A system and method for transforming a deltamethrin lattice

Abstract

The application provides a chlorothalonil lattice transformation device system and method, the chlorothalonil lattice transformation device system includes capture discharge device, rough breaking device, pre-transformation device, crushing device, gas-solid separation device and transformation device;The pre-transformation device includes pulse material plug dense phase low-speed pneumatic conveying device;The pulse material plug dense phase low-speed pneumatic conveying device includes conveying pump and conveying pipeline arranged in series;The conveying pipeline is provided with jacket temperature control device.The chlorothalonil lattice transformation device system realizes the transformation of chlorothalonil raw drug during conveying, solves the problems of long transformation time, high energy consumption, low transformation rate and easy caking of chlorothalonil raw drug, and the transformation rate of chlorothalonil is more than 98%, and the application range is wide.

Description

Technical Field

[0001] This invention relates to the field of chemical production technology, and in particular to a chlorothalonil lattice transformation device system and method. Background Technology

[0002] Chlorothalonil, chemically known as tetrachloroisophthalonitrile, is a low-toxicity, broad-spectrum, and low-residue fungicide widely used in the control of fungal diseases in agriculture and forestry, especially in economic crops such as vegetables and fruits. Additionally, chlorothalonil has important applications in the anti-mildew industry, such as in the manufacture of anti-mildew coatings, anti-mildew wallpaper, and anti-mildew products for electrical appliances. Chlorothalonil technical material exists in two crystalline forms: Type I and Type II. In terms of biological activity, Type I is several times higher than Type II. Domestically, most chlorothalonil technical material is Type II. Therefore, actively conducting research and market development on chlorothalonil technical material formulations is of great significance in response to new international market demands.

[0003] CN201823519U discloses a novel α-lattice chlorothalonil production device, including an air jet mill (1), a sealed warehouse (2), a boiler (3), and a heat exchanger (4); the air jet mill (1) is provided with a feed inlet (5); a conveyor (6) is provided between the air jet mill (1) and the sealed warehouse (2); a high-temperature resistant pipe (7) is provided between the boiler (3) and the sealed warehouse (2); a regular pipe (8) is provided between the heat exchanger (4) and the sealed warehouse (2); and a discharge port (9) is provided on the sealed warehouse (2). However, this novel α-lattice chlorothalonil production device uses chlorothalonil with mixed lattice as raw material to complete the lattice transformation in the sealed warehouse.

[0004] CN102432504A discloses a novel method for preparing α-type lattice chlorothalonil, which is carried out in a novel α-type lattice chlorothalonil production device disclosed in CN201823519U. However, this method can only be operated intermittently, and the conversion time for a single batch is long, resulting in high energy consumption.

[0005] CN101962345A discloses a method for controlling the lattice transformation of tetrachloroisophthalonitrile, which involves directly heating chlorothalonil in an oven to prepare A-type lattice tetrachloroisophthalonitrile. However, this method suffers from incomplete conversion due to the raw materials easily agglomerating during the transformation process, and the converted product cannot be used directly.

[0006] The above-mentioned devices and methods have low conversion rates of chlorothalonil technical material, and the conversion process is time-consuming and energy-intensive. Therefore, there is an urgent need to develop a new type of chlorothalonil lattice conversion device. Summary of the Invention

[0007] In view of the problems existing in the prior art, the present invention provides a chlorothalonil lattice transformation device system and method. By reasonably setting up a coarse crushing device, a pre-transformation device, a pulverizing device and a transformation device, the chlorothalonil technical material is transformed while being transported, avoiding problems such as long transformation time, high energy consumption, low transformation rate and easy agglomeration of chlorothalonil technical material, reducing the transformation cost of chlorothalonil and improving the transformation rate.

[0008] To achieve this objective, the present invention adopts the following technical solution:

[0009] In a first aspect, the present invention provides a chlorothalonil lattice transformation device system, the chlorothalonil lattice transformation device system comprising a collection and discharge device, a coarse crushing device, a pre-transformation device, a pulverizing device, a gas-solid separation device, and a transformation device.

[0010] The collection and discharge device and the coarse crushing device are connected in series; the coarse crushing device is connected in sequence to the pre-transformation device, the pulverizing device and the gas-solid separation device, or the coarse crushing device is connected in sequence to the pulverizing device, the pre-transformation device and the gas-solid separation device; the gas-solid separation device and the transformation device are connected in series.

[0011] The pre-transformation device includes a pulse-jet dense-phase low-speed pneumatic conveying device; the pulse-jet dense-phase low-speed pneumatic conveying device includes a conveying pump and a conveying pipeline arranged in series; the conveying pipeline is equipped with a jacketed temperature control device.

[0012] The chlorothalonil lattice transformation device system described in this invention utilizes a pulse-driven, low-speed, dense-phase pneumatic conveying device powered by clean, pollution-free nitrogen. Through a controllable pulsating operation of the pulse air knife valve ("open / close"), it achieves a "static pressure difference energy" effect. This creates a high-density, slow-speed configuration of "gas and material" in the conveying pipeline, propelling the material forward. This results in a very high average solid-to-gas ratio and low compressed air consumption during material transport. Furthermore, the conveying pipeline is equipped with a jacketed temperature control device, which reduces the jacket temperature gradient along the discharge direction, i.e., counter-current heat exchange, maximizing heat exchange efficiency. This system enables simultaneous conveying and transformation of chlorothalonil technical material, avoiding the problems of long transformation time, high energy consumption, and easy agglomeration in traditional transformation processes.

[0013] The chlorothalonil lattice transformation device system of this invention is equipped with a coarse crushing device and a pulverizing device to perform two crushing processes on the chlorothalonil technical material. This ensures the particle size while improving the transformation rate of the chlorothalonil technical material. The chlorothalonil lattice transformation device system of this invention has a reasonable structural design, reducing the transformation cost of chlorothalonil. The transformed chlorothalonil product can achieve a Type I content of over 98%.

[0014] The conveying speed of the pulse plug dense phase low-speed pneumatic conveying device of the present invention is 5 to 15 m / s, for example, it can be 5 m / s, 8 m / s, 10 m / s, 12 m / s, 14 m / s or 15 m / s, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0015] Preferably, the collection and discharge device includes a collection device and a discharge device disposed at the bottom of the collection device.

