A kind of air-cooled high-speed magnetic suspension rotary spray drying tower system of desulfurization wastewater zero discharge

Abstract

This utility model provides a wind-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater, relating to the technical field of desulfurization wastewater equipment. It includes a boiler-side high-temperature main gas source, with a first bypass inlet flue and a second bypass inlet flue installed at one end. By setting up the boiler-side high-temperature main gas source and the second bypass inlet flue, the external control panel can be opened for unified control of the entire electrical equipment during actual use, significantly extending the system's service life. Due to the use of magnetic levitation and wind-cooling technology, noise and vibration are eliminated. Vibration and noise are inherent drawbacks of conventional motors, which cannot be eliminated. The magnetic levitation motor effectively solves this problem. Currently, the market uses ordinary water-cooled rotary atomizers, which are mostly imported products, resulting in high equipment costs and long after-sales service response times. This solution can completely replace imported products and significantly improve their overall performance.

Description

Technical Field

[0001] This utility model relates to the technical field of desulfurization wastewater equipment, and in particular to a wind-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater. Background Technology

[0002] Rotary atomization desulfurization wastewater treatment technology is a new environmental protection technology that is emerging and developing rapidly in China. Its system consists of a flue system, an atomization system, and a drying and evaporation system. Among these, rotary atomization is both the core of the system and the technology itself.

[0003] Working principle of rotary atomizer for desulfurization wastewater: Rotary atomization evaporation technology utilizes the centrifugal force generated by a high-speed rotating atomizing disc to stretch desulfurization wastewater into a thin film or draw it into filaments. These filaments then break at the edge of the atomizing disc, forming small droplets that are sprayed into a drying tower for drying. The core equipment of this technology is the rotary atomizer, whose primary function is to atomize the desulfurization wastewater into small droplets with a diameter of 10–60 μm under the centrifugal force of the atomizing disc. After atomization, the droplets come into contact with the dispersed hot flue gas, and the moisture evaporates rapidly, while the salts in the wastewater form a powdery dried product. During the atomization process, it is necessary to control the wastewater flow rate, droplet size, air preheater outlet flue gas temperature, and flue gas distribution to avoid "wall adhesion," which can lead to corrosion or scaling. Generally, projects require determining the atomized droplet size based on an evaporation model, further calculating the atomizer rotation speed and atomizing disc specifications, and selecting the optimal high-speed rotary atomizer. Since wastewater treatment typically involves a wide range of fluctuations, with droplet sizes reaching up to 30 micrometers, the system must possess basic performance characteristics such as high efficiency, energy saving, safety, and reliability.

[0004] The rotary atomizer is the core system of the flash drying desulfurization wastewater treatment system. Currently, traditional rotary atomizers on the market are all driven by ordinary water-cooled motors to rotate the atomizing disc at high speed. In this process, traditional motors have many drawbacks, such as relatively low rotation speed, high energy consumption, large vibration, slow control response, rapid wear and short service life, and high cost.

[0005] Traditional zero-discharge rotary atomizers for desulfurization wastewater mainly consist of a conventional high-speed rotary motor, a cooling water system, and an atomizer chassis. They are complex in structure, difficult to maintain, energy-intensive, and expensive.

[0006] Therefore, this utility model provides a wind-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a wind-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater.

[0008] To achieve the above objectives, this utility model adopts the following technical solution: a wind-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater, including a high-temperature main gas source on the boiler side.

[0009] The boiler side high-temperature main gas source is equipped with a first bypass flue and a second bypass flue at one end. The first bypass flue and the second bypass flue are symmetrically distributed. A first flue gas outlet is installed at one end of the first bypass flue. A first boiler air preheater is installed on the outside of the first bypass flue. A second flue gas outlet is installed at one end of the second bypass flue. A second boiler air preheater is installed on the outside of the second bypass flue. The second boiler air preheater and the first boiler air preheater are symmetrically distributed.

[0010] A drying tower is installed between the first boiler air preheater and the second boiler air preheater, and a third conveying pipe is installed between the first bypass flue and the second bypass flue and on the side away from the drying tower.

