CN204182376U - Produce dimethyl sulfoxide (DMSO) sulfide oxidation tower - Google Patents
Produce dimethyl sulfoxide (DMSO) sulfide oxidation tower Download PDFInfo
- Publication number
- CN204182376U CN204182376U CN201420611345.6U CN201420611345U CN204182376U CN 204182376 U CN204182376 U CN 204182376U CN 201420611345 U CN201420611345 U CN 201420611345U CN 204182376 U CN204182376 U CN 204182376U
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- zone
- tower
- cold
- dmso
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- IAZDPXIOMUYVGZ-UHFFFAOYSA-N Dimethylsulphoxide Chemical compound CS(C)=O IAZDPXIOMUYVGZ-UHFFFAOYSA-N 0.000 title claims abstract description 60
- 238000007254 oxidation reaction Methods 0.000 title claims abstract description 19
- UCKMPCXJQFINFW-UHFFFAOYSA-N Sulphide Chemical compound [S-2] UCKMPCXJQFINFW-UHFFFAOYSA-N 0.000 title claims abstract description 16
- 230000003647 oxidation Effects 0.000 title claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 42
- 150000003568 thioethers Chemical class 0.000 claims abstract description 32
- 239000007788 liquid Substances 0.000 claims abstract description 25
- 238000010438 heat treatment Methods 0.000 claims abstract description 21
- 238000001816 cooling Methods 0.000 claims abstract description 19
- 150000003462 sulfoxides Chemical class 0.000 claims abstract description 19
- 239000000498 cooling water Substances 0.000 claims abstract description 15
- 230000008676 import Effects 0.000 claims abstract description 6
- 238000012856 packing Methods 0.000 claims description 15
- 238000004519 manufacturing process Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 5
- MWUXSHHQAYIFBG-UHFFFAOYSA-N Nitric oxide Chemical compound O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 abstract description 32
- 230000001590 oxidative effect Effects 0.000 abstract description 11
- 238000010574 gas phase reaction Methods 0.000 abstract description 6
- 239000007789 gas Substances 0.000 description 40
- 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 description 7
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 7
- 230000000694 effects Effects 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 239000008246 gaseous mixture Substances 0.000 description 4
- QGJOPFRUJISHPQ-UHFFFAOYSA-N Carbon disulfide Chemical compound S=C=S QGJOPFRUJISHPQ-UHFFFAOYSA-N 0.000 description 3
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- QMMFVYPAHWMCMS-UHFFFAOYSA-N Dimethyl sulfide Chemical compound CSC QMMFVYPAHWMCMS-UHFFFAOYSA-N 0.000 description 2
- 230000005587 bubbling Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000000945 filler Substances 0.000 description 2
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 239000012452 mother liquor Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000002194 synthesizing effect Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 239000011800 void material Substances 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model discloses and a kind of produce dimethyl sulfoxide (DMSO) sulfide oxidation tower, solve the problem that in tower that existing oxidizing tower exists, in liquid level instability, poor stability, tail gas, content of nitric oxide is high, control difficulty is high.Technical scheme comprises tower body, described tower body is divided into heating region, reaction zone, sub-cold-zone and cooling zone from the bottom to top, cooling water jecket on cooling water coil and tower wall is equipped with in described reaction zone, sub-cold-zone and cooling zone, described heating region is provided with oxic gas import, reaction zone is provided with thioether feed points, cooling zone epimere is provided with offgas outlet, the position that described sub-cold-zone is positioned at below liquid level is provided with sulfoxide outlet, and described sub-cold-zone epimere is provided with compressed air inlet.The utility model structure is simple, easy and simple to handle, level stability in good reliability, tower, and oxidizing temperature is low, occurs, content of nitric oxide is low in tail gas without gas-phase reaction.
Description
Technical field
The utility model relates to a kind of reaction tower of chemical industry, specifically a kind of production dimethyl sulfoxide (DMSO) sulfide oxidation tower.
Background technology
It is mainly raw material synthesizing dimethyl thioether (abbreviation thioether) under the effect of catalyst with hydrogen sulfide (or carbon disulfide) with methyl alcohol that the dimethyl sulfoxide (DMSO) (abbreviation sulfoxide) of current industrial comparative maturity is produced, thioether carries out oxidation reaction with oxic gas (gaseous mixture of oxygen and nitrogen oxide, nitrogen oxide is the gaseous mixture of nitrogen dioxide or nitric oxide and nitrogen dioxide) again and generates sulfoxide.
