CN220277001U - Device for neutralization reaction of dimethyl sulfoxide crude product - Google Patents
Device for neutralization reaction of dimethyl sulfoxide crude product Download PDFInfo
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- CN220277001U CN220277001U CN202321768171.XU CN202321768171U CN220277001U CN 220277001 U CN220277001 U CN 220277001U CN 202321768171 U CN202321768171 U CN 202321768171U CN 220277001 U CN220277001 U CN 220277001U
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- Prior art keywords
- tower
- neutralization
- pipeline
- dimethyl sulfoxide
- crude
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- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000006386 neutralization reaction Methods 0.000 title claims abstract description 52
- 239000012043 crude product Substances 0.000 title description 6
- 239000007788 liquid Substances 0.000 claims abstract description 43
- 239000007789 gas Substances 0.000 claims abstract description 34
- 239000003513 alkali Substances 0.000 claims abstract description 31
- 150000003462 sulfoxides Chemical class 0.000 claims abstract description 18
- 239000000463 material Substances 0.000 claims description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 15
- 229910052757 nitrogen Inorganic materials 0.000 claims description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000003472 neutralizing effect Effects 0.000 claims description 3
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 abstract description 14
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 abstract description 14
- 235000017166 Bambusa arundinacea Nutrition 0.000 abstract description 10
- 235000017491 Bambusa tulda Nutrition 0.000 abstract description 10
- 241001330002 Bambuseae Species 0.000 abstract description 10
- 235000015334 Phyllostachys viridis Nutrition 0.000 abstract description 10
- 239000011425 bamboo Substances 0.000 abstract description 10
- 238000012423 maintenance Methods 0.000 abstract description 2
- 239000012535 impurity Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 238000011143 downstream manufacturing Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000012071 phase Substances 0.000 description 1
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model provides a device for dimethyl sulfoxide crude neutralization reaction, including the stripping tower, the neutralization tower, the stripping tower is the plate column, the lateral wall top sets up the feed inlet, the lateral wall bottom sets up the air inlet, the top of the stripping tower links to each other with tail gas treatment system, the neutralization tower includes the tower body, and set up the column plate in the tower body along the direction of height interval, the middle part of each column plate sets up the exhaust mouth, all be provided with overflow section of thick bamboo on each column plate, and overflow section of thick bamboo has the height, overflow section of thick bamboo on two adjacent column plates is dislocation arrangement and distributes, the lateral wall top of neutralization tower sets up the inlet, liquid alkali mouth, and the inlet links to each other with the bin outlet of stripping tower through first pipeline, set up first delivery pump on the first pipeline, liquid alkali mouth is used for linking to each other with liquid alkali source, the liquid outlet of neutralization tower is used for with sulfoxide jar feed through the second pipeline, set up the second delivery pump on this second pipeline. The utility model has simple structure and convenient maintenance, can effectively remove nitrogen dioxide in the crude dimethyl sulfoxide, and ensures the long-time normal operation of the device.
Description
Technical Field
The utility model relates to the field of chemical industry, in particular to a device for neutralization reaction of a dimethyl sulfoxide crude product.
Background
In the process of producing dimethyl sulfoxide in chemical enterprises, impurity nitrogen dioxide contained in the generated crude dimethyl sulfoxide needs to be removed. At present, a plate tower is usually utilized, crude dimethyl sulfoxide and liquid alkali are simultaneously added at the top, and the purpose of removing nitrogen dioxide is achieved by utilizing liquid alkali neutralization.
However, because the crude dimethyl sulfoxide and liquid alkali are insufficiently mixed, the intermittent pH fluctuation of tower bottom liquid of the plate tower is caused, so that the material pump is frequently washed by strong acid and strong alkali, the failure rate is high, and the impurity removal effect is poor. In addition, the material residue is obvious in the equipment overhaul process, and potential safety hazards exist.
Therefore, how to efficiently remove nitrogen dioxide in crude dimethyl sulfoxide is a problem to be solved by the person skilled in the art.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model provides a device for neutralization reaction of a dimethyl sulfoxide crude product, which has the advantages of simple structure and convenient maintenance, can effectively remove nitrogen dioxide in the crude dimethyl sulfoxide, and ensures long-time normal operation of the device.
