Synthesis processing technology and device of polyaluminum ferric chloride

Abstract

The invention discloses a synthesis processing technology and device of polyaluminum ferric chloride. The device specifically comprises a fixed sleeve and a material conveying mechanism, and the fixed sleeve comprises an outer cylinder body, a middle cylinder body and an inner cylinder body which are coaxially arranged from outside to inside in a sleeving mode; according to the invention, the fixed sleeve structure which is sequentially sleeved and distributed from outside to inside is adopted, the fixed sleeve structure is provided with the outer cavity, the middle cavity and the inner cavity, and the outer material turning assembly, the middle material turning assembly and the inner material turning assembly which synchronously rotate are used for realizing spiral path rotary distributed introduction of reactants from outside to inside, so that the dispersion surface of reactant introduction is expanded, and the reaction efficiency is improved; in addition, an inner feeding port and a discharging port are formed in the upper direction and the lower direction of the inner barrel body respectively, the reactants guided into the inner cavity from the inner feeding port are rotated through the inner material turning assembly, then continuously guided out through the discharging port again and mixed with the reactants fed subsequently, and therefore a combined type circulation mode combining outer circulation and inner circulation is achieved. The synthesis effect is improved.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment agent processing, and more specifically to a synthesis processing technology and device for polyaluminium ferric chloride. Background Art

[0002] Polyaluminium ferric chloride is an inorganic polymer coagulant formed by the coagulation and hydrolysis of aluminium salt and iron salt. It combines the advantages of aluminium salt and iron salt respectively and has a particularly significant effect on the purification of high turbidity water and low-temperature and low-turbidity water. It is widely used in tap water and sewage treatment.

[0003] After searching, it is found that patent number CN104229903A discloses "Method for preparing polyaluminium ferric chloride from iron-containing waste acid liquid and aluminium ash". Iron-containing waste acid liquid and aluminium ash are used to embody the comprehensive utilization effect of waste and waste. However, during the synthesis process, aluminium ash and iron-containing waste acid liquid are respectively added slowly and continuously to the reaction container by the aluminium ash spiral conveying mechanism and the iron-containing waste acid liquid introduction interface. The stirring and mixing are only carried out by the stirring shaft in the reaction container, which leads to slow reaction and long synthesis time.

[0004] Another example is patent number CN108975413B which discloses "A Polyaluminium Ferric Chloride Joint Production Group", which uses an obliquely arranged reactor to greatly enhance the mud-water separation effect, and an outer liquid reactor and an inner material reactor are arranged in a sleeve manner, so that when the inner material reactor is loaded with the reaction material, it can continuously react with the reactants at the maximum contact degree during the rotation process, but a number of through holes are arranged on the inner material reactor, and hydrochloric acid will penetrate into the inner material reactor through the through holes for continuous reaction. The large particles of waste residue produced by the reaction will remain in the inner material reactor, and the particles will sink to the bottom of the outer liquid reactor, and the hydrochloric acid will also quickly fall into the bottom of the outer liquid reactor through the through holes. The reactants gathered at the bottom of the outer liquid reactor are in a relatively static state, affecting the synthesis effect of the reactants.

[0005] Therefore, we propose a synthetic processing technology and device for polyaluminium ferric chloride in view of the above problems. Summary of the invention

[0006] The purpose of the present invention is to solve the problem that it is difficult to achieve rapid and uniform mixing of reactants, and to provide a synthetic processing technology and device for polyaluminium ferric chloride compared with the prior art.

