Efficient anti-blocking rotary atomization drying tower

Abstract

The utility model relates to rotary atomization drying tower technical field discloses a high -efficient anti -blocking type rotary atomization drying tower, including tower body and bin pump, the top of tower body is equipped with rotary atomizer and first air inlet pipe, the rotary atomizer is used for atomizing the material of outside input, the bottom of tower body with the top intercommunication of bin pump, the bottom of bin pump is equipped with second air inlet pipe and discharge pipe respectively, the discharge pipe is used for outputting the material after drying, the discharge pipe is equipped with first valve and second valve, the discharge pipe is equipped with third air inlet pipe, third air inlet pipe is located between first valve and second valve, the discharge pipe is equipped with unblocking pipe, the unblocking pipe is equipped with unblocking valve, the both ends of unblocking pipe are connected with discharge pipe and tower body respectively, the unblocking pipe is located between first valve and third air inlet pipe, be equipped with the protective cover in tower body, the protective cover is used for preventing the material from entering unblocking pipe.

Description

Technical Field

[0001] This utility model relates to the field of rotary atomizing drying tower technology, and in particular to a high-efficiency anti-clogging rotary atomizing drying tower. Background Technology

[0002] Rotary sprayers are highly adaptable to varying suspended solids and salt content in desulfurization wastewater and can operate under conditions of wide flow fluctuations. The rotary sprayer atomizes the desulfurization wastewater, then mixes it with high-temperature flue gas, rapidly evaporating the water in the atomized wastewater and precipitating the salts. These salts are then pumped to the next process stage. Typically, the precipitated salts are pneumatically conveyed using compressed air. However, because the precipitated salts still contain trace amounts of moisture, the compressed air can cause them to clump together in the pipes, potentially clogging them.

[0003] The technical problem this invention aims to solve is: how to prevent material from clogging the pipes after the drying tower has finished drying. Summary of the Invention

[0004] The main purpose of this utility model is to provide a high-efficiency anti-clogging rotary atomizing drying tower. By setting a deblocking pipe on the discharge pipe of the silo pump, a deblocking valve is set on the deblocking pipe, and a third air inlet pipe is set on the discharge pipe. When the silo pump finishes conveying the material or the discharge pipe is blocked, the first valve and the second valve are closed, the deblocking valve is opened, and compressed air is introduced into the third air inlet pipe. By backflushing, the material in the discharge pipe enters the tower body through the deblocking pipe, thereby avoiding the blockage of the discharge pipe.

[0005] To achieve the above objectives, the technical solution adopted in this application is as follows: A high-efficiency, anti-clogging rotary atomizing drying tower includes a tower body and a chamber pump. The top of the tower body is equipped with a rotary atomizer and a first air inlet pipe. The rotary atomizer atomizes externally input materials. The first air inlet pipe supplies hot air to the tower body. The bottom of the tower body is connected to the top of the chamber pump. The bottom of the chamber pump is equipped with a second air inlet pipe and a discharge pipe. The second air inlet pipe supplies compressed air to the chamber pump. The discharge pipe discharges the dried material. The discharge pipe has a first valve and a second valve. The discharge pipe also has a third air inlet pipe located between the first and second valves, supplying compressed air to the discharge pipe. The discharge pipe has a blockage-removing pipe with a blockage-removing valve. Both ends of the blockage-removing pipe are connected to the discharge pipe and the tower body, respectively. The blockage-removing pipe is located between the first valve and the third air inlet pipe. A protective cover is provided inside the tower body to prevent materials from entering the blockage-removing pipe.

[0006] Preferably, the bottom of the protective cover is provided with a discharge port, and a plurality of first baffles are provided inside the protective cover. The plurality of first baffles are connected obliquely downward inside the protective cover and are arranged at intervals from top to bottom inside the protective cover. The plurality of first baffles form a serpentine material conveying channel. The connection end of the blockage discharge pipe to the tower body is located inside the protective cover and above the first baffles.

[0007] Preferably, the top of the protective cover is provided with a material guiding surface, which is arranged obliquely downward on the top of the protective cover.

[0008] Preferably, the top of the tower body is provided with a flue gas distributor, the first air inlet pipe is connected to the tower body through the flue gas distributor, the first air inlet pipe is provided with a first flow meter, the rotary atomizer is provided with a liquid inlet pipe, and the liquid inlet pipe is provided with a second flow meter.

