CN206204192U - A kind of rectifier unit that rectifying section and stripping section is separate - Google Patents
A kind of rectifier unit that rectifying section and stripping section is separate Download PDFInfo
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- CN206204192U CN206204192U CN201621013910.4U CN201621013910U CN206204192U CN 206204192 U CN206204192 U CN 206204192U CN 201621013910 U CN201621013910 U CN 201621013910U CN 206204192 U CN206204192 U CN 206204192U
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Abstract
A kind of rectifier unit that rectifying section and stripping section is separate, the device includes dehydration workshop section, product purification workshop section, depickling workshop section, process water recycle section；The dehydration workshop section includes dehydration A towers, dehydration B towers, and dehydration A towers are connected with dehydration B towers；The product purification workshop section includes product A towers, product B towers, product purification A towers, product purification B towers, product A towers are connected with dehydration A towers, product A towers are connected with product B towers, product A towers are connected with product purification A towers, product purification A towers are connected with product purification B towers, product purification A towers tower reactor connection depickling workshop section.The advantage of the device is：1) setting height(from bottom) of equipment is reduced；2) energy-conservation；3) suppress target product to decompose；4) secondary pollution is reduced；5) corrosion of equipment is alleviated；6) product yield is high；7) deionized water can be recycled.
Description
Technical field
The utility model is related to a kind of rectifier unit that rectifying section and stripping section is separate, and belong to material isolates and purifies neck
Domain.
Background technology
DMAC/DMF/DMSO (dimethylacetylamide/N, N- dimethyl formyl/dimethyl sulfoxide (DMSO)), can dissolve various chemical combination
Thing, can completely dissolve each other with water, ether, ketone, ester etc., with heat endurance is high, the not low feature of facile hydrolysis, corrosivity, extensive use
In PETROLEUM PROCESSING and organic synthesis industry.By taking DMAC as an example, DMAC is sub- to various kinds of resin, especially polyurethane resin, polyamides
Polyimide resin has good solvability, is mainly used as heat-resisting synthetic fibers, plastic sheeting, coating, medicine, acrylonitrile spinning
Solvent.In organic synthesis, DMAC is fabulous catalyst, can react cyclisation, halogenation, cyaniding, alkylation and dehydrogenation etc. and add
Speed, and primary product yield can be improved.In part medicine and pesticide producing, also can be using DMAC as solvent or co-catalysis
Agent, compared with conventional organic solvents, to the effect of being improved of product quality and yield.But produced during production and application big
Waste water of the amount containing DMAC, directly discharge can cause very big influence to water quality environment, the health of people be endangered, so carrying out DMAC
The recovery and treatment of waste liquid all have critically important meaning for carrying out environmental protection and reducing the aspects such as the production cost of enterprise
Justice.
In traditional handicraft, the removing of moisture can be designed as a tower process, if but moisture is higher in raw material, expect
Qualified DMAC/DMF/DMSO products, it is desirable to whole technique in recovered water timesharing, it is necessary to suitably increase reflux ratio, and water
Than larger, in the case where reflux ratio is increased, energy consumption also can accordingly increase the latent heat of vaporization.
Utility model content
The utility model is in view of the shortcomings of the prior art, there is provided a kind of rectifying dress that rectifying section and stripping section is separate
Put, it is adaptable in the absence of azeotropic or the component of association phenomenon, such as DMF and water, DMAC and water, DMSO and water between two kinds of components
Thing system, and other analog systems separation.
The technical scheme that the utility model solves above-mentioned technical problem is as follows：A kind of essence that rectifying section and stripping section is separate
Distillation unit, the rectifier unit includes dehydration workshop section, product purification workshop section, depickling workshop section, process water recycle section；
The dehydration workshop section includes dehydration A towers, dehydration B towers, the input of the dehydration A column overheads output end and dehydration B towers
End is connected；
The product purification workshop section includes product A towers, product B towers, product purification A towers, product purification B towers, product A tower towers
Top input is connected with dehydration A tower tower reactor output ends, and product A column overheads output end is connected with the input of product B towers, product A
Tower tower reactor output end is connected with the input of product purification A column overheads, the output end and product purification B of product purification A column overheads
The input of tower tower reactor is connected, and product purification A tower tower reactors are connected with raffinate transfer tank.
