Alkali washing device for clethodim intermediate
By designing a enezoster intermediate alkaline washing device including an intermediate alkaline washing tower, an online pH meter and a static layering device, the problems of low automation and poor mixing effect of alkaline washing devices in the prior art are solved, stable control of material pH value and extended equipment use cycles are achieved, and economic benefits are improved.
Patent Information
- Application Number
- CN202421323700.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-11
- Publication Date
- 2025-03-11
- Estimated Expiration
- 2034-06-11
AI Technical Summary
In the production process of enezosterone intermediates, the alkaline washing device in the prior art has low degree of automation and poor mixing effect, which makes it difficult to control the pH value of the material, damage the equipment and shorten the service cycle of the equipment.
A enezoster intermediate alkaline washing device including an intermediate alkaline washing tower, an online pH meter and a static layering device is designed to realize forced circulating washing of materials through a circulation pump to ensure uniform mixing of materials, and automatically layer the materials through a static layering device.
It improves the degree of automation and mixing effect of alkaline washing, ensures stable control of material pH value, reduces subsequent operation difficulty and production costs, extends the equipment usage cycle, and improves economic benefits.
Smart Images
Figure CN222586531U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of chemical production, and in particular relates to an alkali washing device for a clethodim intermediate. Background Art
[0002] Clethodim, chemically named [±]-2-[(E)-3-chloroallyloxyimino]propyl-5-[2-(ethylthio)propyl]-3-hydroxycyclohex-2-enone, is a cyclohexenone selective herbicide. In the production process of clethodim, there is a step reaction to synthesize the intermediate 5-[2-(ethylthio)propyl]-3-hydroxy-2-propionyl-2-cyclohexene-1-one, which is clethodim. When the decarboxylation reaction is carried out in the production process of the intermediate, the material is strongly acidic. If the material is not alkaline washed, the equipment will be damaged during the subsequent distillation, shortening the equipment life cycle. In the prior art, a pipeline static mixer and a packed tower are used for alkaline washing. Due to insufficient mixing in the early stage and a long residence time of the feed liquid in the tower, the feed liquid has automatically stratified before exiting the tower, so it is difficult to control the pH value of the material, which brings great difficulties to subsequent operations. Summary of the invention
[0003] The technical problem to be solved by the utility model is to provide a clethodim intermediate alkali washing device, which overcomes the defects in the prior art, has a high degree of automation, good alkali washing effect, good mixing effect, reduces the difficulty of subsequent operations and production costs, and improves economic benefits.
[0004] In order to solve the above technical problems, the technical solution of the utility model is:
[0005] A clethodim intermediate alkali washing device comprises an intermediate alkali washing tower, wherein a feed port is provided at the lower part of the tower body of the intermediate alkali washing tower, and the feed port is respectively connected to an intermediate storage tank and a diluted alkaline water storage tank through a pipeline, a flow meter, a regulating valve, and a feed pump; a circulation pipeline is provided on one side of the tower body, and the circulation pipeline is respectively connected to the bottom and the upper part of the tower body through a circulation pump; an online pH meter is provided inside the tower body, and a production pipeline is provided at the top of the tower body, and the production pipeline is connected to a static stratifier; the flow meter, the regulating valve, the feed pump and the online pH meter are interlocked with each other.
[0006] Preferably, the circulation pump is a PTFE-lined magnetic pump. When alkali washing is performed, the circulation pump is turned on for forced circulation.
[0007] Preferably, the static classifier is provided with a feed port for materials after alkali washing at the top, and the feed port for materials after alkali washing is connected to the production pipeline; the static classifier is provided with a vent and a material outlet at the top, and a dilute alkaline water outlet at the bottom, and the material outlet is connected to the material tank after alkali washing through a pipeline; the dilute alkaline water outlet at the bottom is connected to the alkali washing water recovery tank through a pipeline for storage and waiting for treatment.
[0008] The static stratifier automatically stratifies the intermediate product after alkali washing with the alkali washing water, and can continuously produce finished products.
[0009] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:
[0010] The utility model adopts an alkali washing tower to carry out alkali washing, circulates the materials in the alkali washing tower through a circulation pump, ensures that the materials in the alkali washing are evenly mixed and will not be stratified, and ensures the effect of the alkali washing. After the alkali washing is completed, the materials are automatically pumped into a static stratifier for stratification, and the alkali washed materials are collected after stratification.
