A process for the production of ethyl dicyanopropionate

Abstract

The application discloses a processing technology of ethyl dicyanopropionate, and comprises the following specific steps: S1, preparing raw materials, storing liquid raw materials uniformly for standby, and placing solid raw material ethyl cyanoacetate in a humid environment with certain humidity to make it lump; S2, pre-treating the lumped ethyl cyanoacetate by using a pre-treatment device, and then crushing the lumped ethyl cyanoacetate after component separation; S3, mixing the ethyl cyanoacetate with a potassium cyanide solution, and then slowly adding a formaldehyde solution into the mixture for reaction; S4, separating the organic layer from the reaction liquid, extracting the water layer by using a solvent dimethyl sulfoxide, mixing the organic layers, and finally obtaining ethyl dicyanopropionate finished products after drying and desolventizing; in the step S2, the pre-treatment device comprises a storage mechanism, a high-frequency vibration device and an ejection mechanism; the processing technology of ethyl dicyanopropionate disclosed by the application has the effect of reducing the exposure amount of dust, thereby providing effective protection for the personal safety of workers.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of ethyl dicyanopropionate preparation, in particular to a processing technology of ethyl dicyanopropionate. BACKGROUND

[0002] Ethyl dicyanopropionate is an important intermediate for synthesizing phenylpyrazole insecticides. The phenylpyrazole insecticides prepared from ethyl dicyanopropionate have a wide insecticidal spectrum, have a strong control ability on chloride metabolism controlled by insect gamma-aminobutyric acid, can kill pests from the aspects of stomach toxicity, contact killing and systemic absorption, are mainly used for preventing and treating aphids, leafhoppers, lice, lepidopteran larvae, flies and coleopteran pests, have no crop phytotoxicity, and are operated in the modes of soil and foliar spraying, and have a long drug effect, so the phenylpyrazole insecticides have great demands in the aspects of health and seed coating agents for corn and the like.

[0003] When ethyl cyanoacetate in ethyl dicyanopropionate is treated, the ethyl cyanoacetate is a solid raw material with a high ethyl dicyanopropionate content, and the ethyl cyanoacetate itself is toxic, so part of the ethyl cyanoacetate is caked during transportation, and thus the caked ethyl cyanoacetate needs to be crushed before mixing. During the crushing process and the transfer and weighing processes after the crushing process, dust is brought into the air, and when workers operate in the working environment, the dust can easily enter the nasal cavity through protective articles such as masks, and long-term operation can affect the health of the workers. SUMMARY

[0004] The application discloses a processing technology of ethyl dicyanopropionate, and aims to solve the technical problem that dust is brought into the air during the crushing process and the transfer and weighing processes after the crushing process, the dust can easily enter the nasal cavity through protective articles such as masks when workers operate in the working environment, and long-term operation can affect the health of the workers.

[0005] In order to achieve the above-mentioned purpose, the application adopts the following technical scheme:

[0006] The application discloses a processing technology of ethyl dicyanopropionate, and aims to solve the technical problem that dust is brought into the air during the crushing process and the transfer and weighing processes after the crushing process, the dust can easily enter the nasal cavity through protective articles such as masks when workers operate in the working environment, and long-term operation can affect the health of the workers.

[0007] S1: raw materials are prepared, liquid raw materials are uniformly stored for later use, and solid raw material ethyl cyanoacetate is placed in a humid environment with a certain humidity to make the ethyl cyanoacetate caked;

[0008] S2: the caked ethyl cyanoacetate is pretreated by using a pretreatment device, and is crushed after being weighed;

[0009] S3: the ethyl cyanoacetate is mixed with a potassium cyanide solution, and then formaldehyde solution is slowly added to the mixture to react;

[0010] S4: the reaction solution is divided into an organic layer, the water layer is extracted with dimethyl sulfoxide, the mixed organic layer is dried and desolventized, and finally ethyl dicyanopropionate product is obtained;

[0011] In S2, the pretreatment device comprises a storage mechanism, a high-frequency vibration device and an ejection mechanism, the storage mechanism comprises an outer support bin, the bottom end of the outer support bin is connected with a bottom adjusting mechanism, the opposite two side inner walls of the outer support bin are provided with an inlet and an outlet, and the outer walls of the inlet and the outlet are simultaneously covered with a translation sealing door;

[0012] The inner wall of the outer support bin is connected with a support frame in a fit manner, a sealing ring is arranged at the connection position between the support frame and the inner wall of the outer support bin, a breathable film is fixedly laid in the support frame, a plurality of first springs are simultaneously connected to the top end of the support frame and the inner wall of the top end of the outer support bin, a clamping port is fixedly connected to the outer wall of the top end of the support frame, and a partition plate is arranged at the inner wall of the bottom end of the outer support bin;

[0013] The high-frequency vibration device comprises a high-frequency vibration head, and the high-frequency vibration head is attached to the surface of the breathable film.