[0011] The drying tower houses an air-cooled high-speed magnetic levitation rotary atomizer, which in turn houses an air-cooled rotary atomizer magnetic levitation motor. An atomizer nozzle is mounted at the bottom of the air-cooled high-speed magnetic levitation rotary atomizer. The air-cooled high-speed magnetic levitation rotary atomizer also houses a magnetic levitation cold air circulation system, which includes an end-sealed cooling fan. The air-cooled rotary atomizer magnetic levitation motor houses a magnetic levitation motor stator, and the stator houses a magnetic levitation motor rotor. A radial magnetic levitation control bearing is mounted at the top of the magnetic levitation motor rotor, and an end-sealed cooling fan extending to the outside of the air-cooled high-speed magnetic levitation rotary atomizer is mounted at the top of the radial magnetic levitation control bearing. An axial magnetic levitation control bearing is mounted at the bottom of the magnetic levitation motor rotor, and the bottom of the axial magnetic levitation control bearing is connected to the atomizer nozzle. When the air-cooled rotary atomizer magnetic levitation motor operates, the magnetic levitation motor rotor is subjected to the magnetic field of the magnetic levitation motor stator and begins to rotate.

[0012] In a preferred embodiment, a third expansion joint is installed on the outer side of the first bypass inlet flue and near the first flue gas outlet, and a first expansion joint is installed on the outer side of the boiler-side high-temperature main gas source. The first expansion joint is used to control the opening and closing of the boiler-side high-temperature main gas source and simultaneously regulate the flow rate. The third expansion joint is used to control the opening and closing of the first flue gas outlet and simultaneously regulate the flow rate during transportation. A fifth expansion joint is installed on the outer side of the second bypass inlet flue and near the second flue gas outlet. The fifth expansion joint is used to control the opening and closing of the second flue gas outlet and simultaneously regulate the flow rate during transportation.

[0013] In a preferred embodiment, an electrically adjustable inlet damper is installed on one side of the drying tower. A first electrically adjustable inlet isolation door is installed between the electrically adjustable inlet damper and the first bypass inlet flue. A second electrically adjustable inlet isolation door is installed between the electrically adjustable inlet damper and the second bypass inlet flue. A fourth expansion joint is installed on the side of the second electrically adjustable inlet isolation door near the second bypass inlet flue, and a second expansion joint is installed on the side of the first electrically adjustable inlet isolation door near the first bypass inlet flue. The second expansion joint controls the opening and closing of the first electrically adjustable inlet isolation door, and the fourth expansion joint controls the opening and closing of the second electrically adjustable inlet isolation door. A first conveying pipe is installed on one side of the air-cooled high-speed magnetic levitation rotary atomizer, and a desulfurization wastewater concentrate storage tank is installed on the other side of the first conveying pipe. The first conveying pipe connects the air-cooled high-speed magnetic levitation rotary atomizer and the desulfurization wastewater concentrate storage tank for subsequent normal conveying.

[0014] In a preferred embodiment, a first outlet electric isolation door and a second outlet electric isolation door are installed on the outer side of the third conveying pipe. The first outlet electric isolation door is located on the side near the first flue gas outlet, and the second outlet electric isolation door is located on the side near the second flue gas outlet. A second conveying pipe is installed on the other side of the air-cooled high-speed magnetic levitation rotary atomizer. A system induced draft fan is installed on the other side of the second conveying pipe. A fourth conveying pipe is installed on one side of the system induced draft fan. One end of the fourth conveying pipe is connected to the third conveying pipe. The second conveying pipe is used to connect the drying tower and the system induced draft fan to facilitate subsequent normal conveying.

