Induced crystallization fluidized bed device

Abstract

The utility model discloses an induced crystallization fluidized bed device which is characterized in that an inner cavity of a reaction container is divided into a water collection area, a crystallization area and a material distribution area; the seed crystal feeding mechanism is provided with an accommodating container arranged in the material distribution area and a feeding mechanism for feeding seed crystals into the accommodating container; the mixed liquid feeding mechanism is provided with a functional part arranged in the accommodating container, a first pipe body arranged above the functional part and a second pipe body inserted in the first pipe body, a plurality of cutting blocks are arranged at the upper part of the functional part so as to cut and mix the wastewater and the medicament to obtain mixed liquid, and the lower part of the functional part provides a contact surface for full contact of the seed crystal and the mixed liquid; circulating liquid is sprayed into the accommodating container by a fluidizing pipe in the fluidizing mechanism, so that the seed crystal is in a fluidized state and flows to a crystallization area together with the mixed liquid to form crystal grains after being mixed with the mixed liquid; and the crystal grain recovery mechanism recovers the crystal grains. According to the induced crystallization fluidized bed device, heavy metals in wastewater can be recovered in a high-purity crystal grain form, the resource recovery rate of the heavy metals in the wastewater is increased, and market requirements are met.

Description

Technical Field

[0001] The utility model relates to the technical field of heavy metal wastewater treatment, in particular to an induced crystallization fluidized bed device. Background Art

[0002] In the field of heavy metal wastewater treatment, the use of induced crystallization technology to treat wastewater has developed rapidly. Induced crystallization technology is based on the principle of induced nucleation in crystallography. An appropriate amount of seed crystals are filled in a fluidized bed-based crystallization reactor, and specific chemical agents are added to react with the ions to be removed from the wastewater to form insoluble salts, which are then crystallized and deposited on the surface of the seed crystals. As the pollutants (i.e., the "ions to be removed from the wastewater") are continuously transferred from the liquid phase to the solid phase, the seed crystals continue to grow, eventually forming large-particle crystalline products, achieving harmless and resource-based disposal of the pollutants.

[0003] However, in the currently commonly used induced crystallization fluidized bed device, when the chemical agent and wastewater are fed into the crystallization reactor, the fine crystals generated by their reaction cannot be well attached / deposited on the surface of the seed crystal, but will flow out of the reactor with the effluent, resulting in a low resource recovery rate of heavy metals in the wastewater, which cannot well meet the market demand. In view of this, the present utility model is specially proposed. Summary of the invention

[0004] In order to overcome the above-mentioned defects, the utility model provides an induced crystallization fluidized bed device, which has a simple, reasonable and novel structure. It can realize the resource recovery of heavy metals in wastewater in the form of high-purity grains, effectively improve the resource recovery rate of heavy metals in wastewater, and well meet market demand.

[0005] The technical solution adopted by the utility model to solve the technical problem is: an induced crystallization fluidized bed device, comprising:

[0006] The reaction container has an inner cavity which is divided into a water collection area, a crystallization area and a material distribution area from top to bottom;

[0007] A seed crystal feeding mechanism, which is provided with a storage container arranged in the material distribution area and a feeding mechanism capable of feeding seed crystals into the storage container; and the top side of the storage container is connected with the crystallization area;

[0008] A mixed liquid feeding mechanism, which is provided with a functional part built into the receiving container, a first tube body connected to an external wastewater supply device and suspended above the functional part, and a second tube body connected to an external drug supply device and inserted into the first tube body; wherein the upper part of the functional part is provided with a plurality of cutting blocks for cutting and mixing the wastewater and the drug sprayed on the functional part to obtain a mixed liquid; and the lower part of the functional part can provide a contact surface for the seed crystal and the mixed liquid to fully contact and mix;

[0009] A fluidizing mechanism, which is provided with a fluidizing pipe connected to the bottom of the receiving container and a pumping mechanism capable of connecting the fluidizing pipe with the water collection area; circulating liquid is sprayed into the receiving container through the fluidizing pipe, so that the seed crystals in the receiving container can be fluidized, and the seed crystals in the fluidized state can be fully contacted and mixed with the mixed liquid, and then flow upward to the crystallization area to form grains;

[0010] The crystal grain recovery mechanism is connected to the fluidizing pipe and can recover the crystal grains.

