CN208104265U - The three-tower rectification recyclable device of waste water containing DMF - Google Patents
The three-tower rectification recyclable device of waste water containing DMF Download PDFInfo
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- CN208104265U CN208104265U CN201820243205.6U CN201820243205U CN208104265U CN 208104265 U CN208104265 U CN 208104265U CN 201820243205 U CN201820243205 U CN 201820243205U CN 208104265 U CN208104265 U CN 208104265U
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Abstract
The utility model relates to rectifying recovery technology fields,The in particular three-tower rectification of waste water containing DMF recyclable device,Ontology is recycled including rectifying,Wastewater storage tank and catch basin,The side of wastewater storage tank is equipped with level-one and tower is concentrated under reduced pressure,The side that tower is concentrated under reduced pressure in level-one is equipped with second depressurized concentration tower,The side of second depressurized concentration tower is equipped with vacuum rectification tower,In the utility model,Rectifying recycling is carried out to the DMF in waste water containing DMF using three tower recovery process,Waste water first passes through one,Second depressurized concentration tower carries out two-stage concentrate,Rectification and purification is carried out by vacuum rectification tower again,To obtain the DMF of high-purity,It can be the heat supply of second depressurized concentration tower that vapor caused by tower, which is concentrated under reduced pressure, in level-one,Vapor caused by second depressurized concentration tower can be vacuum rectification tower heat supply,Tower heat supply can be concentrated under reduced pressure for level-one in vapor caused by vacuum rectification tower,Compared with two tower recovery process,Substantially reduce energy consumption,Greatly improve the quality of gained DMF,And the rate of recovery greatly improves.
Description
Technical field
The utility model relates to rectifying recovery technology fields, the specially three-tower rectification of waste water containing DMF recyclable device.
Background technique
The scientific name of DMF is n,N-Dimethylformamide, is a kind of chemical substance, is both that a kind of chemical industry that purposes is extremely wide is former
Material and a kind of excellent solvent having many uses.DMF can cause eye to eye, skin and the irritating effect of respiratory tract, steam
With the upper respiratory tract is light, moderate irritation, therefore when waste water containing DMF is handled need to be to DMF therein progress rectifying recycling at
Reason.
Double tower recovery process is usually used in the rectification-recovery process of the existing waste water containing DMF, and by low-pressure steam or leads
Hot oil heat supply, waste water containing DMF first removes a part of water through normal pressure concentration tower, then obtains high-purity DMF, this time through vacuum rectification tower
It is high to receive process energy consumption, gained DMF unstable quality, and the rate of recovery is lower.In consideration of it, it is proposed that the three-tower rectification of waste water containing DMF
Recyclable device.
Utility model content
The purpose of this utility model is to provide the three-tower rectification recyclable devices of waste water containing DMF, to solve above-mentioned background technique
In the rectification-recovery process of the existing waste water containing DMF double tower recovery process is usually used, the recovery process energy consumption is high, gained
DMF unstable quality, the lower problem of the rate of recovery.
To achieve the above object, the utility model provides the following technical solutions：
The three-tower rectification recyclable device of waste water containing DMF, including wastewater storage tank and catch basin, the side of the wastewater storage tank are equipped with
Tower is concentrated under reduced pressure in level-one, and the side that tower is concentrated under reduced pressure in the level-one is equipped with second depressurized concentration tower, the second depressurized concentration tower
Side be equipped with vacuum rectification tower, the side of the vacuum rectification tower is equipped with DMF storage tank, and the wastewater storage tank and the level-one subtract
It presses and is equipped with the first liquid pump between concentration tower, the level-one, which is concentrated under reduced pressure between tower and the second depressurized concentration tower, is equipped with the second liquid
Pump is equipped with third liquid pump between the second depressurized concentration tower and the vacuum rectification tower.
Preferably, be connected with perfusion tube between the wastewater storage tank and first liquid pump, first liquid pump with it is described
Level-one is concentrated under reduced pressure between tower and is also connected with perfusion tube.
Preferably, first liquid pump and the level-one, which are concentrated under reduced pressure between tower, is equipped with the first vapour compression machine, and described the
The side of one vapour compression machine is equipped with the first reboiler.
Preferably, second liquid pump and the level-one are concentrated under reduced pressure between tower and are connected with perfusion tube, second liquid pump
It is also connected with perfusion tube between the second depressurized concentration tower, is set between second liquid pump and the second depressurized concentration tower
There is the second vapour compression machine, the side of second vapour compression machine is equipped with the second reboiler.
