阅读说明：本技术 一种百菌清晶格转型装置及方法 (Chlorothalonil lattice transformation device and method ) 是由 王海波 顾林健 沙海洋 王振宇 于 2021-02-07 设计创作，主要内容包括：本发明涉及一种百菌清晶格转型装置及方法,所述百菌清晶格转型装置包括依次连接的投料装置、转型装置、粉碎装置以及气固分离装置,所述转型装置包括至少2级,所述转型装置包括串联连接的一级转型装置与二级转型装置,所述一级转型装置与所述二级转型装置分别独立地包括夹套筒体以及搅拌器。本发明所述百菌清晶格转型装置先通过一级转型装置为百菌清原料实现充分且均匀的预热,达到百菌清原料部分转型的目的,然后通过二级转型装置将预热后的百菌清实现均匀性升温并完成晶格转型,使得百菌清原料实现充分且不间断地翻转、加热以及晶格转型,具有可连续化生产、转化率高、设备选型小、设备投资小、处理能力大、节约能源、无废气排放等优点。(The invention relates to a chlorothalonil lattice transformation device and a chlorothalonil lattice transformation method, wherein the chlorothalonil lattice transformation device comprises a feeding device, a transformation device, a crushing device and a gas-solid separation device which are sequentially connected, the transformation device comprises at least 2 stages, the transformation device comprises a first-stage transformation device and a second-stage transformation device which are connected in series, and the first-stage transformation device and the second-stage transformation device respectively and independently comprise a jacket cylinder and a stirrer. The chlorothalonil lattice transformation device provided by the invention can be used for fully and uniformly preheating a chlorothalonil raw material through the primary transformation device to achieve the purpose of partial transformation of the chlorothalonil raw material, and then uniformly heating and completing lattice transformation of the preheated chlorothalonil through the secondary transformation device, so that the chlorothalonil raw material can be fully and uninterruptedly turned over, heated and subjected to lattice transformation.)

1. The utility model provides a chlorothalonil lattice transformation device, its characterized in that, chlorothalonil lattice transformation device is including the feeding device, transformation device, reducing mechanism and the gas-solid separator who connects gradually, the transformation device includes 2 grades at least, the transformation device is including series connection's one-level transformation device and second grade transformation device, one-level transformation device with second grade transformation device is respectively independently including pressing from both sides cover barrel and agitator.

2. The chlorothalonil lattice transformation device according to claim 1, wherein the jacket cylinder is a straight cylinder, a heating medium inlet is arranged at the upper part of one side of the jacket cylinder, and a heating medium outlet is arranged at the bottom of the other side of the jacket cylinder;

preferably, the length of the inner cylinder of the jacket cylinder is 2-15 m;

preferably, the diameter of the inner cylinder of the jacket cylinder is 400-1800 mm;

preferably, the thickness of the interlayer of the jacket cylinder is 50-150 mm;

preferably, the heat exchange area of the jacket cylinder is 20-200m²。

3. A chlorothalonil lattice transformation device according to claim 1 or 2, wherein a repair hole is provided at an upper portion of the jacket cylinder;

preferably, the repair hole is rectangular;

preferably, a sealing member is arranged on the repair hole.

4. A chlorothalonil lattice transformation device according to any one of claims 1-3, wherein the number of agitators is 1-4;

preferably, the stirrer comprises a hollow stirring blade and a hollow shaft, wherein the hollow stirring blade is fixedly connected to the hollow shaft to realize the connection of hollow parts, and is used for heating a medium;

preferably, the heating medium is steam or heat conducting oil;

preferably, the hollow stirring vane comprises any one of a paddle type, a screw type or a wedge type;

preferably, one end of the hollow shaft extends out of the inner cylinder and is fixedly connected to the outer cylinder body, and the other end of the hollow shaft sequentially extends out of the inner cylinder and the outer cylinder and is connected with the driving device;

preferably, the driving device comprises a driving motor, a transmission speed reducer and a transmission gear;

preferably, the driving motor is a variable frequency control motor.

5. The chlorothalonil lattice transformation device of claim 4, further comprising an anti-caking device;

preferably, the anti-caking device is a scraper and/or a hinge which are uniformly distributed on the hollow stirring blade;

preferably, the plane included angle between the scraper and the hollow stirring blade is 30-90 degrees.