[0014] By arranging the storage mechanism and the high-frequency vibration device, the ethyl cyanoacetate is pretreated by agglomeration, directly placed in an environment with a certain humidity to make it uniformly agglomerated into small pieces, and the dust is attached to the surface of the agglomerated pieces, which directly reduces the amount of dust generated in the transfer process to a great extent. At the same time, by directly placing the ethyl cyanoacetate in the outer support bin, the quantified ethyl cyanoacetate is in a relatively sealed space, which is also convenient for the quantitative addition of ethyl cyanoacetate in the later stage. With the use of a conveying belt or other conveying equipment to convey the outer support bin, when it reaches the position of the high-frequency vibration device, the vibration of the high-frequency vibration head makes the ethyl cyanoacetate crushed into powder, so that the crushing and quantitative treatment of ethyl cyanoacetate in a relatively sealed environment is realized, the exposure amount of dust is reduced, and the personal safety of the workers is effectively protected.

[0015] In a preferred scheme, the bottom adjusting mechanism comprises a bottom support bin, a moving bottom plate is movably connected to the top end of the bottom support bin, the moving bottom plate and the partition plate are connected through a hinge, a second elastic sealing piece is simultaneously connected to the top end connection position of the partition plate and the moving bottom plate, a first elastic sealing piece is fixedly connected to the other side outer wall of the moving bottom plate, one end of the first elastic sealing piece is fixed to the inner wall of one side of the outer support bin, a connecting rod is connected to the bottom end outer wall of the moving bottom plate through a first hinged seat, and the other end of the connecting rod is connected to an air cylinder through a second hinged seat, and the air cylinder is fixed in the bottom support bin.

[0016] S2 further comprises the following specific steps:

[0017] S21: the air cylinder is extended, the supporting angle of the connecting rod is changed, and the moving bottom plate is inclined in the outer support bin.

[0018] S22: Quantitative weighing of ethyl cyanoacetate, and placing into the outer support bin, connecting rod homing;

[0019] S23: Close the translation sealing door, and transport the storage mechanism through the conveyor belt;

[0020] S24: Transport to the high-frequency vibration equipment, and the high-frequency vibration head drives the air-permeable film to press down, and then crush the ethyl cyanoacetate by high-frequency vibration.

[0021] By setting the bottom adjusting mechanism, the movable bottom plate can be inclined in the outer support bin, and when the ethyl cyanoacetate is filled through the inlet, the inclined movable bottom plate can guide it to be placed smoothly on the top end of the partition plate. When the movable bottom plate is homed, the ethyl cyanoacetate inside the outer support bin can be flat, thereby facilitating the subsequent vibration crushing operation.

[0022] In a preferred scheme, the ejection mechanism includes a side support, and one side of the side support is fixedly connected with a driving seat, a guide rail is inserted in the driving seat, one side of the guide rail is fixedly connected with an L-shaped support frame, one side of the L-shaped support frame is fixedly connected with a limiting plate, and a supporting rod is inserted in the L-shaped support frame and the limiting plate at the same time. The outer wall of the supporting rod is fixedly connected with a second spring, and the other end of the second spring is connected with the L-shaped support frame. The bottom end of the supporting rod is fixedly connected with a rack, and the bottom end of the rack is fixedly connected with a bidirectional telescopic driving seat. The bidirectional telescopic driving seat includes two telescopic ends, and the two telescopic ends are respectively fixedly connected with plugs. The two plugs can be inserted into the clamping interfaces. One side of the rack is engaged with a missing tooth gear, and one side of the missing tooth gear is fixedly connected with a motor.

[0023] The S24 further includes the following specific steps:

[0024] S25: The crushed ethyl cyanoacetate is transported again through the conveyor belt, and is transported to the discharging area.