Existing sulfide oxidation tower is deposited following with problem: the outlet of (1) sulfoxide is arranged at the bottom of tower, generally outside tower, all arranges an inverted U pipe, and sulfoxide is sulfoxide outlet at the bottom of tower, then discharges oxidizing tower through inverted U pipe.If discharge nozzle blocking or the fluctuation of tower pressure, all can cause liquid level instability (even void tower) in tower; (2) in tail gas, content of nitric oxide is high, causes follow-up vent gas treatment operation difficulty; (3) oxidizing temperature is high, and temperature reaches more than 75 DEG C, easily causes the generation of gas-phase reaction, and the risk of thus blasting is higher.(5) reaction zone temperature control difficulty is larger.
Summary of the invention
The purpose of this utility model is to solve the problems of the technologies described above, there is provided that a kind of structure is simple, easy and simple to handle, level stability in good reliability, tower, oxidizing temperature is low, without the production dimethyl sulfoxide (DMSO) sulfide oxidation tower that content of nitric oxide in gas-phase reaction generation, tail gas is low.
Technical scheme comprises tower body, described tower body is divided into heating region, reaction zone, sub-cold-zone and cooling zone from the bottom to top, cooling water jecket on cooling water coil and tower wall is equipped with in described reaction zone, sub-cold-zone and cooling zone, described heating region is provided with oxic gas import, reaction zone is provided with thioether charging layer, cooling zone epimere is provided with offgas outlet, the position that described sub-cold-zone is positioned at below liquid level is provided with sulfoxide outlet, and described sub-cold-zone epimere is provided with compressed air inlet.
Described sulfoxide outlet is positioned at below liquid level 100 ~ 500mm.
Be provided with gas distributor in the epimere tower of described sub-cold-zone, described compressed air inlet is connected with described gas distributor.
Described sub-cold-zone hypomere is provided with packing layer.
The thickness of described packing layer is 300mm ~ 500mm.
Described reaction zone hypomere has the upper and lower two-layer thioether feed points of different vertical height.
The vertical range of described lower thioether charging layer distance heating region end face is 150mm ~ 300mm, and the vertical drop of upper thioether charging layer and lower thioether charging layer is at 300mm ~ 600mm.
Described heating region temperature controls between 43 ~ 55 DEG C, and the temperature of described reaction zone controls between 38 ~ 50 DEG C; The temperature of described sub-cold-zone controls between 35 ~ 47 DEG C; The temperature of described cooling zone controls between 28 ~ 38 DEG C.
Described heating region tower wall is provided with hot water jacket.
Inventor analyses in depth existing sulfide oxidation tower Problems existing, and it is improved, first sulfoxide is exported by being changed to the liquid level of sub-cold-zone at the bottom of tower with upper/lower positions, export under moving to fluid level by making sulfoxide, effectively can solve the problem of liquid level instability in tower, also without the need to using inverted U pipe, the generation of inverted U blockage problem is avoided.Liquid level 100 ~ 500mm in preferred described sulfoxide outlet distance tower, higher apart from liquid level in excessive then tower, make the separated space of tail gas less than normal, in too small then tower, liquid level is on the low side, makes reaction mother liquor amount on the low side, is unfavorable for absorption and the reaction of nitrogen dioxide; Inventor sets up compressed air inlet at sub-cold-zone epimere simultaneously, pass into air and can make bubbling and oxidation reaction occurs further for the nitric oxide in the tail gas gone out and the oxygen in air, content of nitric oxide in tail gas is declined, for follow-up vent gas treatment is provided convenience, nitrogen simultaneously in air reduces the concentration of nitrogen dioxide and thioether in tail gas, reduce the generation of gas-phase reaction, add the security of oxidizing process.In order to ensure to enter being uniformly distributed of tower compressed air, compressed air inlet being connected with gas distributor, making compressed air and tail gas Homogeneous phase mixing by gas distributor, fast fully reaction.
Further, inventor sets up packing layer at sub-cold-zone hypomere, makes gas-liquid mixture from reaction zone through packing layer, gas under the help of packing layer better by liquid in separate out, improve gas-liquid separation effect, described packing layer can select stainless steel Pall ring filler.The height of described packing layer preferably controls at 300mm ~ 500mm, packing layer thickness crosses the pressure drop that conference strengthens gas, packing layer thickness is too small, can not ensure the separating effect of gas-liquid, makes to discharge nitrogen dioxide content in sulfoxide bigger than normal, strengthens the load of subsequent handling.