[0016] Preferably, the heat exchange area of ​​the collection device is 20–100 m². 2 For example, it could be 20m 2 25m 2 30m 2 40m 2 50m 2 70m 2 80m 2 or 100m 2 This applies to, but is not limited to, the listed values; other unlisted values ​​within this range also apply.

[0017] Preferably, the trapping device includes a jacketed trap.

[0018] Preferably, the discharge device includes a scraper conveyor, which operates stably and reliably. Compared with other conveying equipment such as twin spiral conveyors and tubular chain conveyors, it will not cause the problem of chlorothalonil material sticking to the wall at high temperatures and getting stuck, thus affecting production.

[0019] Preferably, the coarse crushing device includes a hammer crusher, which can effectively crush Type II chlorothalonil raw material blocks to a certain mesh size. The equipment has low operating noise, low energy consumption, and can operate stably for a long time.

[0020] Preferably, the coarse crushing device is controlled by a variable frequency motor, which can adjust the rotation speed in a timely manner according to the feed mesh size and agglomeration, so as to meet the processing fineness requirements.

[0021] Preferably, the total length of the conveying pipeline is 30 to 150m, for example, it can be 30m, 40m, 50m, 80m, 100m, 130m or 150m, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0022] The present invention preferably uses a total length of 30-150m for the conveying pipeline, which ensures that the chlorothalonil technical material has a high conversion rate and controls the conversion time of the chlorothalonil technical material within a short range, thereby reducing the conversion cost.

[0023] Preferably, the material of the part of the pulse feed plug dense phase low-speed pneumatic conveying device that contacts the chlorothalonil material includes 304 or 316L.

[0024] Preferably, the chlorothalonil lattice transformation device system further includes a carrier gas buffer tank and a carrier gas heating device connected in sequence.

[0025] Preferably, the carrier gas heating device is connected to the pre-transformation device.

[0026] Preferably, the pulverizing device includes a vortex pulverizer, which adopts the mechanical pulverizing principle. Compared with air jet pulverizers, the pulverizing process has a thermal effect while ensuring the particle size, which is beneficial to maintaining the transition temperature.

[0027] Preferably, the pulverizing host and classifier of the vortex pulverizer are controlled by a variable frequency motor.

[0028] The vortex pulverizer described in this invention uses a variable frequency motor for its pulverizing host to flexibly adjust the pulverizing speed according to the feed particle size; the classifier uses a variable frequency motor to meet the discharge requirements of different particle sizes.

[0029] Preferably, the transformation device includes a double-helix conical transformer. The mixing component of the double-helix conical transformer consists of two asymmetrical cantilevered helices of different lengths. While rotating around their own axes (i.e., rotating on their own axis), they also revolve around the central axis of the conical container. With the help of the rotation of the helical arms, they also perform planetary motion near the wall of the cone (i.e., revolving around the central axis). This device repeatedly lifts the material through the revolution and rotation of the helices, generating a complex motion such as shearing, convection, and diffusion within the cone, thereby achieving the purpose of mixing and transformation.

[0030] Preferably, the chlorothalonil lattice transformation device system further includes a bag filter and an exhaust fan connected in sequence.

[0031] Preferably, the bag filter is connected to both a gas-solid separation device and a transformation device.

[0032] Preferably, the gas-solid separation device includes a cyclone separator.

[0033] Preferably, the filtration area of ​​the bag filter is 60–200 m². 2 For example, it could be 60m 2 80m 2 100m 2 120m 2 150m 2 180m 2 190m 2 or 200m 2 The values ​​are not limited to those listed; other unlisted values ​​within the range also apply. An electromagnetic pulse backflush device is also provided.

[0034] The electromagnetic pulse back-blowing device of the present invention is used to back-blow the filter bags in the bag filter device. This is because the chlorothalonil powder has a certain viscosity and will adhere to the surface of the filter bag.

[0035] Preferably, the filter bag material of the bag filter includes polytetrafluoroethylene needle-punched felt or metal filter bag.

[0036] Preferably, a gas-solid separation device is provided at the bottom of the gas-solid separation device.

[0037] Preferably, the bottom of the bag filter is provided with a feeder.

[0038] The airlock feeder of the present invention has a rotating impeller as its main working component, which serves both to convey materials and to provide a seal. It features an attractive and elegant appearance, a compact and reasonable structure, safe and reliable use, small size, light weight, large capacity, and low power consumption.

[0039] Preferably, the chlorothalonil lattice transformation device system further includes an automatic packaging device.

[0040] Preferably, the automatic packaging device is connected to the transfer device.

[0041] In a second aspect, the present invention also provides a method for chlorothalonil lattice transformation, wherein the chlorothalonil lattice transformation method is performed using the chlorothalonil lattice transformation device system described in the first aspect;

[0042] The chlorothalonil lattice transformation method includes the following steps:

[0043] After being cooled and sublimated by the collection and discharge device, chlorothalonil gas precipitates as type II chlorothalonil technical material. The type II chlorothalonil technical material enters the coarse crushing device for preliminary crushing and becomes type I chlorothalonil technical material.

[0044] The first chlorothalonil technical grade enters the pre-conversion device for conveying and conversion, and then enters the pulverizing device for pulverizing into the second chlorothalonil technical grade.

[0045] Alternatively, the first hundredth fungicide technical grade is pulverized in the pulverizing device and then transferred to the pre-conversion device for transformation while being conveyed, becoming the second hundredth fungicide technical grade.

[0046] After the second batch of chlorothalonil technical material is collected in the gas-solid separation device, it enters the conversion device and is converted into Type I chlorothalonil product.

[0047] The chlorothalonil lattice transformation method described in this invention involves capturing and condensing chlorothalonil gas, followed by two crushing and transformation processes. Furthermore, the transformation is carried out simultaneously within the pre-transformation device, significantly shortening the transformation time of chlorothalonil technical material, avoiding the problem of clumping during transformation, and reducing the transformation cost of chlorothalonil. This method is suitable for large-scale promotion and application.

