CN209204708U - A kind of EO stripper plant in ethylene oxide production - Google Patents
A kind of EO stripper plant in ethylene oxide production Download PDFInfo
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- CN209204708U CN209204708U CN201821769491.6U CN201821769491U CN209204708U CN 209204708 U CN209204708 U CN 209204708U CN 201821769491 U CN201821769491 U CN 201821769491U CN 209204708 U CN209204708 U CN 209204708U
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- stripper
- steam
- ethylene oxide
- oxide production
- aqueous solution
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Abstract
A kind of EO stripper plant in ethylene oxide production, including stripper and tower bottom reboiler, EO gas vent and EO aqueous solution inlet duct is arranged in stripper top, liquid distribution trough, structured packing and gas distributor are set from top to bottom inside stripper, and EO aqueous solution inlet duct is set to the top of liquid distribution trough；Stripper lower part is equipped with the first taphole and the first steam inlet, the first taphole and tower bottom reboiler solution inlet port piping connection of stripper, tower bottom reboiler steam (vapor) outlet and the first steam inlet of stripper piping connection, forms interior circulation；The first steam inlet of stripper is set to the lower section of gas distributor.By the structure of the utility model, former stripper internal structure is optimized, by the setting of liquid distribution trough, structured packing, gas distributor and steam jet ejector, spotting out rate in tower is reduced, improves steam stripping efficiency, low energy consumption for process.
Description
Technical field
The utility model relates to the EO stripper plants in a kind of ethylene oxide production.
Background technique
Ethylene oxide device is to react generation under silver catalyst with feed ethylene and oxygen, and main reaction therein is ethylene
It is reacted with oxygen and generates ethylene oxide, side reaction is that ethylene generates water and carbon dioxide, wherein the ethylene oxide generated exists
It being absorbed in circulating air with process water, then arrives stripper again and stripped, ethylene oxide, which is dissolved in water, can generate ethylene glycol, and
Tower bottom lean solution exports the absorption water of gas phase EO as absorbing reaction device, and the content rising of ethylene glycol will have a direct impact on gas phase in lean solution
The assimilation effect of EO causes selective decline, product yield, quality decline so as to cause the rising of reactor inlet EO content.From
In the EO aqueous solution that ethylene oxide production obtains, high efficiency, which extracts EO, becomes problem to be solved.
Summary of the invention
For above-mentioned technical problem of the existing technology, the purpose of the present invention is to provide in a kind of ethylene oxide production
EO stripper plant, by the structure of the utility model, in EO extraction process, spotting out rate is low, stability is good.
EO stripper plant in a kind of ethylene oxide production, it is characterised in that including stripper and tower bottom reboiler, stripping
EO gas vent and EO aqueous solution inlet duct is arranged in tower top, and liquid distribution trough, regular is arranged inside stripper from top to bottom
Filler and gas distributor, EO aqueous solution inlet duct are set to the top of liquid distribution trough；It is molten that stripper lower part is equipped with first
Liquid outlet and the first steam inlet, the first taphole and tower bottom reboiler solution inlet port piping connection of stripper, tower bottom is again
Device steam (vapor) outlet and the first steam inlet of stripper piping connection are boiled, interior circulation is formed；First steam inlet of stripper is arranged
In the lower section of gas distributor.
EO stripper plant in a kind of ethylene oxide production, it is characterised in that further include steam jet ejector and circulation
Water flash tank, stripper lower part are additionally provided with the second steam inlet, and the second steam inlet of stripper is set to gas distributor
Lower section, the steam (vapor) outlet of steam jet ejector and the second steam inlet piping connection of stripper, the steam inlet of steam jet ejector
With recirculated water flash tank piping connection, steam jet ejector sprays the steam of high speed into stripper, is formed local in stripper
Low pressure, to reduce the steam pressure of stripper bottom.
EO stripper plant in a kind of ethylene oxide production, it is characterised in that further include condenser, on stripper
Portion is additionally provided with refluxing opening, and EO gas vent, the refluxing opening on stripper are connect with condenser.
EO stripper plant in a kind of ethylene oxide production, it is characterised in that the EO aqueous solution inlet tube of stripper
Restriction orifice is provided in road.
EO stripper plant in a kind of ethylene oxide production, it is characterised in that it is molten that stripper bottom is additionally provided with second
Liquid outlet, is socketed with shell pipeline on the outside of EO aqueous solution inlet duct, and shell pipeline is equipped with flow inlet and water export, and second
The flow inlet piping connection of taphole and shell pipeline, so that the water flowed out from the second taphole is to EO aqueous solution entrance
It is preheated on the outside of pipeline.
EO stripper plant in a kind of ethylene oxide production, it is characterised in that the model M- of structured packing
250.X。
The utility model optimizes former stripper internal structure by using above-mentioned technology, by liquid distribution trough,
Structured packing, the setting of gas distributor and steam jet ejector reduce spotting out rate in tower, and steam jet ejector can be further
Pressure difference in tower is reduced, stripping gas is condensed by condenser, condensate liquid returns again to further progress extraction, whole process stripping
It is high-efficient, it is recycled by the connection between tower bottom reboiler and stripper, reduces steam consumption, improve product quality, there is section
Water, economize on electricity, energy conservation advantage.
Detailed description of the invention
FIG. 1 is a schematic structural view of the utility model；
In figure: 1- stripper, 2- refluxing opening, 3-EO aqueous solution inlet duct, 4- liquid distribution trough, 5- structured packing, 6-
Gas distributor, 7- steam jet ejector, 8- tower bottom reboiler, the second taphole of 9-, 10-EO gas vent.
Specific embodiment
The present invention is further explained in the light of specific embodiments, but the scope of protection of the present invention is not limited thereto.