[0007] The object of the present invention can be achieved by the following technical scheme: a synthetic processing device of polyaluminium ferric chloride, comprising a fixed sleeve installed on a base and a feeding mechanism installed on one side of the top of the fixed sleeve, the fixed sleeve comprising an outer cylinder, a middle cylinder and an inner cylinder coaxially sleeved from outside to inside, both ends of the middle cylinder and the inner cylinder penetrate to the outside of both ends of the outer cylinder, and the middle cylinder and the inner cylinder divide the internal space of the outer cylinder into an outer cavity, a middle cavity and an inner cavity; An external feed port for adding reactants is provided on one side of the upper end of the outer cylinder, a feed port for connecting the outer cavity and the middle cavity is provided on the end wall of the upper end of the middle cylinder away from the external feed port, and an internal feed port and a feed port for connecting the middle cavity and the inner cavity are provided on opposite sides of the upper and lower ends of the inner cylinder respectively; The outer cavity, middle cavity and inner cavity are respectively rotationally driven to install an outer material turning assembly, a middle material turning assembly and an inner material turning assembly. The outer material turning assembly and the middle material turning assembly are rotationally driven in opposite directions, while the middle material turning assembly and the inner material turning assembly are rotationally driven in the same direction. The bottom end wall of the inner cylinder is fixedly connected to a drainage pipe extending outward, and the drainage pipe is externally connected to a sedimentation tank.

[0008] Furthermore, the feeding mechanism includes an aluminum ash hopper and a feed box which is embedded in the external feed port and open at the lower end. The feed box is equipped with an inlet pipe for conveying iron-containing waste acid liquid. The bottom end of the aluminum ash hopper is connected to a diverter box through a spiral conveying pipe, and the diverter box is tilted downward and penetrates into the interior of the feed box.

[0009] Furthermore, the diverter box is a triangular structure whose width gradually increases toward one side of the feed box, and a plurality of radially distributed diverter grooves are provided inside the diverter box. The end wall of the diverter box located on the inner side of the feed box is provided with a plurality of jet grooves connected to the diverter grooves and opened at the upper and lower sides.

[0010] Furthermore, the outward turning material assembly includes an outer rotating ring rotatably mounted on the outer walls at both ends of the middle cylinder and movably sealed with the inner wall of the outer cavity, and outward turning material pieces movably fitted with the inner and outer walls of the inner cavity are distributed in an annular manner between a pair of the outer rotating rings.

[0011] Furthermore, the middle turning material assembly includes a middle rotating ring which is rotatably mounted on the outer walls of the front and rear ends of the inner cylinder and is movably sealed and connected to the inner wall of the middle cavity. A plurality of inner turning material pieces which are movably fitted to the inner wall of the middle cavity are distributed in an annular manner between a pair of the middle rotating rings.

[0012] Furthermore, the inner turning material assembly includes a transmission shaft rotatably mounted with the axis of the inner cylinder, and a plurality of inner turning material sheets movably fitted with the outer wall of the inner cavity are distributed annularly on the outer end wall of the transmission shaft.

[0013] Optionally, the inner wall of the middle cylinder is also fixedly installed with a guide plate with a material discharge space reserved between the inner wall and the guide plate, the upper end of the guide plate is provided with an arc-shaped guide plate extending above the material distribution port and fixed to the inner wall of the middle cylinder, and the lower end of the guide plate extends below the material discharge port.

[0014] Optionally, the inward-turned material piece includes a positioning piece fixed on the inner wall of the inner cylinder, the outer end of the positioning piece is movably sleeved with a movable piece in contact with the inner wall of the middle cylinder, a movable groove for the movement of the positioning piece is opened inside the movable piece, and the inner wall of the movable groove and the outer end of the positioning piece are connected by a plurality of compression springs.

[0015] The present invention also provides a synthetic process for polyaluminium ferric chloride, comprising the following steps: Step 1: feeding, the feeding mechanism distributes the aluminum ash and the waste iron acid solution into the fixed sleeve; Step 2: After mixing, aluminum ash and waste iron acid are dispersed into the fixed sleeve, the reactants are introduced into the interior in a spiral path from the outside to the inside by relying on the outer turning material component, the middle turning material component and the inner turning material component, and the material is circulated up and down inside to achieve efficient synthesis of the reactants; Step 3: precipitation. After the reaction, the reactant liquid in the inner cavity is pumped into the precipitation tank through the drainage pipe, and a precipitation aid is added, accompanied by stirring, and then the mixture is allowed to stand for stratification, and the supernatant is extracted to obtain polyaluminium ferric chloride.

