CN206008079U - DEC continuous rectification apparatus - Google Patents
DEC continuous rectification apparatus Download PDFInfo
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- CN206008079U CN206008079U CN201620994915.3U CN201620994915U CN206008079U CN 206008079 U CN206008079 U CN 206008079U CN 201620994915 U CN201620994915 U CN 201620994915U CN 206008079 U CN206008079 U CN 206008079U
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Abstract
This utility model provides a kind of DEC continuous rectification apparatus, it includes weight-removing column, rectifying column, condenser I, condenser II, return tank I, return tank II, weight-removing column upper end connects feed pipe, connected with condenser I by pipeline at the top of weight-removing column, condenser I is connected with return tank I, I liquid outlet of return tank is connected with reflux pump I by pipeline, and reflux pump I is connected with rectifying column and weight-removing column respectively by pipeline；Described weight-removing column, rectifier bottoms are arranged pipeline and are connected with independent reboiler respectively；Connected with condenser II by pipeline at the top of described rectifying column, condenser II is connected with return tank II, the liquid outlet of return tank II is connected with reflux pump II by pipeline, and reflux pump II is connected with rectifying column, reaction tower respectively by pipeline；Described rectification midsection is provided with side line discharge；Combined type column plate and structured packing is provided with described rectifying column, existing DEC process units is compared, and production efficiency is significantly improved.
Description
Technical field
This utility model is related to technical field of chemical, specially a kind of DEC continuous rectification apparatus.
Background technology
In the reaction of DEC production processes, DMC generates DMC, ethanol, methanol, the mixture of EMC and DEC with ethanol synthesis.Through
The isolated DEC crude products of alcohol ester, but wherein also containing impurity such as methanol, EMC, traditional handicraft is to remove these by batch distillation
Impurity, first proposes front-end volatiles and reintroduces excessive fraction so as to obtain DEC products, and which has power consumption, time-consuming defect, restriction
The enlarged reproduction ability of DEC products.
Content of the invention：
For solving the technological deficiency that above-mentioned DEC separated system is present, this utility model is special to be produced there is provided a kind of DEC
The DEC continuous rectification apparatus of efficiency high.
For achieving the above object, technical solution adopted in the utility model is：
A kind of DEC continuous rectification apparatus, it include weight-removing column, rectifying column, condenser I, condenser II, return tank I, backflow
Tank II, weight-removing column upper end connect feed pipe, are connected with condenser I by pipeline in the middle part of weight-removing column, and condenser I is connected with return tank I
Logical, I liquid outlet of return tank is connected with reflux pump I by pipeline, and reflux pump I is connected with rectifying column and weight-removing column respectively by pipeline
Logical；Described weight-removing column, rectifier bottoms are arranged pipeline and are connected with independent reboiler respectively；Pass through at the top of described rectifying column
Pipeline is connected with condenser II, and condenser II is connected with return tank II, and the liquid outlet of return tank II is by pipeline and reflux pump II
Connection, reflux pump II are connected with rectifying column, reaction tower respectively by pipeline；Described rectification midsection is provided with lateral line discharging
Mouthful；Combined type column plate and structured packing is provided with described rectifying column.
Described filler is arranged on above rectifying column inner chamber combined type column plate.
Operation principle of the present utility model is：
Material enters weight-removing column by feed pipe, and gas phase enters return tank I after the condensation of condenser I, through reflux pump I 1
It is partly refluxed to a weight-removing column part to discharge to treating column；Weight-removing column kettle material is recycled to tank by the feed opening that bottom is arranged
Area；Treating column top gaseous phase enters return tank II after the condensation of condenser II, is back to through II part of reflux pump refined
A tower part discharges to reaction tower；Treating column kettle material reclaims barrelling by being arranged on the feed opening of rectifying column lower end；Rectification
Side line discharge in the middle part of tower obtains final products DEC.
