Preparation process of piperazine DTC fly ash curing chelating agent

Abstract

The invention discloses a preparation process of a piperazine DTC fly ash curing chelating agent, a mixing device is used, the mixing device comprises a main body unit, a stirring unit and a showering unit, and the specific process adopting the mixing device is as follows: preparation of a piperazine solution: preparing the piperazine solution with a certain concentration of 65-70% by using the mixing device; preparing a potassium hydroxide solution with the concentration of 45-55%; mixing the prepared piperazine solution and potassium hydroxide solution, dropwise adding carbon disulfide at the same time, adding a proper amount of alkaline substance to adjust the pH value to be more than 10, and enabling piperazine and potassium hydroxide to react to generate a compound with chelation; in the reaction process, the temperature of the mixture is controlled below 40 DEG C; when the hollow rod moves up and down, the piston plate is driven to move up and down, a solution in the hollow rod is extruded to be sprayed outwards through the spraying holes, powder on the top of the hollow rod and the top of the shell is washed, and it is guaranteed that materials are fully dissolved and mixed.

Description

Technical Field

[0001] The invention relates to the technical field of chelating agent preparation, in particular to a preparation process of a piperazine DTC fly ash solidification chelating agent. Background Art

[0002] Piperazine DTC fly ash solidification chelating agent is a chemical reagent used to treat fly ash containing heavy metals. Its main function is to fix or solidify harmful heavy metals in fly ash through chemical chelation, reduce the dissolution of heavy metals, and prevent them from entering the environment or infiltrating into groundwater. It is mainly used for the treatment of fly ash generated by coal-fired power plants and waste incineration plants, especially industrial waste containing heavy metals.

[0003] In the existing production process, materials need to be dissolved to prepare solutions, such as piperazine solutions and DTC solutions. In the process of preparing solutions, the materials are mostly mixed and dissolved by a stirring and mixing device. The existing devices mostly use a stirring rod to stir, mix and dissolve the materials when mixing and dissolving the materials. However, the stirring rod of a general mixing device can only stir and mix in a single direction at a fixed height, and the dissolution efficiency is low. In addition, in the early stage of adding the materials, a part of the powdered materials will adhere to the stirring rod and the top of the shell, and be located above the liquid surface of the solution, so that the materials adhered to the top during the stirring process cannot be dissolved, resulting in incomplete dissolution of the materials, which affects the production quality of the chelating agent. Summary of the invention

[0004] The purpose of this section is to summarize some aspects of embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and the invention title of this application to avoid blurring the purpose of this section, the specification abstract and the invention title, and such simplifications or omissions cannot be used to limit the scope of the present invention.

[0005] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0006] A preparation process of a piperazine-based DTC fly ash solidification chelating agent, which uses a mixing device, including a main unit, a stirring unit and a shower unit. The specific process of using the mixing device is as follows:

[0007] S1. Preparation of piperazine solution: dissolving piperazine in pure water, and using a mixing device to prepare a piperazine solution of a certain concentration of 65-70%;

[0008] S2. Preparation of potassium hydroxide solution: dissolving potassium hydroxide in pure water and using a mixing device to prepare a potassium hydroxide solution with a concentration of 45-55%;

[0009] S3, chelating agent mixing: the prepared piperazine solution and potassium hydroxide solution are mixed, carbon disulfide is added dropwise, and an appropriate amount of alkaline substance is added to adjust the pH value to above 10. Piperazine and potassium hydroxide react to generate a compound with chelating effect;

[0010] S4. Reaction temperature control: During the reaction, the temperature of the mixture is controlled below 40°C to promote the reaction of piperazine and potassium hydroxide and improve the activity and yield of the chelating agent;

[0011] The main unit comprises a fixing frame, a shell is fixedly arranged on the fixing frame, a feed hopper is fixedly connected to the shell, and a discharge pipe is fixedly connected to the bottom of the shell;

[0012] The stirring unit comprises a hollow rod, the hollow rod is movably inserted into the shell, a plurality of stirring rods are rotatably connected to the hollow rod, a self-rotating component is provided between the stirring rod and the shell, a movable component is provided at the bottom of the shell, and a driving component is provided at the top of the shell;

[0013] The shower unit comprises a plurality of vertical pipes, wherein the vertical pipes are arranged inside the shell, a plurality of shower holes are opened on the vertical pipes, a stamping assembly is arranged between the hollow rod and the vertical pipes, and a rotating assembly is arranged between the stirring rod and the vertical pipes.

