CN206285507U - A kind of high-efficiency evaporator refined for adiponitrile - Google Patents
A kind of high-efficiency evaporator refined for adiponitrile Download PDFInfo
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- CN206285507U CN206285507U CN201621216940.5U CN201621216940U CN206285507U CN 206285507 U CN206285507 U CN 206285507U CN 201621216940 U CN201621216940 U CN 201621216940U CN 206285507 U CN206285507 U CN 206285507U
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- Prior art keywords
- adiponitrile
- distribution
- section
- unit
- evaporator
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Abstract
High-efficiency evaporator of the present utility model employs the efficient distribution measure that once distribution and quadratic distribution are combined in distribution section, so as to ensure that abundant distribution of the weight raffinate in bringing-up section；Efficient collection measure is employed in bringing-up section outlet, the back-mixing of weight raffinate is effectively prevented；Foam removal structure is employed in segregation section, liquid entrainment is prevented；In addition, being designed to of whole evaporator ensure that equipment can be operated under condition of high vacuum degree, and the high-efficiency evaporator for being used is not related to drive disk assembly, is static equipment, so as to reduce the possibility from drive disk assembly gas leakage, and then ensure that the condition of high vacuum degree of evaporator.
Description
Technical field
The utility model belongs to chemical production technology technical field, and in particular to a kind of efficient steaming refined for adiponitrile
Hair device.
Background technology
Adiponitrile (ADN) is a kind of oily liquids of water white transparency, be mainly used in reduction generation hexamethylene diamine, hexamethylene diamine and oneself
There is neutralization reaction generation nylon salt in diacid, this is adiponitrile industrial use most important so far.Adiponitrile also can use
In rocket fuel, electroplating industry, detergent additive and agrochemical fermentation.Current China adiponitrile relies primarily on import, with
The fast development of China's nylon66 fiber industry in recent years, the demand of adiponitrile gradually increases, but as in generation nylon salt
The important source material of mesosome hexamethylene diamine, domestic enterprise there is no production capacity to be completely dependent on import.Therefore, the state of adiponitrile production technology
Development of the productization to China's nylon66 fiber industry has vital meaning.In the technique that allyl acetonitrile hydrocyanation produces adiponitrile
In, the step cyanogenation of adiponitrile two can produce a small amount of excessively high viscosity of cyaniding, high-melting-point weight raffinate, and how high efficiency is residual from weight
Adiponitrile product is separated and recovered out in liquid, prevents weight raffinate coking occur during reclaiming adiponitrile from weight raffinate, be restriction
The key factor of allyl acetonitrile hydrocyanation Adiponitrile technique.This patent combines new and effective evaporator process using rectification process
The reclaimer operation to adiponitrile is realized, additionally, by the optimization to recovery process, can be under various different weight raffinate compositions
That realizes adiponitrile efficiently separates recovery.
The content of the invention
The purpose of this utility model be provide it is a kind of for adiponitrile refine high-efficiency evaporator, equipment body include by
Under supreme distribution section, bringing-up section and the segregation section being sequentially connected with；
The distribution section is provided with material liquid import, and a distribution unit and quadratic distribution unit are provided with the distribution section；
Distribution unit includes the convex housing with material liquid inlet communication, and the convex closure periphery is provided with equally distributed
Gas via-hole, the quadratic distribution unit includes being provided with the guide shell of some perforations；
Wherein, the gas via-hole is preferably bar hole, and the bar hole is circumferentially distributed in 360 ° of the convex closure periphery,
Two neighboring bar shaped pitch of holes 2~12mm, 3~8mm of aperture；
Wherein, the preferred structure of the guide shell includes chassis and some tubules being fixedly arranged on the chassis, described to lead
A diameter of 15~25mm of flow cartridge, the tubule top is provided with perforation, 1~3mm of the perforation diameter；
The segregation section top is provided with adiponitrile gas vent, and its underpart is provided with weight raffinate outlet, is internally provided with heating
Unit and collector unit, the collector unit include that liquid collects baffle plate and collects baffle plate ambient gas positioned at the liquid and lead to
Road；Preferably, it is umbrella-shaped structure that wherein liquid collects baffle plate, and the gas passage is some siphunculus.