[0025] S26: The air blower and the mixing conveying channel are connected through the inlet and the outlet respectively, and the ethyl cyanoacetate powder is blown into the mixing conveying channel by the air blower.

[0026] S27: The support frame is connected with the bidirectional telescopic driving seat at the same time, and the support frame is ejected to assist the powder to fall.

[0027] By setting the ejection mechanism, the support frame is repeatedly ejected by the ejection mechanism, so that the ethyl cyanoacetate powder adhered to the air-permeable film falls, avoiding waste of materials. At the same time, the material is discharged by blowing, and the other end can be connected with the mixing conveying channel by the air blower, so as to quickly transfer the powder in the relatively sealed space.

[0028] From the above, a kind of processing technology of ethyl dicyanopropionate, comprising the following specific steps: S1: ready raw materials, liquid raw material is uniformly stored for future use, and the solid raw material ethyl cyanoacetate is placed in certain humidity humid environment to make it cake;S2: after the cake of ethyl cyanoacetate is pretreated using pretreatment equipment, it is after the component again fragmentation treatment;S3: ethyl cyanoacetate is mixed with potassium cyanide solution, then slowly add formaldehyde solution to it to react;S4: the organic layer is separated from the reaction liquid, the water layer is extracted with solvent dimethyl sulfoxide, the mixed organic layer is finally obtained after drying, desolventizing and obtaining ethyl dicyanopropionate finished product;In the S2, the pretreatment equipment includes storage mechanism, high-frequency vibration equipment and ejection mechanism, the storage mechanism includes outer support bin, and the bottom of outer support bin is connected with bottom adjusting mechanism, and the opposite two sides of outer support bin are provided with inlet and outlet on the inner wall, and the outer wall of inlet and outlet is covered with translational sealing door simultaneously;The inner wall of outer support bin is connected with support frame, and the connecting place of support frame and the inner wall of outer support bin is provided with sealing ring, and the support frame is fixed with breathable membrane, and the top of support frame and the inner wall of the top of outer support bin are connected with a plurality of first springs simultaneously, the top outer wall of support frame is fixedly connected with clamping port, and the bottom inner wall of outer support bin is provided with partition;The high-frequency vibration equipment includes high-frequency vibration head, and the high-frequency vibration head is attached to the surface of breathable membrane.The processing technology of ethyl dicyanopropionate provided by the application can realize the fragmentation treatment and quantitative treatment of ethyl cyanoacetate in a relatively sealed environment, reduce the exposure of dust, and effectively protect the personal safety of workers. BRIEF DESCRIPTION OF DRAWINGS

[0029] Figure 1 The storage mechanism and high-frequency vibration equipment connection structure diagram of the pretreatment equipment of the processing technology of ethyl dicyanopropionate proposed in the application.

[0030] Figure 2 The storage mechanism and ejection mechanism connection structure diagram of the pretreatment equipment of the processing technology of ethyl dicyanopropionate proposed in the application.

[0031] Figure 3 The ejection mechanism structure diagram of the processing technology of ethyl dicyanopropionate proposed in the application.

[0032] Figure 4 The internal structure diagram of the storage mechanism of the processing technology of ethyl dicyanopropionate proposed in the application.

[0033] Figure 5 The cross-sectional view of the storage mechanism of the processing technology of ethyl dicyanopropionate proposed in the application.

[0034] Figure 6A specific flow chart of a processing process of ethyl dicyanopropionate is provided for the present application.

[0035] In the figure: 1, storage mechanism; 2, high-frequency vibration head; 3, high-frequency vibration device; 4, ejection mechanism; 5, bottom adjusting mechanism; 6, translation sealing door; 101, outer supporting bin; 102, supporting frame; 103, clamping interface; 104, breathable film; 105, first spring; 106, feeding port; 107, sealing ring; 108, partition plate; 109, discharge port; 401, two-way telescopic drive seat; 402, rack; 403, missing tooth gear; 404, supporting rod; 405, limiting plate; 406, second spring; 407, L-shaped support frame; 408, side support; 409, motor; 410, guide rail; 411, drive seat; 412, plug; 501, first elastic sealing piece; 502, bottom supporting bin; 503, moving bottom plate; 504, first hinged seat; 505, connecting rod; 506, second hinged seat; 507, air rod; 508, second elastic sealing piece. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all.

