CN203715538U - Rectifying and purifying device for ethyl acetate under vacuum state - Google Patents
Rectifying and purifying device for ethyl acetate under vacuum state Download PDFInfo
- Publication number
- CN203715538U CN203715538U CN201320372841.6U CN201320372841U CN203715538U CN 203715538 U CN203715538 U CN 203715538U CN 201320372841 U CN201320372841 U CN 201320372841U CN 203715538 U CN203715538 U CN 203715538U
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- ethyl acetate
- rectifying
- rectifying tower
- reboiler
- tower
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Abstract
The utility model discloses a rectifying and purifying device for ethyl acetate under a vacuum state, and belongs to the field of ethyl acetate separation. The purifying device comprises a storage tank, a heat exchanger, a re-boiler, a rectifying tower, a condenser, a cooler and a separating slot, wherein the rectifying tower is used for rectifying water containing ethyl acetate so as to purify ethyl acetate contained in the water; a vacuum pump is used for pumping the rectifying tower to be vacuum, so that a rectifying process is carried out under vacuum, and therefore, the rectifying temperature can be lowered, high-temperature hydrolysis of ethyl acetate is reduced, and the product quality is improved; a heating device adopts a thermo-siphon re-boiler, and meanwhile, the temperature of the heated steam is lowered, so that a contact temperature can be lowered, and hydrolysis of ethyl acetate is reduced.
Description
Technical field
The utility model relates to the rectification and purification device of ethyl acetate under a kind of vacuum state, belongs to the separation field of ethyl acetate.
Background technology
Pure ethyl acetate is the liquid that water white transparency has irritating smell, it is a kind of broad-spectrum fine chemical product, there is excellent solvability, quick-drying, of many uses, be a kind of very important Organic Chemicals and fabulous industrial solvent, be widely used in the production process of cellulose acetate, ethyl cellulose, chlorinated rubber, ethenoid resin, acetate fiber resin, synthetic rubber, coating and paint etc.
The production technique of production ethyl acetate at present, is mainly traditional esterification technique.This processing method adopts the vitriol oil as catalyzer, the requirement that catalytic activity is fast, can meet production capacity, but exist, use the vitriol oil can make equipment corrosion serious, by product is many, the problem that material consumption is bigger than normal, in addition due to water and ethyl acetate energy azeotropic, water has certain solubleness in ethyl acetate, so it is well separated to utilize conventional distillation mode to be difficult to both, and energy consumption is large, equipment loss is large, and cost is high.Therefore, develop a kind of simple in structure, easy and simple to handle, rectifier unit that energy utilization rate is high, there is very large using value.
Utility model content
In view of this, the purpose of this utility model is just to provide the rectification and purification device of ethyl acetate under a kind of vacuum state, and this rectification and purification apparatus structure is simple, easy to operate, and can improve the quality of product.
The utility model is by the following technical solutions:
Under vacuum state, a rectification and purification device for ethyl acetate, comprises storage tank, interchanger, reboiler, rectifying tower, condenser, water cooler, separator tank; Described interchanger one end is connected with wastewater disposal basin with storage tank respectively with discharge pump by fresh feed pump, and the other end is connected with bottom with rectifying tower tower body middle part respectively; The top of described reboiler connects respectively rectifying tower tower body bottom and with the vapour pipe of reducing valve; The bottom of reboiler is communicated with rectifying tower tower body bottom; The import of described condenser is communicated with respectively top and the water cooler of distillation tower with outlet, and condenser is also connected with vacuum pump; The pipeline that is communicated with described condenser and water cooler is connected with return line, and described return line is communicated with rectifying tower tower body top; Described separator tank connects water cooler, and separator tank top is provided with products export, and separator tank bottom is connected with storage tank.Use vacuum pump that rectifying tower is evacuated, rectifying is carried out under vacuum, can reduce rectification temperature like this, reduce the pyrohydrolysis of ethyl acetate, improve product quality.
Described reboiler is thermosiphon reboiler.Steam, through reducing valve, is reduced to suitable pressure, then enters thermosiphon reboiler, and the temperature of heat exchange is reduced, and the heated water containing ethyl acetate and interchanger Contact Temperature reduce, and are conducive to improve product quality.
Compared with prior art, the beneficial effect the utlity model has is:
1) vacuum pump of the present invention is evacuated rectifying tower, and the rectifying of ethyl acetate is carried out under the state of vacuum, reduces vaporization temperature, reduces steam energy consumption, improves product quality.
2) reducing valve of vapour of the present invention, reduces vapour pressure to suitable size, then enters thermosiphon reboiler, and the temperature of heat exchange is reduced, and the heated water containing ethyl acetate and interchanger Contact Temperature reduce, and are conducive to improve product quality.
Accompanying drawing explanation
Fig. 1 is the device schema of the utility model preferred embodiment.
In figure: 1-storage tank; 2-interchanger; 3-thermosiphon reboiler; 4-rectifying tower; 5-condenser; 6-water cooler; 7-separator tank; 8-fresh feed pump; 9-discharge pump; 10-reducing valve; 11-vapour pipe; 12-vacuum pump; 13-return line.
Embodiment
For the ease of it will be appreciated by those skilled in the art that below in conjunction with accompanying drawing and embodiment, the utility model is described further.
