Crystallization reactor with high-dispersion cyclone separation function

Abstract

The crystallization reactor is characterized in that a water distributor for distributing water to a reaction zone from bottom to top is fixedly mounted on the inner side of the lower end of a reactor shell, and an annular guide cylinder with an upper opening and a lower opening is fixedly mounted in the reaction zone of the reactor shell; external chemicals can be added into the reactor through chemical distribution holes in the side wall of the reactor shell, a flow pushing device located on the inner side of the annular guide cylinder can push liquid in the annular guide cylinder downwards, and a water inlet of the cyclone separation system is communicated with a water outlet in the side wall of the lower end of the reactor shell through a pipeline. The drainage pump can pump crystals at the lower end of the reactor shell into a water inlet of the cyclone separation system, the cyclone separation system can conduct cyclone separation on the crystals in the cyclone separation system according to the weight, a small-particle crystal discharge port is formed in the side wall of the upper end of the cyclone separation system, and a large-particle crystal discharge port is formed in the lower end of the cyclone separation system. According to the invention, the hydraulic mixing condition in the reactor is improved, and the uniformity of crystallized products can be improved.

Description

Technical Field

[0001] This invention relates to the field of water treatment technology, and in particular to a crystallization reactor with highly dispersed cyclone separation function. Background Technology

[0002] In the field of wastewater resource utilization, the application of fluidized bed induced crystallization reactors mainly involves injecting wastewater and corresponding precipitants into a reactor with embedded seed crystals. During this process, anions and cations achieve thorough mixing through hydraulic action. When the activity product of these ions reaches the metastable region, they begin to precipitate from the liquid phase and transform into crystals. However, if the hydraulic mixing is uneven, causing the activity product of anions and cations to enter the supersaturation region, secondary nucleation may occur within the reaction zone, thereby reducing crystallization efficiency. Therefore, the hydraulic conditions inside the reactor have a significant impact on the supersaturation of anions and cations.

[0003] In fluidized bed crystallization processes, crystal size inhomogeneity is a common problem. This manifests as a wide size distribution of crystal particles in the crystalline product, ranging from large to small, sometimes even accompanied by abnormal shapes or irregular crystals. This size inhomogeneity can negatively impact product quality and consistency, thereby weakening its application effectiveness and market competitiveness.

[0004] Achieving uniform mixing of anions and cations without particle accumulation places extremely high demands on hydraulic conditions and their distribution. If particle accumulation occurs in any area, it can trigger a series of negative effects, leading to a sharp deterioration of the flow regime and creating a vicious cycle. Furthermore, the market demands uniformity in the size of the effluent crystal particles; currently, it is necessary to improve the quality and consistency of fluidized bed crystallization products to enhance the product's market competitiveness. Summary of the Invention

[0005] To overcome the above deficiencies, the present invention provides a crystallization reactor with high dispersion cyclone separation function, which can increase the crystallization load and ensure the uniformity of the size of the fluidized bed crystallization product.

[0006] The technical solution adopted by this invention to solve its technical problem is: a crystallization reactor with high dispersion cyclone separation function, comprising a reactor shell, a water distributor, a flow propulsion device, an annular guide tube, a drainage pump, and a cyclone separation system. A reaction zone is formed inside the reactor shell. An outlet is provided on the upper side wall of the reactor shell, and a drainage outlet is provided on the lower side wall of the reactor shell. The water distributor is fixedly installed on the inner side of the lower end of the reactor shell, and can distribute water to the reaction zone from bottom to top. The annular guide tube with openings at the top and bottom is fixedly installed within the reaction zone of the reactor shell. The reactor shell has chemical dosing holes, allowing external chemical dosing to be carried out through pipes via the chemical dosing system. The liquid is fed into the reactor through a hole. The propulsion device is located inside the annular guide tube. The propulsion device can push the liquid in the annular guide tube downward. The negative pressure generated by the downward propulsion causes the liquid in the reaction zone to enter the annular guide tube from the upper end. The inlet of the cyclone separation system is connected to the drain outlet on the lower side wall of the reactor shell through a pipe. The drain pump can pump the crystals deposited on the lower end of the reactor shell into the inlet of the cyclone separation system. The cyclone separation system can separate the crystals entering it according to their weight. A small particle crystal outlet is formed on the upper side wall of the cyclone separation system, and a large particle crystal outlet is provided at the lower end of the cyclone separation system.