[0048] In this invention, the first chlorothalonil technical material enters the pre-conversion device and is converted while being conveyed. The total conversion rate of the chlorothalonil technical material at the outlet of the pre-conversion device can reach 10-30%. It then continues to enter the pulverizing device, which has a certain conversion function. The total conversion rate of the second chlorothalonil technical material at the outlet of the pulverizing device can reach 20-40%. Finally, the conversion rate of the converted chlorothalonil at the outlet of the conversion device can reach more than 98%.

[0049] Preferably, the temperature of the chlorothalonil gas is 260-320°C, for example, it can be 260°C, 270°C, 280°C, 290°C, 300°C, 310°C or 320°C, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0050] Preferably, the cooling medium used in the collection device of the collection and discharge device is air with a temperature of 0 to 30°C, such as 0°C, 3°C, 5°C, 10°C, 20°C, or 30°C, but not limited to the listed values. Other unlisted values ​​within this range are also applicable. This is mainly because the chlorothalonil gas contains a small amount of hydrogen chloride gas, which avoids the risk of hydrochloric acid forming inside the collection device when using circulating water for cooling, thus preventing further corrosion and damage to the equipment.

[0051] Preferably, the outlet temperature of the collecting device in the collecting and discharging device is 140-170°C, for example, it can be 140°C, 145°C, 150°C, 155°C, 160°C, 165°C, 168°C or 170°C, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0052] Preferably, the residence time of the chlorothalonil gas in the collection device of the collection and discharge device is 10 to 30 seconds, for example, it can be 10 seconds, 12 seconds, 15 seconds, 20 seconds, 25 seconds, 28 seconds or 30 seconds, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0053] Preferably, the particle size of the type II chlorothalonil technical material entering the coarse crushing device is 50-100 mesh, for example, it can be 50 mesh, 60 mesh, 70 mesh, 80 mesh, 90 mesh, 95 mesh or 100 mesh, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0054] Preferably, the particle size of the first chlorothalonil technical material is 100-200 mesh, for example, it can be 100 mesh, 110 mesh, 130 mesh, 150 mesh, 160 mesh, 180 mesh or 200 mesh, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0055] Preferably, the insulation medium used in the jacketed temperature control device on the conveying pipeline of the pre-transformation device includes any one of steam, air or heat transfer oil, preferably heat transfer oil.

[0056] The present invention preferably uses heat transfer oil as the insulation medium in the jacketed temperature control device on the conveying pipeline of the pre-transformation device. Compared with steam and air, heat transfer oil has high internal energy, low heat loss, good heat transfer effect, stable operating temperature, and can achieve precise temperature control.

[0057] Preferably, the conveying pipeline of the pre-transformation device is divided into three sections, and the temperature of each section along the discharge direction is 100-120℃, for example, 100℃, 103℃, 105℃, 108℃, 110℃, 115℃ or 120℃, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0058] 120~130℃, for example, it can be 120℃, 121℃, 125℃, 127℃, 129℃ or 130℃, but it is not limited to the listed values. Other unlisted values ​​within this range also apply.

[0059] The temperature range is 130 to 140°C, for example, 130°C, 132°C, 135°C, 137°C, 139°C, or 140°C, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0060] The length of each section of the conveying pipeline of the pre-transformation device described in this invention is 10 to 50 m, for example, it can be 10 m, 15 m, 20 m, 25 m, 30 m, 40 m or 50 m, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0061] 10 to 50m, for example, it can be 10m, 15m, 20m, 25m, 30m, 40m or 50m, but it is not limited to the listed values. Other unlisted values ​​within this range also apply.

[0062] And 10 to 50m, for example, it can be 10m, 15m, 20m, 25m, 30m, 40m or 50m, but it is not limited to the listed values. Other unlisted values ​​within this range also apply.

[0063] By controlling the temperature of each section within a specific range, the chlorothalonil technical grade can be efficiently transformed and is less prone to clumping.

[0064] Preferably, the carrier gas in the carrier gas buffer tank is heated by the carrier gas heating device and then enters the pre-transformation device carrying the chlorothalonil technical material to achieve simultaneous transportation and transformation.

[0065] Preferably, the carrier gas includes nitrogen with a purity of ≥99.9%, such as 99.9%, 99.91%, 99.92%, 99.93%, 99.94%, 99.95%, or 99.96%, etc., but is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0066] Preferably, the carrier gas of the present invention includes nitrogen with a purity of ≥99.9%. Nitrogen is stable and rarely reacts with other substances at room temperature. As a protective gas, it can prevent dust explosions during transportation.

[0067] Preferably, the temperature of the carrier gas is 110 to 130°C, for example, it can be 110°C, 112°C, 115°C, 118°C, 120°C, 125°C, 127°C or 130°C, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0068] Preferably, the pressure of the carrier gas buffer tank is 0.8 to 1.2 MPa, for example, it can be 0.8 MPa, 0.9 MPa, 1 MPa, 1.05 MPa, 1.08 MPa, 1.1 MPa or 1.2 MPa, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0069] Preferably, the particle size of the chlorothalonil technical material after being pulverized by the pulverizing device is 200-600 mesh, for example, it can be 200 mesh, 250 mesh, 300 mesh, 400 mesh, 450 mesh, 500 mesh or 600 mesh, etc., but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0070] Preferably, the feed temperature of the crushing device is 110 to 140°C, for example, it can be 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, 138°C or 140°C, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0071] Preferably, the second 2000-micronized fungicide technical is drawn into the gas-solid separation device through the induced draft device, and a small amount of the second 2000-micronized fungicide technical enters the bag filter for further collection before entering the conversion device.

[0072] Preferably, the air volume of the exhaust fan is 5000-10000 m³ / h. 3 / h, for example, could be 5000m 3 / h, 5500m 3 / h, 6000m 3 / h, 6500m 3 / h, 7000m 3 / h、8000m3 / h、9000m 3 / h or 10000m 3 / h, etc., but not limited to the listed values; other unlisted values ​​within this range also apply.

[0073] The wind pressure is 1000 to 2000 Pa, for example, it can be 1000 Pa, 1100 Pa, 1300 Pa, 1500 Pa, 1700 Pa, 1900 Pa or 2000 Pa, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0074] Preferably, the transformation device uses a disc to control the temperature, which is 100 to 140°C. For example, it can be 100°C, 110°C, 115°C, 120°C, 125°C, 130°C, 135°C, or 140°C, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0075] The preferred temperature of the conversion device in this invention is 100–140°C to ensure a conversion rate of chlorothalonil of over 98%. Temperatures that are too low or too high will reduce the conversion rate of chlorothalonil.