The technical scheme of the utility model is as follows: the utility model provides a device for dimethyl sulfoxide crude neutralization reaction, includes the stripping tower, neutralization tower, the stripping tower is the plate column, and the lateral wall top of stripping tower sets up the feed inlet for link to each other with crude dimethyl sulfoxide source, and the lateral wall bottom of stripping tower sets up the air inlet for link to each other with the nitrogen gas source, the top of stripping tower links to each other with tail gas treatment system, the neutralization tower includes the tower body to and set up the column plate in the tower body along the direction of height interval, the middle part of each column plate sets up the drain, all is provided with overflow section of thick bamboo on each column plate, and overflow section of thick bamboo has the height, and overflow section of thick bamboo on two adjacent column plates is dislocation arrangement and distributes, the lateral wall top of neutralization tower sets up feed inlet, liquid alkali mouth, and the feed inlet links to each other with the drain of stripping tower through first pipeline, sets up first delivery pump on the first pipeline, and the liquid alkali mouth is used for supplying with the sulfoxide jar through the second pipeline, sets up the second delivery pump on this second pipeline.
The top of the neutralizing tower is connected with the tail gas treatment system through negative pressure.
The second pipeline is provided with a first valve, is positioned at the downstream of the second material conveying pump, and further comprises a return pipe, wherein the upstream end of the return pipe is connected with the second pipeline, is positioned between the second material conveying pump and the first valve, the downstream end of the return pipe is connected with the top of the neutralization tower, and the return pipe is provided with a second valve.
The diameter of the tower plate is 600mm, the aperture of the exhaust port is 6mm, and the diameter of the overflow cylinder is 150mm.
The technical scheme has the following beneficial effects:
1. the device for the neutralization reaction of the dimethyl sulfoxide crude product comprises a stripping tower and a neutralization tower, wherein the stripping tower is used for removing part of nitrogen dioxide in the crude sulfoxide by introducing nitrogen into the crude sulfoxide, the treatment load of the neutralization tower is reduced, and the neutralization tower is used for carrying out neutralization reaction with the residual nitrogen dioxide in the crude sulfoxide by adding liquid alkali so as to remove the residual nitrogen dioxide in the crude sulfoxide. The gas stripping tower is a plate tower, a feed inlet is arranged at the top of the side wall of the gas stripping tower and is used for being connected with a crude dimethyl sulfoxide source, an air inlet is arranged at the bottom of the side wall of the gas stripping tower and is used for being connected with a nitrogen source, the top of the gas stripping tower is connected with a tail gas treatment system, crude sulfoxide enters downward step flow from the top of the gas stripping tower, is in countercurrent contact with nitrogen discharged from the bottom, and part of nitrogen dioxide in the crude sulfoxide is replaced and enters the tail gas treatment system for centralized treatment. The neutralization tower comprises a tower body and tower plates arranged in the tower body at intervals along the height direction, exhaust ports are formed in the middle of each tower plate, overflow cylinders are arranged on each tower plate and have heights, the overflow cylinders on two adjacent tower plates are distributed in a staggered arrangement, a liquid inlet and a liquid alkali port are formed in the top of the side wall of the neutralization tower and are connected with the exhaust ports of the gas stripping tower through a first pipeline, a first material conveying pump is arranged on the first pipeline, the liquid alkali port is used for being connected with a liquid alkali source, crude sulfoxide subjected to pretreatment (for removing part of nitrogen dioxide) enters the top of the neutralization tower, after being mixed with liquid alkali, the liquid level is gradually increased, finally overflows to the tower plates on the lower layer through the overflow cylinders, the residence time of the crude sulfoxide and the liquid alkali on each layer of tower plates is ensured to be sufficiently long, and the material is fully mixed, and the neutralization reaction is ensured to be fully carried out. And the residual crude sulfoxide and liquid alkali can flow to the bottom of the tower body through the exhaust ports arranged on each layer of tower plates, so that the residual liquid phase of the tower plates is avoided, and the potential safety hazard is avoided. The liquid outlet of the neutralization tower is used for feeding with the sulfoxide tank through a second pipeline, a second material conveying pump is arranged on the second pipeline, the pH value of the mixture of the crude sulfoxide and the liquid alkali which are subjected to full neutralization reaction is kept stable, and the mixture is sent to the sulfoxide tank through the second pipeline to be subjected to downstream process treatment (such as layering), so that the pH value of the working environment of the second material conveying pump is stable, and long-time normal work is ensured.
