CN212524102U - Bromine oxidation reaction production system - Google Patents
Bromine oxidation reaction production system Download PDFInfo
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- CN212524102U CN212524102U CN202021103325.XU CN202021103325U CN212524102U CN 212524102 U CN212524102 U CN 212524102U CN 202021103325 U CN202021103325 U CN 202021103325U CN 212524102 U CN212524102 U CN 212524102U
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Abstract
The utility model relates to a bromine oxidation reaction production system, which comprises a bromine pretreatment unit and a main reaction unit connected with the bromine pretreatment unit, wherein the bromine pretreatment unit comprises a bromine dripping tank, a first three-way control valve and a bromine pretreatment cryogenic reaction tank, and the bromine dripping tank is connected with the bromine pretreatment cryogenic reaction tank through the first three-way control valve; the main reaction unit comprises a second three-way control valve, a bromination reaction tank and at least one tail gas treatment device, the first end of the second three-way control valve is connected with the bromine pretreatment copious cooling reaction tank, the second end of the second three-way control valve is connected with the bromination reaction tank, and the at least one tail gas treatment device is connected with the bromination reaction tank. Adopted the utility model discloses a bromine oxidation reaction production system can the substep control system exothermic, avoids ventilating the too fast temperature and risees rapidly to can carry out the aftertreatment to the waste gas that the reaction generated high-efficiently.
Description
Technical Field
The utility model relates to the technical field of chemistry, a bromine oxidation reaction production system is related to.
Background
The 2-amino-5-chlorobenzothiazole compound has unique physiological and biological activity and is widely applied in the fields of pesticide and medicine. 2-amino-5-chlorobenzothiazole is also an important raw material for preparing fluorescent dyes, and has an important position in the synthesis of high-sensitivity color developers. The current general preparation method (WO2017075694) adopts m-chloroaniline as a raw material, acetic acid as a solvent and bromine as an oxidant to react with potassium thiocyanate to prepare the compound. The process has the advantages that the generated intermediate does not need to be refined, and the product can be obtained by a one-pot method; the disadvantages are that the reaction is very obvious in heat release and has certain potential safety hazard.
There is a general need for a bromine oxidation production system suitable for the synthesis of 2-amino-5-chlorobenzothiazole.
SUMMERY OF THE UTILITY MODEL
The utility model aims at solving the problems existing in the prior art and providing a bromine oxidation reaction production system which is convenient for material control, improves production safety system and efficiently treats waste gas.
In order to realize the purpose, the technical scheme of the bromine oxidation reaction production system adopted by the utility model is as follows:
the bromine pretreatment unit comprises a bromine dripping tank, a first three-way control valve and a bromine pretreatment cryogenic reaction tank, wherein the bromine dripping tank is connected with the bromine pretreatment cryogenic reaction tank through the first three-way control valve; the main reaction unit comprises a second three-way control valve, a bromination reaction tank and at least one tail gas treatment device, the first end of the second three-way control valve is connected with the bromine pretreatment copious cooling reaction tank, the second end of the second three-way control valve is connected with the bromination reaction tank, and the at least one tail gas treatment device is connected with the bromination reaction tank.
Preferably, the bromine pretreatment cryogenic reaction tank is provided with a first variable speed stirrer and a temperature controller.
Preferably, the top of the bromination reaction tank is connected with the second end of the second three-way control valve.
Preferably, the top of the bromination reaction tank is connected with the at least one tail gas treatment device.
Preferably, the bromination reaction tank is connected with the at least one tail gas treatment device through a third three-way control valve.
Preferably, the bromination reaction tank is provided with a second variable speed stirrer.
Adopted the utility model discloses a bromine oxidation reaction production system can the stepped control system exothermic, avoids ventilating the too fast temperature and risees rapidly, improves production safety coefficient to can carry out the aftertreatment to the waste gas that the reaction generated high-efficiently, be a safe, economic applicable in the apparatus for producing of 2-amino-5-chlorobenzothiazole class compound.
Drawings
Fig. 1 is a schematic structural diagram of the bromine oxidation reaction production system of the present invention.
Detailed Description
In order to clearly understand the technical contents of the present invention, the following embodiments are specifically illustrated in detail.
As shown in fig. 1, for the embodiment of the bromine oxidation reaction production system provided by the present invention, it includes bromine pretreatment unit and main reaction unit connected with said bromine pretreatment unit, said bromine pretreatment unit includes bromine dripping tank 1, first three-way control valve 2 and bromine pretreatment cryogenic reaction tank 4, said bromine dripping tank 1 is connected with said bromine pretreatment cryogenic reaction tank 4 through said first three-way control valve 2; the main reaction unit include second three-way control valve 8, bromination retort 6 and at least one kind tail gas processing apparatus 7, second three-way control valve 8 first end with bromine preliminary treatment cryrogenic retort 4 be connected, second three-way control valve 8 second end with bromination retort 6 be connected, at least one kind tail gas processing apparatus 7 and bromination retort 6 be connected.
