Chemical water diversion reaction equipment

Abstract

The invention relates to the technical field of chemical inorganic salt evaporation and separation, in particular to chemical water separation reaction equipment which comprises an evaporation tank, a liquid storage cavity, a heat exchange cavity and a collection cavity are formed in the evaporation tank, a condensation pipe is arranged in the heat exchange cavity, and a steam pipe is arranged on the heat exchange cavity. A sealing sleeve is coaxially arranged outside each condensation pipe in a sleeving mode, a steam supply pipe is arranged on each sealing sleeve, a water outlet is formed in the bottom of each sealing sleeve, a rotating ring is coaxially and rotationally installed on the outer wall of each condensation pipe, and a scraper is arranged on each rotating ring; a driving assembly used for driving the rotating ring to rotate is further arranged in the sealing sleeve. The driving assembly drives the scraping plate to rotate, collection of water drops on the condensation pipe is accelerated, the collected water drops rapidly flow towards the water outlet under the gravity of the water drops, it is avoided that the water drops influence subsequent heating of steam on the condensation pipe, and then the heating and evaporation efficiency of waste water is improved.

Description

Technical Field

[0001] This invention relates to the field of chemical inorganic salt evaporation and separation technology, specifically a chemical water separation reaction device. Background Technology

[0002] Chemical plants generate chemical wastewater during production processes. This wastewater typically contains inorganic salts, heavy metals, and other substances. To ensure environmental protection, chemical plants must remove harmful substances from the wastewater and collect them for centralized treatment.

[0003] MVR evaporators are an upgraded replacement for traditional evaporators. MVR evaporators utilize low-temperature and low-pressure steam technology and clean energy to generate steam, separating water from the medium. They offer advantages such as low energy consumption, simple process, and strong practicality. Currently, industrial wastewater treatment typically uses MVR evaporators to separate water and inorganic salts from wastewater through evaporation. The main working principle is that wastewater flows in a film-like manner along the inner wall of the condenser tubes. Steam comes into contact with the condenser tubes from the outside, liquefying upon contact and releasing heat, which in turn heats the condenser tubes. The condenser tubes then transfer this heat to the wastewater in contact with the inner wall, further heating the wastewater. Part of the wastewater evaporates into water vapor, which is then sent to a steam compressor and compressed into high-temperature steam. The wastewater is concentrated, and the high-temperature steam is then sent back to the condenser tubes to continue heating and evaporating subsequent wastewater. Through continuous concentration, harmful inorganic substances in the wastewater can be separated.

[0004] Due to the large volume of industrial wastewater generated, improving the evaporation efficiency of evaporators and saving energy consumed in wastewater treatment has become the main direction for evaporator improvement. However, in existing MVR evaporators, after high-temperature steam comes into contact with the condenser tubes, the steam liquefies into water droplets upon cooling, releasing heat. These water droplets adhere to the outer wall of the condenser tubes. When subsequent steam continues to contact the outer wall of the condenser tubes, these water droplets also absorb some of the heat released from the steam liquefaction, leading to a decrease in the efficiency of steam heating the wastewater.

[0005] A search revealed application number CN202310354682.5, entitled "A Salt Extraction Device for High-Salinity Wastewater," which proposes an MVR evaporator. This evaporator uses heat transfer tubes wound around the outside of each condenser tube, allowing steam to evenly heat each tube during operation. This reduces uneven heating of the condenser tubes due to their different locations, thus improving the evaporation efficiency. While this patent improves the efficiency of the MVR evaporator, it fails to solve the aforementioned problem of water droplets.

[0006] To address this issue, a chemical water separation reaction device is proposed to solve the problem that the formation of water droplets after the vapor outside the condenser tube liquefies affects the efficiency of subsequent wastewater evaporation and concentration. Summary of the Invention

[0007] The purpose of this invention is to provide a chemical water separation reaction device that solves the problem that the formation of water droplets after the vapor outside the condenser tube liquefies affects the efficiency of subsequent wastewater evaporation and concentration, improves the concentration efficiency of MVR evaporators for chemical wastewater, and saves the energy cost required for wastewater concentration.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A chemical water separation reaction device includes an evaporator. Inside the evaporator, from top to bottom, are a storage chamber for storing wastewater, a heat exchange chamber for steam heat exchange, and a collection chamber for storing concentrated wastewater. The heat exchange chamber contains multiple condenser tubes that connect the storage chamber and the collection chamber. A distributor is installed inside the storage chamber to evenly distribute the wastewater from the storage chamber onto the inner wall of the condenser tubes to form a water film. An inlet communicating with the storage chamber is located at the top of the evaporator. The bottom of the steam tank is provided with a discharge port communicating with the collection chamber. The heat exchange chamber is provided with a steam pipe for providing high-temperature steam to the heat exchange chamber. Each condenser tube is coaxially fitted with a sealing sleeve. Each sealing sleeve is provided with a steam supply pipe, which is connected to the steam pipe. The bottom of the sealing sleeve is provided with a water outlet. A rotating ring is coaxially rotatably installed on the outer wall of the condenser tube. The rotating ring is provided with a scraper for abutting against the outer wall of the condenser tube. The sealing sleeve is also provided with a drive assembly for driving the rotating ring to rotate.

