A reactor for processing propamocarb hydrochloride

Abstract

The invention discloses a reactor for processing cymoxanil hydrochloride, which relates to the field of mixed processing. Cymoxanil hydrochloride is a highly efficient, low-toxic, systemically absorbable carbamate fungicide. Cymoxanil hydrochloride aqueous solution has been widely used to date. During preparation of this solution, a pump body draws a solution from a silo into a transfer silo, causing the liquid level above the rotary disk to increase. When the liquid level reaches a threshold, the exhaust float valve is closed. At this time, the pressure increases continuously and rapidly. As the pressure increases, the first piston moves upward, causing the rotary disk to rotate slightly, and its permeability increases, maintaining the pressure difference between the upper and lower parts. At the same time, the solution that passes through passes through the fixed disk and disperses and falls, and is fully in contact with the circulating nitrogen in a reduced pressure environment, thereby achieving efficient recovery of the additive. In this way, through the delivery rate of the pump body and the change in the permeability of the solution by the pressure control component, a pressure difference of a circulating flow is efficiently formed, and a dripping rain curtain is formed that can fully contact with the nitrogen. Combined with low-speed stirring and heating, the overall additive recovery speed is greatly accelerated.

Description

Technical Field

[0001] The invention relates to the field of mixing processing, and in particular to a reaction kettle for processing propamocarb hydrochloride. Background Art

[0002] Propamocarb hydrochloride is a highly effective, low-toxic, systemic carbamate fungicide. Its aqueous solution is widely used to control cucumber downy mildew, damping-off disease, and sweet pepper blight. Propyl chloroformate and NN-dimethylpropylenediamine are two key intermediates in the preparation of propamocarb hydrochloride. However, the current production process suffers from the high number of raw materials and additives, resulting in the need to recover excess additives after the reaction. NN-dimethylpropylenediamine is reacted with recycled hydrochloric acid to form a salt, followed by dehydration, to produce NN-dimethylpropylenediamine hydrochloride. During the synthesis process, the concentration and dosage of recycled hydrochloric acid are optimized, the reaction temperature and stirring time are controlled, and the acidity is constantly monitored to ensure that N,N-dimethylpropylenediamine reacts fully with hydrochloric acid to form a salt. The additives are then removed by heating and vacuuming, and the excess hydrochloric acid is recycled into a falling-film absorber for reuse. NN-dimethylpropylenediamine hydrochloride reacts with n-propyl chloroformate to produce the technical form of propamocarb hydrochloride.

[0003] The above process is mixed and stirred at a predetermined temperature to undergo condensation reaction to prepare hydrochloride. During the preparation process, it is necessary to circulate the flow during the stirring process to maintain uniformity. After the reaction is completed, it is necessary to perform reduced pressure distillation to allow circulating nitrogen to be introduced under low-speed stirring at a suitable temperature to recover the additive.

[0004] Most current reactors use vacuum pumps to control the low-pressure environment, causing some of the air to be discharged through the reactor, causing pollution. At the same time, simple low-speed stirring in a low-pressure environment has a relatively low recovery rate for additives. Process optimization of this step can effectively shorten the product preparation cycle. Based on this, this solution is proposed. Summary of the Invention

[0005] The purpose of the present invention is to solve the problem of low recovery rate of additives in the traditional propamocarb hydrochloride vacuum distillation, and to propose a reactor for processing propamocarb hydrochloride.

[0006] To achieve the above-mentioned object, the present invention adopts the following technical solution: a reactor for processing propamocarb hydrochloride, comprising a tank body and a stirring assembly installed therethrough, and a circulation assembly connected to one side of the tank body, and also comprising a pressure control assembly installed in the tank body, wherein the circulation assembly includes a pump body for circulating the solution in the tank body and a pressure fluctuation chamber connected to the top end thereof, the pressure control assembly includes a fixed plate and a rotating plate that fit together, and a vertical sleeve that controls the interlacing of the rotating plate and the fixed plate during vertical displacement, and a first piston is provided on the top of the vertical sleeve;

[0007] When the solution circulates, the rotating disk and the fixed disk limit the solution reflux rate and separate the tank body to form a high-pressure space at the top and a low-pressure space at the bottom. The stirring component drives the pressure fluctuation chamber to interfere with the fluctuation of the high-pressure space at the top. The solution reflux rate changes intermittently with the pressure fluctuation, enters the low-pressure environment, forms intermittent liquid falling and reduces pressure distillation.

[0008] As a further description of the above technical solution: the tank body includes a silo and a temperature control silo sealed and attached thereto, and a discharge port opened at the bottom of the silo, and a transfer silo is sealed and installed on the top of the silo.

[0009] As a further description of the above technical solution: the stirring assembly includes a shaft seat that is sealed and installed through the top of the transfer bin, and a motor seat fixed on the top of the shaft seat, and a driver is installed on the top of the motor seat. The output end of the driver is equipped with a stirring shaft through a coupling, and the stirring shaft is rotatably installed in the shaft seat and the motor seat.

[0010] As a further description of the above technical solution: the circulation component also includes a three-way pipe connected to the liquid outlet of the pump body, and the two ends of the three-way pipe are respectively connected to the transfer bin and the pressure fluctuation chamber, the liquid inlet of the pump body is connected to the discharge port, and a pressure gauge is installed on one side of the three-way pipe.

[0011] As a further description of the above technical solution: the pressure fluctuation chamber includes a pressure chamber connected to one end of the tee and a second piston sliding therein, and the second piston and the inner wall of the pressure chamber are jointly installed with a spring, one side of the second piston is fixed with a push rod that slides through one side of the pressure chamber, and a cam is provided in the axial position of the push rod, the cam is fixed on the stirring shaft, a pulley is provided at the end of the push rod, and the pressure chamber is fixed to the top of the transfer bin.

[0012] As a further description of the above technical solution: the pressure control component also includes a sealing chamber fixed in the transfer chamber, the first piston slides in the sealing chamber, and the first piston and the top of the sealing chamber are symmetrically provided with two groups of magnetic blocks with the same relative magnetic pole directions.

[0013] As a further description of the above technical solution: the side wall of the bottom end of the vertical sleeve is provided with a plurality of inclined guide grooves, the inner wall of the turntable is provided with a plurality of sliders that slide in cooperation with the inclined guide grooves, the turntable is rotatably installed between the transfer bin and the silo, and the fixed plate is pressed against the inner wall of the silo, and the vertical sleeve slides on the shaft seat.

[0014] As a further description of the above technical solution: an exhaust float valve for controlling the liquid level therein is installed on the top of the transfer bin, and a plurality of feed ports are provided on the top of the transfer bin.

[0015] As a further description of the above technical solution: a through hole is opened on the top of the transfer bin to cooperate with the gas displacement above the first piston.

[0016] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0017] During stirring, the pump body operates at low power and the stirring component operates at high power to maintain rapid shear stirring of the circulating solution. When the reaction is completed, the pump body operates at high power to pump the solution from the silo to the transfer bin. At this time, the staggered apertures between the rotary disc and the fixed disc cannot meet the needs of a large flow of solution, causing the liquid level above the rotary disc to gradually increase. The air is discharged through the exhaust float valve until the liquid level reaches the threshold and the exhaust float valve is closed. At this time, the pressure continues to increase rapidly. As the pressure increases, the first piston moves upward, causing the rotary disc to rotate slightly. The aperture permeability of the rotary disc and the fixed disc increases in the later stage of the staggered aperture, maintaining the upper and lower pressure difference. At the same time, the solution that passes through passes through the fixed disc and disperses and falls, fully contacting with the circulating nitrogen in a reduced pressure environment, thereby achieving efficient recovery of the additive. This method, through the delivery rate of the pump body and the change in the permeability of the solution by the pressure control component, effectively forms a pressure difference for the circulating flow, and forms a dripping rain curtain that can fully contact with the nitrogen. Combined with low-speed stirring and heating, the overall additive recovery speed is greatly accelerated.