[0014] As a preferred solution of the preparation process of a piperazine DTC fly ash solidification chelating agent described in the present invention, wherein: the self-rotating component includes a plurality of mounting rods, the mounting rods are slidably connected to the inner wall of the shell in the up and down directions, an annular bevel gear is fixedly connected to the plurality of mounting rods, a rotating bevel gear is fixedly connected to the stirring rod, the annular bevel gear is meshed with the rotating bevel gear, and the vertical pipe is rotatably inserted on the annular bevel gear.

[0015] As a preferred solution of the preparation process of the piperazine DTC fly ash solidification chelating agent described in the present invention, wherein: the self-rotating component also includes a plurality of stirring blades, and the plurality of stirring blades are arranged along the axis of the stirring rod.

[0016] As a preferred solution of the preparation process of a piperazine DTC fly ash solidification chelating agent described in the present invention, the movable component includes a vertical rod, the vertical rod is fixedly connected to the inner bottom wall of the shell, a movable groove is opened on the vertical rod, a round rod is fixedly connected to the inner wall of the hollow rod, the round rod extends into the movable groove, and the round rod cooperates with the movable groove.

[0017] As a preferred solution of the preparation process of a piperazine DTC fly ash solidification chelating agent described in the present invention, wherein: the driving component includes a mounting plate, the mounting plate is fixedly connected to a fixing frame, a motor is provided on the mounting plate, a rotating shaft is fixedly connected to the output end of the motor, a driving gear is fixedly connected to the bottom end of the rotating shaft, a driven gear is rotatably connected to the top wall of the shell, the driving gear is meshed with the driven gear, and the hollow rod is slidably inserted into the driven gear.

[0018] As a preferred solution of the preparation process of a piperazine DTC fly ash solidification chelating agent described in the present invention, wherein: the stamping assembly includes a piston plate, the piston plate is fixedly connected to the top of the vertical rod, the piston plate is in contact with the inner wall of the hollow rod, a plurality of water inlets are provided at the bottom of the hollow rod, a first ring sleeve is rotatably connected to the hollow rod, a plurality of first openings are provided on the hollow rod, a connecting pipe is fixedly connected to the first ring sleeve, a second ring sleeve is fixedly connected to the connecting pipe, a one-way valve is provided in one end of the connecting pipe close to the second ring sleeve, the vertical pipe is rotatably connected to the second ring sleeve, and a plurality of second openings are provided on the vertical pipe.

[0019] As a preferred solution of the preparation process of a piperazine DTC fly ash solidification chelating agent described in the present invention, the rotating assembly includes multiple push rods, multiple push rods are fixedly connected to the topmost rotating bevel gear, a third ring sleeve is fixedly connected to the vertical pipe, multiple cross bars are fixedly connected to the third ring sleeve, and the cross bars cooperate with the push rods.

[0020] As a preferred solution of the preparation process of the piperazine DTC fly ash solidification chelating agent of the present invention, a plurality of the shower holes are arranged around the vertical pipe, and the shower holes are arranged at multiple angles.

[0021] As a preferred solution of the preparation process of the piperazine DTC fly ash solidification chelating agent described in the present invention, wherein: the feed hopper is provided with a screw cover, and the screw cover is provided with anti-slip patterns.

[0022] As a preferred solution of the preparation process of the piperazine DTC fly ash solidification chelating agent described in the present invention, wherein: a solenoid valve is provided on the discharge pipe, and the solenoid valve is located on one side of the shell.

[0023] Beneficial effects of the present invention:

[0024] 1. When in use, add the material into the shell through the feed hopper, then start the motor to drive the stirring rod to rotate, stir and mix the material, and through the cooperation of the round rod and the movable groove, the hollow rod rotates and moves up and down at the same time, driving the stirring rod to rotate and move up and down at the same time, stirring the solutions at different heights to make the mixture more uniform.

[0025] 2. When the stirring rod rotates, the cooperation between the rotating bevel gear and the annular bevel gear makes the stirring rod rotate, driving the stirring blade to rotate, so as to fully mix the solution and the material, and achieve simultaneous stirring and mixing in the horizontal and vertical directions, so that the mixing of the materials is more uniform and sufficient.