Further, because reaction zone is reaction generating region, it is large that its temperature controls difficulty, in order to ensure that temperature controls in scope of design, under the prerequisite that original control device is constant, inventor provide the temperature control means newly increased, namely the upper and lower two-layer thioether feed points of different vertical height is set at reaction zone hypomere.During normal production; the charging simultaneously of upper and lower thioether charging layer; often oxidizing tower reaction zone temperature can be caused to raise due to the impact of upstream process aborning; upper thioether charging layer can be just utilized to adjust the inlet amount of thioether like this; reduce the carrying out of oxidation reaction; thus reduce reaction liberated heat, thus reach the object reducing tower temperature.Can control the inlet amount of upper thioether charging layer according to the temperature of reaction zone, the temperature as reaction zone is too high, then can turn down thioether charging layer, inlet amount is declined, if desired all right complete shut-down, otherwise then can open thioether charging layer.By said structure and simple adjustment method, the method for another effective regulation and control reaction zone temperature can be increased, avoid the excessive safety problem brought of temperature fluctuation in reaction zone.
Inventor Hai Duige district temperature adjusts, each district temperature entire lowering, the control of temperature controls by the cooling water inflow adjusting cooling water coil and the cooling water jecket arranged in each district, the maximum temperature of reaction zone controls below 50 DEG C, avoids overheatedly causing the generation of gas-phase reaction and the danger of blast.
Beneficial effect:
The utility model structure is simple, can carry out simple transformation to existing equipment can produce obvious technique effect, level stability in tower, and oxidizing temperature is low, and low without content of nitric oxide in gas-phase reaction generation, tail gas, security is good.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Wherein, thioether feed points, 6-compressed air inlet, the outlet of 7-sulfoxide, 8-air gas distributor, 9-packing layer, 10-hot water jacket, 11-cooling water jecket, 12-demister, 13-oxic gas gas distributor under 1-tower body, 2-cooling water coil, the import of 3-oxic gas, 4-offgas outlet, the upper thioether feed points of 5.1-, 5.2-.A-oxic gas, B-thioether, C-sulfoxide, D-compressed air, E-tail gas, F-heating region, G-reaction zone, the sub-cold-zone of H-, I-cooling zone.
Detailed description of the invention
Below in conjunction with accompanying drawing, explanation is further explained to the utility model:
See Fig. 1, tower body is followed successively by heating region F, reaction zone G, sub-cold-zone H and cooling zone I from the bottom to top, cooling water coil is equipped with in described reaction zone G, sub-cold-zone H and cooling zone I, tower wall is provided with cooling water jecket 11, is provided with the hot water jacket 10 on oxic gas gas distributor 13 and tower wall in described heating region.
Described heating region F is provided with the oxic gas import 3 be connected with oxic gas gas distributor 13, described reaction zone G hypomere has the upper thioether charging layer 5.1 of different vertical height and lower thioether charging layer 5.2, described lower thioether charging layer 5.2 is 150mm ~ 300mm apart from the vertical range of heating region F end face, and the vertical drop of upper thioether charging layer 5.1 and lower thioether charging layer 5.2 is between 300mm ~ 600mm.Cooling zone I epimere is provided with offgas outlet 4, and the position that described sub-cold-zone H is positioned at below liquid level is provided with sulfoxide outlet 7, distance liquid level 100 ~ 500mm.Described sub-cold-zone H epimere is provided with compressed air inlet 6, and described compressed air inlet 6 is connected with air gas distributor 8.Described sub-cold-zone H hypomere is provided with packing layer 9, and the thickness of described packing layer 9 is 300mm ~ 500mm.
Operation principle:
Oxic gas (the gaseous mixture of oxygen and nitrogen oxide, described nitrogen oxide is the gaseous mixture of nitrogen dioxide or nitric oxide and nitrogen dioxide) A enters in oxidizing tower through oxic gas import 3 and oxic gas gas distributor 13, be uniformly distributed in tower, heat up in heating region, enter reaction zone G subsequently, thioether is through upper, lower thioether charging layer 5.1, 5.2 enter reaction zone G hypomere, the two co-current contact in reaction zone G carries out chemical reaction and generates sulfoxide, reacted gas-liquid mixture rises and enters the packing layer 9 of sub-cold-zone H hypomere, under the effect of filler, gas-liquid is separated rapidly, gas rises at sub-cold-zone H liquid level bubbling and forms tail gas, the liquid sulfoxide be separated discharges oxidizing tower (without the need to using inverted U pipe) from the sulfoxide outlet 7 below liquid level, from tower body top, sub-cold-zone H discharges sulfoxide and can well ensure the stable of liquid level in tower.Compressed air (pressure is 0.2MPa ~ 0.5MPa gauge pressure) through being positioned at sub-cold-zone H epimere compressed air inlet 6 again through air gas distributor 8 be uniformly distributed in Ta Nei and cooling zone I and rising tail gas Homogeneous phase mixing and react, reduce the content of nitric oxide in tail gas, the tail gas after compressed air-treatment removes after mist through demister 8 and discharges oxidizing tower by the offgas outlet 4 of cooling zone I epimere.
