Feeding device in clethodim production
By designing a enezosterone production feeding device including a spiral feeder and a dust collector, the problems of dust diffusion, material loss and organic gas diffusion caused by artificial feeding in the prior art are solved, and automated feeding and safe production are achieved, and cost and working strength are reduced.
Patent Information
- Application Number
- CN202421386923.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-17
- Publication Date
- 2025-03-28
- Estimated Expiration
- 2034-06-17
AI Technical Summary
During the production process of enezosterone, the feeding manhole cover in the prior art needs to be opened for manual feeding, resulting in the escape of toluene steam, a large environmental odor, a risk of poisoning and explosion, and solid dust spreads and scatters, causing material loss.
A feeding device in the production of enezosterone is designed, including a screw feeder and a dust collector. The solid DMAP is transported to the silo through a spiral feeder. The silo is connected to the reactor through a pipeline to realize automated feeding, and through nitrogen protection and interlocking control circuits, preventing dust diffusion and organic gas diffusion.
It effectively controls the diffusion and scattering of solid dust, avoids material losses, reduces the diffusion of organic gas, realizes automated operations, reduces working strength, and reduces costs.
Smart Images
Figure CN222677971U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of chemical production, and in particular relates to a feeding device in the production of clethodim. Background Art
[0002] Clethodim, chemical name is [±]-2-[(E)-3-chloroallyloxyimino]propyl-5-[2-(ethylthio)propyl]-3-hydroxycyclohex-2-enone, which belongs to the cyclohexenone class of selective herbicides. Clethodim is a highly selective ACCase inhibitor with systemic conduction, suitable for most dicotyledonous crops such as cotton, peanuts, soybeans, tobacco, rapeseed and orchards to control grass weeds such as barnyard grass, wild oats, crabgrass, foxtail grass, goosegrass, foxtail grass, bluegrass, and hard grass.
[0003] In the process of clethodim synthesis reaction, a solid catalyst DMAP, namely 4-dimethylaminopyridine, is required. Solid DMAP is added to the rearrangement reactor, and then the temperature is raised to 90°C and kept warm for 6 hours. In the prior art, the manhole cover of the reactor needs to be opened for manual feeding during the solid DMAP feeding process. Because toluene vapor escapes, the environment odor is strong, which is easy to cause risks such as poisoning and explosion; in addition, solid dust diffuses and scatters, causing material loss. In order to ensure production and environmental safety and reduce production costs, the above problems must be solved. Summary of the invention
[0004] The technical problem to be solved by the utility model is to provide a feeding device in the production of clethodim, which overcomes the defects in the prior art, can control the diffusion and scattering of solid dust, avoid material loss, and reduce the diffusion of organic gas; and also realizes automated operation and reduces work intensity.
[0005] In order to solve the above technical problems, the technical solution of the utility model is:
[0006] A feeding device for clethodim production comprises a spiral feeder, a dust collector is arranged above the feeding end of the spiral feeder, and the discharging end of the spiral feeder is connected to the feeding port of a silo; the discharging port of the silo is connected to the feeding port of a reactor through a pipeline, and the discharging port of the reactor is connected to the feeding port of a DMAP solution receiving tank; a silo nitrogen pipeline is arranged on the top of the silo, and a silo discharge valve and a silo weighing module are arranged on the bottom; the reactor is provided with a stirring device and a steam jacket, and a reactor feeding valve, a first venting pipeline, a reactor toluene feeding pipeline, and a reactor nitrogen pipeline are arranged on the top of the reactor; a reactor cut-off valve and a tuning fork switch are arranged at the discharging port at the bottom of the reactor, and the discharging port is also connected to a discharging pipeline, which is connected to the DMAP solution receiving tank through the DMAP solution receiving tank cut-off valve; a second venting pipeline is arranged on the top of the DMAP solution receiving tank, and a receiving tank weighing module and a discharge port are arranged at the bottom, and a feeding pipeline and a feeding pump are connected to the discharge port.
[0007] Preferably, a sealing cover is provided between the discharge end of the spiral feeder and the feed inlet of the silo to prevent material loss.
[0008] Preferably, the silo nitrogen pipeline is connected to an external nitrogen supply device to provide nitrogen protection for the silo.
[0009] Preferably, the silo discharge valve at the bottom of the silo and the silo weighing module form an interlocking control loop, which can automatically control the amount of material and switch the discharge valve.
[0010] Preferably, a toluene flow meter and a toluene cut-off valve are provided on the toluene feed pipeline of the reactor, and the toluene flow meter and the toluene cut-off valve form an interlocking control loop.
[0011] Preferably, a remote thermometer is provided in the reactor; the upper part of the steam jacket is connected with a steam inlet pipe and a steam regulating valve, and the steam regulating valve is interlocked with the remote thermometer in the reactor; and the lower part is connected with a shower pipe.