[0015] In a preferred embodiment, a control panel is installed on the outside of the drying tower. The first expansion joint, the first boiler air preheater, the second expansion joint, the first inlet electric isolation door, the first outlet electric isolation door, the third expansion joint, the second boiler air preheater, the fourth expansion joint, the second inlet electric isolation door, the second outlet electric isolation door, the fifth expansion joint, the system induced draft fan, the air-cooled high-speed magnetic levitation rotary atomizer, the air-cooled rotary atomizer magnetic levitation motor, the atomizer nozzle, and the end-sealed cooling fan are all electrically connected to the control panel. The control panel is used to control the operation of the first expansion joint, the first boiler air preheater, the second expansion joint, the first inlet electric isolation door, the first outlet electric isolation door, the third expansion joint, the second boiler air preheater, the fourth expansion joint, the second inlet electric isolation door, the second outlet electric isolation door, the fifth expansion joint, the system induced draft fan, the air-cooled high-speed magnetic levitation rotary atomizer, the air-cooled rotary atomizer magnetic levitation motor, the atomizer nozzle, and the end-sealed cooling fan, thereby realizing unified management of the electrical equipment.

[0016] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0017] By setting up a high-temperature main gas source on the boiler side, a first bypass flue gas duct, and a second bypass flue gas duct, and opening the external control panel during actual use, the entire electrical equipment can be uniformly controlled. Magnetic force is used to achieve contactless operation between the magnetic levitation motor rotor and stator, thereby reducing friction and energy consumption. The air-cooled rotary atomizer magnetic levitation motor mainly consists of a suspension part and a magnetic levitation motor rotor. The suspension part includes permanent magnets and electromagnets, which respectively generate static and changing magnetic fields. Their interaction produces magnetic force, allowing the magnetic levitation motor rotor to levitate in relative space. During operation, the current in the electromagnet continuously changes, thus triggering dynamic adjustments to the magnetic field. Since the rate of change of current is proportional to the rate of change of magnetic field, an induced electromotive force is generated. This induced electromotive force acts on the rotor, causing current to be generated and forming a complete electromagnetic induction circuit. Because it uses an air-cooled magnetic levitation motor, the complex water cooling system is eliminated, resulting in lower energy consumption. The overall structure is extremely simple due to the air-cooled magnetic levitation motor. More importantly, it avoids the safety hazards associated with complex water cooling systems, simplifies maintenance, and significantly extends the system's lifespan. The magnetic levitation and air-cooling technologies eliminate noise and vibration, which are inherent weaknesses of conventional motors. The magnetic levitation motor effectively solves this problem. Currently, the market uses ordinary water-cooled rotary atomizers, which are mostly imported products, resulting in high equipment costs and long after-sales service response times. This solution can completely replace imported products and significantly improve their overall performance. Attached Figure Description

[0018] Figure 1 A schematic diagram of the main structure of the air-cooled high-speed magnetic levitation rotary atomizer of a desulfurization wastewater zero-discharge air-cooled high-speed magnetic levitation rotary spray drying tower system provided by this utility model.

[0019] Figure 2 An enlarged structural schematic diagram of the high-speed magnetic levitation rotary atomizer in a wind-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater provided by this utility model.

[0020] Figure 3 This invention provides a schematic diagram of the internal structure of the magnetic levitation motor of the air-cooled rotary atomizer in a zero-discharge air-cooled high-speed magnetic levitation rotary spray drying tower system for desulfurization wastewater.

[0021] Legend:

[0022] 1. High-temperature main gas source on the boiler side; 11. First expansion joint; 12. Desulfurization wastewater concentrate storage tank; 13. First conveying pipeline;

[0023] 2. First bypass inlet flue; 21. First boiler air preheater; 22. Second expansion joint; 23. First inlet electric isolation door; 24. First outlet electric isolation door; 25. Inlet electric regulating damper; 26. Third expansion joint; 27. First flue gas outlet;

[0024] 3. Second bypass flue gas inlet; 31. Second boiler air preheater; 32. Fourth expansion joint; 33. Second inlet electric isolation door; 34. Second outlet electric isolation door; 35. Second conveying pipeline; 36. Fifth expansion joint; 37. Second flue gas outlet; 38. System induced draft fan; 39. Third conveying pipeline;

[0025] 4. Drying tower;

