A dehydration device for clethodim production
By designing a dehydration device in the production of enezosterone including three tandem vertical salt towers, the sodium chloride cleaning without opening of the salt tower is achieved by using molten salt hot water pipes and brine tanks, the safety and efficiency problems caused by manual cleaning in the prior art are solved, and a safer and more efficient cleaning effect is achieved.
Patent Information
- Application Number
- CN202421453057.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-24
- Publication Date
- 2025-04-08
- Estimated Expiration
- 2034-06-24
AI Technical Summary
When replacing sodium chloride in the existing dehydration device in the production of olefins, it is necessary to manually open the salt tower to clean the residual sodium chloride, resulting in the odor of the material, endangering the safety of operators, increasing labor intensity and reducing production efficiency.
A dehydration device including three series vertical salt towers is designed. By setting up feed ports and discharge ports at the lower and upper parts of the salt tower, and using molten salt hot water pipes and brine receiving tanks, the cleaning and reuse of sodium chloride can be achieved without opening the salt tower.
When cleaning residual sodium chloride, the device avoids the spread of odor of materials, protects the safety of operators, reduces labor intensity, and improves production efficiency. At the same time, since salt is dissolved into water, the removal effect is more thorough than manual shoveling of salt.
Smart Images
Figure CN222724292U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of chemical production, and in particular relates to a dehydration 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. Among them, 5-[2-(ethylthio)propyl]-3-hydroxy-2-propionyl-2-cyclohexene-1-one is an important intermediate of clethodim. In the production process of 5-[2-(ethylthio)propyl]-3-hydroxy-2-propionyl-2-cyclohexene-1-one, petroleum ether is needed to extract the final product 5-[2-(ethylthio)propyl]-3-hydroxy-2-propionyl-2-cyclohexene-1-one after decarboxylation. The existing process is to use a vertical salt tower equipment to separate the water-containing clethodim material obtained in the previous process, but because the existing salt tower equipment workshop needs to regularly replace sodium chloride to ensure the removal effect of moisture in the material during production, the salt tower needs to be opened during the salt replacement process, and the residual sodium chloride in the tower body needs to be manually removed. This process not only causes the odor of the material to spread, but also seriously endangers the personal safety of the operating workers, increases labor intensity, and reduces production efficiency. Therefore, it is necessary to modify the above-mentioned treatment method. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide a dehydration device in the production of clethodim, which overcomes the defects of the prior art, can improve production efficiency, reduce labor intensity, ensure the safety of employees and the environment, and ensure the cleaning effect.
[0004] In order to solve the above technical problems, the technical solution of the utility model is:
[0005] A dehydration device for the production of clethodim comprises three vertical salt towers arranged in series, wherein a feed port is provided at one seventh of the height of the lower part of the salt tower, and a discharge port is provided at six sevenths of the height of the upper part of the salt tower; the feed port is connected to a material conveying pipe and a molten salt hot water pipe respectively through a valve, and the discharge port is connected to a light phase storage tank and a brine receiving tank respectively through a valve and a pipeline; a heavy phase outlet is provided at the bottom of the salt tower, and the heavy phase outlet is connected to the brine receiving tank through a valve and a pipeline.
[0006] Preferably, the side walls of the tower body of the salt tower are provided with an upper mirror, a middle mirror and a lower mirror from top to bottom, respectively; the dissolution of sodium chloride in the tower can be observed intuitively.
[0007] Preferably, the material conveying pipe is connected to the clethodim synthesis reactor of the previous process.
[0008] Preferably, the molten salt hot water pipe is connected to an external hot water storage tank through a water transfer pump.
[0009] Preferably, the brine receiving tank is connected to a brine treatment device via a brine pump to concentrate and crystallize the brine for reuse.
[0010] Preferably, the light phase storage tank transports the light phase (clethodim mother liquor) to the post-processing equipment clethodim preparation kettle through a transfer pump to obtain the finished clethodim after treatment.