[0037] The processing process of ethyl dicyanopropionate disclosed in the present application is mainly applied to the scene of preparation of ethyl dicyanopropionate.

[0038] Reference Figures 1-6 A processing process of ethyl dicyanopropionate, comprising the following specific steps:

[0039] S1: Prepare raw materials, store liquid raw materials uniformly for standby, and place solid raw material ethyl cyanoacetate in a humid environment with a certain humidity to make it lump;

[0040] S2: The lumped ethyl cyanoacetate is pretreated by using a pretreatment device, and is subjected to component separation and then crushing treatment;

[0041] S3: Mix ethyl cyanoacetate with potassium cyanide solution, then slowly add formaldehyde solution to react;

[0042] S4: Separate the organic layer of the reaction liquid, extract the water layer with solvent dimethyl sulfoxide, mix the organic layer, and finally obtain ethyl dicyanopropionate finished product after drying and desolventizing;

[0043] In S2, the pretreatment device comprises a storage mechanism 1, a high-frequency vibration device 3 and an ejection mechanism 4, the storage mechanism 1 comprises an outer support bin 101, the bottom end of the outer support bin 101 is connected with a bottom adjusting mechanism 5, the opposite inner walls of the outer support bin 101 are throughly provided with an inlet 106 and an outlet 109, and the outer walls of the inlet 106 and the outlet 109 are simultaneously covered with a translation sealing door 6;

[0044] The inner wall of the outer support bin 101 is movably connected with a support frame 102, and the connection position between the inner wall of the outer support bin 101 and the support frame 102 is provided with a sealing ring 107, the support frame 102 is fixedly laid with a breathable film 104, the top end of the support frame 102 and the top end inner wall of the outer support bin 101 are simultaneously connected with a plurality of first springs 105, the top end outer wall of the support frame 102 is fixedly connected with a clamping port 103, and the bottom end inner wall of the outer support bin 101 is provided with a partition plate 108;

[0045] The high-frequency vibration device 3 comprises a high-frequency vibration head 2, and the high-frequency vibration head 2 is attached to the surface of the breathable film 104, by the pretreatment of agglomeration of ethyl cyanoacetate, directly placing it in an environment with a certain humidity to make it uniformly agglomerated into small pieces, and the dust is attached to the surface of the agglomerated pieces, which directly reduces the amount of dust generated in the transfer process, and at the same time, by directly placing a certain amount of ethyl cyanoacetate in the outer support bin 101, after closing the translation sealing door 6, the certain amount of ethyl cyanoacetate is in a relatively sealed space, which is also convenient for the subsequent quantitative addition of ethyl cyanoacetate, and when the outer support bin 101 is transported by using a conveying belt or other conveying device, when it reaches the position of the high-frequency vibration device 3, the high-frequency vibration head 2 is pressed to the surface of the breathable film 104, and the high-frequency vibration head 2 is pressed to the surface of the ethyl cyanoacetate, by the vibration of the high-frequency vibration head 2, the ethyl cyanoacetate is crushed into powder, and under the action of the sealing ring 107 and the breathable film 104, the sealing environment can be guaranteed during the vibration process, so that the crushing and quantitative treatment of ethyl cyanoacetate in a relatively sealed environment is realized, the exposure amount of dust is reduced, and the personal safety of the workers is effectively protected.

[0046] Referring to Figure 5 In a preferred embodiment, the bottom adjusting mechanism 5 comprises a bottom support bin 502, and the top end of the bottom support bin 502 is movably connected with a movable bottom plate 503, the movable bottom plate 503 is connected with the partition plate 108 through a hinge, and the top end connection position of the partition plate 108 and the movable bottom plate 503 is simultaneously connected with a second elastic sealing piece 508.

