CN203540297U - Xylene tail gas recovery device - Google Patents
Xylene tail gas recovery device Download PDFInfo
- Publication number
- CN203540297U CN203540297U CN201320671219.5U CN201320671219U CN203540297U CN 203540297 U CN203540297 U CN 203540297U CN 201320671219 U CN201320671219 U CN 201320671219U CN 203540297 U CN203540297 U CN 203540297U
- Authority
- CN
- China
- Prior art keywords
- tail gas
- dimethylbenzene
- xylene
- liquid
- spray column
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 title claims abstract description 109
- 238000011084 recovery Methods 0.000 title abstract description 15
- 239000008096 xylene Substances 0.000 title abstract description 9
- 239000007921 spray Substances 0.000 claims abstract description 43
- 239000007788 liquid Substances 0.000 claims abstract description 40
- 238000009434 installation Methods 0.000 claims description 3
- 239000007789 gas Substances 0.000 abstract description 28
- 238000000034 method Methods 0.000 abstract description 16
- DTGKSKDOIYIVQL-WEDXCCLWSA-N (+)-borneol Chemical compound C1C[C@@]2(C)[C@@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-WEDXCCLWSA-N 0.000 abstract description 8
- DTGKSKDOIYIVQL-MRTMQBJTSA-N Isoborneol Natural products C1C[C@@]2(C)[C@H](O)C[C@@H]1C2(C)C DTGKSKDOIYIVQL-MRTMQBJTSA-N 0.000 abstract description 8
- CKDOCTFBFTVPSN-UHFFFAOYSA-N borneol Natural products C1CC2(C)C(C)CC1C2(C)C CKDOCTFBFTVPSN-UHFFFAOYSA-N 0.000 abstract description 8
- DTGKSKDOIYIVQL-UHFFFAOYSA-N dl-isoborneol Natural products C1CC2(C)C(O)CC1C2(C)C DTGKSKDOIYIVQL-UHFFFAOYSA-N 0.000 abstract description 8
- DSSYKIVIOFKYAU-XCBNKYQSSA-N (R)-camphor Chemical compound C1C[C@@]2(C)C(=O)C[C@@H]1C2(C)C DSSYKIVIOFKYAU-XCBNKYQSSA-N 0.000 abstract description 7
- 241000723346 Cinnamomum camphora Species 0.000 abstract description 7
- 229930008380 camphor Natural products 0.000 abstract description 7
- 229960000846 camphor Drugs 0.000 abstract description 7
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 5
- 239000001257 hydrogen Substances 0.000 abstract description 5
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005516 engineering process Methods 0.000 abstract description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 18
- 238000006356 dehydrogenation reaction Methods 0.000 description 7
- URLKBWYHVLBVBO-UHFFFAOYSA-N Para-Xylene Chemical group CC1=CC=C(C)C=C1 URLKBWYHVLBVBO-UHFFFAOYSA-N 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000004064 recycling Methods 0.000 description 3
- 230000000630 rising effect Effects 0.000 description 3
- 238000010521 absorption reaction Methods 0.000 description 2
- 239000003463 adsorbent Substances 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001704 evaporation Methods 0.000 description 2
- 230000008020 evaporation Effects 0.000 description 2
- 150000002431 hydrogen Chemical class 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
- 238000002336 sorption--desorption measurement Methods 0.000 description 2
- 239000002912 waste gas Substances 0.000 description 2
- ZVORKXCTZVRBLN-UHFFFAOYSA-N 1,7,7-trimethylbicyclo[2.2.1]heptan-2-one 1,2-xylene Chemical compound CC1=C(C=CC=C1)C.C12(C(=O)CC(CC1)C2(C)C)C ZVORKXCTZVRBLN-UHFFFAOYSA-N 0.000 description 1
- 239000002250 absorbent Substances 0.000 description 1
- 230000002745 absorbent Effects 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical class C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 1
- 238000010992 reflux Methods 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000001577 simple distillation Methods 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
The utility model relates to the xylene tail gas recovery technology, in particular to a xylene tail gas recovery device which is suitable for recovering xylene generated during the process of dehydrogenizing isoborneol to produce camphor. The xylene tail gas recovery device is structurally characterized in that by comprising a spray tower and a liquid reception tank, wherein the spray tower is of a cylindrical structure and is uprightly arranged on the liquid reception tank, an outlet below the spray tower is positioned in the liquid reception tank, a gas inlet is formed in the side surface of the lower part of the spray tower and inclines downwards, and a liquid distributor is arranged at the top part of the inner cavity of the spray tower. The xylene tail gas recovery device is simple relatively, has the advantages of low energy consumption and high xylene recovery efficiency, and can effectively solve the problem that evaporated xylene carried by a great amount of hydrogen during camphor production through dehydrogenization of the isoborneol cannot be timely cooled when passing through a condenser at a high speed.