[0016] Compared with the prior art, the advantages of the present invention are: (1) This scheme adopts a fixed sleeve structure that is sequentially sleeved and distributed from the outside to the inside. The fixed sleeve structure is provided with an outer cavity, a middle cavity and an inner cavity. By relying on the synchronous rotation of the outer turning material component, the middle turning material component and the inner turning material component, the reactants are introduced in a distributed manner from the outside to the inside in a spiral path, which not only expands the dispersion surface of the reactant circulation introduction, but also increases the dispersed shear force on the reactants. In addition, an inner feed port and a discharge port are respectively opened in the upper and lower directions of the inner cylinder. The reactants introduced into the inner cavity from the inner feed port are continuously discharged from the discharge port again after the inner turning material component rotates, and are mixed with the reactants added subsequently. In this way, the reactants can be mixed in multiple cycles, the synthesis effect is improved, and the reaction time is shortened.

[0017] (2) This scheme adds a feeding mechanism at the top of the outer cylinder body to facilitate the efficient dispersion of the reactants when they are added. A spiral conveying pipe is used to continuously transport aluminum ash into the diversion box. The aluminum ash is diverted downward toward the end of the jet trough through multiple diversion troughs. In this process, multiple nozzles spray iron waste acid liquid toward the jet trough. The iron waste acid liquid disperses the aluminum ash and falls into the outer cavity through the external feed port. During the reactant transportation process, the iron waste acid liquid and the aluminum ash are efficiently dispersed, which is beneficial to the subsequent reaction of the reactants in the fixed sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of the feeding mechanism of the present invention when it is detached from the fixed sleeve; Figure 3 A top cross-sectional view of the diverter box of the present invention; Figure 4 It is a cross-sectional view of the junction between the diverter box and the feed box of the present invention; Figure 5 is a cross-sectional view of an end portion of a fixed sleeve of the present invention; Figure 6It is a schematic diagram of the internal structure of the fixed sleeve of the present invention; Figure 7 is a cross-sectional view of an end portion of a fixed sleeve of the present invention; Figure 8 It is a structural schematic diagram of the outer turning material assembly of the present invention; Fig. 9 It is a structural schematic diagram of the middle material turning component of the present invention; Fig.10 It is an end cross-sectional view of the present invention when working.

[0019] Description of the numbers in the figure: 1. Outer cylinder; 101. External feed port; 2. Middle cylinder; 201. Distributor port; 3. Inner cylinder; 301. Internal feed port; 302. Dropping port; 4. Spiral conveying pipe; 5. Diverter box; 501. Diverter slot; 502. Jet slot; 6. Feed box; 7. Liquid inlet pipe; 701. Nozzle; 8. External rotating ring; 801. Gear ring 1; 9. Outward-turned sheet; 10. Gear 1; 11. Middle rotating ring; 111. Gear ring 2; 12. Inward-turned sheet; 121. Fixed sheet; 122. Movable sheet; 13. Gear 2; 14. Material guide sheet; 15. Transmission shaft; 16. Inward-turned sheet; 17. Driving motor; 18. Drain pipe; 19. Sedimentation tank. DETAILED DESCRIPTION

[0020] The following will combine the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all the embodiments. All other embodiments obtained by ordinary technicians in this field without creative work based on the embodiments of the present invention belong to the scope of protection of the present invention.

[0021] Example 1: The present invention discloses a synthetic processing device for polyaluminium ferric chloride, please refer to Figure 1 , Figure 2 , including a fixed sleeve installed on a base and a feeding mechanism installed on one side of the top of the fixed sleeve, the fixed sleeve includes an outer cylinder 1, a middle cylinder 2 and an inner cylinder 3 which are coaxially sleeved from outside to inside, and both ends of the middle cylinder 2 and the inner cylinder 3 penetrate to the outside of both ends of the outer cylinder 1; See also Figure 5 , Figure 6The middle cylinder 2 and the inner cylinder 3 divide the internal space of the outer cylinder 1 into an outer cavity, a middle cavity and an inner cavity. An external feed port 101 for adding reactants is provided on one side of the upper end of the outer cylinder 1. A feed port 201 connecting the outer cavity and the middle cavity is provided on the end wall of the upper end of the middle cylinder 2 away from the external feed port 101. An inner feed port 301 and a feed port 302 connecting the middle cavity and the inner cavity are provided on the opposite sides of the upper and lower ends of the inner cylinder 3, respectively, to divide the large-volume outer cylinder 1 into an outer cavity, a middle cavity and an inner cavity arranged inside and outside, thereby increasing the number of reaction cavities.

