Synergistic fused salt granulation device of fused salt energy storage and supply system

Abstract

The utility model belongs to the technical field of fused salt granulation devices, and particularly relates to a fused salt granulation device cooperating with a fused salt energy storage and supply system, which comprises a spiral mixer, a constant-temperature uniform mixing tank, a jet granulator and a granulation tower, a discharge port of the spiral mixer is communicated with a feed port of the constant-temperature uniform mixing tank, and a discharge port of the jet granulator is communicated with a discharge port of the constant-temperature uniform mixing tank. A discharge port of the constant-temperature uniform mixing tank is connected with a feed port of the jet granulator, and a discharge port of the jet granulator is inserted into the granulation tower by taking the central axis of the granulation tower as the center. According to the molten salt particle drying device, the temperature of molten salt slurry can be uniform and controllable, the granulation quality of the device is ensured, the collision strength of molten salt particles and the collecting funnel is reduced while the molten salt particles are dried, and the forming quality of the molten salt particles is effectively improved; and the solid molten salt and the liquid molten salt entering the constant-temperature uniform mixing tank can be uniformly scattered to the inner wall of the constant-temperature uniform mixing tank.

Description

TECHNICAL FIELD

[0001] The utility model relates to molten salt granulation device technical field, specifically, the utility model relates to a kind of molten salt energy storage and supply system cooperation molten salt granulation device. BACKGROUND

[0002] Molten salt production enterprise is both raw material supplier in the field of photo-thermal molten salt energy storage and supply, and also user of molten salt energy storage and supply system, still uses independent electric heating (or steam) salt system at present stage, molten salt is melted by extrusion granulation, jet granulation etc., and molten salt granulation is carried out, molten salt energy storage and supply system and molten salt system cannot be effectively cooperated, for molten salt production enterprise, both increase the cost of granulation, and cause energy waste. CONTENT OF UTILITY MODEL

[0003] Therefore, the utility model provides a kind of molten salt energy storage and supply system cooperation molten salt granulation device, to solve or at least alleviate the above-mentioned problems existing in prior art.

[0004] In order to realize the foregoing object, the utility model provides a kind of molten salt energy storage and supply system cooperation molten salt granulation device, including: spiral mixer, constant temperature mixing tank, jet granulator and granulation tower, the discharge port of the spiral mixer is connected with the feed inlet of constant temperature mixing tank, the discharge port of the constant temperature mixing tank is connected with the feed inlet of jet granulator, the discharge port of the jet granulator is inserted into granulation tower with the central axis of granulation tower as center.

[0005] In the molten salt energy storage and supply system cooperation molten salt granulation device as described above, optionally, the spiral mixer feed side is respectively provided with liquid molten salt feed inlet and solid molten salt feed inlet, the first servo motor is fixedly installed outside the spiral mixer, the output end of the first servo motor is fixedly installed with spiral conveying rod, and the spiral conveying rod is rotatably installed in the spiral mixer.

[0006] In the molten salt energy storage and supply system cooperation molten salt granulation device as described above, optionally, the second servo motor is fixedly installed at the top of the constant temperature mixing tank, the output end of the second servo motor is fixedly installed with stirrer, the stirrer is rotatably installed in the constant temperature mixing tank, the bottom end outer wall of the stirrer is fixedly installed with stirring rod, the constant temperature mixing tank is sleeved with spiral heat exchange coil in the shell, the upper region, middle region and lower region in the constant temperature mixing tank are all provided with through hole, and the temperature sensor is inserted into the through hole.

[0007] In the molten salt energy storage system cooperates with the molten salt granulator device, optionally, the jet granulator includes molten salt pipe, molten salt pump and nozzle, the molten salt pump is fixedly installed in the inside of molten salt pipe, the nozzle is fixedly installed with air pipe, the air pipe is away from the one end of nozzle and penetrates the outer wall of molten salt pipe, and is fixedly installed with air compressor.

[0008] In the molten salt energy storage system cooperates with the molmolten salt granulator device, optionally, the granulation tower includes collection cylinder and collection funnel, the bottom of collection cylinder is fixedly connected with the top of collection funnel, a plurality of annular air outlets are formed in the collection funnel, the annular air outlets are connected with the hot air blower through pipeline, the annular air outlets are uniformly provided with guide plates, and the guide plates form an angle of 15°-90° with the inclined surface of the collection funnel.

[0009] In the molten salt energy storage system cooperates with the molmolten salt granulator device, optionally, the inside of the constant-temperature mixing tank is fixedly installed with a receiving hopper, the receiving hopper is arranged below the discharge port of the spiral mixer, the stirrer penetrates the receiving hopper, the stirrer is fixedly installed with a scraper in the area of the receiving hopper, and the outer wall of the scraper is connected with the inner wall of the receiving hopper.

[0010] In the molten salt energy storage system cooperates with the molmolten salt granulator device, optionally, the stirrer is fixedly installed with a rotating disc in the area below the receiving hopper, the diameter of the rotating disc is smaller than the inner diameter of the constant-temperature mixing tank, the top surface of the rotating disc is fixedly installed with a baffle, and the end of the baffle is fixedly installed with an extension plate.

[0011] In the molten salt energy storage system cooperates with the molmolten salt granulator device, optionally, the extension plate is installed obliquely, the upper and lower sides of the extension plate are fixedly installed with connecting plates, the top end of the connecting plate on the upper side is flush with the bottom end of the receiving hopper, and the extension plate and the connecting plate are in contact with the inner wall of the constant-temperature mixing tank.

[0012] The molten salt energy storage system cooperates with the molmolten salt granulator device, which mixes solid molten salt and liquid molten salt in the molten salt energy storage system in proportion, increases a stirrer, a heat exchange coil and a temperature sensor in a constant-temperature mixing tank, increases annular air outlets on the inclined surface of a collection funnel in a granulation tower, can realize uniform and controllable molten salt slurry temperature, guarantees equipment granulation quality, reduces the collision intensity of molten salt particles and the collection funnel while drying molten salt particles, effectively improves molten salt particle forming quality, and fixedly installs a rotating disc on the stirrer, so that solid molten salt and liquid molten salt entering the inside of the constant-temperature mixing tank can be uniformly scattered to the inner wall of the constant-temperature mixing tank. BRIEF DESCRIPTION OF DRAWINGS

[0013] The disclosure of this utility model will become more apparent with reference to the accompanying drawings. It should be understood that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this utility model. In the drawings:

[0014] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present invention.

[0015] Figure 2 This is a schematic diagram of the internal structure of the constant temperature mixing tank in Embodiment 1 of this utility model.

[0016] Figure 3 This is a schematic diagram of the annular air outlet structure of the collection funnel in Embodiment 1 of this utility model.

[0017] Figure 4 This is a schematic diagram of the constant temperature mixing tank in Embodiment 2 of this utility model.

[0018] Figure 5 This is a cross-sectional view of the thermostatic mixing tank in Embodiment 2 of this utility model.

[0019] Figure reference numerals: 1. Spiral mixer; 1-1. Liquid molten salt inlet; 1-2. Solid molten salt inlet; 1-3. Spiral conveyor rod; 1-4. First servo motor; 1-5. Control valve; 2. Constant temperature mixing tank; 2-1. Agitator; 2-11. Rotating rod; 2-12. Scraper; 2-13. Turntable; 2-14. Baffle; 2-15. Extension plate; 2-16. Connecting plate; 2-2. Heat exchange plate 1. Pipe; 2.3. Temperature sensor; 2.4. Thermal insulation material; 2.5. Second servo motor; 2.6. Spiral groove; 2.7. Receiving funnel; 3. Jet granulator; 3.1. Nozzle; 3.2. Air pipe; 3.3. Air compressor; 3.4. Molten salt pipe; 3.5. Molten salt pump; 4. Granulation tower; 4.1. Collection cylinder; 4.2. Collection funnel; 4.3. Annular air outlet; 4.4. Guide plate. Detailed Implementation

[0020] The technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0021] like Figures 1 to 3As shown in Embodiment 1, a molten salt energy storage and supply system in conjunction with a molten salt granulation device includes: a spiral mixer 1, a constant temperature mixing tank 2, a jet granulator 3, and a granulation tower 4. The discharge port of the spiral mixer 1 is connected to the inlet of the constant temperature mixing tank 2, and the discharge port of the constant temperature mixing tank 2 is connected to the inlet of the jet granulator 3. The discharge port of the jet granulator 3 is inserted into the granulation tower 4 with the central axis of the granulation tower 4 as the center.

[0022] When molten salt granulation is required, solid molten salt and liquid molten salt are conveyed into the spiral mixer 1. The spiral mixer 1 conveys the solid molten salt and liquid molten salt into the constant temperature mixing tank 2, where they are initially mixed. When the solid molten salt and liquid molten salt enter the constant temperature mixing tank 2, they are fully mixed inside the tank. At the same time, the temperature inside the constant temperature mixing tank 2 melts the solid molten salt, ensuring thorough mixing. After the solid molten salt and liquid molten salt are fully mixed, they enter the jet granulator 3, where the melted solid molten salt and liquid molten salt are sprayed into the granulation tower 4, thus processing the solid molten salt and liquid molten salt into molten salt.

[0023] The spiral mixer 1 is provided with a liquid molten salt inlet 1-1 and a solid molten salt inlet 1-2 on the feed side. A first servo motor 1-4 is fixedly installed on the outside of the spiral mixer 1. A spiral conveying rod 1-3 is fixedly installed on the output end of the first servo motor 1-4. The spiral conveying rod 1-3 is rotatably installed inside the spiral mixer 1.

[0024] Specifically, control valves 1-5 are provided on both the liquid molten salt inlet 1-1 and the solid molten salt inlet 1-2. Solid molten salt and liquid molten salt are fed into the spiral mixer 1 from the solid molten salt inlet 1-2 and the liquid molten salt inlet 1-1 respectively in proportion. The first servo motor 1-4 is started to drive the spiral conveyor rod 1-3 to rotate, so that the solid molten salt and liquid molten salt are initially mixed inside the spiral mixer 1, and then the solid molten salt and liquid molten salt are moved from the inside of the spiral mixer 1 to the inside of the constant temperature mixing tank 2.

[0025] A second servo motor 2-5 is fixedly installed at the top of the constant temperature mixing tank 2. A stirrer 2-1 is fixedly installed at the output end of the second servo motor 2-5. The stirrer 2-1 is rotatably installed inside the constant temperature mixing tank 2. A stirring rod is fixedly installed on the outer wall of the bottom end of the stirrer 2-1. A spiral heat exchange coil 2-2 is sleeved inside the shell of the constant temperature mixing tank 2. Through holes are opened in the upper, middle and lower regions of the constant temperature mixing tank 2. Temperature sensors 2-3 are inserted into the through holes.

[0026] Specifically, the outer wall of the constant temperature mixing tank 2 is provided with continuous spiral grooves 2-6, and the heat exchange coil 2-2 is installed in the spiral grooves 2-6. The space between the outer walls of the constant temperature mixing tank 2 and the heat exchange coil 2-2 is filled with heat insulation material 2-4. At the same time, a heat insulation layer is also installed on the outside of the constant temperature mixing tank 2. The heat insulation material layer and the heat insulation material reduce the heat loss of the thermal medium in the constant temperature mixing tank 2 and the heat exchange coil 2-2 to the external space, further improving the temperature control effect of the constant temperature mixing tank 2. When solid molten salt and liquid molten salt enter the constant temperature mixing tank 2, the high temperature molten salt inside the molten salt hot tank is kept at a constant temperature. The molten salt enters through the top of the heat exchange coil 2-2 and heats and keeps the constant temperature mixing tank 2 warm through heat exchange. After releasing heat, the molten salt flows out from the bottom of the heat exchange coil 2-2 and enters the molten salt hot tank of the molten salt energy supply system for reheating. When the inside of the constant temperature mixing tank 2 is heated, the second servo motor 2-5 is started to drive the stirrer 2-1 to rotate. When the stirrer 2-1 rotates, it can drive the stirring rod to rotate, so that the solid molten salt and the liquid molten salt are mixed inside the constant temperature mixing tank 2, so that the solid molten salt and the liquid molten salt are fully mixed.

[0027] The jet granulator 3 includes a molten salt pipe 3-4, a molten salt pump 3-5, and a nozzle 3-1. The molten salt pump 3-5 is fixedly installed inside the molten salt pipe 3-4. An air pipe 3-2 is fixedly installed on the nozzle 3-1. The end of the air pipe 3-2 away from the nozzle 3-1 passes through the outer wall of the molten salt pipe 3-4 and is fixedly installed with an air compressor 3-3.

