Continuous micro-chemical synthesis equipment for ferrous oxalate and preparation method thereof

Abstract

This invention discloses a continuous microchemical synthesis device and preparation method for ferrous oxalate, comprising: a temperature control chamber with a fixed frame inside, a ring tube on the fixed frame, an inlet pipe and an outlet pipe spaced apart on the ring tube, and a flow-pushing ring evenly distributed around the circumference of the ring tube cavity; a control assembly on the fixed frame for controlling the movement of the flow-pushing rings; and a control valve on the outlet pipe; a first feed pipe located inside the temperature control chamber and connected to the inlet pipe, and a buffer assembly inside the first feed pipe; a second feed pipe connected to the cavity of the first feed pipe; and a discharge pipe located inside the temperature control chamber and connected to the outlet pipe.

Description

Technical Field

[0001] This invention relates to the field of ferrous oxalate preparation technology, specifically to a continuous microchemical synthesis equipment and preparation method for ferrous oxalate. Background Technology

[0002] In the field of chemical synthesis, traditional methods for synthesizing ferrous oxalate often employ batch reactors. This method has the following problems:

[0003] (1) The mixing efficiency is low. When the oxalic acid-ammonia solution and the ferrous sulfate solution are mixed in the reactor, they rely on mechanical stirring or natural diffusion, which makes it difficult to achieve millisecond-level uniform mixing. This results in large differences in local supersaturation, uneven crystal nucleus generation, and easy agglomeration or irregular particles.

[0004] (2) The residence time is wide, and there is back mixing in the batch reactor. The residence time of different batches of materials varies greatly, resulting in overlapping of the grain growth stages. Some grains grow excessively, while others do not react completely. The product has a wide particle size distribution (e.g., D50 fluctuation > 10%) and low tap density.

[0005] (3) Uneven heat and mass transfer, large volume of the vessel, large local heat transfer rate difference, easy to generate temperature gradient, affecting reaction rate and crystal morphology transformation; at the same time, the ferrous oxalate crystals generated by the reaction are easy to adhere to the vessel wall or stirring paddle, forming scale, reducing heat transfer efficiency and increasing cleaning cost.

[0006] (4) Difficulty in continuous production: Intermittent operation requires frequent feeding-discharging-cleaning, resulting in low production efficiency and difficulty in matching with downstream continuous filtration, washing and drying processes, which limits large-scale industrial application.

[0007] Therefore, it is necessary to provide equipment and methods for the continuous microchemical synthesis of ferrous oxalate to solve the problems mentioned in the background art. Summary of the Invention

[0008] To achieve the above objectives, the present invention provides the following technical solution: a continuous microchemical synthesis device for ferrous oxalate, comprising:

[0009] The temperature control box has a fixed frame inside, a ring tube on the fixed frame, an inlet pipe and an outlet pipe on the ring tube, and a push-flow ring component evenly distributed around the circumference of the ring tube cavity. The fixed frame has a control component for controlling the movement of the push-flow ring component, and a control valve is provided on the outlet pipe.

[0010] Feed pipe one is located inside the temperature control box and is connected to the inlet pipe. Feed pipe one is also equipped with a buffer assembly.

[0011] Inlet pipe two is connected to the cavity of inlet pipe one;

[0012] The discharge pipe is located inside the temperature control box and is connected to the outlet pipe.

[0013] Preferably, the jet ring comprises:

[0014] An internal ring is located in the cavity of the ring tube, and scraper rings that contact the wall of the ring tube are respectively provided at both ends of the ring opening;

[0015] The flow-driving ring fan is unidirectionally rotated and located in the middle of the inner ring wall.

[0016] Preferably, the scraper ring is rotatably connected to the inner ring, and the inner wall of the scraper ring is provided with guide fan blades.