[0011] As a further improvement of the present invention, the storage containers are configured in plurality and are arranged at intervals on the same horizontal plane of the material distribution area; correspondingly, the functional parts, the first tube body, the second tube body and the fluidizing pipe are also configured in plurality and correspond one-to-one to the plurality of storage containers respectively.

[0012] As a further improvement of the present invention, the upper portion of the functional part is a structure of narrow upper portion and wide lower portion, and the plurality of cutting blocks are also structures of narrow upper portion and wide lower portion, and are respectively arranged obliquely on the upper portion of the functional part;

[0013] The lower part of the functional part is a structure that is wide at the top and narrow at the bottom, and the lower surface of the functional part is also a smooth plane.

[0014] As a further improvement of the present invention, the upper part and the lower part of the functional part are connected coplanarly and arranged in mirror symmetry, and the upper part of the functional part is a cone structure;

[0015] A plurality of the cutting blocks are all of quadrangular pyramid structure, and a plurality of the cutting blocks are arranged on the upper part of the functional part to form a plurality of concentric rings.

[0016] As a further improvement of the present invention, the upper part and the lower part of the functional part, and the plurality of cutting blocks are an integrated structure; in addition, the functional part is positioned and built into the storage container.

[0017] As a further improvement of the present invention, a gap is formed between each of the first tube bodies and the second tube body therein, and the lower ends of the first tube body and the second tube body are flush with each other;

[0018] In addition, the mixed liquid feeding mechanism is also provided with a water distribution component connected between the external wastewater supply equipment and the multiple first tube bodies and capable of evenly distributing wastewater to the multiple first tube bodies, and a medicine distribution component connected between the external medicine supply equipment and the multiple second tube bodies and capable of evenly distributing medicine to the multiple second tube bodies.

[0019] As a further improvement of the present invention, the plurality of storage containers are hollow structures that are wide at the top and narrow at the bottom and open at the top side;

[0020] An auxiliary slag guiding mechanism is also provided, which includes a partition fixedly connected to the top sides of the plurality of receiving containers, a plurality of through holes provided on the partition and respectively corresponding to the through holes penetrating the top sides of the plurality of receiving containers, and a plurality of slag guiding parts provided on the partition and capable of guiding crystal grains to flow into the through holes; wherein the periphery of the partition is also fixedly connected to the inner wall of the reaction container without a gap.

[0021] As a further improvement of the present invention, the slag guide piece is fixedly arranged on the upper side of the partition and close to the through-opening, and the side surface of the slag guide piece facing the through-opening is an inclined surface; in addition, the feeding mechanism is provided with a plurality of feeding branch pipes respectively corresponding to the plurality of the receiving containers, and a feeding air pipe connected to the plurality of the feeding branch pipes.

[0022] As a further improvement of the present invention, the pumping mechanism is provided with a water distribution chamber B connected to the plurality of fluidizing tubes, and a water pump connected through a water pipe and connected between the water distribution chamber B and the water collection area; the grain recovery mechanism is provided with a slag discharge pipe also connected to the water distribution chamber B.

[0023] As a further improvement of the present invention, a filter is provided between the water collection area and the crystallization area.

