Pyraclostrobin preparation device

Abstract

The invention discloses a pyraclostrobin preparation device which comprises a reaction kettle and further comprises a temperature control cooling box, the temperature control cooling box is provided with a containing space, a partition part is arranged in the temperature control cooling box, the partition part divides the containing space into a cooling channel and a temperature control channel, and the temperature control channel is communicated with the cooling channel. The temperature control cooling box and the separation part are both made of heat conduction materials, a hydrothermal solution is introduced into the temperature control channel, and the temperature of the hydrothermal solution is higher than the crystallization temperature of pyraclostrobin. According to the pyraclostrobin preparation device provided by the invention, the reaction kettle and the temperature control cooling box are combined for use, so that a pyraclostrobin solution can circularly move between the reaction kettle and the temperature control cooling box, and precipitates and irregular crystals are fed into the reaction kettle for re-processing; the production speed of the pyraclostrobin crystals is increased, and meanwhile continuous production can be achieved.

Description

Technical Field

[0001] The invention belongs to the technical field of pyraclostrobin, and in particular relates to a pyraclostrobin preparation device. Background Art

[0002] Pyraclostrobin crystals, usually white or off-white flaky crystals, can control diseases caused by almost all types of fungal pathogens such as ascomycetes, basidiomycetes, deuteromycetes and oomycetes.

[0003] The melting point of pyraclostrobin is low and the melting point span between different crystal forms is large, which requires extremely high accuracy of temperature control during the crystallization process. In addition, the solubility of pyraclostrobin is affected by both solvent and temperature. The difference in solubility of different solvents at different temperatures may lead to uncertainty in crystallization behavior. The crystallization process is a dynamic process involving multiple steps such as dissolution, diffusion, nucleation and growth of solutes in solvents. These steps are all affected by temperature and have complex interactions with each other. Therefore, during the crystallization process, changes in temperature may trigger a series of chain reactions, leading to unpredictable crystallization behavior. Although modern temperature control technology has made great progress, it may still be affected by equipment and technical limitations in some cases. For example, the temperature control range of some equipment may not meet the crystallization requirements of a specific substance; or under certain extreme conditions, the stability and accuracy of the temperature control system may be affected.

[0004] The preparation of pyraclostrobin crystals is that the pyraclostrobin solution and other auxiliary materials are heated and fully stirred inside a reactor to fully mix the original drug and the auxiliary materials, and the internal heating mechanism is used to continue heating and stirring to make the pyraclostrobin original drug and the auxiliary materials coagulate in a molten state, and then the cooling mechanism inside the reactor is used to cool the solution to obtain the pyraclostrobin crystals.

[0005] However, in the existing preparation operation, there are the following problems:

[0006] ① The temperature inside the reactor is high. When entering the cooling process, the reactor needs to be cooled by its own cooling mechanism, which takes time to cool the reactor down to a temperature close to that of the pyraclostrobin solution, so as to affect the temperature of the pyraclostrobin solution inside the reactor. This cooling operation is inefficient.

[0007] ② The crystallization process of pyraclostrobin is very sensitive to temperature, solvent, stirring speed and other conditions. Slight temperature changes may lead to significant changes in crystal morphology, particle size distribution and purity. It is easy for the local cooling rate of the pyraclostrobin suspension to be too fast. When the pyraclostrobin solution changes from a molten state to a solid state, the molecules or atoms need time to arrange according to certain rules to form a stable crystal structure. Too fast cooling will result in an irregular crystal structure, which will affect the physical and chemical properties of the product and easily cause precipitation.

[0008] ③ When the cooling speed is too fast, some components in the pyraclostrobin solution are denatured or precipitated, and the concentrations of the pyraclostrobin solution in different areas are also different, which will cause the overall concentration of the pyraclostrobin solution to be unstable and dilute, the conversion rate of the pyraclostrobin crystals to further decrease, and the size of the pyraclostrobin crystals to be uneven. Summary of the invention

[0009] In view of the deficiencies in the prior art, the object of the present invention is to provide a device for preparing pyraclostrobin.

