the thickness of the salt crystals increases, it will affect the heat transfer efficiency of the electric heating plates, thus failing to heat the wastewater sufficiently and affecting its evaporation efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a desulfurization wastewater evaporation and concentration device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, the present invention provides the following technical solution:

[0006] A desulfurization wastewater evaporation and concentration device includes an evaporation tank with a circular longitudinal cross-section. An air outlet is located at the top of the evaporation tank, and a drain pipe is located at the bottom. Water injection pipes are located on the side walls of the evaporation tank. Supporting plates are rotatably mounted on two opposing inner side walls of the evaporation tank. Multiple parallel-arranged electric heating plates are fixedly mounted between the two supporting plates. Positioning components that cooperate with the supporting plates are located between the opposing side walls of the evaporation tank. These positioning components control the rotation of the supporting plates within the evaporation tank, thereby controlling the movement of the electric heating plates within the evaporation tank. The inner cavity rotates synchronously, and a cleaning mechanism that cooperates with the heating plate is provided between the two support plates. The cleaning mechanism includes a brush, a limiting component, and a rotating component. The brush is located on both sides of the heating plate, and the limiting component is located on the surface of the support plate and connected to the brush. When the heating plate rotates in the inner cavity of the evaporator, the limiting component controls the brush to slide along the surface of the heating plate. The rotating component is connected to the limiting component. When the brush slides along the surface of the heating plate, the rotating component controls the brush to rotate on the surface of the heating plate by cooperating with the limiting component.

[0007] As a further aspect of the present invention: the positioning component includes a gear ring with a bearing plate annular sidewall, a transmission column is rotatably mounted on the opposite side walls of the evaporator, a transmission gear plate is fixedly mounted on the surface of the transmission column, the transmission gear plate is meshed with the gear ring, and one end of the transmission column extends to the outside of the evaporator and is connected to a motor.

[0008] As a further aspect of the present invention: the limiting component includes vertical grooves on both sides of the heating plate on the surface of the bearing plate, sliding blocks are slidably installed in the vertical grooves, and two sliding blocks oppositely distributed on the surfaces of the two bearing plates are rotatably mounted together with a bearing rod located on the outside of the heating plate, and the bristles on the brush are evenly distributed on the surface of the bearing rod.

[0009] As a further aspect of the present invention: the rotating assembly includes a control gear disk fixedly mounted on the surface of a bearing rod, a side plate located outside the vertical groove fixedly mounted on the side wall of the bearing disk, and a rack that meshes with the control gear disk fixedly mounted on the surface of the side plate.

[0010] As a further aspect of the present invention: the sliding block is made of magnetic material, and magnetic blocks that cooperate with the sliding block are fixedly installed at both ends of the vertical groove.

[0011] As a further aspect of the present invention, the height of the plurality of heating plates gradually decreases from the middle to both sides.

[0012] As a further embodiment of the present invention: support legs are fixedly installed around the bottom wall of the evaporator.

[0013] Compared with existing technologies, the advantages of this invention are: by setting the positioning component and the support plate to cooperate with each other, the position and angle of the heating plate can be easily adjusted; by setting the limiting component and the rotating component to cooperate with each other, the brush can be controlled to rotate automatically on the surface of the heating plate, thereby controlling the brush to automatically clean the salt crystals adhering to the surface of the heating plate, effectively improving the performance of the heating plate. This solves the problem that salt crystals are formed on the surface of the heating plate during wastewater evaporation, and as the thickness of the salt crystals increases, it affects the heat transfer efficiency of the heating plate and the evaporation efficiency of the wastewater. Attached Figure Description

[0014] Figure 1 This is a three-dimensional structural diagram of a desulfurization wastewater evaporation and concentration device provided in an embodiment of the present invention.

[0015] Figure 2 This is a schematic diagram of the main structure of a desulfurization wastewater evaporation and concentration device provided in an embodiment of the present invention.

[0016] Figure 3 This is a schematic diagram of the positioning component in a desulfurization wastewater evaporation and concentration device provided in an embodiment of the present invention.

[0017] Figure 4 This is a schematic diagram of the support plate and its connection structure in a desulfurization wastewater evaporation and concentration device provided in an embodiment of the present invention.

[0018] Figure 5 for Figure 2 A magnified structural diagram of A in the diagram.

[0019] Figure 6 for Figure 4 A magnified structural diagram of B in the diagram.