[0010] A drive assembly rotates a rotating ring, which in turn drives a scraper to rotate around the outer wall of the condenser tube. As the scraper rotates, it abuts against the outer wall of the condenser tube, scraping away the small water droplets formed by the liquefaction of steam on the tube. The rotation of the scraper gathers the water droplets on the outer wall of the condenser tube, accelerating their flow towards the downward outlet. This prevents the water droplets from absorbing the heat released by subsequent steam liquefaction on the condenser tube, allowing the heat released by subsequent steam liquefaction to be more effectively transferred to the condenser tube. This improves the heating efficiency of the chemical wastewater flowing on the inner wall of the condenser tube, effectively increasing the energy utilization rate of steam and saving on the cost of evaporating and concentrating chemical wastewater.

[0011] Preferably, the drive assembly includes a connection between the steam supply pipe and the sealing sleeve, with the steam outlet direction facing the tangential direction of the condenser pipe. Because the sealing sleeve is filled with steam, the humidity is high. Using a conventional drive method, such as a motor-driven rotating ring rotating a scraper, places high demands on the motor's waterproofing. Multiple condenser pipes require multiple motors, which increases the installation cost of the drive assembly. Furthermore, the motors require regular maintenance, necessitating the removal and reinstallation of the sealing sleeve after maintenance, resulting in prolonged maintenance time and impacting the treatment efficiency of chemical wastewater.

[0012] By using the power of steam transport as the drive component to rotate the scraper, the steam impacts the side of the scraper as it enters the sealed sleeve, causing the scraper to rotate around the axis of the condenser tube. Compared to using a motor or other drive components, the equipment has lower installation costs, no precision parts, is less prone to failure, and has lower maintenance costs.

[0013] Preferably, the scraper includes a rigid part and a scraping part. The rigid part is made of hard plastic and is fixedly connected to the rotating ring. The scraping part is made of an elastic plastic sheet and is fixedly installed on the side of the rigid part facing the condenser tube. The scraping part abuts against the outer wall of the condenser tube, and one end of the abutting part is bent to form an arc shape. The concave side of the arc shape faces the rotation direction of the rotating ring.

[0014] Both the scraping and hard parts are made of plastic, which is cheaper and lighter than metal, allowing steam to easily drive the scraper's rotation and preventing the scraper from failing to rotate due to excessive weight, thus ensuring the stability of the scraper's rotation. The curved part facilitates the scraper's removal of water droplets from the condenser tubes and collects them in the concave area of ​​the curved part. Furthermore, because plastic has lower thermal conductivity than metal, the rate at which water droplets are transferred from the condenser tubes to the scraper is reduced when scraping them, preventing the scraper's temperature from dropping after contact with the condenser tubes, which would then cause steam to condense and release heat on the scraper.

[0015] The scraping part is made of a thin, elastic plastic sheet and is formed into an arc shape by pressure between it and the condenser tube, which ensures that the scraping part can fit tightly against the outer wall surface of the condenser tube, thereby ensuring the scraping effect on the water droplets on the outer wall of the condenser tube.

[0016] Preferably, the outer wall of the condenser tube has an arc-shaped protrusion, which is arranged along the axial direction of the condenser tube and aligned with the scraping part in the axial direction of the condenser tube. The protrusion causes the scraping part to be further compressed and bent when it rotates to the protrusion. After passing the protrusion, the scraping part returns to its original position under its own elasticity, and a shaking occurs during the return process, which facilitates the shaking off of water droplets from the recess of the arc-shaped part, allowing the water droplets to be discharged from the outlet of the sealing sleeve more quickly. This further prevents water droplets from affecting the subsequent heating of the condenser tube by steam.

[0017] Preferably, the rigid part has a drainage chamber inside, the opening of the drainage chamber facing the rigid part where the condenser tube is located, and a drain outlet is provided at the bottom of the drainage chamber. The side of the scraping part facing the concave part of the arc-shaped part is flush with the inner wall of the drainage chamber. The scraping part has a plurality of first capillary grooves on the side facing the concave part of the arc-shaped part. The plurality of first capillary grooves are evenly arranged on the scraping part along the axial direction of the condenser tube, and the first capillary grooves extend from the scraping part to the inner wall of the drainage chamber that is flush with the side wall of the scraping part. The plurality of first capillary grooves are all inclined downward toward the drain outlet.

[0018] After the scraping section removes water droplets from the condenser tube, the droplets collected on the scraping section are drawn into the drainage chamber by the capillary action of the first capillary groove. As more and more water droplets enter the drainage chamber, the rotating scraper causes the droplets to converge away from the condenser tube due to centrifugal force. Eventually, when enough droplets have accumulated, they flow downwards towards the drain outlet under gravity and are discharged from the bottom drain outlet. The downward-sloping first capillary groove acts as a guide, working in conjunction with centrifugal force to quickly discharge the water droplets towards the drain outlet.