The tower wall of described heating region F is provided with hot water jacket 10 for heating materials at bottom of tower, ensures that heating region F temperature maintains between 43-55 DEG C;
Other each district is equipped with cooling water jecket 11 on cooling water coil 2 and tower wall for controlling reaction temperature and being reacted gas-liquid mixture cooling, and reaction zone G can adopt segmentation (three sections or multistage) to cool, the method for temperature control to be separately to ensure that the temperature of reaction zone maintains between 38 ~ 50 DEG C; The temperature of sub-cold-zone H maintains between 35 ~ 47 DEG C; The temperature of cooling zone I maintains between 28 ~ 38 DEG C.
When the temperature of reaction zone G is more than 50 DEG C, the flow of upper thioether feed points 5.1 can be reduced, when the temperature of reaction zone G is more than 55 DEG C, can closes and close temperature in thioether feed points 5.1 to tower and return back in design temperature, avoid the too high risk of explosion brought of temperature.
Claims (9)
1. produce dimethyl sulfoxide (DMSO) sulfide oxidation tower for one kind, comprise tower body, described tower body is divided into heating region, reaction zone, sub-cold-zone and cooling zone from the bottom to top, cooling water jecket on cooling water coil and tower wall is equipped with in described reaction zone, sub-cold-zone and cooling zone, described heating region is provided with oxic gas import, reaction zone is provided with thioether charging, cooling zone epimere is provided with offgas outlet, it is characterized in that, the position that described sub-cold-zone is positioned at below liquid level is provided with sulfoxide outlet, and described sub-cold-zone epimere is provided with compressed air inlet.
2. production dimethyl sulfoxide (DMSO) sulfide oxidation tower as claimed in claim 1, is characterized in that, described sulfoxide outlet is positioned at below liquid level 100 ~ 500mm.
3. production dimethyl sulfoxide (DMSO) sulfide oxidation tower as claimed in claim 1 or 2, it is characterized in that, be provided with gas distributor in the epimere tower of described sub-cold-zone, described compressed air inlet is connected with described gas distributor.
4. production dimethyl sulfoxide (DMSO) sulfide oxidation tower as claimed in claim 1 or 2, it is characterized in that, described sub-cold-zone hypomere is provided with packing layer.
5. production dimethyl sulfoxide (DMSO) sulfide oxidation tower as claimed in claim 4, it is characterized in that, the thickness of described packing layer is 300mm ~ 500mm.
6. production dimethyl sulfoxide (DMSO) sulfide oxidation tower as claimed in claim 1 or 2, it is characterized in that, described reaction zone hypomere has the upper and lower two-layer thioether feed points of different vertical height.
7. production dimethyl sulfoxide (DMSO) sulfide oxidation tower as claimed in claim 6, it is characterized in that, the vertical range of described lower thioether charging layer distance heating region end face is between 150mm ~ 300mm, and the vertical drop of upper thioether charging layer and lower thioether charging layer is between 300mm ~ 600mm.
8. production dimethyl sulfoxide (DMSO) sulfide oxidation tower as claimed in claim 6, it is characterized in that, described heating region temperature controls between 43 ~ 55 DEG C, and the temperature of described reaction zone controls between 38 ~ 50 DEG C; The temperature of described sub-cold-zone controls between 35 ~ 47 DEG C; The temperature of described cooling zone controls between 28 ~ 38 DEG C.
9. production dimethyl sulfoxide (DMSO) sulfide oxidation tower as claimed in claim 1 or 2, it is characterized in that, described heating region tower wall is provided with hot water jacket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611345.6U CN204182376U (en) | 2014-10-21 | 2014-10-21 | Produce dimethyl sulfoxide (DMSO) sulfide oxidation tower |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420611345.6U CN204182376U (en) | 2014-10-21 | 2014-10-21 | Produce dimethyl sulfoxide (DMSO) sulfide oxidation tower |
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| Publication Number | Publication Date |
|---|---|
| CN204182376U true CN204182376U (en) | 2015-03-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420611345.6U Expired - Fee Related CN204182376U (en) | 2014-10-21 | 2014-10-21 | Produce dimethyl sulfoxide (DMSO) sulfide oxidation tower |
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| CN (1) | CN204182376U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275132A (en) * | 2014-10-21 | 2015-01-14 | 武汉江汉化工设计有限公司 | Thioether oxidation tower for producing dimethyl sulfoxide |
-
2014
- 2014-10-21 CN CN201420611345.6U patent/CN204182376U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104275132A (en) * | 2014-10-21 | 2015-01-14 | 武汉江汉化工设计有限公司 | Thioether oxidation tower for producing dimethyl sulfoxide |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150304 |