[0017] Preferably, the control component includes:

[0018] Magnetic sheets are respectively located on the upper and lower ring surfaces of the inner ring;

[0019] The ring cover rotates on a fixed frame, and its upper and lower ring surfaces are respectively provided with magnetic blocks that attract the magnetic sheet;

[0020] The motor is located outside the temperature control box, and its output end has a drive wheel that contacts the inner wall of the ring cover.

[0021] Preferably, the annular wall of the ring cover is provided with a visual sensor for monitoring the reaction solution inside the annular tube cavity.

[0022] Preferably, the buffer component includes:

[0023] A cross ring is located inside the feed pipe;

[0024] The sleeve is coaxially mounted on the cross ring, and a compression chamber is provided at the end near the inlet pipe. A plunger rod is connected to the compression chamber, and the plunger rod is connected to the bottom of the compression chamber by a return spring.

[0025] Preferably, the plunger rod has a stirring fan blade on the outer wall of the end near the inlet pipe.

[0026] Preferably, the end of the column sleeve away from the inlet pipe has a rotatable dispersing spherical shell, and the column sleeve is also provided with a jet channel for connecting the dispersing spherical shell and the feed pipe. The outer spherical surface of the dispersing spherical shell is provided with jet holes, and the circumferential surface of the dispersing spherical shell near the wall of the feed pipe is provided with dispersing fan blades.

[0027] Preferably, the discharge pipe wall is equipped with a scraping screw.

[0028] A continuous microchemical synthesis method for preparing ferrous oxalate includes the following steps:

[0029] Step 1: Introduce the mixed solution of oxalic acid and ammonia water into the continuous phase feed pipe;

[0030] Step 2: Introduce the ferrous sulfate solution through the second dispersed phase feed pipe;

[0031] Step 3: Control the circumferential movement of the flow-distributing ring in the loop tube by controlling the control components, so that the flow-distributing ring and the reaction solution between the flow-distributing rings move;

[0032] Step 4: Monitor and judge the reaction status of the reaction solution between the push-flow rings in the loop. If it is within the reaction completion range, the control component adjusts the reaction solution between the corresponding push-flow rings to correspond with the outlet pipe, and opens the control valve to discharge it. If it is not judged that there is reaction solution in the loop within the reaction completion range, the control valve is in the closed state, and the buffer component buffers the continuously increasing solution in the feed pipe.

[0033] Compared with the prior art, the present invention provides a continuous microchemical synthesis device and preparation method for ferrous oxalate, which has the following beneficial effects:

[0034] 1. In this invention, the countercurrent injection through the jet holes of the dispersion spherical shell and the synergistic disturbance of the agitator / dispersion fan blades enable the oxalic acid-ammonia water mixture (continuous phase) and the ferrous sulfate solution (dispersed phase) to achieve millisecond-level uniform mixing within the feed pipe, instantly generating crystal nuclei and ensuring uniform initial crystal nuclei size. The separation effect of the pusher ring forms an independent "reaction chamber," and the control component drives the pusher ring to rotate clockwise, achieving an approximate "flat pusher flow" flow mode with a narrow residence time distribution, avoiding excessive crystal growth caused by backmixing, and ensuring uniform product particle size and consistent morphology.

[0035] 2. In this invention, the guide fan blades on the inner wall of the scraping ring rotate under the drive of the solution flow, continuously scraping away the crystals deposited on the inner wall of the ring tube, causing them to resuspend and preventing scaling. At the same time, the temperature control box precisely controls the temperature of the ring tube, which, together with the scraping action of the scraping ring, ensures uniform heat transfer between the tube wall and the solution, avoids local overheating or overcooling, and improves the crystal morphology conversion efficiency. The state of suspended particles in each reaction compartment is monitored in real time by a visual sensor, and the crystal size and reaction completion are judged by image analysis. When a compartment reaches the "complete reaction" range (such as particle size meeting the standard and morphology being qualified), the control component aligns the compartment with the outlet pipe, opens the control valve to discharge qualified slurry, and the compartments that do not meet the standard continue to circulate and age, avoiding excessive crystal growth and ensuring product purity and tap density.