[0019] After the water droplets exit the drainage chamber from the drain outlet, they have already reached the bottom of the sealing sleeve. The steam inside the sealing sleeve has basically come into contact with the condenser and released heat at the bottom of the sealing sleeve. At this time, the water droplets exiting the bottom of the sealing sleeve have little impact on the steam. Moreover, after the water droplets exit the drainage chamber from the drain outlet, they are close to the water outlet and can be quickly discharged from the water outlet to the outside of the sealing sleeve.

[0020] The design of the inlet chamber allows most of the water droplets collected on the scraper to enter the inlet chamber through the capillary effect of the first capillary groove, and then exit the sealed sleeve through the outlet, reducing the contact between the water droplets and subsequent steam. The principle is that the opening of the inlet chamber is smaller than the entire interior space of the sealed sleeve. Only a small portion of the steam enters the inlet chamber after entering the sealed sleeve, thus preventing subsequent steam from contacting the water droplets scraped off by the scraper. This ensures that more of the subsequent steam can liquefy and release heat on the outer wall of the condenser tube, guaranteeing the efficient heating and evaporation of the wastewater.

[0021] Preferably, a sealing part is provided on the side of the drainage chamber opposite to the scraping part. The sealing part is made of an elastic plastic sheet. The end of the sealing part facing the condenser tube has multiple flow ports, all of which penetrate the sealing part. The multiple flow ports are evenly arranged on the sealing part along the axial direction of the condenser tube, and each of the multiple flow ports is aligned with a multiple first capillary groove. The end of the sealing part facing the condenser tube is placed in the recess of the arc-shaped part and forms a "V" shape with the scraping part. The side of the sealing part facing the scraping part also has multiple second capillary grooves. The multiple second capillary grooves are aligned with the multiple flow ports and extend to the inner side wall of the drainage chamber. The second capillary grooves are all inclined downwards towards the drain outlet.

[0022] The sealing section blocks the opening of the flow chamber, further preventing steam from entering and ensuring that the steam can effectively heat the condenser tubes, thus guaranteeing steam utilization efficiency. The sealing section has multiple flow ports aligned with the first capillary groove, allowing water droplets to still be drawn into the flow chamber by the capillary action of the first groove. Simultaneously, if water droplets contact the side wall of the flow port upon entering, they will enter the second capillary groove, where they will also be adsorbed into the flow chamber by capillary action. The second capillary groove increases the efficiency of adsorbing water droplets into the flow chamber and prevents water droplets from sealing the flow port due to their own tension upon contact with the side wall, ensuring a stable flow of subsequent water droplets into the flow chamber.

[0023] Furthermore, since the scraper is rotating, even if water droplets close the flow port due to their own tension, the centrifugal force of the rotating scraper can shake the water droplets off the flow port and allow them to enter the drainage chamber. Moreover, as the scraper passes the protrusion, the scraper will vibrate under its own elasticity, which can also prevent water droplets from clogging the flow port, thus improving the operational stability of the equipment.

[0024] Preferably, the sealing sleeve is circular, and there are multiple scrapers. The multiple scrapers are evenly distributed on the rotating ring with the axis of the rotating ring as the reference. The side of the scraper away from the condenser tube abuts against the inner wall of the sealing sleeve.

[0025] The side of the scraper furthest from the condenser tube abuts against the inner wall of the sealing sleeve. This allows for greater contact between the sealing sleeve and the steam after steam enters the sleeve, enabling the scraper to be more effectively propelled by the steam and ensuring stable rotation. The presence of multiple scrapers also prevents a single scraper from failing to complete a full rotation after being propelled by steam at the connection point and then having to return to the connection point to be propelled again. This further ensures stable rotation of the scrapers driven by steam, improving the operational stability of the equipment.

[0026] Preferably, the inner side of each drainage chamber is provided with a heat insulation layer, which is made of aerogel material. The first capillary groove and the second capillary groove are both formed on the heat insulation layer. The heat insulation layer reduces the rate at which the temperature inside the drainage chamber is transferred to the outside of the rigid part, preventing water droplets from collecting and accumulating inside the drainage chamber and affecting the temperature outside the rigid part, thus preventing the temperature outside the rigid part from dropping rapidly and avoiding the subsequent release of heat by liquefying steam upon encountering cold outside the rigid part.

[0027] Ensure that steam liquefies and releases heat on the condenser as much as possible, thereby increasing the utilization rate of steam and improving the efficiency of steam heating and evaporation of wastewater.

[0028] Preferably, the heat insulation layer is further provided with a first flow-gathering groove and a second flow-gathering groove. The first flow-gathering groove is located on one side of the flow-draining chamber where the scraping part is located, and the second flow-gathering groove is located on one side of the flow-draining chamber where the sealing part is located. The first capillary groove is connected to the first flow-gathering groove, and the second capillary groove is connected to the second flow-gathering groove. The first flow-gathering groove and the second flow-gathering groove are both arranged vertically downwards, and the first flow-gathering groove and the second flow-gathering groove are both aligned with the water outlet.

[0029] The design of the first and second converging channels allows water droplets to be absorbed into the inlet chamber through capillary action. The water droplets then quickly converge at the first and second converging channels, and under their own gravity, they fall rapidly downwards along the channels and are discharged from the drain outlet at the bottom of the inlet chamber. This prevents the water droplets from affecting the temperature of the rigid section and causing the steam to liquefy and release heat at the rigid section, ensuring that the steam liquefies at the condenser tube and guarantees the heating and evaporation efficiency of the wastewater.

[0030] The water droplets that have been collected exit the first and second capillary channels, creating gaps in these channels. This enhances the capillary effect, allowing the water droplets on the scraping section to be quickly absorbed into the drainage chamber by the first and second capillary channels, further preventing the water droplets on the condenser tube from affecting the evaporation efficiency of the wastewater.

[0031] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0032] 1. The chemical water separation reaction equipment designed in this invention, compared with existing chemical water separation reaction equipment, has a sealing sleeve installed inside the heat exchange chamber of the evaporator, and a scraper is also installed inside the sealing sleeve. The power of steam entering the sealing sleeve impacts the scraper, causing it to rotate. The rotating scraper scrapes away the water droplets liquefied on the condenser tube and collects them together, accelerating the water droplet collection. The collected water droplets then flow quickly towards the outlet under their own gravity, preventing the water droplets from affecting the subsequent heating of the condenser tube by the steam and improving the efficiency of heating and evaporating wastewater.

[0033] 2. The chemical water separation reaction device designed in this invention also has a flow guide chamber on the hard part of the scraper. Through the capillary action of the first capillary groove on the scraper, the water droplets scraped off the condenser tube by the scraper are absorbed into the flow guide chamber. The water droplets flow through the flow guide chamber towards the outlet, reducing the contact between the water droplets and the steam subsequently input into the sealing sleeve when the water droplets flow towards the outlet. This prevents the water droplets from absorbing heat from the subsequently input steam, further improving the heating efficiency of the steam on the condenser tube.

[0034] 3. The chemical water separation reaction device designed in this invention also has a sealing part at the opening of the inlet chamber. The sealing part seals the opening of the inlet chamber, further preventing steam from entering the inlet chamber and coming into contact with water droplets, thus further ensuring the utilization efficiency of steam. The sealing part is provided with a flow port and a second capillary groove. The flow port ensures that the water droplets scraped off from the condenser tube by the scraping part can enter the inlet chamber, and the second capillary tube further improves the efficiency of water droplets entering the inlet chamber. Attached Figure Description

[0035] Figure 1 This is a front view of the present invention;

[0036] Figure 2 For the present invention Figure 1 Sectional view at point AA;

[0037] Figure 3 This is a schematic diagram of the internal structure of the present invention;

[0038] Figure 4 For the present invention Figure 3 Enlarged view of point B in the middle;

[0039] Figure 5 This is a perspective view of the internal structure of the sealing sleeve in this invention;

[0040] Figure 6 This is a top view of the internal structure of the sealing sleeve in this invention;

[0041] Figure 7 For the present invention Figure 5 Enlarged view of point C in the middle;

[0042] Figure 8 For the present invention Figure 5 Enlarged view of point D in the middle;

[0043] Figure 9 This is a three-dimensional structural diagram of the rotating ring and scraper in this invention;

[0044] Figure 10 For the present invention Figure 9 Enlarged view of point E in the middle.

[0045] In the diagram: 1. Evaporator; 2. Liquid storage chamber; 3. Collection chamber; 4. Condenser; 5. Liquid distributor; 6. Inlet; 7. Outlet; 8. Steam pipe; 9. Sealing sleeve; 10. Steam supply pipe; 11. Water outlet; 12. Rotating ring; 13. Scraper; 1301. Hard part; 1302. Scraping part; 14. Connection port; 15. Arc-shaped part; 16. Protrusion; 17. Drainage chamber; 18. Drain outlet; 19. First capillary groove; 20. Sealing part; 21. Flow port; 22. Second capillary groove; 23. Insulation layer; 24. First converging groove; 25. Second converging groove; 26. Drain pipe; 27. Secondary steam recovery pipe; 28. Heat exchange chamber; ω, Rotation direction. Detailed Implementation

[0046] Please see Figures 1 to 10 This invention provides a chemical water separation reaction device, the technical solution of which is as follows:

[0047] refer to Figures 1 to 3 A chemical water separation reaction device includes an evaporator 1. Inside the evaporator 1, from top to bottom, are a storage chamber 2 for storing wastewater, a heat exchange chamber 28 for steam heat exchange, and a collection chamber 3 for storing concentrated wastewater. A secondary steam recovery pipe 27 is also installed on the collection chamber 3, connected to an external collection container, for discharging and recovering water vapor formed after the chemical wastewater evaporates from the collection chamber 3. Multiple condenser pipes 4 are installed inside the heat exchange chamber 28, connecting the storage chamber 2 and the collection chamber 3. A distributor 5 is installed inside the storage chamber 2 to evenly distribute the wastewater inside the storage chamber 2 onto the inner wall of the condenser pipes 4 to form a water film. An inlet 6 connected to the storage chamber 2 is located at the top of the evaporator 1, and an outlet 7 connected to the collection chamber 3 is located at the bottom of the evaporator 1. A steam pipe 8 is installed on the heat exchange chamber 28, connected to an external steam compressor to provide high-temperature steam to the heat exchange chamber 28. The evaporator 1 is also equipped with a drain pipe 26, which is located on the lower side of the heat exchange chamber 28 and is used to drain the condensate formed inside the heat exchange chamber 28 after the steam heat exchange is completed.