[0011] In short, the utility model has a high degree of automation, good alkali washing effect, good mixing effect, reduces the difficulty of subsequent operations and production costs, and improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS
[0012] Figure 1 It is a structural schematic diagram of an embodiment of the utility model;
[0013] In the figure, 1. intermediate alkali washing tower; 2. flow meter; 3. regulating valve; 4. feed pump; 5. intermediate storage tank; 6. dilute alkali water storage tank; 7. circulation pump; 8. static stratifier; 9. material tank after alkali washing; 10. alkali washing water recovery tank. DETAILED DESCRIPTION
[0014] The present invention is further described below in conjunction with the accompanying drawings and embodiments.
[0015] Embodiment 1:
[0016] like Figure 1 As shown, a clethodim intermediate alkali washing device comprises an intermediate alkali washing tower 1, a feed port (not marked) is provided at the lower part of the tower body of the intermediate alkali washing tower 1, and the feed port is connected to an intermediate storage tank 5 and a dilute alkaline water storage tank 6 respectively through a pipeline (not marked), a flow meter 2, a regulating valve 3, and a feed pump 4; a circulation pipeline (not marked) is provided on one side of the tower body, and the circulation pipeline is connected to the bottom and the upper part of the tower body respectively through a circulation pump 7; an online pH meter (not marked) is provided inside the tower body, and a production pipeline (not marked) is provided at the top of the tower body, and the production pipeline is connected to a static stratifier 8; the static stratifier 8 transfers the intermediate The body and the alkali washing water enter the static stratifier together for static automatic stratification. The static stratifier 8 is provided with a feed port (not marked) for alkali-washed material on the top, a vent (not marked) and a material outlet (not marked) on the top, and a dilute alkali water outlet (not marked) at the bottom. The material outlet is connected to the alkali-washed material tank 9 through a pipeline; the dilute alkali water outlet at the bottom is connected to the alkali washing water recovery tank 10 through a pipeline; the flow meter 2, the regulating valve 3, the feed pump 4 and the online pH meter are interlocked with each other; the opening and flow rate of the regulating valve 3 are adjusted according to the feedback pH value to ensure that the pH value of the material after alkali washing is within the control index.
[0017] In actual production: the intermediate in the intermediate storage tank 5 and the dilute alkaline water in the dilute alkaline water storage tank 6 are respectively transported to the intermediate alkaline washing tower 1 through the flow meter 2, the regulating valve 3 and the feed pump 4 according to the set ratio. Under the drive of the circulating pump 7, the intermediate in the intermediate alkaline washing tower 1 is circulated and washed. When the pH value of the material in the tower body is between 5 and 6, the material is extracted from the top of the tower body, and the material in the tower body is pumped into the static stratifier 8 for stratification. After stratification, the intermediate that has been alkali-washed is continuously extracted and enters the alkali-washed material tank 9 for standby use, and the remaining alkaline water is transported to the alkali washing water recovery tank 10 by its own weight for treatment.
[0018] 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 clethodim intermediate alkali washing device, characterized in that: It comprises an intermediate alkali washing tower, wherein a feed port is arranged at the lower part of the tower body of the intermediate alkali washing tower, and the feed port is respectively connected with an intermediate storage tank and a diluted alkali water storage tank through a pipeline, a flow meter, a regulating valve and a feed pump; a circulation pipeline is arranged at one side of the tower body, and the circulation pipeline is respectively connected to the bottom and the upper part of the tower body through a circulation pump; an online pH meter is arranged inside the tower body, and a production pipeline is arranged at the top of the tower body, and the production pipeline is connected to a static stratifier; the flow meter, the regulating valve, the feed pump and the online pH meter are interlocked with each other.
2. The alkali washing device for the intermediate of clethodim according to claim 1, characterized in that: The circulating pump is a PTFE-lined magnetic pump.
3. The alkali washing device for the intermediate of clethodim according to claim 1, characterized in that: A feed port for post-alkali-washing material is provided at the top of the static classifier, and the feed port for post-alkali-washing material is connected to a production pipeline; a vent and a material outlet are provided at the top of the static classifier, and a dilute alkali water outlet is provided at the bottom; the material outlet is connected to the post-alkali-washing material tank through a pipeline, and the dilute alkali water outlet is connected to the alkali-washing water recovery tank through a pipeline.