[0026] 3. When the hollow rod moves up and down, it can drive the piston plate to move up and down, squeeze the solution in the hollow rod so that it sprays out through the flushing hole, and flush the hollow rod and the powder on the top of the shell. At the same time, when the hollow rod moves up and down, it can drive the vertical pipe to move up and down, and when the top stirring rod makes a circular motion, it drives the vertical pipe to rotate a certain angle, so that the vertical pipe can flush the hollow rod and the top of the shell more fully, ensuring the full dissolution and mixing of the materials. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0028] Figure 1 The process flow chart of the preparation process of a piperazine DTC fly ash solidification chelating agent proposed by the present invention;

[0029] Figure 2 It is a front structural schematic diagram of a mixing device used in a preparation process of a piperazine-based DTC fly ash solidification chelating agent proposed by the present invention;

[0030] Figure 3 for Figure 2 Schematic diagram of the local cross-section structure;

[0031] Figure 4 for Figure 3 Schematic diagram of the internal structure;

[0032] Figure 5 for Figure 4 Schematic diagram of the local structure;

[0033] Figure 6 for Figure 4 A schematic diagram of a partial cross-sectional structure;

[0034] Figure 7 for Figure 4 A schematic diagram of a partial cross-sectional structure;

[0035] Figure 8 for Figure 4 Schematic diagram of the local structure.

[0036] In the figure: 100, main unit; 101, fixed frame; 102, shell; 103, feed hopper; 104, discharge pipe; 105, solenoid valve; 200, stirring unit; 201, hollow rod; 202, stirring rod; 203, self-rotation assembly; 203a, mounting rod; 203b, annular bevel gear; 203c, rotating bevel gear; 203d, stirring blade; 204, movable assembly; 204a, vertical rod; 204b, movable groove; 204c, round rod; 205, driving assembly; 205a, Mounting plate; 205b, motor; 205c, rotating shaft; 205d, driving gear; 205e, driven gear; 300, shower unit; 301, vertical pipe; 302, shower hole; 303, stamping assembly; 303a, piston plate; 303b, water inlet; 303c, first ring sleeve; 303d, first opening; 303e, connecting pipe; 303f, second ring sleeve; 303g, second opening; 304, rotating assembly; 304a, push rod; 304b, third ring sleeve; 304c, cross bar. DETAILED DESCRIPTION

[0037] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0038] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0039] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0040] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention in detail, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0041] Reference Figure 1-8 The present invention provides a preparation process of a piperazine-based DTC fly ash solidification chelating agent, which uses a mixing device, including a main unit 100, a stirring unit 200 and a shower unit 300. The specific process of using the above mixing device is as follows:

[0042] S1. Preparation of piperazine solution: dissolving piperazine in pure water, and using a mixing device to prepare a piperazine solution of a certain concentration of 65-70%;

[0043] S2. Preparation of potassium hydroxide solution: dissolving potassium hydroxide in pure water and using a mixing device to prepare a potassium hydroxide solution with a concentration of 45-55%;

[0044] S3, chelating agent mixing: the prepared piperazine solution and potassium hydroxide solution are mixed, carbon disulfide is added dropwise, and an appropriate amount of alkaline substance is added to adjust the pH value to above 10. Piperazine and potassium hydroxide react to generate a compound with chelating effect;

[0045] S4. Reaction temperature control: During the reaction, the temperature of the mixture is controlled below 40°C to promote the reaction of piperazine and potassium hydroxide and improve the activity and yield of the chelating agent;

[0046] The main unit 100 includes a fixing frame 101, a housing 102 is fixedly arranged on the fixing frame 101, a feed hopper 103 is fixedly connected to the housing 102, and a discharge pipe 104 is fixedly connected to the bottom of the housing 102;

[0047] The stirring unit 200 includes a hollow rod 201, which is movably inserted into the shell 102, and a plurality of stirring rods 202 are rotatably connected to the hollow rod 201, and a plurality of annular sleeves are fixedly connected to the hollow rod 201, and the stirring rods 202 are rotatably connected to the annular sleeves, and a self-rotating component 203 is provided between the stirring rod 202 and the shell 102, a movable component 204 is provided at the bottom of the shell 102, and a driving component 205 is provided at the top of the shell 102;

[0048] The shower unit 300 includes a plurality of vertical pipes 301 , which are disposed inside the housing 102 . A plurality of shower holes 302 are formed on the vertical pipes 301 . A stamping assembly 303 is disposed between the hollow rod 201 and the vertical pipes 301 . A rotating assembly 304 is disposed between the stirring rod 202 and the vertical pipes 301 .