6. The chlorothalonil lattice transformation device of any one of claims 1-5, wherein the feeding device comprises a feeding pipe and a feeding screw conveyor, and an outlet of the feeding screw conveyor is connected with an inlet of the primary transformation device;

preferably, the feed auger comprises a feed auger motor;

preferably, the feeding screw motor is a variable frequency controllable motor;

preferably, the outlet of the secondary transformation device is connected with the inlet of the crushing device, and the crushing device comprises a jet mill.

7. The chlorothalonil lattice transformation device according to any one of claims 1 to 6, further comprising an induced draft fan, wherein an inlet of the gas-solid separation device is connected with an outlet of the crushing device, and a gas outlet of the gas-solid separation device is connected with the induced draft fan;

preferably, the tail gas collecting ports of the primary transformation device and the secondary transformation device are both arranged at the upper part of the jacket cylinder body, and the tail gas collecting ports are both connected with the inlet of the gas-solid separation device.

8. A method for performing a chlorothalonil lattice transformation using the device of any one of claims 1-7, the method comprising:

feeding the chlorothalonil raw material into a heated first-stage transformation device through a feeding device, then feeding the chlorothalonil raw material into a heated second-stage transformation device, and then sequentially feeding the chlorothalonil raw material into a crushing device and a gas-solid separation device to obtain a target crystal form chlorothalonil product.

9. The method according to claim 8, wherein the particle size of the chlorothalonil feedstock is between 20 and 200 mesh;

preferably, the temperature of the inner cylinder of the first-stage transformation device is 50-130 ℃, the rotating speed of the stirrer is 10-40rpm, and the retention time is 1-10 h;

preferably, the temperature of the inner cylinder of the secondary transformation device is 100-200 ℃, the rotating speed of the stirrer is 20-60rpm, and the retention time is 2-8 h;

preferably, the crushing device is used for crushing the chlorothalonil after the lattice transformation to the particle size of 200-400 meshes.

10. The method according to claim 8 or 9, characterized in that the method comprises:

(1) allowing chlorothalonil raw materials with the particle size of 20-200 meshes to enter a primary transformation device through a feeding device, controlling the temperature of an inner cylinder to be 50-130 ℃, the rotating speed of a stirrer to be 10-40rpm and the retention time to be 1-10h, allowing the processed chlorothalonil to enter a secondary transformation device, controlling the temperature of the inner cylinder to be 100-200 ℃, the rotating speed of the stirrer to be 20-60rpm and the retention time to be 2-8h, and completing crystal form transformation;

(2) crushing the chlorothalonil subjected to the crystal form conversion in the step (1) to the particle size of 200-plus-400 meshes by a crushing device, and then carrying out gas-solid separation by a gas-solid separation device under the action of a draught fan to obtain a chlorothalonil product with a target crystal form; and (3) carrying out gas-solid separation on tail gas generated by the primary transformation device and the secondary transformation device in the step (1) through a gas-solid separation device.

Technical Field

The invention relates to the technical field of pesticide production, in particular to a chlorothalonil lattice transformation device and a chlorothalonil lattice transformation method.

Background

Chlorothalonil, chemically named tetrachloroisophthalonitrile, is a high-efficiency, low-toxicity, broad-spectrum and low-residue protective bactericide, is widely applied to the control of fungal diseases in agriculture and forestry, is particularly applied to economic crops such as vegetables and fruits, and is also applied to the sterilization of golf courses, lawns, ornamental plants and the like; in addition, chlorothalonil has important application in the mildew-proof industrial field, such as mildew-proof coating, mildew-proof wallpaper, mildew-proof of electric appliances, mildew-proof of wood and the like. Chlorothalonil is usually obtained by a gas phase chlorination process, and the production scale at home and abroad is continuously enlarged, so that chlorothalonil becomes one of large-tonnage excellent pesticide varieties in the world.

The technical scheme is that the chlorothalonil has three lattices, which are generally called I type, II type and III type, the stability and the efficacy of the chlorothalonil are related to the types of the lattices, the original chlorothalonil of the II type and the III type has poor stability and poor biological activity, and the product is easy to agglomerate, can only be used for industrial mildew prevention and has poor efficacy when being used as a pesticide; the type I chlorothalonil has high stability, high bioactivity, large use amount and wide application. However, in the production process of chlorothalonil, the directly obtained products are basically type II and type III, so that the type II and type III mainly obtained in the gas phase chlorination production process of chlorothalonil need to be converted into type I.