[0007] As a further improvement of the present invention, the small particle crystal outlet on the upper sidewall of the cyclone separation system is connected to the reaction zone of the reactor shell through a pipe, and the small particle crystals separated by the cyclone separation system return to the reaction zone of the reactor shell along the pipe with the water flow.

[0008] As a further improvement of the present invention, the cyclone separation system includes a conical shell, a spiral guide tube, a water inlet, a small particle crystal outlet, and a large particle crystal outlet. The conical shell is fixedly installed at the lower end of the reactor shell, and the upper diameter of the conical shell is larger than the lower diameter. The spiral guide tube is fixedly installed on the inner side wall of the conical shell, extending spirally along the inner side wall. The water inlet and the small particle crystal outlet are both located on the upper side wall of the conical shell, and the water inlet is connected to the upper end of the spiral guide tube. The small particle crystal outlet is connected to the side wall of the spiral guide tube near the axis of the conical shell. The height of the small particle crystal outlet is lower than the height of the water inlet. The large particle crystal outlet is located at the lower end of the conical shell and is connected to the lower end of the spiral guide tube.

[0009] As a further improvement of the present invention, the cross-section of the spiral guide tube is rectangular, and the diameter of the spiral guide tube gradually decreases from top to bottom. The water inlet direction is tangent to the side wall of the spiral guide tube. The diameter of the outlet of the large crystal particles is the same as the diameter of the end of the spiral guide tube, and the water is drained downward along the symmetrical axis of the conical shell.

[0010] As a further improvement of the present invention, the diameter of the small particle crystal outlet of the cyclone separation system is larger than the diameter of the inlet, and the diameter of the inlet is larger than the diameter of the particle crystal outlet at the bottom of the conical shell.

[0011] As a further improvement of the present invention, the propulsion device is a propulsion agitator, which includes a stirring rod, a hub and helical blades. The stirring rod is coaxially arranged with the annular guide tube, the hub is installed at the lower end of the stirring rod, and the helical blades are fixedly installed on the outer circumference of the hub.

[0012] As a further improvement of the present invention, the helical blades of the propulsion agitator are located inside the opening at the upper end of the annular guide tube, and the radial dimension of the integral structure formed by the helical blades and the hub of the propulsion agitator is smaller than the diameter of the annular guide tube. The propulsion blades can push the liquid in the annular guide tube downward as the agitator rotates with the stirring rod.

[0013] As a further improvement of the present invention, the annular guide tube is provided with a plurality of fixing ribs extending radially on the outer circumferential side wall, the fixing ribs being fixedly connected to the inner side wall of the reaction zone of the reactor shell, and the annular guide tube being located at the center of the reaction zone of the reactor shell.

[0014] As a further improvement of the present invention, a reflux water distributor is also fixedly provided on the inner side of the lower end of the reactor shell. The reflux water distributor includes a distribution plate and reflux water distribution heads. The distribution plate is sealed and fixedly installed on the inner side wall of the lower end of the reactor shell, and a reflux water receiving cavity is formed between the distribution plate and the bottom surface of the lower end of the reactor shell. A plurality of distribution holes are evenly spaced on the distribution plate, and a plurality of reflux water distribution heads are fixedly installed on each distribution hole of the distribution plate in a corresponding manner. The reflux water in the reflux water receiving cavity can be distributed to the reaction zone of the reactor shell through each reflux water distribution head. A reflux water inlet is provided on the side wall of the lower end of the reactor shell, and the reflux water inlet is connected to the reflux water receiving cavity. A reflux water outlet is also provided on the side wall of the upper end of the reactor shell, and the reflux water outlet is connected to the reflux water inlet through a reflux pipe. A reflux pump is also provided, and the reflux pump can pump the liquid at the upper inner end of the reactor shell into the reflux water receiving cavity through the reflux pipe.

