CN111974330A - Multistage continuous reaction tower - Google Patents

Abstract

The invention discloses a multi-stage continuous reaction tower, comprising a skirt seat and a body vertically arranged on the skirt seat, a stirrer is arranged in the body, and the stirrer is composed of a stirring shaft and multi-layer paddles arranged on the stirring shaft. The top of the main body is provided with a transmission device, the upper end of the stirring shaft is connected with the transmission device through a flexible coupling, a plurality of compartment plates are fixedly arranged in the main body to divide the inner space of the main body into a plurality of reaction compartments, and the compartment plates are provided with material channels , the stirring shaft passes through the partition plate through the material channel, a jacket is arranged outside the reaction compartment, and a plurality of baffles are arranged in the reaction compartment. The invention has the advantages of simple structure, high reaction efficiency, large operation flexibility, safety and stability.

Description

A multistage continuous reaction tower

technical field

The invention relates to the technical field of chemical equipment, in particular to a multistage continuous reaction tower.

Background technique

The synthesis device suitable for the existing large-scale continuous production is mostly composed of continuous pipeline reactors to form a reaction system, such as the production devices and processes described in Chinese Patent Publication Nos. CN109608418A, CN109535102A, CN109912541A; , such as the production devices and processes described in Chinese Patent Publication Nos. CN205556506U, CN109810074A and CN110540177A.

The continuous pipeline reactor has few side reactions and high product quality, but it is only suitable for production processes that require short reaction residence time and fast reaction speed, and is not suitable for material synthesis processes with long reaction residence time. In addition, the continuous pipeline reactor also needs a large driving kinetic energy to overcome the pipeline resistance and consume more electric energy.

The reaction system composed of multiple kettles connected in series is suitable for a process with a longer reaction residence time, but has the following shortcomings:

(1) A large volume of reactors and a large number of single reactors are required to be connected in series to form an array in order to achieve an effective conversion rate.

(2) There is the disadvantage of complex control systems of DCS and SIS systems in the entire series of multiple kettles. Corresponding control valves and safety facilities must be equipped on each single kettle. There are many control points coexisting, and there will be a high probability of error. report the odds.

(3) There are many dynamic and static sealing points in the series of multiple kettles, and the safety risk is high. Especially for the continuous production process that requires high temperature and high pressure, the connecting pipeline between the kettle and the kettle has a large safety hazard.

(4) The entire series of multiple reactors requires a larger workshop and more floor space.

In view of the shortcomings of the continuous pipeline reactor and the reaction system composed of multiple reactors in series, researchers have developed a multi-stage continuous reaction tower reactor.

For example, Chinese Patent Publication No. CN1517299A discloses a device for preparing chlorine dioxide, which is a tower reactor, which includes a chassis and a multi-layer tray in the tower, and a gas distributor is arranged in each layer of the tray. And the downcomer, the reaction liquid input from the top of the tower descends layer by layer through the overflow of the downcomer, and maintains a certain liquid level in each layer of the tray, forming a kind of continuous multi-stage reactor, the material is in the tower The continuous multi-stage reaction greatly improves the utilization rate of materials, the conversion rate of sodium chlorate reaches more than 95%, and the molar ratio of chlorine dioxide and chlorine in the product reaches 1.9:1.

Another example is Chinese Patent Publication No. CN101653711A, which discloses a multi-stage guide flow bubble column reactor and a production process. The reaction section is composed of a reaction column connected to a guide plate; the liquid phase distributor is located at the upper end of the tower body, and the microbubble generator is located at the The lower end of the tower body; the top of the tower is provided with an exhaust port, the bottom of the tower is provided with a liquid discharge port, the upper end of the reaction section is provided with a liquid-phase feed port, and the lower end of the reaction section is provided with a gas-phase feed port; the reaction section is more than two stages. The liquid-phase raw materials are pumped into the tower through the liquid-phase distributor. Under the action of gravity, the raw materials flow downward through the reaction sections of all levels in turn; the gas-phase raw materials are pumped into the tower through the Under the action of , the microbubbles move upward, contact with the liquid-phase raw materials in countercurrent, and the corresponding reaction occurs under the guiding action of the guide plate, the liquid-phase reaction product is discharged from the bottom of the tower, and the gas-phase reaction product is discharged from the top of the tower.