Further, the depickling workshop section includes neutralizing evaporating kettle and recovery tower, neutralizes evaporating kettle one end and raffinate transfer
Tank is connected, and one end is connected with recovery tower tower reactor, reclaims column overhead and is provided with reflux ratio controller, reflux ratio controller connection raw material storage
Tank.
Further, the dehydration B column overheads are connected with the first return tank, and the first return tank other end Joining Technology water is returned
Knock off section, the product B column overheads are connected with the second return tank, the second return tank other end Joining Technology Water Sproading workshop section, institute
State product purification B column overheads and be connected with the 3rd return tank.
Further, the dehydration A column overheads are provided with the first condenser, and tower reactor is provided with the first reboiler, the product A towers
Tower reactor is provided with coupling reboiler, and the 3rd reboiler is provided between the product purification A towers tower reactor and raffinate transfer tank.
Further, the output end of the product purification B towers is connected with product pans, and product purification B towers and product connect
By being provided with cooler between tank.
Further, the neutralization evaporating kettle is provided with preparation kettle, and alkali lye is housed in preparation kettle.
Further, it is provided with the 4th condenser between the recovery column overhead and reflux ratio controller.
Further, the process water recycle section includes intermediate buffer tank and vapour dike tower, intermediate buffer tank and first time
Stream tank, the second return tank are respectively connected with, and vapour dike column overhead is provided with segregator, and vapour dike tower tower reactor is provided with recovery deionized water buffering
Tank.
Further, be provided with the second condenser between the product B towers and the second return tank, the product purification B towers and
The 3rd condenser is provided between 3rd return tank.
Further, the return tank is provided with exhaust gas cooler.
Used as the further improvement of the program, the utility model provides a kind of rectifying that rectifying section and stripping section is separate
Technique, including dewatering process and product purification technique, the method comprise the following steps：
(1) waste liquid containing target product is preheated, is fed by being dehydrated A towers top；
(2) material in thermal dehydration A towers, the steam for rising to dehydration A column overheads enters dehydration B towers, rises to dehydration B towers
The steam of tower top is condensed into and enters the first return tank after liquid, a part of liquid pump water B towers, a part back off in the first return tank
Liquid is produced to technique water recovery process；
(3) dehydration A towers kettle material enters product A towers, and material in heating product A towers rises to the steaming of product A column overheads
Vapour enters product B towers, and the steam for rising to product B column overheads is condensed into and enters the second return tank after liquid, in the second return tank
A part of liquid blowback product B towers, a part of liquid is produced to technique water recovery process；
(4) product A towers kettle material enters product purification A towers, and material in heating product purification A towers rises to product essence
The steam of A column overheads processed enters product purification B towers, and product purification B column overhead steam enters the 3rd return tank after being condensed into liquid,
A part of liquid blowback product purification B towers in 3rd return tank, outside a part of liquid extraction to battery limit (BL)；
(5) from product purification B tower side take-off liquid phase target products.
Wherein, dehydration B tower kettle materials flow back into dehydration A towers, and product B tower kettle materials flow back into product A towers, product essence
B towers kettle material processed flows back into product purification A towers.
Further, product purification A towers tower reactor product waste liquid of the extraction containing acetic acid is carried out into deacidifying process, side stirring contains
The product waste liquid side of acetic acid adds alkaline solution, after being in neutrality to solution, carries out vacuumizing, and heated material rises to recovery
After the steam of column overhead is condensed into liquid, by the effect of reflux ratio controller, a part passes back into recovery column overhead, a part
Liquid is produced to raw material storage tank.
Further, in technique water recovery process, a part of liquid in the first return tank, the second return tank enters stripping
Tower, saturated steam is passed through to stripper bottom liquid, rises to the steam of stripper overhead through segregator gas of the extraction containing amine
Phase tail gas enters exhaust treatment system, and the recovery deionized water of stripper bottom of towe extraction returns to reaction workshop section and uses.