[0024] The beneficial effects of the utility model are as follows: the utility model makes structural innovations on the induced crystallization fluidized bed device, especially on the "seed feeding mechanism" and the "mixed liquid feeding mechanism", so as to ensure that the seed crystal can be fully contacted and mixed with the mixed liquid, thereby significantly improving the crystallization quality, and realizing resource recovery of heavy metals (such as fluorine) in wastewater in the form of high-purity crystal particles (calcium fluoride particles), that is, improving the resource recovery rate of heavy metals in wastewater; effectively solving the problem of serious shortage of heavy metal resources (fluorite and other fluorine resources) in my country, and meeting market demand well. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a schematic diagram of the three-dimensional structure of the induced crystallization fluidized bed device of the utility model;

[0026] Figure 2 It is a schematic diagram of the top view of the structure of the induced crystallization fluidized bed device of the utility model;

[0027] Figure 3 It is a (partial) structural schematic diagram of the seed feeding mechanism, the mixed liquid feeding mechanism, the fluidizing mechanism and the crystal grain recovery mechanism of the utility model assembled together;

[0028] Figure 4for Figure 3 A schematic diagram of a partially enlarged structure of the assembly structure shown;

[0029] Figure 5 It is a structural schematic diagram of the receiving container and the auxiliary slag guiding mechanism of the utility model in a disassembled state;

[0030] Figure 6 It is a schematic diagram of the top view of the storage container of the utility model;

[0031] Figure 7 It is a partial structural schematic diagram of the mixed liquid feeding mechanism of the utility model (lacking the functional parts);

[0032] Figure 8 It is an enlarged structural schematic diagram of the functional parts of the utility model;

[0033] Fig. 9 It is a (partial) structural schematic diagram of the fluidization mechanism and the crystal grain recovery mechanism of the utility model when they are assembled together.

[0034] Combined with the attached drawings, the following description is given:

[0035] 1. Reaction vessel; 10. Water collection area; 11. Crystallization area; 12. Distribution area;

[0036] 20. Storage container; 200. Connection port; 21. Feeding air pipe; 30. Functional parts;

[0037] 300, upper part; 301, cutting block; 302, lower part; 31, first tube body; 32, second tube body; 33, waste water inlet pipe; 34, water distribution chamber A; 35, first branch pipe; 36, medicine inlet pipe; 37, medicine distribution chamber; 38, second branch pipe; 40, fluidizing pipe; 41, water distribution chamber B; 42, water pipe; 50, slag discharge pipe; 60, partition; 61, through-port; 62, slag guide. DETAILED DESCRIPTION

[0038] The preferred embodiments of the present utility model are described in detail below in conjunction with the accompanying drawings.

[0039] Embodiment 1:

[0040] Please see attached Figure 1 To Attachment Fig. 9As shown, this embodiment 1 provides an induced crystallization fluidized bed device, which mainly includes a reaction container 1, a seed feeding mechanism, a mixed liquid feeding mechanism, a fluidizing mechanism and a crystal grain recovery mechanism, wherein the inner cavity of the reaction container 1 is divided into a water collection area 10, a crystallization area 11 and a distribution area 12 from top to bottom; the seed feeding mechanism is provided with a receiving container 20 arranged in the distribution area 12 and a feeding mechanism capable of feeding seeds into the receiving container 20, and the top side of the receiving container 20 is also connected with the crystallization area 11; the mixed liquid feeding mechanism is provided with a functional part 30 built in the receiving container 20, a first tube body 31 connected with an external wastewater supply device and suspended above the functional part 30, and a second tube body 32 connected with an external drug supply device and inserted in the first tube body 31, In particular, the upper part 300 of the functional part 30 is provided with a plurality of cutting blocks 301 for cutting and mixing the wastewater and the reagent sprayed on the functional part 30 to obtain a mixed liquid, and the lower part 302 of the functional part 30 can provide a contact surface for the crystal seeds and the mixed liquid to fully contact and mix; the fluidization mechanism is provided with a fluidization pipe 40 connected to the bottom of the receiving container 20 and a pumping mechanism capable of connecting the fluidization pipe 40 with the water collection area 10, and circulating liquid is sprayed into the receiving container 20 through the fluidization pipe 40, so that the crystal seeds in the receiving container 20 can be fluidized, and the crystal seeds in the fluidized state can also be fully contacted and mixed with the mixed liquid, and then flow upward together to the crystallization area 11 to form grains; the grain recovery mechanism is connected to the fluidization pipe 40, and can recover the grains.