[0010] In order to achieve the above-mentioned invention object, the technical solution adopted by the present invention includes a reaction kettle and further includes:

[0011] A temperature-controlled cooling box, wherein the temperature-controlled cooling box has a storage space, a partition component is arranged in the temperature-controlled cooling box, and the partition component divides the storage space into a cooling channel and a temperature-controlled channel, the temperature-controlled cooling box and the partition component are both made of heat-conducting materials, and a hot liquid is passed into the temperature-controlled channel, and the temperature of the hot liquid is higher than the crystallization temperature of pyraclostrobin;

[0012] A pump part, the reactor is connected to the cooling channel through the pump part, so that the pyraclostrobin solution in the reactor can enter the cooling channel;

[0013] A flow rate controller, the flow rate controller is in communication with the interior of the cooling channel, and the flow rate controller controls the outflow rate of the pyraclostrobin solution in the cooling channel so that the interior of the cooling channel is always filled with the pyraclostrobin solution;

[0014] A filter assembly is connected to the reactor and the flow rate controller. The pyraclostrobin solution flowing out of the flow rate controller flows through the filter assembly and then flows into the reactor. The filter assembly can filter the pyraclostrobin crystals and pass through the pyraclostrobin precipitation particles.

[0015] Preferably, the temperature control channel comprises a plurality of heat exchange chambers arranged on a partition component, a plurality of the heat exchange chambers are distributed along a flow direction of liquid in the temperature control channel, and the heat exchange chambers have heat exchange ports for hot liquid to pass into the interior thereof.

[0016] Preferably, the filtration assembly comprises a separation box fixedly connected to the middle of the solution reflux pipe, wherein a filter membrane is arranged in the separation box, and filter holes are provided in the filter membrane, wherein the filter holes can filter pyraclostrobin crystals and pass through pyraclostrobin precipitated particles.

[0017] Preferably, an ultrasonic transmitter and an ultrasonic generator are fixedly connected to one side of the separation box, the ultrasonic transmitter is electrically connected to the ultrasonic generator, and the ultrasonic transmitter can transmit ultrasonic waves into the separation box to shatter the precipitate in the pyraclostrobin solution.

[0018] Preferably, the ultrasonic frequency emitted by the ultrasonic transmitter is 20-30 kHz, and the ultrasonic frequency emitted by the ultrasonic transmitter is 10-80 W / 10 kg.

[0019] Preferably, the temperature of the hot liquid is 65.3°C to 90°C.

[0020] Preferably, the pore size of the filter pores ranges from 20 to 40 microns.

[0021] It should be noted that the particles of pyraclostrobin precipitate after being broken up are 0.1 microns, while the crystals of pyraclostrobin are flakes of 60 to 70 microns. The filter holes opened can discharge the pyraclostrobin precipitate and the pyraclostrobin crystals with smaller crystals, and filter and retain the larger pyraclostrobin crystals in the separation box.

[0022] Preferably, the hot liquid inside the temperature control channel flows out from the bottom of the temperature control cooling box to the top thereof.

[0023] Compared with the prior art, the advantages of the present invention include:

[0024] (1) The present invention provides a pyraclostrobin preparation device, in which a temperature-controlled cooling box is arranged outside a reactor. After the condensation is completed, a pyraclostrobin solution in a molten state is fed into a cooling channel of the temperature-controlled cooling box, and a hot liquid is introduced into the temperature-controlled channel to exchange heat with the cooling channel to control the cooling rate of the pyraclostrobin solution. Compared with the prior art, the pyraclostrobin solution can be directly cooled by external cooling without overcoming the heat of the reactor itself, and the temperature-controlled channel can be used to conveniently control the cooling rate of the pyraclostrobin solution, thereby reducing the generation of precipitation of the pyraclostrobin solution and improving the cooling efficiency and effect of the pyraclostrobin solution.