2. The top of the neutralization tower is connected with a tail gas treatment system through negative pressure, and gas phases (nitrogen dioxide and nitrogen) in the crude sulfoxide are further removed through negative pressure, so that the quality of the dimethyl sulfoxide is improved.
3. The first valve is arranged on the second pipeline and positioned at the downstream of the second material conveying pump, the second pipeline further comprises a return pipe, the upstream end of the return pipe is connected with the second pipeline and positioned between the second material conveying pump and the first valve, the downstream end of the return pipe is connected with the top of the neutralization tower, the second valve is arranged on the return pipe, and when the quality of crude dimethyl sulfoxide subjected to neutralization reaction impurity removal is unqualified, the return pipe can return to the neutralization tower for further treatment, so that the actual requirements of enterprises are met.
Further description is provided below with reference to the drawings and detailed description.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the drawing, 1 is a stripping tower, 2 is a neutralizing tower, 3 is a feed inlet, 4 is an air inlet, 5 is a tail gas treatment system, 6 is a tower body, 7 is a tower plate, 8 is a drain port, 9 is an overflow cylinder, 10 is a liquid inlet, 11 is a liquid alkali port, 12 is a first pipeline, 13 is a first feed pump, 14 is a second pipeline, 15 is a second feed pump, 16 is a first valve, 17 is a return pipe, and 18 is a second valve.
Detailed Description
Referring to FIG. 1, an embodiment of an apparatus for neutralization of crude dimethyl sulfoxide is shown. The device for the neutralization reaction of the dimethyl sulfoxide crude product comprises a stripping tower 1 and a neutralization tower 2. The gas stripping tower 1 is a plate type tower, a feed inlet 3 is formed in the top of the side wall of the gas stripping tower and used for being connected with a crude dimethyl sulfoxide source, a gas inlet 4 is formed in the bottom of the side wall of the gas stripping tower and used for being connected with a nitrogen source, and the top of the gas stripping tower is connected with a tail gas treatment system 5. The neutralization tower 2 comprises a tower body 6 and tower plates 7 arranged in the tower body at intervals along the height direction, in the embodiment, the height of the tower body is 3000mm, the diameter of the tower plates 7 is 600mm, the number of the arranged tower plates is seven, and the tower top of the neutralization tower 2 is connected with the tail gas treatment system 5 through negative pressure. The middle part of each column plate sets up and arranges full mouth 8, all is provided with overflow section of thick bamboo 9 on each column plate, and overflow section of thick bamboo 9 has the height, and overflow section of thick bamboo on two adjacent column plates is the dislocation arrangement and distributes, and specifically, arranges full mouth 8's aperture and is 6mm, and overflow section of thick bamboo 9's tube footpath is 150mm. The top of the side wall of the neutralization tower 2 is provided with a liquid inlet 10 and a liquid alkali inlet 11, obviously, the liquid inlet and the liquid alkali inlet are all positioned above a tower plate at the top, the liquid inlet 10 is connected with a discharge port of the gas stripping tower through a first pipeline 12, the first pipeline 12 is provided with a first material conveying pump 13, and the liquid alkali inlet 11 is used for being connected with a liquid alkali source. The liquid outlet of the neutralization tower is used for feeding with the sulfoxide tank through a second pipeline 14, a second material conveying pump 15 is arranged on the second pipeline 14, in this embodiment, a first valve 16 is arranged on the second pipeline 14 and positioned at the downstream of the second material conveying pump 15, and the neutralization tower further comprises a return pipe 17, the upstream end of the return pipe is connected with the second pipeline 14 and positioned between the second material conveying pump and the first valve, the downstream end of the return pipe is connected with the top of the neutralization tower, and a second valve 18 is arranged on the return pipe.