[0018] During the above-mentioned additive recovery process, as the pressure in the transfer bin increases, the push rod in the pressure fluctuation chamber slides out under the action of the pressure and contacts the cam fixed on the stirring shaft, causing its second piston to reciprocate under the action of the cam and the push rod, and directly acts on the fluctuating pressure in the transfer bin through the three-way pipe. Since the stirring shaft rotates at a low speed during additive recovery, the pressure change amplitude meets the use needs. The pressure in the transfer bin changes back and forth within a range, causing the turntable to rotate back and forth slightly, and the solution passing through it fluctuates intermittently, forming a dripping state, thereby enhancing sufficient contact with nitrogen.

[0019] This method disperses the solution through dynamic pressure control, achieving a significant improvement in additive recovery efficiency: the flow of the solution is precisely controlled by switching the pump power and changing the aperture of the rotating disk and fixed disk, forming an efficient circulation system driven by pressure difference; combined with the rain-like dripping in a nitrogen environment and the intermittent liquid flow induced by pressure fluctuations, the gas-liquid contact area is greatly enhanced; at the same time, the pressure can be adaptively adjusted to achieve fast and uniform additive recovery, with the outstanding advantage of doubling the recovery rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 A three-dimensional schematic diagram of the present invention;

[0021] Figure 2 It is a three-dimensional cross-sectional schematic diagram of the present invention;

[0022] Figure 3 It is a schematic cross-sectional view of the present invention;

[0023] Figure 4 This is an enlarged schematic diagram of point A of the present invention;

[0024] Figure 5 It is a three-dimensional cross-sectional schematic diagram of the transfer warehouse of the present invention;

[0025] Figure 6 Schematic diagram of the explosion of the pressure control assembly of the present invention;

[0026] Figure 7 This is a schematic diagram of the initial interlaced state of the rotating disk and the fixed disk in a top view of the present invention;

[0027] Figure 8 Schematic diagram of solution flow in the additive recovery state of the present invention.

[0028] Legend:

[0029] 10. Tank; 11. Silo; 12. Temperature control bin; 13. Discharge port; 14. Transfer bin;

[0030] 20. Stirring assembly; 21. Shaft seat; 22. Motor seat; 23. Stirring shaft; 24. Driver;

[0031] 30. Circulation assembly; 31. Pump body; 32. Tee pipe; 33. Pressure fluctuation chamber; 331. Pressure chamber; 332. Second piston; 333. Spring; 334. Ejector rod; 335. Cam; 34. Pressure gauge;

[0032] 40. Pressure control assembly; 41. Vertical sleeve; 42. Rotary disk; 43. Inclined guide groove; 44. Slider; 45. Fixed disk; 46. First piston; 47. Sealing chamber; 48. Magnetic block;

[0033] 50. Exhaust float valve. DETAILED DESCRIPTION

[0034] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0035] like Figure 1 - Figure 8 As shown, the present invention provides: a reactor for processing propamocarb hydrochloride, comprising a tank body 10 and a stirring assembly 20 installed thereon, specifically, as shown Figure 1 and Figure 3As shown, the tank body 10 includes a silo 11, a temperature control silo 12 sealed thereto, and a discharge port 13 at the bottom of the silo 11. A transfer silo 14 is sealed and mounted on the top of the silo 11. The temperature control silo 12 is attached to the outer wall of the silo 11, thereby controlling the temperature of the solution inside as the heat exchange medium flows therein. A fixed plate 45 is attached to the top of the silo 11, while a rotating disk 42 is attached to the upper surface of the fixed plate 45 and is clamped between the silo 11 and the transfer silo 14, allowing the rotating disk 42 to rotate and slide.

