Chlorobenzene washing and layering device in imazamox active compound production

Abstract

The utility model belongs to the technical field of chemical production, and discloses a chlorobenzene washing and layering device in imazamox technical production, which comprises a chlorobenzene washing kettle, a discharge port communicated with a discharge pipe is arranged at the bottom of the chlorobenzene washing kettle, and a first stop valve, a tuning fork switch, a conductivity meter and a layering sight glass are sequentially arranged on the discharge pipe from the discharge port end to the outside; the other end of the layering sight glass is communicated with a tee joint, the tee joint is respectively communicated with a washing water layering pipeline and a chlorobenzene layering pipeline, the washing water layering pipeline is provided with a second stop valve, and the chlorobenzene layering pipeline is provided with a regulating valve; and the first stop valve, the tuning fork switch, the conductivity meter, the second stop valve and the regulating valve are all electrically connected to an automatic control system. According to the utility model, chlorobenzene washing layering is controlled through an automatic instrument, so that raw material waste caused by misoperation of personnel in the layering process is reduced, the labor cost is reduced, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical production, and specifically relates to a chlorobenzene washing and stratification device in the production of imazamox technical. Background Art

[0002] Methoxazolidinone is an imidazolinone herbicide variety. It is absorbed, conducted and accumulated in the meristem through the leaves, inhibiting the activity of AHAS, resulting in the cessation of the biosynthesis of branched-chain amino acids - valine, leucine and isoleucine, interfering with DNA synthesis, cell mitosis and plant growth, and ultimately causing plant death. In the production process of methoxazolidinone technical, alcohol-containing chlorobenzene needs to be washed, layered and recycled. The existing washing and layering device is that after the washing of alcohol-containing chlorobenzene is completed, the on-site operator notifies the DCS operator to open the bottom cut-off valve and the chlorobenzene layering pipeline cut-off valve. After the on-site operator observes the layering mirror and determines that an intermediate layer has appeared, he notifies the DCS operator to close the chlorobenzene layering pipeline cut-off valve and open the wash water layering pipeline cut-off valve. After the wash water is poured, the on-site operator notifies the DCS operator to notify the DCS operator to close the bottom cut-off valve and the wash water cut-off valve. In this chlorobenzene washing and layering process, there is a risk of waste of raw materials due to human operating errors and waste of labor costs. Summary of the invention

[0003] The technical problem to be solved by the utility model is to provide a chlorobenzene washing and stratification device in the production of methoxam technical, which overcomes the defects in the prior art and controls the chlorobenzene washing and stratification through automatic instruments, thereby reducing the waste of raw materials caused by human operating errors during the stratification process, reducing labor costs, and improving production efficiency.

[0004] In order to solve the above technical problems, the technical solution of the utility model is:

[0005] A chlorobenzene washing and stratification device in the production of imazamox technical material comprises a chlorobenzene washing kettle, wherein a discharge port connected to a discharge pipe is arranged at the bottom of the chlorobenzene washing kettle, and a first shut-off valve, a tuning fork switch, a conductivity meter and a stratification sight glass are arranged on the discharge pipe in sequence from the discharge port end outward; the other end of the stratification sight glass is connected to a tee, which is also respectively connected to a washing water stratification pipeline and a chlorobenzene stratification pipeline, the washing water stratification pipeline is provided with a second shut-off valve, and the chlorobenzene stratification pipeline is provided with a regulating valve; the first shut-off valve, the tuning fork switch, the conductivity meter, the second shut-off valve and the regulating valve are all electrically connected to an automatic control system.

[0006] Preferably, the conductivity meter is interlocked with the regulating valve on the chlorobenzene stratification pipeline and the second shut-off valve on the wash water stratification pipeline. The conductivity meter controls the opening and closing of the regulating valve and the second shut-off valve, thereby realizing automatic diversion of the liquid after stratification.

[0007] Preferably, the tuning fork switch is interlocked with the first cut-off valve. The tuning fork switch controls the opening and closing of the first cut-off valve to ensure the subsequent diversion effect.

[0008] Preferably, the automatic control system is a DCS automatic control system.

[0009] Preferably, the models of the first cut-off valve and the second cut-off valve are both DN125-80, and the manufacturer is Shanghai Huhang Valve Co., Ltd.; the tuning fork switch model: DN50, the manufacturer is Xi'an Huashun Measurement Equipment Co., Ltd.; the conductivity meter model: DN50, the manufacturer is Mettler & Toledo; the regulating valve model: DN50, the manufacturer is Hangzhou Jinshan Valve Co., Ltd.