[0015] As a further improvement of the present invention, the water distributor includes a main water distribution pipe, a control water pipe, and T-shaped water distribution heads. The main water distribution pipe is fixedly installed on the lower side wall of the reactor shell. One end of the main water distribution pipe extends to the outside of the reactor shell, and the other end is located on the inner side of the lower end of the reactor shell. Several control water pipes are connected to the main water distribution pipe. Several water distribution ports are evenly spaced on the upper side of the several control water pipes. Several T-shaped water distribution heads are installed on each water distribution port in a corresponding manner. Wastewater entering through the main water distribution pipe can be distributed into the reactor shell through the T-shaped water distribution heads on each control water pipe.

[0016] The beneficial technical effects of this invention are as follows: The reagent is uniformly distributed into the annular guide tube of the reaction zone and pushed downward by the flow-pushing device, creating a negative pressure at the upper end of the annular guide tube. Wastewater outside the annular guide tube flows rapidly into the annular guide tube under the action of negative pressure, thereby forming an annular flow of wastewater and reagent around the annular guide tube, effectively improving the hydraulic mixing conditions inside the reactor, resulting in better mass transfer and better quality of the crystallized product. In addition, while the flow-pushing device promotes the downward flow of the reagent, it also returns the liquid at the upper end of the reactor to the lower end of the reactor. The return flow causes the influent to move upward. Under these conditions, the anions and cations in the influent and reagent are instantly and uniformly dispersed and fully mixed, greatly improving the crystallization load. Furthermore, the cyclone separation system installed below the reactor shell can effectively separate large and small crystals in the crystallization mixture through physical action, returning the small crystal particles back to the reactor, ultimately improving the uniformity of the size of the fluidized bed crystallization product. Attached Figure Description

[0017] Figure 1 This is a perspective view of the present invention;

[0018] Figure 2 This is the front view of the present invention;

[0019] Figure 3 This is a top view of the present invention;

[0020] Figure 4 This is a schematic diagram of the annular mixing principle of the present invention;

[0021] Figure 5 This is a perspective view of the reactor shell of the present invention;

[0022] Figure 6 This is a perspective view of the propeller-type mixer of the present invention;

[0023] Figure 7 This is a perspective view of the cyclone separation system of the present invention;

[0024] Figure 8 This is an exploded perspective view of the water distributor of the present invention;

[0025] Figure 9 This is an exploded perspective view of the return water distributor of the present invention;

[0026] Figure 10 This is a perspective view of the T-shaped water distribution head, the T-shaped medicine distribution head, and the return water distribution head of the present invention;

[0027] Figure 11 This is a front view of the T-shaped water distribution head, the T-shaped medicine distribution head, and the return water distribution head of the present invention;

[0028] Figure 12This is a bottom view of the T-shaped water distribution head, T-shaped medicine distribution head, and return water distribution head of the present invention. Detailed Implementation

[0029] Example: A crystallization reactor with high dispersion cyclone separation function includes a reactor shell 10, a water distributor 20, a flow propulsion device 40, an annular guide tube 50, a drainage pump, and a cyclone separation system 70. A reaction zone 15 is formed inside the reactor shell 10. An outlet 11 is provided on the upper side wall of the reactor shell 10, and a drainage outlet 14 is provided on the lower side wall of the reactor shell 10. The water distributor 20 is fixedly installed on the inner side of the lower end of the reactor shell 10, and can distribute water to the reaction zone 15 from bottom to top. The annular guide tube 50, with openings at the top and bottom, is fixedly installed inside the reaction zone 15 of the reactor shell 10. The reactor shell 10 has dosing holes, allowing external reagents to be added to the reactor interior through pipes via the dosing holes. The propulsion device 40 is located inside the annular guide tube 50. The propulsion device 40 can push the liquid in the annular guide tube 50 downward. The negative pressure generated by the downward propulsion causes the liquid in the reaction zone 15 to enter the annular guide tube 50 from the upper end. The inlet 73 of the cyclone separation system 70 is connected to the drain outlet 14 on the lower side wall of the reactor shell 10 through a pipe. The drain pump can pump the crystals deposited on the lower end of the reactor shell 10 into the inlet 73 of the cyclone separation system 70. The cyclone separation system 70 can separate the crystals entering it according to their weight. A small particle crystal outlet 75 is formed on the upper side wall of the cyclone separation system 70, and a large particle crystal outlet 74 is provided at the lower end of the cyclone separation system 70.