[0012] Preferably, the first venting pipeline and the second venting pipeline are both DMAP solution venting pipelines to vent the gas generated by the DMAP solution.
[0013] Preferably, a remote thermometer is provided in the DMAP solution receiving tank; a water heating coil is provided on the inner wall of the DMAP solution receiving tank, the bottom of the water heating coil is connected to a hot water inlet pipeline, and a hot water inlet cut-off valve is provided on the hot water inlet pipeline; the upper part is connected to a hot water outlet pipeline, and a hot water outlet cut-off valve is provided on the hot water outlet pipeline. The inlet cut-off valve, the outlet cut-off valve and the remote thermometer are interlocked and controlled with each other.
[0014] Preferably, the receiving tank weighing module and the feeding pump form an interlocking control loop.
[0015] Preferably, the reactor cut-off valve and the tuning fork switch form a control loop.
[0016] Preferably, the DMAP solution receiving tank cut-off valve and the receiving tank weighing module form a control loop.
[0017] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0018] The utility model arranges a dust collector at the feeding end of the spiral feeder to prevent the particle material from being scattered, and collects the scattered material through the dust collector for reuse; then, solid DMAP is first prepared into a DMAP toluene solution through a connected silo, a reaction kettle and a DMAP solution receiving tank, and then transported to the rearrangement kettle for reaction, thereby completely overcoming the defects of the prior art.
[0019] In short, the utility model can effectively control the diffusion and scattering of solid dust, avoid material loss, reduce scattering by 0.05%, and reduce costs by 33 yuan / batch; at the same time, it reduces the diffusion of organic gases, and also realizes automated operation and reduces work intensity. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;
[0021] In the figure, 1. screw feeder; 2. dust collector; 3. silo; 4. reactor; 5. DMAP solution receiving tank; 6. silo nitrogen pipeline; 7. silo unloading valve; 8. silo weighing module; 9. reactor feed valve; 10. first venting line; 11. reactor toluene feed line; 12. reactor nitrogen pipeline; 13. toluene flowmeter; 14. toluene cut-off valve; 15. reactor cut-off valve; 16. tuning fork switch; 17. DMAP solution receiving tank cut-off valve; 18. second venting line; 19. receiving tank weighing module; 20. feed pump. DETAILED DESCRIPTION
[0022] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0023] Embodiment 1:
[0024] like Figure 1As shown, a feeding device for the production of clethodim comprises a spiral feeder 1, a dust collector 2 is arranged above the feeding end of the spiral feeder, the discharge end of the spiral feeder 1 is connected to the feeding port of the silo 3; the discharge port of the silo 3 is connected to the feeding port of the reactor 4 through a pipeline, and the discharge port of the reactor 4 is connected to the feeding port of the DMAP solution receiving tank 5; the top of the silo 3 is provided with a silo nitrogen pipeline 6, and the bottom is provided with a silo discharge valve 7 and a silo weighing module 8; the reactor 4 is provided with a steam jacket (not shown), and the top of the reactor 4 is provided with a reactor feeding valve 9, a first venting pipeline 10, and a reactor 5. Toluene feed pipeline 11 and reactor nitrogen pipeline 12; a toluene flowmeter 13 and a toluene shut-off valve 14 are arranged on the reactor toluene feed pipeline 11; a reactor shut-off valve 15 and a tuning fork switch 16 are arranged at the discharge port at the bottom of the reactor 4, and a discharge pipeline (not marked) is also connected, and the discharge pipeline is connected to the DMAP solution receiving tank 5 through the DMAP solution receiving tank shut-off valve 17; a second venting pipeline 18 is arranged at the top of the DMAP solution receiving tank 5, and a receiving tank weighing module 19 and a discharge port (not marked) are arranged at the bottom, and the discharge port is connected to a feed pump feed pipeline (not marked) and a feed pump 20.