[0025] (2) The present invention provides a pyraclostrobin preparation device. When pyraclostrobin precipitation and small irregular pyraclostrobin crystals appear, they can be filtered out through the filter hole and sent to the reactor for heating and melting and condensation again, and then sent to the temperature-controlled cooling box for cooling. This allows the device to reprocess the precipitation and some irregular crystals generated during the cooling of the pyraclostrobin solution, thereby avoiding waste of resources.

[0026] (3) The pyraclostrobin preparation device provided by the present invention can, through the combined use of an ultrasonic transmitter and an ultrasonic generator, when a mixture of precipitated pyraclostrobin crystals with smaller crystal sizes and normal-sized crystals appears, the precipitated pyraclostrobin crystals and some of the smaller-sized pyraclostrobin crystals will be filtered through a filter membrane and returned to the reactor for reheating and circulation treatment, so that the temperature of the pyraclostrobin solution is stabilized, the conversion rate of the pyraclostrobin crystals is improved, and the pyraclostrobin crystals are further promoted to be larger;

[0027] (4) The present invention provides a pyraclostrobin preparation device, which is used in combination with a reactor and a temperature-controlled cooling box, so that the pyraclostrobin solution can circulate between the reactor and the temperature-controlled cooling box, thereby sending the precipitate and irregular crystals into the reactor for further processing, thereby increasing the production speed of pyraclostrobin crystals and realizing continuous production. The interior of the reactor can be continuously maintained within the temperature range of the hot melt treatment, without the need to cool the interior of the reactor, thereby reducing heat loss.

[0028] (5) The present invention provides a pyraclostrobin preparation device. Through the setting of the Tesla valve plate, when the hot liquid enters the temperature-controlled cooling box, part of the hot liquid will accelerate the flow along the water supply channel. This operation enables the hot liquid to quickly reach the top space of the temperature-controlled cooling box, reducing the temperature difference between the hot liquid at the bottom and the hot liquid at the top of the temperature-controlled cooling box, so that the temperature difference when the hot liquid enters the heat exchange chambers at different positions and heights is reduced, thereby improving the heat exchange effect of the heat exchange chambers. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 It is an overall schematic diagram of a pyraclostrobin preparation device of the present invention;

[0031] Figure 2 It is a schematic diagram of the separation box in the present invention;

[0032] Figure 3 This is a schematic diagram of the temperature-controlled cooling box in the present invention;

[0033] Figure 4 It is a schematic diagram of the filter box in the present invention;

[0034] Figure 5 It is a schematic diagram of the partition plate in the present invention;

[0035] Figure 6 Schematic diagram of the Tesla valve plate in the present invention.

[0036] Reference numerals:

[0037] 1. Reactor; 2. Temperature control cooling box; 3. Water pump; 4. Solution delivery pipe; 5. Separation box; 6. Warm water output pipe; 7. Ultrasonic transmitter; 8. Ultrasonic generator; 9. Cover plate; 10. Warm water input pipe; 11. Solution reflux pipe; 12. Cooling channel; 13. Temperature control channel; 14. Heat exchange chamber; 1401. Partition plate; 1402. Tesla valve plate; 1403. Water delivery channel; 1404. Reflux channel; 1405. Reflux arc water tank; 15. Flow rate controller; 16. Filter box; 17. Filter membrane. DETAILED DESCRIPTION

[0038] In view of the deficiencies in the prior art, the inventor of this case has proposed the technical solution of the present invention after long-term research and extensive practice. The following will further explain the technical solution, its implementation process and principle, etc. in conjunction with the drawings in the embodiments of this application and specific implementation cases.