Another example is Chinese Patent Publication No. CN102585191A, which discloses a new type of tower reactor and its application for continuous production of polyester polyols, focusing on a multi-stage bubbling tower reactor, which is mainly composed of an outer tower and a tower core embedded. It can be used in the esterification stage and polycondensation stage of continuous production of polyester polyol, or in the transesterification of dicarboxylic acid ester and polyol. By adopting this continuous production process and device, the process residence time is uniform and controllable, the process heat transfer and mass transfer are strengthened, the operation cost is effectively reduced, and the flexible production requirements are met.

Another example is Chinese Patent Publication No. CN104130140A, which discloses a production process and a reaction device for 3-amino-1,2-propanediol. - a multi-stage tower fluidized bed continuous reaction device for amino-1,2-propanediol, including a mixer, a multi-stage tower reactor, an evaporator, a crystallization kettle, a condenser, an absorption tower and a circulating pump, the multi-stage tower reactor The tower reactor is a tower reactor with internal components, and the production process includes steps such as raw material mixing, reaction, deamination dehydration, crystallization and desalination, etc. The invention uses a multistage tower reactor with internal components to achieve high Efficient continuous production not only ensures sufficient reaction volume, but also realizes a continuous reaction similar to plug flow. The overall device is relatively simple, has strong operability, and has a large production capacity. The process conditions in the 1,2-propanediol process make the reaction yield increase to more than 90%.

Another example is Chinese Patent Publication No. CN210885872U, which discloses a production device for continuously preparing anhydrous formaldehyde alcohol solution for glyphosate, including: a paraformaldehyde transfer device, a multistage reaction connected with the paraformaldehyde transfer device A dehydration tower communicated with the multistage reactor, the top of the dehydration tower is connected with a condenser, and the bottom of the tower is connected with a reboiler; wherein, the multistage reactor is a horizontal cylindrical reactor , including: a material feeding port arranged at the head end of the reactor and a material outlet arranged at the end; A reaction chamber; wherein, a liquid channel is arranged between adjacent reaction chambers. The production device can continuously prepare anhydrous formaldehyde alcohol solution, and can effectively reduce the moisture content of the solution, which meets the production requirements of glyphosate, and is beneficial to realize the continuous production of glyphosate.

Another example is Chinese Patent Publication No. CN111097358A, which discloses a reaction recovery system for continuous synthesis of polyamide, including a multi-stage internal circulation tower reactor and a diamine recovery tower. The reactor is conducive to promoting the liquid phase inside each stage of the reaction unit. Circulating mixing, the diamine recovery tower can separate and recover the diamine components in the mixed steam in time. The entire reaction recovery system has the advantages of high heat exchange efficiency, low energy demand, and low equipment investment and maintenance expenses.

The above tower reactors for multi-stage continuous reaction have their own shortcomings, such as complex structure, large equipment investment, or difficult operation, difficult to control the reaction process, or short reaction residence time and low conversion rate. Therefore, it is urgent to develop a multi-stage continuous reaction tower reactor that meets the requirements of long reaction residence time, high conversion rate, small footprint and low safety risk.

SUMMARY OF THE INVENTION

The purpose of the present invention is to provide a multi-stage continuous reaction tower with simple structure, high reaction efficiency, large operation flexibility, safety and stability, aiming at the deficiencies of the prior art.