[0048] Among them, reference Figure 2 , Figure 5 and Figure 6Each condenser tube 4 is coaxially fitted with a sealing sleeve 9. The sealing sleeve 9 is cylindrical and is equipped with a steam supply pipe 10. The steam supply pipe 10 is connected to the steam pipe 8. A connection port 14 is provided between the steam supply pipe 10 and the sealing sleeve 9. The connection port 14 is located on the upper side of the sealing sleeve 9. The gas outlet direction of the connection port 14 is tangential to the condenser tube 4 and does not pass through the axis of the condenser tube 4. A water outlet 11 is provided at the bottom of the sealing sleeve 9.

[0049] refer to Figures 4 to 9 A rotating ring 12 is coaxially mounted on the outer wall of the condenser tube 4, and a scraper 13 is provided on the rotating ring 12 for abutting against the outer wall of the condenser tube 4. It should be noted that there can be one or more scrapers 13. When there are multiple scrapers 13, the scrapers 13 are evenly distributed on the rotating ring 12 with the axis of the rotating ring 12 as the reference circumference. In this embodiment, there are two scrapers 13, and the two scrapers 13 are evenly distributed on the rotating ring 12 with the axis of the rotating ring 12 as the reference circumference. The scraper 13 includes a rigid part 1301 and a scraping part 1302. The rigid part 1301 is made of rigid plastic and is fixedly connected to the rotating ring 12. The scraping part 1302 is made of elastic plastic sheet and is fixedly installed on the side of the rigid part 1301 facing the condenser tube 4. The scraping part 1302 abuts against the outer wall of the condenser tube 4, and one end of the abutting part is bent to form an arc-shaped part 15. The concave side of the arc-shaped part 15 faces the rotation direction ω of the rotating ring 12. The side of the rigid part 1301 away from the condenser tube 4 abuts against the inner wall of the sealing sleeve 9 and can slide relative to the inner wall of the sealing sleeve 9.

[0050] refer to Figure 5 and Figure 6 The outer wall of the condenser tube 4 is also provided with an arc-shaped protrusion 16. The protrusion 16 is arranged along the axial direction of the condenser tube 4 and is aligned with the scraping part 1302 in the axial direction of the condenser tube 4.

[0051] In addition, refer to Figures 5 to 8The rigid part 1301 has a drainage chamber 17 inside, and a heat insulation layer 23 made of aerogel is provided on the inner side of each drainage chamber 17. The opening of the drainage chamber 17 faces the rigid part 1301 where the condenser tube 4 is located. A drain outlet 18 is provided at the bottom of the drainage chamber 17. The side of the scraping part 1302 facing the concave part of the arc-shaped part 15 is flush with the inner wall of the drainage chamber 17. Multiple first capillary grooves 19 are provided on the side of the scraping part 1302 facing the concave part of the arc-shaped part 15. The width of the first capillary grooves 19 is less than 1 mm, and 0.5 mm is selected in this embodiment. The multiple first capillary grooves 19 are evenly arranged on the scraping part 1302 along the axial direction of the condenser tube 4, and the first capillary grooves 19 extend from the scraping part 1302 to the heat insulation layer 23 on the inner wall of the drainage chamber 17. The multiple first capillary grooves 19 are all inclined downward towards the drain outlet 18.

[0052] refer to Figures 5 to 10 A sealing section 20 is provided on one side of the drainage chamber 17 opposite to the scraping section 1302. The sealing section 20 is made of an elastic plastic sheet. Multiple flow ports 21 are provided on the end of the sealing section 20 facing the condenser tube 4. The width of each flow port 21 is 1 mm. All flow ports 21 penetrate the sealing section 20. The multiple flow ports 21 are evenly arranged on the sealing section 20 along the axial direction of the condenser tube 4, and each of the multiple flow ports 21 is aligned with a multiple of the first capillary grooves 19. The sealing section 20 faces the condenser tube 4. One end of the pipe 4 is placed in the recess of the arc-shaped part 15 and forms a "V" shape with the scraping part 1302. The side of the sealing part 20 facing the scraping part 1302 is also provided with a plurality of second capillary grooves 22. The width of the second capillary grooves 22 is the same as the width of the first capillary groove 19. The plurality of second capillary grooves 22 are aligned with the plurality of flow ports 21 and extend to the heat insulation layer 23 on the side of the drainage chamber 17 where the sealing part 20 is located. The second capillary grooves 22 are all inclined downward toward the drain port 18.