[0041] The specific structure and working method of the induced crystallization fluidized bed device described in this embodiment are described in detail below.

[0042] First, the specific structure of the induced crystallization fluidized bed device is described.

[0043] Please continue to refer to the attached Figure 1 As shown, the reaction vessel 1 in this embodiment preferably adopts a cylindrical structure, and the inner cavity of the reaction vessel 1 is also divided into three sections, namely the above-mentioned water collection area 10, crystallization area 11 and distribution area 12. It can be understood that the distribution area 12 mainly provides installation space for the feeding mechanism (whole or local structure) of materials such as crystal seeds, wastewater, reagents and circulating liquids, the crystallization area 11 mainly provides growth space for crystal seeds to crystallize and grow into grains, and the water collection area 10 is mainly used to collect and supply circulating liquids.

[0044] Based on the working contents of the above three sections, this embodiment also needs to set a filter in the inner cavity of the reaction container 1 and between the water collection area 10 and the crystallization area 11, and the filter must also have the function of "allowing the circulation liquid to pass / flow, but not allowing the crystals to pass"; so as to meet the working content requirements of the water collection area 10 and the crystallization area 11. In addition, regarding the specific structural type of the filter, this embodiment preferably uses an ultrafiltration membrane filter, but in actual application it is not limited to this filter type and is determined according to production requirements.

[0045] Supplementary explanation: Regarding the arrangement of a filter between the water collection area 10 and the crystallization area 11, this is a common technical means in the existing induced crystallization fluidized bed device, so it will not be described in detail here.

[0046] Please continue to refer to the attached Figure 2 To Attachment Figure 6 As shown, in the seed feeding mechanism of this embodiment, the receiving container 20 is configured as a plurality of containers, and is arranged at intervals on the same horizontal plane of the distribution area 12; moreover, the plurality of receiving containers 20 are hollow structures that are wide at the top and narrow at the bottom and open at the top, so as to realize that the receiving container 20 is connected with the crystallization area 11, and is also conducive to the fluidization movement of the seed crystal. Further, the receiving container 20 of this embodiment preferably adopts a hollow inverted rounded table structure.

[0047] In addition, the number and arrangement of the storage containers 20 can be determined according to production requirements, such as: ① See attached Figure 5 As shown, the number of the storage containers 20 is seven (but not limited to seven). ② The plurality of storage containers 20 can be arranged in a circular ring, a matrix, or the like.

[0048] The feeding mechanism is provided with a plurality of feeding branches corresponding to and connected to the plurality of storage containers 20, and a feeding air pipe 21 (which can be used to feed the feed branches) connected to the plurality of feeding branches. Figure 1 and attached Figure 2 As shown). It can be understood that in this embodiment, the gas feeding function of the feeding mechanism is combined with the gravity of the seed crystals themselves to achieve feeding the seed crystals into the receiving container 20, and the feeding speed is fast and the accuracy is high.

[0049] Please continue to refer to the attached Figure 2 To Attachment Figure 4As shown, based on the configuration of the above-mentioned receiving container 20, in the mixed liquid feeding mechanism described in this embodiment, the functional part 30, the first tube body 31, and the second tube body 32 are also respectively configured as multiple, and correspond one to one with the multiple receiving containers 20 respectively; it can be understood that each of the receiving containers 20 is provided with a functional part 30, and each of the functional parts 30 is suspended above a first tube body 31 and a second tube body 32.

