CN217887999U - Amine synthesis device in fipronil process - Google Patents
Amine synthesis device in fipronil process Download PDFInfo
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- CN217887999U CN217887999U CN202221725900.9U CN202221725900U CN217887999U CN 217887999 U CN217887999 U CN 217887999U CN 202221725900 U CN202221725900 U CN 202221725900U CN 217887999 U CN217887999 U CN 217887999U
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Abstract
An amine combination device in a fipronil process comprises a reaction tank body, wherein a first partition plate is arranged in the reaction tank body, an internal area of the reaction tank body above the first partition plate is partitioned into a fluorobenzene raw material bin and a dimethylamine raw material bin, and an internal area of the reaction tank body below the first partition plate is a reaction bin; a blanking hole is formed in the bottom surface of the first partition plate, a material distribution mechanism is arranged in the reaction tank body below the first partition plate, a feeding hole is formed in the top surface of the material distribution mechanism, and a material distribution hole is formed in the bottom surface of the material distribution mechanism; the top of the reaction tank body is provided with a motor, a driving shaft of the motor downwards penetrates through the top of the reaction tank body and is connected with a rotating shaft arranged in the reaction tank body through a shaft, the rotating shaft penetrates through the material distribution mechanism and is fixedly connected with the material distribution mechanism, and the lower part of the rotating shaft is provided with a stirring blade. The patent of the utility model adopts the above structure, can realize even cloth and effectively promote the mixed degree between the reactant to can retrieve back secondary reaction to the part of not reacting completely, improve reaction effect.
Description
Technical Field
The utility model relates to a fipronil production technical field, concretely is an amine chemical synthesis device in fipronil technology.
Background
In the fipronil production process, the first step is to synthesize 2, 6-dichloro-4-trifluoromethylaniline by fluorobenzene and dimethylamine, the reaction process comprises amination, chlorination hydrolysis and the like, wherein in the amination process, fluorobenzene and dimethylamine are required to be put into a reaction device in sequence, and the reaction efficiency is directly influenced due to the uniform mixing degree.
Disclosure of Invention
The utility model aims to solve the technical problem that an amine chemical synthesis device in fipronil technology is provided, can realize even cloth and effectively promote the mixed degree between the reactant to can retrieve back secondary reaction to the part of not reacting completely, improve reaction effect.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: an amine chemical synthesis device in a fipronil process comprises a reaction tank body, wherein a first partition plate is arranged in the reaction tank body, an internal area of the reaction tank body above the first partition plate is partitioned to form a fluorobenzene raw material bin and a dimethylamine raw material bin, and an internal area of the reaction tank body below the first partition plate is a reaction bin;
the bottom surface of the first partition plate is provided with a blanking hole, a material distribution mechanism is arranged in the reaction tank body below the first partition plate, the top surface of the material distribution mechanism is provided with a feeding hole, and the bottom surface of the material distribution mechanism is provided with a material distribution hole;
the top of the reaction tank body is provided with a motor, a driving shaft of the motor downwards penetrates through the top of the reaction tank body and is connected with a rotating shaft arranged in the reaction tank body through a shaft, the rotating shaft penetrates through the material distribution mechanism and is fixedly connected with the material distribution mechanism, and the lower part of the rotating shaft is provided with stirring blades.
In a preferred scheme, the top of the fluorobenzene raw material cabin and the dimethylamine raw material cabin are respectively provided with a feeding pipe.
In the preferred scheme, the blanking holes in the first partition plate are distributed in a fan shape, a plurality of blanking holes are respectively formed in the fluorobenzene raw material bin and the dimethylamine raw material bin, a feeding hole is formed in the top of the material distribution mechanism, and the size of the feeding hole is the same as that of the blanking holes.
In a preferred scheme, a heating jacket is arranged below the outer wall of the reaction tank body.
In a preferred scheme, two additive input pipes are arranged on the side wall of the reaction tank body below the material distribution mechanism.
In a preferable scheme, a circulating pipe is further arranged on the side wall of the reaction tank body below the material distribution mechanism and connected to a condensing box, and a liquid return pipe is arranged on the condensing box and connected to the side wall of the reaction tank body.
In the preferred scheme, a second partition plate is arranged in the condensation box, a condensation bin is arranged above the second partition plate, and a liquid gathering bin is arranged below the second partition plate;
the circulating pipe extends into the condensation bin from the top of the condensation box and forms an S-shaped pipe section in the condensation bin, and the lower end of the S-shaped pipe section penetrates through the second partition plate and extends into the liquid collecting bin.
In a preferable scheme, a water replenishing pipe is arranged at the upper part of the side wall of the condensing box.
In a preferable scheme, a liquid return pump is arranged on the liquid return pipe.