Condenser act as gas phase in cooling tower and is changed into liquid phase；Return tank act as liquid phase material and temporarily stores up；Backflow pumping action
For the backflow of tower top liquid phase material and discharging；Reboiler act as liquid phase in a tower and is changed into gas phase；Weight-removing column act as obtaining DEC thick
Product, treating column act as refining crude to qualified products, are transformed in original separated system, transform batch distillation
Tower is continuous rectifying tower, and it is efficient composite column plate and structured packing to change tower internals（Tower is the combined type of filler and column plate
Tower）, liquid-phase reflux and discharging is condensed, product discharge is changed to lateral line discharging, forms continuous feed mechanism with weight-removing column, further
EMC is separated, EMC reenters reaction tower synthesis DEC.
The beneficial effects of the utility model are：This utility model is related to the rectification and purification device in DEC productions, improves product
The efficiency of product rectification, reduces the use of steam, improves product quality, considerably reduce production cost.
Description of the drawings
Fig. 1 is overall structure figure of the present invention.
Specific embodiment：
Below in conjunction with the accompanying drawings the present invention is described further and is introduced.
A kind of DEC continuous rectification apparatus, it include weight-removing column 1, rectifying column 2, condenser I 3, condenser II 4, return tank I
5th, return tank II 6,1 upper end of weight-removing column connect feed pipe 10, are connected with condenser I 3 by pipeline, condenser I at the top of weight-removing column 1
3 are connected with return tank I 5, and I 5 liquid outlet of return tank is connected with reflux pump I 8 by pipeline, reflux pump I 8 by pipeline respectively with essence
Evaporate tower 2 to connect with weight-removing column 1；Described weight-removing column 1,2 bottom of rectifying column are arranged pipeline and are connected with independent reboiler 7 respectively；
Connected with condenser II 4 by pipeline at the top of described rectifying column 2, condenser II 4 is connected with return tank II 6, return tank II 6
Liquid outlet is connected with reflux pump II 9 by pipeline, and reflux pump II 9 is connected with rectifying column 2, reaction tower respectively by pipeline；Described
2 stage casing of rectifying column be provided with side line discharge 11；Combined type column plate and structured packing are provided with described rectifying column 2.
Described filler is arranged on above rectifying column inner chamber combined type column plate.
Increase by 200 tons every year using DEC yield after continuous rectification isolation technics, steam ton cost reduces 0.9T, reduces
Production cost, improves economic benefit；Continuous rectification improves product quality, increases product competitiveness, effectively widens
Market.
Claims (2)
1. a kind of DEC continuous rectification apparatus, it is characterised in that：It include weight-removing column, rectifying column, condenser I, condenser II, return
Stream tank I, return tank II, weight-removing column middle-end are connected feed pipe, are connected with condenser I by pipeline at the top of weight-removing column, condenser I and
Return tank I is connected, and I liquid outlet of return tank is connected with reflux pump I by pipeline, reflux pump I by pipeline respectively with rectifying column and
Weight-removing column is connected；Described weight-removing column, rectifier bottoms are arranged pipeline and are connected with independent reboiler respectively；Described rectifying column
Top is connected with condenser II by pipeline, and condenser II is connected with return tank II, the liquid outlet of return tank II pass through pipeline and
Reflux pump II connects, and reflux pump II is connected with rectifying column, reaction tower respectively by pipeline；Described rectification midsection is provided with side
Line discharging opening；Combined type column plate and structured packing is provided with described rectifying column.
2. DEC continuous rectification apparatus according to claim 1, it is characterised in that：Described filler is arranged in rectifying column
Above the combined type column plate of chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994915.3U CN206008079U (en) | 2016-08-31 | 2016-08-31 | DEC continuous rectification apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620994915.3U CN206008079U (en) | 2016-08-31 | 2016-08-31 | DEC continuous rectification apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206008079U true CN206008079U (en) | 2017-03-15 |
Family
ID=58254883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620994915.3U Active CN206008079U (en) | 2016-08-31 | 2016-08-31 | DEC continuous rectification apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206008079U (en) |
-
2016
- 2016-08-31 CN CN201620994915.3U patent/CN206008079U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |