CN209276454U - A kind of aromatic extraction unit that can recycle distillation overhead water - Google Patents
A kind of aromatic extraction unit that can recycle distillation overhead water Download PDFInfo
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- CN209276454U CN209276454U CN201822174093.6U CN201822174093U CN209276454U CN 209276454 U CN209276454 U CN 209276454U CN 201822174093 U CN201822174093 U CN 201822174093U CN 209276454 U CN209276454 U CN 209276454U
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- solvent recovery
- tower
- distillation tower
- tank
- return tank
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Abstract
The utility model discloses the aromatic extraction units that one kind can recycle distillation overhead water, including extraction distillation tower, extraction distillation tower return tank, extractive distillation tower top water pump, solvent recovery tower top return tank, solvent recovery tower top water pump, stripped vapor generator, solvent reclamation tank and solvent recovery tower, extraction distillation tower return tank, it is sequentially connected between extractive distillation tower top water pump and extraction distillation tower by pipeline, extraction distillation tower return tank, solvent recovery tower top return tank, solvent recovery tower top water pump, stripped vapor generator, it is sequentially connected between solvent reclamation tank and solvent recovery tower by pipeline, extraction distillation tower return tank, connecting pipe between solvent recovery tower top return tank is equipped with regulating valve；The utility model can not only guarantee the steady operation of destilling tower, while can send extra water to being utilized in solvent recovery tower again.
Description
Technical field
The utility model relates to Aromatics Extractive Project fields, and in particular to the aromatic hydrocarbons that one kind can recycle distillation overhead water is taken out
Mention device.
Background technique
Aromatics Extractive Project is also referred to as aromatic hydrocarbons extraction, with the Liquid-liquid Extraction Processes of extractant aromatics separation from hydrocarbon mixture.It is existing
Have in technology, during Aromatics Extractive Project, extractive distillation tower top water all returns to the 20th layer of tower tray of extractive distillation tower bottom, because of tower
Operation by tower pressure, it is cold after influence factors, the extractive distillation tower top water such as temperature, inlet amount fluctuation can change therewith, shadow therewith
Extractive distillation tower bottom the 20th layer of tray temperature and evaporation capacity are rung, bring is that tower operates bigger fluctuation, the variation of overhead water amount
Become larger, form vicious circle, if simple is secured into the water for mentioning the 20th layer of tower tray in destilling tower bottom, the variation of water level be will be unable to
Control, or need to carry out externally discharged waste water when liquid level is high, it causes to waste.
Utility model content
The purpose of the utility model is to overcome the above-mentioned problems in the prior art, and providing one kind can recycle
Distill overhead water aromatic extraction unit, can not only guarantee the steady operation of destilling tower, at the same extra water can be sent to
It is utilized again in solvent recovery tower.
To realize above-mentioned technical purpose and the technique effect, the utility model is achieved through the following technical solutions:
A kind of aromatic extraction unit that can recycle distillation overhead water, including extraction distillation tower, extraction distillation tower return
Flow tank, extractive distillation tower top water pump, solvent recovery tower top return tank, solvent recovery tower top water pump, stripped vapor generator, solvent
Regenerating tank and solvent recovery tower pass through between the extraction distillation tower return tank, extractive distillation tower top water pump and extraction distillation tower
Pipeline is sequentially connected, and the extraction distillation tower return tank, solvent recovery tower top return tank, solvent recovery tower top water pump, stripping steam
It is sequentially connected between vapour generator, solvent reclamation tank and solvent recovery tower by pipeline, the extraction distillation tower return tank, solvent
The connecting pipe recycled between return tank of top of the tower is equipped with regulating valve.
Further, pressure is 0.1MPa in the extraction distillation tower return tank, in the solvent recovery tower top return tank
Pressure -0.05MPa.
Further, the regulating valve is pneumatic altitude valve.
Further, the extractive distillation tower top water pump is connected by pipeline with the 20th layer of tower tray of extraction distillation tower.
Further, the solvent reclamation tank at the top of pipeline and stripped vapor generator by being connected.
The income effect of the utility model is:
The utility model, which can not only be fixed, returns to the 20th layer of tower tray water of extractive distillation tower bottom, guarantees extraction distillation tower
Extra water is sent to solvent recovery tower top by regulating valve and is returned when extractive distillation tower top return tank water level is high by steady operation
Stream tank pump entrance impacts without the operation to solvent recovery tower into steam generator, both ensure that extractive distillation
The stable operation of tower, and realize making full use of for water, reduce system water supplement amount.
Detailed description of the invention
In order to illustrate more clearly of the technical solution of the utility model embodiment, make required for being described below to embodiment
Attached drawing is briefly described, it should be apparent that, the drawings in the following description are merely some embodiments of the present invention,
For those of ordinary skill in the art, without creative efforts, it can also be obtained according to these attached drawings
Other attached drawings.
FIG. 1 is a schematic structural view of the utility model；
Fig. 2 is enlarged drawing at the utility model A；
Fig. 3 is enlarged drawing at the utility model B.
Specific embodiment
The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model
Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole
Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without creative efforts
All other embodiment obtained, fall within the protection scope of the utility model.
As shown in Figure 1-3, the utility model is the aromatic extraction unit that one kind can recycle distillation overhead water, including
Extraction distillation tower 1, extraction distillation tower return tank 5, extractive distillation tower top water pump 7, solvent recovery tower top return tank 8, solvent recovery
Tower top water pump 9, stripped vapor generator 3, solvent reclamation tank 2 and solvent recovery tower 4, extraction distillation tower return tank 5, extractive distillation
It is sequentially connected between tower top water pump 7 and extraction distillation tower 1 by pipeline, extraction distillation tower return tank 5, the reflux of solvent recovery tower top
Between tank 8, solvent recovery tower top water pump 9, stripped vapor generator 3, solvent reclamation tank 2 and solvent recovery tower 4 by pipeline according to
Secondary connection, the connecting pipe between extraction distillation tower return tank 5, solvent recovery tower top return tank 8 are equipped with regulating valve 6.