[0009] Preferably, both the first air inlet pipe and the liquid inlet pipe are provided with a third valve, and both the second air inlet pipe and the third air inlet pipe are provided with a fourth valve.

[0010] Preferably, the tower body is provided with a gas outlet pipe, which is used to output the gas inside the tower body.

[0011] Preferably, the tower body is provided with a second baffle plate, the second baffle plate includes a first inclined section and a second inclined section, the first inclined section is arranged obliquely downward in the direction toward the center of the tower body, one end of the first inclined section is connected to the inner wall of the tower body, and the other end is connected to the end of the second inclined section, the second inclined section is arranged obliquely downward in the direction away from the center of the tower body, the first inclined section and the second inclined section form an accommodating space, and the end of the air outlet pipe extends obliquely upward into the accommodating space.

[0012] Preferably, a crushing valve is provided at the bottom of the tower body, the tower body is connected to the silo pump through the crushing valve, and a feed valve is provided between the crushing valve and the silo pump.

[0013] Compared with existing technologies, this solution has the following advantages: In this case, the drying tower is equipped with a deblocking pipe and a third air inlet pipe on the discharge pipe of the silo pump. The third air inlet pipe is located between the deblocking pipe and the second valve. After the silo pump has finished conveying the material or the discharge pipe is blocked, the first valve and the second valve are closed, the deblocking valve is opened, and compressed air is introduced into the third air inlet pipe. By backflushing, the material in the discharge pipe enters the tower body through the deblocking pipe, thereby avoiding blockage of the discharge pipe.

[0014] Secondly, the tower body is equipped with a protective cover to prevent the dried powder from entering the drain pipe and clogging it when the tower body is drying the material. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the rotary atomizing drying tower of Example 1; Figure 2 As in Example 1 Figure 1 Enlarged view of A in the middle; Figure 3 This is a schematic diagram of the structure of the rotary atomizing drying tower in Example 2; Figure 4 This is a schematic diagram of the rotating atomizing drying tower in Example 3.

[0016] The components include: tower body 1; silo pump 2; protective cover 3; second baffle plate 4; crushing valve 5; feed valve 6; rotary atomizer 11; first air inlet pipe 12; flue gas distributor 13; air outlet pipe 14; second air inlet pipe 21; discharge pipe 22; third air inlet pipe 23; blockage removal pipe 24; discharge port 31; first baffle plate 32; guide surface 33; first inclined section 41; second inclined section 42; liquid inlet pipe 111; second flow meter 112; first flow meter 121; third valve 122; first valve 221; second valve 222; fourth valve 231; and blockage removal valve 241. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of this application implemented as described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0018] Example 1 refer to Figure 1-2A high-efficiency, anti-clogging rotary atomizing drying tower includes a tower body 1 and a chamber pump 2. The top of the tower body 1 is equipped with a rotary atomizer 11 and a first air inlet pipe 12. The rotary atomizer 11 atomizes externally input materials. The first air inlet pipe 12 supplies hot air to the tower body 1. The bottom of the tower body 1 is connected to the top of the chamber pump 2. The bottom of the chamber pump 2 is equipped with a second air inlet pipe 21 and a discharge pipe 22. The second air inlet pipe 21 supplies compressed air to the chamber pump 2, and the discharge pipe 22 discharges the dried material. The discharge pipe 22 is equipped with a first valve 22. 1. The first valve 221 and the second valve 222 are provided. The discharge pipe 22 is provided with a third air inlet pipe 23. The third air inlet pipe 23 is located between the first valve 221 and the second valve 222. The third air inlet pipe 23 is used to provide compressed air to the discharge pipe 22. The discharge pipe 22 is provided with a plug-out pipe 24. The plug-out pipe 24 is provided with a plug-out valve 241. The two ends of the plug-out pipe 24 are respectively connected to the discharge pipe 22 and the tower body 1. The plug-out pipe 24 is located between the first valve 221 and the third air inlet pipe 23. The tower body 1 is provided with a protective cover 3. The protective cover 3 is used to prevent material from entering the plug-out pipe 24.