[0049] Among them, the rotation component 203 includes a plurality of mounting rods 203a, which are slidably connected to the inner wall of the shell 102 in the up and down directions, and a ring-shaped bevel gear 203b is fixedly connected to the plurality of mounting rods 203a. A rotating bevel gear 203c is fixedly connected to the stirring rod 202, and the ring-shaped bevel gear 203b is meshed with the rotating bevel gear 203c. The vertical pipe 301 is rotated and inserted on the ring-shaped bevel gear 203b, so that when the hollow rod 201 rotates, it can drive the stirring rod 202 to make a circular motion, and the rotating bevel gear 203c makes a circular motion. The stirring rod 202 rotates by the cooperation of the rotating bevel gear 203c and the ring-shaped bevel gear 203b.

[0050] Furthermore, the self-rotating component 203 also includes a plurality of stirring blades 203d, and the plurality of stirring blades 203d are arranged along the axis of the stirring rod 202, so that when the stirring rod 202 rotates, the stirring blades 203d can be driven to rotate, and the materials are mixed in the vertical direction, so that the materials are fully mixed.

[0051] Furthermore, the movable component 204 includes a vertical rod 204a, which is fixedly connected to the inner bottom wall of the shell 102. A movable groove 204b is provided on the vertical rod 204a. A round rod 204c is fixedly connected to the inner wall of the hollow rod 201, and the round rod 204c extends into the movable groove 204b. The round rod 204c cooperates with the movable groove 204b, so that when the hollow rod 201 rotates, the round rod 204c can be driven to make a circular motion. Through the cooperation of the round rod 204c and the movable groove 204b, the hollow rod 201 rotates and moves up and down at the same time.

[0052] Furthermore, the driving assembly 205 includes a mounting plate 205a, which is fixedly connected to the fixing frame 101. A motor 205b is provided on the mounting plate 205a. A rotating shaft 205c is fixedly connected to the output end of the motor 205b. A driving gear 205d is fixedly connected to the bottom end of the rotating shaft 205c. A driven gear 205e is rotatably connected to the top wall of the shell 102. The driving gear 205d is meshed with the driven gear 205e. The hollow rod 201 is slidably inserted into the driven gear 205e, so that when the motor 205b is started, the rotating shaft 205c can be driven to rotate, so that the driving gear 205d drives the driven gear 205e to rotate, and the hollow rod 201 rotates.

[0053] Furthermore, the stamping assembly 303 includes a piston plate 303a, which is fixedly connected to the top of the vertical rod 204a, and the piston plate 303a is in contact with the inner wall of the hollow rod 201. The bottom of the hollow rod 201 is provided with a plurality of water inlets 303b, and the hollow rod 201 is rotatably connected with a first ring sleeve 303c, and the hollow rod 201 is provided with a plurality of first openings 303d, and the first ring sleeve 303c is fixedly connected with a connecting pipe 303e, and the connecting pipe 303e is fixedly connected with a second ring sleeve 303f, and the connecting pipe 303 A one-way valve is provided in one end of the hollow rod 201 near the second ring sleeve 303f, and the vertical pipe 301 is rotatably connected to the second ring sleeve 303f. A plurality of second openings 303g are provided on the vertical pipe 301, so that when the hollow rod 201 moves up and down, the piston plate 303a can be driven to move up and down. When the piston plate 303a moves below the water inlet 303b, the external solution enters the hollow rod 201 through the water inlet 303b. When the piston plate 303a moves upward, the solution in the hollow rod 201 can be squeezed to make it gush outward through the shower hole 302.

[0054] Furthermore, the rotating assembly 304 includes multiple push rods 304a, and the multiple push rods 304a are fixedly connected to the top rotating bevel gear 203c. The vertical pipe 301 is fixedly connected to a third ring sleeve 304b, and the third ring sleeve 304b is fixedly connected to multiple cross bars 304c. The cross bars 304c cooperate with the push rods 304a. When the stirring rod 202 makes a circular motion, it drives the rotating bevel gear 203c to make a circular motion, so that the rotating bevel gear 203c rotates, driving the push rods 304a to rotate. When the push rods 304a move to the third ring sleeve 304b with the stirring rod 202, the cross bars 304c are pushed by the push rods 304a, driving the vertical pipe 301 to rotate a certain angle.

[0055] Furthermore, a plurality of flushing holes 302 are arranged around the vertical pipe 301, and the flushing holes 302 are arranged at multiple angles, so that when the solution is flushed out through the flushing holes 302, it can flush the hollow rod 201 and the top of the shell 102 at multiple angles, ensuring that the mixing is more sufficient and uniform.