[0030] In use, wastewater enters the reactor shell 10 through the water distributor 20 at the lower end of the reactor shell 10 and flows from bottom to top. The reagent is directly distributed into the reactor through the distribution hole. The flow-pushing device 40 pushes the liquid in the annular guide tube 50 downward. The water inlet outside the guide tube is drawn into the inner side of the annular guide tube 50 from the upper end of the annular guide tube under negative pressure and mixes with the reagent. After mixing, it is pushed downward and flows out of the annular guide tube, thereby realizing the rapid mixing of wastewater and reagent, accelerating the reaction between wastewater and reagent to form crystal precipitate. The crystal precipitate is pumped into the cyclone separation system 70 by the drain pump. After cyclone separation in the cyclone separation system 70, the large crystal particles are directly discharged and subsequently recycled through washing, dehydration and other treatments. The above crystallization reactor has a fast reaction speed and can realize automatic screening of crystal particle size. The large crystal particles have high uniformity, which is conducive to the recycling of products.

[0031] The small particle crystal outlet 75 on the upper sidewall of the cyclone separation system 70 is connected to the reaction zone 15 of the reactor shell 10 via a pipe. The small particle crystals separated by the cyclone separation system 70 return to the reaction zone 15 of the reactor shell 10 along the pipe with the water flow. The small particle crystals are discharged from the small particle crystal outlet 75 at the upper end of the cyclone separation system 70 and transported back to the reaction zone 15 inside the reactor shell 10 through the pipe to be used as seed crystals. The small particle crystals can automatically flow back into the reaction zone 15 of the reactor to participate in crystallization, thereby achieving effective control of crystal particle size.

[0032] The cyclone separation system 70 includes a conical shell 71, a spiral guide tube 72, an inlet 73, a small particle crystal outlet 75, and a large particle crystal outlet 74. The conical shell 71 is fixedly installed at the lower end of the reactor shell 10. The upper diameter of the conical shell 71 is larger than the lower diameter. The spiral guide tube 72 is fixedly installed on the inner side wall of the conical shell 71, extending spirally along the inner side wall. The inlet 73 and the small particle crystal outlet 75 are both located on the upper side wall of the conical shell 71. The inlet 73 is connected to the upper end of the spiral guide tube 72. The small particle crystal outlet 75 is connected to the side wall of the spiral guide tube 72 near the axis of the conical shell 71. The height of the small particle crystal outlet 75 is lower than the height of the inlet 73. The large particle crystal outlet 74 is located at the lower end of the conical shell 71 and is connected to the lower end of the spiral guide tube 72. After water carrying a large number of crystal particles enters the spiral guide tube 72, it rapidly spirals downwards along the tube. During this spiraling motion, under centrifugal force, large crystal particles flow downwards along the outer wall of the spiral guide tube 72, while small crystal particles flow downwards along the inner wall. When the small crystal particles pass through the small crystal discharge outlet 75 located on the inner wall of the spiral guide tube 72, they are discharged along this outlet. The small crystal discharge outlet 75 of the cyclone separation system 70 is connected to a pipe vertically inserted from the upper part of the conical shell 71, enabling the discharge of small crystal particles. The upper end of this vertically inserted pipe can be directly inserted into the reactor through the bottom surface of the reactor shell 10. Large crystal particles are finally discharged from the lower opening of the spiral guide tube 72 at the bottom of the conical shell 71. The cyclone separation system 70 has a simple structure and is directly installed at the lower end of the reactor shell 10, without occupying additional external horizontal space.

[0033] The spiral guide tube 72 has a rectangular cross-section, and its diameter gradually decreases from top to bottom. The water inlet 73 is tangent to the side wall of the spiral guide tube 72. The diameter of the large crystal discharge outlet 74 is the same as the diameter of the end of the spiral guide tube 72, and it drains water downwards along the symmetrical axis of the conical shell 71. The inlet 73 of the cyclone separation system 70 is tangentially connected to the internal spiral guide tube 72, and the water enters the spiral guide tube 72 tangentially along the spiral line. The rectangular spiral guide tube 72 enables sufficient separation of small and large crystal particles within the tube.