In order to achieve the above purpose, the technical solution adopted in the present invention is: a multi-stage continuous reaction tower, comprising a skirt seat and a body vertically arranged on the skirt seat, a stirrer is arranged in the body, and the stirring The mixer is composed of a stirring shaft and multi-layer paddles arranged on the stirring shaft. The top of the main body is provided with a transmission device, and the upper end of the stirring shaft is connected with the transmission device through a flexible coupling, so A plurality of compartment plates are fixedly arranged in the body to divide the inner space of the body into a plurality of reaction compartments. The compartment plate is provided with a material channel, and the stirring shaft passes through the material channel through the material channel. The compartment plate is provided with a jacket outside the reaction compartment, and a plurality of baffles are arranged in the reaction compartment.

Preferably, a lower support is fixedly arranged at the bottom of the inside of the main body, and the lower end of the stirring shaft is supported on the lower support.

Preferably, a plurality of intermediate shaft support frames are arranged side by side in the main body along the axial direction of the stirring shaft, the intermediate shaft support frames are fixedly arranged on the inner wall of the main body, and the intermediate shaft supports A limit hole is arranged on the frame, and the limit hole is sleeved on the stirring shaft to limit the radial swing of the stirring shaft.

Preferably, the stirring shaft is composed of a plurality of stirring shaft units, and the stirring shaft units are connected by couplings.

Preferably, at least one material inlet is further provided at the lower part of the body.

Preferably, the upper part of the main body is further provided with at least one material outlet.

Preferably, the bottom of the body is also provided with a material discharge port.

Preferably, the body is also provided with a temperature measurement port, a pressure detection port and a connecting port.

Preferably, the reaction compartment is also provided with a manhole.

The multi-stage continuous reaction tower of the present invention is fixedly provided with a plurality of compartment plates in the straight part of the body, and the inner space of the body is divided into a plurality of reaction compartments to form a multi-stage series reaction space, which effectively improves the reaction efficiency.

The reaction compartment of the multi-stage continuous reaction tower of the present invention is provided with a plurality of baffles, which can increase the turbulence of the liquid, promote the uniform mixing of the reactant stream, prevent the fluid from laterally flowing in a circle, and effectively prevent the reactant stream from staying. dead zone. The baffle plate cooperates with the multi-layer paddles arranged on the stirring shaft to make the material in the reaction compartment form a longitudinal circulation, so that the reaction material can move quickly and fully mixed, which is conducive to the rapid reaction of the material, and achieves rapid and stable reaction. The heat exchange function of the heat medium in the jacket outside the compartment further improves the efficiency of the reaction.

The body of the multistage continuous reaction tower of the present invention is also provided with a temperature measurement port, a pressure detection port and a connecting port. The temperature measurement interface distributed outside the cylinder can facilitate the installation of temperature measurement sensors, so as to facilitate the automatic control of DCS and SIS systems, and play the role of continuous and dynamic monitoring of the temperature in each reaction compartment. DCS feedbacks the temperature value of each reaction compartment Control the opening degree of the heat medium in and out of the jacket, so as to control the temperature of each chamber. It is convenient to connect the venting and pressure-relieving valve on the nozzle, and the pressure detection port and the venting valve connected to the nozzle can adjust the pressure balance in the tower. The pressure detection port can be easily installed with a pressure sensor, so as to facilitate the automatic control of the DCS and SIS systems. According to the data feedback of the pressure detection, the DCS and SIS systems control the opening and closing operations of the venting and pressure relief valve.

In the main body of the multi-stage continuous reaction tower of the present invention, a plurality of intermediate shaft support frames are arranged in parallel along the axial direction of the stirring shaft. The hole is sleeved on the stirring shaft to limit the radial swing of the stirring shaft, which effectively improves the stability and reliability of the operation of the device. The stirring shaft is composed of multi-section stirring shaft units. The stirring shaft units are connected by a coupling, and the upper end of the stirring shaft is connected with the transmission device through a flexible coupling, which effectively solves the problem of thermal expansion of the stirring shaft and further improves the multi-stage continuous reaction. The stability and reliability of the operation of the tower.