[0022] The outer cavity, the middle cavity and the inner cavity are respectively rotationally driven to install an outer turning material component, a middle turning material component and an inner turning material component, wherein the outer turning material component and the middle turning material component are rotationally driven in opposite directions, and the middle turning material component and the inner turning material component are rotationally driven in the same direction.

[0023] See also Figure 7-Figure 9 The outer turning material component includes an outer rotating ring 8 which is rotatably installed on the outer walls of the front and rear ends of the middle cylinder 2 and movably sealed with the inner wall of the outer cavity, and a pair of outer rotating rings 8 are annularly distributed with outer turning material pieces 9 which are movably fitted with the inner and outer walls of the inner cavity. The middle turning material component includes a middle rotating ring 11 which is rotatably installed on the outer walls of the front and rear ends of the inner cylinder 3 and movably sealed with the inner wall of the middle cavity, and a pair of middle rotating rings 11 are annularly distributed with a plurality of inner turning material pieces 12 which are movably fitted with the inner wall of the middle cavity. The inner turning material component includes a transmission shaft 15 which is rotatably installed with the axis of the inner cylinder 3, and a plurality of inner turning material pieces 16 which are movably fitted with the outer wall of the inner cavity are annularly distributed on the outer end wall of the transmission shaft 15.

[0024] The rotation modes of the outer turning material assembly, the middle turning material assembly and the inner turning material assembly are described in detail. The outer ends of a pair of outer rotating rings 8 are penetrated to the outside of the outer cylinder 1 and fixedly sleeved with a gear ring 801. A pair of gears 10 are rotatably installed on both sides of the base and are respectively engaged with the bottom end walls of the gear ring 801 on both sides. The outer ends of a pair of middle rotating rings 11 are fixedly connected with a gear ring 2 111 located on the inner side of the middle cylinder 2. A pair of gears 2 13 are rotatably installed on both sides of the base and are respectively engaged with the bottom end walls of the gear ring 2 111 on both sides. The two gears 10 and the two transmission shafts 15 arranged at the front and rear are fixedly connected by a linkage shaft. The transmission shaft 15 and one end of the linkage shaft pass through the rear end of the base. A driving motor 17 for linkage driving the transmission shaft 15 and the linkage shaft is installed at the rear end of the base. A meshing gear set for connecting the driving shaft of the driving motor 17, the transmission shaft 15 and the linkage shaft is embedded in the rear end of the base, so that the same driving motor 17 can drive the outer turning material assembly and the middle turning material assembly to rotate in the opposite direction, and drive the middle turning material assembly and the inner turning material assembly to rotate in the same direction.

[0025] See also Fig.10Under the high impact of the waste iron acid liquid, the aluminum ash is efficiently dispersed into the outer cavity of the outer cylinder 1, and is rotated along the outer cavity for one circle by a plurality of rotating outer flipping sheets 9, and is distributed into the inner cavity through the material distribution port 201. By relying on the synchronously rotating outer flipping material assembly, middle flipping material assembly and inner flipping material assembly, the reactants are introduced in a spiral path from the outside to the inside in a distributed manner, which not only expands the dispersion surface of the reactant circulation introduction, but also increases the dispersed shear force on the reactant; In addition, an internal feed port 301 and a discharge port 302 are respectively provided in the upper and lower directions of the inner cylinder 3. The reactants introduced into the inner cavity through the internal feed port 301 are rotated by the inner turning assembly and then continuously discharged again through the discharge port 302 to be mixed with the reactants added subsequently, thereby realizing a composite circulation mode combining external circulation and internal circulation, improving the synthesis effect and shortening the reaction time.