[0039] It should be noted that the embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention. The described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments in the present invention, the present invention covers any substitution, modification, equivalent method and scheme made on the spirit, principle and scope of the present invention defined by the claims. All other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] In the description of the present application, "first", "second", "third" and similar words do not indicate any order, quantity or importance, but are only used to distinguish different components. Similarly, "one" or "an" and other similar words do not indicate a quantity limitation, but indicate the existence of at least one. "Include" or "comprise" and other similar words mean that the elements or objects appearing before "include" or "comprises" include the elements or objects listed after "include" or "comprises" and their equivalents, and do not exclude other elements or objects. "Connect" or "connected" and other similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect.

[0041] In the description of the present application, the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. In addition, when positional terms such as both sides, outside, up and down are used, it should be understood that they are only used to facilitate understanding and description, considering that the structure may be facing other positions.

[0042] In the description of this application, unless otherwise clearly specified and limited, the technical or scientific terms used should have the usual meanings understood by persons with general skills in the field to which this application belongs. Terms such as "install", "connect", and "connect" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, a conflicting connection, or an integrated connection. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0043] The embodiment of the present invention is intended to introduce and illustrate the structural composition of the pyraclostrobin preparation device and the coordination relationship between the various components. Unless otherwise specified, the size, material and manufacturing process of each component suitable for the pyraclostrobin preparation device in the embodiment of the present invention can be selected according to the specific situation, and no special limitation or description is made here.

[0044] Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the following detailed description of the present invention. For those skilled in the art, the present invention can be fully understood without the description of these details.

[0045] Example 1

[0046] See also Figure 1 and Figure 2 A pyraclostrobin preparation device comprises a reactor 1, and further comprises: a temperature-controlled cooling box 2, the temperature-controlled cooling box 2 has a containing space, a partition component is arranged in the temperature-controlled cooling box 2, the partition component divides the containing space into a cooling channel 12 and a temperature-controlled channel 13, the temperature-controlled cooling box 2 and the partition component are both made of heat-conducting materials, a hot liquid is passed into the temperature-controlled channel 13, and the temperature of the hot liquid is higher than the crystallization temperature of pyraclostrobin;

[0047] Thermally conductive materials include silver, copper, and aluminum in metal materials; Al in ceramic materials 2 O 3 、AlN、Si 3 N 4 , SiC and thermal conductive plastics, etc.

[0048] A pump part, wherein the reactor 1 is connected to the cooling channel 12 via the pump part, so that the pyraclostrobin solution in the reactor 1 can enter the cooling channel 12;

[0049] A flow rate controller 15, the flow rate controller 15 is in communication with the interior of the cooling channel 12, and the flow rate controller 15 controls the outflow rate of the pyraclostrobin solution in the cooling channel 12 so that the interior of the cooling channel 12 is always filled with the pyraclostrobin solution;

[0050] The filter assembly is connected to the reactor 1 and the flow rate controller 15. The pyraclostrobin solution flowing out of the flow rate controller 15 flows through the filter assembly and then flows into the reactor 1. The filter assembly can filter the pyraclostrobin crystals and pass through the pyraclostrobin precipitation particles.

[0051] It can be understood that the pump part adopts a water pump 3, and the liquid inlet of the water pump 3 is fixedly connected to a liquid extraction pipe, and the liquid extraction pipe is connected to the bottom of the chamber inside the reactor 1 for storing the thiamethoxam solution. The water pump 3 can extract the thiamethoxam solution from the reactor 1 through the liquid extraction pipe, and the liquid outlet of the water pump 3 is fixedly connected to a solution delivery pipe 4, and the solution delivery pipe 4 is connected to the inside of the temperature control channel 13, and the thiamethoxam solution extracted by the liquid extraction pipe can be delivered to the inside of the cooling channel 12. The thiamethoxam solution entering the cooling channel 12 can have a temperature difference with the temperature control channel 13 and can exchange heat, so as to slow down the cooling speed while utilizing the material of the temperature control cooling box 2 itself to conduct heat. Characteristic cooling, the cooled pyraclostrobin solution enters the interior of the filter assembly through the solution reflux pipe 11, the precipitate and partially crystallized smaller pyraclostrobin crystals in the pyraclostrobin solution are discharged into the reactor 1 through the solution reflux pipe 11 for reheating treatment, and a one-way valve is provided at the position of the solution reflux pipe 11 near the reactor 1 to prevent the pyraclostrobin solution from flowing back from the interior of the reactor 1 to the interior of the solution reflux pipe 11, and the reactor 1 and the temperature-controlled cooling box 2 are used in combination, so that the pyraclostrobin solution can circulate between the reactor 1 and the temperature-controlled cooling box 2, thereby improving the production speed of the pyraclostrobin crystals and realizing continuous production.