[0036] 2. In this invention, the buffer assembly, through the compression and reset of the plunger rod and the return spring, temporarily increases the volume of the feed pipe to buffer the solution when the control valve is closed. When the control valve is open, the buffer solution is pushed into the ring pipe to ensure uninterrupted continuous feeding. The scraper blades of the discharge pipe rotate when the slurry flows to prevent crystal sedimentation and blockage of the pipe. The flow-pushing ring is driven to rotate counterclockwise by the control assembly. The flow-pushing ring fan rotates due to the resistance of the solution, loses its flow-pushing effect and transforms into a stirring blade, which strongly disturbs the solution in the ring pipe. This is suitable for scenarios where uniform nucleation is promoted in the early stage of the reaction or where enhanced mixing is required, thus improving process adaptability. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the continuous microchemical synthesis equipment for ferrous oxalate of the present invention.

[0038] Figure 2 This is a schematic diagram of the internal structure of the continuous microchemical synthesis equipment for ferrous oxalate of the present invention.

[0039] Figure 3 This is a schematic diagram of the control component structure of the present invention;

[0040] Figure 4 This is a schematic diagram of the propulsion ring structure of the present invention;

[0041] Figure 5 for Figure 3 Schematic diagram of a partial structure;

[0042] Figure 6 This is a schematic diagram of the buffer component structure of the present invention;

[0043] In the diagram: 1. Temperature control box; 2. Fixed frame; 3. Ring pipe; 4. Feed pipe one; 5. Feed pipe two; 6. Discharge pipe; 7. Flow-pushing ring; 8. Control assembly; 9. Control valve; 10. Buffer assembly; 31. Inlet pipe; 32. Outlet pipe; 71. Internal ring; 72. Scraper ring; 73. Flow-pushing ring fan; 74. Guide fan blade; 81. Magnetic sheet; 82. Ring cover; 83. Magnetic block; 84. Motor; 85. Drive wheel; 86. Vision sensor; 91. Scraper screw; 101. Cross ring; 102. Column sleeve; 103. Compression chamber; 104. Return spring; 105. Plunger rod; 106. Agitator fan blade; 107. Jet channel; 108. Dispersion sphere shell; 109. Jet hole; 1010. Dispersion fan blade. Detailed Implementation

[0044] Reference Figures 1-6 This invention provides a technical solution: a continuous microchemical synthesis device for ferrous oxalate, comprising:

[0045] Temperature control box 1, which has a fixed frame 2 inside, a ring pipe 3 on the fixed frame 2, an inlet pipe 31 and an outlet pipe 32 on the ring pipe 3, and a push-flow ring 7 evenly distributed around the circumference of the ring pipe 3. The fixed frame 2 is equipped with a control component 8 for controlling the movement of the push-flow ring 7, and a control valve 9 is provided on the outlet pipe 32.

[0046] Feed pipe 4 is located inside temperature control box 1 and connected to inlet pipe 31. Buffer assembly 10 is provided inside feed pipe 4.

[0047] Inlet pipe 25 is connected to the cavity of inlet pipe 14;

[0048] The discharge pipe 6 is located inside the temperature control box 1 and is connected to the outlet pipe 32.

[0049] Combination Figure 1 As shown, both the inlet pipe 31 and the outlet pipe 32 are tangentially arranged to the ring pipe 3, and the inflow direction of the inlet pipe 31 and the outflow direction of the outlet pipe 32 are respectively tangentially aligned with the direction of the rotation of the flow-pushing ring 7 controlled by the control component 8, so that the solution in the inlet pipe 31 flows into the cavity of the ring pipe 3, and the solution in the ring pipe 3 flows into the outlet pipe 32.