Wherein, the bromine pretreatment cryogenic reaction tank 4 is provided with a first variable speed stirrer 3 and a temperature controller 5.
The top of the bromination reaction tank 6 is connected with the second end of the second three-way control valve 8, and the top of the bromination reaction tank 6 is connected with the at least one tail gas treatment device 7 through a third three-way control valve 9. The bromination reaction tank 6 is provided with a second variable speed stirrer 10.
The utility model discloses use 2-amino-5-chlorobenzothiazole as the example to illustrate the application of this production system, it includes but is not limited to the reaction of following reaction equation:
1) bromine is dripped into a bromine pretreatment cryogenic reaction tank through a first three-way control valve in a bromine dripping tank and is mixed with a solvent in the bromine pretreatment cryogenic reaction tank, in the system, the heat release temperature of bromine dissolution is controlled by cryogenic cooling, the bromine is mixed into a certain proportion, and the bromine is introduced into a bromination reaction tank from a three-way valve at the bottom of the bromine pretreatment cryogenic reaction tank according to a set flow;
2) adding a reaction substrate and a catalyst into a bromination reaction tank, adding the mixed bromine solution into a reaction system through a second three-way control valve, and controlling the oxidation reaction heat of bromine in the system by water cooling;
3) starting stirring reaction at the reaction temperature, and monitoring the reaction to the reaction end point;
4) the bromine-containing tail gas (mainly hydrogen bromide) is discharged to a tail gas treatment device.
Adopted the utility model discloses a bromine oxidation reaction production system can the stepped control system exothermic, avoids ventilating the too fast temperature and risees rapidly, improves production safety coefficient to can carry out the aftertreatment to the waste gas that the reaction generated high-efficiently, be a safe, economic applicable in the apparatus for producing of 2-amino-5-chlorobenzothiazole class compound.
In this specification, the invention has been described with reference to specific embodiments thereof. It will, however, be evident that various modifications and changes may be made thereto without departing from the broader spirit and scope of the invention. The specification and drawings are, accordingly, to be regarded in an illustrative rather than a restrictive sense.
Claims (6)
1. A bromine oxidation reaction production system is characterized by comprising a bromine pretreatment unit and a main reaction unit connected with the bromine pretreatment unit, wherein the bromine pretreatment unit comprises a bromine dripping tank, a first three-way control valve and a bromine pretreatment cryogenic reaction tank; the main reaction unit comprises a second three-way control valve, a bromination reaction tank and at least one tail gas treatment device, the first end of the second three-way control valve is connected with the bromine pretreatment copious cooling reaction tank, the second end of the second three-way control valve is connected with the bromination reaction tank, and the at least one tail gas treatment device is connected with the bromination reaction tank.
2. An oxidation reaction production system for bromine according to claim 1 wherein the deep cryogenic retort for bromine pretreatment is provided with a first variable speed agitator and a temperature controller.
3. The bromine oxidation reaction production system of claim 1, wherein the top of the bromination reaction tank is connected to the second end of the second three-way control valve.
4. An oxidation reaction production system for bromine according to claim 1 wherein the top of the bromination reaction tank is connected to said at least one tail gas treatment unit.
5. The bromine oxidation reaction production system of claim 1, wherein the bromination reaction tank is connected to the at least one tail gas treatment device through a third three-way control valve.
6. An oxidation reaction production system of bromine as in claim 1 wherein the bromination reaction tank is equipped with a second variable speed agitator.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021103325.XU CN212524102U (en) | 2020-06-15 | 2020-06-15 | Bromine oxidation reaction production system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021103325.XU CN212524102U (en) | 2020-06-15 | 2020-06-15 | Bromine oxidation reaction production system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212524102U true CN212524102U (en) | 2021-02-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202021103325.XU Active CN212524102U (en) | 2020-06-15 | 2020-06-15 | Bromine oxidation reaction production system |
Country Status (1)
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| CN (1) | CN212524102U (en) |
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2020
- 2020-06-15 CN CN202021103325.XU patent/CN212524102U/en active Active
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| Date | Code | Title | Description |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Bromine oxidation reaction production system Effective date of registration: 20221121 Granted publication date: 20210212 Pledgee: Industrial Bank Co.,Ltd. Shanghai Pudong Sub branch Pledgor: SHANGHAI BETTERSYN BIOTECH CO.,LTD. Registration number: Y2022310000328 |
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| PE01 | Entry into force of the registration of the contract for pledge of patent right |