[0050] Regarding the functional part 30, the preferred implementation structure of this embodiment is: Figure 8 As shown, the upper part 300 of the functional part 30 is a narrow upper and wide lower structure, and the plurality of cutting blocks 301 are also narrow upper and wide lower structures, and are respectively arranged obliquely on the upper part 300 of the functional part 30, so as to facilitate the cutting and mixing of wastewater and reagents to obtain a uniformly mixed mixed liquid; the lower part 302 of the functional part 30 is a wide upper and narrow lower structure, and the surface of the lower part 302 of the functional part 30 is also a smooth plane, so as to facilitate the fluidized crystal seeds to flow upward quickly on the lower part 302 of the functional part 30 and achieve contact and mixing with the mixed liquid. It can be understood that through the functional part 30, it is possible to achieve full mixing of wastewater and reagents, and to achieve flow guidance and auxiliary support of the fluidized crystal seeds, so that the fluidized crystal seeds can be fully contacted and mixed with the mixed liquid, which is very beneficial to improve the crystal quality of the crystal seeds.

[0051] Further, in this embodiment, ① the upper part 300 and the lower part 302 of the functional part 30 are connected in the same plane and are arranged in mirror symmetry, and the upper part 300 of the functional part 30 is a cone structure, and the lower part 302 of the functional part 30 is an inverted cone structure; it can be understood that the upper part 300 of the cone structure and the lower part 302 of the inverted cone structure can facilitate the downward flow of the mixed liquid and the upward flow of the seed crystal. ② Several of the cutting blocks 301 are all tetrahedral pyramid structures, and several of the cutting blocks 301 are also arranged on the upper part 300 of the functional part 30 to form a plurality of concentric rings, so as to facilitate the full and uniform cutting and mixing of the wastewater and the reagent.

[0052] Furthermore, the upper part 300 and the lower part 302 of the functional part 30, and the plurality of cutting blocks 301 are an integrated structure; moreover, the functional part 30 is positioned and built into the storage container 20 as a whole. In addition, regarding the "positioned and built-in" method, it can be further adopted that: the coplanar part of the upper part 300 and the lower part 302 of the functional part 30 is fixedly connected to the inner bottom wall or the inner side wall of the storage container 20 through a connecting rod. It can be understood that in actual application, it is not limited to the above-mentioned "positioned and built-in" method, as long as the positioning and installation method of the functional part 30 does not affect the circulating liquid injection / seed fluidization.

[0053] Regarding the first tube body 31 and the second tube body 32, the preferred implementation structure of this embodiment is: Figure 3 and attached Figure 7 As shown, each of the first tube bodies 31 and the second tube bodies 32 therein are both vertical tube-shaped and are arranged on the same center line. Moreover, a gap is formed between each of the first tube bodies 31 and the second tube bodies 32 therein for wastewater to flow. The lower ends of each of the first tube bodies 31 and the second tube bodies 32 therein are also flush with each other, so as to achieve simultaneous spraying and sufficient mixing of wastewater and chemicals, and effectively avoid premature contact reaction between wastewater and chemicals.

[0054] In addition, the mixed liquid feeding mechanism is also provided with a water distribution component connected between an external wastewater supply device and a plurality of first tube bodies 31 and capable of evenly distributing wastewater to the plurality of first tube bodies 31 , and a medicine distribution component connected between an external medicine supply device and a plurality of second tube bodies 32 and capable of evenly distributing medicine to the plurality of second tube bodies 32 .

[0055] For details, please refer to the attached Figure 1 To Attachment Figure 3 , and attached Figure 7 As shown, the water distribution assembly has a water inlet and wastewater pipe 33 extending out of the reaction container 1 and connected to an external water supply and wastewater device, a water distribution chamber A34 connected to the water inlet and wastewater pipe 33, and a plurality of first branch pipes 35 symmetrically connected to the water distribution chamber A34, and the plurality of first branch pipes 35 are respectively connected to the plurality of first tube bodies 31. The medicine distribution assembly has a medicine inlet pipe 36 extending out of the reaction container 1 and connected to an external medicine supply device, a medicine distribution chamber 37 connected to the medicine inlet pipe 36, and a plurality of second branch pipes 38 symmetrically connected to the medicine distribution chamber 37, and the plurality of second branch pipes 38 are respectively connected to the plurality of second tube bodies 32.