[0010] Due to the adoption of the above technical solution, the beneficial effects of the utility model are:

[0011] The utility model controls the chlorobenzene stratification pipeline regulating valve and the wash water stratification pipeline cut-off valve through the conductivity meter and the tuning fork switch, thereby effectively avoiding the waste of raw materials due to operator error and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of an embodiment of the utility model;

[0013] In the figure, 1. Chlorobenzene washing kettle; 2. Discharge pipe; 3. First shut-off valve; 4. Tuning fork switch; 5. Conductivity meter; 6. Stratification sight glass; 7. Washing water stratification pipeline; 8. Chlorobenzene stratification pipeline; 9. Second shut-off valve; 10. Regulating valve. DETAILED DESCRIPTION

[0014] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0015] Embodiment 1:

[0016] like Figure 1 As shown, a chlorobenzene washing and stratification device in the production of methoxam technical, comprises a chlorobenzene washing kettle 1, a discharge port (not marked) connected to a discharge pipe 2 is provided at the bottom of the chlorobenzene washing kettle 1, and a first shut-off valve 3, a tuning fork switch 4, a conductivity meter 5 and a stratification sight glass 6 are sequentially arranged on the discharge pipe 2 from the discharge port end outward; the other end of the stratification sight glass 6 is connected to a tee (not marked), and the tee is also connected to a wash water stratification pipeline 7 and a chlorobenzene stratification pipeline 8 respectively, the wash water stratification pipeline 7 is provided with a second shut-off valve 9, and the chlorobenzene stratification pipeline 8 is provided with a regulating valve 10; the first shut-off valve 3, the tuning fork switch 4, the conductivity meter 5, the second shut-off valve 9 and the regulating valve 10 are all electrically connected to an automatic control system (not marked).

[0017] In actual production: when the chlorobenzene washing in the chlorobenzene washing kettle 1 is finished, the DCS operator (the chlorobenzene washing and standing time needs to be manually timed. Therefore, when the washing and standing time are finished, the first shut-off valve at the bottom of the kettle and the chlorobenzene stratification shut-off valve for dumping materials still need to be manually operated by the DCS operator. The switching valves and closing valves at the end of stratification can be automatically controlled) opens the first shut-off valve 3 at the bottom of the chlorobenzene washing kettle and the regulating valve 10 on the chlorobenzene stratification pipeline 8. The chlorobenzene layer in the chlorobenzene washing kettle 1 continues to flow out through the first shut-off valve 3 at the bottom of the kettle and the chlorobenzene stratification pipeline 8. When the conductivity meter 5 detects that the washing water begins to appear (the conductivity changes significantly), the chlorobenzene layer in the chlorobenzene washing kettle 1 continues to flow out through the first shut-off valve 3 at the bottom of the kettle and the chlorobenzene stratification pipeline 8. ), the opening of the regulating valve 10 on the chlorobenzene stratification pipeline 8 is controlled to gradually decrease. When the conductivity meter 5 detects that it reaches the middle layer (when the liquid in the pipeline is all washing water, the chlorobenzene without water has been completely discharged through the tee, and a small amount of chlorobenzene containing washing water is still in the pipeline above the tee and the stratification sight glass 6), the regulating valve 10 on the chlorobenzene stratification pipeline 8 is controlled to be closed, and the second shut-off valve 9 on the washing water stratification pipeline 7 is opened to export the washing water. When the tuning fork switch 4 detects that there is no material in the kettle bottom discharge pipe 2, the first shut-off valve 3 is controlled to be closed, and the second shut-off valve 9 on the washing water stratification pipeline 7 is closed, and the stratification of the chlorobenzene washing kettle is completed.

[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 chlorobenzene washing and stratification device in the production of imazamox technical, characterized in that: The invention comprises a chlorobenzene washing kettle, wherein a discharge port connected to a discharge pipe is provided at the bottom of the chlorobenzene washing kettle, and a first shut-off valve, a tuning fork switch, a conductivity meter and a stratification sight glass are sequentially arranged on the discharge pipe from the discharge port end to the outside; the other end of the stratification sight glass is connected to a tee, and the tee is also respectively connected to a washing water stratification pipeline and a chlorobenzene stratification pipeline, the washing water stratification pipeline is provided with a second shut-off valve, and the chlorobenzene stratification pipeline is provided with a regulating valve; the first shut-off valve, the tuning fork switch, the conductivity meter, the second shut-off valve and the regulating valve are all electrically connected to an automatic control system.

2. The chlorobenzene washing and stratification device for the production of imazamox technical as claimed in claim 1, characterized in that: The conductivity meter is interlocked with the regulating valve on the chlorobenzene stratification pipeline and the second cut-off valve on the wash water stratification pipeline.

3. The chlorobenzene washing and stratification device for the production of imazamox technical according to claim 1, characterized in that: The tuning fork switch is interlocked with the first shut-off valve.

4. The chlorobenzene washing and stratification device for the production of imazamox technical according to claim 1, characterized in that: The automatic control system is a DCS automatic control system.

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