[0047] Referring to Figure 5In a preferred embodiment, the other side outer wall of the moving bottom plate 503 is fixedly connected with the first elastic sealing sheet 501, one end of the first elastic sealing sheet 501 is fixed to the side inner wall of the outer supporting bin 101, the bottom end outer wall of the moving bottom plate 503 is connected with the connecting rod 505 through the first hinge seat 504, the other end of the connecting rod 505 is connected with the air rod 507 through the second hinge seat 506, the air rod 507 is fixed in the bottom supporting bin 502, in the bottom adjusting mechanism 5, the inclination angle of the connecting rod 505 can be changed through the contraction of the air rod 507, the moving bottom plate 503 can be inclined in the outer supporting bin 101 through different inclination angle supports and the limiting of the hinge on one side of the moving bottom plate 503, when the ethyl cyanoacetate is filled through the feeding port 106, the ethyl cyanoacetate can be guided to be smoothly placed on the top end of the partition plate 108 through the inclined moving bottom plate 503, when the moving bottom plate 503 is returned to the original position, the ethyl cyanoacetate in the outer supporting bin 101 can be flatly laid, thereby facilitating the subsequent vibration crushing operation, in addition, the first elastic sealing sheet 501 and the second elastic sealing sheet 508 can assist the sealing effect, the first elastic sealing sheet 501 can be retracted to connect the inner wall of the moving bottom plate 503 and the outer supporting bin 101 in the maximum inclination angle state of the moving bottom plate 503, thereby establishing a guide slope together with the moving bottom plate 503.

[0048] Referring to Figure 1 and Figure 5 In a preferred embodiment, S2 further comprises the following specific steps:

[0049] S21: the air rod 507 is extended, the support angle of the connecting rod 505 is changed, and the moving bottom plate 503 is inclined in the outer supporting bin 101;

[0050] S22: a certain amount of ethyl cyanoacetate is weighed and placed in the outer supporting bin 101, and the connecting rod 505 is returned to the original position;

[0051] S23: the translation sealing door 6 is closed, and the conveying and storage mechanism 1 is conveyed through the conveying belt;

[0052] S24: conveyed to the high-frequency vibration device 3, the high-frequency vibration head 2 drives the air-permeable membrane 104 to press down, and then the ethyl cyanoacetate is crushed through high-frequency vibration.

[0053] Referring to Figure 2 and Figure 3 In a preferred embodiment, the ejection mechanism 4 comprises a side support 408, one side outer wall of the side support 408 is fixedly connected with a driving seat 411, a guide rail 410 is inserted in the driving seat 411, one side of the guide rail 410 is fixedly connected with an L-shaped support frame 407, one side inner wall of the L-shaped support frame 407 is fixedly connected with a limiting plate 405, and a supporting rod 404 is simultaneously inserted in the L-shaped support frame 407 and the limiting plate 405.

[0054] Referring to Figure 3 In a preferred embodiment, the outer wall of the supporting rod 404 is fixedly connected with a second spring 406, the other end of the second spring 406 is connected with an L-shaped supporting frame 407, the bottom end of the supporting rod 404 is fixedly connected with a rack 402, and the bottom end of the rack 402 is fixedly connected with a bidirectional telescopic drive base 401.

[0055] Referring to Figure 3 In a preferred embodiment, the bidirectional telescopic drive base 401 comprises two telescopic ends, and the two telescopic ends are fixedly connected with two plugs 412 respectively, the two plugs 412 can be inserted into the clamping interface 103, one side of the rack 402 is engaged with a missing tooth gear 403, and one side of the outer wall of the missing tooth gear 403 is fixedly connected with a motor 409.

[0056] Referring to Figure 2 and Figure 3 In a preferred embodiment, S24 further comprises the following specific steps:

[0057] S25: The crushed ethyl cyanoacetate is conveyed again by the conveying belt and conveyed to the discharging area;

[0058] S26: The air blower and the mixed conveying channel are connected through the inlet 106 and the outlet 109 respectively, and the ethyl cyanoacetate powder is blown into the mixed conveying channel by the air blower;

[0059] S27: At the same time, the supporting frame 102 is connected through the bidirectional telescopic drive base 401 to drive the supporting frame 102 to be ejected to assist the powder to fall, the L-shaped supporting frame 407 and the structure fixedly connected therewith are driven to move downward by moving the guide rail 410 in the drive base 411, the bidirectional telescopic drive base 401 is moved to the position of the clamping interface 103, then the bidirectional telescopic drive base 401 drives the two plugs 412 to extend and be inserted into the clamping interface 103 to establish connection with the storage mechanism 1, the missing tooth gear 403 is driven to rotate by the motor 409 to be connected with the rack 402 intermittently, the rack 402 is driven to rise, and the rack 402 is disconnected from the missing tooth gear 403 until the supporting frame 102 is in a repeated ejection state under the action of the second spring 406, so that the ethyl cyanoacetate powder adhering to the breathable film 104 falls, material waste is avoided, and the powder is discharged by the air blowing mode, the other end can be connected with the mixed conveying channel through the air blower, so that the powder can be quickly transferred in a relatively sealed space.

