CN-224221346-U - Production system for triclosan diazo reaction procedure

Abstract

The utility model relates to the technical field of triclosan production, in particular to a production system for a triclosan diazo reaction process, which comprises an amino sulfate reaction kettle, wherein a discharge port of the amino sulfate reaction kettle is communicated with a heat exchanger, a discharge port of the heat exchanger is communicated with a first feed port of a tubular static mixer, a nitrosylsulfuric acid conveying pipeline is communicated with a second feed port of the tubular static mixer, a discharge port of the tubular static mixer is communicated with a feed pipe of the tubular reactor, an external circulation inlet is arranged on the feed pipe, and discharge pipes of the tubular reactor are respectively communicated with the external circulation inlet and a dilution kettle. According to the production system, the amino sulfate is prepared in advance through the amino sulfate reaction kettle, part of reaction heat is diluted in a first step, the risk of concentrated release of the reaction heat is reduced, and the production safety is improved. The tubular reactor is adopted, so that the reaction time is reduced, side reactions are reduced, the reaction controllability and the reaction yield are improved, and the subsequent post-treatment difficulty and the production cost are reduced.

Inventors

• XIA SHULING
• XU XINYING
• ZHU XIRUI

Assignees

• 山东奥友生物科技股份有限公司

Dates

Publication Date

20260512

Application Date

20250520

Claims (9)

1. 1. The utility model provides a production system that triclosan diazonium reaction process used, its characterized in that includes amino sulfate reation kettle, amino sulfate reation kettle's discharge gate intercommunication heat exchanger, the discharge gate intercommunication tubular static mixer's of heat exchanger first feed inlet, nitrosylsulfuric acid pipeline intercommunication tubular static mixer's second feed inlet, tubular static mixer's discharge gate intercommunication tubular reactor's inlet pipe, be equipped with the extrinsic cycle entry on the inlet pipe, tubular reactor's discharging pipe communicates respectively extrinsic cycle entry and dilution cauldron.
2. 2. The production system for the triclosan diazo reaction process of claim 1, wherein the discharge port of the amino sulfate reaction kettle is communicated with the feed port of the heat exchanger through an amino sulfate delivery pump.
3. 3. The system of claim 1 wherein said nitrosylsulfuric acid delivery conduit is through a second feed port of a nitrosylsulfuric acid metering pump.
4. 4. The production system for the triclosan diazo reaction process of claim 1, wherein the tubular static mixer comprises a body, one end of the body is provided with a first feed inlet and a second feed inlet, the other end of the body is provided with a discharge outlet, a plurality of left-handed guide plates and right-handed guide plates are alternately arranged in the body, and a baffle plate with a hollowed-out structure is arranged between two adjacent left-handed guide plates and right-handed guide plates.
5. 5. The system of claim 4, wherein the left-handed baffle is S-shaped and the right-handed baffle is diamond-shaped.
6. 6. The production system for the triclosan diazo reaction process of claim 1, wherein the tubular reactor comprises a body, a refrigerant inlet is formed in one side of the bottom of the body, a refrigerant outlet is formed in one side of the upper portion of the body, a rotating shaft and a material reaction coil are arranged in the body, a feeding pipe and a discharging pipe which are communicated with the material reaction coil are arranged in the body, one end of the rotating shaft is connected with a motor, and a plurality of stirring components are arranged on the rotating shaft.
7. 7. The production system for a diazo reaction process of triclosan according to claim 6, wherein the plurality of stirring members are a plurality of stirring plates which are arranged on the rotating shaft at equal intervals, and each of the stirring plates has a V-shaped longitudinal section.
8. 8. The system of claim 6, wherein the feed pipe is provided with a purge inlet and the discharge pipe is provided with a wash outlet.
9. 9. The production system for a triclosan diazo reaction process of claim 6, wherein the outlet of the discharge pipe is connected to the external circulation inlet through a circulation pump and a circulation pipe, and the circulation pipe is connected to the dilution tank through a delivery pipe.

