Desalted water equipment for cement plant process water treatment
By employing a distillation method and a heat-conducting plate preheating box in a cement plant, the problem of high salinity levels being unsuitable for direct cement production has been solved, achieving water resource utilization and environmental protection and energy conservation in water-scarce areas.
Patent Information
- Application Number
- CN202520632594.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-07
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-04-07
AI Technical Summary
In water-scarce regions, high salinity levels cannot be directly used for cement production, affecting the cement hydration rate and accelerating steel corrosion. Furthermore, using freshwater resources increases costs and exacerbates water scarcity.
High-salinity water is desalinated using distillation. The design incorporates a heat-conducting plate preheating box and an evaporation box. High-thermal-conductivity aluminum alloy heat-conducting plates are used for heat exchange. The heating device inside the evaporation box evaporates water vapor, and the condensate is used to preheat the water in the box, reducing heating power consumption and improving distillation efficiency. Scale buildup on the heating tubes is prevented by a descaling ring.
This enables the direct use of local brackish water resources in water-scarce areas, reducing dependence on freshwater, lowering cement production costs, improving cement quality, reducing pollution, and meeting environmental protection policy requirements.
Smart Images
Figure CN223752475U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to water treatment technical field, concretely is a cement plant process water treatment desalted water equipment. BACKGROUND
[0002] The total amount of dissolved solids of water source water used in the cement production process in China is generally low, whether it is surface water or groundwater. However, in water-deficient areas such as the arid regions of northwest China, the salt content of groundwater is generally 2000-8000 mg / L. These high-salinity water cannot be directly used for cement production, otherwise it will affect the cement hydration rate and accelerate the corrosion of steel bars. If fresh water resources are used, not only will the cost of cement production increase, but also the shortage of water resources will be exacerbated. Therefore, we propose a cement plant process water treatment desalted water equipment. SUMMARY
[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a cement plant process water treatment desalted water equipment that can alleviate water shortages, directly use local brackish water resources in water-deficient areas, reduce dependence on fresh water resources, and is particularly suitable for arid regions such as northwest China and north China, effectively solving the problems in the background art.
[0004] To achieve the above object, the utility model provides the following technical scheme: a cement plant process water treatment desalted water equipment, comprising a box-shaped main body, a heat-conducting plate is fixedly arranged on the inner side surface of the main body, the heat-conducting plate divides the inside of the main body into a preheating tank on the upper side and an evaporation tank on the lower side, a water inlet pipe is arranged on the upper surface of the preheating tank, a conduit is arranged at the lower part of the side surface of the preheating tank close to the lowest end of the heat-conducting plate, the other end of the conduit is communicated with the side surface of the evaporation tank close to the highest end of the heat-conducting plate, and a water pump is installed on the conduit; a heating device is installed inside the evaporation tank, a liquid collecting hopper is installed on the side surface of the evaporation tank close to the lowest end of the heat-conducting plate, and the liquid collecting hopper is communicated with a drain pipe.
[0005] As a preferred technical scheme of the utility model, the heating device comprises two concentric annular first heating pipes, a plurality of connecting rods are uniformly arranged between the two first heating pipes, a support rod is installed on the lower surface of the connecting rod, and the support rod is installed on the upper surface of the evaporation tank. One of the support rods and the connecting rod is internally provided with a wire connected with a corresponding control switch in a control box installed on the outer side surface of the evaporation tank.
[0006] As a preferred technical scheme of the utility model, the lower surface of the evaporation box is provided with a gear box, at least one driving gear and one driven gear are arranged in the gear box, the driven gear is installed on the outer side of the bottom of the rotating drum, the lower surface of the gear box is provided with a driving motor, the output shaft of the driving motor penetrates into the interior of the gear box and is connected with the driving gear, the driving gear and the driven gear are mutually engaged, the upper part of the rotating drum penetrates into the interior of the evaporation box, and the rotating drum is coaxially arranged with the two first heating pipes, a rotating frame is fixedly arranged on the outer side surface of the rotating drum, the rotating frame is arranged above the first heating pipe, and two first descaling rings corresponding to the two first heating pipes are installed on the rotating frame.
