CN217450141U

CN217450141U - Continuous esterification reactor

Info

Publication number: CN217450141U
Application number: CN202220668538.XU
Authority: CN
Inventors: 温洪鹏; 佐毅; 韩艳霞
Original assignee: TIANJIN TIANDI CHUANGZHI TECHNOLOGY DEVELOPMENT CO LTD
Current assignee: TIANJIN TIANDI CHUANGZHI TECHNOLOGY DEVELOPMENT CO LTD
Priority date: 2022-03-24
Filing date: 2022-03-24
Publication date: 2022-09-20
Anticipated expiration: 2032-03-24

Abstract

The utility model relates to a continuity esterification reactor, including agitator, reactor and the conveyor of connecting agitator and reactor, the agitator top is provided with the feed inlet, be provided with first (mixing) shaft and second (mixing) shaft in the agitator, mixed agitator motor and stirring drive assembly are installed at the top of agitator, mixed agitator motor can drive first (mixing) shaft and the mutual antiport of second (mixing) shaft through stirring drive assembly. The utility model discloses set up two mutual counter-rotating's (mixing) shafts at the agitator always, can the intensive mixing material for the material intensive mixing sets up circulating device in the reactor simultaneously, makes the deposit material of reactor bottom can be carried to stir the reaction once more to the reactor top, improves the efficiency and the effect of reaction.

Description

Continuous esterification reactor

Technical Field

The utility model belongs to the technical field of chemical industry equipment, especially, continuity esterification reactor.

Background

The esterification reaction is an organic chemical reaction, which is a reaction of alcohol and carboxylic acid or oxygen-containing inorganic acid to generate ester and water, and is divided into three types, namely a reaction of carboxylic acid and alcohol, a reaction of inorganic oxygen-containing acid and alcohol and a reaction of inorganic strong acid and alcohol, wherein the esterification reaction of carboxylic acid and alcohol is reversible and the reaction is very slow, so concentrated sulfuric acid is commonly used as a catalyst. The reaction of polybasic carboxylic acid and alcohol can produce several esters, and the reaction of inorganic strong acid and alcohol is generally quick, and its typical esterification reaction is the reaction of ethyl alcohol and acetic acid to produce ethyl acetate with aromatic smell, so that it is a raw material for making dye and medicine.

The prior esterification reactor has the following problems:

1. the reactants are not thoroughly mixed, the reaction efficiency is low, the reaction is insufficient, the reaction effect is poor, and the waste of raw materials is caused;

2. the problem of material layering or uneven dispersion in the reactor is likely to occur, and the efficiency and effect of the reaction are also affected.

SUMMERY OF THE UTILITY MODEL

The utility model provides a its technical problem take following technical scheme to realize:

a continuous esterification reactor comprises a stirrer, a reactor and a conveying device for connecting the stirrer and the reactor, wherein a feed inlet is formed in the top of the stirrer, a first stirring shaft and a second stirring shaft are arranged in the stirrer, a mixing stirring motor and a stirring transmission assembly are mounted at the top of the stirrer, and the mixing stirring motor can drive the first stirring shaft and the second stirring shaft to rotate in opposite directions through the stirring transmission assembly;

the reactor is internally provided with a heating device and a third stirring shaft, and the reactor is also provided with a circulating device for conveying the material at the bottom in the reactor to the top in the reactor.

The first stirring shaft, the second stirring shaft and the third stirring shaft are respectively provided with two stirring blades, and the third stirring shaft is respectively arranged at two sides of the heating device.

The stirring transmission assembly comprises a worm wheel, a worm, a first belt wheel, a transmission rod, a second belt wheel, a first gear and a second gear, the worm is rotatably erected on the stirrer, the mixing stirring motor is connected with the worm to drive the worm to rotate, the worm wheel is sleeved on the first stirring shaft and meshed with the worm, the first belt wheel is sleeved on the first stirring shaft, the transmission rod is rotatably installed on the stirrer, the second belt wheel and the first gear are both installed on the transmission rod, the first belt wheel and the second belt wheel are connected through a transmission belt, and the second gear is installed on the second stirring shaft and meshed with the first gear.

Conveyor is including mixing connecting pipe, delivery pump, reaction connecting pipe and flow control valve, the one end connection of mixing the connecting pipe is established in the input of delivery pump and another termination and is established the bottom at the agitator, the one end connection of reaction connecting pipe is established at the output of delivery pump and another termination and is established the top at the reactor, flow control valve installs on mixing the connecting pipe.

The heating device is a resistance heater and is arranged in the middle of the reactor.

The bottom of the reactor is connected with a discharge pipe, and a discharge valve is installed on the discharge pipe.

Circulating device includes bottom connecting pipe, circulating pump, top connecting pipe, circulating valve, a termination of bottom connecting pipe is established on the discharging pipe and its other end meets with the feed end of circulating pump, a termination of top connecting pipe is established on the lateral wall at the top of reactor and another termination establishes the discharge end at the circulating pump, the circulating valve is installed on the connecting pipe of bottom.