[0028] After the solid and liquid molten salts inside the constant temperature mixing tank 2 are fully mixed, the molten salt pump 3-5 is started to pump the mixed solid and liquid molten salts from inside the constant temperature mixing tank 2 into the molten salt pump 3-5. At the same time, the air compressor 3-3 is started so that the mixed solid and liquid molten salts are sprayed into the granulation tower 4 through high temperature gas.

[0029] The granulation tower 4 includes a collection cylinder 4-1 and a collection funnel 4-2. The bottom end of the collection cylinder 4-1 is fixedly connected to the top end of the collection funnel 4-2. The collection funnel 4-2 is provided with several annular air outlets 4-3. The annular air outlets 4-3 are connected to a hot air blower through pipes. Guide plates 4-4 are evenly arranged inside the annular air outlets 4-3. The guide plates 4-4 form an angle of 15°-90° with the inclined surface of the collection funnel 4-2.

[0030] When the mixed molten salt is sprayed into the granulation tower 4 by the jet granulator 3, the hot air blower dries the mixed molten salt. By changing the tilt angle of the guide plate 4-4, the air direction of the annular air outlet 4-3 is changed. By adjusting the air speed and air direction, the landing point of the molten salt particles is adjusted, the falling speed of the molten salt particles is slowed down, and the granulation quality is further improved.

[0031] like Figures 4 to 5As shown, in Embodiment 2, a receiving funnel 2-7 is fixedly installed inside the constant temperature mixing tank 2. The receiving funnel 2-7 is located below the discharge port of the spiral mixer 1. The agitator 2-1 passes through the receiving funnel 2-7. A scraper 2-12 is fixedly installed in the area of ​​the agitator 2-1 located in the receiving funnel 2-7. The outer wall of the scraper 2-12 is in contact with the inner wall of the receiving funnel 2-7.

[0032] When solid and liquid molten salt enter the constant temperature mixing tank 2 from the spiral mixer 1, they enter the receiving funnel 2-7, allowing them to flow out from the outlet of the receiving funnel 2-7 and enter the central part of the constant temperature mixing tank 2. When the agitator 2-1 rotates, it drives the scraper 2-12 to rotate. When the scraper 2-12 rotates, it pushes the solid and liquid molten salt on the receiving funnel 2-7, so that the solid and liquid molten salt are evenly distributed in the circumference of the receiving funnel 2-7. This makes the solid and liquid molten salt more uniform around the inside of the constant temperature mixing tank 2 when they fall, making it easier for the solid molten salt to melt and the solid and liquid molten salt to mix more evenly.

[0033] A turntable 2-13 is fixedly installed in the area below the receiving funnel 2-7 of the agitator 2-1. The diameter of the turntable 2-13 is smaller than the inner diameter of the constant temperature mixing tank 2. A baffle 2-14 is fixedly installed on the top surface of the turntable 2-13. An extension plate 2-15 is fixedly installed at the end of the baffle 2-14.

[0034] When the stirrer 2-1 rotates, it can drive the turntable 2-13 and the baffle to rotate. When the turntable 2-13 rotates, it can provide centrifugal force. At the same time, the turntable 2-13 can receive solid molten salt and liquid molten salt, so that when the solid molten salt and liquid molten salt fall, they can be evenly scattered into the constant temperature mixing tank 2 by the turntable 2-13, so that the solid molten salt can melt more easily and the solid molten salt and liquid molten salt can be mixed more evenly.

[0035] The extension plate 2-15 is installed at an angle, and connecting plates 2-16 are fixedly installed on both the upper and lower sides of the extension plate 2-15. The top of the upper connecting plate 2-16 is flush with the bottom of the receiving funnel 2-7. Both the extension plate 2-15 and the connecting plate 2-16 are in contact with the inner wall of the constant temperature mixing tank 2.

[0036] When the baffle 2-14 rotates, it can drive the extension plate 2-15 to rotate on the inner wall of the constant temperature mixing tank 2, so that the connecting plate 2-16 and the extension plate 2-15 can scrape off the solid molten salt and liquid molten salt scattered on the inner wall of the constant temperature mixing tank 2. The connecting plate 2-16 can increase the coverage of the extension plate 2-15 and scrape off the solid molten salt and liquid molten salt stuck inside the constant temperature mixing tank 2, so that the solid molten salt and liquid molten salt can be fully stirred by the stirring rod inside the bottom of the constant temperature mixing tank 2.

[0037] The technical scope of this utility model is not limited to the contents of the above description. Those skilled in the art can make various modifications and variations to the above embodiments without departing from the technical concept of this utility model, and all such modifications and variations should fall within the scope of this utility model.