[0026] 5. Air-cooled high-speed magnetic levitation rotary atomizer; 51. Air-cooled rotary atomizer magnetic levitation motor; 52. Atomizer nozzle; 53. End-sealed cooling fan; 54. Magnetic levitation cold air circulation system; 55. Radial magnetic levitation control bearing; 56. Magnetic levitation motor rotor; 57. Magnetic levitation motor stator; 58. Axial magnetic levitation control bearing. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] like Figures 1-3 As shown, this embodiment provides a technical solution: a wind-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater, including a boiler-side high-temperature main gas source 1, a first bypass inlet flue 2 and a second bypass inlet flue 3 installed at one end of the boiler-side high-temperature main gas source 1, the first bypass inlet flue 2 and the second bypass inlet flue 3 being symmetrically distributed, a first flue gas outlet 27 installed at one end of the first bypass inlet flue 2, a first boiler air preheater 21 installed on the outside of the first bypass inlet flue 2, a second flue gas outlet 37 installed at one end of the second bypass inlet flue 3, a second boiler air preheater 31 installed on the outside of the second bypass inlet flue 3, the second boiler air preheater 31 and the first boiler air preheater 21 being symmetrically distributed;

[0029] In this scheme, a drying tower 4 is installed between the first boiler air preheater 21 and the second boiler air preheater 31, and a third conveying pipe 39 is installed between the first bypass air inlet flue 2 and the second bypass air inlet flue 3 and on the side away from the drying tower 4.

[0030] In this design, a high-speed, air-cooled magnetic levitation rotary atomizer 5 is installed inside the drying tower 4. A magnetic levitation motor 51 is installed inside the air-cooled high-speed magnetic levitation rotary atomizer 5. An atomizer nozzle 52 is installed at the bottom of the air-cooled high-speed magnetic levitation rotary atomizer 5. A magnetic levitation cold air circulation system 54 is installed inside the air-cooled high-speed magnetic levitation rotary atomizer 5. The magnetic levitation cold air circulation system 54 includes an end-sealed cooling fan 53. A magnetic levitation motor stator 57 is installed inside the air-cooled rotary atomizer magnetic levitation motor 51. The device contains a magnetic levitation motor rotor 56. A radial magnetic levitation control bearing 55 is installed at the top end of the magnetic levitation motor rotor 56. An end-sealed cooling fan 53 extending to the outside of the air-cooled high-speed magnetic levitation rotary atomizer 5 is installed at the top of the radial magnetic levitation control bearing 55. An axial magnetic levitation control bearing 58 is installed at the bottom end of the magnetic levitation motor rotor 56. The bottom of the axial magnetic levitation control bearing 58 is connected to the atomizer nozzle 52. When the air-cooled rotary atomizer magnetic levitation motor 51 is running, the magnetic levitation motor rotor 56 will be affected by the magnetic field of the magnetic levitation motor stator 57 and will begin to rotate.

[0031] Going a step further, such as Figure 1 As shown: In this scheme, a third expansion joint 26 is installed on the outer side of the first bypass intake flue 2 and on the side close to the first flue gas outlet 27, and a first expansion joint 11 is installed on the outer side of the boiler-side high-temperature main gas source 1. The first expansion joint 11 is used to control the opening and closing of the boiler-side high-temperature main gas source 1 and simultaneously achieve the purpose of regulating the flow rate. The third expansion joint 26 is used to control the opening and closing of the first flue gas outlet 27 and simultaneously achieve the purpose of regulating the flow rate during transportation.

[0032] In this scheme, a fifth expansion joint 36 is installed on the outer side of the second bypass intake flue 3 and on the side close to the second flue gas outlet 37. The fifth expansion joint 36 is used to control the opening and closing of the second flue gas outlet 37 and to regulate the flow rate during transportation.

[0033] Going a step further, such as Figures 1-3 As shown: In this scheme, an inlet electrically adjustable damper 25 is installed on one side of the drying tower 4. A first inlet electrically adjustable damper 23 is installed between the inlet electrically adjustable damper 25 and the first bypass air intake duct 2. A second inlet electrically adjustable damper 33 is installed between the inlet electrically adjustable damper 25 and the second bypass air intake duct 3. A fourth expansion joint 32 is installed on the side of the second inlet electrically adjustable damper 33 near the second bypass air intake duct 3. A second expansion joint 22 is installed on the side of the first inlet electrically adjustable damper 23 near the first bypass air intake duct 2. The second expansion joint 22 is used to control the opening and closing of the first inlet electrically adjustable damper 23, and the fourth expansion joint 32 is used to control the opening and closing of the second inlet electrically adjustable damper 33.