CN 201823519U discloses a novel alpha type crystal lattice chlorothalonil apparatus for producing, including jet mill, sealed warehouse, boiler and heat exchanger, complete the transformation of crystal lattice in sealed warehouse with mixed crystal lattice chlorothalonil as raw material. CN102432504A discloses a method for preparing novel alpha-type crystal lattice chlorothalonil, which is completed in the device, but the device and the method can only carry out intermittent operation, and the time required by single batch transformation is long, thus causing higher energy consumption. CN209259977U discloses equipment of chlorothalonil lattice transformation, directly put into electric heating furnace heating with chlorothalonil, but this transformation stove cylinder is longer, easily agglomerates in the transformation in-process, and the transformation is incomplete, can't directly use after the transformation, and the inside cylinder can't install the clearance hole, and the clearance is very difficult. CN207576415U discloses former medicine of chlorothalonil changes crystal form device, including chlorothalonil product charge ware, transition blender and hob type agitator, the transition blender sets up the jacket outward, but 3 sections of transition in the transition blender: the section A is a transformation area, the section B is a transformation point, the section C is a transformed transition area, and the screw stirrer for the materials in the transformed area of the section C runs in the reverse direction. The transformation mixer is long, and not only is easy to agglomerate in the transformation process and incomplete in transformation, but also has the problem of large occupied space.

In summary, there is a need to develop a novel chlorothalonil lattice transformation device and method, which have the advantages of high processing capacity, low energy consumption, high conversion rate, anti-caking property, easy cleaning, etc.

Disclosure of Invention

In view of the problems in the prior art, the invention provides a chlorothalonil lattice transformation device and a method, the chlorothalonil lattice transformation device first realizes full and uniform preheating for a chlorothalonil raw material through a primary transformation device to achieve the purpose of partial transformation of the chlorothalonil raw material, and then realizes uniform heating and lattice transformation of the preheated chlorothalonil through a secondary transformation device to ensure that the chlorothalonil raw material is fully and uninterruptedly turned over, heated and subjected to lattice transformation.

In order to achieve the purpose, the invention adopts the following technical scheme:

one of the purposes of the invention is to provide a chlorothalonil lattice transformation device, which comprises a feeding device, a transformation device, a crushing device and a gas-solid separation device which are sequentially connected, wherein the transformation device comprises at least 2 stages, the transformation device comprises a first-stage transformation device and a second-stage transformation device which are connected in series, and the first-stage transformation device and the second-stage transformation device respectively and independently comprise a jacket cylinder and a stirrer.

The chlorothalonil lattice transformation device comprises a primary transformation device and a secondary transformation device which are connected in series and have at least 2 levels, wherein the primary transformation device is used for fully and uniformly preheating chlorothalonil raw materials to achieve the purpose of partial transformation of the chlorothalonil raw materials, and then the secondary transformation device is used for uniformly heating the preheated chlorothalonil and completing lattice transformation, so that the chlorothalonil raw materials are fully and uninterruptedly turned over, heated and subjected to lattice transformation.

As a preferable technical scheme of the invention, the jacket cylinder is a straight cylinder, the upper part of one side of the jacket cylinder is provided with a heating medium inlet, and the bottom of the other side of the jacket cylinder is provided with a heating medium outlet.

Preferably, the jacket cylinder has an inner cylinder length of 2 to 15m, for example, 2m, 4m, 5m, 7m, 10m, 12m or 15m, but not limited to the values listed, and other values not listed in the above numerical range are also applicable.

Preferably, the inner diameter of the jacket cylinder is 400-1800mm, such as 400mm, 500mm, 800mm, 1000mm, 1200mm, 1500mm, 1600mm or 1800mm, but not limited to the values listed, and other values not listed in the above range of values are also applicable.

Preferably, the jacket cylinder has a thickness of 50 to 150mm, for example 50mm, 70mm, 100mm, 120mm or 150mm, but not limited to the recited values, and other values not recited within the above range of values are also applicable.

The interlayer of the jacket cylinder body refers to a pore between the inner cylinder and the outer cylinder.

Preferably, the heat exchange area of the jacket cylinder is 20-200m²E.g. 20m²、50m²、70m²、100m²、120m²、150m²、170m²Or 200m²And the like, but are not limited to the recited numerical values, and other numerical values not recited in the above numerical ranges are also applicable.

