CN219580541U - Clean environment-friendly kungfu acyl chloride production system - Google Patents
Clean environment-friendly kungfu acyl chloride production system Download PDFInfo
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- CN219580541U CN219580541U CN202320595859.6U CN202320595859U CN219580541U CN 219580541 U CN219580541 U CN 219580541U CN 202320595859 U CN202320595859 U CN 202320595859U CN 219580541 U CN219580541 U CN 219580541U
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Abstract
The utility model discloses a clean environment-friendly kungfu acyl chloride production system, which comprises an photochemical reaction kettle and a product storage tank, wherein a kungfu acid solid material inlet is arranged on the photochemical reaction kettle, a tail gas pipeline, a material outlet pipeline, a nitrogen pipeline, a DMF (dimethyl formamide) adding pipeline, a kungfu acyl chloride adding pipeline and a phosgene introducing pipeline are arranged on the photochemical reaction kettle, wherein the phosgene introducing pipeline is connected with a phosgene buffer tank through a phosgene flow regulating valve, the phosgene buffer tank is connected with a phosgene vaporizer, a phosgene flowmeter is arranged at the inlet of the phosgene vaporizer, a nitrogen control valve is arranged on the nitrogen adding pipeline, the kungfu acyl chloride adding pipeline is connected with the kufu acyl chloride metering tank through an automatic control valve, the kungfu acyl chloride metering tank is connected with the product storage tank, the DMF adding pipeline is connected with the DMF metering tank through the automatic control valve, the material outlet pipeline is provided with the automatic control valve, and the material outlet pipeline is connected with the product storage tank. Environmental protection, can realize automated control, easy operation.
Description
Technical Field
The utility model belongs to the technical field of chemical production, and particularly relates to a production system of kungfu acyl chloride.
Background
The cyhalothrin is named as cyhalothrin, and the liquid with pungent smell is colorless. The water-soluble pyrethroid is dissolved in benzene, toluene and other organic solvents, and is an intermediate for preparing high-efficiency cyhalothrin (cyhalothrin), tefluthrin, bifenthrin and other pyrethroids.
The current preparation method mainly comprises the following steps:
1. is prepared by the reaction of cyhaloc acid and phosphorus pentachloride in phosphorus oxychloride solvent.
Adding phosphorus pentachloride and phosphorus oxychloride into a reaction device, heating to 50-85 ℃, and reacting for 1-20 h at a temperature; and after the reaction is finished, distilling under reduced pressure to obtain the kungfu acyl chloride.
2. Method 2 reaction of kungfu acid with phosphorus trichloride
3. The method comprises the steps of putting the cyhaloc acid, the inert organic solvent and the catalyst into a reaction vessel, dropwise adding the thionyl chloride at the temperature of-5-30 ℃, reacting for 0-72 hours at the temperature of-5-30 ℃, and recovering the inert organic solvent through vacuum distillation. The disadvantage of this document is that: (1) The sulfoxide chloride is used as an acylating agent to generate a mixed gas byproduct of hydrogen chloride and sulfur dioxide, and the mixed gas byproduct is directly absorbed by water and is not easy to comprehensively utilize, and a large amount of alkali is needed for neutralization treatment, so that the method is not friendly to the environment, and the treatment cost is increased. (2) The reaction requires the addition of a catalyst, further increasing the production cost. The method has the defects of complex treatment process, environmental protection and the like.
Therefore, the applicant develops a novel synthesis method, wherein the method takes the kungfu acid as a raw material, takes the kungfu acyl chloride as a dispersion solvent, and reacts with phosgene to prepare the kungfu acyl chloride, and the reaction solvent is not needed, so that the post-treatment is simple. Accordingly, there is a need to provide a production system.
Disclosure of Invention
In order to solve the technical problems, the utility model aims to provide a production system of kungfu acyl chloride, which is environment-friendly, can realize automatic control and is simple to operate.
In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a clean environmental protection kungfu acyl chloride production system, includes photochemical reaction cauldron and product storage tank, its characterized in that: the utility model discloses a photochemical reaction kettle, including the photochemical reaction kettle, be provided with the solid material of kungfu acid and add the mouth, be provided with tail gas pipeline, material outlet pipeline, nitrogen gas pipeline, DMF and add pipeline, kungfu acyl chloride and add pipeline and phosgene access pipeline on the photochemical reaction kettle, wherein, the phosgene access pipeline passes through the phosgene flow control valve and links to each other with the phosgene buffer tank, the phosgene buffer tank links to each other with the phosgene vaporizer, the import of phosgene vaporizer is provided with the phosgene flowmeter, be provided with nitrogen gas control valve on the nitrogen gas addition pipeline, kungfu acyl chloride adds the pipeline and links to each other with kungfu acyl chloride metering tank through automatic control valve, kufu acyl chloride metering tank links to each other with the product storage tank, DMF adds the pipeline and links to each other with the DMF metering tank through automatic control valve, be provided with automatic control valve on the material outlet pipeline, the DMF adds the pipeline and links to each other with the product storage tank through automatic control valve.
DMF and cyhaloxyfop are metered in the photochemical kettle through an MDF metering tank and a cyhalofop metering tank, cyhalofop acid is added, stirring is started, nitrogen is filled through a nitrogen pipeline, air in the photochemical kettle is driven away, liquid phosgene enters a phosgene flowmeter, and the liquid phosgene enters a phosgene vaporizer with heating medium of 0.095Mpa (G) low-pressure steam for vaporization after metering. The gasified phosgene enters a phosgene buffer tank and enters an photochemical kettle through a phosgene flow regulating valve.