Preferably, perfusion tube, the third liquid pump are connected between the third liquid pump and the second depressurized concentration tower
It is also connected with perfusion tube between the vacuum rectification tower, third is equipped between the third liquid pump and the vacuum rectification tower and is steamed
The side of vapour compressor, the third vapour compression machine is equipped with third reboiler.
Preferably, condenser is equipped between the vacuum rectification tower and the DMF storage tank, the side of the condenser is equipped with
4th liquid pump.
Preferably, appendix is connected between first vapour compression machine and the vacuum rectification tower, described first steams
Also appendix is connected between vapour compressor and first reboiler, tower is concentrated under reduced pressure in first reboiler and the level-one
Between be connected with connecting tube, return pipe, the water outlet of the return pipe are connected between first reboiler and the catch basin
End is run through the top of the catch basin and is inserted into the inner.
Preferably, second vapour compression machine and the level-one, which are concentrated under reduced pressure between tower, is connected with appendix, and described the
Also appendix is connected between two vapour compression machines and second reboiler, second reboiler and the second depressurized are dense
It is connected with connecting tube between contracting tower, is connected with return pipe between second reboiler and the catch basin.
Preferably, it is connected with appendix between the third vapour compression machine and the second depressurized concentration tower, described
Also appendix, the third reboiler and the vacuum rectification tower are connected between three vapour compression machines and the third reboiler
Between be connected with connecting tube, be connected with return pipe between the third reboiler and the catch basin.
Preferably, it is connected with appendix between the condenser and the vacuum rectification tower, the condenser and described the
It is connected with perfusion tube between four liquid pumps, is also connected with perfusion tube between the 4th liquid pump and the DMF storage tank.
Compared with prior art, the beneficial effects of the utility model：In the utility model, using three tower recovery process to containing
DMF in DMF waste water carries out rectifying recycling, first passes through level-one and tower is concentrated under reduced pressure waste water is removed a part of water and carries out level-one and mentions
It is dense, then a part of water is removed by second depressurized concentration tower and carries out second level concentrate, rectifying is carried out finally by vacuum rectification tower
Purification, to obtain the DMF of high-purity, it can be that second depressurized concentration tower supplies that level-one, which is concentrated under reduced pressure in tower and removes water generated vapor,
Heat, remove water in second depressurized concentration tower caused by vapor can be vacuum rectification tower heat supply, rectifying is produced in vacuum rectification tower
Raw vapor can be concentrated under reduced pressure tower for level-one and carry out heat supply, this technique substantially reduces energy consumption compared with two tower recovery process, protects
The quality of gained DMF is demonstrate,proved, and the rate of recovery greatly improves.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model；
Fig. 2 is the structural schematic diagram of part A shown in Fig. 1；
Fig. 3 is the structural schematic diagram of part B shown in Fig. 1.
In figure：1, wastewater storage tank；2, tower is concentrated under reduced pressure in level-one；3, second depressurized concentration tower；4, vacuum rectification tower；5,DMF
Storage tank；6, catch basin；7, the first liquid pump；8, the first vapour compression machine；9, the first reboiler；10, the second liquid pump；11, second steams
Vapour compressor；12, the second reboiler；13, third liquid pump；14, third vapour compression machine；15, third reboiler；16, condenser；
17, the 4th liquid pump；18, perfusion tube；19, appendix；20, return pipe；21, connecting tube.
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 making creative work
Every other embodiment obtained, fall within the protection scope of the utility model.
Fig. 1-3 is please referred to, the utility model provides a kind of technical solution：
The three-tower rectification recyclable device of waste water containing DMF, including wastewater storage tank 1 and catch basin 6, wastewater storage tank 1 is for temporarily storing up
Waste water containing DMF is deposited, the side of wastewater storage tank 1 is equipped with level-one and tower 2 is concentrated under reduced pressure, and wastewater storage tank 1 and level-one are concentrated under reduced pressure between tower 2
Equipped with the first liquid pump 7, perfusion tube 18 is connected between wastewater storage tank 1 and the first liquid pump 7, the first liquid pump 7 is concentrated under reduced pressure with level-one
Also perfusion tube 18 is connected between tower 2, wastewater storage tank 1 is included DMF waste water and is pumped into level-one decompression through perfusion tube 18 by the first liquid pump 7
In concentration tower 2, tower 2 is concentrated under reduced pressure by conduction oil heat supply in level-one, can will be contained DMF waste water and be removed a part of water and carry out level-one and mention
It is dense.