In a preferred embodiment of the present invention, a repair hole is provided in an upper portion of the jacket cylinder.

Preferably, the repair hole is rectangular and 1000 x 600mm long and wide.

Preferably, a sealing member is arranged on the repair hole.

The design of the repair hole is convenient for repairing when the device has a fault, can be used for cleaning during maintenance, and can even be used for observing the transformation degree of the internal crystal lattice.

As a preferred technical scheme of the invention, the number of the stirrers is 1-4, namely 1-4 stirrers are arranged in the same jacket cylinder, and the rotation directions of the stirrers can be the same or opposite, for example, when 2 stirrers are arranged in the same jacket cylinder, one stirrer can rotate forwards, and the other stirrer can rotate backwards, so that the maximum mixing is realized.

Preferably, the stirrer comprises a hollow stirring blade and a hollow shaft, wherein the hollow stirring blade is fixedly connected to the hollow shaft, so that the hollow part is connected, and the hollow stirring blade is used for heating a medium.

Flowing heating media are arranged at the interlayers of the jacket barrel, the hollow stirring blades and the hollow part of the hollow shaft, so that an internal heat transfer system of the device is formed, the chlorothalonil can be heated more uniformly, and the heat transfer efficiency is higher; in addition, the inner cylinder, the hollow stirring blades and the hollow shaft are made of any one of carbon steel, 304 stainless steel, 316L stainless steel, Hastelloy or Monel.

Preferably, the heating medium is steam or heat conducting oil, and compared with electric heating, the control is more stable, and the heating device has the advantages of energy conservation, cyclic utilization and the like.

Preferably, the hollow stirring vane includes any one of a paddle type, a screw type, or a wedge type.

Preferably, one end of the hollow shaft extends out of the inner cylinder and is fixedly connected to the outer cylinder, and the other end of the hollow shaft sequentially extends out of the inner cylinder and the outer cylinder and is connected with the driving device.

Preferably, the driving device comprises a driving motor, a transmission speed reducer and a transmission gear.

Preferably, the driving motor is a variable frequency control motor.

As a preferable technical scheme of the invention, the chlorothalonil lattice transformation device further comprises an anti-caking device.

Preferably, the anti-caking device is a scraper and/or a hinge which are uniformly distributed on the hollow stirring blade, so that caking materials in the jacket cylinder can be cleaned conveniently.

Preferably, the included angle between the scraper blade and the hollow stirring blade is 30-90 degrees, such as 30 degrees, 40 degrees, 50 degrees, 60 degrees, 70 degrees, 80 degrees or 90 degrees, but not limited to the enumerated values, and other values in the above-mentioned range are also applicable.

As a preferable technical scheme of the invention, the feeding device comprises a feeding pipe and a feeding screw conveyor, and an outlet of the feeding screw conveyor is connected with an inlet of the first-stage transformation device.

Preferably, the feed screw conveyor comprises a feed screw motor.

Preferably, the feeding screw motor is a variable frequency controllable motor.

Preferably, the outlet of the secondary transformation device is connected with the inlet of the crushing device, and the crushing device comprises a jet mill.

As the preferable technical scheme, the chlorothalonil lattice transformation device further comprises an induced draft fan, an inlet of the gas-solid separation device is connected with an outlet of the crushing device, a gas outlet of the gas-solid separation device is connected with the induced draft fan, and a solid outlet of the gas-solid separation device is connected with a product packaging machine.

Preferably, the tail gas collecting ports of the primary transformation device and the secondary transformation device are both arranged at the upper part of the jacket cylinder body, and the tail gas collecting ports are both connected with the inlet of the gas-solid separation device.

It is a further object of the present invention to provide a method for chlorothalonil lattice transformation using the apparatus of the object, the method comprising:

feeding the chlorothalonil raw material into a heated first-stage transformation device through a feeding device, then feeding the chlorothalonil raw material into a heated second-stage transformation device, and then sequentially feeding the chlorothalonil raw material into a crushing device and a gas-solid separation device to obtain a target crystal form chlorothalonil product.

In a preferred embodiment of the present invention, the particle size of the chlorothalonil starting material is 20 to 200 mesh, for example, 20 mesh, 50 mesh, 80 mesh, 100 mesh, 120 mesh, 150 mesh, 170 mesh or 200 mesh, but is not limited to the recited values, and other values not recited in the above numerical range are also applicable.