[0053] refer to Figures 4 to 8 The heat insulation layer 23 is also provided with a first flow-gathering groove 24 and a second flow-gathering groove 25. The first flow-gathering groove 24 is located on one side of the flow-draining chamber 17 where the scraping part 1302 is located, and the second flow-gathering groove 25 is located on one side of the flow-draining chamber 17 where the sealing part 20 is located. The first capillary groove 19 is connected to the first flow-gathering groove 24, and the second capillary groove 22 is connected to the second flow-gathering groove 25. The first flow-gathering groove 24 and the second flow-gathering groove 25 are both set vertically downward, and the first flow-gathering groove 24 and the second flow-gathering groove 25 are both aligned with the water outlet 11.

[0054] When using, refer to Figures 1 to 8Chemical wastewater is fed into the storage chamber 2 through the inlet 6. The distributor 5 inside the storage chamber 2 evenly distributes the wastewater into the condenser tube 4, forming a flowing water film on the inner wall of the condenser tube 4. Meanwhile, a steam compressor continuously supplies high-temperature steam into the steam pipe 8, which then flows into the heat exchange chamber 28. The high-temperature steam entering the heat exchange chamber 28 enters multiple steam supply pipes 10 connected to the steam pipe 8, and then enters the sealing sleeve 9 through the connection port 14 on the sealing sleeve 9 connected to the steam supply pipes 10. Once inside the sealing sleeve 9, the high-temperature steam contacts the outer wall of the condenser tube 4. Because the temperature of the condenser tube 4 is lower than that of the high-temperature steam, the steam condenses into water droplets on the outer wall of the condenser tube 4, releasing heat to heat the condenser tube 4. The condenser tube 4 then transfers this heat to the industrial wastewater flowing on its inner wall, thus achieving the evaporation and concentration of the industrial wastewater. After the industrial wastewater is heated at the condenser tube 4, a portion of it evaporates to form steam, which is then collected outside the collection chamber 3 via the secondary steam recovery tube 27. This steam can be converted into high-temperature steam by a steam compressor and reused. Because some of the water in the industrial wastewater evaporates, the wastewater entering the collection chamber 3 is concentrated wastewater. This concentrated wastewater can then be discharged from the outlet 7 outside the collection chamber 3 to enter the next round of evaporation and concentration. This process is repeated to achieve the evaporation and concentration treatment of industrial wastewater, separating the inorganic salts from the water.

[0055] When steam enters the interior of the sealing sleeve 9, refer to Figure 6 and Figure 7 Because steam is at high temperature and pressure, after entering the sealing sleeve 9, it exerts a pushing force along the tangential direction of the sealing sleeve 9. This pushing force impacts the surface of the scraper 13 inside the sealing sleeve 9, thus giving the scraper 13 a torque. The scraper 13 rotates around the axis of the rotating ring 12 in the direction of rotation ω. During the rotation, the scraping part 1302 on the scraper 13 abuts against the outer wall of the condenser tube 4. Therefore, as the scraping part 1302 rotates around the condenser tube 4, it scrapes off the water droplets formed by the liquefaction of steam on the condenser tube 4 and collects them in the recess of the arc-shaped part 15. The scraping part 1302 scrapes off and collects the water droplets from the condenser tube 4, so when the subsequent steam liquefies and releases heat on the condenser tube 4, more heat can be transferred to the chemical wastewater on the inner wall of the condenser tube 4, improving the heating efficiency of the steam on the chemical wastewater.

[0056] refer to Figure 8 , Figure 9 as well as Figure 10Because the arc-shaped portion 15 of the scraping part 1302 has multiple first capillary grooves 19 on its concave side, the water droplets collected on the arc-shaped portion 15 will flow along the first capillary grooves 19 and enter the drainage chamber 17 through the flow port 21 under the capillary effect of the first capillary grooves 19. Furthermore, because the sealing part 20 blocks the opening of the drainage chamber 17, and the width of the connecting opening is only 1mm, the high-temperature steam entering the sealing sleeve 9 has difficulty entering the drainage chamber 17, effectively preventing the water droplets from absorbing the heat of the steam subsequently entering the sealing sleeve 9. This allows more of the steam's heat energy to be transferred to the condenser tube 4, further improving the steam's heating efficiency for the chemical wastewater.

[0057] refer to Figure 8 When water droplets enter the flow chamber 17 through the connecting port, if the water droplets come into contact with the side wall of the connecting port, they will then come into contact with the second capillary groove 22 connected to the connecting port. Under the capillary effect of the second capillary groove 22, the water droplets are drawn into the flow chamber 17 more quickly. Furthermore, because the scraper 13 rotates around the central axis of the condenser tube 4, the water droplets gathered in the concave part of the arc-shaped section 15 are subjected to centrifugal force, causing them to be flung towards the flow chamber 17, further accelerating the speed at which the water droplets enter the flow chamber 17. This prevents the water droplets from absorbing more heat from the steam, further improving the utilization rate of steam energy.