[0052] It should be noted that the structure inside the reactor 1 is the same as that in the prior art, and both have a heating mechanism and a stirrer, wherein the stirrer is provided by a driving motor disposed on the top of the reactor 1, and a stirring rod is disposed inside the reactor 1, which is connected to the stirring rod by the driving motor, and can drive the stirring rod to rotate to complete the mixing between pyraclostrobin and the auxiliary material. The heating structure is the same as that in the prior art, and will not be described in detail here.

[0053] See also Figure 3 The temperature control channel 13 includes a plurality of heat exchange chambers 14 arranged along the partition component, and the plurality of heat exchange chambers 14 are distributed along the flow direction of the liquid in the temperature control channel 13. The heat exchange chamber 14 has a heat exchange port for hot liquid to pass into the interior thereof. The width of the heat exchange port is smaller than the width of the side wall of the heat exchange chamber 14 when the heat exchange chamber 14 and the partition component are in a parallel state. The hot liquid in the temperature control channel 13 exchanges heat with the cooling channel 12 through the heat exchange chamber 14. It can be seen that a plurality of heat exchange chambers 14 are formed by combining a plurality of sealing plates and partition components, and the small diameter of the heat exchange port limits the flow rate of the hot liquid between the temperature control channel 13 and the heat exchange chamber 14. At the same time, there is a heat difference between the hot liquid and the pyraclostrobin solution, so that the heat exchange chamber 14 can perform heat exchange treatment on the pyraclostrobin solution in the cooling channel 12, thereby reducing the pyraclostrobin precipitation and the crystallization of smaller pyraclostrobin crystals due to the excessively fast cooling rate of the pyraclostrobin solution.

[0054] It can be understood that the temperature required for the crystallization of the pyraclostrobin solution is between 63.7°C and 65.2°C, the temperature of the hot liquid is between 65.3°C and 90°C, and an electric heating wire can be installed inside the temperature control channel 13 and used in combination with a temperature controller. The temperature of the hot liquid inside the temperature control channel 13 can be adjusted according to actual usage to play a role in heat preservation. The temperature of the hot liquid can be selected to be 65.3°C, 70°C, 75°C, 80°C, 85°C, or 90°C. The temperature of the hot liquid needs to be adjusted according to actual usage. The material of the hot liquid includes water, organic solvents, mineral oil, etc., and the material of the hot liquid can be selected according to usage requirements.

[0055] See also Figure 3 It should be noted that the hot liquid inside the temperature control channel 13 flows out from the bottom of the temperature control cooling box 2 to the top thereof, that is, a warm water input pipe 10 that can communicate with the interior of the temperature control channel 13 is installed at the bottom of the temperature control channel 13, and a warm water output pipe 6 that can communicate with the interior of the temperature control channel 13 is installed at the top of the temperature control channel 13. The hot liquid is sent into the temperature control channel 13 from the warm water input pipe 10, and then discharged through the warm water output pipe 6. Through this bottom-up hot liquid transportation operation, the temperature of different areas inside the temperature control channel 13 can be kept uniform, avoiding the occurrence of low temperatures in some areas. At the same time, a flow rate controller 15 can also be installed in the warm water input pipe 10, so that the liquid flow rate inside the temperature control channel 13 can be controlled.