Wherein, after solution is in neutrality and before heated material, vacuum pumping is carried out.
Wherein, the alkaline solution be sodium carbonate, one or two the mixed solution in sodium acid carbonate.
The beneficial effects of the utility model are：
1) setting height(from bottom) of equipment is reduced
Every tower is respectively divided into A, B tower by the present apparatus, i.e., the every rectifying section of tower and profit reduction and reserving section are installed separately, reduce and set
Standby total setting height(from bottom), it is adaptable to the restricted occasion of setting height(from bottom).
2) energy-conservation
This covering device employs two tower economic benefits and social benefits list rectification under vacuum systems, is used for the overhead vapours of dehydrating tower giving in systems
The evaporator heating of evaporator, while being equipped with waste heat recovery apparatus, makes device more energy-conservation, its consumption of cooling-water also to reduce,
The characteristics of having fully demonstrated energy-saving.
3) suppress target product to decompose
So that target product is as DMAC as an example, pure DMAC is stable in properties, but the decomposition rate under the situation that Determining Micro Acid, alkali are present
Accelerate, temperature is higher, and decomposition rate is faster.Therefore rectification under vacuum reduction operation temperature can suppress to decompose, and can improve the matter of product
Amount.
4) secondary pollution is reduced
Due to inhibiting the decomposition of target product, therefore overhead water to be reduced containing catabolite, the hair of secondary pollution is reduced
It is raw.
5) corrosion of equipment is alleviated
Catabolite-the acetic acid of the analyte of target product, such as DMAC, is corrosive to equipment, and reducing temperature can mitigate
Corrosion to equipment.
6) product yield is high
From after the collection of the target product containing acid of product tower tower reactor extraction by neutralisation treatment, by the target product in raffinate
Recovery is returned, and improves the comprehensive yield of product.
7) deionized water can be recycled
Water in raw material is generally deionized water, and the deionized water from dehydration column overhead extraction, can after stripper takes off amine
Reaction workshop section is returned to as fresh deionized water to recycle.
Brief description of the drawings
Fig. 1 is dehydration workshop section apparatus structure schematic diagram；
Fig. 2 is purifying products apparatus structure schematic diagram in product purification workshop section；
Fig. 3 is product purification apparatus structure schematic diagram in product purification workshop section；
Fig. 4 is depickling workshop section apparatus structure schematic diagram；
Fig. 5 is process water recycle section apparatus structure schematic diagram.
Wherein, 1, dehydration A towers；2nd, B towers are dehydrated；3rd, the first condenser；4th, the first reboiler；5th, the first return tank；6th, tail
Gas Cooler；7th, product A towers；8th, product B towers；9th, product purification A towers；10th, product purification B towers；11st, reboiler is coupled；12nd,
Two return tanks；13rd, the second condenser；14th, product pans；15th, cooler；16th, the 3rd return tank；17th, the 3rd condenser；
18th, raffinate transfer tank；19th, the 3rd reboiler；20th, evaporating kettle is neutralized；21st, recovery tower；22nd, kettle is prepared；23rd, reflux ratio control
Device；24th, raw material storage tank；25th, the 4th condenser；26th, intermediate buffer tank；27th, vapour dike tower；28th, segregator；29th, deionization is reclaimed
Water surge tank.
Specific embodiment
Principle of the present utility model and feature are described below in conjunction with accompanying drawing, example is served only for explaining this practicality
It is new, it is not intended to limit scope of the present utility model.