[0034] In the cyclone separation system 70, the diameter of the small particle crystal outlet 75 is larger than the diameter of the inlet 73, and the diameter of the inlet 73 is larger than the diameter of the particle crystal outlet at the bottom of the conical shell 71. This slows down the flow rate of the small particle crystals, allowing them to be discharged smoothly.

[0035] The flow-pushing device 40 is a propeller-type agitator, which includes a stirring rod 41, a hub, and helical blades 42. The stirring rod 41 is coaxially arranged with the annular guide tube 50, the hub is installed at the lower end of the stirring rod 41, and the helical blades are fixedly installed on the outer circumference of the hub. The propeller-type agitator simultaneously pushes the water flow downwards and mixes the liquid within the annular guide tube 50.

[0036] The helical blades of the propeller-type agitator are located inside the upper opening of the annular guide tube 50, and the radial dimension of the integral structure formed by the helical blades and the hub of the propeller-type agitator is smaller than the diameter of the annular guide tube 50. The propeller blades, rotating with the stirring rod 41, can push the liquid in the annular guide tube 50 downward. When the stirring rod 41 of the propeller-type agitator rotates, it drives the helical blades to rotate above the dosing device, thereby achieving the simultaneous stirring and mixing of the liquid in the annular guide tube 50 and pushing the agent downward.

[0037] The annular guide tube 50 has several radially extending fixing ribs 51 on its outer circumferential outer wall. The fixing ribs 51 are fixedly connected to the inner wall of the reaction zone 15 of the reactor shell 10. The annular guide tube 50 is located at the center of the reaction zone 15 of the reactor shell 10. The fixing ribs 51 concentrically fix the annular guide tube 50 within the reaction zone 15 of the reactor shell 10. At the same time, it can ensure that the wastewater flowing up from below can flow upward outside the annular guide tube 50 and quickly enter the annular guide tube 50 under the action of negative pressure suction, so that the wastewater and the reagent form a circulation inside and outside the annular guide tube 50, realizing rapid mixing of the reagent and wastewater in the reaction zone 15.

[0038] A return water distributor 60 is also fixedly installed on the inner side of the lower end of the reactor shell 10. The return water distributor 60 includes a distribution plate 61 and return water distribution heads 63. The distribution plate 61 is sealed and fixedly installed on the inner side wall of the lower end of the reactor shell 10, forming a return water receiving cavity between the distribution plate 61 and the bottom surface of the lower end of the reactor shell 10. A plurality of distribution holes 62 are evenly spaced on the distribution plate 61, and a plurality of return water distribution heads 63 are fixedly installed on each of the distribution holes 62 of the distribution plate 61 in a corresponding manner. The return water in the return water receiving cavity... The flowing water can be distributed towards the reaction zone 15 of the reactor shell 10 through each return water distribution head 63. A return water inlet 13 is provided on the lower side wall of the reactor shell 10, and the return water inlet 13 is connected to the return water receiving cavity. A return water outlet 12 is also provided on the upper side wall of the reactor shell 10. The return water outlet 12 is connected to the return water inlet 13 through the return pipe 16. A return pump is also provided, which can pump the liquid at the upper inner side of the reactor shell 10 into the return water receiving cavity through the return pipe 16.

[0039] By fixing and installing a distribution plate 61 inside the lower end of the reactor shell 10, a reflux water receiving cavity is formed at the bottom of the reactor shell 10. The part of the reactor shell 10 above the distribution plate 61 is the reaction zone 15 of the reactor. Water at the upper end of the reactor shell 10 is pumped into the reflux water receiving cavity by a reflux pump through the reflux water outlet 12 (whose height is lower than the outlet 11 at the upper end of the reactor). Then, the reflux water is evenly sent into the reactor by the reflux water distribution head 63 facing upward. The reflux water can flow upward together with the wastewater distributed by the water distributor 20, and the reflux water can provide upward power for the wastewater distributed into the reactor.