Description
Technical field
The utility model relates to a kind of dimethylbenzene tail gas recycle technology, particularly a kind of dimethylbenzene device for recovering tail gas, and it is applicable to isoborneol dehydrogenation and produces the dimethylbenzene recovery after camphor.
Background technology
Dimethylbenzene is a kind of harmful material, has strict restriction in China's discharge standard of air pollutants.Isoborneol dehydrogenation is produced in camphor process and is adopted dimethylbenzene to make solvent, reaction temperature is higher, early stage, reaction rate was larger, produced a large amount of hydrogen, and the dimethylbenzene that is carrying evaporation passes through condenser with larger speed, cause the heat exchange of part dimethylbenzene insufficient, can not be cooled down in time, added that dimethylbenzene itself has volatility, is also not easy to be reclaimed by total condensation simultaneously, therefore cause part dimethylbenzene to enter in atmosphere with hydrogen, not only polluted atmosphere but also wasted raw material.
The recovery of xylene waste gas at present has adsorption/desorption method, first adopts the adsorbents such as activated carbon fiber that the dimethylbenzene in tail gas is adsorbed, and carries out afterwards to a certain extent desorption, thereby makes dimethylbenzene enrichment in tail gas, reaches the object of recovery.This method operating process more complicated, need to often carry out the repetitive process of adsorption-desorption, faces the problems such as adsorbent renewal simultaneously, causes the problems such as equipment is complicated, and investment and maintenance cost are large.In addition, adopt in addition the method for solvent absorption to carry out the recovery of dimethylbenzene, then adopt rectification method that dimethylbenzene is reclaimed, reach the object that dimethylbenzene reclaims.Patent CN87100454 proposes to adopt white oil as absorbent, the dimethylbenzene in waste gas to be absorbed, and then by simple distillation, dimethylbenzene is reclaimed.The method has reached the object that dimethylbenzene is recycled substantially, but the method equipment investment is large, and energy consumption is higher.Also have patent CN200920276693.1 to adopt the pipeline paraxylene of stream chilled water in sleeve pipe to lower the temperature to reach the object that reclaims dimethylbenzene.The method need be used chilled water, and energy consumption is larger, and in gas in pipelines and sleeve pipe, chilled water heat exchange effect is poor, and the recovery of producing dimethylbenzene in camphor process for isoborneol dehydrogenation is not too applicable.
Utility model content
The purpose of this utility model is to provide a kind of simple, convenient, dimethylbenzene device for recovering tail gas that cost is low, effective according to the deficiencies in the prior art part.
The utility model is realized by following approach:
Dimethylbenzene device for recovering tail gas, its structural feature is, include spray column and liquid reception tank, spray column is cylinder structure, uprightly be arranged on liquid reception tank, the outlet of spray column below is arranged in liquid reception tank, and the middle part of spray column is provided with air inlet on the side of position on the lower, this air inlet is downward-sloping installation, and the inner cavity top of spray column is provided with liquid distribution trough.