[0058] refer to Figure 6 and Figure 7 When the scraper part 1302 rotates and passes the protrusion 16, the protrusion 16 will squeeze the scraper part 1302, causing the scraper part 1302 to bend further. After passing the protrusion 16, since the scraper part 1302 is no longer squeezed by the protrusion 16, the scraper part 1302 will return to its original position under its own elastic force. When the scraper part 1302 returns to its original position under the elastic force, the scraper part 1302 will vibrate. After the scraper part 1302 vibrates, it can shake off the water droplets that have not entered the drainage chamber 17 in time and collected on the arc-shaped part 15, allowing the water droplets to fall to the bottom of the sealing sleeve 9 as soon as possible, so that the water droplets can be discharged from the outlet 11 outside the sealing sleeve 9, and prevent the water droplets from continuing to absorb the heat of the steam inside the sealing sleeve 9. Furthermore, after the water droplets fall into the bottom of the sealing sleeve 9, the high-temperature steam has already come into contact with the condenser tube 4 as much as possible when it reaches the bottom of the sealing sleeve 9 from top to bottom. Therefore, the water droplets at the bottom of the sealing sleeve 9 have a relatively small impact on the steam energy.

[0059] refer to Figures 6 to 9Water droplets entering the drainage chamber 17 are drawn into the first and second converging channels 24 and 25 by the centrifugal force of the rotating scraper 13 under the influence of the first capillary groove 19 and the second capillary groove 22, respectively. The water droplets that converge in the first and second converging channels 24 and 25, due to their increased mass, flow downwards along these channels under their own gravity, eventually draining from the drain outlet 18 at the bottom of the drainage chamber 17 to the bottom of the sealing sleeve 9, facilitating their exit from the outlet 11. As the water droplets flow downwards from the drainage chamber 17, the heat insulation layer 23 on the inner wall of the drainage chamber 17 prevents them from absorbing the temperature of the steam inside the sealing sleeve 9 through the rigid part 1301, thus avoiding steam energy waste and ensuring that the steam can effectively heat the chemical wastewater, thereby improving the utilization efficiency of steam energy.

[0060] refer to Figures 7 to 9 It should be further explained that, since the scraper 13 is made of plastic, it has poor thermal conductivity. Therefore, except when the steam first enters the sealing sleeve 9 and the steam liquefies and releases heat on the outside of the scraper 13 because it has not yet been heated by the steam, once the steam heats the scraper 13, the heat on its outer surface is difficult to conduct to the condenser tube 4. Furthermore, the heat from the outside of the scraper 13 is difficult to transfer to the water droplets inside the drainage chamber 17 because of the heat insulation layer 23 inside the drainage chamber 17. Therefore, after the outside of the scraper 13 is heated, the steam entering the sealing sleeve 9 will not continue to liquefy and release heat on the outside of the scraper 13. Thus, the scraper 13 does not affect the heat release of the steam on the condenser tube 4.

[0061] Furthermore, refer to Figure 7 Since the scraper 13 is rotating, the water droplets that initially liquefy on the outer wall of the scraper 13 will eventually be thrown off by the centrifugal force brought by the rotating scraper 13 as the scraper 13 rotates, further preventing the subsequent steam entering the sealing sleeve 9 from liquefying on the outer surface of the scraper 13, thus ensuring the effectiveness of the equipment.

[0062] Finally, refer to Figure 4 , Figure 5 and Figure 7 After the high-temperature steam heats the outer wall of the condenser tube 4, the water droplets formed by the liquefaction of the steam will eventually be discharged from the outlet 11 into the heat exchange chamber 28. Some of the steam that did not have time to liquefy and release heat on the condenser tube 4 will also be discharged from the outlet 11 into the heat exchange chamber 28. Finally, all the water formed by the liquefaction of the steam inside the heat exchange chamber 28 will be discharged from the drain pipe 26 to the outside of the heat exchange chamber 28. This completes the entire operation of the equipment.

[0063] The specific embodiment of the present invention has been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the embodiments described above. For those skilled in the art, various changes, modifications, substitutions, and variations made to these embodiments without departing from the principles and ideas of the present invention should still fall within the protection scope of the present invention.

Claims

1. A chemical water separation reaction device, comprising an evaporator (1), wherein the evaporator (1) is provided with, from top to bottom, a liquid storage chamber (2) for storing wastewater, a heat exchange chamber (28) for steam heat exchange, and a collection chamber (3) for storing concentrated wastewater; the heat exchange chamber (28) is provided with a plurality of condenser tubes (4), the condenser tubes (4) connecting the liquid storage chamber (2) and the collection chamber (3); the liquid storage chamber (2) is provided with a distributor (5), the distributor (5) being used to evenly distribute the wastewater inside the liquid storage chamber (2) onto the inner wall of the condenser tubes (4) to form a water film; the top of the evaporator (1) is provided with an inlet (6) communicating with the liquid storage chamber (2); the bottom of the evaporator (1) is provided with an outlet (7) communicating with the collection chamber (3); and the heat exchange chamber (28) is provided with a steam pipe (8) for providing high-temperature steam to the heat exchange chamber (28), characterized in that, Each of the condenser tubes (4) is coaxially fitted with a sealing sleeve (9), and each sealing sleeve (9) is provided with a steam supply pipe (10), which is connected to the steam pipe (8). The bottom of the sealing sleeve (9) is provided with a water outlet (11). A rotating ring (12) is coaxially rotatably installed on the outer wall of the condenser tube (4). The rotating ring (12) is provided with a scraper (13) for abutting against the outer wall of the condenser tube (4). The sealing sleeve (9) is also provided with a drive assembly for driving the rotating ring (12) to rotate.