The reaction compartment of the multi-stage continuous reaction tower of the present invention is also provided with a plurality of manholes, which facilitates the assembly of the stirring shaft and the paddle, as well as routine maintenance.

According to the actual production situation, the body of the multi-stage continuous reaction tower of the present invention can be formed by integrally welding a plurality of tower sections, and there is no need for butt flanges between each section of the tower body, which significantly reduces the dynamic and static sealing points, and effectively improves the Device runtime security.

Compared with the prior art, the present invention has the following advantages:

1. The structure is simple and the operation is convenient. The body of the multi-stage continuous reaction tower of the present invention is provided with a temperature measurement interface, a pressure detection port, a nozzle and a manhole, and the temperature measurement interface distributed outside the cylinder can facilitate the installation of temperature measurement sensors. It plays the role of continuous and dynamic monitoring of the temperature in each reaction compartment; it is easy to connect the venting and pressure relief valve on the nozzle, and the pressure detection port can be easily installed with a pressure sensor; thus it is convenient to realize the automatic control of DCS and SIS systems, according to the data of pressure detection. Feedback is controlled by the DCS and SIS systems to control the opening and closing operation of the venting and pressure relief valve, and the opening degree of the heat medium in and out regulating valve in the jacket is controlled by the temperature numerical feedback of each reaction compartment, thereby controlling the temperature of each compartment.

2. The reaction efficiency is high. The multi-stage continuous reaction tower of the present invention is fixedly provided with a plurality of compartment plates in the straight part of the body, and the inner space of the body is divided into a plurality of reaction compartments to form a multi-stage series reaction space, which effectively improves the efficiency of the reaction. The efficiency of the reaction is improved; multiple baffles are arranged in the reaction compartment, which increases the turbulence of the liquid, promotes the uniform mixing of the reactant stream, prevents the fluid from horizontal circular flow, and effectively eliminates the dead zone where the reactant stream stays; the baffles and The multi-layer paddles arranged on the stirring shaft cooperate to make the material in the reaction compartment form a longitudinal circulation, which is conducive to the rapid reaction of the material and the effect of rapid heat exchange with the heat medium, which further improves the efficiency of the reaction and the stability of the operation. .

3. Safe and stable, the main body of the multi-stage continuous reaction tower of the present invention is provided with a plurality of intermediate shaft support frames in parallel along the axial direction of the stirring shaft. The position hole and the limit hole are sleeved on the stirring shaft to limit the radial swing of the stirring shaft, which effectively improves the stability and reliability of the device operation; the stirring shaft is composed of multi-section stirring shaft units, and the stirring shaft units pass through each other. The upper end of the stirring shaft is connected with the transmission device through a flexible coupling, which solves the problem of thermal expansion of the stirring shaft and further improves the stability and reliability of the operation of the multi-stage continuous reaction tower.

4. The operation flexibility is large. The multi-stage continuous reaction tower of the present invention combines the respective advantages of the pipeline reactor and the multi-kettle in series, which can meet the requirements of different synthesis reactions that require different reaction residence times, and greatly improves the scope of application.

Description of drawings

FIG. 1 is a schematic structural diagram of Embodiment 1 of the present invention.

2 is a schematic diagram of the flow direction of the reaction liquid in the reaction compartment of the present invention.

FIG. 3 is a schematic top view of the position of the paddle and the baffle of the present invention.

Among them; 1 is the transmission device, 2 is the pressure detection port, 3 is the material outlet, 4 is the jacket, 5 is the temperature measurement interface, 6 is the paddle, 7 is the compartment plate, 8 is the baffle plate, and 9 is the skirt seat , 10 is the material discharge port, 11 is the lower support, 12 is the material inlet, 13 is the manhole, 14 is the intermediate shaft support frame, 15 is the material channel, 16 is the stirring shaft, 17 is the reaction compartment, and 18 is the flexible coupling 19 is the nozzle, 20 is the body, and 21 is the limiting hole.