[0056] When assembling the water distribution assembly, the first tube body 31, the medicine distribution assembly and the second tube body 32, the present embodiment adopts the following assembly method: the first branch pipe 35 is connected and communicated with the upper side wall of the first tube body 31, the second tube body 32 is sealedly inserted into the first tube body 31 from the top end of the first tube body 31, the second branch pipe 38 is connected and communicated with the top end of the second tube body 32, and the medicine distribution chamber 37 is selectively placed on or fixedly connected to the upper side of the water distribution chamber A34.

[0057] Please continue to refer to the attached Figure 1 , Attachment Figure 3 and attached Fig. 9As shown, based on the configuration of the above-mentioned receiving container 20, in the fluidization mechanism of this embodiment, the fluidization pipe 40 is also configured as multiple, and is respectively connected to the multiple receiving containers 20 in a one-to-one correspondence; specifically, the fluidization pipe 40 is connected and communicated with the connection port 200 on the bottom wall of the receiving container 20. The pumping mechanism is provided with a water diversion chamber B41 connected to the multiple fluidization pipes 40, and a water pump connected and connected between the water diversion chamber B41 and the water collection area 10 through a water pipe 42, and the water pump can preferably be a circulating water pump (not shown in the figure, but it does not affect the understanding of the working principle of the pumping mechanism).

[0058] Furthermore, the water diversion chamber B41 preferably adopts a hollow inverted frustum structure, and the water diversion chamber B41 is provided with a plurality of symmetrically arranged connecting ports for connecting to a plurality of the fluidizing pipes 40 , and a main water inlet and outlet, and the main water inlet and outlet are connected and communicated with the water pipe 42 .

[0059] Based on the above fluidization mechanism structure, in order to realize the communication between the grain recovery mechanism and the fluidization pipe 40, the preferred implementation structure of this embodiment is: Figure 3 and attached Fig. 9 As shown, the grain recovery mechanism is provided with a slag discharge pipe 50 which is also connected to the water diversion chamber B41. Further, the slag discharge pipe 50, the water pipe 42 and the main water inlet and outlet of the water diversion chamber B41 are connected together through a three-way solenoid valve. It can be understood that the grain recovery mechanism is also provided with a water pump which is connected to the slag discharge pipe 50 to realize rapid recovery of grains.

[0060] In addition, in this embodiment, the induced crystallization fluidized bed device is also provided with an auxiliary slag guiding mechanism, please continue to refer to the attached Figure 3 To Attachment Figure 5 As shown, the auxiliary slag guiding mechanism is provided with a partition 60 fixedly connected to the top sides of the plurality of receiving containers 20, a plurality of through openings 61 provided on the partition 60 and respectively corresponding to the through openings 61 penetrating the top sides of the plurality of receiving containers 20, and a plurality of slag guiding members 62 provided on the partition 60 and capable of guiding crystal grains to flow into the through openings 61; wherein the periphery of the partition 60 is also fixedly connected to the inner wall of the reaction container 1 without a gap.

[0061] Furthermore, the slag guide 62 is fixedly disposed on the upper side of the partition 60 and close to the through-hole 61 , and a side surface of the slag guide 62 facing the through-hole 61 is an inclined surface, so as to facilitate guiding the grains.

[0062] Next, the working method of the induced crystallization fluidized bed device is described.