[0050] In this embodiment, the flow-pushing ring 7 includes:

[0051] An internal ring 71 is located in the cavity of the ring tube 3, and scraper rings 72 are respectively provided at both ends of the ring opening to contact the wall of the ring tube 3;

[0052] The flow-driving ring fan 73 is unidirectionally rotated and located in the middle of the inner ring 71 ring wall.

[0053] The unidirectional rotation configuration of the thrust ring fan 73 satisfies the following: Figure 1 As shown in the view, the control component 8 controls the propulsion ring 7 to rotate clockwise. At this time, the propulsion ring fan 73 is subject to resistance from the solution and does not rotate. Therefore, the reaction solution in the ring tube 3 forms a relatively separated reaction solution in the ring tube 3 under the spaced arrangement of the propulsion rings 7. When the control component controls the propulsion ring 7 to rotate clockwise, the reaction solution between the propulsion rings 7 and the propulsion rings 7 can rotate.

[0054] It should be noted that when the solution flow rate is higher than the speed at which the regulating component 8 controls the clockwise rotation of the propulsion ring 7, or when the regulating component 8 controls the counterclockwise rotation of the propulsion ring 7, the propulsion ring fan 73 will rotate due to the resistance of the solution in the ring tube 3. Specifically, when the solution flow rate is higher than the speed at which the regulating component 8 controls the clockwise rotation of the propulsion ring 7, i.e., when the reaction solution between the propulsion rings 7 needs to be discharged, the regulating component 8 adjusts the reaction solution between the propulsion rings 7 to be discharged to align with the outlet pipe 32, and discharges the reaction solution. At this time, the missing solution in the ring tube 3 will be discharged through the inlet pipe. The buffered solution in step 4 is replenished, and the solution can be smoothly added into loop 3. If it is necessary to enhance the stirring degree of the solution in loop 3, the flow-pushing ring 7 can be rotated counterclockwise by adjusting component 8. At this time, the flow-pushing fan 73 has a low flow-pushing effect on the solution in loop 3, thus achieving a high stirring effect. After monitoring shows that the local reaction solution in loop 3 has shown relatively complete reaction, the position of the local reaction solution in the flow-pushing component 7 is determined. Then, the flow-pushing ring 7 is rotated clockwise by adjusting component 8 to discharge the relatively completely reacted solution in time, thereby avoiding continuous growth of crystals and obtaining high-quality reaction crystals.

[0055] In this embodiment, the scraper ring 72 is rotatably connected to the inner ring 71, and the inner wall of the scraper ring 72 is provided with a guide fan blade 74;

[0056] In other words, during the movement of the scraper ring 72 within the ring tube 3, if the solution flows through the guide fan blade 74, it can drive the scraper ring 72 to rotate, thereby further improving the scraping effect on the inner wall of the ring tube 3 and resuspending the crystals in the solution. At the same time, it maintains the stability and accuracy of temperature transfer inside and outside the ring tube 3.

[0057] In this embodiment, the control component 8 includes:

[0058] Magnetic sheets 81 are respectively disposed on the upper and lower annular surfaces of the inner ring 71;

[0059] The ring cover 82 rotates on the fixed frame 2, and its upper and lower ring surfaces are respectively provided with magnetic blocks 83 that attract the magnetic sheet 81;

[0060] The motor 83 is located outside the temperature control box 1, and its output end is equipped with a drive wheel 85 that contacts the inner wall of the ring cover 82;

[0061] In other words, by setting up the magnetic sheet 81 and the magnetic block 83, when the magnetic block 83 moves, it can drive the magnetic sheet 81 to move. When the motor 83 controls the movement of the drive wheel 85, it can drive the ring cover 82 to rotate, thereby driving the push flow ring 7 to rotate.

[0062] In this embodiment, the annular wall of the ring cover 82 is provided with a visual sensor 86 for monitoring the reaction solution in the lumen of the ring tube 3;

[0063] In other words, by using the visual sensor 86 to monitor and judge the suspended particles of the reaction solution in the ring tube 3, the local solution between the push ring 7 in the ring tube 3 that reacts completely first can be identified and discharged in a timely manner, thereby improving the preparation efficiency and quality.