[0056] Furthermore, the feed hopper 103 is provided with a screw cap, and the screw cap is provided with anti-slip patterns to facilitate sealing of the feed hopper 103 during processing.

[0057] Furthermore, a solenoid valve 105 is provided on the discharge pipe 104 , and the solenoid valve 105 is located on one side of the housing 102 , so that the user can control the discharge of the solution through the solenoid valve 105 .

[0058] During use, materials are added into the housing 102 through the feed hopper 103, and then the motor 205b is started to drive the rotating shaft 205c to rotate, so that the driving gear 205d drives the driven gear 205e to rotate, so that the hollow rod 201 rotates, and drives the stirring rod 202 to rotate, so as to stir and mix the materials. At the same time, when the hollow rod 201 rotates, it can drive the round rod 204c to make a circular motion. Through the cooperation of the round rod 204c and the movable groove 204b, the hollow rod 201 rotates and moves up and down at the same time, bringing The stirring rod 202 rotates and moves up and down at the same time, stirring the solutions at different heights, so that the mixture is more uniform; when the stirring rod 202 rotates, the rotating bevel gear 203c makes a circular motion, and the stirring rod 202 rotates by the cooperation of the rotating bevel gear 203c and the annular bevel gear 203b, driving the stirring blade 203d to rotate, so that the solution and the material are fully mixed, and the mixing is achieved in the horizontal and vertical directions at the same time, so that the mixing of the materials is more uniform and sufficient; when the hollow rod 201 moves up and down When the piston plate 303a moves, it can drive the piston plate 303a to move up and down. When the piston plate 303a moves to the bottom of the water inlet 303b, the external solution enters the hollow rod 201 through the water inlet 303b. When the piston plate 303a moves upward, it can squeeze the solution in the hollow rod 201 to make it gush outward through the flushing hole 302, and wash the hollow rod 201 and the powder on the top of the shell 102. At the same time, when the hollow rod 201 moves up and down, it can drive the standpipe 301 to move up and down, and the hollow rod 201 and the top of the shell 102 The stirring rod 202 at the top performs a circular motion, which drives the rotating bevel gear 203c to perform a circular motion, so that the rotating bevel gear 203c rotates, and drives the push rod 304a to rotate. When the push rod 304a moves to the third ring sleeve 304b with the stirring rod 202, the push rod 304a pushes the cross bar 304c, and drives the vertical pipe 301 to rotate a certain angle, so that the vertical pipe 301 can more fully rinse the hollow rod 201 and the top of the shell 102, thereby ensuring that the materials are fully dissolved and mixed.

[0059] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present invention may be modified or replaced by equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should all be included in the scope of the claims of the present invention.

Claims

1. A process for preparing a piperazine-based DTC fly ash solidification chelating agent, which uses a mixing device, including a main unit (100), a stirring unit (200) and a shower unit (300), characterized in that: The specific process of using the above mixing device is as follows: S1. Preparation of piperazine solution: dissolving piperazine in pure water, and using a mixing device to prepare a piperazine solution of a certain concentration of 65-70%; S2. Preparation of potassium hydroxide solution: dissolving potassium hydroxide in pure water and using a mixing device to prepare a potassium hydroxide solution with a concentration of 45-55%; S3, chelating agent mixing: the prepared piperazine solution and potassium hydroxide solution are mixed, carbon disulfide is added dropwise, and an appropriate amount of alkaline substance is added to adjust the pH value to above 10. Piperazine and potassium hydroxide react to generate a compound with chelating effect; S4. Reaction temperature control: During the reaction, the temperature of the mixture is controlled below 40°C to promote the reaction of piperazine and potassium hydroxide and improve the activity and yield of the chelating agent; The main unit (100) comprises a fixing frame (101), a shell (102) is fixedly arranged on the fixing frame (101), a feed hopper (103) is fixedly connected to the shell (102), and a discharge pipe (104) is fixedly connected to the bottom of the shell (102); The stirring unit (200) comprises a hollow rod (201), wherein the hollow rod (201) is movably inserted into the shell (102), a plurality of stirring rods (202) are rotatably connected to the hollow rod (201), a self-rotating component (203) is provided between the stirring rod (202) and the shell (102), a movable component (204) is provided at the bottom of the shell (102), and a driving component (205) is provided at the top of the shell (102); The shower unit (300) comprises a plurality of vertical pipes (301), wherein the vertical pipes (301) are arranged inside a shell (102), a plurality of shower holes (302) are opened on the vertical pipes (301), a stamping assembly (303) is arranged between the hollow rod (201) and the vertical pipes (301), and a rotating assembly (304) is arranged between the stirring rod (202) and the vertical pipes (301).