[0036] Specifically, such as Figure 3 As shown, the stirring assembly 20 includes a shaft seat 21 that is sealed and installed through the top of the transfer bin 14, and a motor seat 22 fixed on the top of the shaft seat 21, and a driver 24 is installed on the top of the motor seat 22. The output end of the driver 24 is equipped with a stirring shaft 23 through a coupling transmission, and the stirring shaft 23 is rotatably installed through the shaft seat 21 and the motor seat 22.

[0037] By setting up the shaft seat 21, the shaft seat 21 is fixed on the transfer bin 14, which can meet the rotation support needs of the stirring shaft 23. At the same time, the driver 24 can be installed through the motor seat 22. The driver 24 can rotate at high speed with the stirring shaft 23 through the coupling to shear and stir the solution.

[0038] One side of the tank body 10 is connected to a circulation component 30, specifically, Figure 3 As shown, the circulation component 30 also includes a tee pipe 32 connected to the liquid outlet of the pump body 31, and the two ends of the tee pipe 32 are respectively connected to the transfer bin 14 and the pressure fluctuation chamber 33, the liquid inlet of the pump body 31 is connected to the discharge port 13, and a pressure gauge 34 is installed on one side of the tee pipe 32.

[0039] By setting up the pump body 31, the pump body 31 can extract the solution in the silo 11 and input it into the transfer bin 14 through the tee 32. During this process, based on the second piston 332 blocking the top of the tee 32, the solution will not enter, including the residual air at the top of the tee 32 entering when the second piston 332 slides later. No solution will flow in to cause corrosion of the second piston 332. At the same time, the pressure gauge 34 is located on the tee 32, which can detect the pressure data in the tee 32 and the transfer bin 14.

[0040] A pressure control assembly 40 is installed in the tank body 10, and the circulation assembly 30 includes a pump body 31 for circulating the solution in the tank body 10 and a pressure fluctuation chamber 33 connected to the top thereof. Specifically, Figure 4As shown, the pressure fluctuation chamber 33 includes a pressure chamber 331 connected to one end of the tee pipe 32 and a second piston 332 sliding therein, and the second piston 332 and the inner wall of the pressure chamber 331 are jointly installed with a spring 333, and a push rod 334 is fixed on one side of the second piston 332 and slides through one side of the pressure chamber 331, and a cam 335 is provided in the axial position of the push rod 334, the cam 335 is fixed on the stirring shaft 23, and a pulley is provided at the end of the push rod 334, and the pressure chamber 331 is fixed on the top of the transfer bin 14.

[0041] By setting the pressure fluctuation, when the pressure increases, the second piston 332 compresses the spring 333 and slides out with the push rod 334 until the pressure threshold in the transfer bin 14 is reached, and the pulley at the top of the push rod 334 moves to the motion interference area of ​​the cam 335. During normal stirring operation, the pressure decreases, the spring 333 resets the second piston 332, and the cam 335 has no motion interference, meeting the use requirements of the high-speed rotation of the stirring shaft 23. Figure 4 and Figure 5 It can be seen that a counterweight is provided below the cam 335 to meet the stability requirements under high-speed rotation.

[0042] The pressure control assembly 40 includes a fixed plate 45 and a rotating plate 42 that fit together, and a vertical sleeve 41 that controls the rotating plate 42 and the fixed plate 45 to intersect when the vertical displacement occurs, and a first piston 46 is provided on the top of the vertical sleeve 41;

[0043] Specifically, such as Figure 5 and Figure 6 As shown, the pressure control assembly 40 also includes a sealed chamber 47 fixed within the transfer chamber 14. The first piston 46 slides in the sealed chamber 47. Two sets of magnets 48 with the same relative magnetic pole orientations are symmetrically disposed on the top of the first piston 46 and the sealed chamber 47. The provision of the sealed chamber 47 enables the sliding of the first piston 46 and supports the sliding of the first piston 46. At the same time, the magnetic pole orientations of the two sets of magnets 48 are the same, resulting in a repulsive force between their opposing surfaces, providing reverse support when moving toward each other.