A kind of rectifier unit that rectifying section and stripping section is separate, the rectifier unit includes dehydration workshop section, product purification work
Section, depickling workshop section, process water recycle section；
The dehydration workshop section includes dehydration A towers 1, dehydration B towers 2, the input of the tower top output end of dehydration A towers 1 and dehydration B towers 2
End is connected, and the tower top of dehydration A towers 1 is provided with the first condenser 3, and tower reactor is provided with the first reboiler 4, and the tower top of dehydration B towers 2 is connected with first
Return tank 5, the top of the first return tank 5 is provided with exhaust gas cooler 6, the other end Joining Technology Water Sproading workshop section of the first return tank 5；
The product purification workshop section includes product A towers 7, product B towers 8, product purification A towers 9, product purification B towers 10, product
The tower top input of A towers 7 is connected with the tower reactor output end of dehydration A towers 1, the input phase of the tower top output end of product A towers 7 and product B towers 8
Even, the tower reactor of product A towers 7 is provided with coupling reboiler 11, and the tower top of product B towers 8 is connected with the second return tank 12, product B towers 8 and second
The second condenser 13, the other end Joining Technology Water Sproading workshop section of the second return tank 12, the tower of product A towers 7 are provided between return tank 12
Kettle output end is connected with the input of the tower top of product purification A towers 9, the output end and product purification B towers of the tower top of product purification A towers 9
The input of 10 tower reactors is connected, and the output end of the product purification B towers 10 is connected with product pans 14, product purification B towers 10
Cooler 15 is provided with and product pans 14 between, the tower top of product purification B towers 10 is connected with the 3rd return tank 16, product purification B
The 3rd condenser 17 is provided between the return tank 16 of tower 10 and the 3rd, the tower reactor of product purification A towers 9 is connected with raffinate transfer tank 18, produced
The 3rd reboiler 19 is provided between the refined tower reactor of A towers 9 of product and raffinate transfer tank 18；
The depickling workshop section includes neutralizing evaporating kettle 20 and recovery tower 21, neutralizes evaporating kettle 20 and is provided with preparation kettle 22, matches somebody with somebody
Alkali lye is housed in kettle processed 22, is neutralized the one end of evaporating kettle 20 and is connected with raffinate transfer tank 18, one end is connected with the tower reactor of recovery tower 21, returns
Receive the tower top of tower 21 and be provided with reflux ratio controller 23, the connection raw material storage tank 24 of reflux ratio controller 23, the tower top of recovery tower 21 with return
The 4th condenser 25 is provided between flow ratio controllers 23；
The process water recycle section includes intermediate buffer tank 26 and vapour dike tower 27, the return tank of intermediate buffer tank 26 and first
5th, the second return tank 12 is respectively connected with, and the tower top of vapour dike tower 27 is provided with segregator 28, and the tower reactor of vapour dike tower 27 is provided with recovery deionized water
Surge tank 29.
The application method of the device comprises the following steps：
(1) waste liquid containing target product is preheated, is fed by being dehydrated the top of A towers 1；
(2) material in thermal dehydration A towers 1, the steam for rising to the tower top of dehydration A towers 1 enters dehydration B towers 2；The tower of dehydration B towers 2
The steam on top is condensed into and enters the first return tank 5 after liquid, a part of liquid pump water B towers 2, one back off in the first return tank 5
Liquid is divided to produce to technique water recovery process；
(3) kettle material of dehydration A towers 1 enters product A towers 7, and material in heating product A towers 7 rises to the tower top of product A towers 7
Steam enter product B towers 8；The steam of the tower top of product B towers 8 enters the second return tank 12, the second return tank after being condensed into liquid
A part of liquid blowback product B towers 8 in 12, a part of liquid is produced to technique water recovery process；
(4) kettle material of product A towers 7 enters product purification A towers 9, and material in heating product purification A towers 9 rises to product
The steam of the refined tower top of A towers 9 enters product purification B towers 10；The overhead vapours of product purification B towers 10 enters the 3rd after being condensed into liquid
Return tank 16, a part of liquid blowback product purification B towers 10 in the 3rd return tank 16, outside a part of liquid extraction to battery limit (BL)；
(5) from the side take-off liquid phase target product of product purification B towers 10.
Further, the tower reactor of product purification A towers 9 product waste liquid of the extraction containing acetic acid is carried out into deacidifying process, side stirring
Product waste liquid side containing acetic acid adds alkaline solution, is reacted to neutrality completely after acetic acid and alkali lye in material, and startup is taken out
Vacuum system to system vacuum stabilization, then heated material, rise to the tower top of recovery tower 21 steam be condensed into liquid after, lead to
The effect of reflux ratio controller 23 is crossed, a part passes back into the tower top of recovery tower 21, and one produces to raw material storage tank 24 containing liquid.