[0076] Preferably, the residence time of chlorothalonil technical in the conversion device is 1 to 4.5 hours, for example, it can be 1 hour, 1.5 hours, 2 hours, 2.5 hours, 2.8 hours, 3 hours, 3.5 hours, 4 hours or 4.5 hours, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0077] Preferably, the stirring frequency of the transformation device is 2 to 10 r / min, for example, it can be 2 r / min, 3 r / min, 5 r / min, 7 r / min, 8 r / min, 8.5 r / min, 9 r / min or 10 r / min, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0078] Preferably, the heat-insulating medium used in the transformation device includes any one of steam, air, or heat transfer oil, with heat transfer oil being the most preferred.

[0079] Preferably, the conversion rate of the chlorothalonil product is above 98%, such as 98%, 98.5%, 98.8%, 99%, 99.5%, 99.7%, or 99.9%, but it is not limited to the listed values. Other unlisted values ​​within this range are also applicable.

[0080] Preferably, the transformed chlorothalonil is packaged and discharged from the packaging device.

[0081] As a preferred technical solution of the present invention, the chlorothalonil lattice transformation method includes the following steps:

[0082] The chlorothalonil gas at a temperature of 260-320℃ is cooled and sublimated by the collection and discharge device to precipitate Type II chlorothalonil technical. The Type II chlorothalonil technical with a particle size of 50-100 mesh enters the coarse crushing device for preliminary crushing and becomes Type I chlorothalonil technical with a particle size of 100-200 mesh.

[0083] The cooling medium used in the collection device of the collection device is air with a temperature of 0 to 30°C; the outlet temperature of the collection device in the collection device is 140 to 170°C; and the residence time of the chlorothalonil gas in the collection device of the collection device is 10 to 30 seconds.

[0084] The insulation medium used in the jacketed temperature control device on the conveying pipeline of the pre-transformation device includes any one of steam, air or heat transfer oil; the conveying pipeline of the pre-transformation device is divided into three sections, and the temperatures of each section along the discharge direction are 110-120℃, 120-130℃ and 130-140℃, respectively.

[0085] The carrier gas in the carrier gas buffer tank is heated by the carrier gas heating device and then enters the pre-conversion device, carrying the first chlorothalonil technical material into the pre-conversion device while being transported and converted. Then it enters the pulverizing device and is pulverized into the second chlorothalonil technical material.

[0086] Alternatively, after the first batch of 100-yam technical material is pulverized in the pulverizing device, the carrier gas in the carrier gas buffer tank enters the carrier gas heating device and is heated before entering the pre-conversion device. The pulverized first batch of 100-yam technical material is transported and transformed into the second batch of 200-yam technical material.

[0087] The carrier gas comprises nitrogen with a purity ≥ 99.9%; the temperature of the carrier gas is 110–130°C; and the pressure of the carrier gas buffer tank is 0.8–1.2 MPa.

[0088] The particle size of the chlorothalonil technical material after being pulverized by the pulverizing device is 200-600 mesh; the feed temperature of the pulverizing device is 110-140℃.

[0089] The second chlorothalonil technical material is drawn into the gas-solid separation device through the induced draft device, and after being captured, it enters the transformation device. A small amount of the second chlorothalonil technical material enters the bag dust collector for further capture, and then enters the transformation device to be transformed into Type I chlorothalonil product. The transformed chlorothalonil enters the packaging device for packaging and discharge.

[0090] The air volume of the exhaust fan is 5000-10000 m³ / h. 3 / h, wind pressure is 1000~2000Pa; the conversion device uses a plate control temperature, the temperature is 100~140℃; the residence time of chlorothalonil technical in the conversion device is 1~4.5h; the stirring frequency of the conversion device is 2~10r / min; the heat preservation medium used in the conversion device includes any one of steam, air or heat transfer oil;

[0091] The conversion rate of the chlorothalonil product is over 98%.

[0092] Compared with the prior art, the present invention has at least the following beneficial effects:

[0093] (1) The chlorothalonil crystal transformation device system provided by the present invention is reasonably designed. Through the combined action of coarse crushing device, pre-transformation device, pulverizing device and transformation device, chlorothalonil technical material is transformed while being transported, solving the problems of long transformation time, high energy consumption, low transformation rate and easy agglomeration.

[0094] (2) The chlorothalonil lattice transformation method provided by the present invention obtains chlorothalonil products with a transformation rate of over 98% by reasonably controlling the length and temperature conditions of the conveying pipeline of the pre-transformation device and through two crushing processes, which has the prospect of large-scale promotion and application. Attached Figure Description

[0095] Figure 1 This is a schematic diagram of the structure of the chlorothalonil lattice transformation device system provided in Embodiment 1 of the present invention.

[0096] In the diagram: 1-Jacketed collector; 2-Scraper conveyor; 3-Hammer crusher; 4-Pulse feed plug dense phase low-speed pneumatic conveyor; 5-Nitrogen buffer tank; 6-Nitrogen heater; 7-Vortex pulverizer; 8-Cyclone separator; 9-Bag dust collector; 10-Exhaust fan; 11-Double spiral conical converter; 12-Automatic packaging device. Detailed Implementation

[0097] The technical solution of the present invention will be further described below with reference to the accompanying drawings and specific embodiments.

[0098] The present invention will now be described in further detail. However, the examples described below are merely simplified examples of the present invention and do not represent or limit the scope of protection of the present invention. The scope of protection of the present invention is determined by the claims.

[0099] It should be understood that in the description of this invention, the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0100] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0101] Those skilled in the art should understand that the present invention necessarily includes the necessary pipelines, conventional valves and general pump equipment for achieving process integrity, but the above content is not the main inventive point of the present invention. Those skilled in the art can add layouts based on process flow and equipment structure selection, and the present invention does not make any special requirements or specific limitations in this regard.

[0102] Example 1

[0103] This embodiment provides a chlorothalonil lattice transformation device system, the structural schematic diagram of which is shown below. Figure 1 As shown.

