CN213643982U - Device for producing p-methylsulfonylbenzaldehyde - Google Patents
Device for producing p-methylsulfonylbenzaldehyde Download PDFInfo
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- CN213643982U CN213643982U CN202022254889.XU CN202022254889U CN213643982U CN 213643982 U CN213643982 U CN 213643982U CN 202022254889 U CN202022254889 U CN 202022254889U CN 213643982 U CN213643982 U CN 213643982U
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Abstract
The utility model discloses a device for producing p-methylsulfonyl benzaldehyde, which comprises a bromination kettle; the hydrolysis kettle, the first centrifugal machine, the alkaline washing kettle, the second centrifugal machine, the drying machine and the product collecting tank are sequentially communicated with the bromination kettle; the gas outlet of the bromination kettle is communicated with a hydrogen bromide absorption kettle; an absorption liquid outlet of the hydrogen bromide absorption kettle and a centrifugate outlet of the first centrifugal machine are both communicated with an acid liquid inlet of the hydrolysis kettle; a plurality of elastic porous baffles which incline downwards are arranged on the inner wall of the hydrogen bromide absorption kettle; a first stirring device is arranged in the alkaline washing kettle, a flow disturbing mechanism is arranged on the first stirring device, and the flow disturbing mechanism comprises an annular supporting frame sleeved outside the stirring shaft and a plurality of stirring plates, wherein two ends of each stirring plate are respectively connected with the annular supporting frame and the stirring shaft; a plurality of auxiliary stirring rods are arranged on the stirring plate and the annular supporting frame. The device reuses centrifuged centrifugate and hydrogen bromide generated in the reaction process, thereby saving energy; and the device has high alkaline cleaning efficiency.
Description
Technical Field
The utility model relates to a chemical industry equipment field, concretely relates to a device for producing to methylsulfonyl benzaldehyde.
Background
The p-methylsulfonylbenzaldehyde is a light yellow or light brown crystalline powder, and the substance is mainly used as an intermediate of a medical intermediate thiamphenicol, commonly called sulfuryl aldehyde. The p-methylsulfonylbenzaldehyde is a compound generated by directly connecting aldehyde group and methylsulfonyl with phenyl, has the fragrance similar to bitter apricot kernel, and is an indispensable important raw material in chemical industry as a dye and a spice.
The p-methylsulfonylbenzaldehyde mainly takes p-methylsulfonyltoluene and bromine as raw materials, and a target product is prepared by sequentially carrying out bromination, hydrolysis, alkali washing, centrifugation and drying. Wherein, the hydrolysis needs to be carried out under the acidic condition, a large amount of waste water and waste acid are often generated after the hydrolysis is finished, and the waste water and the waste acid are not reused, so that the preparation cost of the product is increased, and the pollution discharge burden of enterprises is increased. In addition, in the subsequent alkali washing process, alkali liquor and solid are not fully mixed, so that the alkali washing efficiency is low, and the quality and the yield of products are influenced.
Disclosure of Invention
The utility model discloses the technical problem that will solve is: aiming at the defects in the prior art, the device for producing the p-methylsulfonylbenzaldehyde is provided, and the centrifuged centrifugate and hydrogen bromide generated in the reaction process are recycled, so that the energy is saved; and the device has high alkaline washing efficiency, and the prepared target product has good quality.
In order to solve the technical problem, the technical scheme of the utility model is that:
an apparatus for producing p-methylsulfonylbenzaldehyde, comprising a bromination kettle; a hydrolysis kettle, a first centrifuge, an alkaline washing kettle, a second centrifuge, a dryer and a product collecting tank which are sequentially communicated with the bromination kettle; the gas outlet of the bromination kettle is communicated with a hydrogen bromide absorption kettle; an absorption liquid outlet of the hydrogen bromide absorption kettle and a centrifugate outlet of the first centrifugal machine are both communicated with an acid liquid inlet of the hydrolysis kettle;
a plurality of elastic porous baffles which incline downwards are arranged on the inner wall of the hydrogen bromide absorption kettle; a first stirring device is arranged in the alkaline washing kettle, and comprises a driving motor arranged at the top of the alkaline washing kettle, a stirring shaft arranged in the alkaline washing kettle and electrically connected with the driving motor, and a plurality of flap type stirring blades, a turbulence mechanism and an anchor type stirring rod which are arranged on the stirring shaft from top to bottom; the turbulence mechanism comprises an annular support frame sleeved outside the stirring shaft and a plurality of stirring plates, and two ends of each stirring plate are connected with the annular support frame and the stirring shaft respectively; the stirring plate and the annular support frame are both provided with a plurality of auxiliary stirring rods.