Detailed ways

As shown in the drawings, the multi-stage continuous reaction tower of the present invention includes a skirt 9 and a body 20 vertically arranged on the skirt 9. The body 20 is provided with a stirrer, and the stirrer is composed of the stirring shaft 16 and the main body 20. The paddle 6 on the stirring shaft 16 is constituted, the top of the main body 20 is provided with a transmission device 1, the upper end of the stirring shaft 16 is connected with the transmission device 1 through a flexible coupling 18, and a plurality of compartment plates 7 are fixed in the straight part of the main body 20 to connect. The inner space of the main body 20 is divided into a plurality of reaction compartments 17. The compartment plate 7 is provided with a material channel 15. The stirring shaft 16 penetrates the compartment plate 7 through the material channel 15. The reaction compartment 17 is provided with a jacket 4 outside the reaction compartment. A plurality of baffles 8 are arranged in the bin 17 . The bottom of the main body 20 is fixedly provided with a lower support 11 , and the lower end of the stirring shaft 16 is supported on the lower support 11 . In the main body 20, a plurality of intermediate shaft support frames 14 are arranged in parallel along the axial direction of the stirring shaft 16. The intermediate shaft support frames 14 are fixedly arranged on the inner wall of the main body 20, and the intermediate shaft support frame 14 is provided with a limit hole 21. The limit hole 21 It is sleeved on the stirring shaft 16 to limit the radial swing of the stirring shaft 16 . The stirring shaft 16 is composed of a plurality of stirring shaft units, and the stirring shaft units are connected by couplings. The lower part of the main body 20 is also provided with at least one material inlet 12, the upper part of the main body 20 is also provided with at least one material outlet 3, the bottom of the main body 20 is also provided with a material discharge port 10, and the main body 20 is also provided with a temperature measurement interface 5 and a pressure detection port 2 and the connecting port 19, the reaction compartment 17 is also provided with at least one manhole 13.

The operation process of the multi-stage continuous reaction tower of the present invention is as follows: the reaction materials continuously enter a plurality of reaction compartments 17 from the material inlet 12 to react in sequence. Under the cooperative action of the paddles 6 on the 16, a longitudinal circulation is formed, so that the reaction materials move rapidly and are fully mixed, and the materials react quickly and quickly exchange heat with the heat medium in the jacket 4 arranged outside the reaction compartment 17, and react. After one reaction compartment 17 completes a part of the reaction, it enters the next reaction compartment through the material channel 15 in turn to continue the reaction, and then continuously flows out from the material outlet 3 after all the reactions are completed. The heat medium in the jacket 4 plays the role of transferring heat, and the reaction temperature of each reaction chamber is controlled by adjusting the flow rate of the heat medium.

The present invention will be further described in detail below through the examples, but the present invention is not limited to the described examples.

Example 1

The multi-stage continuous reaction tower includes a skirt 9 and a body 20 vertically arranged on the skirt 9. The body 20 is provided with a stirrer, and the stirrer consists of a stirring shaft 16 and fourteen-layer paddles arranged on the stirring shaft 16. The top of the main body 20 is provided with a transmission device 1 , the upper end of the stirring shaft 16 is connected to the transmission device 1 through a flexible coupling 18 , and six compartment plates 7 are fixed in the main body 20 to divide the space in the main body 20 into seven The reaction compartment 17 is provided with a material channel 15 on the compartment plate 7. The stirring shaft 16 penetrates the compartment plate 7 through the material channel 15. A jacket 4 is provided outside the reaction compartment 17, and each reaction compartment 17 is provided with a Four baffles 8 . The bottom of the main body 20 is fixedly provided with a lower support 11 , and the lower end of the stirring shaft 16 is supported on the lower support 11 . Two intermediate shaft support frames 14 are arranged side by side in the main body 20 along the axial direction of the stirring shaft 16 , the intermediate shaft support frames 14 are fixedly arranged on the inner wall of the main body 20 , and the intermediate shaft support frame 14 is provided with a limit hole 21 , and the limit hole 21 It is sleeved on the stirring shaft 16 to limit the radial swing of the stirring shaft 16 . The stirring shaft 16 is composed of seven stirring shaft units, and the stirring shaft units are connected by couplings. The lower part of the main body 20 is also provided with a material inlet 12, the upper part of the main body 20 is also provided with a material outlet 3, the bottom of the main body 20 is also provided with a material discharge port 10, and the main body 20 is also provided with a temperature measurement interface 5, a pressure detection port 2 and A manhole 13 is also provided on each reaction compartment 17 for the connection port 19 .