[0104] The chlorothalonil crystallizer conversion device system includes a collection and discharge device, a hammer crusher 3, a pulse feed plug dense phase low-speed pneumatic conveying device 4, a vortex pulverizer 7, a cyclone separator 8, and a double helical conical converter 11 connected in sequence.

[0105] The pulse-driven dense-phase low-speed pneumatic conveying device 4 includes a conveying pump and a conveying pipeline connected in series; the conveying pipeline is equipped with a jacketed temperature control device.

[0106] The collection and discharge device includes a jacketed collector 1 and a scraper conveyor 2 installed at the bottom of the jacketed collector 1; the heat exchange area of ​​the jacketed collector 1 is 70 m².2 ;

[0107] The hammer crusher 3 is controlled by a variable frequency drive motor.

[0108] The total length of the conveying pipeline is 100m;

[0109] The material of the part of the pulse feed plug dense phase low-speed pneumatic conveying device 4 that comes into contact with the chlorothalonil material is 304.

[0110] The chlorothalonil crystallization device system also includes a nitrogen buffer tank 5 and a nitrogen heater 6 connected in sequence.

[0111] The nitrogen heater 6 is connected to the pulse feed plug dense phase low-speed pneumatic conveying device 4;

[0112] The pulverizer 7 uses a variable frequency motor to control both the pulverizing host and the classifier.

[0113] The chlorothalonil crystal transformation device system also includes a bag filter 9 and an induced draft fan 10 connected in sequence.

[0114] The bag filter 9 is connected to the cyclone separator 8 and the double spiral conical converter 11 respectively;

[0115] The filter area of ​​the bag filter 9 is 900m². 2 It is equipped with an electromagnetic pulse backflush device;

[0116] The filter bag material of the bag filter 9 is polytetrafluoroethylene needle-punched felt.

[0117] The bottom of the cyclone separator 8 is provided with a related air feeder; the bottom of the bag filter 9 is provided with a related air feeder.

[0118] The chlorothalonil lattice transformation device system also includes an automatic packaging device 12; the automatic packaging device 12 is connected to the double helix conical transformation machine 11.

[0119] Example 2

[0120] This embodiment provides a chlorothalonil lattice transformation device system. Except for changing the order of the pulse feed plug dense phase low-speed pneumatic conveying device and the vortex pulverizer, the chlorothalonil lattice transformation device system is the same as that in Embodiment 1. That is, the chlorothalonil lattice transformation device system includes a collection and discharge device, a hammer crusher, a vortex pulverizer, a pulse feed plug dense phase low-speed pneumatic conveying device, a gas-solid separation device, and a double spiral conical transformer connected in sequence.

[0121] Comparative Example 1

[0122] This comparative example provides a chlorothalonil lattice transformation device system, which is the same as that in Example 1 except that it does not have a pulse plug dense phase low-speed pneumatic conveying device.

[0123] Comparative Example 2

[0124] This comparative example provides a chlorothalonil lattice transformation device system, which is the same as that in Example 1 except that it does not include a vortex pulverizer.

[0125] Comparative Example 3

[0126] This comparative example provides a chlorothalonil lattice transformation device system. Except for the total length of the conveying pipeline of the pulse plug dense phase low-speed pneumatic conveying device being 25m, the chlorothalonil lattice transformation device system is the same as that in Example 1.

[0127] Comparative Example 4

[0128] This comparative example provides a chlorothalonil lattice transformation device system. Except for the total length of the conveying pipeline of the pulse plug dense phase low-speed pneumatic conveying device being 160m, the chlorothalonil lattice transformation device system is the same as that in Example 1.

[0129] Application Example 1

[0130] This application example provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Example 1; the chlorothalonil lattice transformation method includes the following steps:

[0131] After being cooled and sublimated by the collection and discharge device, the chlorothalonil gas at 300℃ precipitates as type II chlorothalonil technical. The type II chlorothalonil technical with a particle size of 80 mesh enters the coarse crushing device for preliminary crushing and becomes chlorothalonil technical with a particle size of 150 mesh.

[0132] The cooling medium used in the collection device of the collection device is air at a temperature of 20°C; the outlet temperature of the collection device in the collection device is 150°C; the residence time of the chlorothalonil gas in the collection device of the collection device is 20 seconds.

[0133] The jacketed temperature control device on the conveying pipeline of the pre-transformation device uses heat transfer oil as the insulation medium; the conveying pipeline of the pre-transformation device is divided into three sections, and the temperatures of each section along the discharge direction are 113℃, 125℃ and 134℃, respectively.

[0134] The carrier gas in the carrier gas buffer tank is heated by the carrier gas heating device and then enters the pre-conversion device, carrying the first chlorothalonil technical material into the pre-conversion device while being transported and converted. Then it enters the pulverizing device and is pulverized into the second chlorothalonil technical material.

[0135] The carrier gas is nitrogen with a purity of 99.92%; the temperature of the carrier gas is 120°C; and the pressure of the carrier gas buffer tank is 1.1 MPa.

[0136] The particle size of the chlorothalonil technical material after being pulverized by the pulverizing device is 300 mesh; the feed temperature of the pulverizing device is 130℃.

[0137] The second chlorothalonil technical material is drawn into the gas-solid separation device through the induced draft device, and after being captured, it enters the transformation device. A small amount of the second chlorothalonil technical material enters the bag dust collector for further capture, and then enters the transformation device to be transformed into Type I chlorothalonil product. The transformed chlorothalonil enters the packaging device for packaging and discharge.

[0138] The air volume of the exhaust fan is 7000m³. 3 / h, wind pressure is 1200Pa; the transformation device uses a disc control temperature, the temperature is 130℃; the residence time of chlorothalonil technical in the transformation device is 3h; the stirring frequency of the transformation device is 5r / min; the heat insulation medium used in the transformation device is heat transfer oil.

[0139] Application Example 2

[0140] This application example provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Example 1; the chlorothalonil lattice transformation method includes the following steps:

[0141] The chlorothalonil gas at a temperature of 260℃ is cooled and sublimated by the collection and discharge device to precipitate Type II chlorothalonil technical. The Type II chlorothalonil technical with a particle size of 50 mesh enters the coarse crushing device for preliminary crushing and becomes Type I chlorothalonil technical with a particle size of 100 mesh.