Preferably, the temperature of the inner cylinder of the primary conversion apparatus is 50 to 130 ℃, for example 50 ℃, 60 ℃, 70 ℃, 80 ℃, 90 ℃, 100 ℃, 110 ℃, 120 ℃ or 130 ℃, etc., the rotation speed of the stirrer is 10 to 40rpm, for example 10rpm, 15rpm, 20rpm, 25rpm, 30rpm, 35rpm or 40rpm, etc., and the residence time is 1 to 10 hours, for example 1 hour, 3 hours, 5 hours, 6 hours, 7 hours, 8 hours, 9 hours or 10 hours, etc., but not limited to the recited values, and other values not recited in the above-mentioned range of values are also applicable.

Preferably, the temperature of the inner cylinder of the secondary transformation device is 100-200 ℃, such as 100 ℃, 120 ℃, 150 ℃, 180 ℃ or 200 ℃, etc., the rotation speed of the stirrer is 20-60rpm, such as 20rpm, 25rpm, 30rpm, 35rpm, 40rpm, 45rpm, 50rpm, 55rpm or 60rpm, etc., the residence time is 2-8h, such as 2h, 2.5h, 3h, 3.5h, 4h, 4.5h, 5h, 6h or 8h, etc., but not limited to the enumerated values, and other unrecited values in the above numerical range are also applicable.

It is worth to be noted that the conditions of the first-stage transformation device and the second-stage transformation device are different, wherein the residence time and the stirring mode are controlled by the type of the hollow stirring blades, for example, the first-stage transformation device adopts the paddle type hollow stirring blades, although the propelling speed is low, the stirring is sufficient, and the second-stage transformation device adopts the spiral type hollow stirring blades, although the stirring degree is low, the heating requirement can be completely met, the lattice transformation is realized, the propelling speed is high, and the productivity is convenient to improve.

Preferably, the pulverizing device pulverizes the chlorothalonil after lattice transformation to a particle size of 200-400 meshes, such as 200-250-300-350-400 meshes, 400-400 meshes, but not limited to the recited values, and other unrecited values within the above numerical range are also applicable.

As a preferred technical solution of the present invention, the method comprises:

(1) allowing chlorothalonil raw materials with the particle size of 20-200 meshes to enter a primary transformation device through a feeding device, controlling the temperature of an inner cylinder to be 50-130 ℃, the rotating speed of a stirrer to be 10-40rpm and the retention time to be 1-10h, allowing the processed chlorothalonil to enter a secondary transformation device, controlling the temperature of the inner cylinder to be 100-200 ℃, the rotating speed of the stirrer to be 20-60rpm and the retention time to be 2-8h, and completing crystal form transformation;

(2) crushing the chlorothalonil subjected to the crystal form conversion in the step (1) to the particle size of 200-plus-400 meshes by a crushing device, and then carrying out gas-solid separation by a gas-solid separation device under the action of a draught fan to obtain a chlorothalonil product with a target crystal form; and (3) carrying out gas-solid separation on tail gas generated by the primary transformation device and the secondary transformation device in the step (1) through a gas-solid separation device.

Compared with the prior art, the invention at least has the following beneficial effects:

(1) the transformation device of the chlorothalonil lattice transformation device comprises a primary transformation device and a secondary transformation device which are connected in series, wherein the primary transformation device and the secondary transformation device are at least 2 stages, the primary transformation device is used for preheating chlorothalonil raw materials fully and uniformly to achieve the purpose of partial transformation of the chlorothalonil raw materials, and then the secondary transformation device is used for uniformly heating the preheated chlorothalonil raw materials and completing lattice transformation to ensure that the chlorothalonil raw materials are fully and uninterruptedly turned over, heated and subjected to lattice transformation;

(2) the anti-caking device can effectively avoid chlorothalonil from being heated and caked in the lattice transformation process, avoid caking from influencing heat transfer efficiency, effectively ensure the sufficiency of chlorothalonil lattice transformation and avoid the problem of low transformation rate;

(3) the chlorothalonil lattice transformation device provided by the invention uses steam or heat conduction oil to act on a heating medium, and compared with electric heating, the chlorothalonil lattice transformation device is more stable to control, has the advantages of energy conservation, cyclic utilization and the like, and greatly reduces the production cost.