The side that tower 2 is concentrated under reduced pressure in level-one is equipped with second depressurized concentration tower 3, and tower 2 is concentrated under reduced pressure in level-one and second depressurized is dense
The second liquid pump 10 is equipped between contracting tower 3, the second liquid pump 10 and level-one are concentrated under reduced pressure between tower 2 and are connected with perfusion tube 18, the second liquid
Also perfusion tube 18 is connected between pump 10 and second depressurized concentration tower 3, level-one is concentrated under reduced pressure in tower 2 in level-one by the second liquid pump 10
The waste water of concentrate is pumped into second depressurized concentration tower 3 through perfusion tube 18, is equipped between the second liquid pump 10 and second depressurized concentration tower 3
The side of second vapour compression machine 11, the second vapour compression machine 11 is equipped with the second reboiler 12, the second vapour compression machine 11 and one
It is connected with appendix 19 between grade reduced pressure tower 2, is also connected between the second vapour compression machine 11 and the second reboiler 12 defeated
Level-one can be concentrated under reduced pressure water vapor pressure caused by water removal in tower 2 and contractd through appendix by tracheae 19, the second vapour compression machine 11
19 are discharged into the second reboiler 12, to be 12 heat supply of the second reboiler, between the second reboiler 12 and second depressurized concentration tower 3
Be connected with connecting tube 21, the waste water in second depressurized concentration tower 3 can by connecting tube 21 enter the second reboiler 12 in, in it by
It being returned in second depressurized concentration tower 3 after heat, waste water can be removed a part of water and carry out second level concentrate by second depressurized concentration tower 3,
Return pipe 20 is connected between second reboiler 12 and catch basin 6, condensed water caused by the vapor of heat supply is through return pipe 20
It passes back into catch basin 6.
The side of second depressurized concentration tower 3 is equipped with vacuum rectification tower 4, between second depressurized concentration tower 3 and vacuum rectification tower 4
Equipped with third liquid pump 13, perfusion tube 18, third liquid pump 13 and decompression are connected between third liquid pump 13 and second depressurized concentration tower 3
Also be connected with perfusion tube 18 between rectifying column 4, third liquid pump 13 by second depressurized concentration tower 3 the waste water of second level concentrate through defeated
Liquid pipe 18 is pumped into vacuum rectification tower 4, and third vapour compression machine 14, third are equipped between third liquid pump 13 and vacuum rectification tower 4
The side of vapour compression machine 14 is equipped with third reboiler 15, connects between third vapour compression machine 14 and second depressurized concentration tower 3
There is appendix 19, appendix 19, third vapour compression machine are also connected between third vapour compression machine 14 and third reboiler 15
14 can will be removed water in second depressurized concentration tower 3 caused by water vapor pressure contract and be discharged into third reboiler 15 through appendix 19,
To be 15 heat supply of third reboiler, connecting tube 21, vacuum rectification tower are connected between third reboiler 15 and vacuum rectification tower 4
Waste water in 4 can be entered in third reboiler 15 by connecting tube 21, be returned in vacuum rectification tower 4 after being heated in it, decompression essence
Waste water progress rectifying can be connected with back to obtain the DMF steam of high-purity by evaporating tower 4 between third reboiler 15 and catch basin 6
Flow tube 20, condensed water caused by the vapor of heat supply pass back into catch basin 6 through return pipe 20.
The side of vacuum rectification tower 4 is equipped with DMF storage tank 5, and condenser 16 is equipped between vacuum rectification tower 4 and DMF storage tank 5,
Condenser 16 condenses the obtained DMF steam of rectifying in vacuum rectification tower 4, so that it becomes liquid DMF, condenser 16
Side is equipped with the 4th liquid pump 17, and appendix 19, condenser 16 and the 4th liquid pump are connected between condenser 16 and vacuum rectification tower 4
It is connected with perfusion tube 18 between 17, is also connected with perfusion tube 18 between the 4th liquid pump 17 and DMF storage tank 5, the 4th liquid pump 17 is by liquid
State DMF is pumped into DMF storage tank 5 through perfusion tube 18, and is stored.
First liquid pump 7 and level-one, which are concentrated under reduced pressure between tower 2, is equipped with the first vapour compression machine 8, and the one of the first vapour compression machine 8
Side is equipped with the first reboiler 9, and appendix 19, the first both vapor compression are connected between the first vapour compression machine 8 and vacuum rectification tower 4
Also appendix 19 is connected between machine 8 and the first reboiler 9, the first vapour compression machine 8 can be produced rectifying in vacuum rectification tower 4
Raw water vapor pressure contracts to be discharged into the first reboiler 9 through appendix 19, to be 9 heat supply of the first reboiler, level-one decompression is dense
Waste water in contracting tower 2 can be entered in the first reboiler 9 by connecting tube 21, returned to level-one after being heated in it and be concentrated under reduced pressure in tower 2,
First reboiler 9 and level-one are concentrated under reduced pressure between tower 2 and are connected with connecting tube 21, are connected between the first reboiler 9 and catch basin 6
Return pipe 20, the water outlet of return pipe 20 are run through the top of catch basin 6 and are inserted into the inner, condensation caused by the vapor of heat supply
Water passes back into catch basin 6 through return pipe 20.