[0034] In this scheme, a first outlet electric isolation door 24 and a second outlet electric isolation door 34 are installed on the outside of the third conveying pipe 39. The first outlet electric isolation door 24 is located on the side near the first flue gas outlet 27, and the second outlet electric isolation door 34 is located on the side near the second flue gas outlet 37. A second conveying pipe 35 is installed on the other side of the air-cooled high-speed magnetic levitation rotary atomizer 5. A system induced draft fan 38 is installed on the other side of the second conveying pipe 35. A fourth conveying pipe is installed on one side of the system induced draft fan 38. One end of the fourth conveying pipe is connected to the third conveying pipe 39. The second conveying pipe 35 is used to connect the drying tower 4 and the system induced draft fan 38 to facilitate subsequent normal conveying.

[0035] In this design, a control panel is installed on the outside of the drying tower 4. The first expansion joint 11, the first boiler air preheater 21, the second expansion joint 22, the first inlet electric isolation door 23, the first outlet electric isolation door 24, the third expansion joint 26, the second boiler air preheater 31, the fourth expansion joint 32, the second inlet electric isolation door 33, the second outlet electric isolation door 34, the fifth expansion joint 36, the system induced draft fan 38, the air-cooled high-speed magnetic levitation rotary atomizer 5, the air-cooled rotary atomizer magnetic levitation motor 51, the atomizer nozzle 52, and the end-sealed cooling fan 53 are all electrically connected to the control panel. The control panel is connected to control the operation of the first expansion joint 11, the first boiler air preheater 21, the second expansion joint 22, the first inlet electric isolation door 23, the first outlet electric isolation door 24, the third expansion joint 26, the second boiler air preheater 31, the fourth expansion joint 32, the second inlet electric isolation door 33, the second outlet electric isolation door 34, the fifth expansion joint 36, the system induced draft fan 38, the air-cooled high-speed magnetic levitation rotary atomizer 5, the air-cooled rotary atomizer magnetic levitation motor 51, the atomizer nozzle 52, and the end-sealed cooling fan 53, realizing unified management of electrical equipment.

[0036] Going a step further, such as Figure 1 As shown, in this scheme, a first conveying pipe 13 is installed on one side of the air-cooled high-speed magnetic levitation rotary atomizer 5, and a desulfurization wastewater concentrate storage tank 12 is installed on the other side of the first conveying pipe 13. The first conveying pipe 13 is used to connect the air-cooled high-speed magnetic levitation rotary atomizer 5 and the desulfurization wastewater concentrate storage tank 12 to facilitate subsequent normal conveying.

[0037] Working principle:

[0038] like Figures 1-3 As shown:

[0039] By setting up a high-temperature main gas source 1, a first bypass flue gas duct 2, and a second bypass flue gas duct 3 on the boiler side, the external control panel can be opened during actual use to uniformly control the entire power equipment.

[0040] The magnetic levitation motor rotor 56 and stator 57 of the magnetic levitation motor are operated without contact using magnetic force, thereby reducing friction and energy consumption. The air-cooled rotary atomizer magnetic levitation motor 51 is mainly composed of a suspension part and a magnetic levitation motor rotor 56. The suspension part includes permanent magnets and electromagnets, which generate static and changing magnetic fields respectively. After interacting, they generate magnetic force, which allows the magnetic levitation motor rotor 56 to be suspended in the air. During operation, the current in the electromagnet changes continuously, which in turn causes the magnetic field to be dynamically adjusted. Since the rate of change of current is proportional to the rate of change of magnetic field, an induced electromotive force is generated. This induced electromotive force acts on the rotor part, causing the current to be generated therein, thus forming a complete electromagnetic induction circuit.