Drawings

FIG. 1 is a schematic view of a chlorothalonil lattice transformation apparatus according to example 1 of the present invention;

FIG. 2 is a plan view of an anti-caking apparatus and hollow stirring vanes in the first-stage transformation apparatus according to example 1 of the present invention;

FIG. 3 is a schematic view of the direction A-A in FIG. 2;

FIG. 4 is a side view of an anti-caking apparatus and a hollow stirring blade corresponding to FIG. 3 in the two-stage transformation apparatus according to embodiment 1 of the present invention;

in the figure: 1. a feed screw conveyor; 2. a first-stage transformation device; 3. a secondary transformation device; 4. a jet mill; 5. a cyclone separator; 6. a bag-type dust collector; 7. an induced draft fan; 8. a product packaging machine;

i, a scraper; i' -a hinge; II-hollow stirring blade.

Detailed Description

The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.

To better illustrate the invention and to facilitate the understanding of the technical solutions thereof, typical but non-limiting examples of the invention are as follows:

example 1

The embodiment provides a chlorothalonil lattice transformation device, as shown in fig. 1, the chlorothalonil lattice transformation device comprises a feeding device, a transformation device, a crushing device and a gas-solid separation device which are sequentially connected, the transformation device is a 2-stage design of a first-stage transformation device 2 and a second-stage transformation device 3 which are connected in series, and the first-stage transformation device 2 and the second-stage transformation device 3 respectively and independently comprise a jacket cylinder and a stirrer;

wherein the primary transformation device 2 and the secondary transformation device 3 are arranged in the same way as follows: the corresponding jacket cylinder is a straight cylinder, a heating medium inlet is arranged at the upper part of one side of the jacket cylinder, and a heating medium outlet is arranged at the bottom of the other side of the jacket cylinder; the number of the corresponding stirrers is 2, each stirrer comprises a hollow stirring blade and a hollow shaft, and the hollow stirring blades are fixedly connected to the hollow shaft to realize connection of hollow parts for heating a medium; one end of the hollow shaft extends out of the inner cylinder and is fixedly connected to the outer cylinder, the other end of the hollow shaft sequentially extends out of the inner cylinder and the outer cylinder and is connected with a driving device, the driving device comprises a driving motor, a transmission speed reducer and a transmission gear, and the driving motor is a variable frequency control motor; 3 repair holes are arranged on the upper part of the jacket cylinder body at equal intervals, the repair holes are rectangular, the length and the width are 1000mm and 600mm, and sealing elements are arranged on the repair holes; the heating medium is steam;

the primary transformation device 2 and the secondary transformation device 3 are different in the following arrangement: the length of the inner cylinder of the jacket cylinder corresponding to the first-stage transformation device 2 is 8m, the diameter of the inner cylinder is 1000mm, the thickness of the interlayer is 100mm, and the heat exchange area is 60m²The hollow stirring blade is of a blade type; the length of the inner cylinder of the jacket cylinder body corresponding to the two-stage transformation device 3 is 12m, the diameter of the inner cylinder is 1500mm, the thickness of the interlayer is 120mm, and the heat exchange area is 80m²The hollow stirring blade is spiral;

as shown in fig. 2 and fig. 3, the primary transformation device 2 further comprises an anti-caking device, the anti-caking device is a scraper I uniformly distributed on the paddle type hollow stirring blade II, and a plane included angle between the scraper I and the hollow stirring blade II is 45 degrees; as shown in fig. 3, the secondary transformation device 3 further comprises an anti-caking device, wherein the anti-caking device is a hinge I' uniformly distributed on the spiral hollow stirring blade II;

the feeding device comprises an inlet pipe and a feeding screw conveyer 1, the outlet of the feeding screw conveyer 1 is connected with the inlet of the first-stage transformation device 2, the feeding screw conveyer 1 comprises a feeding screw motor, the feeding screw motor is a variable-frequency controllable motor, the outlet of the second-stage transformation device 3 is connected with the inlet of the crushing device, the crushing device comprises a jet mill 4, the gas-solid separation device comprises a cyclone separator 5 and a bag-type dust collector 6, the outlet of the jet mill 4 is connected with the inlet of the cyclone separator 5, the gas outlet of the cyclone separator 5 is connected with the inlet of the bag-type dust collector 6, the chlorothalonil lattice transformation device further comprises a draught fan 7, the gas outlet of the bag-type dust collector 6 is connected with the draught fan 7, the first-stage transformation device 2 and the tail gas collecting port of the second-stage transformation device 3 are both arranged on the upper part of the jacket body, the tail gas collecting ports are connected with the inlet of the bag-type dust collector 6, and the solids obtained by the cyclone separator 5 and the bag-type dust collector 6 are collected and packaged by a product packaging machine 8.