The working principle of the utility model：When handling waste water, wastewater storage tank 1 is included DMF waste water through being infused by the first liquid pump 7
Pipe 18 is pumped into level-one and is concentrated under reduced pressure in tower 2, and tower 2 is concentrated under reduced pressure by conduction oil heat supply in level-one, can will contain DMF waste water and remove a part
Water simultaneously carries out level-one concentrate, and the second liquid pump 10 is by the waste water of level-one concentrate is pumped into through perfusion tube 18 in level-one reduced pressure tower 2
In second depressurized concentration tower 3, the second vapour compression machine 11 level-one, which can be concentrated under reduced pressure, in tower 2 removes water generated vapor compression
And be discharged into the second reboiler 12 through appendix 19, thus be 12 heat supply of the second reboiler, the waste water in second depressurized concentration tower 3
It can be entered in the second reboiler 12 by connecting tube 21, be returned in second depressurized concentration tower 3 after being heated in it, second depressurized concentration
Waste water can be removed a part of water and carry out second level concentrate by tower 3, and third liquid pump 13 is by second level concentrate in second depressurized concentration tower 3
Waste water through perfusion tube 18 be pumped into vacuum rectification tower 4 in, third vapour compression machine 14 can will remove water institute in second depressurized concentration tower 3
The water vapor pressure of generation contracts to be discharged into third reboiler 15 through appendix 19, to be 15 heat supply of third reboiler, decompression essence
Evaporating the waste water in tower 4 can be entered in third reboiler 15 by connecting tube 21, returned in vacuum rectification tower 4, subtracted after being heated in it
Press rectifying column 4 that can carry out rectifying to waste water, to obtain the DMF steam of high-purity, condenser 16 is to rectifying institute in vacuum rectification tower 4
Obtained DMF steam is condensed, so that it becomes liquid DMF, liquid DMF is pumped into DMF storage through perfusion tube 18 by the 4th liquid pump 17
It in tank 5, and stores, the first vapour compression machine 8 can contract water vapor pressure caused by rectifying in vacuum rectification tower 4 through defeated
Tracheae 19 is discharged into the first reboiler 9, to be 9 heat supply of the first reboiler, the waste water that level-one is concentrated under reduced pressure in tower 2 can be by connecting
Pipe 21 enters in the first reboiler 9, returns to level-one after being heated in it and is concentrated under reduced pressure in tower 2, tower 2 one is concentrated under reduced pressure in such level-one
Without conduction oil heat supply in fixing time, energy consumption is substantially reduced, condensed water caused by the vapor of heat supply flows back through return pipe 20
Enter in catch basin 6.
Basic principles, main features, and advantages of the present invention has been shown and described above.Current row
The technical staff of industry is described in above embodiments and description it should be appreciated that the present utility model is not limited to the above embodiments
Be only the utility model preference, be not intended to limit the utility model, do not departing from the spirit and scope of the utility model
Under the premise of, the utility model also has various changes and improvements, these changes and improvements both fall within claimed it is practical
In novel range.The protection scope of the present invention is defined by the appended claims and their equivalents.
Claims (10)
1. the three-tower rectification recyclable device of waste water containing DMF, including wastewater storage tank (1) and catch basin (6), it is characterised in that：It is described useless
The side of water storage tank (1) is equipped with level-one and tower (2) is concentrated under reduced pressure, and the side that tower (2) are concentrated under reduced pressure in the level-one is equipped with second depressurized
The side of concentration tower (3), the second depressurized concentration tower (3) is equipped with vacuum rectification tower (4), and the one of the vacuum rectification tower (4)
Side is equipped with DMF storage tank (5), and the wastewater storage tank (1) and the level-one are concentrated under reduced pressure between tower (2) and are equipped with the first liquid pump (7), institute
It states level-one to be concentrated under reduced pressure equipped with the second liquid pump (10) between tower (2) and the second depressurized concentration tower (3), the second depressurized is dense
Third liquid pump (13) are equipped between contracting tower (3) and the vacuum rectification tower (4).
