CN215822382U - Device for continuously producing ethylene glycol by rectifying mixed alcohol - Google Patents
Device for continuously producing ethylene glycol by rectifying mixed alcohol Download PDFInfo
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- CN215822382U CN215822382U CN202121286705.6U CN202121286705U CN215822382U CN 215822382 U CN215822382 U CN 215822382U CN 202121286705 U CN202121286705 U CN 202121286705U CN 215822382 U CN215822382 U CN 215822382U
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Abstract
The utility model relates to a device for continuously producing ethylene glycol by rectifying mixed alcohol. The technical scheme is as follows: the bottom of the rectifying tower is a tower kettle, a reboiler is arranged in the tower kettle, and the mixed alcohol is connected to the tower kettle through a pipeline and a mixed alcohol regulating valve; the top of the rectifying tower is connected with a condenser through a pipeline, a liquid outlet of the condenser is connected to a reflux tank, the lower end of the reflux tank is connected to the upper side of the rectifying tower through a pipeline and a reflux pump, a vacuumizing line is arranged at the top of the reflux tank, the outer end of the vacuumizing line is connected with a vacuumizing pump, and the outer side of the vacuumizing pump is connected with a waste gas processor; the middle side of the rectifying tower is provided with a continuous extraction outlet which is connected to an ethylene glycol product storage tank through a pipeline. The beneficial effects are that: according to the utility model, the vacuum pumping pump arranged in the reflux tank is used for keeping the rectification tower, the condenser and the reflux tank in vacuum, so that the repeated switching of normal pressure and negative pressure in production is avoided, the rectification effect of the rectification tower can be fully exerted, and the influence on the production stability rate of the device due to large vacuum fluctuation is avoided.
Description
Technical Field
The utility model relates to a device for producing ethylene glycol by hydrolyzing ethylene carbonate, in particular to a device for continuously producing ethylene glycol by rectifying mixed alcohol.
Background
At present, basic-grade Ethylene Carbonate (EC) is hydrolyzed to produce mixed alcohol, wherein the content of ethylene glycol is highest, the hydrolysis and rectification of the basic-grade ethylene carbonate are finished by the same equipment, the normal pressure and negative pressure are repeatedly switched in the production process, and the production mode cannot fully exert the due rectification function of a rectification tower, so that the large vacuum fluctuation is easily caused, and the production stability rate is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects in the prior art, and provides a device for continuously producing ethylene glycol by rectifying mixed alcohol, which avoids repeated switching of normal pressure and negative pressure in production, can further fully play the rectifying effect of a rectifying tower, and avoids large vacuum fluctuation and influence on the production stability rate.
The utility model provides a device for continuously producing ethylene glycol by rectifying mixed alcohol, which has the technical scheme that: the device comprises a rectifying tower (T001), a condenser (E103), a reflux tank (V104), a reflux pump (P104), mixed alcohol (1), an ethylene glycol product storage tank (5), a waste gas processor (6), a mixed alcohol regulating valve (7) and a reboiler (9), wherein the bottom of the rectifying tower (T001) is a tower kettle, the reboiler (9) is arranged in the tower kettle, and the mixed alcohol (1) is connected to a continuous feeding port of the tower kettle through a pipeline and the mixed alcohol regulating valve (7); the top of the rectifying tower (T001) is connected with a liquid inlet of a condenser (E103) through a pipeline, a liquid outlet of the condenser (E103) is connected to a reflux tank (V104), the lower end of the reflux tank (V104) is connected to the upper side of the rectifying tower (T001) through a pipeline and a reflux pump (P104), a vacuumizing line (11) is arranged at the top of the reflux tank (V104), the outer end of the vacuumizing line (11) is connected with a vacuumizing pump (12), and the outer side of the vacuumizing pump (12) is connected with a waste gas processor (6); and a continuous extraction outlet is arranged at the middle side of the rectifying tower (T001), and is connected to the ethylene glycol product storage tank (5) through a pipeline.
Preferably, the inlet of the reboiler (9) is connected to the steam generator (2) by means of a line and a steam regulating valve (8), and the outlet of the reboiler (9) is connected to the steam storage tank (3) by means of a line.
Preferably, a transparent liquid level pipe (10) is arranged on one side of the bottom of the rectifying tower (T001), and the bottom of the tower is connected with a kettle bottom liquid discharge storage tank (4) through a pipeline.
Preferably, the outlet of the reboiler (9) is connected to the steam storage tank (3) through a line and a first valve (13).