[0044] Specifically, such as Figure 6 As shown, the side wall of the bottom end of the vertical sleeve 41 is provided with a plurality of inclined guide grooves 43, and the inner wall of the turntable 42 is provided with a plurality of sliders 44 that slide in cooperation with the inclined guide grooves 43. The turntable 42 is rotatably installed between the transfer bin 14 and the silo 11, and the fixed plate 45 is pressed against the inner wall of the silo 11, and the vertical sleeve 41 slides on the shaft seat 21.

[0045] By adopting a vertical sleeve 41, which slides on the shaft seat 21, it can guide the sliding of the slider 44 through the inclined guide groove 43 of its arc-shaped side wall during a small vertical lifting and sliding. The slider 44 slides in the inclined guide groove 43 and displaces horizontally at the same time, causing it to rotate with the turntable 42.

[0046] When the solution circulates, the rotary disk 42 and the fixed disk 45 limit the solution reflux rate and separate the tank body 10 to form a high-pressure space at the top and a low-pressure space at the bottom. The stirring assembly 20 drives the pressure fluctuation chamber 33 to interfere with the fluctuation of the high-pressure space at the top. The solution reflux rate changes intermittently with the pressure fluctuation, enters the low-pressure environment, forms intermittent liquid falling and is distilled under reduced pressure.

[0047] Specifically, such as Figure 2 As shown, an exhaust float valve 50 for controlling the liquid level therein is installed on the top of the transfer bin 14, and multiple feed ports are provided on the top of the transfer bin 14. By providing the exhaust float valve 50, the air in the transfer bin 14 can be discharged, so that the transfer bin 14 can be connected to the external ambient air. When the flow rate increases, the permeability of the rotary disk 42 cannot quickly pass the solution, so that the liquid level gradually increases. After the liquid level reaches a predetermined height, the exhaust float valve 50 is closed. During this process, the internal pressure gradually increases. During the process of increasing pressure, the rotary disk 42 rotates to increase the flow rate. At the same time, the flow rate is also accelerated under the action of pressure, which speeds up the permeability to a certain extent.

[0048] Specifically, such as Figure 3 and Figure 5 As shown, the top of the transfer chamber 14 is provided with a through hole to facilitate gas displacement above the first piston 46. A sealed chamber 47 on the surface of the first piston 46 is fixed to the top of the transfer chamber 14. The through hole provided in the transfer chamber 14 is connected to the sealed chamber 47. When the first piston 46 slides, the air in the space between the two sets of magnetic blocks 48 above it can be discharged through the through hole.

[0049] During stirring, the solution is added through the feed port on the transfer bin 14, so that the solution gradually flows into the silo 11, and then the driver 24 rotates with the stirring shaft 23 in the shaft seat 21 under the support of the motor seat 22, and stirs and mixes the solution in the silo 11. In this process, the temperature is controlled by introducing the temperature control medium through the temperature control bin 12. When necessary, the pump body 31 extracts the solution through the discharge port 13 at the bottom of the silo 11 and pumps the solution into the transfer bin 14. The solution enters the transfer bin 14 and passes through the gap between the rotary disk 42 and the fixed disk 45 under the action of gravity. The liquid level does not contact the exhaust float valve 50, so that the whole presents high-speed stirring in a heated state and the pressure does not change.

[0050] During additive recovery, the driver 24 controls the stirring shaft 23 to rotate at a low speed. At the same time, nitrogen is circulated into the silo 11. After the nitrogen is discharged, the nitrogen is dried and the additives carried by the nitrogen are recovered. The nitrogen is then heated and returned to the silo 11. The stirred solution is also heated. At this time, the heating temperature does not reach the evaporation temperature of the additive. The pump body 31 is started to quickly pump the solution out of the silo 11 and flow it into the transfer silo 14 through the tee pipe 32 (because the top of the tee pipe 32 is relatively sealed and there is no exhaust, the solution can only enter the transfer silo 14 directly). After the solution quickly enters the transfer silo 14, the air in the transfer silo 14 is discharged through the exhaust float valve 50. Part of the solution flows back to the silo 11 through the rotary disk 42 and the fixed disk 45. As the liquid level in the transfer silo 14 gradually rises, the air in the transfer silo is discharged. When the liquid level reaches a certain height, the exhaust float valve 50 is closed to exhaust. At this time, the transfer silo 14 is in a closed state, and the internal pressure gradually increases. As the pressure increases, the residual air in the transfer silo is compressed.