2. the three-tower rectification of waste water containing DMF recyclable device according to claim 1, it is characterised in that：The wastewater storage tank (1)
It is connected with perfusion tube (18) between first liquid pump (7), tower (2) are concentrated under reduced pressure in first liquid pump (7) and the level-one
Between be also connected with perfusion tube (18).
3. the three-tower rectification of waste water containing DMF recyclable device according to claim 1, it is characterised in that：First liquid pump (7)
It is concentrated under reduced pressure between tower (2) with the level-one and is equipped with the first vapour compression machine (8), the side of first vapour compression machine (8)
Equipped with the first reboiler (9).
4. the three-tower rectification of waste water containing DMF recyclable device according to claim 1, it is characterised in that：Second liquid pump
(10) it is concentrated under reduced pressure between tower (2) and is connected with perfusion tube (18) with the level-one, second liquid pump (10) subtracts with the second level
It is also connected with perfusion tube (18) between pressure concentration tower (3), between second liquid pump (10) and the second depressurized concentration tower (3)
Equipped with the second vapour compression machine (11), the side of second vapour compression machine (11) is equipped with the second reboiler (12).
5. the three-tower rectification of waste water containing DMF recyclable device according to claim 1, it is characterised in that：The third liquid pump
(13) it is connected between the second depressurized concentration tower (3) perfusion tube (18), the third liquid pump (13) and decompression essence
It evaporates and is also connected between tower (4) perfusion tube (18), third is equipped between the third liquid pump (13) and the vacuum rectification tower (4)
The side of vapour compression machine (14), the third vapour compression machine (14) is equipped with third reboiler (15).
6. the three-tower rectification of waste water containing DMF recyclable device according to claim 1, it is characterised in that：The vacuum rectification tower
(4) condenser (16) are equipped between the DMF storage tank (5), the side of the condenser (16) is equipped with the 4th liquid pump (17).
7. the three-tower rectification of waste water containing DMF recyclable device according to claim 3, it is characterised in that：First vapour pressure
It is connected between contracting machine (8) and the vacuum rectification tower (4) appendix (19), first vapour compression machine (8) and described the
Also be connected between one reboiler (9) appendix (19), first reboiler (9) and the level-one be concentrated under reduced pressure tower (2) it
Between be connected with connecting tube (21), be connected between first reboiler (9) and the catch basin (6) return pipe (20), it is described
The water outlet of return pipe (20) is run through the top of the catch basin (6) and is inserted into the inner.
8. the three-tower rectification of waste water containing DMF recyclable device according to claim 4, it is characterised in that：Second vapour pressure
Contracting machine (11) and the level-one are concentrated under reduced pressure between tower (2) and are connected with appendix (19), second vapour compression machine (11) with
It is also connected with appendix (19) between second reboiler (12), second reboiler (12) and the second depressurized are concentrated
It is connected between tower (3) connecting tube (21), is connected with return pipe between second reboiler (12) and the catch basin (6)
(20)。
9. the three-tower rectification of waste water containing DMF recyclable device according to claim 5, it is characterised in that：The third vapour pressure
Be connected between contracting machine (14) and the second depressurized concentration tower (3) appendix (19), the third vapour compression machine (14) with
It is also connected with appendix (19) between the third reboiler (15), the third reboiler (15) and the vacuum rectification tower
(4) it is connected between connecting tube (21), is connected with return pipe between the third reboiler (15) and the catch basin (6)
(20)。
10. the three-tower rectification of waste water containing DMF recyclable device according to claim 6, it is characterised in that：The condenser (16)
It is connected between the vacuum rectification tower (4) appendix (19), between the condenser (16) and the 4th liquid pump (17)
It is connected with perfusion tube (18), is also connected with perfusion tube (18) between the 4th liquid pump (17) and the DMF storage tank (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820243205.6U CN208104265U (en) | 2018-02-11 | 2018-02-11 | The three-tower rectification recyclable device of waste water containing DMF |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820243205.6U CN208104265U (en) | 2018-02-11 | 2018-02-11 | The three-tower rectification recyclable device of waste water containing DMF |
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| Publication Number | Publication Date |
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| CN208104265U true CN208104265U (en) | 2018-11-16 |
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ID=64124119
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114249480A (en) * | 2021-12-25 | 2022-03-29 | 江苏同禾药业有限公司 | Method for treating production wastewater of 6, 8-dichloro ethyl caprylate |
-
2018
- 2018-02-11 CN CN201820243205.6U patent/CN208104265U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114249480A (en) * | 2021-12-25 | 2022-03-29 | 江苏同禾药业有限公司 | Method for treating production wastewater of 6, 8-dichloro ethyl caprylate |
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