CN204958761U - Device of cinnamic acid separation benzaldehyde - Google Patents
Device of cinnamic acid separation benzaldehyde Download PDFInfo
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- CN204958761U CN204958761U CN201520630973.3U CN201520630973U CN204958761U CN 204958761 U CN204958761 U CN 204958761U CN 201520630973 U CN201520630973 U CN 201520630973U CN 204958761 U CN204958761 U CN 204958761U
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- rectifying tower
- rectifying column
- reboiler
- phase splitter
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Abstract
The utility model relates to a device of cinnamic acid separation benzaldehyde belongs to chemical industry equipment technical field. The device includes scraper blade evaporimeter, rectifying column, condenser, phase splitter, reboiler, leftover bits and pieces cauldron, benzaldehyde storage tank, the bottom discharge mouth and the leftover bits and pieces cauldron top access connection of scraper blade evaporimeter are connected with rectifying column middle part steam inlet to the top gas outlet of scraper blade evaporimeter, the rectifying column top goes out the steam ports and is connected with the condenser steam inlet, the condenser liquid outlet is connected with the phase splitter inlet, being connected respectively with rectifying column upper portion and benzaldehyde storage tank of phase splitter, rectifying column bottom liquid outlet inlet bottom the reboiler is connected, reboiler top gas outlet is connected with rectifying column lower part air inlet, rectifying column bottom discharge mouth is connected with another cinnamic acid finished product rectification system feed inlet. The utility model discloses the device makes between each component of material and the polymerization of self significantly reduces, has increased the rate of recovery of product, and product quality is also showing and improves.
Description
Technical field
The utility model relates to a kind of chemical industry equipment, is specifically related to a kind of device of phenylacrolein Separation of Benzene formaldehyde.
Background technology
Process for refining many employings batch fractionating technical matters of current phenylacrolein, specifically put into still kettle by disposable for phenylacrolein crude product, according to low-boiling point materials such as the different Separation of Benzene formaldehyde of the boiling point of each component, redistillation subsequently goes out finished product phenylacrolein, and high boiling substance and polymkeric substance become tankage.Phenyl aldehyde, phenylacrolein and 5-phenyl 2 in batch distillation process, the rare aldehyde of 4-penta 2 etc. is at high temperature polymerized each other, and self is also easily polymerized, consor becomes high boiling tankage, product yield is reduced greatly, and the finished product phenylacrolein produced in batch distillation process still has a certain amount of low-boiling products as phenyl aldehyde, phenylcarbinol, cis phenylacrolein etc., and impurity produces mixes in phenylacrolein, greatly have impact on the purity of finished product.
Utility model content
The purpose of this utility model is to overcome the above-mentioned defect existed in prior art, provides a kind of device of phenylacrolein Separation of Benzene formaldehyde.
The device of a kind of phenylacrolein Separation of Benzene formaldehyde that the utility model proposes, comprises scraper evaporator, rectifying tower, condenser, phase splitter, reboiler, leftover bits and pieces still, phenyl aldehyde storage tank; The top gas outlet of described scraper evaporator is connected with steam inlet in the middle part of rectifying tower, and the bottom discharge mouth of described scraper evaporator is connected with leftover bits and pieces still top inlet; Described rectifying tower top steam outlet is connected with condenser steam inlet; Described condenser liquid outlet is connected with phase splitter fluid inlet; The import that refluxes of one liquid outlet and the rectifier of described phase splitter is connected, and another liquid outlet of phase splitter is connected with phenyl aldehyde storage tank; Described rectifier bottoms liquid outlet is connected with reboiler bottom liquid inlet mouth; Air outlet, described reboiler top is connected with rectifying tower bottom inlet mouth; Described rectifier bottoms discharge port is connected with another phenylacrolein finished product distillation system opening for feed.
In above-mentioned technical characteristic, described scraper evaporator adopts the heating of thermal oil chuck.
The device of the phenylacrolein Separation of Benzene formaldehyde that the utility model provides, be by dehydration after phenylacrolein raw product pass into scraper evaporator continuously after evaporate rapidly, do not need condensation, but directly enter in the middle part of rectifying tower with gas phase, being separated of phenyl aldehyde and phenylacrolein (band high boiling point product) is completed in rectifying tower, phenyl aldehyde enters condenser and is separated into phenyl aldehyde through phase splitter and enters phenyl aldehyde storage tank after tower top discharging, other impurity return rectifying tower, enter after reboiler is separated high boiling point product after phenylacrolein (band high boiling point product) discharging at the bottom of tower and return rectifying tower, another phenylacrolein finished product refining system is entered from discharge port at the bottom of rectifying tower through overflow.Due to phenylacrolein raw product enter scraper evaporator after the residence time very short, the high-temperature time of experience is very short, between each component of material and the polymerization of self greatly reduce, these unpolymerized high boiling material can be passed through alkaline hydrolysis generation phenyl aldehyde and phenylacrolein is reclaimed, the rate of recovery of such product improves greatly, and quality also significantly improves.