[0041] The desulfurization wastewater to be treated is transported from the desulfurization wastewater storage tank 12 through pipelines to the rotary atomizer driven by the air-cooled high-speed magnetic levitation motor 51 in the drying tower 4. After the atomizer rotates at high speed, fine mist particles are formed and sprayed out from the atomizer nozzle. At the same time, high-temperature flue gas is taken out from the inlet side of the first boiler air preheater 21 and the second boiler air preheater 31 respectively, and enters the drying tower 4 through the high-temperature flue system. A high-temperature field is formed in the drying tower 4, surrounding the water mist sprayed by the atomizer. The atomized desulfurization wastewater particles evaporate rapidly under the high-temperature field. At this time, the desulfurization wastewater forms high-temperature flue gas and some crystalline particles under the high-temperature gasification. The high-temperature flue gas after wastewater treatment is drawn out by the induced draft fan after the drying tower 4 and sent to the side of the first boiler air preheater 21 and the second boiler air preheater 31 respectively, that is, returned to the original main flue gas system. The solid particles remaining in the drying tower 4 settle down and are discharged at the bottom of the drying tower 4 through the ash conveying system. This completes a complete desulfurization wastewater drying and evaporation process.

[0042] This solution replaces the motor of the traditional atomizer with a water-cooled high-speed magnetic levitation motor, which has the following advantages:

[0043] 1. The use of a high-speed magnetic levitation motor eliminates the mutual friction between systems, and its operating speed can reach 4 to 5 times that of ordinary motors; moreover, it has extremely high energy efficiency, with the efficiency of traditional motors being about 85%, while the efficiency of magnetic levitation motors can reach 99.9%, resulting in significant energy-saving effects;

[0044] 2. Due to the adoption of an air-cooled magnetic levitation motor, the complex water cooling system has been eliminated, resulting in lower energy consumption;

[0045] 3. Due to the adoption of an air-cooled magnetic levitation motor, the overall structure is extremely simple; more importantly, it avoids the safety hazards caused by complex water cooling systems, makes maintenance easier, and greatly extends the system's service life.

[0046] 4. Due to the adoption of magnetic levitation technology, the contact friction between high-speed rotating mechanisms is eliminated, and the service life of the equipment is greatly extended. The service life of ordinary motors is about 3 years, while the magnetic levitation motor used in this solution can reach a service life of 20 years. Currently, imported atomizers are commonly used in the market, and their cost is basically 1 million RMB per unit. Calculated based on a 15-year service life per set, a single set of equipment can save more than 4 million RMB in procurement costs over a 15-year operating cycle.

[0047] 5. Due to the use of magnetic levitation and air-cooling technology, noise and vibration are eliminated. Vibration and noise are shortcomings that cannot be eliminated by conventional motors, and magnetic levitation motors effectively solve this problem.

[0048] 6. Due to the adoption of magnetic levitation and air-cooling technologies, the control response time of the equipment has been greatly shortened;

[0049] 7. Currently, the market mainly uses ordinary water-cooled rotary atomizers, which are mostly imported products. These devices are expensive and have long after-sales service response times. This solution can completely replace imported products and significantly improve their overall performance.

[0050] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A zero-discharge air-cooled high-speed magnetic levitation rotary spray dryer system for desulfurization wastewater, comprising a boiler-side high-temperature main air source (1), characterized in that, The boiler-side high-temperature main gas source (1) is equipped with a first bypass flue (2) and a second bypass flue (3) at one end. The first bypass flue (2) is equipped with a first flue gas outlet (27) at one end. The first boiler air preheater (21) is installed on the outside of the first bypass flue (2). The second bypass flue (3) is equipped with a second flue gas outlet (37) at one end. The second boiler air preheater (31) is installed on the outside of the second bypass flue (3). A drying tower (4) is installed between the first boiler air preheater (21) and the second boiler air preheater (31); The drying tower (4) is equipped with an air-cooled high-speed magnetic levitation rotary atomizer (5), which is equipped with an air-cooled rotary atomizer magnetic levitation motor (51). The bottom of the air-cooled high-speed magnetic levitation rotary atomizer (5) is equipped with an atomizer nozzle (52). The air-cooled high-speed magnetic levitation rotary atomizer (5) is equipped with a magnetic levitation cold air circulation system (54). The magnetic levitation cold air circulation system (54) includes an end-sealed cooling fan (53). The air-cooled rotary atomizer magnetic levitation motor (51) is equipped with a magnetic levitation motor stator (57). The magnetic levitation motor stator (57) is equipped with a magnetic levitation motor rotor (56). The top of the magnetic levitation motor rotor (56) is equipped with an end-sealed cooling fan (53) extending to the outside of the air-cooled high-speed magnetic levitation rotary atomizer (5).