Preferably, the continuous extraction port at the middle side of the rectifying tower (T001) is connected to the ethylene glycol product storage tank (5) through a pipeline and a three-way valve (16), and the third channel of the three-way valve (16) is connected to the ethylene glycol monitor (15) through a pipeline.
Preferably, a third valve (17) is provided on the line connecting the continuous take-off port.
Preferably, a second valve (14) is arranged on a pipeline between the mixed alcohol regulating valve (7) and the continuous feed inlet of the tower bottom.
The utility model has the beneficial effects that: the mixed alcohol enters a tower kettle at the bottom of the rectifying tower through a mixed alcohol regulating valve, the mixed alcohol in the tower kettle of the rectifying tower can be heated through a reboiler, a condenser is connected to the top of the rectifying tower, a vacuum pump is arranged at the top of a reflux tank, gas-phase condensate enters the reflux tank and is pumped to the top of the rectifying tower through the reflux pump, non-condensable gas enters a waste gas processor along with the vacuum pump, and qualified ethylene glycol is continuously extracted from the middle part of the rectifying tower;
according to the utility model, the vacuum pumping pump arranged in the reflux tank is used for keeping the rectification tower, the condenser and the reflux tank in vacuum, so that the repeated switching of normal pressure and negative pressure in production is avoided, the rectification effect of the rectification tower can be fully exerted, and the influence on the production stability rate of the device due to large vacuum fluctuation is avoided.
Drawings
FIG. 1 is a schematic structural view of embodiment 1 of the present invention;
FIG. 2 is a schematic structural view of example 2;
in the upper diagram: the system comprises a rectifying tower T001, a condenser E103, a reflux tank V104, a reflux pump P104, mixed alcohol 1, a steam generator 2, a water vapor storage tank 3, a kettle bottom liquid discharge storage tank 4, an ethylene glycol product storage tank 5, a waste gas processor 6, a mixed alcohol regulating valve 7, a steam regulating valve 8, a reboiler 9, a transparent liquid level pipe 10, a vacuumizing line 11, a vacuumizing pump 12, a first valve 13, a second valve 14, an ethylene glycol monitor 15, a three-way valve 16 and a third valve 17.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Embodiment 1, referring to fig. 1, the apparatus for continuously producing ethylene glycol by rectifying mixed alcohol according to the present invention includes a rectifying tower T001, a condenser E103, a reflux tank V104, a reflux pump P104, mixed alcohol 1, an ethylene glycol product storage tank 5, a waste gas processor 6, a mixed alcohol regulating valve 7, and a reboiler 9, wherein the bottom of the rectifying tower T001 is a tower bottom, a reboiler 9 is disposed in the tower bottom, and the mixed alcohol 1 is connected to a continuous feed inlet of the tower bottom through a pipeline and the mixed alcohol regulating valve 7; the top of the rectifying tower T001 is connected with a liquid inlet of a condenser E103 through a pipeline, a liquid outlet of the condenser E103 is connected to a reflux tank V104, the lower end of the reflux tank V104 is connected to the upper side of the rectifying tower T001 through a pipeline and a reflux pump P104, a vacuumizing line 11 is arranged at the top of the reflux tank V104, the outer end of the vacuumizing line 11 is connected with a vacuumizing pump 12, and the outer side of the vacuumizing pump 12 is connected with a waste gas processor 6; and a continuous extraction outlet is arranged at the middle side of the rectifying tower T001 and is connected to the ethylene glycol product storage tank 5 through a pipeline.
Wherein the inlet of the above-mentioned reboiler 9 is connected to the steam generator 2 through a line and a steam regulating valve 8, and the outlet of said reboiler 9 is connected to the steam storage tank 3 through a line.
The transparent liquid level pipe 10 is arranged on one side of the tower kettle at the bottom of the rectifying tower T001, so that the liquid level of the tower kettle can be observed conveniently, and the bottom of the tower kettle is connected with the kettle bottom liquid discharge storage tank 4 through a pipeline.
The outlet of the reboiler 9 is connected to the vapor storage tank 3 through a pipeline and a first valve 13, a third valve 17 is arranged on the pipeline connected with the continuous extraction outlet, and a second valve 14 is arranged on the pipeline between the mixed alcohol regulating valve 7 and the continuous feed inlet of the tower kettle, so that the switch can be controlled more conveniently.