Accompanying drawing explanation
Fig. 1 is the phenylacrolein Separation of Benzene formaldehyde plant structural representation in the utility model.
In figure: 1-scraper evaporator; 2-rectifying tower; 3-condenser;
4-phase splitter; 5-reboiler; 6-leftover bits and pieces still;
7-phenyl aldehyde storage tank.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
As shown in Figure 1, the device of a kind of phenylacrolein Separation of Benzene formaldehyde proposed in the utility model, comprises scraper evaporator 1, rectifying tower 2, condenser 3, phase splitter 4, reboiler 5, leftover bits and pieces still 6, phenyl aldehyde storage tank 7, the top gas outlet of scraper evaporator 1 is connected with steam inlet in the middle part of rectifying tower 2, the bottom discharge mouth of scraper evaporator 1 is connected with leftover bits and pieces still 6 top inlet, rectifying tower 2 top steam outlet is connected with condenser 3 steam inlet, condenser 3 liquid outlet is connected with phase splitter 5 fluid inlet, one liquid outlet of phase splitter 4 is connected with the import of rectifying tower 2 upper return, another liquid outlet of phase splitter 4 is connected with phenyl aldehyde storage tank 7, bottom rectifying tower 2, liquid outlet is connected with reboiler 5 bottom liquid inlet mouth, air outlet, reboiler 5 top is connected with rectifying tower 2 bottom inlet mouth, rectifying tower 5 bottom discharge mouth is connected with another phenylacrolein finished product distillation system opening for feed.
In the utility model, the device workflow of phenylacrolein Separation of Benzene formaldehyde is as follows: the top that dehydrated meat cinnamic aldehyde crude product enters scraper evaporator 1 is distributed to wall goes downstream through stirring, by evaporation after the heating of external jacket heat-conducting oil, steam enters in the middle part of rectifying tower 2 from air outlet, scraper evaporator 1 top, unevaporated high boiling material is downstream to leftover bits and pieces still 7, steam carries out vapour-liquid mass after entering rectifying tower 2, phenyl aldehyde rises to top of tower and is cooled to liquid through condenser 3 and enters phase splitter 4, part phenyl aldehyde is back to rectifying tower 2 through phase splitter one liquid outlet, another part phenyl aldehyde through another liquid outlet discharging of phase splitter to phenyl aldehyde storage tank 7, the bottom that phenylacrolein and part high boiling material flow to rectifying tower 2 downwards enters reboiler 3, rectifying tower 2 is returned through air outlet, reboiler 5 top by the phenylacrolein after reboiler 5 heating and separating, another phenylacrolein finished product refining system is entered after overflow, complete the sepn process with phenyl aldehyde.
The content be not described in detail in this specification sheets belongs to the known prior art of professional and technical personnel in the field.
Claims (2)
1. a device for phenylacrolein Separation of Benzene formaldehyde, is characterized in that: comprise scraper evaporator (1), rectifying tower (2), condenser (3), phase splitter (4), reboiler (5), leftover bits and pieces still (6), phenyl aldehyde storage tank (7); The top gas outlet of described scraper evaporator (1) is connected with rectifying tower (2) middle part steam inlet, and the bottom discharge mouth of described scraper evaporator (1) is connected with leftover bits and pieces still (6) top inlet; Described rectifying tower (2) top steam outlet is connected with condenser (3) steam inlet; Described condenser (3) liquid outlet is connected with phase splitter (4) fluid inlet; One liquid outlet of described phase splitter (4) is connected with rectifying tower (2) upper return import, and another liquid outlet of phase splitter (4) is connected with phenyl aldehyde storage tank (7); Described rectifying tower (2) bottom liquid outlet is connected with reboiler (5) bottom liquid inlet mouth; Described reboiler (5) air outlet, top is connected with rectifying tower (2) bottom inlet mouth; Described rectifying tower (2) bottom discharge mouth is connected with another phenylacrolein finished product distillation system opening for feed.
2. the device of phenylacrolein Separation of Benzene formaldehyde according to claim 1, is characterized in that: described scraper evaporator (1) adopts the heating of thermal oil chuck.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520630973.3U CN204958761U (en) | 2015-08-20 | 2015-08-20 | Device of cinnamic acid separation benzaldehyde |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520630973.3U CN204958761U (en) | 2015-08-20 | 2015-08-20 | Device of cinnamic acid separation benzaldehyde |
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| Publication Number | Publication Date |
|---|---|
| CN204958761U true CN204958761U (en) | 2016-01-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520630973.3U Active CN204958761U (en) | 2015-08-20 | 2015-08-20 | Device of cinnamic acid separation benzaldehyde |
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| CN (1) | CN204958761U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590604A (en) * | 2019-10-17 | 2019-12-20 | 江苏新河农用化工有限公司 | Continuous rectification and purification device for m-phthalonitrile |
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2015
- 2015-08-20 CN CN201520630973.3U patent/CN204958761U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110590604A (en) * | 2019-10-17 | 2019-12-20 | 江苏新河农用化工有限公司 | Continuous rectification and purification device for m-phthalonitrile |
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