[0142] The cooling medium used in the collection device of the collection device is air at a temperature of 0°C; the outlet temperature of the collection device in the collection device is 170°C; the residence time of the chlorothalonil gas in the collection device of the collection device is 30 seconds.

[0143] The insulation medium used in the jacketed temperature control device on the conveying pipeline of the pre-transformation device is: The conveying pipeline of the pre-transformation device is divided into three sections, and the temperatures of each section along the discharge direction are 110℃, 130℃ and 140℃, respectively.

[0144] After the first batch of fungicides is pulverized in the pulverizing device, the carrier gas in the carrier gas buffer tank is heated by the carrier gas heating device and then enters the pre-conversion device, carrying the pulverized first batch of fungicides into the pre-conversion device. It is transformed into second batch of fungicides while being transported.

[0145] The carrier gas is nitrogen with a purity of 99.9%; the temperature of the carrier gas is 110°C; and the pressure of the carrier gas buffer tank is 1.2 MPa.

[0146] The particle size of the chlorothalonil technical material after being pulverized by the pulverizing device is 600 mesh; the feed temperature of the pulverizing device is 140℃.

[0147] The second chlorothalonil technical material is drawn into the gas-solid separation device through the induced draft device, and after being captured, it enters the transformation device. A small amount of the second chlorothalonil technical material enters the bag dust collector for further capture, and then enters the transformation device to be transformed into Type I chlorothalonil product. The transformed chlorothalonil enters the packaging device for packaging and discharge.

[0148] The air volume of the exhaust fan is 10000m³. 3 / h, wind pressure is 2000Pa; the conversion device uses a disc control temperature, the temperature is 140℃; the residence time of chlorothalonil technical in the conversion device is 1h; the stirring frequency of the conversion device is 10r / min; the heat preservation medium used in the conversion device is air.

[0149] Application Example 3

[0150] This application example provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Example 1; the chlorothalonil lattice transformation method includes the following steps:

[0151] The chlorothalonil gas at a temperature of 320℃ is cooled and sublimated by the collection and discharge device to precipitate Type II chlorothalonil technical. The Type II chlorothalonil technical with a particle size of 100 mesh enters the coarse crushing device for preliminary crushing and becomes Type I chlorothalonil technical with a particle size of 200 mesh.

[0152] The cooling medium used in the collection device of the collection device is air at a temperature of 30°C; the outlet temperature of the collection device in the collection device is 140°C; the residence time of the chlorothalonil gas in the collection device of the collection device is 10 seconds.

[0153] The insulation medium used by the jacketed temperature control device on the conveying pipeline of the pre-transformation device is air; the conveying pipeline of the pre-transformation device is divided into three sections, and the temperatures of each section along the discharge direction are 113℃, 127℃ and 133℃, respectively.

[0154] The carrier gas in the carrier gas buffer tank is heated by the carrier gas heating device and then enters the pre-conversion device, carrying the first chlorothalonil technical material into the pre-conversion device while being transported and converted. Then it enters the pulverizing device and is pulverized into the second chlorothalonil technical material.

[0155] The carrier gas is nitrogen with a purity of 99.95%; the temperature of the carrier gas is 130°C; and the pressure of the carrier gas buffer tank is 0.8 MPa.

[0156] The particle size of the chlorothalonil technical material after being pulverized by the pulverizing device is 200 mesh; the feed temperature of the pulverizing device is 110℃.

[0157] The second chlorothalonil technical material is drawn into the gas-solid separation device through the induced draft device, and after being captured, it enters the transformation device. A small amount of the second chlorothalonil technical material enters the bag dust collector for further capture, and then enters the transformation device to be transformed into Type I chlorothalonil product. The transformed chlorothalonil enters the packaging device for packaging and discharge.

[0158] The air volume of the exhaust fan is 5000m³. 3 / h, wind pressure is 1000Pa; the transformation device uses a plate control temperature, the temperature is 100℃; the residence time of chlorothalonil technical in the transformation device is 4.5h; the stirring frequency of the transformation device is 2r / min; the heat insulation medium used in the transformation device is heat transfer oil.

[0159] Application Example 4

[0160] This application example provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Example 2; the chlorothalonil lattice transformation method is the same as in Application Example 1.

[0161] Application Example 5

[0162] This application example provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Example 1; the chlorothalonil lattice transformation method is the same as in Application Example 1, except that the temperature of the transformation device is replaced with 150°C.

[0163] Application Example 6

[0164] This application example provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Example 1; the chlorothalonil lattice transformation method is the same as in Application Example 1, except that the temperature of the transformation device is replaced with 90°C.

[0165] Application Comparative Example 1

[0166] This application provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Comparative Example 1; the chlorothalonil lattice transformation method is the same as that in Application Example 1.

[0167] Application Comparative Example 2

[0168] This application provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Comparative Example 2; the chlorothalonil lattice transformation method is the same as that in Application Example 1.

[0169] Application Comparative Example 3

[0170] This application provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Comparative Example 3; the chlorothalonil lattice transformation method is the same as that in Application Example 1.

[0171] Application Comparative Example 4

[0172] This application provides a chlorothalonil lattice transformation method, which is performed using the chlorothalonil lattice transformation device system described in Comparative Example 4; the chlorothalonil lattice transformation method is the same as that in Application Example 1.

[0173] The transformation rate of the transformed chlorothalonil obtained from the above application examples and comparative examples was determined, and the results are shown in Table 1.

[0174] Table 1

[0175]

[0176]

[0177] As can be seen from Table 1:

[0178] (1) As can be seen from the comprehensive application examples 1 to 4, the chlorothalonil lattice transformation device system and method provided by the present invention realize the transformation of chlorothalonil technical material while it is being transported, and finally obtained a type I chlorothalonil product with a transformation rate of more than 98%.

[0179] (2) It can be seen from the combined application examples 1 and 5-6 that the temperature of the conversion device in application example 5 is higher, at 150℃, while the temperature of the conversion device in application example 6 is lower, at 90℃, both of which lead to a decrease in the conversion rate of chlorothalonil.