In certain embodiments, the heating unit includes the heating coil being fixedly arranged in the segregation section inner walls.
In certain embodiments, the segregation section is additionally provided with dispersal unit, and the dispersal unit is dual-layered baffle plate, the bilayer
Perforate on baffle plate is shifted to install.
In certain embodiments, the segregation section is additionally provided with foam removal unit, and the foam removal unit includes packing layer and is located at
Double-deck silk screen in described filler layer, the silk screen is made up of stainless steel metal fibre silk.
In certain embodiments, the segregation section is additionally provided with spray unit, and the spray unit includes some parallel settings
Shower and positioned at it is described spray pipe end shower nozzle.
In certain embodiments, the heating unit includes heating coil and after-heater, and the heating coil is fixed
In in the segregation section inner walls, the after-heater is located at the double-deck silk screen top.
In certain embodiments, benefit nitrogen mouthful is additionally provided with, the benefit nitrogen mouthful is located at the segregation section housing upper.
The utility model also protect it is a kind of carry out the refined technique of adiponitrile using above-mentioned high-efficiency evaporator, specific steps are such as
Under：The thick cyanating solution come by the step cyaniding of adiponitrile two carries out the initial gross separation of adiponitrile and heavy constituent, tower top by rectifying column
Adiponitrile carry out refining and edulcoration into subsequent handling, the heavy raffinate of bottom of towe enters the high-efficiency evaporating after being filtered through coarse filtration equipment
Device carries out adiponitrile and weight raffinate is efficiently separated, and separating obtained adiponitrile enters subsequent handling refining and edulcoration, gained weight raffinate
Waste liquid enters weight residual liquid tank.
Wherein, at 120~170 DEG C, operating pressure is controlled in -95kPag~120kPag the control of rectifying column operation temperature.
Wherein, the separation of adiponitrile and weight raffinate is realized in the technique using high-efficiency evaporator series connection described in N platforms, wherein 1
≤ N≤6,140~190 DEG C of evaporator operation temperature, operating pressure -99.9kPag~110kPag.
The utility model has the advantages that：The high-efficiency evaporator employs what once distribution and quadratic distribution were combined in distribution section
Efficiently distribution measure, so as to ensure that abundant distribution of the weight raffinate in bringing-up section；Employ efficiently to collect in bringing-up section outlet and arrange
Apply, be effectively prevented the back-mixing of weight raffinate；Foam removal structure is employed in segregation section, liquid entrainment is prevented；In addition, whole evaporation
Being designed to of device ensure that equipment can be operated under condition of high vacuum degree, and the high-efficiency evaporator for being used is not related to driving section
Part, is static equipment, so as to reduce the possibility from drive disk assembly gas leakage, and then ensure that the condition of high vacuum degree of evaporator.
Brief description of the drawings
Fig. 1 is the process chart that the utility model adiponitrile is refined；
Fig. 2 is the internal structure schematic diagram of the utility model high-efficiency evaporator；
Fig. 3 is the structural representation of distribution section in the utility model high-efficiency evaporator；
Fig. 4 is the structural representation of segregation section in the utility model high-efficiency evaporator.
In figure：A, distribution section, B, bringing-up section, C, segregation section, A1, material liquid import, C1, adiponitrile gas vent, C2, benefit
Nitrogen mouthful, 1, distribution unit, 11, convex housing, 12, bar hole, 2, quadratic distribution unit, 21, chassis, 22, tubule,
23rd, perforation, 3, collector unit, 31, liquid collect baffle plate, 32, siphunculus, 4, dispersal unit, 41, filter plate, 42, filter opening, 5, foam removal
Unit, 51, packing layer, 52, silk screen, 6, spray unit, 61, shower, 62, shower nozzle, 7, after-heater.
Specific embodiment
In order that technological means, creation characteristic, reached purpose and effect that the utility model is realized are easy to understand, under
It is described further in face of specific embodiment of the present utility model, but does not limit protection domain of the present utility model.