Example 2

The multi-stage continuous reaction tower includes a skirt 9 and a body 20 vertically arranged on the skirt 9. The body 20 is provided with a stirrer, and the stirrer is composed of a stirring shaft 16 and twelve layers of paddles arranged on the stirring shaft 16. The top of the main body 20 is provided with a transmission device 1, the upper end of the stirring shaft 16 is connected to the transmission device 1 through a flexible coupling 18, and five compartment plates 7 are fixedly arranged in the main body 20 to divide the space in the main body 20 into six The reaction compartment 17, the compartment plate 7 is provided with a material channel 15, the stirring shaft 16 penetrates the compartment plate 7 through the material channel 15, the reaction compartment 17 is provided with a jacket 4, and each reaction compartment 17 is provided with three baffles 8. The bottom of the main body 20 is fixedly provided with a lower support 11 , and the lower end of the stirring shaft 16 is supported on the lower support 11 . In the main body 20, three intermediate shaft support frames 14 are arranged side by side along the axial direction of the stirring shaft 16. The intermediate shaft support frames 14 are fixedly arranged on the inner wall of the main body 20. The intermediate shaft support frame 14 is provided with a limit hole 21, and the limit holes 21 are set. It is provided on the stirring shaft 16 to limit the radial swing of the stirring shaft 16 . The stirring shaft 16 is composed of six stirring shaft units, and the stirring shaft units are connected by couplings. The lower part of the main body 20 is also provided with two material inlets 12, the upper part of the main body 20 is also provided with two material outlets 3, the bottom of the main body 20 is also provided with a material discharge port 10, and the main body 20 is also provided with a temperature measurement interface 5 and a pressure detection port 2 and the connecting port 19, each reaction compartment 17 is also provided with a manhole 13.

Example 3

The multi-stage continuous reaction tower includes a skirt 9 and a body 20 vertically arranged on the skirt 9. The body 20 is provided with a stirrer, and the stirrer consists of a stirring shaft 16 and fifteen layers of paddles arranged on the stirring shaft 16. The top of the main body 20 is provided with a transmission device 1, the upper end of the stirring shaft 16 is connected with the transmission device 1 through a flexible coupling 18, and four compartment plates 7 are fixedly arranged in the main body 20 to divide the space in the main body 20 into five The reaction compartment 17 is provided with a material channel 15 on the compartment plate 7. The stirring shaft 16 penetrates the compartment plate 7 through the material channel 15. A jacket 4 is provided outside the reaction compartment 17, and each reaction compartment 17 is provided with a Two baffles 8 . The bottom of the main body 20 is fixedly provided with a lower support 11 , and the lower end of the stirring shaft 16 is supported on the lower support 11 . In the main body 20, four intermediate shaft support frames 14 are arranged side by side along the axial direction of the stirring shaft 16. The intermediate shaft support frames 14 are fixedly arranged on the inner wall of the main body 20, and the intermediate shaft support frame 14 is provided with a limit hole 21. The limit hole 21 It is sleeved on the stirring shaft 16 to limit the radial swing of the stirring shaft 16 . The stirring shaft 16 is composed of five stirring shaft units, and the stirring shaft units are connected by couplings. The lower part of the main body 20 is also provided with three material inlets 12, the upper part of the main body 20 is also provided with three material outlets 3, the bottom of the main body 20 is also provided with a material discharge port 10, and the main body 20 is also provided with a temperature measurement interface 5, a pressure detection port 2 and Two manholes 13 are also provided on each reaction compartment 17 for the connecting port 19 .