2. The air-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater according to claim 1, characterized in that: A third expansion joint (26) is installed on the outer side of the first bypass intake flue (2) and on the side close to the first flue gas outlet (27). A first expansion joint (11) is installed on the outer side of the boiler-side high-temperature main gas source (1). The first expansion joint (11) is used to control the opening and closing of the boiler-side high-temperature main gas source (1) and simultaneously achieve the purpose of regulating the flow rate. The third expansion joint (26) is used to control the opening and closing of the first flue gas outlet (27) and simultaneously achieve the purpose of regulating the flow rate during transportation.

3. The air-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater according to claim 2, characterized in that: A fifth expansion joint (36) is installed on the outer side of the second bypass intake flue (3) and on the side close to the second flue gas outlet (37). The fifth expansion joint (36) is used to control the opening and closing of the second flue gas outlet (37) and to regulate the flow rate during delivery.

4. The air-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater according to claim 3, characterized in that: An electric inlet regulating damper (25) is installed on one side of the drying tower (4). A first electric inlet isolation door (23) is installed between the electric inlet regulating damper (25) and the first bypass air intake flue (2). A second electric inlet isolation door (33) is installed between the electric inlet regulating damper (25) and the second bypass air intake flue (3). A fourth expansion joint (32) is installed on the side of the second electric inlet isolation door (33) near the second bypass air intake flue (3). A second expansion joint (22) is installed on the side of the first electric inlet isolation door (23) near the first bypass air intake flue (2). The second expansion joint (22) is used to control the opening and closing of the first electric inlet isolation door (23), and the fourth expansion joint (32) is used to control the opening and closing of the second electric inlet isolation door (33).

5. The air-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater according to claim 4, characterized in that: A first conveying pipe (13) is installed on one side of the air-cooled high-speed magnetic levitation rotary atomizer (5), and a desulfurization wastewater concentrate storage tank (12) is installed on the other side of the first conveying pipe (13). The first conveying pipe (13) is used to connect the air-cooled high-speed magnetic levitation rotary atomizer (5) and the desulfurization wastewater concentrate storage tank (12) to facilitate subsequent normal conveying.

6. The air-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater according to claim 4, characterized in that: A third conveying pipe (39) is installed between the first bypass inlet flue (2) and the second bypass inlet flue (3) and on the side away from the drying tower (4). A first outlet electric isolation door (24) and a second outlet electric isolation door (34) are installed on the outside of the third conveying pipe (39). The first outlet electric isolation door (24) is located on the side close to the first flue gas outlet (27), and the second outlet electric isolation door (34) is located on the side close to the second flue gas outlet (37). A second conveying pipe (35) is installed on the other side of the air-cooled high-speed magnetic levitation rotary atomizer (5). A system induced draft fan (38) is installed on the other side of the second conveying pipe (35). A fourth conveying pipe is installed on one side of the system induced draft fan (38), and one end of the fourth conveying pipe is connected to the third conveying pipe (39).

7. The air-cooled high-speed magnetic levitation rotary spray drying tower system for zero discharge of desulfurization wastewater according to claim 6, characterized in that: The control panel is installed on the outside of the drying tower (4). The first expansion joint (11), the first boiler air preheater (21), the second expansion joint (22), the first inlet electric isolation door (23), the first outlet electric isolation door (24), the third expansion joint (26), the second boiler air preheater (31), the fourth expansion joint (32), the second inlet electric isolation door (33), the second outlet electric isolation door (34), the fifth expansion joint (36), the system induced draft fan (38), the air-cooled high-speed magnetic levitation rotary atomizer (5), the air-cooled rotary atomizer magnetic levitation motor (51), the atomizer nozzle (52), and the end-sealed cooling fan (53) are all electrically connected to the control panel.

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