2. The preparation process of a piperazine DTC fly ash solidification chelating agent according to claim 1, characterized in that: The self-rotating assembly (203) comprises a plurality of mounting rods (203a), wherein the mounting rods (203a) are slidably connected to the inner wall of the housing (102) in the up-down direction, and an annular bevel gear (203b) is fixedly connected to the plurality of mounting rods (203a), and a rotating bevel gear (203c) is fixedly connected to the stirring rod (202), and the annular bevel gear (203b) is meshed with the rotating bevel gear (203c), and the vertical pipe (301) is rotatably inserted into the annular bevel gear (203b).

3. The preparation process of a piperazine DTC fly ash solidification chelating agent according to claim 2, characterized in that: The self-rotating component (203) further comprises a plurality of stirring blades (203d), wherein the plurality of stirring blades (203d) are arranged along the axis of the stirring rod (202).

4. The preparation process of a piperazine DTC fly ash solidification chelating agent according to claim 3, characterized in that: The movable assembly (204) comprises a vertical rod (204a), the vertical rod (204a) is fixedly connected to the inner bottom wall of the shell (102), a movable groove (204b) is provided on the vertical rod (204a), a round rod (204c) is fixedly connected to the inner wall of the hollow rod (201), the round rod (204c) extends into the movable groove (204b), and the round rod (204c) cooperates with the movable groove (204b).

5. The preparation process of a piperazine DTC fly ash solidification chelating agent according to claim 4, characterized in that: The driving assembly (205) comprises a mounting plate (205a), wherein the mounting plate (205a) is fixedly connected to a fixing frame (101), a motor (205b) is arranged on the mounting plate (205a), a rotating shaft (205c) is fixedly connected to the output end of the motor (205b), a driving gear (205d) is fixedly connected to the bottom end of the rotating shaft (205c), a driven gear (205e) is rotatably connected to the top wall of the housing (102), the driving gear (205d) is meshed with the driven gear (205e), and the hollow rod (201) is slidably inserted into the driven gear (205e).

6. The preparation process of a piperazine DTC fly ash solidification chelating agent according to claim 5, characterized in that: The punching assembly (303) comprises a piston plate (303a), wherein the piston plate (303a) is fixedly connected to the top end of the vertical rod (204a), the piston plate (303a) is in contact with the inner wall of the hollow rod (201), a plurality of water inlets (303b) are provided at the bottom of the hollow rod (201), a first ring sleeve (303c) is rotatably connected to the hollow rod (201), a plurality of first openings (303d) are provided on the hollow rod (201), a connecting pipe (303e) is fixedly connected to the first ring sleeve (303c), a second ring sleeve (303f) is fixedly connected to the connecting pipe (303e), a one-way valve is provided in one end of the connecting pipe (303e) close to the second ring sleeve (303f), the vertical pipe (301) is rotatably connected to the second ring sleeve (303f), and a plurality of second openings (303g) are provided on the vertical pipe (301).

7. The process for preparing a piperazine DTC fly ash solidification chelating agent according to claim 6, characterized in that: The rotating assembly (304) includes a plurality of push rods (304a), and the plurality of push rods (304a) are fixedly connected to the uppermost rotating bevel gear (203c). The vertical pipe (301) is fixedly connected to a third ring sleeve (304b), and the third ring sleeve (304b) is fixedly connected to a plurality of cross bars (304c), and the cross bars (304c) cooperate with the push rods (304a).

8. The process for preparing a piperazine DTC fly ash solidification chelating agent according to claim 7, characterized in that: A plurality of the shower holes (302) are arranged around the vertical pipe (301), and the shower holes (302) are arranged at multiple angles.

9. The process for preparing a piperazine DTC fly ash solidification chelating agent according to claim 8, characterized in that: The feed hopper (103) is provided with a rotary cover, and the rotary cover is provided with anti-slip patterns.

10. The process for preparing a piperazine DTC fly ash solidification chelating agent according to claim 9, characterized in that: The discharge pipe (104) is provided with a solenoid valve (105), and the solenoid valve (105) is located on one side of the housing (102).

Images