Claims

1. A molten salt energy storage and supply system in conjunction with a molten salt granulation device, characterized in that, include: The spiral mixer (1), the constant temperature mixing tank (2), the jet granulator (3) and the granulation tower (4) are connected. The discharge port of the spiral mixer (1) is connected to the inlet of the constant temperature mixing tank (2). The discharge port of the constant temperature mixing tank (2) is connected to the inlet of the jet granulator (3). The discharge port of the jet granulator (3) is inserted into the granulation tower (4) with the central axis of the granulation tower (4) as the center. A second servo motor (2-5) is fixedly installed at the top of the constant temperature mixing tank (2). A stirrer (2-1) is fixedly installed at the output end of the second servo motor (2-5). The stirrer (2-1) is rotatably installed inside the constant temperature mixing tank (2). A stirring rod is fixedly installed on the outer wall of the bottom end of the stirrer (2-1). A spiral heat exchange coil (2-2) is sleeved inside the shell of the constant temperature mixing tank (2). Through holes are opened in the upper, middle and lower regions of the constant temperature mixing tank (2). A temperature sensor (2-3) is inserted into the through hole.

2. The molten salt energy storage and supply system combined with molten salt granulation device as described in claim 1, characterized in that, The spiral mixer (1) is provided with a liquid molten salt inlet (1-1) and a solid molten salt inlet (1-2) on the feed side. A first servo motor (1-4) is fixedly installed on the outside of the spiral mixer (1). A spiral conveying rod (1-3) is fixedly installed at the output end of the first servo motor (1-4). The spiral conveying rod (1-3) is rotatably installed inside the spiral mixer (1).

3. The molten salt energy storage and supply system combined with molten salt granulation device as described in claim 1, characterized in that, The jet granulator (3) includes a molten salt pipe (3-4), a molten salt pump (3-5), and a nozzle (3-1). The molten salt pump (3-5) is fixedly installed inside the molten salt pipe (3-4). An air pipe (3-2) is fixedly installed on the nozzle (3-1). The end of the air pipe (3-2) away from the nozzle (3-1) passes through the outer wall of the molten salt pipe (3-4) and is fixedly installed with an air compressor (3-3).

4. The molten salt energy storage and supply system combined with molten salt granulation device as described in claim 1, characterized in that, The granulation tower (4) includes a collection cylinder (4-1) and a collection funnel (4-2). The bottom end of the collection cylinder (4-1) is fixedly connected to the top end of the collection funnel (4-2). The collection funnel (4-2) has several annular air outlets (4-3). The annular air outlets (4-3) are connected to a hot air blower through pipes. Guide plates (4-4) are evenly arranged inside the annular air outlets (4-3). The guide plates (4-4) form an angle of 15°-90° with the inclined surface of the collection funnel (4-2).

5. The molten salt energy storage and supply system combined with molten salt granulation device as described in claim 1, characterized in that, The constant temperature mixing tank (2) is fixedly installed with a receiving funnel (2-7). The receiving funnel (2-7) is located below the discharge port of the spiral mixer (1). The agitator (2-1) passes through the receiving funnel (2-7). The agitator (2-1) is fixedly installed with a scraper (2-12) in the area of ​​the receiving funnel (2-7). The outer wall of the scraper (2-12) is in contact with the inner wall of the receiving funnel (2-7).

6. The molten salt energy storage and supply system combined with molten salt granulation device as described in claim 5, characterized in that, The stirrer (2-1) is fixedly installed with a turntable (2-13) in the area below the receiving funnel (2-7). The diameter of the turntable (2-13) is smaller than the inner diameter of the constant temperature mixing tank (2). A baffle (2-14) is fixedly installed on the top surface of the turntable (2-13), and an extension plate (2-15) is fixedly installed at the end of the baffle (2-14).

7. The molten salt energy storage and supply system co-processing molten salt granulation device as described in claim 6, characterized in that, The extension plate (2-15) is installed at an angle. Connecting plates (2-16) are fixedly installed on both the upper and lower sides of the extension plate (2-15). The top of the upper connecting plate (2-16) is flush with the bottom of the receiving funnel (2-7). Both the extension plate (2-15) and the connecting plate (2-16) are in contact with the inner wall of the constant temperature mixing tank (2).

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