[0060] Working principle: the high-frequency vibration device 3 and the ejection mechanism 4 are independent devices and are placed on one side of the conveying belt for conveying the storage mechanism 1. In the preparation process, the cyanacetic acid ethyl ester is directly placed in an environment with a certain humidity after being pretreated by agglomeration, so that it is uniformly agglomerated into small pieces, and the dust is attached to the surface of the agglomerated pieces, which directly reduces the amount of dust generated in the transfer process. At the same time, the cyanacetic acid ethyl ester is directly placed in the outer supporting bin 101, and after the translation sealing door 6 is closed, the quantified cyanacetic acid ethyl ester is in a relatively sealed space, which is convenient for the quantitative addition of cyanacetic acid ethyl ester in the later stage. With the use of conveying devices such as conveying belts, the outer supporting bin 101 is conveyed, and when it reaches the position of the high-frequency vibration device 3, the high-frequency vibration head 2 is pressed to the surface of the breathable film 104, and the high-frequency vibration head 2 is pressed to the surface of the cyanacetic acid ethyl ester. Through the vibration of the high-frequency vibration head 2, the cyanacetic acid ethyl ester is crushed into powder, and under the action of the sealing ring 107 and the breathable film 104, the sealing environment can be guaranteed during the vibration process, so that the crushing and quantitative treatment of the cyanacetic acid ethyl ester in the relatively sealed environment is realized, the exposure amount of dust is reduced, and the personal safety of the workers is effectively protected. At the same time, in the bottom adjusting mechanism 5, the inclination angle of the connecting rod 505 can be changed by the contraction of the air rod 507, and the inclination angle of the connecting rod 505 can be changed by the inclination angle of the connecting rod 505. The support and the limit of the hinge on one side of the movable bottom plate 503 can make the movable bottom plate 503 inclined in the outer supporting bin 101. When the cyanacetic acid ethyl ester is filled through the inlet 106, the inclined movable bottom plate 503 can guide it to be placed smoothly on the top end of the partition plate 108. When the movable bottom plate 503 is returned to the original position, the cyanacetic acid ethyl ester in the outer supporting bin 101 can be laid flat, which is convenient for the operation of vibration crushing in the later stage. In addition, the first and second elastic sealing pieces 501 and 508 can assist in sealing. The first elastic sealing piece 501 can retract to connect the movable bottom plate 503 and the inner wall of the outer supporting bin 101 when the movable bottom plate 503 is at the maximum inclination angle, so as to establish a guide slope together with the movable bottom plate 503. In addition, with the continuous movement of the storage mechanism 1, the two-way telescopic drive seat 401 moves to the clamping port 103, and the two-way telescopic drive seat 401 drives the two plugs 412 to extend and insert into the clamping port 103 to establish connection with the storage mechanism 1. The motor 409 drives the toothless gear 403 to rotate intermittently and connect with the rack 402, drives the rack 402 to rise, and then the rack 402 is disconnected from the toothless gear 403. Under the action of the second spring 406, the support frame 102 is in a repeated ejection state, so as to facilitate the cyanacetic acid ethyl ester powder adhered to the breathable film 104 to fall off, avoid waste of materials, and at the same time, the material is discharged by blowing, and the other end can be connected with the mixing conveying channel by the air suction machine, so as to facilitate the rapid transfer of the powder in the relatively sealed space.