[0026] Example 2: Based on Example 1, this example optimizes the internal circulation process of the reactants, as follows: See also Figure 5 and Fig. 9 , Fig.10 The inner wall of the middle cylinder 2 is also fixedly mounted with a guide piece 14 with a material discharge space reserved between the inner wall and the guide piece 14. The upper end of the guide piece 14 is provided with an arc-shaped guide piece extending above the material distribution port 201 and fixed to the inner wall of the middle cylinder 2. The lower end of the guide piece 14 extends to below the material discharge port 302. The inward-turned material sheet 12 includes a positioning sheet 121 fixed on the outer wall of the inner cylinder 3, and the outer end of the positioning sheet 121 is movably sleeved with a movable sheet 122 in contact with the inner wall of the middle cylinder 2, and a movable groove for the positioning sheet 121 to move is provided inside the movable sheet 122. The inner wall of the movable groove and the outer end of the positioning sheet 121 are connected by a plurality of compression springs, and the outer end of the movable sheet 122 is provided with a chamfered corner adapted to the arc-shaped guide sheet; A guide sheet 14 is added at the middle cavity to guide the reactants falling from the material distribution port 201 directly to the middle cavity, so that the reactants can impact and diffuse downward on the outer arc surface of the guide sheet 14 and mix with the reactants discharged from the drop port 302. Therefore, the inverted sheet 12 is set to be retractable. When the inverted sheet 12 rotates to the upper end of the guide sheet 14, the movable sheet 122 moves toward one end of the positioning sheet 121 under the pressure of the arc-shaped guide sheet to ensure that the inverted sheet 12 can smoothly move downward from the inner arc surface of the guide sheet 14. After running to the bottom end of the guide plate 14, the outer end of the movable plate 122 is reset outward under the action of the compression spring to contact the inner wall of the middle cylinder 2, so that after the front and rear reactants are mixed, the mixed reactants are rotated upward again and introduced into the inner cavity again through the inner feed port 301, so that the front and rear reactants are mixed in multiple cycles and the mixing reaction effect is improved.

[0027] Embodiment 3: This embodiment provides a detailed description of the feeding mechanism mentioned in Embodiment 1: See also Figure 2-Figure 5 The feeding mechanism includes an aluminum ash hopper and a feed box 6 which is embedded and installed on the external feed port 101 and has an opening at the lower end. The feed box 6 is provided with a liquid inlet pipe 7 for conveying the iron-containing waste acid liquid. The bottom end of the aluminum ash hopper is connected to a diverter box 5 through a spiral conveying pipe 4. The diverter box 5 is tilted downward and penetrates into the interior of the feed box 6. The diverter box 5 is a triangular structure with a width gradually increasing toward the side of the feed box 6. A plurality of radially distributed diverter slots 501 are provided inside the diverter box 5. A plurality of jet slots 502 connected to the diverter slots 501 and opened up and down are provided on the end wall of the diverter box 5 located inside the feed box 6. A plurality of nozzles 701 located above the jet slots 502 are distributed horizontally on the bottom end wall of the liquid inlet pipe 7. Aluminum ash is contained in an aluminum ash hopper, and a spiral conveying pipe 4 is used to continuously convey aluminum ash to the diversion box 5. The aluminum ash is diverted through multiple diversion grooves 501, and moves to the end of the jet groove 502 and falls toward the external feed port 101. In this process, iron waste acid liquid is sprayed toward the jet groove 502 through multiple nozzles 701. The iron waste acid liquid disperses the aluminum ash and falls into the outer cavity through the external feed port 101. During the reactant transportation process, the dispersion impact between the iron waste acid liquid and the aluminum ash is realized, thereby improving the dispersion degree of the reactants initially distributed in the outer cylinder 1.