Example 2

This example provides a chlorothalonil lattice transformation device, except that the hollow stirring blades corresponding to the primary transformation device are replaced by a propeller type to be a spiral type, i.e., the hollow stirring blades of the primary transformation device and the hollow stirring blades of the secondary transformation device are both spiral type, and the other conditions are exactly the same as those in example 1.

Example 3

This example provides a chlorothalonil lattice transformation apparatus, and the conditions are exactly the same as in example 1, except that the anti-caking apparatus is omitted entirely.

Example 4

This example provides a chlorothalonil lattice transformation device, the connection relationship and the structural arrangement are the same as those of example 1, and the difference is only that:

the length of the inner cylinder of the jacket cylinder body corresponding to the primary transformation device is 2m, the diameter of the inner cylinder is 400mm, the thickness of the interlayer is 50mm, and the heat exchange area is 20m²(ii) a The length of the inner cylinder of the jacket cylinder body corresponding to the two-stage transformation device is 4m, the diameter of the inner cylinder is 800mm, the thickness of the interlayer is 100mm, and the heat exchange area is 40m²。

Example 5

This example provides a chlorothalonil lattice transformation device, the connection relationship and the structural arrangement are the same as those of example 1, and the difference is only that:

the length of the inner cylinder of the jacket cylinder body corresponding to the first-stage transformation device is 12m, the diameter of the inner cylinder is 1500mm, the thickness of the interlayer is 120mm, and the heat exchange area is 180m²(ii) a The length of the inner cylinder of the jacket cylinder corresponding to the two-stage transformation device is 15m, the diameter of the inner cylinder is 1800mm, the thickness of the interlayer is 150mm, and the heat exchange area is 200m²。

Comparative example 1

This comparative example provides a chlorothalonil lattice invigoration apparatus under exactly the same conditions as in example 1, except that the one-stage transformation apparatus was completely omitted, i.e., the 2-stage design of the transformation apparatus was modified to a 1-stage design.

Application example 1

The application example provides a method for transforming chlorothalonil lattices, which is carried out by adopting the device in example 1 and comprises the following steps:

(1) feeding a chlorothalonil raw material with the particle size of 150 meshes into a primary transformation device through a feeding device, controlling the temperature of an inner cylinder to be 80 ℃, the rotating speed of a stirrer to be 15rpm, and the retention time to be 5 hours, feeding the processed chlorothalonil into a secondary transformation device, controlling the temperature of the inner cylinder to be 150 ℃, the rotating speed of the stirrer to be 30rpm, and the retention time to be 3 hours, so as to finish crystal transformation;

(2) crushing the chlorothalonil subjected to crystal form conversion in the step (1) to 300-mesh particle size by a crushing device, and then carrying out gas-solid separation by a gas-solid separation device under the action of a draught fan to obtain a target crystal form chlorothalonil product; and (3) carrying out gas-solid separation on tail gas generated by the primary transformation device and the secondary transformation device in the step (1) through a gas-solid separation device.

The application example can realize continuous lattice transformation of chlorothalonil, the transformation process is not easy to agglomerate, the content of I-type chlorothalonil after transformation can reach 97 percent, and the treatment capacity can reach 2.5 t/h.

Application example 2

The application example provides a method for transforming chlorothalonil lattices, which is carried out by adopting the device in example 1 and comprises the following steps:

(1) feeding a chlorothalonil raw material with the particle size of 20 meshes into a primary transformation device through a feeding device, controlling the temperature of an inner cylinder to be 100 ℃, the rotating speed of a stirrer to be 40rpm, and the retention time to be 10 hours, feeding the processed chlorothalonil into a secondary transformation device, controlling the temperature of the inner cylinder to be 200 ℃, the rotating speed of the stirrer to be 60rpm, and the retention time to be 5 hours, so as to finish crystal transformation;

(2) crushing the chlorothalonil subjected to crystal form conversion in the step (1) to a particle size of 200 meshes by a crushing device, and then carrying out gas-solid separation by a gas-solid separation device under the action of a draught fan to obtain a target crystal form chlorothalonil product; and (3) carrying out gas-solid separation on tail gas generated by the primary transformation device and the secondary transformation device in the step (1) through a gas-solid separation device.