[0063] The working method of the induced crystallization fluidized bed device described in this embodiment is:

[0064] S1: feeding seed crystals into the plurality of the receiving containers 20 through the feeding mechanism; wherein the seed crystals may be selected from any one of quartz sand, calcium fluoride, calcite, apatite, dolomite and hydroxy calcium phosphate (but not limited to the above six seed crystal materials);

[0065] S2: By means of the water distribution assembly and the medicine distribution assembly, waste water and medicine are simultaneously sprayed out from the first tube body 31 and the second tube body 32, and sprayed onto the upper part 300 of the functional part 30; at that time, the waste water and medicine are continuously cut and mixed by the plurality of cutting blocks 301 to obtain a uniform mixed liquid;

[0066] S3: By means of the pumping mechanism, the circulating liquid is pumped from the water collection area 10 to the fluidizing pipe 40, and then sprayed upward from the bottom of the receiving container 20 into the receiving container 20 and the crystallization area 11; it is understandable that when the circulating liquid is sprayed into the receiving container 20, it will act to make the seed crystals flow upward in a fluidized state, and the seed crystals in the fluidized state will fully contact and mix with the obtained mixed liquid before the lower part 302 of the functional part 30 during the rising process, and then flow upward together to the crystallization area 11 for crystallization; Note: "crystallization" refers to the fine calcium fluoride particles generated by the reaction of wastewater and reagents adhering to / depositing on the surface of the seed crystals, growing continuously and forming grains;

[0067] It is also understandable that during the rising process of the mixed material containing the seed crystal, the mixed liquid and the circulating liquid, liquid will enter the water collection area 10 through the filter to become the circulating liquid. Of course, the pumping mechanism will also continue to pump the circulating liquid in the water collection area 10 to the receiving container 20 / the crystallization area 11, that is, the circulation of the circulating liquid can play a role in regulating the supersaturation of the mixed liquid.

[0068] S4: When the grains grow to a grain size of about 1.5 mm, the grains are recovered by the grain recovery mechanism, thereby realizing calcium fluoride resource recovery.

[0069] To sum up, the induced crystallization fluidized bed device described in the utility model has a simple, reasonable and novel structure, and can realize the resource recovery of heavy metals (such as fluorine) in wastewater in the form of high-purity crystals (calcium fluoride particles), which effectively improves the resource recovery rate of heavy metals in wastewater, and thus effectively solves the problem of serious shortage of heavy metal resources (fluorite and other fluorine resources) in my country, and well meets market demand.

[0070] In the above description, many specific details are described to facilitate a full understanding of the present invention. However, the above description is only a preferred embodiment of the present invention. The present invention can be implemented in many other ways different from those described herein, so the present invention is not limited by the specific implementation disclosed above. At the same time, any person familiar with the technical field can make many possible changes and modifications to the technical solution of the present invention by using the methods and technical contents disclosed above without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the scope of protection of the technical solution of the present invention.

Claims

1. An induced crystallization fluidized bed device, characterized in that: include: The reaction container (1) has an inner cavity which is divided into a water collection area (10), a crystallization area (11) and a material distribution area (12) from top to bottom; a seed crystal feeding mechanism, which is provided with a receiving container (20) arranged in the material distribution area (12) and a feeding mechanism capable of feeding seed crystals into the receiving container (20); and the top side of the receiving container (20) is connected to the crystallization area (11); A mixed liquid feeding mechanism, comprising a functional part (30) built into the receiving container (20), a first tube (31) connected to an external wastewater supply device and suspended above the functional part (30), and a second tube (32) connected to an external drug supply device and inserted into the first tube (31); wherein the upper part (300) of the functional part (30) is provided with a plurality of cutting blocks (301) for cutting and mixing the wastewater and the drug sprayed on the functional part (30) to obtain a mixed liquid; and the lower part (302) of the functional part (30) can provide a contact surface for the seed crystal and the mixed liquid to fully contact and mix; a fluidizing mechanism, which is provided with a fluidizing pipe (40) connected to the bottom of the receiving container (20) and a pumping mechanism capable of connecting the fluidizing pipe (40) with the water collection area (10); circulating liquid is sprayed into the receiving container (20) through the fluidizing pipe (40), so that the crystal seeds in the receiving container (20) can be fluidized, and the crystal seeds in the fluidized state can be fully contacted and mixed with the mixed liquid, and then flow upward to the crystallization area (11) to form crystal grains; A crystal grain recovery mechanism is connected to the fluidizing pipe (40) and is capable of recovering the crystal grains.