When the device is used, mixed alcohol enters a tower kettle at the bottom of a rectifying tower T001 through a mixed alcohol regulating valve 7 and a second valve 14, the mixed alcohol in the tower kettle of the rectifying tower can be heated through a reboiler 9, the top of the rectifying tower is connected with a condenser E103, a vacuum pump is arranged at the top of a reflux tank V104, gas phase condensate enters the reflux tank V104 and is sent to the top of the rectifying tower T001 through a reflux pump P104, noncondensable gas enters a waste gas processor along with the vacuum pump, and qualified ethylene glycol is continuously extracted from the middle of the rectifying tower T001.
The difference from the embodiment 1 is that: the continuous extraction outlet at the middle side of the rectifying tower T001 is connected to the ethylene glycol product storage tank 5 through a pipeline and a three-way valve 16, and the third channel of the three-way valve 16 is connected to an ethylene glycol monitor 15 through a pipeline, so that the purity and the flow of ethylene glycol can be measured.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent changes made according to the technical solution of the present invention shall fall within the scope of the present invention as claimed.
Claims (7)
1. A device for continuously producing ethylene glycol by rectifying mixed alcohol is characterized in that: the device comprises a rectifying tower (T001), a condenser (E103), a reflux tank (V104), a reflux pump (P104), mixed alcohol (1), an ethylene glycol product storage tank (5), a waste gas processor (6), a mixed alcohol regulating valve (7) and a reboiler (9), wherein the bottom of the rectifying tower (T001) is a tower kettle, the reboiler (9) is arranged in the tower kettle, and the mixed alcohol (1) is connected to a continuous feeding port of the tower kettle through a pipeline and the mixed alcohol regulating valve (7); the top of the rectifying tower (T001) is connected with a liquid inlet of a condenser (E103) through a pipeline, a liquid outlet of the condenser (E103) is connected to a reflux tank (V104), the lower end of the reflux tank (V104) is connected to the upper side of the rectifying tower (T001) through a pipeline and a reflux pump (P104), a vacuumizing line (11) is arranged at the top of the reflux tank (V104), the outer end of the vacuumizing line (11) is connected with a vacuumizing pump (12), and the outer side of the vacuumizing pump (12) is connected with a waste gas processor (6); and a continuous extraction outlet is arranged at the middle side of the rectifying tower (T001), and is connected to the ethylene glycol product storage tank (5) through a pipeline.
2. The apparatus for producing ethylene glycol by rectifying mixed alcohol according to claim 1, wherein: the inlet of the reboiler (9) is connected to the steam generator (2) through a pipeline and a steam regulating valve (8), and the outlet of the reboiler (9) is connected to the steam storage tank (3) through a pipeline.
3. The device for continuously producing the ethylene glycol by rectifying the mixed alcohol as claimed in claim 1 or 2, which is characterized in that: and one side of the tower kettle at the bottom of the rectifying tower (T001) is provided with a transparent liquid level pipe (10), and the bottom of the tower kettle is connected with a kettle bottom liquid discharge storage tank (4) through a pipeline.
4. The device for continuously producing the ethylene glycol by rectifying the mixed alcohol as claimed in claim 2, which is characterized in that: the outlet of the reboiler (9) is connected to a steam storage tank (3) via a line and a first valve (13).
5. The apparatus for producing ethylene glycol by rectifying mixed alcohol according to claim 1, wherein: the continuous extraction outlet at the middle side of the rectifying tower (T001) is connected to the ethylene glycol product storage tank (5) through a pipeline and a three-way valve (16), and a third channel of the three-way valve (16) is connected to an ethylene glycol monitor (15) through a pipeline.
6. The device for continuously producing the ethylene glycol by rectifying the mixed alcohol as claimed in claim 5, which is characterized in that: and a third valve (17) is arranged on a pipeline connected with the continuous extraction outlet.
7. The apparatus for producing ethylene glycol by rectifying mixed alcohol according to claim 1, wherein: and a second valve (14) is arranged on a pipeline between the mixed alcohol regulating valve (7) and the continuous feed inlet of the tower kettle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121286705.6U CN215822382U (en) | 2021-06-09 | 2021-06-09 | Device for continuously producing ethylene glycol by rectifying mixed alcohol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121286705.6U CN215822382U (en) | 2021-06-09 | 2021-06-09 | Device for continuously producing ethylene glycol by rectifying mixed alcohol |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215822382U true CN215822382U (en) | 2022-02-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121286705.6U Active CN215822382U (en) | 2021-06-09 | 2021-06-09 | Device for continuously producing ethylene glycol by rectifying mixed alcohol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215822382U (en) |
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2021
- 2021-06-09 CN CN202121286705.6U patent/CN215822382U/en active Active
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