First against concrete operations flow of the present utility model, it is illustrated with reference to accompanying drawing：
As in Figure 2-4, a kind of high-efficiency evaporator refined for adiponitrile, equipment body includes sequentially connecting from the bottom to top
Distribution section A, the bringing-up section B and segregation section C for connecing, the distribution section are intersegmental with the heating, and bringing-up section with separate it is intersegmental
For flange is connected；
The distribution section A bottoms are provided with material liquid import A1, and a distribution unit 1 and secondary is provided with the distribution section A
Distribution unit 2 a, distribution unit 1 includes the convex housing 11 with material liquid inlet communication, outside the convex housing 11
Enclose and be provided with equally distributed bar hole 12, the bar hole 12 is circumferentially distributed in 360 ° of the convex closure periphery, two neighboring bar
Shape pitch of holes 10mm, aperture 5mm；The quadratic distribution unit 2 is a guide shell, and the guide shell includes chassis 21 and is fixedly arranged on institute
The some tubules 22 on chassis are stated, a diameter of 19mm of guide shell, the tubule top is provided with perforation 23, and the aperture of the perforation is
2mm；
The segregation section C tops are provided with adiponitrile gas vent C1 and mend nitrogen mouthful C2, and its underpart is provided with weight raffinate outlet
C3, is internally provided with collector unit 3, dispersal unit 4, foam removal unit 5, spray unit 6 and the reheating for setting from the bottom to top
Device 7, in addition, being additionally provided with heating coil in the segregation section C inner walls；The collector unit 3 includes that umbrella liquid collects gear
The siphunculus 32 that plate 31 and the supplied gas around liquid collection baffle plate 31 pass through；The dispersal unit 4 is dual-layered baffle plate
41, the perforate 42 on the dual-layered baffle plate 41 is shifted to install；The foam removal unit 5 includes packing layer 51 and positioned at described filler layer 51
On double-deck silk screen 52, the silk screen 52 by stainless steel metal fibre silk be made；The spray unit 6 includes some parallel settings
Shower 61 and positioned at it is described spray pipe end shower nozzle 62.
Technological process of refined of the adiponitrile in above-mentioned high-efficiency evaporator is as follows：Material liquid containing adiponitrile is via original
Liquor inlet enters distribution section, and pre-dispersed formation shallow bid liquid stream is carried out in a distribution unit, and depth is carried out in quadratic distribution unit
Degree dispersion forms uniform thread, obtains gas-liquid mixture into bringing-up section heating afterwards, and the gas-liquid mixture is subsequently into separation
Section, liquid therein is assembled in collector unit, and by weight raffinate outlet discharge evaporator, gas therein is single via collecting
Unit, dispersal unit, foam removal unit and after-heater, are finally discharged by adiponitrile gas vent.
The specific subtractive process of above-mentioned adiponitrile is as follows, and the material liquid containing adiponitrile enters convex via material liquid import
Housing, is sprayed by the bar hole on convex housing enter in tubule afterwards, is sprayed by the perforation at the top of tubule enter heating afterwards
Duan Jiare, the gas-liquid mixture formed in bringing-up section obtains gas-liquid separation in collector unit, and liquid therein is received in umbrella liquid
Ji Dangbanchu is gathered, and by weight raffinate outlet discharge evaporator, gas therein rises via siphunculus, afterwards by welding
In the dual-layered baffle plate of segregation section liquid is further separated to go forward side by side the redistribution of promoting the circulation of qi body, afterwards by after packing layer, double-deck silk screen most
Discharged by adiponitrile gas vent eventually；
It should be noted that：(1) in the subtractive process of above-mentioned adiponitrile, separative element is by heating coil and after-heater
Heat supply, wherein heating coil are used to prevent adiponitrile gas in gas-liquid separation section from condensing, and after-heater can be received to foam removal unit
The air foam of collection is heated, and will pass through adiponitrile gas vent after the wherein micro adiponitrile gasification completely for failing to be gasified totally
Discharge；(2) in the gap of subtractive process or subtractive process, spray unit can spray high-temperature solvent and be used to clear up and adhere to foam removal
High viscosity weight raffinate on unit and equipment inner wall, prevents weight raffinate coking；(3) mending nitrogen mouthful is used for vacuum breaker and parking
Shi Jinhang system protections are used.