[0040] The water distributor 20 includes a main water distribution pipe 21, a distribution water pipe 22, and T-shaped water distribution heads 24. The main water distribution pipe 21 is fixedly installed on the lower side wall of the reactor shell 10. One end of the main water distribution pipe 21 extends to the outside of the reactor shell 10, and the other end of the main water distribution pipe 21 is located on the inner side of the lower end of the reactor shell 10. Several distribution water pipes 22 are connected to the main water distribution pipe 21. Several distribution ports 23 are evenly spaced on the upper side of the several distribution water pipes 22. Several T-shaped water distribution heads 24 are installed on each distribution port 23 in a corresponding manner. Wastewater entering through the main water distribution pipe 21 can be distributed into the reactor shell 10 through the T-shaped water distribution heads 24 on each distribution water pipe 22.

[0041] The water supply pipe 22 can be several pipes perpendicular to the main water supply pipe 21, or it can be a multi-ring pipe. The T-shaped water distribution head 24, the T-shaped medicine distribution head, and the return water distribution head 63 can have the same structure, all of which include an inlet pipe column 241 and a quasi-ellipsoidal cavity 242. The top surface of the quasi-ellipsoidal cavity is sealed, and the bottom surface has a water distribution hole 243. The water distribution hole is a strip-shaped opening that extends radially along the bottom surface of the quasi-ellipsoidal cavity. Several water distribution holes are arranged in a ring along the bottom surface of the quasi-ellipsoidal cavity. The inlet pipe column is open at both the top and bottom. The bottom end of the inlet pipe column is the water inlet end, and the top end is the water outlet end. The outlet end of the inlet pipe column extends to the top of the quasi-ellipsoidal cavity. The connection between the inlet pipe column and the quasi-ellipsoidal cavity is sealed.

Claims

1. A crystallization reactor with high dispersion cyclone separation function, characterized in that: The reactor includes a reactor shell (10), a water distributor (20), a flow propulsion device (40), an annular guide tube (50), a drainage pump, and a cyclone separation system (70). A reaction zone (15) is formed inside the reactor shell. An outlet (11) is provided on the upper side wall of the reactor shell, and a drainage outlet is provided on the lower side wall. The water distributor is fixedly installed on the inner side of the lower end of the reactor shell, and can distribute water to the reaction zone from bottom to top. The annular guide tube with openings at the top and bottom is fixedly installed within the reaction zone of the reactor shell. The reactor shell has a dosing hole, allowing external reagents to be added into the reactor through a pipe via the dosing hole. The flow propulsion device (40)... The flow device is located inside the annular guide tube. The flow device can push the liquid in the annular guide tube downward. The negative pressure generated by the downward push causes the liquid in the reaction zone to enter the annular guide tube from the upper end. The inlet of the cyclone separation system is connected to the drain outlet (14) on the lower side wall of the reactor shell through a pipe. The drain pump can pump the crystals deposited on the lower end of the reactor shell into the inlet of the cyclone separation system. The cyclone separation system can separate the crystals that enter it according to their weight. A small particle crystal outlet (75) is formed on the upper side wall of the cyclone separation system, and a large particle crystal outlet (74) is provided at the lower end of the cyclone separation system.

2. The crystallizing reactor with high dispersion cyclone separation function according to claim 1, characterized in that: The small particle crystal outlet on the upper sidewall of the cyclone separation system is connected to the reaction zone of the reactor shell through a pipe. The small particle crystals separated by the cyclone separation system return to the reaction zone of the reactor shell along the pipe with the water flow.

3. The crystallization reactor with high dispersion cyclone separation function according to claim 2, characterized in that: the cyclone separation system includes a conical shell (71), a spiral guide pipe (72), an inlet (73), a small particle crystal outlet and a large particle crystal outlet, the conical shell is fixedly installed at the lower end of the reactor shell, the upper diameter of the conical shell is larger than the lower diameter, the spiral guide pipe is fixedly installed on the inner side wall of the conical shell in a spiral extension along the inner side wall of the conical shell, the inlet and the small particle crystal outlet are both located on the upper side wall of the conical shell, and the inlet is connected to the upper end of the spiral guide pipe, the small particle crystal outlet is connected to the side wall of the spiral guide pipe near the axis of the conical shell, the height of the small particle crystal outlet is lower than the height of the inlet, and the large particle crystal outlet is located at the lower end of the conical shell and is connected to the lower end of the spiral guide pipe.