Example 4

The multi-stage continuous reaction tower includes a skirt 9 and a body 20 vertically arranged on the skirt 9. An agitator is arranged in the body 20. The agitator is composed of a stirring shaft 16 and eight layers of paddles arranged on the stirring shaft 16. 6, the top of the main body 20 is provided with a transmission device 1, the upper end of the stirring shaft 16 is connected with the transmission device 1 through a flexible coupling 18, and seven compartment plates are fixed in the main body 20. The space in the main body 20 is divided into eight reaction The compartment 17, the compartment plate 7 is provided with a material channel 15, the stirring shaft 16 penetrates the compartment plate 7 through the material channel 15, the reaction compartment 17 is provided with a jacket 4, and each reaction compartment 17 is provided with five baffles 8. The bottom of the main body 20 is fixedly provided with a lower support 11 , and the lower end of the stirring shaft 16 is supported on the lower support 11 . Two intermediate shaft support frames 14 are arranged side by side in the main body 20 along the axial direction of the stirring shaft 16 , the intermediate shaft support frames 14 are fixedly arranged on the inner wall of the main body 20 , and the intermediate shaft support frame 14 is provided with a limit hole 21 , and the limit hole 21 It is sleeved on the stirring shaft 16 to limit the radial swing of the stirring shaft 16 . The stirring shaft 16 is composed of eight stirring shaft units, and the stirring shaft units are connected by couplings. The lower part of the main body 20 is also provided with three material inlets 12, the upper part of the main body 20 is also provided with two material outlets 3, the bottom of the main body 20 is also provided with a material discharge port 10, and the main body 20 is also provided with a temperature measurement interface 5 and a pressure detection port 2 In addition to the connecting port 19, each reaction compartment 17 is also provided with two manholes 13.

Claims (9)

1. A multistage continuous reaction tower comprises a skirt and a body vertically arranged on the skirt, and is characterized in that a stirrer is arranged in the body and consists of a stirring shaft and a plurality of layers of blades arranged on the stirring shaft, a transmission device is arranged at the top end of the body, the upper end of the stirring shaft is connected with the transmission device through a flexible coupling, a plurality of partition plates are fixedly arranged in the body to divide the space in the body into a plurality of reaction partitions, material channels are arranged on the partition plates, the stirring shaft penetrates through the partition plates through the material channels, a jacket is arranged outside the reaction partitions, and a plurality of baffle plates are arranged in the reaction partitions.

2. The multistage continuous reaction column according to claim 1, wherein a lower support is fixedly provided at the bottom of the inside of the body, and the lower end of the stirring shaft is supported on the lower support.

3. The multistage continuous reaction tower as claimed in claim 1, wherein a plurality of intermediate shaft supports are arranged in the body in parallel along the axial direction of the stirring shaft, the intermediate shaft supports are fixedly arranged on the inner wall of the body, and limit holes are arranged on the intermediate shaft supports and are sleeved on the stirring shaft for limiting the radial swing of the stirring shaft.

4. The multistage continuous reaction column according to claim 1, wherein the stirring shaft is composed of a plurality of stirring shaft units, and the stirring shaft units are connected through a coupling.

5. The multistage continuous reaction column according to claim 1, wherein the lower part of the body is further provided with at least one material inlet.

6. The multistage continuous reaction column according to claim 1, wherein the upper part of the body is further provided with at least one material outlet.

7. The multistage continuous reaction column according to claim 1, wherein a material discharge port is further provided at the bottom of the body.

8. The multistage continuous reaction tower as claimed in claim 1, wherein the body is further provided with a temperature measuring interface, a pressure detecting interface and a connecting pipe interface.

9. The multistage continuous reaction column according to claim 1, wherein the reaction compartments are further provided with manholes.

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