[0028] Example 4: Based on the synthesis and processing device of the polyaluminium ferric chloride, a synthesis and processing process is also proposed, please refer to Fig.10 , including the following steps: Step 1: feeding, the feeding mechanism disperses aluminum ash and waste iron acid liquid into the fixed sleeve. In this process, the spiral conveying pipe 4 is used to continuously transport aluminum ash into the diversion box 5. The aluminum ash is diverted through multiple diversion grooves 501 and moves to the end of the jet groove 502 to fall into the external feed port 101. While the aluminum ash is being fed, the waste iron acid liquid is sprayed toward the jet groove 502 through multiple nozzles 701. The waste iron acid liquid disperses the aluminum ash and falls into the fixed sleeve through the external feed port 101 together. Step 2: After mixing, aluminum ash and waste iron acid are dispersed into the fixed sleeve, the reactants are distributed in a spiral path from outside to inside by relying on the outer turning material component, the middle turning material component and the inner turning material component, and are successively introduced into the outer cavity, the middle cavity and the inner cavity, and the materials are circulated up and down in the inner cavity and the middle cavity to realize a composite circulation mode combining external circulation and internal circulation; Step 3: precipitation. After the reaction, the inner cavity reactant liquid is pumped into the precipitation tank 19 through the drain pipe 18, and a precipitation aid is added, accompanied by stirring, and then the mixture is allowed to stand for stratification, and the supernatant is extracted to obtain polyaluminium ferric chloride.

[0029] In summary, a fixed sleeve structure is adopted which is sequentially sleeved and distributed from outside to inside, and the fixed sleeve structure is provided with an outer cavity, a middle cavity and an inner cavity. By synchronously rotating the outer turning material component, the middle turning material component and the inner turning material component, the reactants are introduced in a distributed manner from outside to inside in a spiral path, which not only expands the dispersion surface of the reactants' circulation introduction, but also increases the dispersed shear force on the reactants; In addition, an inner feed port and a discharge port are respectively opened in the upper and lower directions of the inner cylinder body. The reactants introduced into the inner cavity through the inner feed port are rotated by the inner turning component and then continuously discharged from the discharge port again to be mixed with the subsequently added reactants, thereby realizing a composite circulation mode combining external circulation and internal circulation. The reactants are introduced into the middle cavity from the outer cavity after one rotation, which belongs to the external circulation; introduced into the inner cavity from the middle cavity and then discharged back to the middle cavity from the inner cavity, which belongs to the internal circulation. In this way, after the feeding is stopped, the cycle is repeated for many times to improve the synthesis effect and shorten the reaction time.

[0030] The above are only preferred specific implementation modes of the present invention; however, the protection scope of the present invention is not limited thereto; any technician familiar with the technical field within the technical scope disclosed by the present invention; any equivalent replacement or change based on the technical solution and improved concept of the present invention shall be covered within the protection scope of the present invention.

Claims

1. A synthetic processing device for polyaluminium ferric chloride, comprising a fixed sleeve mounted on a base and a feeding mechanism mounted on one side of the top of the fixed sleeve, characterized in that: The fixed sleeve comprises an outer cylinder (1), a middle cylinder (2) and an inner cylinder (3) which are coaxially sleeved from outside to inside, wherein the middle cylinder (2) and the inner cylinder (3) divide the internal space of the outer cylinder (1) into an outer cavity, a middle cavity and an inner cavity; An external feed port (101) for adding reactants is provided on one side of the upper end of the outer cylinder (1); a material distribution port (201) for connecting the outer cavity and the middle cavity is provided on the end wall of the upper end of the middle cylinder (2) away from the external feed port (101); and an internal feed port (301) and a material drop port (302) for connecting the middle cavity and the inner cavity are provided on opposite sides of the upper and lower ends of the inner cylinder (3); An outer material turning assembly, a middle material turning assembly and an inner material turning assembly are respectively installed in the outer cavity, the middle cavity and the inner cavity for rotational driving. The outer material turning assembly and the middle material turning assembly are driven for rotational driving in opposite directions, while the middle material turning assembly and the inner material turning assembly are driven for rotational driving in the same direction. A drainage pipe (18) is externally connected to the bottom end wall of the inner cylinder (3), and the drainage pipe (18) is externally connected to a sedimentation tank (19).