[0051] The pressure in the transfer chamber 14 increases. As the pressure gradually increases, the pressure first acts on the first piston 46 sliding in the sealed chamber 47, causing it to compress the gap between the two sets of magnets 48 with the same magnetic pole direction on two opposing surfaces, and move the vertical sleeve 41 upward. The two sets of magnets 48 provide an elastic repulsive force. As the internal pressure increases, the compression amplitude increases (based on the spacing between the two sets of magnets, the actual upward movement distance of the vertical sleeve 41 is small). As the vertical sleeve 41 moves upward with increasing pressure, the multiple inclined guide grooves 43 formed in its curved sidewalls guide the sliding block 44 sliding therein. As the slider 44 slides under guidance, its rotating disk 42 begins to rotate slightly, causing the rotating disk 42 and the fixed disk 45 to begin to misalign, increasing the opening and the solution flow rate. This method can maintain solution circulation after the pump body 31 is started and form a constant upper and lower pressure difference. When the pressure difference is exceeded, the opening increases and the flow rate is simultaneously increased, maintaining the pressure difference between the upper and lower spaces and the optimal low-pressure distillation environment. After the pressure is constant, the flow rate can be controlled as needed without affecting the pressure.

[0052] When the pressure is low, the second piston 332 has no displacement. When the pressure gradually increases, the second piston 332 and the first piston 46 are synchronously subjected to pressure and slide in the pressure chamber 331. As the second piston 332 moves, until the pressure inside it reaches a constant threshold, the second piston 332 compresses the spring 333 and slides out with the push rod 334 until the pulley of the push rod 334 contacts the cam 335. The cam 335 rotates with the stirring shaft 23. The stirring shaft 23 is in a low speed state of the additive recovery mode. Its cam 335 squeezes the push rod 334 and the second piston 332 in the opposite direction. The second piston 332 resets to a certain distance, and the pressure in the transfer bin 14 is instantly increased through the three-way pipe 32. When the cam 335 rotates to the far end, the spring 333 is again compressed by the second piston 33 2 compression, wherein the pressure in the transfer bin 14 returns to the threshold value. This method realizes that after the pressure threshold is reached in the transfer bin 14, the liquid level therein fluctuates back and forth within a certain amplitude, causing the pressure to fluctuate back and forth at a certain frequency. The pressure that continuously fluctuates back and forth at the pressure threshold causes the throughput of the rotary disk 42 and the fixed disk 45 to increase slightly based on the solution throughput at the pressure threshold state, and then reset, forming an intermittent water line (due to the large number, a rain curtain effect is formed). The water line is then in contact with nitrogen in the rain curtain below the top plate, and is fully contacted with nitrogen in a heated state and carried out. It is then mixed with the solution in the silo 11 and continuously circulated. Compared with the traditional additive vacuum distillation recovery method of direct low-speed stirring and synchronous heating, this method has greatly improved efficiency.