[0064] In this embodiment, the buffer component 10 includes:

[0065] Cross ring 101 is located inside feed pipe 4;

[0066] A sleeve 102 is coaxially mounted on a cross ring 101. A compression chamber 103 is provided at one end of the sleeve near the inlet pipe 31. A plunger rod 105 is connected to the compression chamber 103. The plunger rod 105 is connected to the bottom of the compression chamber 103 by a return spring 104.

[0067] Specifically, the oxalic acid and ammonia solution is continuously fed into the continuous phase feed pipe 4, and the ferrous sulfate solution is continuously fed into the dispersed phase feed pipe 5. They are mixed in the feed pipe 4. At this time, when the control valve 9 is closed, the volume of the solution in the feed pipe 4 increases, and the compression sleeve 102 enters the compression chamber 103, thereby increasing the volume of the cavity inside the feed pipe 4, thus increasing the volume of the solution and buffering the solution. When the solution in the ring pipe 3 needs to be discharged, the control valve 9 opens, and under the action of the return spring 104, the plunger rod 105 will extend out of the compression chamber 103 simultaneously.

[0068] In this embodiment, the outer wall of the plunger rod 105 near the inlet pipe 31 is provided with a stirring fan blade 106 to improve the mixing effect of the continuous phase and the dispersed phase.

[0069] In this embodiment, a dispersing spherical shell 108 is rotatably provided at the end of the column sleeve 102 away from the inlet pipe 31. The column sleeve 102 is also provided with a jet channel 107, which is used to connect the dispersing spherical shell 108 and the feed pipe 5. The outer spherical surface of the dispersing spherical shell 108 is provided with jet holes 109, and the annular surface of the dispersing spherical shell 108 near the wall of the feed pipe 4 is provided with dispersing fan blades 1010.

[0070] In other words, when the dispersed phase flows through the jet hole 109 against the direction of the continuous phase flow, the mixing rate of the dispersed phase and the continuous phase is increased, and the dispersion rate of the dispersed phase is further increased by the dispersion fan blade 1010.

[0071] In this embodiment, the discharge pipe 6 has a rotating scraper blade 91 on its wall, which facilitates the discharge of the generated crystal suspension solution.

[0072] In its specific implementation, it includes the following steps:

[0073] Step 1: Introduce the mixed solution of oxalic acid and ammonia water through the continuous phase feed pipe 4;

[0074] Step 2: Ferrous sulfate solution is introduced from the dispersed phase feed pipe 25, and conveyed to the dispersion sphere shell 108 through the jet channel 107 in the column sleeve 102. It is then sprayed into the continuous phase fluid in a countercurrent direction through the jet holes 109 on its surface. The countercurrent jet generates a strong shearing effect. At the same time, the agitator blade 106 at the end of the plunger rod 105 and the dispersion blade 1010 on the dispersion sphere shell agitate the fluid, so that the two phases achieve millisecond-level uniform mixing before entering the loop tube, instantly generating ferrous oxalate crystal nuclei. When the loop tube outlet control valve 9 is closed, the solution volume in the feed pipe 14 increases, pushing the plunger rod 105 to compress the reset spring 104 into the compression chamber 103, temporarily increasing the buffer volume. When the control valve 9 is opened, the reset spring 104 pushes the plunger rod 105 to reset, pushing the buffer solution into the loop tube to ensure uninterrupted continuous feeding.

[0075] Step 3: The circumferential movement of the flow-pushing ring 7 in the ring tube 3 is controlled by the control component 8, so that the flow-pushing ring 7 and the reaction solution between the flow-pushing ring 7 move.