[0019] In this embodiment, the first air inlet pipe 12 is connected to an external air preheater. The first air inlet pipe 12 is used to draw part of the hot flue gas from the external air preheater into the tower body 1. The material is desulfurization wastewater.

[0020] The rotary atomizer 11 is existing technology, and its working principle is as follows: the core driving force of the rotary atomizer 11 is centrifugal force. When the liquid is delivered to the center of the high-speed rotating disc, under the action of centrifugal force, the liquid is thrown out along the tangential direction of the disc, forming a liquid film or liquid filament. As the rotation speed increases, the liquid film will be further stretched and thinned, and eventually break into tiny droplets due to surface tension and air turbulence.

[0021] The first valve 221 is a pneumatic valve, and the second valve 222 is a gate valve.

[0022] The specific process of drying and conveying in the drying tower is as follows: external desulfurization wastewater is conveyed to the rotary atomizer 11, the rotary atomizer 11 atomizes the desulfurization wastewater and sends it into the tower body 1, the first air inlet pipe 12 draws part of the hot flue gas from the external air preheater into the tower body 1, the hot flue gas mixes and contacts with the atomized desulfurization wastewater, evaporates the water in the desulfurization wastewater, thereby causing the desulfurization wastewater to precipitate salt materials, the salt materials are then conveyed to the silo pump 2, the first valve 221 and the second valve 222 are opened, the external air supply equipment delivers compressed air to the second air inlet pipe 21, the second air inlet pipe 21 delivers compressed air to the silo pump 2, so that the salt materials in the silo pump 2 are conveyed to the discharge pipe 22, and then conveyed to the next process.

[0023] During the drying process, a protective cover 3 is provided at the connection between the drain pipe 24 and the tower body 1 to prevent the precipitated salt material from entering the drain pipe 24 from the connection between the drain pipe 24 and the tower body 1, thus avoiding blockage of the drain pipe 24.

[0024] The specific method for unblocking the unblocking pipe 24 is as follows: close the first valve 221 and the second valve 222, open the unblocking valve 241, and the external air supply equipment delivers compressed air to the third air inlet pipe 23. The compressed air enters the discharge pipe 22 from the third air inlet pipe 23, and then enters the unblocking pipe 24 from the discharge pipe 22. By backflushing, the clumps of salt material in the pipe are transported back to the tower body 1 from the unblocking pipe 24, and then the salt material is transported again. In this way, the blockage of the discharge pipe 22 can be avoided.

[0025] Preferably, the bottom of the protective cover 3 is provided with a discharge port 31, and a plurality of first baffles 32 are provided inside the protective cover 3. The plurality of first baffles 32 are connected obliquely downward inside the protective cover 3. The plurality of first baffles 32 are arranged at intervals from top to bottom inside the protective cover 3. The plurality of first baffles 32 form a serpentine material conveying channel. The connection end of the blockage discharge pipe 24 and the tower body 1 is located inside the protective cover 3 and above the first baffles 32.

[0026] In this embodiment, multiple first baffle plates 32 are arranged at intervals from top to bottom inside the protective cover 3, and the first baffle plates 32 are arranged obliquely downwards. When the drying tower is drying, the precipitated salt material may enter the protective cover 3 from the discharge port 31. At this time, after the salt material enters the discharge port 31, it will be blocked by multiple first baffle plates 32. In addition, due to the oblique downward arrangement of the first baffle plates 32, when it is blocked by the lowest first baffle plate 32, it will fall back into the tower body 1 due to gravity. When it is blocked by the upper first baffle plate 32, it will fall onto the lower first baffle plate 32 due to gravity, and then continue to move downwards along the oblique surface of the first baffle plate 32, thus falling into the tower body 1.

[0027] Secondly, when the drain pipe 24 transports the agglomerated salt material back to the tower body 1, the agglomerated salt material can enter the tower body 1 along the serpentine conveying channel, which can both meet the material input requirements of the drain pipe 24 and prevent the material in the tower body 1 from entering the drain pipe 24.

[0028] Preferably, the top of the protective cover 3 is provided with a material guiding surface 33, which is arranged obliquely downward on the top of the protective cover 3.

[0029] In this embodiment, by providing a guide surface 33 to the protective cover 3, when the drying tower is drying, the precipitated salt material can slide down to the bottom of the tower body 1 along the guide surface 33 when it falls to the top of the protective cover 3.