Be illustrated in figure 1 preferred embodiment of the present utility model.
A rectification and purification device for ethyl acetate under vacuum state, comprises storage tank 1, interchanger 2, thermosiphon reboiler 3, rectifying tower 4, condenser 5, water cooler 6, separator tank 7; Described interchanger 2 one end are connected with wastewater disposal basin with storage tank 1 respectively with discharge pump 9 by fresh feed pump 8, and the other end is connected with bottom with rectifying tower 4 tower body middle parts respectively; The top of described thermosiphon reboiler 3 connects respectively rectifying tower 4 tower body bottoms and with the vapour pipe 11 of reducing valve 10; The bottom of thermosiphon reboiler 3 is communicated with rectifying 4 tower tower body bottoms; The import of described condenser 5 is communicated with respectively top and the water cooler 6 of distillation tower 4 with outlet, and condenser 5 is also connected with vacuum pump 12; Be communicated with described condenser 5 and be connected with return line 13 with the pipeline of water cooler 6, described return line 13 is communicated with rectifying tower 4 tower body tops; Described separator tank 7 connects water coolers 6, and separator tank 7 tops are provided with products export, and separator tank 7 bottoms are connected with storage tank 1.
Working process of the present utility model is: vacuum pump 12 starts, and rectifying tower is evacuated; Water containing 8% ethyl acetate is stored in storage tank 1, by fresh feed pump 8, ethyl acetate is transported to interchanger 2, then enters into rectifying tower 4.Volatile ethyl acetate enters condenser 5 from the top of rectifying tower 4, the ethyl acetate part that condensation is got off is got back to rectifying tower 4 tops as backflow by return line 13, a part enters water cooler 6, after cooling, enter separator tank 7, be separated into ethyl acetate phase and water, ethyl acetate is as product output, and water is got back to storage tank 1 and continued rectifying.Noncondensable gas is extracted in atmosphere by vacuum pump 12, keeps rectifying tower vacuum state.The water of difficult volatilization falls into rectifying tower 4 bottoms, and a part enters thermosiphon reboiler 3 tube side bottoms, after evaporation, from thermosiphon reboiler 3 tube side tops, again delivers to rectifying tower 4; Another part, from rectifying tower 4 bottoms, through interchanger 2, is discharged into wastewater disposal basin by discharge pump 9.Heating steam is reduced to suitable pressure by reducing valve 10, enters thermosiphon reboiler 3 shell side upper ends, and as heating source, the steam after heat exchange becomes the hydrophobic lower end from thermosiphon reboiler 3 shell sides and dredges out.
The above embodiment has only expressed Some Species embodiment of the present utility model, and it describes comparatively concrete and detailed, but can not therefore be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.
Claims (2)
1. a rectification and purification device for ethyl acetate under vacuum state, is characterized in that: comprise storage tank, interchanger, reboiler, rectifying tower, condenser, water cooler, separator tank; Described interchanger one end is connected with wastewater disposal basin with storage tank respectively with discharge pump by fresh feed pump, and the other end is connected with bottom with rectifying tower tower body middle part respectively; The top of described reboiler connects respectively rectifying tower tower body bottom and with the vapour pipe of reducing valve; The bottom of reboiler is communicated with rectifying tower tower body bottom; The import of described condenser is communicated with respectively top and the water cooler of distillation tower with outlet, and condenser is also connected with vacuum pump; The pipeline that is communicated with described condenser and water cooler is connected with return line, and described return line is communicated with rectifying tower tower body top; Described separator tank connects water cooler, and separator tank top is provided with products export, and separator tank bottom is connected with storage tank.
2. the rectification and purification device of ethyl acetate under a kind of vacuum state according to claim 1, is characterized in that: described reboiler is thermosiphon reboiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320372841.6U CN203715538U (en) | 2013-06-26 | 2013-06-26 | Rectifying and purifying device for ethyl acetate under vacuum state |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320372841.6U CN203715538U (en) | 2013-06-26 | 2013-06-26 | Rectifying and purifying device for ethyl acetate under vacuum state |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203715538U true CN203715538U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320372841.6U Expired - Fee Related CN203715538U (en) | 2013-06-26 | 2013-06-26 | Rectifying and purifying device for ethyl acetate under vacuum state |
Country Status (1)
| Country | Link |
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| CN (1) | CN203715538U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587475A (en) * | 2016-12-21 | 2017-04-26 | 苏州市晶协高新电子材料有限公司 | Apparatus and method for recycling ethyl acetate in waste liquid by using super-gravity bed combining membrane separation technology |
-
2013
- 2013-06-26 CN CN201320372841.6U patent/CN203715538U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106587475A (en) * | 2016-12-21 | 2017-04-26 | 苏州市晶协高新电子材料有限公司 | Apparatus and method for recycling ethyl acetate in waste liquid by using super-gravity bed combining membrane separation technology |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 510302 No. 204 Xingang West Road, Haizhu District, Guangzhou City, Guangdong Province Patentee after: China Electrical Appliance Research Institute Co., Ltd. Address before: 510302 No. 204 West Xingang Road, Guangdong, Guangzhou Patentee before: China National Electric Apparatus Research Institute Co., Ltd. |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140716 Termination date: 20210626 |