And (3) carrying out photochemical reaction, after the reaction is finished, introducing nitrogen again, driving away unreacted phosgene in the reaction vessel, standing (DMF is sunk at the bottom), opening a material outlet pipeline, wherein the bottom end of the material outlet pipeline is positioned at the middle upper part of the photochemical kettle, extruding the product part at the upper part to a product storage tank, and then adding the gongfu acid in proportion to continue the reaction. Repeating the above steps for three times, and then extruding all the kungfu acyl chloride on the DMF.
In the scheme, the method comprises the following steps: the DMF measuring tank is connected with the DMF storage tank. Preferably: and the DMF metering tank is connected with the DMF storage tank through a transfer pump. DMF in the DMF tank was drawn into and metered through a DMF metering tank.
In the scheme, the method comprises the following steps: the kungfu acyl chloride metering tank is connected with the product storage tank through a transfer pump.
The beneficial effects are that: the system adopts the kungfu acyl chloride as a solvent, reduces the use of other organic solvents, reduces the cost, improves the yield, simultaneously only needs to pour out part of the products after the reaction, reduces the post-treatment process, improves the production efficiency, and simultaneously synthesizes phosgene as a raw material, is clean and environment-friendly, and can realize automatic feeding, reduce the contact of operators on the materials, avoid the throwing of the materials and the like through the design of the production system.
Drawings
FIG. 1 is a process flow diagram of the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and examples.
Example 1
The utility model provides a clean environmental protection kungfu acyl chloride production system, includes photochemical reaction cauldron 1 and product storage tank 2, be provided with kungfu acid solid material on the photochemical reaction cauldron 1 and add entry 101, be provided with tail gas pipeline 102, material outlet line 103, nitrogen gas pipeline 104, DMF add pipeline, kungfu acyl chloride add pipeline and phosgene and let in the pipeline on the photochemical reaction cauldron 1, wherein, the phosgene lets in the pipeline and links to each other with phosgene buffer tank 4 through phosgene flow control valve 3, the phosgene buffer tank 4 links to each other with phosgene vaporizer 5, the import of phosgene vaporizer 5 is provided with phosgene flowmeter 6, be provided with nitrogen gas control valve 7 on the nitrogen gas add pipeline 104, kungfu acyl chloride add the pipeline and link to each other with kufu acyl chloride metering tank 9 through automatic control valve 8, kufu acyl chloride metering tank 9 links to each other with product storage tank 2 through the transfer pump metering or also can utilize the high level difference to realize adding kufu acyl chloride into kufu acyl chloride tank.
The DMF addition line is connected to a DMF metering tank 10 via an automatically controlled valve 8, the DMF metering tank 10 is connected to a DMF tank 11, preferably the DMF metering tank 10 is connected to the DMF tank 11 via a transfer pump.
An automatic control valve 8 is arranged on the material outlet pipeline 103, the material outlet pipeline is connected with the product storage tank 2, and an automatic control valve 8 is arranged on the tail gas pipeline 102.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (4)
1. The utility model provides a clean environmental protection kungfu acyl chloride production system, includes photochemical reaction cauldron and product storage tank, its characterized in that: the photochemical reaction kettle is provided with a cyhalofop acid solid material inlet, a tail gas pipeline, a material outlet pipeline, a nitrogen pipeline, a DMF (dimethyl formamide) adding pipeline, a cyhalofop acyl chloride adding pipeline and a phosgene inlet pipeline are arranged on the photochemical reaction kettle, wherein the phosgene inlet pipeline is connected with a phosgene buffer tank through a phosgene flow regulating valve, the phosgene buffer tank is connected with a phosgene vaporizer, the inlet of the phosgene vaporizer is provided with a phosgene flowmeter, the nitrogen adding pipeline is provided with a nitrogen control valve, the cyhalofop acyl chloride adding pipeline is connected with a cyhalofop acyl chloride metering tank through an automatic control valve, the cyhalofop acyl chloride metering tank is connected with a product storage tank, the DMF adding pipeline is connected with the DMF metering tank through an automatic control valve, the material outlet pipeline is provided with an automatic control valve, the material outlet pipeline is connected with the product storage tank, and the tail gas pipeline is provided with an automatic control valve.
2. The clean and environment-friendly kungfu acyl chloride production system according to claim 1, which is characterized in that: the DMF measuring tank is connected with the DMF storage tank.
3. The clean and environment-friendly kungfu acyl chloride production system as claimed in claim 2, wherein: and the DMF metering tank is connected with the DMF storage tank through a transfer pump.
4. The clean and environment-friendly kungfu acyl chloride production system according to claim 3, wherein: the kungfu acyl chloride metering tank is connected with the product storage tank through a transfer pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320595859.6U CN219580541U (en) | 2023-03-24 | 2023-03-24 | Clean environment-friendly kungfu acyl chloride production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320595859.6U CN219580541U (en) | 2023-03-24 | 2023-03-24 | Clean environment-friendly kungfu acyl chloride production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219580541U true CN219580541U (en) | 2023-08-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320595859.6U Active CN219580541U (en) | 2023-03-24 | 2023-03-24 | Clean environment-friendly kungfu acyl chloride production system |
Country Status (1)
| Country | Link |
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| CN (1) | CN219580541U (en) |
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2023
- 2023-03-24 CN CN202320595859.6U patent/CN219580541U/en active Active
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