2. The induced crystallization fluidized bed device according to claim 1, characterized in that: The storage containers (20) are configured in plurality and are arranged at intervals on the same horizontal plane of the material distribution area (12); Correspondingly, the functional component (30), the first tube body (31), the second tube body (32) and the fluidizing tube (40) are also configured in plurality and correspond one-to-one to the plurality of storage containers (20).

3. The induced crystallization fluidized bed device according to claim 1, characterized in that: The upper portion (300) of the functional part (30) is a structure that is narrow at the top and wide at the bottom, and the plurality of cutting blocks (301) are also structures that are narrow at the top and wide at the bottom, and are respectively arranged obliquely on the upper portion (300) of the functional part (30); The lower part (302) of the functional part (30) is a structure that is wide at the top and narrow at the bottom, and the surface of the lower part (302) of the functional part (30) is also a smooth plane.

4. The induced crystallization fluidized bed device according to claim 3, characterized in that: The upper part (300) and the lower part (302) of the functional part (30) are connected in the same plane and are arranged in a mirror-symmetrical manner, and the upper part (300) of the functional part (30) is a conical structure; The plurality of cutting blocks (301) are all quadrangular pyramid structures, and the plurality of cutting blocks (301) are arranged on the upper portion (300) of the functional component (30) to form a plurality of concentric circular rings.

5. The induced crystallization fluidized bed device according to claim 3, characterized in that: The upper part (300) and the lower part (302) of the functional part (30), and the plurality of cutting blocks (301) are an integrated structure; in addition, the functional part (30) is positioned and built into the storage container (20).

6. The induced crystallization fluidized bed device according to claim 2, characterized in that: A gap is formed between each of the first tube bodies (31) and the second tube body (32) therein, and the lower ends of the first tube body (31) and the second tube body (32) are flush with each other; In addition, the mixed liquid feeding mechanism is also provided with a water distribution component connected between the external wastewater supply equipment and the plurality of the first tube bodies (31) and capable of evenly distributing wastewater to the plurality of the first tube bodies (31), and a medicine distribution component connected between the external medicine supply equipment and the plurality of the second tube bodies (32) and capable of evenly distributing medicine to the plurality of the second tube bodies (32).

7. The induced crystallization fluidized bed device according to claim 2, characterized in that: The plurality of storage containers (20) are all hollow structures that are wide at the top and narrow at the bottom and open at the top. An auxiliary slag guiding mechanism is also provided, which comprises a partition (60) fixedly connected to the top sides of the plurality of receiving containers (20), a plurality of through openings (61) provided on the partition (60) and respectively corresponding to and penetrating the top sides of the plurality of receiving containers (20), and a plurality of slag guiding members (62) provided on the partition (60) and capable of guiding crystal grains to flow into the through openings (61); wherein the periphery of the partition (60) is also fixedly connected to the inner wall of the reaction container (1) without a gap.

8. The induced crystallization fluidized bed device according to claim 7, characterized in that: The slag guide member (62) is fixedly arranged on the upper side of the partition plate (60) and close to the through-hole (61), and a side surface of the slag guide member (62) facing the through-hole (61) is an inclined surface; In addition, the feeding mechanism is provided with a plurality of feeding branch pipes respectively corresponding to and connected to the plurality of storage containers (20), and a feeding air pipe (21) connected to the plurality of feeding branch pipes.

9. The induced crystallization fluidized bed device according to claim 2, characterized in that: The pumping mechanism is provided with a water distribution chamber B (41) connected to the plurality of fluidizing tubes (40), and a water pump connected through a water pipe (42) and connected between the water distribution chamber B (41) and the water collection area (10); The crystal grain recovery mechanism is provided with a slag discharge pipe (50) which is also connected to the water diversion chamber B (41).

10. The induced crystallization fluidized bed device according to claim 1, characterized in that: A filter is provided between the water collection area (10) and the crystallization area (11).

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