[0056] It can be understood that the hot liquid is heated by an external heating device for heating the liquid medium, and then a booster pump is provided to pump the heated hot liquid into the warm water input pipe 10. The specific structure of the heating device is the same as the structure in the prior art. Both of them are formed by adding an electric heating wire or a steam heating structure inside a tank body capable of storing liquid to heat the medium. The details are not repeated here. A material feeding pipe is provided in the reactor 1, and the pyraclostrobin raw material and other auxiliary materials can be fed into the reactor 1.

[0057] See also Figure 4 An ultrasonic transmitter 7 and an ultrasonic generator 8 are fixedly connected to one side of the separation box 5. The ultrasonic transmitter 7 is electrically connected to the ultrasonic generator 8. The ultrasonic transmitter 7 can transmit ultrasonic waves to the separation box 5 to break the precipitation in the pyraclostrobin solution. The ultrasonic frequency emitted by the ultrasonic transmitter 7 is 20 to 30 kHz, and the ultrasonic power emitted by the ultrasonic transmitter 7 is 10 to 80 W / 10 kg. The density of pyraclostrobin crystals is usually 1.27 g / cm 3About, while shattering the pyraclostrobin crystals requires an ultrasonic wave with a frequency of at least 40kHz and a power of more than 100W. By controlling the frequency of the ultrasonic wave to about 20kHz, 25kHz, and 30kHz, and the ultrasonic wave frequency to about 10W / 10kg, 20W / 10kg, 30W / 10kg, 40W / 10kg, 50W / 10kg, 60W / 10kg, 70W / 10kg, and 80W / 10kg, the ultrasonic wave emitted by the ultrasonic transmitter 7 and the ultrasonic generator 8 in combination is difficult to shatter the large crystals of pyraclostrobin, but can shatter the precipitated pyraclostrobin and the small and irregular crystals. In this way, the large crystals of pyraclostrobin can be retained, and the conversion quality of the pyraclostrobin crystals can be improved.

[0058] The filter assembly includes a separation box 5 fixedly connected to the middle of the solution reflux pipe 11, a filter membrane 17 is arranged in the separation box 5, and a filter hole is opened in the filter membrane 17, the filter hole can filter the pyraclostrobin crystals and pass the pyraclostrobin precipitation particles, the pore size range of the filter hole is 20 to 40 microns, the particles of the pyraclostrobin precipitation after being broken up are 0.1 microns, and the crystals of pyraclostrobin are flakes of 60 to 70 microns. The filter holes opened can discharge the pyraclostrobin precipitation and filter the larger pyraclostrobin crystals and retain them in the separation box 5;

[0059] An opening is provided on one side of the separation box 5, and a cover plate 9 is rotatably connected in the opening. The cover plate 9 can be rotated and closed at the opening to form a seal inside the separation box 5, and a filter box 16 is slidably provided inside the separation box 5, and a filter membrane 17 is fixedly connected to the bottom of the filter box 16. When the pyraclostrobin solution enters the filter box 16 through the solution reflux pipe 11, it is filtered by the filter membrane 17 so that the pyraclostrobin precipitation and crystallization of small irregular crystals are discharged into the solution reflux pipe 11 located at the bottom of the separation box 5, and then sent to the interior of the reactor 1 by the solution reflux pipe 11 for further The cover plate 9 is further processed, and a sealing strip can be installed at the edge of the cover plate 9 to fit with the separation box 5 to improve its sealing effect. In addition to being able to rotate relative to each other, the cover plate 9 and the separation box 5 need to be stably fitted with the opening by conventional connection means in the prior art. For example, a connection port is opened on the side wall of the cover plate 9, and an electric push rod and a card are installed in the separation box 5, so that the telescopic end of the electric push rod can be fixedly connected with the card, and the telescopic end of the electric push rod pushes the card into the connection port to position the cover plate 9 and fix it with bolts and other conventional connection operations;