[0020] The components are: 1-Evaporator, 11-Air outlet, 12-Guide pipe, 13-Water injection pipe, 2-Bearing plate, 3-Heating plate, 4-Positioning assembly, 41-Gear ring, 42-Transmission column, 43-Transmission gear plate, 44-Motor, 5-Impurity removal mechanism, 51-Brush, 52-Limiting assembly, 521-Vertical groove, 522-Sliding block, 523-Bearing rod, 53-Rotating assembly, 531-Control gear plate, 532-Side plate, 533-Rack, 6-Magnetic block, 7-Support leg. Detailed Implementation

[0021] It should be noted that, unless otherwise specified, the embodiments and features described in the present invention can be combined with each other.

[0022] The specific implementation of the present invention will be described in detail below with reference to specific embodiments.

[0023] like Figure 1 , Figure 2 , Figure 3 , Figure 4The diagram shown illustrates the structure of a desulfurization wastewater evaporation and concentration device according to an embodiment of the present invention. The device includes an evaporation tank 1 with a circular longitudinal section. An outlet 11 is located at the top of the evaporation tank 1, and a guide pipe 12 is located at the bottom. A water injection pipe 13 is located on the side wall of the evaporation tank 1. Supporting plates 2 are rotatably mounted on two opposing inner side walls of the evaporation tank 1. Multiple parallel-arranged electric heating plates 3 are fixedly mounted between the two supporting plates 2. Positioning components 4, which cooperate with the supporting plates 2, are located between the opposing side walls of the evaporation tank 1. These positioning components 4 control the rotation of the supporting plates 2 within the evaporation tank 1, thereby controlling the movement of the electric heating plates 3 during evaporation. The inner cavity of the chamber 1 rotates synchronously. Between the two support plates 2, a cleaning mechanism 5 that cooperates with the heating plate 3 is provided. The cleaning mechanism 5 includes a brush 51, a limiting component 52, and a rotating component 53. The brush 51 is located on both sides of the heating plate 3. The limiting component 52 is located on the surface of the support plate 2 and is connected to the brush 51. When the heating plate 3 rotates in the inner cavity of the evaporation chamber 1, the limiting component 52 controls the brush 51 to slide along the surface of the heating plate 3. The rotating component 53 is connected to the limiting component 52. When the brush 51 slides along the surface of the heating plate 3, the rotating component 53 controls the brush 51 to rotate on the surface of the heating plate 3 by cooperating with the limiting component 52.

[0024] In use, the wastewater to be evaporated and concentrated is transported into the evaporation chamber 1 through the water injection pipe 13. Initially, the positioning component 4, in cooperation with the support plate 2, controls the heating plate 3 to remain vertical within the evaporation chamber 1. At this time, the limiting component 52 controls the brush 51 to be positioned at the bottom of the heating plate 3, energizing the heating plate 3. The heating plate 3 then performs high-temperature evaporation treatment on the wastewater in the evaporation chamber 1. During distillation, the wastewater easily produces salt crystals that adhere to the surface of the heating plate 3. When it is necessary to clean the salt crystals from the surface of the heating plate 3, the positioning component 4 controls the support plate 2 to rotate 180 degrees at the inner wall of the evaporation chamber 1. The support plate 2 then drives the heating plate 3 to rotate 180 degrees synchronously. When the heating plate 3 rotates, it drives the brush 51 to rotate synchronously. After the heating plate 3 rotates more than 90 degrees, the limiting component 52 controls the brush 51 to slide along the heating plate 3. The rotating component 53 controls the brush 51 to rotate while sliding along the surface of the heating plate 3 in cooperation with the limiting component 52. The brush 51 can automatically clean the salt crystals attached to the surface of the heating plate 3. After the limiting component 52 controls the brush 51 to move to the bottom of the heating plate 3 again, when the heating plate 3 needs to be cleaned again, the positioning component 4 controls the carrier plate 2 to rotate 180 degrees again. This cycle is repeated to automatically clean the salt crystals attached to the surface of the heating plate 3 multiple times.

[0025] like Figure 2 , Figure 3 , Figure 4As shown, in a preferred embodiment of the present invention, the positioning component 4 includes a gear ring 41 with an annular sidewall of the bearing plate 2, a transmission column 42 is rotatably mounted on the opposite sidewalls of the evaporator 1, a transmission gear plate 43 is fixedly mounted on the surface of the transmission column 42, the transmission gear plate 43 is meshed with the gear ring 41, and one end of the transmission column 42 extends to the outside of the evaporator 1 and is connected to a motor 44.

[0026] When it is necessary to clean the salt crystals on the surface of the heating plate 3, the motor 44 drives the transmission column 42 to rotate, and the transmission column 42 drives the transmission gear plate 43 to rotate synchronously. The transmission gear plate 43 meshes with the gear ring 41, which can drive the bearing plate 2 to rotate on the inner wall of the evaporator 1. The two sets of bearing plates 2 cooperate with each other, which can drive the heating plate 3 to rotate synchronously in the inner cavity of the evaporator 1. After the heating plate 3 has rotated 180 degrees, the motor 44 controls the transmission gear plate 43 to stop rotating. The transmission gear plate 43 and the gear ring 41 engage with each other, which can fix the position of the bearing plate 2.