4. The crystallizing reactor with high dispersion cyclone separation function according to claim 3, characterized in that: the cross-section of the spiral guide tube is rectangular, and the diameter of the spiral guide tube gradually decreases from top to bottom; the water inlet direction is tangent to the side wall of the spiral guide tube; the diameter of the outlet of large crystal particles is the same as the diameter of the end of the spiral guide tube, and the water is discharged downward along the symmetrical axis of the conical shell.

5. The crystallizing reactor with high dispersion cyclone separation function according to claim 3, characterized in that: The diameter of the small particle crystal outlet of the cyclone separation system is larger than the diameter of the inlet, and the diameter of the inlet is larger than the diameter of the particle crystal outlet at the bottom of the conical shell.

6. The crystallization reactor with high dispersion cyclone separation function according to claim 1, characterized in that: The propulsion device is a propulsion agitator, which includes a stirring rod (41), a hub and a spiral blade (42). The stirring rod is coaxially arranged with the annular guide tube, the hub is installed at the lower end of the stirring rod, and the spiral blade is fixedly installed on the outer circumference of the hub.

7. The crystallizing reactor with high dispersion cyclone separation function according to claim 5, characterized in that: The helical blades of the propeller agitator are located inside the opening at the upper end of the annular guide tube, and the radial dimension of the integral structure formed by the helical blades and the hub of the propeller agitator is smaller than the diameter of the annular guide tube. The propeller blades can push the liquid in the annular guide tube downward as the agitator rotates with the agitator rod.

8. The crystallizing reactor with high dispersion cyclone separation function according to claim 1, characterized in that: The annular guide tube has several fixing ribs (51) extending radially on its outer circumference outer wall. The fixing ribs are fixedly connected to the inner wall of the reactor shell reaction zone. The annular guide tube is located at the center of the reactor shell reaction zone.

9. The crystallizing reactor with high dispersion cyclone separation function according to claim 1, characterized in that: a reflux water distributor (60) is fixedly provided on the inner side of the lower end of the reactor shell, the reflux water distributor includes a distribution plate (61) and reflux water distribution heads (63), the distribution plate is sealed and fixedly installed on the inner side wall of the lower end of the reactor shell, a reflux water receiving cavity is formed between the distribution plate and the bottom surface of the lower end of the reactor shell, a plurality of distribution holes (62) are evenly spaced on the distribution plate, and a plurality of reflux water distribution heads are fixedly installed on the distribution plate one-to-one. On each distribution hole of the plate, the return water in the return water receiving cavity can be distributed towards the reaction zone of the reactor shell through each return water distribution head. A return water inlet (13) is provided on the side wall at the lower end of the reactor shell. The return water inlet is connected to the return water receiving cavity. A return water outlet (12) is also provided on the side wall at the upper end of the reactor shell. The return water outlet is connected to the return water inlet through a return pipe (16). A return pump is also provided. The return pump can pump the liquid at the upper end of the inner side of the reactor shell into the return water receiving cavity through the return pipe.

10. The crystallizing reactor with high dispersion cyclone separation function according to claim 1, characterized in that: The water distributor includes a main water distribution pipe (21), a control water pipe (22), and a T-shaped water distribution head (24). The main water distribution pipe is fixedly installed on the lower side wall of the reactor shell. One end of the main water distribution pipe extends to the outside of the reactor shell, and the other end of the main water distribution pipe is located on the inner side of the lower end of the reactor shell. Several control water pipes are connected to the main water distribution pipe. Several water distribution ports (23) are evenly spaced on the upper side of the several control water pipes. Several T-shaped water distribution heads are installed on each water distribution port in a corresponding manner. Wastewater entering through the main water distribution pipe can be distributed into the reactor shell through the T-shaped water distribution heads on each control water pipe.

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