2. The synthetic processing device of a polyaluminium ferric chloride according to claim 1, characterized in that: The feeding mechanism comprises an aluminum ash hopper and a feed box (6) embedded in an external feed port (101) and open at the lower end; a liquid inlet pipe (7) for conveying iron-containing waste acid liquid is installed on the feed box (6); the bottom end of the aluminum ash hopper is connected to a diverter box (5) via a spiral conveying pipe (4); the diverter box (5) is tilted downward and penetrates into the interior of the feed box (6).

3. The synthetic processing device of a polyaluminium ferric chloride according to claim 2, characterized in that: The diverter box (5) is a triangular structure whose width gradually increases towards one side of the feed box (6), and a plurality of radially distributed diverter slots (501) are provided inside the diverter box (5), and a jet slot (502) with upper and lower openings is provided at the end of the diverter slot (501) located inside the feed box (6).

4. The synthetic processing device of a polyaluminium ferric chloride according to claim 1, characterized in that: The outer turning material assembly comprises an outer rotating ring (8) rotatably mounted on the outer walls of the front and rear ends of the middle cylinder (2) and movably sealed with the inner wall of the outer cavity, and an outer turning material sheet (9) movably fitted with the inner and outer walls of the inner cavity is distributed in an annular manner between a pair of the outer rotating rings (8).

5. The synthetic processing device of a polyaluminium ferric chloride according to claim 1, characterized in that: The middle turning material assembly comprises a middle rotating ring (11) rotatably mounted on the outer walls of the front and rear ends of the inner cylinder (3) and movably sealed with the inner wall of the middle cavity, and a plurality of inner turning material pieces (12) movably fitted with the inner wall of the middle cavity are distributed in an annular manner between a pair of the middle rotating rings (11).

6. The synthetic processing device of a polyaluminium ferric chloride according to claim 1, characterized in that: The inner turning material assembly comprises a transmission shaft (15) rotatably mounted on the axis of the inner cylinder (3), and a plurality of inner turning material sheets (16) movably fitted to the outer wall of the inner cavity are distributed annularly on the outer end wall of the transmission shaft (15).

7. The synthetic processing device of a polyaluminium ferric chloride according to claim 1, characterized in that: The inner wall of the middle cylinder (2) is also fixedly mounted with a guide piece (14) with a material discharge space reserved between the inner wall and the guide piece (14); the upper end of the guide piece (14) is provided with an arc-shaped guide piece extending above the material distribution opening (201) and fixed to the inner wall of the middle cylinder (2); the lower end of the guide piece (14) extends below the material discharge opening (302).

8. The synthetic processing device of polyaluminium ferric chloride according to claim 1, characterized in that: The inward-turned material piece (12) comprises a positioning piece (121) fixed on the outer wall of the inner cylinder (3); the outer end of the positioning piece (121) is movably sleeved with a movable piece (122) in contact with the inner wall of the middle cylinder (2); a movable groove for the positioning piece (121) to move is provided inside the movable piece (122); the inner wall of the movable groove and the outer end of the positioning piece (121) are connected via a plurality of compression springs.

9. A synthetic process of polyaluminium ferric chloride, using a synthetic process of polyaluminium ferric chloride as claimed in any one of claims 1 to 8, characterized in that: The steps include: Step 1: feeding, the feeding mechanism distributes the aluminum ash and the waste iron acid solution into the fixed sleeve; Step 2: After mixing, aluminum ash and waste iron acid are dispersed into the fixed sleeve, the reactants are introduced into the interior in a spiral path from the outside to the inside by relying on the outer turning material component, the middle turning material component and the inner turning material component, and the material is circulated up and down inside to achieve efficient synthesis of the reactants; Step 3: precipitation. After the reaction, the reactant liquid in the inner cavity is pumped into the precipitation tank (19) through the drainage pipe (18), a precipitation aid is added, and stirring is performed. Then, the mixture is allowed to stand for stratification, and the supernatant is extracted to obtain polyaluminium ferric chloride.

Images