And a reaction stirring motor is arranged at the top of the reactor, and an output shaft of the reaction stirring motor is connected with the third stirring shaft to drive the third stirring shaft to rotate.

The utility model has the advantages that: set up two mutual counter-rotating's (mixing) shafts at the agitator always, can the intensive mixing material for the material intensive mixing sets up circulating device in the reactor simultaneously, makes the deposit material of reactor bottom can be carried to the reactor top and stirs the reaction once more, improves the efficiency and the effect of reaction.

Drawings

FIG. 1 is a schematic view of the overall structure;

FIG. 2 is a schematic view of the agitator drive assembly;

fig. 3 is a schematic top sectional view of the overall structure.

Wherein, 1, a stirrer; 2. a reactor; 3. a feed inlet; 4. a first stirring shaft; 5. a second stirring shaft; 6. a mixing and stirring motor; 7. a third stirring shaft; 8. a heating device; 9. stirring blades; 10. a worm gear; 11. a worm; 12. a first pulley; 13. a second pulley; 14. a first gear; 15. a second gear; 16. a transmission belt; 17. a mixing connection pipe; 18. a delivery pump; 19. a reaction connecting pipe; 20. a flow control valve; 21. a discharge pipe; 22. a discharge valve; 23. a bottom connecting pipe; 24. a circulation pump; 25. a top connecting pipe; 26. a circulation valve; 27. a reaction stirring motor; 28. and a transmission rod.

Detailed Description

The utility model is described in detail with the accompanying drawings as follows:

as shown in fig. 1, fig. 2 and fig. 3, the utility model provides a continuous esterification reactor, which comprises a stirrer 1, a reactor 2 and a conveying device for connecting the stirrer 1 and the reactor 2, wherein a feed inlet 3 is arranged at the top of the stirrer 1, a heating device 8 and a third stirring shaft 7 are arranged in the reactor 2, a first stirring shaft 4 and a second stirring shaft 5 are arranged in the stirrer 1, stirring blades 9 are respectively connected to the first stirring shaft 4, the second stirring shaft 5 and the third stirring shaft 7, in the production process, after materials are added into the stirrer 1 through the feed inlet 3 and are stirred through the first stirring shaft 4 and the second stirring shaft 5, the mixed materials in the stirrer 1 are sent into the reactor 2 through the conveying device, the materials are heated by the heating device 8, and react under the continuous stirring of the third stirring shaft 7, preferably, the utility model discloses well heating device 8 chooses resistance heater for use and installs at the middle part of reactor 2, can stabilize the heating that lasts to material on every side, and third (mixing) shaft 7 is then installed two, and divide and locate heating device 8's both sides, two reaction agitator motor 27 are installed at the top of reactor 2 and meet with two third (mixing) shafts 7 respectively, start-up reaction agitator motor 27 and drive the rotation of third (mixing) shaft 7 and can stir the material, also be favorable to the material in the reactor 2 to be heated evenly simultaneously.

Specifically, in the present invention, a mixing and stirring motor 6 and a stirring transmission assembly are installed at the top of the stirrer 1, the mixing and stirring motor 6 can drive a first stirring shaft 4 and a second stirring shaft 5 to rotate in opposite directions through the stirring transmission assembly, so as to sufficiently mix and stir the materials entering into the stirrer 1, and the stirring transmission assembly comprises a worm wheel 10, a worm 11, a first pulley 12, a transmission rod 28, a second pulley 13, a first gear 14 and a second gear 15, wherein the worm 11 is rotatably erected on the stirrer 1, the mixing and stirring motor 6 is connected with the worm 11 to drive the worm 11 to rotate, the worm wheel 10 is sleeved on the first stirring shaft 4 and is meshed with the worm 11, the first pulley 12 is sleeved on the first stirring shaft 4, the transmission rod 28 is rotatably installed on the stirrer 1, the second pulley 13 and the first gear 14 are both installed on the transmission rod 28, the first belt wheel 12 is connected with the second belt wheel 13 through a transmission belt 16, and the second gear 15 is arranged on the second stirring shaft 5 and meshed with the first gear 14.

When the mixing and stirring motor 6 is started, the worm 11 can be driven to rotate, because the worm wheel 10 is meshed with the worm 11 and sleeved on the first stirring shaft 4, the worm 11 can drive the first stirring shaft 4 to rotate through the worm wheel 10, and the first belt wheel 14 on the first stirring shaft 4 is connected with the second belt wheel 15 on the transmission rod 28 through the transmission belt 16, so that the transmission rod 28 can be driven to synchronously rotate in the same direction through the transmission belt 16 while the first stirring shaft 4 rotates, and because the first gear 14 is sleeved on the transmission rod 18, the second gear 15 is sleeved on the second stirring shaft 5, and the first gear 14 is meshed with the second gear 15, the transmission rod 28 can drive the second stirring shaft 5 to rotate in the opposite direction while rotating, the first stirring shaft 4 and the second stirring shaft 5 rotate in opposite directions, so as to drive the materials in the stirrer 1 to be fully mixed by convection while being stirred, facilitating the subsequent full reaction.