The utility model provides an amine chemical synthesis device in fipronil technology through adopting above-mentioned structure, has following beneficial effect:
(1) The intermittent blanking purpose of fluorobenzene and dimethylamine is realized through continuous rotation of the material distribution mechanism, and the mixing degree of reactant raw materials can be effectively improved by matching with the stirring blades which are continuously stirred, so that the problem of insufficient reaction is avoided;
(2) After the reaction, the unreacted reactant is recovered and subjected to secondary reaction by heating and distillation, so that the purity of the output product can be ensured.
Drawings
The invention will be further explained with reference to the following figures and examples:
fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic structural view of the first partition plate of the present invention.
Fig. 3 is a schematic structural diagram of the material distributing mechanism of the present invention.
In the figure: the device comprises a reaction tank body 1, a fluorobenzene raw material bin 101, a dimethylamine raw material bin 102, a reaction bin 103, a first partition plate 2, a blanking hole 3, a feeding pipe 4, a material distribution mechanism 5, a feeding hole 501, a material distribution hole 6, an additive input pipe 7, a motor 8, a rotating shaft 9, a stirring blade 10, a heating jacket 11, a discharging pipe 12, a circulating pipe 13, a liquid return pipe 14, a condensation box 15, a second partition plate 16, a condensation bin 161, a liquid collecting bin 162, an S-shaped pipe section 17, a liquid return pump 18 and a water replenishing pipe 19.
Detailed Description
As shown in fig. 1 to 3, an amine chemical combination device in a fipronil process includes a reaction tank 1, wherein a first partition plate 2 is disposed in the reaction tank 1, an internal region of the reaction tank 1 above the first partition plate 2 is partitioned to form a fluorobenzene raw material bin 101 and a dimethylamine raw material bin 102, and an internal region of the reaction tank 1 below the first partition plate 2 is a reaction bin 103;
the bottom surface of the first clapboard 2 is provided with a blanking hole 3, a material distribution mechanism 5 is arranged in the reaction tank body 1 below the first clapboard 2, the top surface of the material distribution mechanism 5 is provided with a feeding hole 501, and the bottom surface of the material distribution mechanism 5 is provided with a material distribution hole 6;
the top of the reaction tank body 1 is provided with a motor 8, a driving shaft of the motor 8 downwards penetrates through the top of the reaction tank body 1 and is connected with a rotating shaft 9 arranged in the reaction tank body 1 through a shaft, the rotating shaft 9 penetrates through the material distribution mechanism 5 and is fixedly connected with the material distribution mechanism 5, and the lower part of the rotating shaft 9 is provided with a stirring blade 10.
In a preferred scheme, the top of the fluorobenzene raw material bin 101 and the top of the dimethylamine raw material bin 102 are both provided with a feeding pipe 4.
In a preferable scheme, the feeding holes 3 on the first partition plate 2 are distributed in a fan shape, a plurality of feeding holes 3 are respectively arranged in the fluorobenzene raw material bin 101 and the dimethylamine raw material bin 102, a feeding hole 501 is arranged at the top of the material distribution mechanism 5, and the size of the feeding hole 501 is the same as that of the feeding hole 3.
In a preferred scheme, a heating jacket 11 is arranged below the outer wall of the reaction tank body 1.
In a preferred scheme, two additive input pipes 7 are arranged on the side wall of the reaction tank body 1 below the material distribution mechanism 5.
In a preferable scheme, a circulating pipe 13 is further arranged on the side wall of the reaction tank body 1 below the material distributing mechanism 5, the circulating pipe 13 is connected to a condensing tank 15, a liquid return pipe 14 is arranged on the condensing tank 15, and the liquid return pipe 14 is connected to the side wall of the reaction tank body 1.
In a preferable scheme, a second partition plate 16 is arranged in the condensation tank 15, a condensation bin 161 is arranged above the second partition plate 16, and a liquid collecting bin 162 is arranged below the second partition plate 16;
the circulating pipe 13 extends into the condensation chamber 161 from the top of the condensation chamber 15, and forms an "S" shaped pipe section 17 in the condensation chamber 161, and the lower end of the "S" shaped pipe section 17 passes through the second partition 16 and extends into the liquid collecting chamber 162.
In a preferred scheme, a water replenishing pipe 19 is arranged at the upper part of the side wall of the condensation box 15.
In a preferred scheme, a liquid return pump 18 is arranged on the liquid return pipe 14.
By adopting the amine synthesis device in the fipronil process, when the heptyl ester is synthesized:
as shown in fig. 1, add fluorobenzene and dimethylamine in the raw material storehouse 101 of fluorobenzene and the raw material storehouse 102 of dimethylamine through the inlet pipe 4 in advance, then start motor 8, it is rotatory to make motor 8 drive feed mechanism 5, when feed hole 3 is aimed at to feed hole 501 in 5 tops of feed mechanism, realize the unloading of corresponding reactant, the reactant that falls is dispersed in retort body 1 bottom by the equipartition in branch hole 6, cooperate pivot 9 to drive stirring vane 10 through the unloading that lasts and carry out the continuous rotatory stirring, can effectively guarantee the mixed degree between the reactant.