[0061] The above merely describes preferred specific embodiments of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art, according to the technical solution and inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A processing method for ethyl dicyanopropionate, characterized in that, The specific steps include the following: S1: Prepare the raw materials. Store the liquid raw materials in a unified manner for later use. Place the solid raw material, ethyl cyanoacetate, in a humid environment with a certain humidity to cause it to clump together. S2: The agglomerated ethyl cyanoacetate is pretreated using pretreatment equipment, and then shredded after being weighed. S3: Mix ethyl cyanoacetate with potassium cyanide solution, and then slowly add formaldehyde solution to react; S4: Separate the organic layer from the reaction solution, extract the aqueous layer with dimethyl sulfoxide, mix the organic layers, and after drying and solvent removal, finally obtain ethyl dicyanopropionate product. In S2, the pretreatment equipment includes a storage mechanism (1), a high-frequency vibration device (3), and an ejection mechanism (4). The storage mechanism (1) includes an outer support chamber (101), and the bottom end of the outer support chamber (101) is connected to a bottom adjustment mechanism (5). The inner walls of the opposite sides of the outer support chamber (101) are provided with an inlet (106) and an outlet (109), and the outer walls of the inlet (106) and the outlet (109) are covered with sliding sealing doors (6). The inner wall of the outer support chamber (101) is fitted with a support frame (102), and a sealing ring (107) is provided at the connection between the support frame (102) and the inner wall of the outer support chamber (101). A breathable membrane (104) is fixedly laid inside the support frame (102), and multiple first springs (105) are connected to the top of the support frame (102) and the top inner wall of the outer support chamber (101). A snap-fit ​​interface (103) is fixedly connected to the top outer wall of the support frame (102), and a partition (108) is provided on the bottom inner wall of the outer support chamber (101). The high-frequency vibration device (3) includes a high-frequency vibration head (2), and the high-frequency vibration head (2) is attached to the surface of the breathable membrane (104); The bottom adjustment mechanism (5) includes a bottom support compartment (502), and a movable base plate (503) is movably connected to the top of the bottom support compartment (502). The movable base plate (503) is connected to the partition (108) by a hinge, and a second elastic sealing sheet (508) is connected at the top connection of the partition (108) and the movable base plate (503). The other side outer wall of the movable base plate (503) is fixedly connected to a first elastic sealing sheet (501), and one end of the first elastic sealing sheet (501) is fixed to the inner wall of one side of the outer support chamber (101). The bottom outer wall of the movable base plate (503) is connected to a connecting rod (505) through a first hinge seat (504), and the other end of the connecting rod (505) is connected to a gas rod (507) through a second hinge seat (506). The gas rod (507) is fixed inside the bottom support chamber (502). S2 further includes the following specific steps: S21: The air rod (507) extends, changing the support angle of the connecting rod (505), so that the moving base plate (503) tilts inside the outer support chamber (101); S22: Weigh out ethyl cyanoacetate and place it in the outer support chamber (101), and return the connecting rod (505) to its original position; S23: Close the sliding sealing door (6) and transport the storage mechanism (1) via the conveyor belt; S24: The high-frequency vibration device (3) is conveyed to the high-frequency vibration head (2), which drives the breathable membrane (104) to press down, and then the ethyl cyanoacetate is crushed by high-frequency vibration. The ejection mechanism (4) includes a side support (408), and a drive seat (411) is fixedly connected to one side outer wall of the side support (408). A guide rail (410) is inserted inside the drive seat (411), and an L-shaped support frame (407) is fixedly connected to one side of the guide rail (410). A limit plate (405) is fixedly connected to one side inner wall of the L-shaped support frame (407), and a support rod (404) is inserted inside both the L-shaped support frame (407) and the limit plate (405). The outer wall of the support rod (404) is fixedly connected to a second spring (406), and the other end of the second spring (406) is connected to an L-shaped support frame (407). The bottom end of the support rod (404) is fixedly connected to a rack (402), and the bottom end of the rack (402) is fixedly connected to a bidirectional telescopic drive seat (401). The bidirectional telescopic drive seat (401) includes two telescopic ends, and each of the two telescopic ends is fixedly connected to a plug (412). The two plugs (412) can be inserted into the card interface (103). A toothed gear (403) meshes with one side of the rack (402), and a motor (409) is fixedly connected to the outer wall of one side of the toothed gear (403).

2. The processing method for ethyl dicyanopropionate according to claim 1, characterized in that, The following specific steps are included after S24: S25: The already crushed ethyl cyanoacetate is conveyed again via conveyor belt and transported to the unloading area; S26: The blower and the mixing and conveying channel are connected through the inlet (106) and the outlet (109) respectively. The blower blows the ethyl cyanoacetate powder into the mixing and conveying channel. S27: At the same time, the bidirectional telescopic drive seat (401) is connected to the support frame (102), which drives the support frame (102) to be ejected, assisting the powder to fall.

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