[0007] Compared with the prior art, the utility model has the beneficial effects that: the distillation method is used to carry out desalination treatment on high-salt water, the high-salt water filtered through multiple stages is sent into a preheating box, and then is sent into an evaporation box through a water pump through a conduit. The high-salt water filtered through multiple stages is heated through a heating device, water vapor evaporated rises to the heat-conducting plate arranged obliquely, the heat-conducting plate is made of aluminum alloy with high heat conductivity, and the water vapor exchanges heat with the water in the preheating box on the upside of the heat-conducting plate. The water vapor releases heat and condenses into water on the downside of the heat-conducting plate, and the water in the preheating box absorbs heat, so that the water can be preheated, thereby reducing the power consumption of the heating device and shortening the time of heating and distillation, which is conducive to energy saving and environmental protection. The water condensed on the heat-conducting plate flows into the collecting hopper along the lower surface thereof, and is discharged to an external water tank through a drain pipe, and can be used for the cement production process after passing the detection. The equipment can alleviate the shortage of water resources, directly use local brackish water resources in water-deficient areas, reduce the dependence on fresh water resources, and is especially suitable for arid areas such as northwest China and north China. Meanwhile, the pollution of the soil and underground water caused by the direct discharge of high-salt water can be reduced, which meets the requirements of the environmental protection policy. In addition, the water treated through desalination can avoid the negative influence on the cement setting and durability, and improve the cement and building quality. BRIEF DESCRIPTION OF DRAWINGS
[0008] Fig. 1 It is a structural schematic view of the utility model;
[0009] Fig. 2 It is a side view structural schematic view of the utility model;
[0010] Fig. 3 It is a partial structural schematic view of the utility model.
[0011] In the drawing: 1 main body, 2 preheating box, 3 water inlet pipe, 4 conduit, 5 evaporation box, 6 heat-conducting plate, 7 collecting hopper, 8 drain pipe, 9 control box, 10 supporting rod, 11 first heating pipe, 12 gear box, 13 rotating drum, 14 rotating frame, 15 first descaling ring, 16 connecting frame, 17 second descaling ring, 18 second heating pipe, 19 supporting frame, 20 connecting rod, 21 partition plate. DETAILED DESCRIPTION
[0012] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work fall within the scope of the present application.
[0013] Please refer to Figs. 1-3 The present application provides a technical solution: a desalted water equipment for treating process water in a cement plant, comprising a box-shaped main body 1, a heat-conducting plate 6 is fixedly arranged on the inner side surface of the main body 1 and is inclined, and the heat-conducting plate 6 is made of aluminum alloy with high heat conductivity. The heat-conducting plate 6 divides the inside of the main body 1 into an upper preheating tank 2 and a lower evaporation tank 5. The water vapor evaporated in the evaporation tank 5 rises and exchanges heat with the water in the preheating tank 2 on the upper side of the heat-conducting plate 6, so that the water in the preheating tank 2 can be preheated while being condensed.
[0014] The upper surface of the preheating tank 2 is provided with a water inlet pipe 3, the water inlet pipe 3 is communicated with an external filtering assembly, and the water inlet pipe 3 is used for sending high-salinity water filtered by multiple stages into the preheating tank 2.
[0015] A conduit 4 is arranged at the lower part of the side surface of the preheating tank 2 and close to the lowest end of the heat-conducting plate 6, the other end of the conduit 4 is communicated with the side surface of the evaporation tank 5 and close to the highest end of the heat-conducting plate 6, and a water pump is installed on the conduit 4. The high-salinity water filtered by multiple stages enters the preheating tank 2 and is then delivered into the evaporation tank 5 by the water pump through the conduit 4.
[0016] A heating device is installed in the evaporation tank 5, the high-salinity water filtered by multiple stages is heated by the heating device, the water vapor evaporated rises to the inclined heat-conducting plate 6, the water vapor is condensed into water by releasing heat on the lower side of the heat-conducting plate 6, and the water in the preheating tank 2 can be preheated, so as to reduce the power consumption of the heating device and shorten the heating and distillation time, which is conducive to energy saving and environmental protection.
[0017] A liquid collecting tank 7 is installed on the side surface of the evaporation tank 5 and close to the lowest end of the heat-conducting plate 6, the inlet of the liquid collecting tank 7 is larger, the outlet of the liquid collecting tank 7 is smaller, the outlet of the liquid collecting tank 7 is communicated with a drain pipe 8, the water condensed on the heat-conducting plate 6 flows into the liquid collecting tank 7 along the lower surface of the heat-conducting plate 6, and then is discharged to an external water tank through the drain pipe 8, and can be used for cement production process after being detected to be qualified.
[0018] The present application can alleviate water shortage, directly use local brackish water resources in water shortage areas, reduce the dependence on fresh water resources, and is especially suitable for arid areas such as northwest China and north China. Meanwhile, the present application can reduce the pollution of soil and underground water caused by direct discharge of high-salinity water, and meets the requirements of environmental protection policy.
[0019] In addition, the water treated by desalination can avoid negative effects on cement setting and durability, and improve cement and building quality, etc.