In the above process, the additive input pipes 7 are simultaneously added with the catalyst and heated by the heating jacket 11, wherein one additive input pipe 7 is added with water, and the other additive input pipe 7 is added with solid alkali.
After the reaction, the temperature is raised and heated by controlling the heating jacket 11, the mixed solution of the reactant and the product is heated and distilled, so that the fluorobenzene and the dimethylamine raw materials are converted into gaseous state and enter the S-shaped pipe section 17 through the circulating pipe 13, condensed and liquefied in the S-shaped pipe section 17 and then gathered in the liquid gathering bin 162, and then the condensed and liquefied gas is returned to the reaction tank body 1 through the liquid returning pump 18 in cooperation with the liquid returning pump 14 to perform secondary reaction again.
After the reaction operation is completed, the discharging pipe 12 is opened to discharge the produced heptyl ester liquid material.
Claims (9)
1. An amine combination device in a fipronil process is characterized in that: the reaction tank comprises a reaction tank body (1), wherein a first partition plate (2) is arranged in the reaction tank body (1), an internal area of the reaction tank body (1) above the first partition plate (2) is partitioned into a fluorobenzene raw material bin (101) and a dimethylamine raw material bin (102), and an internal area of the reaction tank body (1) below the first partition plate (2) is a reaction bin (103);
a blanking hole (3) is formed in the bottom surface of the first partition plate (2), a material distribution mechanism (5) is arranged in the reaction tank body (1) below the first partition plate (2), a feeding hole (501) is formed in the top surface of the material distribution mechanism (5), and a material distribution hole (6) is formed in the bottom surface of the material distribution mechanism (5);
the reactor is characterized in that a motor (8) is arranged at the top of the reactor body (1), a driving shaft of the motor (8) downwards penetrates through the top of the reactor body (1) and is connected with a rotating shaft (9) arranged in the reactor body (1) through a shaft, the rotating shaft (9) penetrates through the material distribution mechanism (5) and is fixedly connected with the material distribution mechanism (5), and stirring blades (10) are arranged on the lower portion of the rotating shaft (9).
2. The amine synthesis device in the fipronil process according to claim 1, characterized in that: the top of the fluorobenzene raw material bin (101) and the dimethylamine raw material bin (102) are both provided with a feeding pipe (4).
3. The amine synthesis device in the fipronil process according to claim 1, characterized in that: blanking hole (3) on first baffle (2) be fan-shaped distribution, be equipped with a plurality of blanking holes (3) in fluorobenzene raw materials storehouse (101) and the dimethylamine raw materials storehouse (102) respectively, feed mechanism (5) top is equipped with one feed port (501), feed port (501) size is the same with blanking hole (3).
4. The apparatus for synthesizing amine in fipronil process according to claim 1, wherein: a heating jacket (11) is arranged below the outer wall of the reaction tank body (1).
5. The amine synthesis device in the fipronil process according to claim 1, characterized in that: two additive input pipes (7) are arranged on the side wall of the reaction tank body (1) below the material distribution mechanism (5).
6. The amine synthesis device in the fipronil process according to claim 1, characterized in that: the reaction tank is characterized in that a circulating pipe (13) is further arranged on the side wall of the reaction tank body (1) below the material distribution mechanism (5), the circulating pipe (13) is connected to a condensing box (15), a liquid return pipe (14) is arranged on the condensing box (15), and the liquid return pipe (14) is connected to the side wall of the reaction tank body (1).
7. The amine synthesis device in the fipronil process according to claim 6, characterized in that: a second partition plate (16) is arranged in the condensation box (15), a condensation bin (161) is arranged above the second partition plate (16), and a liquid gathering bin (162) is arranged below the second partition plate (16);
the circulating pipe (13) extends into the condensation bin (161) from the top of the condensation tank (15), an S-shaped pipe section (17) is formed in the condensation bin (161), and the lower end of the S-shaped pipe section (17) penetrates through the second partition plate (16) and extends into the liquid collecting bin (162).
8. The amine synthesis device in the fipronil process according to claim 6, characterized in that: and a water replenishing pipe (19) is arranged at the upper part of the side wall of the condensing box (15).
9. The amine synthesis device in the fipronil process according to claim 6, characterized in that: a liquid return pump (18) is arranged on the liquid return pipe (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221725900.9U CN217887999U (en) | 2022-07-06 | 2022-07-06 | Amine synthesis device in fipronil process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221725900.9U CN217887999U (en) | 2022-07-06 | 2022-07-06 | Amine synthesis device in fipronil process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217887999U true CN217887999U (en) | 2022-11-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221725900.9U Active CN217887999U (en) | 2022-07-06 | 2022-07-06 | Amine synthesis device in fipronil process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217887999U (en) |
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2022
- 2022-07-06 CN CN202221725900.9U patent/CN217887999U/en active Active
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