Preferably, the bromination kettle comprises a bromination kettle body; a jacket is arranged on the outer side of the bromination kettle body, and a condensing coil is arranged in the jacket; a second stirring device and an electric heating sheet are arranged in the bromination kettle body; and a thermometer and a pressure gauge are arranged at the top of the bromination kettle.
Preferably, the bromination kettle is communicated with a vacuum unit.
Preferably, the hydrogen bromide absorption kettle comprises a hydrogen bromide absorption kettle body; a jacket is arranged on the outer side of the hydrogen bromide absorption kettle body; a condensing coil is arranged in the jacket; the top of the hydrogen bromide absorption kettle body is provided with a spray pipe and a plurality of spray headers communicated with the spray pipe.
Preferably, a third stirring device and an electric heating plate are arranged in the hydrolysis kettle.
Since the technical scheme is used, the beneficial effects of the utility model are that:
the utility model provides a device for producing p-methylsulfonyl benzaldehyde, which comprises a bromination kettle; the hydrolysis kettle, the first centrifugal machine, the alkaline washing kettle, the second centrifugal machine, the drying machine and the product collecting tank are sequentially communicated with the bromination kettle; the gas outlet of the bromination kettle is communicated with a hydrogen bromide absorption kettle; an absorption liquid outlet of the hydrogen bromide absorption kettle and a centrifugate outlet of the first centrifugal machine are both communicated with an acid liquid inlet of the hydrolysis kettle; after the reaction of bromine and p-methylsulfonyl toluene in the bromination kettle is finished, evacuating hydrogen bromide in the bromination kettle, allowing hydrogen bromide gas to enter a hydrogen bromide absorption kettle, condensing and absorbing by water to obtain a hydrogen bromide water solution; the aqueous hydrogen bromide solution enters the hydrolysis kettle to provide an acidic environment for hydrolysis. The centrifugate obtained after the feed liquid after hydrolysis is centrifuged can also enter the hydrolysis kettle again for recycling. A plurality of elastic porous baffles which incline downwards are arranged on the inner wall of the hydrogen bromide absorption kettle; on one hand, the rising speed of the hydrogen bromide gas can be slowed down, so that the hydrogen bromide gas is fully contacted with the spray liquid and absorbed; on the other hand, when the spraying liquid falls, the spraying liquid is shunted when meeting the elastic porous baffle, so that the contact area of the hydrogen bromide gas and the spraying liquid is increased, and the absorption efficiency is further improved; a stirring shaft is arranged in the alkaline washing kettle, and a plurality of folding blade type stirring blades, a turbulence mechanism and an anchor type stirring rod are arranged on the stirring shaft from top to bottom; the turbulence mechanism comprises an annular support frame sleeved outside the stirring shaft and a plurality of stirring plates, and the two ends of each stirring plate are respectively connected with the annular support frame and the stirring shaft; a plurality of auxiliary stirring rods are arranged on the stirring plate and the annular supporting frame. The arrangement of the stirring mechanism enables the crude product in the alkaline washing kettle to be fully stirred and mixed with the alkaline liquor, the alkaline washing efficiency is greatly improved, and the purity of the product is improved.
The utility model provides a device for producing methyl sulfone benzaldehyde, the top of a bromination kettle is provided with a thermometer and a pressure gauge; the pressure and the temperature in the bromination kettle can be monitored in real time; the bromination kettle is communicated with a vacuum unit to regulate and control the pressure in the bromination kettle.