During use, the dimethylbenzene tail gas discharging in isoborneol dehydrogenation production camphor process enters in spray column via the air inlet of spray column, and in spray column to rising, in the process rising, fully contact with the water being uniformly distributed spray through liquid distribution trough from tower top, finally sprayed and formed dimethylbenzene liquid, and along with water flows into the reception tank below spray column, the water of dimethylbenzene liquid now and conduct spray will form dimethylbenzene upper in liquid reception tank, water under liquid-liquid diphase double-layer structural, finally by vacuum, upper strata dimethylbenzene is sucked to dimethylbenzene receiving tank, realize the recovery of dimethylbenzene in tail gas.The downward-sloping water of spray or the dimethylbenzene liquid can avoided of air inlet enters the reactor in isoborneol dehydrogenation production camphor process by this air inlet.And be arranged in middle part, be to fall into pond because allow dimethylbenzene gas have enough spaces to contact with shower water to be condensed into liquid on the lower.
The utility model is immiscible according to dimethylbenzene and water, dimethylbenzene is formed to liquid condition by the mode spraying, and in liquid reception tank, form immiscible biliquid layer with water, thereby realized simply and easily the recovery of paraxylene tail gas, reclaim convenience, simple in equipment so cost low, and efficiency is high.
Also include circulating pump, the bottom of described liquid reception tank has liquid outlet, and this liquid outlet is connected and is communicated with the tank at spray column top by return duct and the circulating pump that is arranged on return duct.
Under the effect of circulating pump, the water that is positioned at below in liquid reception tank just can be squeezed into spray column again by return duct, thereby reaches the object recycling, not only environmental protection and energy saving, and can reduce costs.
Described spray column, or packed tower or sieve-plate tower.Preferred filler tower.
In sum, the utility model provides a kind of dimethylbenzene device for recovering tail gas, and it introduces spray column by tail gas, water sprays, dimethylbenzene in tail gas is cooled to liquid and in water surface enrichment, thereby reaches the object that reclaims dimethylbenzene, the dimethylbenzene of recovery can directly utilize.Reclaim convenient, simple in equipment so cost low, and efficiency is high, has both solved dimethylbenzene and be discharged in atmosphere and cause and reached air-polluting problem and economized in raw materials again, the object reducing production costs simultaneously.
Accompanying drawing explanation
Figure 1 shows that the principle framework structural representation of dimethylbenzene device for recovering tail gas described in the utility model;
Below in conjunction with embodiment, the utility model is described further.
The specific embodiment
Most preferred embodiment:
With reference to accompanying drawing 1, dimethylbenzene device for recovering tail gas, include spray column 2 and liquid reception tank 3, spray column 2 is cylinder structure, uprightly be arranged on liquid reception tank 3, the outlet of spray column 2 belows is arranged in liquid reception tank 3, and the lower side of spray column 2 is provided with air inlet 1, this air inlet is downward-sloping installation, and the inner cavity top of spray column 2 is provided with liquid distribution trough.Also include circulating pump 4, the bottom of described liquid reception tank 3 has liquid outlet, and this liquid outlet is connected and is communicated with the tank at spray column 2 tops by return duct and the circulating pump 4 that is arranged on return duct.
Concrete: spray column bottom part submerges in reception tank to reach the effect of fluid-tight, spray column bottom sides has gas access, gas access is obliquely installed, in case enter in reactor as the aqueous reflux of spray agent, water in reception tank is squeezed into tower top by circulating pump, through liquid distribution trough, flow into equably in tower again, through tower, finally flow into again reception tank to reach the object recycling.Dimethylbenzene in absorption cell sucks dimethylbenzene receiving tank by vacuum and is reclaimed.
Workflow is: and the dimethylbenzene tail gas that is mixed with hydrogen very fast from dehydrogenation pot condenser flow velocity out enters spray column 2 by the gas access 1 of spray column, the gas that enters spray column fully contacts with the water being uniformly distributed spray through liquid distribution trough from tower top in the process rising, finally sprayed and formed dimethylbenzene liquid, and along with water flows into the reception tank 3 below spray column, form liquid-liquid diphase and in upper strata, finally by vacuum, upper strata dimethylbenzene is sucked to dimethylbenzene receiving tank, realize the recovery of dimethylbenzene in tail gas, water in reception tank is squeezed in spray column to reach the object recycling by pump 4 again.
Equipment described in the utility model is relatively simple, energy consumption is lower, dimethylbenzene organic efficiency is higher, has effectively solved isoborneol dehydrogenation and has produced the problem that the camphor dimethylbenzene that a large amount of hydrogen is carrying evaporation early stage can not be cooled down by condenser in time with the speed compared with large.