Further, the tower top of dehydration B towers 2, the steam of the tower top of product B towers 8 are risen to and enters stripper after being condensed into liquid
27 carry out technique Water Sproading, and saturated steam is passed through to the bottom liquid of stripper 27, rise to the steam warp of the tower top of stripper 27
Gas phase tail gas of the extraction containing amine of segregator 28 enters exhaust treatment system, and the recovery deionized water of the bottom of towe of stripper 27 extraction is returned
Reaction workshop section uses.
Wherein, the alkaline solution be sodium carbonate, one or two the mixed solution in sodium acid carbonate.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the utility model, it is all in this practicality
Within new spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in guarantor of the present utility model
Within the scope of shield.
Claims (5)
1. a kind of rectifier unit that rectifying section and stripping section is separate, it is characterised in that：The rectifier unit includes dehydration workshop section, produces
Product refinement, depickling workshop section, process water recycle section；
The dehydration workshop section includes dehydration A towers, dehydration B towers, and dehydration A column overheads output end is connected with the input of dehydration B towers；
The product purification workshop section includes product A towers, product B towers, product purification A towers, product purification B towers, the product A tower towers
Top input is connected with dehydration A tower tower reactor output ends, and product A column overheads output end is connected with the input of product B towers, product A
Tower tower reactor output end is connected with the input of product purification A column overheads, the output end and product purification B of product purification A column overheads
The input of tower tower reactor is connected, and product purification A tower tower reactors are connected with raffinate transfer tank.
2. a kind of rectifier unit that rectifying section and stripping section is separate according to claim 1, it is characterised in that：It is described de-
Sour workshop section includes neutralizing evaporating kettle and recovery tower, neutralizes evaporating kettle one end and is connected with raffinate transfer tank, one end and recovery tower tower reactor
It is connected, reclaims column overhead and be provided with reflux ratio controller, reflux ratio controller connection raw material storage tank.
3. a kind of rectifier unit that rectifying section and stripping section is separate according to claim 1, it is characterised in that：It is described de-
Water B column overheads are connected with the first return tank, the first return tank other end Joining Technology Water Sproading workshop section, the product B column overheads
The second return tank is connected with, the second return tank other end Joining Technology Water Sproading workshop section, the product purification B column overheads are connected with
Second return tank；The dehydration A column overheads are provided with the first condenser, and tower reactor is provided with the first reboiler, and the product A tower tower reactors set
There is coupling reboiler, the 3rd reboiler is provided between the product purification A towers tower reactor and raffinate transfer tank；The product purification B
The output end of tower is connected with product pans, and cooler is provided between product purification B towers and product pans.
4. a kind of rectifier unit that rectifying section and stripping section is separate according to claim 2, it is characterised in that：In described
Preparation kettle is provided with evaporating kettle, alkali lye is housed in preparation kettle；It is provided between the recovery column overhead and reflux ratio controller
4th condenser.
5. a kind of rectifier unit that rectifying section and stripping section is separate according to claim 3, it is characterised in that：The work
Skill Water Sproading workshop section includes intermediate buffer tank and vapour dike tower, and intermediate buffer tank is respectively connected with the first return tank, the second return tank,
Vapour dike column overhead is provided with segregator, and vapour dike tower tower reactor is provided with recovery deionized water surge tank；The product B towers and the second return tank
Between be provided with the second condenser, be provided with the 3rd condenser between the product purification B towers and the 3rd return tank；First backflow
Tank is provided with exhaust gas cooler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013910.4U CN206204192U (en) | 2016-08-31 | 2016-08-31 | A kind of rectifier unit that rectifying section and stripping section is separate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621013910.4U CN206204192U (en) | 2016-08-31 | 2016-08-31 | A kind of rectifier unit that rectifying section and stripping section is separate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206204192U true CN206204192U (en) | 2017-05-31 |
Family
ID=58760519
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621013910.4U Active CN206204192U (en) | 2016-08-31 | 2016-08-31 | A kind of rectifier unit that rectifying section and stripping section is separate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206204192U (en) |
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2016
- 2016-08-31 CN CN201621013910.4U patent/CN206204192U/en active Active
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