[0180] (3) It can be seen from the comprehensive application example 1 and application comparison example 1 that the application comparison example 1 uses the chlorothalonil lattice transformation device system described in comparison example 1. This chlorothalonil lattice transformation device system does not have a pulse plug dense phase low-speed pneumatic conveying device, which cannot realize the chlorothalonil technical material is conveyed and transformed at the same time, resulting in problems such as long transformation time and high energy consumption.

[0181] (4) It can be seen from the combined application example 1 and application comparison example 2 that application comparison example 2 uses the chlorothalonil lattice transformation device system described in comparison example 2. This chlorothalonil lattice transformation device system does not have a pulverizing device, vortex pulverizer, which will result in incomplete transformation of chlorothalonil technical material, easy agglomeration, and low transformation rate.

[0182] (5) Combining Application Example 1 with Application Comparative Examples 3 and 4, it can be seen that Application Comparative Example 3 uses the chlorothalonil lattice transformation device system described in Comparative Example 3. The total length of the conveying pipeline of the pulse plug dense phase low-speed pneumatic conveying device in the chlorothalonil lattice transformation device system is 25m. The conveying pipeline is relatively short, resulting in a shorter transformation time for chlorothalonil technical material and a significant reduction in the transformation rate. Application Comparative Example 4 uses the chlorothalonil lattice transformation device system described in Comparative Example 4. The total length of the conveying pipeline of the pulse plug dense phase low-speed pneumatic conveying device in the chlorothalonil lattice transformation device system is 160m. The conveying pipeline is relatively long, resulting in an increased transformation time for chlorothalonil technical material. Although the transformation rate is guaranteed, the investment cost of the pneumatic conveying equipment is greatly increased due to excessive conveying resistance, which is economically unreasonable.

[0183] The applicant declares that the detailed structural features of the present invention are illustrated through the above embodiments, but the present invention is not limited to the above detailed structural features, that is, it does not mean that the present invention must rely on the above detailed structural features to be implemented. Those skilled in the art should understand that any improvements to the present invention, equivalent substitutions for the components selected in the present invention, additions of auxiliary components, selection of specific methods, etc., all fall within the protection scope and disclosure scope of the present invention.

[0184] The preferred embodiments of the present invention have been described in detail above. However, the present invention is not limited to the specific details in the above embodiments. Within the scope of the technical concept of the present invention, various simple modifications can be made to the technical solution of the present invention, and these simple modifications all fall within the protection scope of the present invention.

Claims

1. A chlorothalonil lattice transformation device system, characterized in that, The chlorothalonil crystallizer transformation device system includes a collection and discharge device, a coarse crushing device, a pre-transformation device, a pulverizing device, a gas-solid separation device, and a transformation device. The collection and discharge device and the coarse crushing device are connected in series; the coarse crushing device is connected in sequence to the pre-transformation device, the pulverizing device and the gas-solid separation device, or the coarse crushing device is connected in sequence to the pulverizing device, the pre-transformation device and the gas-solid separation device; the gas-solid separation device and the transformation device are connected in series. The pre-transformation device includes a pulse-jet dense-phase low-speed pneumatic conveying device; the pulse-jet dense-phase low-speed pneumatic conveying device includes a conveying pump and a conveying pipeline arranged in series; the conveying pipeline is equipped with a jacketed temperature control device; the total length of the conveying pipeline is 30~150m.

2. The device system according to claim 1, characterized in that, The collection and discharge device includes a collection device and a discharge device located at the bottom of the collection device.

3. The device system according to claim 2, characterized in that, The heat exchange area of ​​the collection device is 20~100m². 2 .

4. The device system according to claim 2, characterized in that, The trapping device includes a jacketed trap.

5. The device system according to claim 2, characterized in that, The discharge device includes a scraper conveyor.

6. The device system according to claim 1, characterized in that, The coarse crushing device includes a hammer crusher.

7. The device system according to claim 1, characterized in that, The coarse crushing device is controlled by a frequency converter motor.

8. The device system according to claim 1, characterized in that, The material of the part of the pulse feeder dense phase low-speed pneumatic conveying device that comes into contact with the chlorothalonil material includes 304 or 316L.

9. The device system according to claim 1, characterized in that, The chlorothalonil lattice transformation device system also includes a carrier gas buffer tank and a carrier gas heating device connected in sequence.

10. The apparatus system according to claim 9, characterized in that, The carrier gas heating device is connected to the pre-transformation device.

11. The apparatus system according to claim 1, characterized in that, The pulverizing device includes a vortex pulverizer.

12. The apparatus system according to claim 11, characterized in that, The vortex pulverizer's pulverizing host and classifier are controlled by variable frequency motors.

13. The apparatus system according to claim 1, characterized in that, The transformation device includes a double-helix conical transformation machine.

14. The apparatus system according to claim 1, characterized in that, The chlorothalonil lattice transformation device system also includes a bag filter and an exhaust fan connected in sequence.

15. The apparatus system according to claim 14, characterized in that, The bag filter is connected to the gas-solid separation device and the transformation device, respectively.

16. The apparatus system according to claim 14, characterized in that, The filter area of ​​the bag filter is 60~200m². 2 It is equipped with an electromagnetic pulse backflush device.

17. The apparatus system according to claim 14, characterized in that, The filter bag material of the bag filter includes polytetrafluoroethylene needle-punched felt or metal filter bag.

18. The apparatus system according to claim 1, characterized in that, The bottom of the gas-solid separation device is equipped with a pneumatic feeder.

19. The apparatus system according to claim 14, characterized in that, The bottom of the bag filter is equipped with a feeder.

20. The apparatus system according to claim 1, characterized in that, The chlorothalonil lattice transformation device system also includes an automatic packaging device.

21. The apparatus system according to claim 20, characterized in that, The automatic packaging device is connected to the transformation device.