It is same as the prior art that the utility model is not stated part.
Claims (2)
1. dimethylbenzene device for recovering tail gas, it is characterized in that, include spray column and liquid reception tank, spray column is cylinder structure, uprightly be arranged on liquid reception tank, the outlet of spray column below is arranged in liquid reception tank, and the middle part of spray column is provided with air inlet on the side of position on the lower, this air inlet is downward-sloping installation, and the inner cavity top of spray column is provided with liquid distribution trough.
2. dimethylbenzene device for recovering tail gas according to claim 1, it is characterized in that, also include circulating pump, the bottom of described liquid reception tank has liquid outlet, and this liquid outlet is connected and is communicated with the tank at spray column top by return duct and the circulating pump that is arranged on return duct.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671219.5U CN203540297U (en) | 2013-10-29 | 2013-10-29 | Xylene tail gas recovery device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320671219.5U CN203540297U (en) | 2013-10-29 | 2013-10-29 | Xylene tail gas recovery device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203540297U true CN203540297U (en) | 2014-04-16 |
Family
ID=50458467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320671219.5U Expired - Lifetime CN203540297U (en) | 2013-10-29 | 2013-10-29 | Xylene tail gas recovery device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203540297U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334332A (en) * | 2016-09-23 | 2017-01-18 | 东莞市联洲知识产权运营管理有限公司 | Solvent recovery device used during film production process |
| CN108250057A (en) * | 2018-03-14 | 2018-07-06 | 梧州黄埔化工药业有限公司 | A kind of camphor production method and its isoborneol dissolution equipment |
| CN110668931A (en) * | 2019-10-21 | 2020-01-10 | 福建南平青松化工有限公司 | Apparatus and method for continuously preparing camphor |
| TWI690362B (en) * | 2018-06-01 | 2020-04-11 | 合謙化學股份有限公司 | Treatment method for semiconductor process waste gas |
| CN112221283A (en) * | 2020-08-20 | 2021-01-15 | 苏州乔发环保科技股份有限公司 | Wet dust collector |
| CN112679388A (en) * | 2020-12-28 | 2021-04-20 | 浙江丽水有邦新材料有限公司 | Preparation method and preparation device of 2, 6-diisopropylbenzene isocyanate |
-
2013
- 2013-10-29 CN CN201320671219.5U patent/CN203540297U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106334332A (en) * | 2016-09-23 | 2017-01-18 | 东莞市联洲知识产权运营管理有限公司 | Solvent recovery device used during film production process |
| CN108250057A (en) * | 2018-03-14 | 2018-07-06 | 梧州黄埔化工药业有限公司 | A kind of camphor production method and its isoborneol dissolution equipment |
| TWI690362B (en) * | 2018-06-01 | 2020-04-11 | 合謙化學股份有限公司 | Treatment method for semiconductor process waste gas |
| CN110668931A (en) * | 2019-10-21 | 2020-01-10 | 福建南平青松化工有限公司 | Apparatus and method for continuously preparing camphor |
| CN110668931B (en) * | 2019-10-21 | 2024-05-14 | 福建南平青松化工有限公司 | Apparatus and method for continuously preparing camphor |
| CN112221283A (en) * | 2020-08-20 | 2021-01-15 | 苏州乔发环保科技股份有限公司 | Wet dust collector |
| CN112679388A (en) * | 2020-12-28 | 2021-04-20 | 浙江丽水有邦新材料有限公司 | Preparation method and preparation device of 2, 6-diisopropylbenzene isocyanate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20211124 Address after: 354200 No. 85 Tower Road, Hui Yao Industrial Park, Jianyang District, Nanping, Fujian Patentee after: FUJIAN NANPING GREEN PINE CHEMICAL Co.,Ltd. Address before: 354200 Jianyang Huiyao Industrial Park, Nanping City, Fujian Province Patentee before: FUJIAN GREEN PINE Co.,Ltd. |
|
| TR01 | Transfer of patent right | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140416 |
|
| CX01 | Expiry of patent term |