[0076] The premixed suspension enters the annular tube 3 tangentially through the inlet pipe 31. Since the inlet pipe is tangential to the annular tube and is relatively separated by the pusher ring 7, the control component 8 drives the ring cover 82 to rotate through magnetic force, causing each pusher ring 7 to rotate clockwise synchronously. At this time, the pusher ring fan 73 is kept relatively blocked due to the resistance of the solution. The pusher ring as a whole acts as a piston to push the reaction solution in between to move along the circumference of the annular tube. At the same time, the solution in each compartment is relatively independent, realizing an approximate "flat pusher flow" flow mode, effectively controlling the residence time distribution. The temperature control box 1 accurately controls the temperature of the annular tube. During the flow of the solution in the annular tube, the crystal nucleus growth and crystal morphology transformation from needle-like to plate-like are completed. The guide fan blade 74 on the inner wall of the scraper ring 72 is driven by the flow of the solution to rotate, continuously scraping off the crystals attached to the inner wall of the annular tube, making them resuspended, avoiding scaling and ensuring uniform heat transfer.

[0077] Step 4: Monitor and judge the reaction status of the reaction solution between the push-flow rings 7 in the loop pipe 3. If it is within the reaction completion range, the control component 8 controls the reaction solution between the corresponding push-flow rings 7 to correspond with the outlet pipe 32, and opens the control valve 9 to cooperate in the discharge. If it is not judged that there is reaction solution in the loop pipe 3 within the reaction completion range, the control valve 9 is in the closed state, and the buffer component 10 buffers the solution continuously added in the feed pipe 4.

[0078] The vision sensor 86 continuously monitors the state of suspended particles in the solution of each reaction chamber in the loop tube. It judges the crystal size and the degree of reaction completion through image analysis. Once the reaction solution in a certain chamber reaches the preset "complete reaction" range with appropriate crystal size and qualified morphology, the control component 8 continues to rotate clockwise to align the chamber with the tangential position of the outlet pipe 32. At the same time, the control valve 9 opens to discharge the qualified slurry through the discharge pipe 6. The chambers that do not meet the standards continue to circulate and age in the loop tube until they meet the standards before being discharged, thereby avoiding excessive crystal growth and ensuring that the product has uniform particle size and morphology.

[0079] In addition, the discharge pipe 6 is equipped with a scraper screw 91, which rotates when the slurry flows to prevent crystals from settling and clogging the pipe. The discharged suspension enters the subsequent continuous filtration, washing and drying processes to obtain high-purity, high-tap-density flaky ferrous oxalate product.

[0080] If it is necessary to enhance the stirring and mixing of the solution in the loop, such as to promote uniform nucleation in the early stage of the reaction, the control component 8 can drive the propulsion ring 7 to rotate counterclockwise. At this time, the propulsion ring fan 73 rotates due to the resistance of the solution and loses the propulsion effect. Instead, it plays a role similar to a stirring blade, which can cause high-intensity disturbance to the solution in the loop and improve the mass and heat transfer efficiency.

[0081] The above description is merely a preferred embodiment of the invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A continuous micro-chemical synthesis apparatus for ferrous oxalate, characterized in that, It includes: Temperature control box (1), with a fixed frame (2) inside, a ring pipe (3) on the fixed frame (2), an inlet pipe (31) and an outlet pipe (32) spaced apart on the ring pipe (3), and a push-flow ring (7) evenly distributed around the circumference of the ring pipe (3), a control component (8) for controlling the movement of the push-flow ring (7) on the fixed frame (2), and a control valve (9) on the outlet pipe (32); Feed pipe 1 (4) is located inside temperature control box (1) and connected to inlet pipe (31), and a buffer assembly (10) is provided inside feed pipe 1 (4). Inlet pipe 2 (5) is connected to the cavity of inlet pipe 1 (4); The discharge pipe (6) is located inside the temperature control box (1) and is connected to the outlet pipe (32).