Drawings
The present invention will be further explained with reference to the drawings and examples.
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an alkaline washing kettle according to an embodiment of the present invention;
in the figure, 1, a bromination kettle; 2. a hydrolysis kettle; 3. a first centrifuge; 4. an alkaline washing kettle; 5. a second centrifuge; 6. a dryer; 7. a product collection tank; 8. a hydrogen bromide absorption kettle; 9. a condenser coil; 10. an electrical heating sheet; 11. a thermometer; 12. a pressure gauge; 13. a vacuum unit; 14. a shower pipe; 15. a shower head; 16. a resilient porous baffle; 17. a drive motor; 18. a stirring shaft; 19. a flap-type stirring blade; 20. an anchor type stirring rod; 21. an annular support frame; 22. a stirring plate; 23. an auxiliary stirring rod.
Detailed Description
The invention is further explained below with reference to the drawings and examples. It should be understood that these examples are for illustrative purposes only and are not intended to limit the scope of the present invention.
Examples
As shown in fig. 1, 2, an apparatus for producing p-methylsulfonylbenzaldehyde includes a bromination pot 1; a hydrolysis kettle 2, a first centrifuge 3, an alkaline washing kettle 4, a second centrifuge 5, a dryer 6 and a product collecting tank 7 which are sequentially communicated with the bromination kettle 1; the gas outlet of the bromination kettle 1 is communicated with a hydrogen bromide absorption kettle 8; an absorption liquid outlet of the hydrogen bromide absorption kettle 8 and a centrifugate outlet of the first centrifuge 3 are both communicated with an acid liquid inlet of the hydrolysis kettle 2; after the reaction of bromine and p-methylsulfonyl toluene in the bromination kettle is finished, evacuating hydrogen bromide in the bromination kettle, allowing hydrogen bromide gas to enter a hydrogen bromide absorption kettle, condensing and absorbing by water to obtain a hydrogen bromide water solution; the aqueous hydrogen bromide solution enters the hydrolysis kettle to provide an acidic environment for hydrolysis. The centrifugate obtained after the feed liquid after hydrolysis is centrifuged can also enter the hydrolysis kettle again for recycling.
In this embodiment, the bromination kettle 1 comprises a bromination kettle body; a jacket is arranged on the outer side of the bromination kettle body, and a condensing coil pipe 9 is arranged in the jacket; a second stirring device and an electric heating plate 10 are arranged in the bromination kettle body; the top of the bromination kettle 1 is provided with a thermometer 11 and a pressure gauge 12. The bromination kettle 1 is communicated with a vacuum unit 13.
In this embodiment, the hydrogen bromide absorption kettle 8 includes a hydrogen bromide absorption kettle body; a jacket is arranged on the outer side of the hydrogen bromide absorption kettle body; a condensing coil pipe 9 is arranged in the jacket; the top of the hydrogen bromide absorption kettle body is provided with a spray pipe 14 and a plurality of spray headers 15 communicated with the spray pipe 14. A plurality of elastic porous baffles 16 which incline downwards are arranged on the inner wall of the hydrogen bromide absorption kettle body. The spray liquid is sprayed out by a spray pipe and a spray head to contact and absorb the hydrogen bromide gas coming from the bottom of the hydrogen bromide absorption kettle; the downward-inclined elastic porous baffle can slow down the rising speed of the hydrogen bromide gas, so that the hydrogen bromide gas is fully contacted with and absorbed by the spray liquid; on the other hand, when the spraying liquid falls, the spraying liquid is shunted when encountering the elastic porous baffle, so that the contact area between the hydrogen bromide gas and the spraying liquid is increased, and the absorption efficiency is further improved.