Further, in some examples, the delivery apparatus includes a mixing connection tube 17, a delivery pump 18, a reaction connection tube 19, and a flow control valve 20, wherein one end of the mixing connection tube 177 is connected to the input end of the delivery pump 18 and the other end is connected to the bottom of the agitator 1, one end of the reaction connection tube 19 is connected to the output end of the delivery pump 18 and the other end is connected to the top of the reactor 2, and the flow control valve 20 is installed on the mixing connection tube 17.

Therefore, the delivery pump 18 can extract the material from the stirrer 1 through the mixing connection pipe 17 after being started and deliver the extracted material to the reactor 2 through the reaction connection pipe 19, and in the process, the flow regulating valve 20 can regulate the flow of the material in the mixing connection pipe 17 to continuously supply the material to the reactor 2.

Further, in some examples, a discharge pipe 21 is connected to the bottom of the reactor 2, and a discharge valve 22 is installed on the discharge pipe 21. The circulating device comprises a bottom connecting pipe 23, a circulating pump 24, a top connecting pipe 25 and a circulating valve 26, one end of the bottom connecting pipe 23 is connected with the discharging pipe 21, the other end of the bottom connecting pipe is connected with the feeding end of the circulating pump 24, one end of the top connecting pipe 25 is connected with the side wall of the top of the reactor 2, the other end of the top connecting pipe is connected with the discharging end of the circulating pump 24, and the circulating valve 26 is installed on the bottom connecting pipe 23.

After the material reaction in reactor 2 is accomplished, open bleeder valve 22, just can discharge from discharging pipe 21, and at the circulating device during operation, bleeder valve 22 is closed, and circulating valve 26 opens, start circulating pump 24, the material that will take out through bottom connecting pipe 23 from reactor 2's bottom extraction material rethread top connecting pipe 25 is carried into the reactor from reactor 2 top, and then can avoid the material of reactor 2 bottom to carry out the deposit, unable by the abundant heating, the reaction efficiency is low, the poor situation of reaction effect.

It should be emphasized that the embodiments described herein are illustrative and not restrictive, and thus the present invention includes but is not limited to the embodiments described in the detailed description, as well as other embodiments derived from the technical solutions of the present invention by those skilled in the art, which also belong to the scope of the present invention.

Claims

1. The utility model provides a continuity esterification reactor, includes agitator, reactor and the conveyor who connects agitator and reactor, the agitator top is provided with feed inlet, its characterized in that: the stirrer is internally provided with a first stirring shaft and a second stirring shaft, the top of the stirrer is provided with a mixing stirring motor and a stirring transmission assembly, and the mixing stirring motor can drive the first stirring shaft and the second stirring shaft to rotate reversely through the stirring transmission assembly;

2. A continuous esterification reactor as claimed in claim 1, wherein: the first stirring shaft, the second stirring shaft and the third stirring shaft are respectively provided with two stirring blades, and the third stirring shaft is respectively arranged at two sides of the heating device.

3. A continuous esterification reactor as claimed in claim 2, wherein: the stirring transmission assembly comprises a worm wheel, a worm, a first belt wheel, a transmission rod, a second belt wheel, a first gear and a second gear, the worm is rotatably erected on the stirrer, the mixing stirring motor is connected with the worm to drive the worm to rotate, the worm wheel is sleeved on the first stirring shaft and meshed with the worm, the first belt wheel is sleeved on the first stirring shaft, the transmission rod is rotatably installed on the stirrer, the second belt wheel and the first gear are both installed on the transmission rod, the first belt wheel and the second belt wheel are connected through a transmission belt, and the second gear is installed on the second stirring shaft and meshed with the first gear.

4. A continuous esterification reactor as claimed in claim 1, wherein: conveyor is including mixing connecting pipe, delivery pump, reaction connecting pipe and flow control valve, the one end connection of mixing the connecting pipe is established in the input of delivery pump and another termination and is established the bottom at the agitator, the one end connection of reaction connecting pipe is established at the output of delivery pump and another termination and is established the top at the reactor, flow control valve installs on mixing the connecting pipe.

5. A continuous esterification reactor as claimed in claim 1, wherein: the heating device is a resistance heater and is arranged in the middle of the reactor.

6. A continuous esterification reactor as claimed in claim 1, wherein: the bottom of the reactor is connected with a discharge pipe, and a discharge valve is installed on the discharge pipe.

7. A continuous esterification reactor as claimed in claim 6, wherein: circulating device includes bottom connecting pipe, circulating pump, top connecting pipe, circulating valve, one termination of bottom connecting pipe is established on the discharging pipe and its other end meets with the feed end of circulating pump, one termination of top connecting pipe is established on the lateral wall at the top of reactor and another termination is established at the discharge end of circulating pump, the circulating valve is installed on the bottom connecting pipe.

8. A continuous esterification reactor as claimed in claim 1, wherein: the top of the reactor is provided with a reaction stirring motor, and an output shaft of the reaction stirring motor is connected with a third stirring shaft to drive the third stirring shaft to rotate.