Wherein, pressure is 0.1MPa, pressure-in solvent recovery tower top return tank 8 in extraction distillation tower return tank 5
0.05MPa may be implemented to flow automatically.
Wherein, regulating valve 6 be pneumatic altitude valve, can according to the water level in extraction distillation tower return tank 5 automatically into
Row is adjusted.
Wherein, extractive distillation tower top water pump 7 is connected by pipeline with the 20th layer of tower tray of extraction distillation tower 1.
Wherein, solvent reclamation tank 2 at the top of pipeline and stripped vapor generator 3 by being connected.
One concrete application of the present embodiment are as follows: in use, the water in extraction distillation tower return tank 5 passes through extraction distillation tower
It pushes up water pump 7 and enters the 20th layer of tower tray of extraction distillation tower 1, by the range of fixed extractive distillation tower top water pump 7 come firm discharge, protect
The normal of flow is demonstrate,proved, the operation is stable of extraction distillation tower is made, when the water level of extraction distillation tower return tank 5 is higher, 6 meeting of regulating valve
It is opened according to increasing for water level, the water in extraction distillation tower return tank 5 enters solvent recovery tower top return tank 8 by pipeline,
It is sent into stripped vapor generator 3 by solvent recovery tower top water pump 9 again, water is become into steam, steam occurs from stripped vapor
It comes out to enter in solvent reclamation tank 2 by pipeline at the top of device 3 and be mixed with solvent, then come out out of solvent reclamation tank 2 and pass through pipeline
It is used into solvent recovery tower 4 as stripped vapor.
To sum up, the utility model can not only guarantee the steady operation of destilling tower, while can send extra water to molten
It is utilized again in agent recovery tower.
In the description of this specification, the description of reference term " one embodiment ", " example ", " specific example " etc. means
Specific features described in conjunction with this embodiment or example, structure, material live feature be contained in the utility model at least one
In embodiment or example.In the present specification, schematic expression of the above terms be not necessarily referring to identical embodiment or
Example.Moreover, particular features, structures, materials, or characteristics described can be in any one or more embodiment or examples
In can be combined in any suitable manner.
The preferred embodiment in the utility model disclosed above is only intended to help to illustrate the utility model.Preferred embodiment is simultaneously
There is no the details that detailed descriptionthe is all, also not limiting the utility model is only the specific embodiment.Obviously, according to this theory
The content of bright book can make many modifications and variations.These embodiments are chosen and specifically described to this specification, is in order to preferably
The principles of the present invention and practical application are explained, so that skilled artisan be enable to better understand and utilize this
Utility model.The utility model is limited only by the claims and their full scope and equivalents.
Claims (5)
1. one kind can recycle the aromatic extraction unit of distillation overhead water, including extraction distillation tower (1), extraction distillation tower return
Flow tank (5), extractive distillation tower top water pump (7), solvent recovery tower top return tank (8), solvent recovery tower top water pump (9), stripping steaming
Vapour generator (3), solvent reclamation tank (2) and solvent recovery tower (4), it is characterised in that: the extraction distillation tower return tank (5),
It is sequentially connected between extractive distillation tower top water pump (7) and extraction distillation tower (1) by pipeline, the extraction distillation tower return tank
(5), solvent recovery tower top return tank (8), solvent recovery tower top water pump (9), stripped vapor generator (3), solvent reclamation tank (2)
It is sequentially connected between solvent recovery tower (4) by pipeline, the extraction distillation tower return tank (5), the reflux of solvent recovery tower top
Connecting pipe between tank (8) is equipped with regulating valve (6).
2. the aromatic extraction unit that one kind according to claim 1 can recycle distillation overhead water, it is characterised in that:
The interior pressure of the extraction distillation tower return tank (5) is 0.1MPa, the interior pressure-of the solvent recovery tower top return tank (8)
0.05MPa。
3. the aromatic extraction unit that one kind according to claim 1 can recycle distillation overhead water, it is characterised in that:
The regulating valve (6) is pneumatic altitude valve.
4. the aromatic extraction unit that one kind according to claim 1 can recycle distillation overhead water, it is characterised in that:
The extractive distillation tower top water pump (7) is connected by pipeline with the 20th layer of tower tray of extraction distillation tower (1).
5. the aromatic extraction unit that one kind according to claim 1 can recycle distillation overhead water, it is characterised in that:
The solvent reclamation tank (2) at the top of pipeline and stripped vapor generator (3) by being connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174093.6U CN209276454U (en) | 2018-12-24 | 2018-12-24 | A kind of aromatic extraction unit that can recycle distillation overhead water |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822174093.6U CN209276454U (en) | 2018-12-24 | 2018-12-24 | A kind of aromatic extraction unit that can recycle distillation overhead water |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209276454U true CN209276454U (en) | 2019-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822174093.6U Active CN209276454U (en) | 2018-12-24 | 2018-12-24 | A kind of aromatic extraction unit that can recycle distillation overhead water |
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| CN (1) | CN209276454U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209799A (en) * | 2020-10-14 | 2021-01-12 | 潍坊弘润石化科技有限公司 | Benzene-containing wastewater recycling technology |
-
2018
- 2018-12-24 CN CN201822174093.6U patent/CN209276454U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112209799A (en) * | 2020-10-14 | 2021-01-12 | 潍坊弘润石化科技有限公司 | Benzene-containing wastewater recycling technology |
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