2. The chemical water separation reaction equipment according to claim 1, characterized in that, The drive assembly includes a connection port (14) between the steam supply pipe (10) and the sealing sleeve (9), with the steam outlet direction of the connection port (14) facing the tangential direction of the condenser pipe (4).

3. The chemical water separation reaction equipment according to claim 2, characterized in that, The scraper (13) includes a hard part (1301) and a scraping part (1302). The hard part (1301) is made of hard plastic and is fixedly connected to the rotating ring (12). The scraping part (1302) is made of elastic plastic sheet and is fixedly installed on the side of the hard part (1301) facing the condenser tube (4). The scraping part (1302) abuts against the outer wall of the condenser tube (4) and the abutting end is bent to form an arc-shaped part (15). The concave side of the arc-shaped part (15) faces the rotation direction (ω) of the rotating ring (12).

4. The chemical water separation reaction equipment according to claim 3, characterized in that, The outer wall of the condenser tube (4) is provided with an arc-shaped protrusion (16), which is arranged along the axial direction of the condenser tube (4) and is aligned with the scraping part (1302) in the axial direction of the condenser tube (4).

5. A chemical water separation reaction device according to claim 4, characterized in that, The rigid part (1301) has a drainage chamber (17) inside. The opening of the drainage chamber (17) faces the rigid part (1301) where the condenser tube (4) is located. The bottom of the drainage chamber (17) has a drain outlet (18). The side of the scraping part (1302) facing the concave part of the arc-shaped part (15) is flush with the inner wall of the drainage chamber (17). The scraping part (1302) has a plurality of first capillary grooves (19) facing the concave part of the arc-shaped part (15). The plurality of first capillary grooves (19) are evenly arranged on the scraping part (1302) along the axial direction of the condenser tube (4). The first capillary grooves (19) extend from the scraping part (1302) to the inner wall of the drainage chamber (17) which is flush with the side wall of the scraping part (1302). The plurality of first capillary grooves (19) are all inclined downward toward the drain outlet (18).

6. A chemical water separation reaction device according to claim 4, characterized in that, A sealing section (20) is provided on one side of the drainage chamber (17) opposite to the scraping section (1302). The sealing section (20) is made of an elastic plastic sheet. Multiple flow ports (21) are provided on the end of the sealing section (20) facing the condenser tube (4). The flow ports (21) all penetrate the sealing section (20). The multiple flow ports (21) are evenly arranged on the sealing section (20) along the axial direction of the condenser tube (4), and the multiple flow ports (21) are respectively connected to multiple first capillary grooves (19). Aligned one by one, the end of the sealing part (20) facing the condenser tube (4) is placed in the recess of the arc-shaped part (15) and forms a "V" shape with the scraping part (1302). The side of the sealing part (20) facing the scraping part (1302) is also provided with a plurality of second capillary grooves (22). The plurality of second capillary grooves (22) are aligned with a plurality of flow ports (21) and extend to the inner side wall of the drainage chamber (17). The second capillary grooves (22) are all inclined downward toward the drain port (18).

7. A chemical water separation reaction device according to claim 4, characterized in that, The sealing sleeve (9) is circular, and there are multiple scrapers (13). The multiple scrapers (13) are evenly distributed on the rotating ring (12) with the axis of the rotating ring (12) as the reference. The side of the scraper (13) away from the condenser (4) abuts against the inner wall of the sealing sleeve (9).

8. A chemical water separation reaction device according to claim 6, characterized in that, The inner side of each drainage chamber (17) is provided with a heat insulation layer (23), which is made of aerogel material. The first capillary groove (19) and the second capillary groove (22) are both opened on the heat insulation layer (23).

9. A chemical water separation reaction device according to claim 8, characterized in that, The heat insulation layer (23) is also provided with a first flow-gathering groove (24) and a second flow-gathering groove (25). The first flow-gathering groove (24) is located on one side of the flow-draining chamber (17) where the scraping part (1302) is located, and the second flow-gathering groove (25) is located on one side of the flow-draining chamber (17) where the sealing part (20) is located. The first capillary groove (19) is connected to the first flow-gathering groove (24), and the second capillary groove (22) is connected to the second flow-gathering groove (25). The first flow-gathering groove (24) and the second flow-gathering groove (25) are both set vertically downward, and the first flow-gathering groove (24) and the second flow-gathering groove (25) are both aligned with the water outlet (11).

Images