[0030] Preferably, the top of the tower body 1 is provided with a flue gas distributor 13, the first air inlet pipe 12 is connected to the tower body 1 through the flue gas distributor 13, the first air inlet pipe 12 is provided with a first flow meter 121, the rotary atomizer 11 is provided with a liquid inlet pipe 111, and the liquid inlet pipe 111 is provided with a second flow meter 112.

[0031] In this embodiment, both the first flow meter 121 and the second flow meter 112 are electromagnetic flow meters. The first flow meter 121 is used to detect the flow rate of the desulfurization wastewater transported in the inlet pipe 111, and the second flow meter 112 is used to detect the flow rate of hot flue gas in the first inlet pipe 12. Furthermore, by setting up the flue gas distributor 13, the atomized desulfurization wastewater and hot flue gas are mixed more thoroughly and evenly, which is beneficial for achieving stable operation over a long period and ensuring that the outlet gas temperature is close to the required temperature.

[0032] Preferably, the first air inlet pipe 12 and the liquid inlet pipe 111 are each provided with a third valve 122, and the second air inlet pipe 21 and the third air inlet pipe 23 are each provided with a fourth valve 231.

[0033] The third valve 122 of the liquid inlet pipe 111 is a V-shaped ceramic-lined wear-resistant ball valve, which can regulate the flow rate of desulfurization wastewater. The third valve 122 of the first air inlet pipe 12 is an electric slide gate type isolation valve, which can regulate the flow rate of hot flue gas. The flow rate of desulfurization wastewater and the flow rate of hot flue gas are detected by the first flow meter 121 and the second flow meter 112, respectively. The flow rate of desulfurization wastewater and the flow rate of hot flue gas are then regulated by the third valves 122 on both the first air inlet pipe 12 and the liquid inlet pipe 111, thereby allowing the atomized desulfurization wastewater to mix with an appropriate amount of hot flue gas.

[0034] The fourth valve 231 is a pneumatic valve used to open or close the second air inlet pipe 21 and the third air inlet pipe 23.

[0035] Preferably, the tower body 1 is provided with an outlet pipe 14, which is used to output the gas inside the tower body 1.

[0036] In this embodiment, the hot flue gas is mixed with the evaporated water vapor and output to the outlet of the external air preheater through the exhaust pipe 14.

[0037] In this embodiment, a control system is also included. The control system may be a PLC control system well known to those skilled in the art. The PLC control system is electrically connected to the rotary atomizer, pump, valve and flow meter mentioned above, including but not limited to the linkage between valves, the linkage between flow meter and valve, and the start and stop of the rotary atomizer.

[0038] Example 2 refer to Figure 3This embodiment is basically the same as embodiment 1, except that: a second baffle plate 4 is provided inside the tower body 1. The second baffle plate 4 includes a first inclined section 41 and a second inclined section 42. The first inclined section 41 is arranged obliquely downward in the direction toward the center of the tower body 1. One end of the first inclined section 41 is connected to the inner wall of the tower body 1, and the other end is connected to the end of the second inclined section 42. The second inclined section 42 is arranged obliquely downward in the direction away from the center of the tower body 1. The first inclined section 41 and the second inclined section 42 form a receiving space, and the end of the air outlet pipe 14 extends obliquely upward into the receiving space.

[0039] In this embodiment, since the gas outlet pipe 14 is below the outlet of the blockage discharge pipe 24, a second baffle plate 4 is provided inside the tower body 1. When the blockage discharge pipe 24 discharges clumps of salt material into the tower body 1 or dries desulfurization wastewater in the tower body 1, the salt material will fall down along the surface of the first inclined section 41 to the bottom of the tower body 1, thus preventing the salt material from remaining on the second baffle plate 4.

[0040] Secondly, the downward-sloping arrangement of the second inclined section 42, combined with the upward-sloping extension of the vent pipe 14 into the containment space, allows the second inclined section 42 and the upward-sloping vent pipe 14 to prevent salt from entering the vent pipe 14 from the pipe opening when a small amount of salt drifts into the containment space.