[0027] like Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, in a preferred embodiment of the present invention, the limiting component 52 includes vertical grooves 521 on the surface of the bearing plate 2 located on both sides of the heating plate 3. Sliding blocks 522 are slidably installed in the vertical grooves 521. Two sliding blocks 522, which are oppositely distributed on the surfaces of the two bearing plates 2, are rotatably mounted together with a bearing rod 523 located on the outside of the heating plate 3. The bristles on the brush 51 are evenly distributed on the surface of the bearing rod 523.

[0028] The sliding block 522 slides within the vertical groove 521. When the heating plate 3 and the vertical groove 521 remain vertical, the sliding block 522 is at the bottom of the vertical groove 521. The sliding block 522 and the bearing rod 523 cooperate to support and position the brush 51. At this time, the brush 51 is at the bottom of the heating plate 3. When the heating plate 3 rotates, the bearing plate 2 drives the brush 51 to rotate synchronously. After the bearing plate 2 rotates more than 90 degrees, the vertical groove 521 is tilted, and the sliding block 522 is at the higher end of the vertical groove 521. Under the action of gravity, the sliding block 522 slides downward along the direction of the vertical groove 521. The sliding block 522 and the bearing rod 523 cooperate to control the brush 51 to slide horizontally along the surface of the heating plate 3.

[0029] like Figure 2 , Figure 4 , Figure 5 , Figure 6As shown, in a preferred embodiment of the present invention, the rotating assembly 53 includes a control gear disk 531 fixedly mounted on the surface of the bearing rod 523, a side plate 532 located outside the vertical groove 521 fixedly mounted on the side wall of the bearing disk 2, and a rack 533 that meshes with the control gear disk 531 fixedly mounted on the surface of the side plate 532.

[0030] When the support rod 523 moves horizontally to the outside of the heating plate 3, it drives the control toothed disc 531 to move synchronously. The control toothed disc 531 rolls along the surface of the rack 533. The control toothed disc 531 drives the support rod 523 to rotate around its own axis during the horizontal movement. The support rod 523 drives the brush 51 to rotate. When the brush 51 rotates, it can automatically clean the salt crystals attached to the surface of the heating plate 3.

[0031] like Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 6 As shown, in a preferred embodiment of the present invention, the sliding block 522 is made of magnetic material, and magnetic blocks 6 that cooperate with the sliding block 522 are fixedly installed at both ends of the vertical groove 521.

[0032] The magnetic block 6 is connected to the sliding block 522 by magnetic attraction to form a whole. After the support plate 2 rotates more than 90 degrees, the vertical groove 521 is tilted and the sliding block 522 is at the higher end of the vertical groove 521. The magnetic block 6 can counteract the downward gravity component of the sliding block 522 by magnetic attraction. When the support plate 2 continues to rotate, the sliding block 522 can always be located at the higher end of the vertical groove 521 and will not slide down. Only when the vertical groove 521 rotates to a vertical state, the downward gravity of the sliding block 522 is greater than the magnetic attraction of the magnetic block 6. At this time, the sliding block 522 moves downward in the vertical groove 521. The sliding block 522 and the magnetic block 6 cooperate with each other to effectively increase the cleaning range of the brush 51, thereby cleaning the surface of the heating plate 3 in a targeted manner.

[0033] like Figure 2 , Figure 4 As shown, in a preferred embodiment of the present invention, the height of the plurality of heating plates 3 gradually decreases from the middle to both sides.

[0034] like Figure 1 As shown, in a preferred embodiment of the present invention, support legs 7 are fixedly installed around the bottom wall of the evaporator 1.

[0035] The working principle of this invention is as follows: When in use, the wastewater that needs to be evaporated and concentrated is transported to the evaporation box 1 through the water injection pipe 13. Initially, the electric heating plate 3 is kept vertical in the inner cavity of the evaporation box 1, and the sliding block 522 is located at the bottom of the vertical groove 521. The sliding block 522 and the bearing rod 523 cooperate with each other to support and position the brush 51. At this time, the brush 51 is located at the bottom of the electric heating plate 3, and the electric heating plate 3 is energized. The electric heating plate 3 performs high-temperature evaporation treatment on the wastewater in the evaporation box 1.