[0011] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0012] The utility model uses hot water to melt salt when the sodium chloride is replaced regularly and the residual salt in the tower needs to be processed, and then collects the water after the molten salt into the brine receiving tank. The salt tower does not need to be opened during the entire residual salt cleaning process, so no odor escapes; at the same time, it is also unnecessary to manually remove the residual salt in the tower body, thereby ensuring the personal safety of the operating workers and reducing the labor intensity; and because the salt dissolves in the water, the cleaning effect is more thorough than that of manual salt shoveling, thereby ensuring the cleaning effect.
[0013] In short, the utility model can improve production efficiency, reduce labor intensity, ensure the safety of employees and the environment, and ensure the cleaning effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;
[0015] In the figure, 1. Salt tower; 2. Material conveying pipe; 3. Molten salt hot water pipe; 4. Light phase storage tank; 5. Brine receiving tank. DETAILED DESCRIPTION
[0016] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0017] Embodiment 1:
[0018] like Figure 1As shown, a dehydration device for the production of clethodim comprises three vertical salt towers 1 arranged in series, a feed inlet (not marked) is provided at one seventh of the height of the lower part of the salt tower 1, and a discharge outlet (not marked) is provided at six sevenths of the height of the upper part of the salt tower 1; the feed inlet is connected to a material conveying pipe 2 and a molten salt hot water pipe 3 respectively through a valve (not marked), and the discharge outlet is connected to a light phase storage tank 4 and a brine receiving tank 5 respectively through a valve and a pipeline (not marked); a heavy phase outlet (not marked) is provided at the bottom of the salt tower 1, and the heavy phase outlet is connected to the brine receiving tank 5 through a valve and a pipeline.
[0019] In actual production: the salt tower is filled with solid granular salt (sodium chloride), and the clethodim material containing water is transported from the feed port to the salt tower 1 through the material conveying pipe 2 and the corresponding valve, and is dehydrated through three salt towers 1 in sequence (the water in the material is replaced by the absorption of salt), and the dehydrated material is transported from the discharge port of the last salt tower 1 through a pipeline to the light phase storage tank for subsequent processing; the salt in the salt tower 1 becomes brine due to the absorption of water, and the brine has a high specific gravity and sinks to the bottom of the salt tower 1, and is discharged to the brine receiving tank 5 through the heavy phase outlet at the bottom, waiting for further processing.
[0020] After a period of production, the salt particles inside the salt tower 1 gradually melt away, and the salt needs to be cleaned and refilled with new salt. At this time, first close the valve on the material conveying pipe 2, close the valve on the pipeline from the discharge port to the light phase storage tank 4, open the valve on the molten salt hot water pipe 3, open the valve on the pipeline from the discharge port to the brine receiving tank 5, start inputting 80°C hot water to melt the salt, and observe the molten salt through the upper, middle and lower sight glasses (not marked). When the salt is clean, stop melting the salt. After draining the molten salt hot water, refill with new salt to prepare for the subsequent dehydration process.
[0021] 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 dehydration device for the production of clethodim, characterized in that: It comprises three vertical salt towers arranged in series, wherein a feed port is arranged at one seventh of the height of the lower part of the salt tower, and a discharge port is arranged at six sevenths of the height of the upper part of the salt tower; the feed port is connected to a material conveying pipe and a molten salt hot water pipe respectively through valves, and the discharge port is connected to a light phase storage tank and a brine receiving tank respectively through valves and pipelines; a heavy phase outlet is arranged at the bottom of the salt tower, and the heavy phase outlet is connected to the brine receiving tank through valves and pipelines.
2. The dehydration device for clethodim production according to claim 1, characterized in that: The side walls of the tower body of the salt tower are respectively provided with an upper mirror, a middle mirror and a lower mirror from top to bottom.
3. The dehydration device for clethodim production according to claim 1, characterized in that: The material conveying pipe is connected with the clethodim synthesis reactor of the previous process.
4. The dehydration device for producing clethodim according to claim 1, characterized in that: The molten salt hot water pipe is connected to an external hot water storage tank through a water delivery pump.
5. The dehydration device for clethodim production according to claim 1, characterized in that: The brine receiving tank is connected to a brine treatment device through a brine pump.
6. The dehydration device for clethodim production according to claim 1, characterized in that: The light phase storage tank transports the light phase to the post-processing equipment, the clethodim preparation kettle, through a transfer pump.