[0041] Example 3 refer to Figure 4 This embodiment is basically the same as embodiment 1, except that: the bottom of the tower body 1 is provided with a crushing valve 5, the tower body 1 is connected to the silo pump 2 through the crushing valve 5, and a feed valve 6 is provided between the crushing valve and the silo pump 2.

[0042] In this embodiment, the crushing valve 5 includes a housing, a pair of crushing rollers, and a motor. The pair of crushing rollers are rotatably connected inside the housing. The motor drives the pair of crushing rollers to rotate in opposite directions via gears, thereby crushing the salt material. The feed valve 6 is a ball-shaped feed valve.

[0043] The salt material precipitated inside tower 1 is conveyed from the bottom of tower 1 to crushing valve 5. Crushing valve 5 crushes the salt material by squeezing it. Feed valve 6 opens, and the crushed salt material is conveyed to silo pump 2. The crushing valve 5 can not only crush the freshly dried and precipitated salt material, but also crush the clumps of salt material output from drain pipe 24, thereby reducing the risk of blockage in discharge pipe 22.

[0044] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. A high-efficiency anti-clogging rotary atomizing drying tower, characterized in that, The system includes a tower body and a silo pump. The top of the tower body is equipped with a rotary atomizer and a first air inlet pipe. The rotary atomizer atomizes externally input materials. The first air inlet pipe provides hot air to the tower body. The bottom of the tower body is connected to the top of the silo pump. The bottom of the silo pump is equipped with a second air inlet pipe and a discharge pipe. The second air inlet pipe provides compressed air to the silo pump. The discharge pipe discharges dried materials. The discharge pipe has a first valve and a second valve. The discharge pipe also has a third air inlet pipe located between the first and second valves, providing compressed air to the discharge pipe. The discharge pipe has a drain pipe with a drain valve. Both ends of the drain pipe are connected to the discharge pipe and the tower body, respectively. The drain pipe is located between the first valve and the third air inlet pipe. The tower body is equipped with a protective cover to prevent materials from entering the drain pipe.

2. The high-efficiency anti-clogging rotary atomizing drying tower according to claim 1, characterized in that, The bottom of the protective cover is provided with a discharge port. The protective cover is provided with a plurality of first baffles. The plurality of first baffles are connected obliquely downward inside the protective cover. The plurality of first baffles are arranged at intervals from top to bottom inside the protective cover. The plurality of first baffles form a serpentine material conveying channel. The connection end of the blockage discharge pipe to the tower body is located inside the protective cover and above the first baffles.

3. The high-efficiency anti-clogging rotary atomizing drying tower according to claim 2, characterized in that, The top of the protective cover is provided with a material guiding surface, which is arranged obliquely downward on the top of the protective cover.

4. The high-efficiency anti-clogging rotary atomizing drying tower according to claim 1, characterized in that, The top of the tower body is provided with a flue gas distributor. The first air inlet pipe is connected to the tower body through the flue gas distributor. The first air inlet pipe is provided with a first flow meter. The rotary atomizer is provided with a liquid inlet pipe. The liquid inlet pipe is provided with a second flow meter.

5. The high-efficiency anti-clogging rotary atomizing drying tower according to claim 4, characterized in that, Both the first air inlet pipe and the liquid inlet pipe are equipped with a third valve, and both the second air inlet pipe and the third air inlet pipe are equipped with a fourth valve.

6. The high-efficiency anti-clogging rotary atomizing drying tower according to claim 1, characterized in that, The tower body is equipped with a gas outlet pipe, which is used to output the gas inside the tower body.

7. The high-efficiency anti-clogging rotary atomizing drying tower according to claim 6, characterized in that, The tower body is provided with a second baffle plate, which includes a first inclined section and a second inclined section. The first inclined section is arranged obliquely downward in the direction toward the center of the tower body. One end of the first inclined section is connected to the inner wall of the tower body, and the other end is connected to the end of the second inclined section. The second inclined section is arranged obliquely downward in the direction away from the center of the tower body. The first inclined section and the second inclined section form a receiving space, and the end of the air outlet pipe extends obliquely upward into the receiving space.

8. The high-efficiency anti-clogging rotary atomizing drying tower according to claim 1, characterized in that, The bottom of the tower body is equipped with a crushing valve, and the tower body is connected to the silo pump through the crushing valve. A feed valve is provided between the crushing valve and the silo pump.

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