[0060] See also Figure 5 , Figure 6The heat exchange chamber 14 includes a partition plate 1401 fixedly connected to one side of the partition component, and a Tesla valve plate 1402 is fixedly connected in the temperature control cooling box 2. The Tesla valve plate 1402 includes a water supply channel 1403 and a plurality of reflux channels 1404. The reflux channel 1404 is connected to the inside of the water supply channel 1403. The reflux channel 1404 includes a reflux arc trough 1405, which is connected to the inside of the water supply channel 1403. The Tesla valve plate 1402 has a water outlet port that can directly flow into the inside of the reflux channel 1404, and a water inlet port that can be diverted into the reflux channel 1404. The temperature-controlled cooling box 2 inputs hot liquid through the water inlet port and then flows out from the water outlet port. When it is actually put into use, the solution reflux pipe 11 will output the hot liquid into the water supply channel 1403, and part of the liquid will hit the reflux channel 1404 and flow into the water supply channel 1403, and accelerate through the water supply channel 1403 to flow into the water supply channel 1403 again. In this way, the hot liquid can quickly reach the top space of the temperature-controlled cooling box, reducing the temperature difference between the hot liquid at the bottom and the top of the temperature-controlled cooling box, so that the temperature difference is reduced when the hot liquid enters the heat exchange chambers at different positions and heights, thereby improving the heat exchange effect of the heat exchange chambers.

[0061] Working principle:

[0062] During specific use, the pyraclostrobin raw material and other auxiliary materials are put into the reactor 1 through the material feeding pipe, and then heated by the heating mechanism inside the reactor 1, and the driving motor is started, and the driving motor drives the stirring rod to rotate to complete the mixing and condensation between the pyraclostrobin and the auxiliary materials to form a pyraclostrobin solution in a molten state, and then the pyraclostrobin solution is extracted by starting the water pump 3 and sent into the cooling channel 12 through the solution delivery pipe 4. The pyraclostrobin solution is cooled by heat exchange with the air outside the temperature control cooling box 2 using the heat conductive material of the temperature control cooling box 2 itself. At the same time, hot liquid is sent into the temperature control channel 13 from the warm water input pipe 10, and then discharged through the warm water output pipe 6. Through this bottom-up operation of transporting hot liquid, the temperature of different areas inside the temperature control channel 13 can be kept uniform, avoiding the temperature of some areas. A lower situation occurs, and a flow rate controller 15 can also be installed in the warm water input pipe 10, so that the liquid flow rate in the temperature control channel 13 can be controlled. The process of hot liquid entering and exiting the heat exchange chamber 14 and the temperature difference between the hot liquid and the pyraclostrobin solution can make the pyraclostrobin solution in the cooling channel 12 and the hot liquid in the temperature control channel 13 exchange heat, reduce the situation that the pyraclostrobin solution cools too fast, and the pyraclostrobin solution in the cooling channel 12 will flow into the separation box 5 along the solution reflux pipe 11. The pyraclostrobin precipitate with smaller particles and the pyraclostrobin crystals with smaller crystals will pass through the filter membrane 17 into the solution reflux pipe 11 and reflux along the inner wall of the pipe to the reactor 1 for heating and melting treatment again, while the pyraclostrobin crystals with larger crystals will be filtered by the filter membrane 17 and retained in the filter box 16;

[0063] When the pyraclostrobin precipitate accumulates in the filter box 16, the ultrasonic generator 8 can be started to transmit ultrasonic waves to the filter box 16 through the ultrasonic transmitter 7 to break the pyraclostrobin precipitate, so that the pyraclostrobin precipitate can flow into the solution reflux pipe 11 along with the solution through the filter membrane 17, and enter the reactor 1 along the inner wall of the solution reflux pipe 11 for further heating treatment.