[0036] During distillation, wastewater easily produces salt crystals that adhere to the surface of the heating plate 3. When it is necessary to clean the salt crystals on the surface of the heating plate 3, the motor 44 drives the transmission column 42 to rotate, and the transmission column 42 drives the transmission gear plate 43 to rotate synchronously. The transmission gear plate 43 meshes with the gear ring 41, which can drive the bearing plate 2 to rotate on the inner wall of the evaporator 1. The two sets of bearing plates 2 cooperate with each other, which can drive the heating plate 3 to rotate synchronously in the inner cavity of the evaporator 1. After the heating plate 3 has rotated 180 degrees, the motor 44 controls the transmission gear plate 43 to stop rotating. The transmission gear plate 43 and the gear ring 41 engage with each other, which can fix the position of the bearing plate 2. The support plate 2 drives the heating plate 3 to rotate synchronously by 180 degrees. As the heating plate 3 rotates, it drives the brush 51 to rotate synchronously. After the heating plate 3 rotates more than 90 degrees, the vertical groove 521 is tilted, and the sliding block 522 is located at the higher end of the vertical groove 521. Under the action of gravity, the sliding block 522 slides downwards along the direction of the vertical groove 521. The sliding block 522 cooperates with the support rod 523 to control the brush 51 to slide horizontally along the surface of the heating plate 3. When the support rod 523 moves horizontally on the outside of the heating plate 3, it drives the control toothed disc 531 to move synchronously. The control toothed disc 531 rolls along the surface of the rack 533. The control toothed disc 531 drives the support rod 523 to rotate around its own axis during horizontal movement. The support rod 523 drives the brush 51 to rotate, and the brush 51 can automatically clean the salt crystals adhering to the surface of the heating plate 3 during rotation. When the heating plate 3 needs to be cleaned again, the bearing plate 2 is rotated 180 degrees again. This cycle is repeated to automatically clean the salt crystals attached to the surface of the heating plate 3 multiple times.

[0037] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present invention.

Claims

1. A desulfurization wastewater evaporation and concentration device, comprising an evaporation tank, wherein the evaporation tank has a circular longitudinal cross-section, an air outlet is provided at the top of the evaporation tank, a drain pipe is provided at the bottom of the evaporation tank, and a water injection pipe is provided on the side wall of the evaporation tank, characterized in that, The evaporator has two opposing inner walls on which a support plate is rotatably mounted. Multiple parallel heating plates are fixedly mounted between the two support plates. A positioning component that cooperates with the support plate is provided between the opposing two inner walls of the evaporator. The positioning component controls the rotation of the support plate within the evaporator, thereby controlling the synchronous rotation of the heating plates within the evaporator cavity. A cleaning mechanism that cooperates with the heating plates is provided between the two support plates. The cleaning mechanism includes a brush, a limiting component, and a rotating component. The brush is located on both sides of the heating plate. The limiting component is located on the surface of the support plate and connected to the brush. When the heating plate rotates within the evaporator cavity, the limiting component controls the brush to slide along the surface of the heating plate. The rotating component is connected to the limiting component. When the brush slides along the surface of the heating plate, the rotating component controls the brush to rotate on the surface of the heating plate by cooperating with the limiting component.

2. The desulfurization wastewater evaporation and concentration device according to claim 1, characterized in that, The positioning component includes a gear ring with a bearing plate annular sidewall. The two opposite sidewalls of the evaporator are rotatably mounted with a transmission column. A transmission gear plate is fixedly mounted on the surface of the transmission column. The transmission gear plate meshes with the gear ring. One end of the transmission column extends to the outside of the evaporator and is connected to a motor.

3. The desulfurization wastewater evaporation and concentration device according to claim 1, characterized in that, The limiting component includes vertical grooves on both sides of the heating plate on the surface of the bearing plate, with sliding blocks slidably installed in the vertical grooves. Two sliding blocks, which are oppositely distributed on the surfaces of the two bearing plates, are rotatably mounted together with a bearing rod located on the outside of the heating plate. The bristles on the brush are evenly distributed on the surface of the bearing rod.

4. The desulfurization wastewater evaporation and concentration device according to claim 3, characterized in that, The rotating assembly includes a control gear disk fixedly mounted on the surface of a support rod, a side plate fixedly mounted on the side wall of the support disk located outside the vertical groove, and a rack fixedly mounted on the surface of the side plate that meshes with the control gear disk.

5. The desulfurization wastewater evaporation and concentration device according to claim 3, characterized in that, The sliding block is made of magnetic material, and magnetic blocks that cooperate with the sliding block are fixedly installed at both ends of the vertical groove.

6. The desulfurization wastewater evaporation and concentration device according to claim 1, characterized in that, The height of the multiple heating plates gradually decreases from the middle to both sides.

7. The desulfurization wastewater evaporation and concentration device according to claim 1, characterized in that, Support legs are fixedly installed around the bottom wall of the evaporator.

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