The application example can realize continuous lattice transformation of chlorothalonil, the transformation process is not easy to agglomerate, the content of I-type chlorothalonil after transformation can reach 95 percent, and the treatment capacity can reach 2.5 t/h.

Application example 3

The application example provides a method for transforming chlorothalonil lattices, which is carried out by adopting the device in example 1 and comprises the following steps:

(1) feeding a chlorothalonil raw material with the particle size of 200 meshes into a primary transformation device through a feeding device, controlling the temperature of an inner cylinder to be 50 ℃, the rotating speed of a stirrer to be 10rpm, and the retention time to be 5 hours, feeding the processed chlorothalonil into a secondary transformation device, controlling the temperature of the inner cylinder to be 150 ℃, the rotating speed of the stirrer to be 20rpm, and the retention time to be 2 hours, so as to finish crystal transformation;

(2) crushing the chlorothalonil subjected to crystal form conversion in the step (1) to a particle size of 400 meshes by using a crushing device, and then performing gas-solid separation by using a gas-solid separation device under the action of a draught fan to obtain a target crystal form chlorothalonil product; and (3) carrying out gas-solid separation on tail gas generated by the primary transformation device and the secondary transformation device in the step (1) through a gas-solid separation device.

The application example can realize continuous lattice transformation of chlorothalonil, and agglomeration is not easy to occur in the transformation process, the content of I-type chlorothalonil after transformation can reach 96%, and the treatment capacity can reach 2.5 t/h.

Application example 4

The application example provides a method for transforming chlorothalonil lattices, the method is carried out by adopting the device in the example 2, so that the retention time of the primary transformation device in the step (1) is changed from 7h to 3h, and other conditions are completely the same as those in the application example 1.

The application example can realize continuous implementation of chlorothalonil lattice transformation, and agglomeration is not easy to occur in the transformation process, but because the retention time of the primary transformation device is shortened, the raw material of chlorothalonil is not uniformly preheated, so that the content of I-type chlorothalonil after transformation is 91%, and the treatment capacity can reach 2.5 t/h.

Application example 5

The application example provides a method for transforming chlorothalonil lattices, the method is carried out by adopting the device in the embodiment 3, and other conditions are completely the same as the application example 1.

The application example can realize continuous lattice transformation of the chlorothalonil, but because an anti-caking device is not used, the phenomenon of caking is easy to occur in the transformation process, the transformation rate is not uniform, the content of the I-type chlorothalonil after transformation is only 66 percent, and the treatment capacity can reach 2.5 t/h.

Application comparative example 1

The comparative example of the application provides a method for transforming chlorothalonil lattices, which is carried out by using the device described in the comparative example 1, and other conditions are completely the same as the application example 1.

The application comparative example does not carry out the preheating treatment of the first-stage transformation device, so that the content of the I-type chlorothalonil after the transformation is 65 percent, and the transformation rate is greatly reduced.

In summary, the transformation device of the chlorothalonil lattice transformation device comprises at least 2 stages of the first-stage transformation device and the second-stage transformation device which are connected in series, the first-stage transformation device is used for fully and uniformly preheating the chlorothalonil raw material to achieve the purpose of partial transformation of the chlorothalonil raw material, and then the second-stage transformation device is used for uniformly heating the preheated chlorothalonil raw material and completing lattice transformation, so that the chlorothalonil raw material is fully and uninterruptedly turned over, heated and subjected to lattice transformation, and the transformation device has the advantages of continuous production, high transformation rate, small equipment selection, small equipment investment, high processing capacity, energy conservation, no waste gas emission and the like, and can realize large-scale production; moreover, the anti-caking device can effectively avoid the chlorothalonil from being heated and caked in the lattice transformation process, avoid the caked influence on the heat transfer efficiency, effectively ensure the lattice transformation sufficiency of the chlorothalonil and avoid the problem of low transformation rate.

The applicant declares that the present invention illustrates the detailed structural features of the present invention 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 be implemented depending on the above detailed structural features. It should be understood by those skilled in the art that any modifications of the present invention, equivalent substitutions of selected components of the present invention, additions of auxiliary components, selection of specific modes, etc., are within the scope and disclosure of the present invention.

The preferred embodiments of the present invention have been described in detail, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications may be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.

It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.

In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.