[0020] Preferably, the heating device comprises two concentric annular first heating pipes 11, and a plurality of connecting rods 20 are evenly arranged between the two first heating pipes 11 for connecting and fixing the two first heating pipes 11. The lower surface of the connecting rod 20 is provided with a support rod 10, which is installed on the upper surface of the evaporation tank 5 for supporting and fixing the first heating pipe 11. One of the support rods 10 and the connecting rod 20 are hollow inside and provided with wires connected with corresponding control switches inside the control box 9 installed on the outer surface of the evaporation tank 5. The opening and power of the two first heating pipes 11 can be controlled by pressing the corresponding control switches in the control box 9.
[0021] The two annular first heating pipes 11 can make the heating of high-salt water in the device more uniform, and improve the efficiency of distillation desalination.
[0022] The control box 9 can also be provided with commonly used controllers, such as Arduino single-chip microcomputer or Siemens S7 series PLC controller, etc. The program can be set in advance to automatically heat and distill high-salt water. At the same time, a temperature sensor can be arranged in the evaporation tank 5 to detect the water temperature in the evaporation tank 5 and transmit corresponding signals to the controller, so that the device can automatically control the opening and power of the first heating pipe 11 according to the water temperature and evaporation conditions, etc.
[0023] Optionally, the lower surface of the evaporation tank 5 is provided with a gear box 12, and the gear box 12 is provided with a driving gear and a driven gear. The driving gear and the driven gear are meshed with each other. The lower surface of the gear box 12 is provided with a driving motor, which is electrically connected with corresponding control switches or controllers in the control box 9. The output shaft of the driving motor penetrates into the inside of the gear box 12 and is connected with the driving gear. The driving motor drives the driven gear to rotate through the driving gear. The driven gear is installed on the outer side of the bottom of the rotating drum 13. The upper part of the rotating drum 13 penetrates into the inside of the evaporation tank 5 and rotates in the evaporation tank 5. The rotating drum 13 is coaxially arranged with the two first heating pipes 11. The outer surface of the rotating drum 13 is fixedly provided with a rotating frame 14, which is arranged above the first heating pipe 11. The rotating frame 14 is provided with two first descaling rings 15 corresponding to the two first heating pipes 11. The first descaling rings 15 are arranged on the outer side of the first heating pipe 11. When the rotating drum 13 rotates, the two first descaling rings 15 can be driven to rotate on the outer side of the two first heating pipes 11 through the rotating frame 14, so as to remove the scale generated on the surface of the first heating pipe 11 during evaporation of high-salt water, thereby avoiding the reduction of heating efficiency caused by the scale on the surface of the first heating pipe 11.
[0024] The lower part or bottom of the evaporation tank 5 can be provided with a blowdown pipe for discharging scale, which is opened periodically and cleaned by flushing or other common methods.
[0025] Further, the heating device further comprises two concentric annular second heating pipes 18, and a plurality of connecting rods 20 are uniformly arranged between the two second heating pipes 18 for connecting and fixing the two second heating pipes 18. By arranging the second heating pipes 18, the heating efficiency of high-salinity water can be further improved, and the heating is more uniform.
[0026] The fixed rods are fixedly installed inside the evaporation tank 5, and the rotating drum 13 is arranged outside the fixed rods. The connection between the rotating drum 13 and the fixed rods and the connection between the rotating drum 13 and the evaporation tank 5 are both provided with rotating seals.
[0027] The top ends of the fixed rods are uniformly provided with a plurality of support frames 19, and the top ends of the support frames 19 are fixedly connected with the lower surfaces of the connecting rods 20 between the second heating pipes 18 for supporting and fixing the second heating pipes 18. The fixed rods and one of the support frames 19 are provided with wires connected with corresponding control switches in the control box 9 installed on the outer surface of the evaporation tank 5. The opening and power of the two second heating pipes 18 are controlled by corresponding control switches or controllers in the control box 9.
[0028] The controller, driving motor, first heating pipe 11, second heating pipe 18, and temperature sensor used in the present application are all common electronic components in the prior art, and their specific structure, working principle, control mode, and circuit connection are all known technologies, which will not be described in detail here.
[0029] Further, the connecting frame 16 is installed on the side of the rotating frame 14 away from the fixed rods, the connecting frame 16 is arranged above the second heating pipes 18, and the connecting frame 16 is provided with two second scale removal rings 17 corresponding to the two second heating pipes 18. When the rotating drum 13 rotates, the rotating frame 14 and the connecting frame 16 can rotate synchronously, thereby driving the second scale removal rings 17 to rotate outside the second heating pipes 18, so as to remove the scale generated on the surface of the second heating pipes 18 during evaporation of high-salinity water, thereby avoiding the reduction of the heating efficiency of the second heating pipes 18 due to the scale on the surface.