Description

Production system for triclosan diazo reaction procedure Technical Field The utility model relates to the technical field of triclosan production, in particular to a production system for a triclosan diazo reaction procedure. Background Triclosan is a safe and efficient broad-spectrum antibacterial agent and is widely applied to daily chemicals, medical treatment and textile industries due to its excellent antibacterial performance. At present, the main industrial process routes at home and abroad basically take dichlorophenol as a raw material, and sequentially carry out etherification reaction, nitroreduction, diazotization and hydrolysis reaction with dichloronitrobenzene, and then the target product is obtained through the procedures of extraction, rectification and the like. However, key procedures for determining production cost and product quality are diazotization and hydrolysis, amino, sulfuric acid and nitriding reagent are put into a reaction kettle for diazotization in the prior art, but the diazotization is a severe exothermic reaction, when reaction heat cannot be transferred in time, interlocking reaction is easy to cause, the diazotization reagent is decomposed slightly, a large amount of toxic nitrous oxide is discharged, the danger of flushing and boiling is generated, diazonium salt is decomposed slightly, a large amount of heat and gas are discharged, and explosion accidents occur. Therefore, in order to solve the above-mentioned problems, it is necessary to develop a production system for the triclosan diazo reaction step. Disclosure of utility model Aiming at the defects of the prior art, the utility model provides a production system for a triclosan diazo reaction procedure, which is used for greatly improving the reaction yield and reducing the reaction risk. In order to solve the technical problems, the technical scheme of the utility model is as follows: the utility model provides a production system that triclosan diazonium reaction process used, includes the amino sulfate reation kettle, amino sulfate reation kettle's discharge gate intercommunication heat exchanger, the discharge gate intercommunication tubular static mixer's of heat exchanger first feed inlet, nitrosylsulfuric acid pipeline intercommunication tubular static mixer's second feed inlet, tubular static mixer's discharge gate intercommunication tubular reactor's inlet pipe, be equipped with the extrinsic cycle entry on the inlet pipe, tubular reactor's discharging pipe communicates respectively extrinsic cycle entry and dilution cauldron. As an improved technical scheme, the discharge port of the amino sulfate reaction kettle is communicated with the feed port of the heat exchanger through an amino sulfate conveying pump. As an improved technical scheme, the nitrosylsulfuric acid delivery pipeline passes through a second feed inlet of the nitrosylsulfuric acid metering pump. As an improved technical scheme, the tubular static mixer comprises a body, one end of the body is provided with a first feed inlet and a second feed inlet, the other end of the body is provided with a discharge outlet, a plurality of left-handed guide plates and right-handed guide plates are alternately arranged in the body, and baffle plates with hollow structures are arranged between every two adjacent left-handed guide plates and right-handed guide plates. As an improved technical scheme, the left-handed flow guide plate is S-shaped, and the right-handed flow guide plate is diamond-shaped. The improved technical scheme is that the tubular reactor comprises a body, wherein a refrigerant inlet is formed in one side of the bottom of the body, a refrigerant outlet is formed in one side of the upper portion of the body, a rotating shaft and a material reaction coil are arranged in the body, a feeding pipe and a discharging pipe which are communicated with the material reaction coil are arranged in the body, one end of the rotating shaft is connected with a motor, and a plurality of stirring components are arranged on the rotating shaft. As an improved technical scheme, the stirring components are a plurality of stirring plates which are arranged on the rotating shaft at equal intervals, and the longitudinal section of each stirring plate is V-shaped. As an improved technical scheme, a purging and cleaning inlet is formed in the feeding pipe, and a washing liquid outlet is formed in the discharging pipe. As an improved technical scheme, the outlet of the discharging pipe is communicated with the external circulation inlet through a circulating pump and a circulating pipeline, and the circulating pipeline is communicated with the dilution kettle through a conveying pipeline. After the technical scheme is adopted, the utility model has the beneficial effects that: Because the production system that triclosan diazonium reaction process used, including the amino sulfate reation kettle, amino sulfate reation kettle's discharge gate intercommunication h