2. The continuous microscale combinatorial synthesis apparatus for ferrous oxalate according to claim 1, characterized in that, The propulsion ring (7) includes: An internal ring (71) is provided in the cavity of the ring pipe (3), and scraper rings (72) that contact the pipe wall of the ring pipe (3) are respectively provided at both ends of the ring opening. The flow-driving ring fan (73) is unidirectionally rotatable and located in the middle of the inner ring (71) ring wall.

3. The continuous microchemical synthesis equipment for ferrous oxalate according to claim 2, characterized in that, The scraper ring (72) is rotatably connected to the inner ring (71), and the inner wall of the scraper ring (72) is provided with a guide fan blade (74).

4. The continuous microchemical synthesis equipment for ferrous oxalate according to claim 2, characterized in that, The control component (8) includes: Magnetic sheets (81) are respectively disposed on the upper and lower annular surfaces of the inner ring (71); The ring cover (82) rotates on the fixed frame (2), and its upper and lower ring surfaces are respectively provided with magnetic blocks (83) that attract the magnetic sheet (81). The motor (83) is located outside the temperature control box (1), and its output end is provided with a drive wheel (85) that contacts the inner wall of the ring cover (82).

5. The continuous microchemical synthesis equipment for ferrous oxalate according to claim 4, characterized in that, The annular wall of the ring cover (82) is provided with a visual sensor (86) for monitoring the reaction solution in the cavity of the ring tube (3).

6. The continuous microchemical synthesis equipment for ferrous oxalate according to claim 1, characterized in that, The buffer component (10) includes: A cross ring (101) is installed inside the feed pipe (4); The sleeve (102) is coaxially mounted on the cross ring (101), and a compression chamber (103) is provided at one end near the inlet pipe (31). A plunger rod (105) is connected to the compression chamber (103), and the plunger rod (105) is connected to the bottom of the compression chamber (103) by a return spring (104).

7. The continuous microchemical synthesis equipment for ferrous oxalate according to claim 6, characterized in that, The plunger rod (105) has a turbulence fan (106) on the outer wall of the end near the inlet pipe (31).

8. The continuous microchemical synthesis equipment for ferrous oxalate according to claim 6, characterized in that, The end of the sleeve (102) away from the inlet pipe (31) has a dispersing spherical shell (108) that rotates. The sleeve (102) is also provided with a jet channel (107). The jet channel (107) is used to connect the dispersing spherical shell (108) and the second feed pipe (5). The outer spherical surface of the dispersing spherical shell (108) is provided with jet holes (109), and the annular surface of the dispersing spherical shell (108) near the wall of the first feed pipe (4) is provided with dispersing fan blades (1010).

9. The continuous microchemical synthesis equipment for ferrous oxalate according to claim 1, characterized in that, The discharge pipe (6) has a scraper screw (91) rotating on its wall.

10. A continuous microchemical synthesis method for ferrous oxalate, comprising using the continuous microchemical synthesis equipment for ferrous oxalate as described in any one of claims 1-9, characterized in that, It includes the following steps: Step 1: Introduce the mixed solution of oxalic acid and ammonia water through the continuous phase feed pipe 1 (4); Step 2: Introduce ferrous sulfate solution into the dispersed phase feed pipe 2 (5); Step 3: The circumferential movement of the push-flow ring (7) in the ring tube (3) is controlled by the control component (8), so that the push-flow ring (7) and the reaction solution between the push-flow ring (7) move; Step 4: Monitor and judge the reaction status of the reaction solution between the push-flow rings (7) in the loop (3). If it is within the reaction completion range, the control component (8) controls the reaction solution between the corresponding push-flow rings (7) to correspond with the outlet pipe (32) and opens the control valve (9) to cooperate in discharge. If it is not judged that there is a reaction solution in the loop (3) within the reaction completion range, the control valve (9) is in the closed state, and the buffer component (10) buffers the solution continuously added in the feed pipe (4).

Images