[0030] The first scale removal ring 15 and the second scale removal ring 17 each comprise two half rings hingedly connected with each other, and the hinge connection between the two half rings is provided with a torsion spring, which is similar to a common clip structure. The hinge connection position of the two half rings is arranged away from the connecting rod 20, and the scale removal ring is clamped outside the heating pipe and can be opened when rotating to the connecting rod 20, so as to smoothly pass through the connecting rod 20 and complete a full circle of rotation for scale removal of the heating pipe.
[0031] Further, the cross section of the connecting rod 20 is diamond-shaped, with thinner ends to facilitate the opening of the cleaning ring and thicker middle to provide a reliable fixed connection.
[0032] Preferably, the lower surface of the heat-conducting plate 6 is provided with a partition 21 near the outlet of the conduit 4, the bottom end of the partition 21 not being in contact with the inner surface of the evaporation tank 5, so that the water in the preheating tank 2 entering the evaporation tank 5 through the conduit 4 is blocked by the partition 21 and does not affect the water condensed on the heat-conducting plate 6, avoiding the entry of water not subjected to desalination into the collecting hopper 7 and affecting the quality of the cement.
[0033] The un-disclosed parts in the utility model are all prior arts, and the specific structure, material and working principle are not described in detail. Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. A desalination plant for the treatment of process water in a cement factory, comprising a box-shaped body (1), characterized in that: The inner side surface of the main body (1) is fixedly provided with a heat conduction plate (6), which separates the main body (1) into an upper preheating box (2) and a lower evaporation box (5). The upper surface of the preheating box (2) is provided with a water inlet pipe (3), and the lower part of the side surface of the preheating box (2) is provided with a guide pipe (4) near the lowest end of the heat conduction plate (6). The other end of the guide pipe (4) is communicated with the side surface of the evaporation box (5) near the highest end of the heat conduction plate (6), and a water pump is installed on the guide pipe (4). The evaporation box (5) is internally provided with a heating device, and the side surface of the evaporation box (5) is provided with a liquid collecting tank (7) near the lowest end of the heat conduction plate (6). The liquid collecting tank (7) is communicated with a drain pipe (8).
2. A cement plant process water treatment desalinated water apparatus according to claim 1, characterized by: The heating device comprises two concentric annular first heating pipes (11), and a plurality of connecting rods (20) are uniformly arranged between the two first heating pipes (11). The lower surface of the connecting rod (20) is provided with a support rod (10), and the support rod (10) is installed on the upper surface of the evaporation box (5). One of the support rods (10) and the connecting rod (20) is internally provided with a wire connected with a corresponding control switch in the control box (9) installed on the outer surface of the evaporation box (5).
3. A cement plant process water treatment desalinated water apparatus according to claim 2, characterized by: The lower surface of the evaporation box (5) is provided with a gear box (12), and at least one driving gear and one driven gear are arranged in the gear box (12). The driven gear is installed on the outer side of the bottom of a rotating drum (13). A driving motor is installed on the lower surface of the gear box (12), and the output shaft of the driving motor penetrates into the interior of the gear box (12) and is connected with the driving gear. The driving gear and the driven gear are meshed with each other. The upper part of the rotating drum (13) penetrates into the interior of the evaporation box (5), and the rotating drum (13) is coaxially arranged with the two first heating pipes (11). A rotating frame (14) is fixedly arranged on the outer surface of the rotating drum (13) and is arranged above the first heating pipe (11). Two first descaling rings (15) corresponding to the two first heating pipes (11) are installed on the rotating frame (14).
4. A cement plant process water treatment desalinated water apparatus according to claim 3, characterized in that: The heating device further comprises two concentric annular second heating pipes (18), and a plurality of connecting rods (20) are uniformly arranged between the two second heating pipes (18). A fixed rod is fixedly installed in the interior of the evaporation box (5), and the rotating drum (13) is rotatably arranged on the outer side of the fixed rod. A plurality of support frames (19) are uniformly arranged on the top end of the fixed rod. The top end of the support frame (19) is fixedly connected with the lower surface of the connecting rod (20) between the second heating pipe (18). The fixed rod and one of the support frames (19) are internally provided with a wire connected with a corresponding control switch in the control box (9) installed on the outer surface of the evaporation box (5).
5. A cement plant process water treatment desalinated water apparatus according to claim 4, characterized by: The connecting frame (16) is arranged above the second heating pipes (18), and two second descaling rings (17) corresponding to the two second heating pipes (18) are arranged on the connecting frame (16).
6. A cement plant process water treatment desalinated water apparatus according to claim 5, characterized by: The cross section of the connecting rod (20) is in the shape of a rhombus.
7. A cement plant process water treatment desalinated water apparatus according to any one of claims 1-6, characterized in that: The lower surface of the heat-conducting plate (6) is provided with a partition plate (21) near the outlet of the conduit (4), and the bottom end of the partition plate (21) is not in contact with the inner surface of the evaporation box (5).