[0025] In actual production: first, solid DMAP is fed into the silo 3 through the screw feeder 1. A dust collector 2 is provided above the feed port of the screw feeder 1, which can collect and reuse small-size DMAP to prevent material loss; the screw feeder 1 directly transports the material into the silo 3, and the silo 3 is protected by nitrogen; when the feed weight reaches the requirement, the screw feeder 1 stops feeding, and the silo discharge valve 7 and the reactor feed valve 9 automatically open the material to enter the reactor 4, and the two valves are automatically closed after the discharge is completed; then toluene is pumped into the reactor 4 through the reactor toluene feed pipeline 11, the toluene flowmeter 13, and the toluene cut-off valve 14. When the feed weight is reached, the toluene cut-off valve 14 is automatically closed and stirring is started; the steam size is adjusted through the steam regulating valve (not shown), and steam is introduced into the jacket of the reactor 4, and when the steam is discharged, the reactor 4 is cooled and the reactor 4 is cooled, the reactor 4 is cooled and the reactor 4 is cooled; and the reactor 4 is cooled and the reactor 4 is cooled. When the material temperature reaches 50°C, the steam regulating valve is automatically closed; the reactor cut-off valve 15 and the DMAP solution receiving tank cut-off valve 17 are opened to put the material into the DMAP solution receiving tank 5. After the material is discharged, the tuning fork switch 16 and the reactor cut-off valve 15 form an interlocking control loop, and the reactor cut-off valve 15 is closed; the material weight is displayed by the receiving tank weighing module 19 of the DMAP solution receiving tank 5, and an interlocking control loop is formed with the DMAP solution receiving tank cut-off valve 17; the receiving tank weighing module 19 and the feed pump 20 form a control loop; in order to prevent DMAP from precipitating out of the material, the DMAP solution receiving tank 5 is maintained at a material temperature of 50°C by the hot water inlet of the receiving tank's water heating coil and the hot water outlet of the receiving tank (to prevent DMAP from being resolved); finally, the material is pumped into the rearrangement tank (not shown) by the feed pump 20 for use.
[0026] It should be understood that these embodiments are only used to illustrate the present invention and are not used to limit the scope of the present invention. In addition, it should be understood that after reading the content taught by the present invention, those skilled in the art can make various changes or modifications to the present invention, and these equivalent forms also fall within the scope defined by the claims attached to this application.
Claims
1. A feeding device for the production of clethodim, characterized in that: The invention comprises a spiral feeder, wherein a dust collector is arranged above the feeding end of the spiral feeder, and the discharging end of the spiral feeder is connected to the feeding port of the silo; the discharging port of the silo is connected to the feeding port of the reactor through a pipeline, and the discharging port of the reactor is connected to the feeding port of the DMAP solution receiving tank; a silo nitrogen pipeline is arranged on the top of the silo, and a silo discharge valve and a silo weighing module are arranged on the bottom; the reactor is provided with a stirring device and a steam jacket, and a reactor feeding valve, a first venting pipeline, a reactor toluene feeding pipeline and a reactor nitrogen pipeline are arranged on the top of the reactor; a reactor cut-off valve and a tuning fork switch are arranged on the discharging port at the bottom of the reactor, and the discharging port is also connected to a discharging pipeline, which is connected to the DMAP solution receiving tank through the DMAP solution receiving tank cut-off valve; a second venting pipeline is arranged on the top of the DMAP solution receiving tank, and a receiving tank weighing module and a discharging port are arranged on the bottom, and the discharging port is connected to a feeding pipeline and a feeding pump.
2. The feeding device for the production of clethodim according to claim 1, characterized in that: A sealing cover is provided between the discharge end of the spiral feeder and the feed inlet of the silo.
3. The feeding device for the production of clethodim according to claim 1, characterized in that: The silo nitrogen pipeline is connected to an external nitrogen supply device.
4. The feeding device for the production of clethodim according to claim 1, characterized in that: The silo discharge valve at the bottom of the silo and the silo weighing module form an interlocking control loop; the receiving tank weighing module and the feeding pump form an interlocking control loop; the reactor cut-off valve and the tuning fork switch form a control loop; the DMAP solution receiving tank cut-off valve and the receiving tank weighing module form a control loop.
5. The feeding device for the production of clethodim according to claim 1, characterized in that: A toluene flow meter and a toluene cut-off valve are arranged on the toluene feed pipeline of the reactor.
6. The feeding device for the production of clethodim according to claim 1, characterized in that: A remote thermometer is arranged in the reactor; the upper part of the steam jacket is connected with a steam inlet pipe and a steam regulating valve, and the steam regulating valve is interlocked with the remote thermometer in the reactor; and the lower part is connected with a shower pipe.
7. The feeding device for the production of clethodim according to claim 1, characterized in that: The first venting pipeline and the second venting pipeline are both DMAP solution venting pipelines.
8. The feeding device for the production of clethodim according to claim 1, characterized in that: A remote thermometer is arranged in the DMAP solution receiving tank; a water heating coil is arranged on the inner wall of the DMAP solution receiving tank, the bottom of the water heating coil is connected with a hot water inlet pipeline, and a hot water inlet cut-off valve is arranged on the hot water inlet pipeline; the upper part is connected with a hot water outlet pipeline, and a water outlet cut-off valve is arranged on the hot water outlet pipeline; the water inlet cut-off valve, the water outlet cut-off valve and the remote thermometer are interlocked and controlled with each other.