22. A method for chlorothalonil lattice transformation, characterized in that, The chlorothalonil lattice transformation method is performed using the chlorothalonil lattice transformation device system according to any one of claims 1 to 21; The chlorothalonil lattice transformation method includes the following steps: After being cooled and sublimated by the collection and discharge device, chlorothalonil gas precipitates as type II chlorothalonil technical material. The type II chlorothalonil technical material enters the coarse crushing device for preliminary crushing and becomes type I chlorothalonil technical material. The first chlorothalonil technical grade enters the pre-conversion device for conveying and conversion, and then enters the pulverizing device for pulverizing into the second chlorothalonil technical grade. Alternatively, the first hundredth fungicide technical grade is pulverized in the pulverizing device and then transferred to the pre-conversion device for transformation while being conveyed, becoming the second hundredth fungicide technical grade. After the second batch of chlorothalonil technical material is collected in the gas-solid separation device, it enters the conversion device and is converted into Type I chlorothalonil product.

23. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The temperature of the chlorothalonil gas is 260~320℃.

24. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The cooling medium used in the collection device of the collection and discharge device is air with a temperature of 0~30℃.

25. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The outlet temperature of the collecting device in the collecting and discharging device is 140~170℃.

26. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The residence time of the chlorothalonil gas in the collection device of the collection and discharge device is 10-30 seconds.

27. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The particle size of the Type II chlorothalonil technical material entering the coarse crushing device is 50-100 mesh.

28. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The particle size of the first chlorothalonil technical grade is 100-200 mesh.

29. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The insulation medium used in the jacketed temperature control device on the conveying pipeline of the pre-transformation device includes any one of steam, air, or heat transfer oil.

30. The chlorothalonil lattice transformation method according to claim 29, characterized in that, The insulation medium used in the jacketed temperature control device on the conveying pipeline of the pre-transformation device is heat transfer oil.

31. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The conveying pipeline of the pre-transformation device is divided into three sections, with temperatures of 110~120℃, 120~130℃ and 130~140℃ respectively along the discharge direction.

32. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The carrier gas in the carrier gas buffer tank is heated by the carrier gas heating device and then enters the pre-conversion device, carrying the chlorothalonil technical material to achieve simultaneous transportation and conversion.

33. The chlorothalonil lattice transformation method according to claim 32, characterized in that, The carrier gas includes nitrogen with a purity of ≥99.9%.

34. The chlorothalonil lattice transformation method according to claim 32, characterized in that, The temperature of the carrier gas is 110~130℃.

35. The chlorothalonil lattice transformation method according to claim 32, characterized in that, The pressure of the carrier gas buffer tank is 0.8~1.2MPa.

36. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The particle size of the chlorothalonil technical material after being pulverized by the pulverizing device is 200-600 mesh.

37. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The feed temperature of the crushing device is 110~140℃.

38. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The 200-type fungicide technical material is drawn into the gas-solid separation device through the induced draft device. A small amount of the 200-type fungicide technical material enters the bag filter for further collection before entering the conversion device.

39. The chlorothalonil lattice transformation method according to claim 38, characterized in that, The air volume of the exhaust fan is 5000~10000m³. 3 / h, wind pressure is 1000~2000Pa.

40. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The transformation device uses a control panel to regulate temperature, with a temperature range of 100~140℃.

41. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The residence time of the chlorothalonil technical material in the conversion device is 1~4.5h.

42. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The stirring frequency of the transformation device is 2~10 r / min.

43. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The insulation medium used in the conversion device includes any one of steam, air, or heat transfer oil.

44. The chlorothalonil lattice transformation method according to claim 43, characterized in that, The heat-conducting medium used in the transformation device is heat-conducting oil.

45. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The conversion rate of the chlorothalonil product is over 98%.

46. ​​The chlorothalonil lattice transformation method according to claim 22, characterized in that, The transformed chlorothalonil enters the packaging unit for packaging and discharge.

47. The chlorothalonil lattice transformation method according to claim 22, characterized in that, The chlorothalonil lattice transformation method includes the following steps: The chlorothalonil gas at a temperature of 260~320℃ is cooled and sublimated by the collection and discharge device to precipitate Type II chlorothalonil technical. The Type II chlorothalonil technical with a particle size of 50~100 mesh enters the coarse crushing device for preliminary crushing and becomes Type I chlorothalonil technical with a particle size of 100~200 mesh. The cooling medium used in the collection device of the collection device is air with a temperature of 0~30℃; the outlet temperature of the collection device in the collection device is 140~170℃; the residence time of the chlorothalonil gas in the collection device of the collection device is 10~30s. The insulation medium used in the jacketed temperature control device on the conveying pipeline of the pre-transformation device includes any one of steam, air or heat transfer oil; the conveying pipeline of the pre-transformation device is divided into three sections, and the temperatures of each section along the discharge direction are 110~120℃, 120~130℃ and 130~140℃, respectively. The carrier gas in the carrier gas buffer tank is heated by the carrier gas heating device and then enters the pre-conversion device, carrying the first chlorothalonil technical material into the pre-conversion device while being transported and converted. Then it enters the pulverizing device and is pulverized into the second chlorothalonil technical material. Alternatively, after the first batch of 100-yam technical material is pulverized in the pulverizing device, the carrier gas in the carrier gas buffer tank enters the carrier gas heating device and is heated before entering the pre-conversion device. The pulverized first batch of 100-yam technical material is transported and transformed into the second batch of 200-yam technical material. The carrier gas includes nitrogen with a purity of ≥99.9%; the temperature of the carrier gas is 110~130℃; the pressure of the carrier gas buffer tank is 0.8~1.2MPa; The particle size of the chlorothalonil technical material after being pulverized by the pulverizing device is 200~600 mesh; the feed temperature of the pulverizing device is 110~140℃; The second chlorothalonil technical material is drawn into the gas-solid separation device through the induced draft device, and after being captured, it enters the transformation device. A small amount of the second chlorothalonil technical material enters the bag dust collector for further capture, and then enters the transformation device to be transformed into Type I chlorothalonil product. The transformed chlorothalonil enters the packaging device for packaging and discharge. The air volume of the exhaust fan is 5000~10000m³. 3 / h, wind pressure is 1000~2000Pa; the conversion device uses a plate to control the temperature, the temperature is 100~140℃; the residence time of the chlorothalonil technical in the conversion device is 1~4.5h; the stirring frequency of the conversion device is 2~10r / min; the heat preservation medium used in the conversion device includes any one of steam, air or heat transfer oil; The conversion rate of the chlorothalonil product is over 98%.

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