[0064] It should be understood that the above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the content of the present invention and implement it accordingly. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, some simple deductions or substitutions can be made without departing from the concept of the present invention. All equivalent changes or modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A pyraclostrobin preparation device, comprising a reaction kettle (1), characterized in that: Also includes: A temperature-controlled cooling box (2), the temperature-controlled cooling box (2) having a storage space, a partition component being arranged inside the temperature-controlled cooling box (2), the partition component partitioning the storage space into a cooling channel (12) and a temperature-controlled channel (13), the temperature-controlled cooling box (2) and the partition component both being made of heat-conducting materials, a hot liquid flowing into the temperature-controlled channel (13), the temperature of the hot liquid being higher than the crystallization temperature of pyraclostrobin; A pump unit, the reactor (1) and the cooling channel (12) are connected via the pump unit, so that the pyraclostrobin solution in the reactor (1) can enter the cooling channel (12); a flow rate controller (15), the flow rate controller (15) being in communication with the interior of the cooling channel (12), the flow rate controller (15) controlling the outflow rate of the pyraclostrobin solution in the cooling channel (12) so that the interior of the cooling channel (12) is always filled with the pyraclostrobin solution; A filter assembly is connected to the reactor (1) and the flow rate controller (15). The pyraclostrobin solution flowing out of the flow rate controller (15) flows through the filter assembly and then flows into the reactor (1). The filter assembly can filter the pyraclostrobin crystals and pass through the pyraclostrobin precipitated particles.

2. A pyraclostrobin preparation device according to claim 1, characterized in that: The temperature control channel (13) comprises a plurality of heat exchange chambers (14) arranged on a partition component, wherein the plurality of heat exchange chambers (14) are distributed along the flow direction of the liquid in the temperature control channel (13), and the heat exchange chambers (14) have heat exchange ports for hot liquid to pass into the interior thereof.

3. A pyraclostrobin preparation device according to claim 1, characterized in that: The filtration assembly comprises a separation box (5), a filtration membrane (17) is arranged in the separation box (5), and a filtration hole is opened in the filtration membrane (17), wherein the filtration hole can filter the pyraclostrobin crystals and pass the pyraclostrobin precipitated particles.

4. A pyraclostrobin preparation device according to claim 3, characterized in that: An ultrasonic generator (8) is connected to one side of the separation box (5), and the ultrasonic generator (8) generates vibrations to break up the precipitate of the pyraclostrobin solution in the separation box (5).

5. A pyraclostrobin preparation device according to claim 4, characterized in that: The ultrasonic frequency emitted by the ultrasonic transmitter (7) is 20 to 30 kHz, and the ultrasonic frequency emitted by the ultrasonic transmitter (7) is 10 to 80 W / 10 kg.

6. A pyraclostrobin preparation device according to claim 1, characterized in that: The temperature of the hot liquid is 65.3°C to 90°C.

7. A pyraclostrobin preparation device according to claim 3, characterized in that: The pore size of the filter pores ranges from 20 to 40 microns.

8. A pyraclostrobin preparation device according to claim 1, characterized in that: The hot liquid inside the temperature control channel (13) enters from the bottom and exits from the top.

9. A pyraclostrobin preparation device according to claim 2, characterized in that: The heat exchange chamber (14) includes a partition plate (1401) fixedly connected to one side of the partition component. A Tesla valve plate (1402) is fixedly connected inside the temperature control cooling box (2). The Tesla valve plate (1402) includes a water supply channel (1403) and a plurality of return channels (1404). The return channel (1404) is connected to the inside of the water supply channel (1403). The return channel (1404) includes a return arc trough (1405). The return arc trough (1405) is connected to the inside of the water supply channel (1403). The Tesla valve plate (1402) has a water outlet port that can directly flow into the inside of the return channel (1404) and a water inlet port that can be diverted into the return channel (1404). The temperature control cooling box (2) inputs hot liquid through the water inlet port and then flows out from the water outlet port.

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