In this embodiment, a first stirring device is arranged in the alkaline washing kettle 4, and the first stirring device includes a driving motor 17 arranged at the top of the alkaline washing kettle 4, a stirring shaft 18 arranged in the alkaline washing kettle 4 and electrically connected to the driving motor 17, and a plurality of flap-type stirring blades 19, a turbulence mechanism, and an anchor-type stirring rod 20 arranged on the stirring shaft 18 from top to bottom; the turbulence mechanism comprises an annular support frame 21 sleeved outside the stirring shaft 18 and a plurality of stirring plates 22, two ends of each stirring plate are respectively connected with the annular support frame 21 and the stirring shaft 18; and a plurality of auxiliary stirring rods 23 are arranged on the stirring plate 22 and the annular supporting frame 21. The arrangement of the stirring mechanism enables the crude product in the alkaline washing kettle to be fully stirred and mixed with the alkaline liquor, the alkaline washing efficiency is greatly improved, and the purity of the product is improved.
And a third stirring device and an electric heating plate 10 are arranged in the hydrolysis kettle 2.
Furthermore, it should be understood that various changes and modifications of the present invention may be made by those skilled in the art after reading the teachings of the present invention, and these equivalents also fall within the scope of the appended claims.
Claims (5)
1. An apparatus for producing p-methylsulfonylbenzaldehyde, characterized in that: comprises a bromination kettle; a hydrolysis kettle, a first centrifuge, an alkaline washing kettle, a second centrifuge, a dryer and a product collecting tank which are sequentially communicated with the bromination kettle; the gas outlet of the bromination kettle is communicated with a hydrogen bromide absorption kettle; an absorption liquid outlet of the hydrogen bromide absorption kettle and a centrifugate outlet of the first centrifugal machine are both communicated with an acid liquid inlet of the hydrolysis kettle;
a plurality of elastic porous baffles which incline downwards are arranged on the inner wall of the hydrogen bromide absorption kettle; a first stirring device is arranged in the alkaline washing kettle, and comprises a driving motor arranged at the top of the alkaline washing kettle, a stirring shaft arranged in the alkaline washing kettle and electrically connected with the driving motor, and a plurality of flap type stirring blades, a turbulence mechanism and an anchor type stirring rod which are arranged on the stirring shaft from top to bottom; the turbulence mechanism comprises an annular support frame sleeved outside the stirring shaft and a plurality of stirring plates, and two ends of each stirring plate are connected with the annular support frame and the stirring shaft respectively; the stirring plate and the annular support frame are both provided with a plurality of auxiliary stirring rods.
2. The apparatus for producing p-methylsulfonylbenzaldehyde according to claim 1, wherein: the bromination kettle comprises a bromination kettle body; a jacket is arranged on the outer side of the bromination kettle body, and a condensing coil is arranged in the jacket; a second stirring device and an electric heating sheet are arranged in the bromination kettle body; and a thermometer and a pressure gauge are arranged at the top of the bromination kettle.
3. The apparatus for producing p-methylsulfonylbenzaldehyde according to claim 1, wherein: the bromination kettle is communicated with a vacuum unit.
4. The apparatus for producing p-methylsulfonylbenzaldehyde according to claim 1, wherein: the hydrogen bromide absorption kettle comprises a hydrogen bromide absorption kettle body; a jacket is arranged on the outer side of the hydrogen bromide absorption kettle body; a condensing coil is arranged in the jacket; the top of the hydrogen bromide absorption kettle body is provided with a spray pipe and a plurality of spray headers communicated with the spray pipe.
5. The apparatus for producing p-methylsulfonylbenzaldehyde according to claim 1, wherein: and a third stirring device and an electric heating plate are arranged in the hydrolysis kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022254889.XU CN213643982U (en) | 2020-10-12 | 2020-10-12 | Device for producing p-methylsulfonylbenzaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022254889.XU CN213643982U (en) | 2020-10-12 | 2020-10-12 | Device for producing p-methylsulfonylbenzaldehyde |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213643982U true CN213643982U (en) | 2021-07-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022254889.XU Active CN213643982U (en) | 2020-10-12 | 2020-10-12 | Device for producing p-methylsulfonylbenzaldehyde |
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| Country | Link |
|---|---|
| CN (1) | CN213643982U (en) |
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2020
- 2020-10-12 CN CN202022254889.XU patent/CN213643982U/en active Active
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