As shown in figure 1, a kind of carry out the refined technique of adiponitrile using above-mentioned high-efficiency evaporator, comprise the following steps that：By
The step cyaniding of adiponitrile two and the thick cyanating solution that comes carry out the initial gross separation of adiponitrile and heavy constituent by rectifying column, tower top oneself two
Nitrile carries out refining and edulcoration into subsequent handling, and the heavy raffinate of bottom of towe is carried out after being filtered through coarse filtration equipment into the high-efficiency evaporator
Adiponitrile is efficiently separated with weight raffinate, and separating obtained adiponitrile enters subsequent handling refining and edulcoration, and gained weight raffinate waste liquid enters
Enter weight residual liquid tank.
Wherein, at 120~170 DEG C, operating pressure is controlled in -95kPag~120kPag the control of rectifying column operation temperature.
Wherein, the separation of adiponitrile and weight raffinate is realized in the technique using high-efficiency evaporator series connection described in N platforms, wherein 1
≤ N≤6,140~190 DEG C of evaporator operation temperature, operating pressure -99.9kPag~110kPag effectively prevents weight in evaporator
The coking of raffinate.
Embodiment 1
Thick cyanating solution from the step cyaniding operation of adiponitrile two enters rectifying column with 50332kg/h, by percentage to the quality,
Containing 75~90% adiponitrile in tower top, by-products content 10~25%, weight raffinate content 0%, bottom of towe weight raffinate content
100%.From rectifier bottoms heavy raffinate out through coarse filtration equipment separating solid impurities, subsequently into high-efficiency evaporator；Efficiently
Evaporator operation temperature control at 140~190 DEG C, operating pressure control in -99.9kPag~110kPag, it is separating obtained oneself two
Nitrile is recycled from evaporator top, and gained weight raffinate waste liquid enters weight residual liquid tank；
The adiponitrile 6254kg/h of 100% purity is reclaimed by sampling analysis measuring evaporator top；The base of evaporator is obtained
To weight raffinate waste liquid 1563kg/h.
Embodiment 2
Thick cyanating solution from the step cyaniding operation of adiponitrile two enters rectifying column with 50332kg/h, by percentage to the quality,
Containing 65~80% adiponitrile in tower top, by-products content 20~35%, weight raffinate content 0%, bottom of towe weight raffinate content
100%.From rectifier bottoms heavy raffinate out through coarse filtration equipment separating solid impurities, subsequently into by the efficient of two series connection
The high-efficiency evaporating system that evaporator is formed；Two high-efficiency evaporator operation temperatures are controlled in 145~170 DEG C, operating pressure control
System is recycled in -99.9kPag~110kPag, separating obtained adiponitrile from evaporator top, and gained weight raffinate waste liquid enters
Weight residual liquid tank；
The adiponitrile 5248kg/h of 100% purity is reclaimed by last evaporator top of sampling analysis measuring；The evaporation
Device bottom obtains weight raffinate waste liquid 2632kg/h.
Embodiment 3
Thick cyanating solution from the step cyaniding operation of adiponitrile two enters rectifying column with 50332kg/h, by percentage to the quality,
Containing 65~80% adiponitrile in tower top, by-products content 20~35%, weight raffinate content 0%, bottom of towe weight raffinate content
100%.From rectifier bottoms heavy raffinate out through coarse filtration equipment separating solid impurities, subsequently into by the efficient of three series connection
The high-efficiency evaporating system that evaporator is formed；Three high-efficiency evaporator operation temperatures are controlled in 145~170 DEG C, operating pressure control
System is recycled in -99.9kPag~110kPag, separating obtained adiponitrile from evaporator top, and gained weight raffinate waste liquid enters
Weight residual liquid tank；
The adiponitrile 5431kg/h of 100% purity is reclaimed by last evaporator top of sampling analysis measuring；The evaporation
Device bottom obtains weight raffinate waste liquid 2487kg/h.
One embodiment that the utility model is created has been described in detail above, but the content is only new this practicality
The preferred embodiment that type is created, it is impossible to be considered as the practical range for limiting the utility model creation.It is all according to the utility model
Create the impartial change made of application range and improve etc., all should still belong to the utility model creation patent covering scope it
It is interior.