The working principle of the utility model is as follows: the crude dimethyl sulfoxide containing nitrogen dioxide enters the gas stripping tower from the top, and flows downwards along each tower plate in a stepwise manner under the action of gravity, meanwhile, nitrogen enters the gas stripping tower from the bottom through the gas inlet, contacts with the crude dimethyl sulfoxide in a countercurrent manner, replaces part of the nitrogen dioxide, and enters the tail gas treatment system for treatment. The crude dimethyl sulfoxide with the nitrogen dioxide removed preliminarily enters the neutralization tower continuously from the top, and liquid alkali is added continuously from the top of the neutralization tower. When the liquid level rises to the height of the overflow cylinder, the mixed liquid overflows to the lower layer of tower plate through the overflow cylinder and enters the tower bottom of the tower body, in the flowing process, the crude dimethyl sulfoxide and the liquid alkali are mixed for a long time and fully mixed, the thorough neutralization reaction can be effectively ensured, and finally, the crude dimethyl sulfoxide after the neutralization reaction and excessive liquid alkali enter a sulfoxide tank, and the liquid alkali in the crude dimethyl sulfoxide and the excessive liquid alkali are separated after layering. Because each column plate is provided with a drain, the residue of crude dimethyl sulfoxide and liquid alkali on the column plate is avoided.
Claims (4)
1. A device for dimethyl sulfoxide crude neutralization reaction, characterized in that: comprises a gas stripping tower (1) and a neutralization tower (2), wherein the gas stripping tower (1) is a plate type tower, a feed inlet (3) is arranged at the top of the side wall of the gas stripping tower and is used for being connected with a crude dimethyl sulfoxide source, a gas inlet (4) is arranged at the bottom of the side wall of the gas stripping tower and is used for being connected with a nitrogen source, the top of the gas stripping tower is connected with a tail gas treatment system (5),
the neutralization tower (2) comprises a tower body (6) and tower plates (7) which are arranged in the tower body at intervals along the height direction, the middle part of each tower plate is provided with a drain port (8), each tower plate is provided with an overflow cylinder (9), the overflow cylinders (9) have heights, the overflow cylinders on two adjacent tower plates are distributed in a staggered arrangement,
the side wall top of neutralization tower (2) sets up feed liquor mouth (10), liquid alkali mouth (11), and feed liquor mouth (10) link to each other with the bin outlet of stripping tower through first pipeline (12), set up first delivery pump (13) on first pipeline (12), liquid alkali mouth (11) are used for linking to each other with the liquid alkali source, and the liquid outlet of neutralization tower is used for with sulfoxide tank feed through second pipeline (14), sets up second delivery pump (15) on this second pipeline (14).
2. The apparatus for neutralization reaction of crude dimethyl sulfoxide as set forth in claim 1, wherein: the top of the neutralization tower (2) is connected with the tail gas treatment system (5) through negative pressure.
3. The apparatus for neutralization reaction of crude dimethyl sulfoxide as set forth in claim 1, wherein: the second pipeline (14) is provided with a first valve (16) and is positioned at the downstream of the second material conveying pump (15), the second pipeline further comprises a return pipe (17), the upstream end of the return pipe is connected with the second pipeline (14), the return pipe is positioned between the second material conveying pump and the first valve, the downstream end of the return pipe is connected with the top of the neutralizing tower, and the return pipe is provided with a second valve (18).
4. The apparatus for neutralization reaction of crude dimethyl sulfoxide as set forth in claim 1, wherein: the diameter of the tower plate (7) is 600mm, the aperture of the exhaust port (8) is 6mm, and the cylinder diameter of the overflow cylinder (9) is 150mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321768171.XU CN220277001U (en) | 2023-07-05 | 2023-07-05 | Device for neutralization reaction of dimethyl sulfoxide crude product |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321768171.XU CN220277001U (en) | 2023-07-05 | 2023-07-05 | Device for neutralization reaction of dimethyl sulfoxide crude product |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220277001U true CN220277001U (en) | 2024-01-02 |
Family
ID=89336980
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321768171.XU Active CN220277001U (en) | 2023-07-05 | 2023-07-05 | Device for neutralization reaction of dimethyl sulfoxide crude product |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220277001U (en) |
-
2023
- 2023-07-05 CN CN202321768171.XU patent/CN220277001U/en active Active
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