[0053] The above additives are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A reactor for processing propamocarb hydrochloride, comprising a tank body (10) and a stirring assembly (20) installed therethrough, and a circulation assembly (30) connected to one side of the tank body (10), and further comprising a pressure control assembly (40) installed in the tank body (10), characterized in that: The circulation assembly (30) includes a pump body (31) for circulating the solution in the tank body (10) and a pressure fluctuation chamber (33) connected to the top of the pump body (31). The pressure control assembly (40) includes a fixed plate (45) and a rotating plate (42) that fit together, and a vertical sleeve (41) that controls the rotating plate (42) and the fixed plate (45) to intersect when the rotating plate (42) is vertically displaced. The side wall of the bottom end of the vertical sleeve (41) is provided with a plurality of inclined guide grooves (43). The inner wall of the rotating plate (42) is provided with a plurality of sliding blocks (44) that slide in conjunction with the inclined guide grooves (43). A first piston (46) is provided at the top of the vertical sleeve (41). The pressure control assembly (40) further includes a sealing chamber (47) fixed in the transfer chamber (14), the first piston (46) slidingly fitting in the sealing chamber (47), and two sets of magnetic blocks (48) with the same relative magnetic pole direction are symmetrically arranged on the top of the first piston (46) and the sealing chamber (47); The circulation assembly (30) further includes a three-way pipe (32) connected to the liquid outlet of the pump body (31); The pressure fluctuation chamber (33) includes a pressure chamber (331) connected to one end of the three-way pipe (32) and a second piston (332) sliding therein, and a spring (333) is installed on both the second piston (332) and the inner wall of the pressure chamber (331). A push rod (334) is fixed on one side of the second piston (332) and slides through one side of the pressure chamber (331), and a cam (335) is provided at the axial position of the push rod (334). When the solution circulates, the rotating disk (42) and the fixed disk (45) limit the reflux flow and separate the tank body (10) to form a high-pressure space at the top and a low-pressure space at the bottom. The stirring assembly (20) drives the pressure fluctuation chamber (33) to interfere with the fluctuation of the high-pressure space at the top. The reflux flow of the solution changes intermittently with the pressure fluctuation, enters the low-pressure environment, forms intermittent liquid falling and is distilled under reduced pressure.

2. The reactor for processing propamocarb hydrochloride according to claim 1, characterized in that: The tank body (10) comprises a silo (11) and a temperature control silo (12) sealed and attached thereto, and a discharge port (13) opened at the bottom of the silo (11). A transfer silo (14) is sealed and installed at the top of the silo (11).

3. A reactor for processing propamocarb hydrochloride according to claim 2, characterized in that: The stirring assembly (20) includes a shaft seat (21) that is sealed and installed on the top of the transfer bin (14), and a motor seat (22) that is fixed on the top of the shaft seat (21), and a driver (24) is installed on the top of the motor seat (22). The output end of the driver (24) is equipped with a stirring shaft (23) through a coupling transmission, and the stirring shaft (23) is rotatably installed in the shaft seat (21) and the motor seat (22).

4. The reactor for processing propamocarb hydrochloride according to claim 3, characterized in that: The two ends of the three-way pipe (32) are respectively connected to the transfer bin (14) and the pressure fluctuation chamber (33), the liquid inlet of the pump body (31) is connected to the discharge port (13), and a pressure gauge (34) is installed on one side of the three-way pipe (32).

5. The reactor for processing propamocarb hydrochloride according to claim 4, characterized in that: The cam (335) is fixed on the stirring shaft (23), a pulley is provided at the end of the push rod (334), and the pressure chamber (331) is fixed on the top of the transfer bin (14).

6. The reactor for processing propamocarb hydrochloride according to claim 3, characterized in that: The rotary disc (42) is rotatably mounted between the transfer bin (14) and the silo (11), and the fixed disc (45) is pressed against the inner wall of the silo (11), and the vertical sleeve (41) is slidably mounted on the shaft seat (21).

7. The reactor for processing propamocarb hydrochloride according to claim 6, characterized in that: An exhaust float valve (50) for controlling the liquid level therein is installed on the top of the transfer bin (14), and a plurality of feed ports are provided on the top of the transfer bin (14).

8. The reactor for processing propamocarb hydrochloride according to claim 7, characterized in that: A through hole is provided on the top of the transfer chamber (14) to facilitate gas displacement above the first piston (46).

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