Claims (7)
1. it is a kind of for adiponitrile refine high-efficiency evaporator, it is characterised in that equipment body include be sequentially connected with from the bottom to top
Distribution section, bringing-up section and segregation section；
The distribution pars infrasegmentalis is provided with material liquid import, and a distribution unit and quadratic distribution unit are provided with the distribution section；
Distribution unit includes the convex housing with material liquid inlet communication, and the convex closure periphery is provided with equally distributed
Gas via-hole, the quadratic distribution unit includes being provided with the guide shell of some perforations；
The segregation section top is provided with adiponitrile gas vent, and its underpart is provided with weight raffinate outlet, is internally provided with heating unit
And collector unit, gas passage of the collector unit including liquid collection baffle plate and around liquid collection baffle plate.
2. it is according to claim 1 it is a kind of for adiponitrile refine high-efficiency evaporator, it is characterised in that the heating list
Unit includes the heating coil being fixedly arranged in the segregation section inner walls.
3. it is according to claim 1 it is a kind of for adiponitrile refine high-efficiency evaporator, it is characterised in that the segregation section
Dispersal unit is additionally provided with, the dispersal unit is dual-layered baffle plate, and the perforate on the dual-layered baffle plate is shifted to install.
4. it is according to claim 1 it is a kind of for adiponitrile refine high-efficiency evaporator, it is characterised in that the segregation section
Be additionally provided with foam removal unit, the foam removal unit includes packing layer and the double-deck silk screen in described filler layer, the silk screen by
Stainless steel metal fibre silk is made.
5. it is according to claim 1 it is a kind of for adiponitrile refine high-efficiency evaporator, it is characterised in that the segregation section
Spray unit is additionally provided with, the spray unit includes some parallel arrangement of showers and the spray positioned at the spray pipe end
Head.
6. it is according to claim 4 it is a kind of for adiponitrile refine high-efficiency evaporator, it is characterised in that the heating list
Unit includes heating coil and after-heater, and the heating coil is fixedly arranged in the segregation section inner walls, it is described secondary plus
Hot device is located at the double-deck silk screen top.
7. it is according to claim 1 it is a kind of for adiponitrile refine high-efficiency evaporator, it is characterised in that be additionally provided with benefit nitrogen
Gas port, the benefit nitrogen mouthful is located at the segregation section housing upper.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216940.5U CN206285507U (en) | 2016-11-11 | 2016-11-11 | A kind of high-efficiency evaporator refined for adiponitrile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621216940.5U CN206285507U (en) | 2016-11-11 | 2016-11-11 | A kind of high-efficiency evaporator refined for adiponitrile |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206285507U true CN206285507U (en) | 2017-06-30 |
Family
ID=59099236
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621216940.5U Withdrawn - After Issue CN206285507U (en) | 2016-11-11 | 2016-11-11 | A kind of high-efficiency evaporator refined for adiponitrile |
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| CN (1) | CN206285507U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267864A (en) * | 2016-11-11 | 2017-01-04 | 中国天辰工程有限公司 | A kind of high-efficiency evaporator refined for adiponitrile and adiponitrile process for refining |
| CN108479090A (en) * | 2018-04-03 | 2018-09-04 | 青岛海湾精细化工有限公司 | Acetic acid removal of impurities evaporation equipment in ketene dimer production |
-
2016
- 2016-11-11 CN CN201621216940.5U patent/CN206285507U/en not_active Withdrawn - After Issue
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106267864A (en) * | 2016-11-11 | 2017-01-04 | 中国天辰工程有限公司 | A kind of high-efficiency evaporator refined for adiponitrile and adiponitrile process for refining |
| CN108479090A (en) * | 2018-04-03 | 2018-09-04 | 青岛海湾精细化工有限公司 | Acetic acid removal of impurities evaporation equipment in ketene dimer production |
| CN108479090B (en) * | 2018-04-03 | 2021-04-30 | 青岛海湾精细化工有限公司 | Acetic acid impurity removal evaporation equipment in diketene production |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170630 Effective date of abandoning: 20181127 |
|
| AV01 | Patent right actively abandoned |