A kind of EO stripper plant in ethylene oxide production, including stripper 1, condenser, steam jet ejector 7 and tower bottom are again
Device 8 is boiled, stripper 1 is provided with EO gas vent 10, refluxing opening 2, EO aqueous solution inlet duct 3, liquid distribution trough from top to bottom
4, structured packing 5(model M-250.X), gas distributor 6 and the second taphole 9, liquid distribution trough 4,5 and of structured packing
Gas distributor 6 is set to the inside of stripper 1.EO gas vent 10, refluxing opening 2 on stripper 1 are connect with condenser,
Condensed liquid enters stripper 1, continues to extract a small amount of EO for carrying secretly in condensate liquid, most of EO in gaseous form from
It flows out, and then collects in condenser.
1 lower part of stripper is equipped with the first taphole and the first steam inlet, the first taphole and tower bottom of stripper 1
8 solution inlet port piping connection of reboiler, 8 steam (vapor) outlet of tower bottom reboiler and 1 first steam inlet piping connection of stripper are formed
Interior circulation；1 first steam inlet of stripper is set to the lower section of gas distributor 6, and the steam of 6 pairs of gas distributor risings carries out
Distribution, provides high-temperature vapor into stripper 1 by tower bottom reboiler 8, flow back into the fluid temperature of 1 bottom of stripper compared with
Height, high-temp liquid enter back into tower bottom reboiler 8, improve steam utilization.
The structure of the utility model further includes recirculated water flash tank, and 1 lower part of stripper is additionally provided with the second steam inlet, stripping
Second steam inlet of tower 1 is set to the lower section of gas distributor 6, and the steam of 6 pairs of gas distributor risings is distributed, steam
The steam (vapor) outlet of injector 7 and the second steam inlet piping connection of stripper 1, the steam inlet and circulation of steam jet ejector 7
Water flash tank piping connection, recirculated water flash tank convey high-temperature vapor into steam jet ejector 7, by steam jet ejector 7 to
The steam of injection high speed, forms low pressure local in stripper 1, to reduce the vapour pressure of 1 bottom of stripper in stripper 1
Power avoids the air pressure of bottom in stripper 1 too big so that EO aqueous solution is not easy to flow down, cause stripping process can not normally into
Row.
In the structure of the utility model, be provided with restriction orifice in the EO aqueous solution inlet duct 3 of stripper 1, this be for
It prevents the water-soluble flow velocity of EO too fast, is begun vaporization before causing EO aqueous solution to enter stripper 1, cause 1 tower top pressure of stripper
Power is excessively high, and the high-temperature water vapor of such 1 tower bottom of stripper is not easy to flow up, and influences stripping process.
In order to further increase capacity usage ratio, shell pipeline, shell pipeline are socketed on the outside of EO aqueous solution inlet duct 3
Equipped with flow inlet and water export, the flow inlet piping connection of the second taphole 9 and shell pipeline on stripper 1,
Higher from the temperature of 9 outflow water of the second taphole, the water flowed out from the second taphole 9 can enter in shell pipeline, right
It is preheated on the outside of EO aqueous solution inlet duct 3, it is higher into the EO aqueous temperature of stripper 1 in this way, need less amount of height
The extraction to EO gas can be completed in heated steam, can effectively reduce energy consumption.
In the utility model, by liquid distribution trough 4, the setting of structured packing 5 and gas distributor 6, the EO water that flows down
Solution and the high-temperature water vapor of rising uniformly contact in stripper 1, and process reduces the spotting out rate in stripper 1, improve stripping
Efficiency.
Content described in this specification is only to enumerate to inventive concept way of realization, and protection scope of the present invention is not answered
When the concrete form for being seen as limited by embodiment and being stated, protection scope of the present invention is also only in those skilled in the art's root
According to present inventive concept it is conceivable that equivalent technologies mean.
Claims (6)
1. the EO stripper plant in a kind of ethylene oxide production, it is characterised in that including stripper (1) and tower bottom reboiler (8),
EO gas vent (10) and EO aqueous solution inlet duct (3) is arranged in stripper (1) top, sets from top to bottom inside stripper (1)
Liquid distribution trough (4), structured packing (5) and gas distributor (6) are set, EO aqueous solution inlet duct (3) is set to liquid distribution
The top of device (4)；Stripper (1) lower part is equipped with the first taphole and the first steam inlet, and the first solution of stripper (1) goes out
Mouthful with tower bottom reboiler (8) solution inlet port piping connection, tower bottom reboiler (8) steam (vapor) outlet and (1) first steam of stripper into
Mouth piping connection forms interior circulation；First steam inlet of stripper (1) is set to the lower section of gas distributor (6).
2. the EO stripper plant in a kind of ethylene oxide production according to claim 1, it is characterised in that further include steam
Injector (7) and recirculated water flash tank, stripper (1) lower part are additionally provided with the second steam inlet, the second steam of stripper (1) into
Mouth is set to the lower section of gas distributor (6), the steam (vapor) outlet of steam jet ejector (7) and second steam inlet of stripper (1)
Piping connection, the steam inlet of steam jet ejector (7) and recirculated water flash tank piping connection, steam jet ejector (7) is to stripper
(1) steam of injection high speed, forms low pressure local in stripper (1), to reduce the vapour pressure of stripper (1) bottom in
Power.
3. the EO stripper plant in a kind of ethylene oxide production according to claim 1, it is characterised in that further include condensation
Device, stripper (1) top are additionally provided with refluxing opening (2), the EO gas vent (10), refluxing opening (2) on stripper (1) with condensation
Device connection.
4. the EO stripper plant in a kind of ethylene oxide production according to claim 1, it is characterised in that stripper (1)
Restriction orifice is provided in EO aqueous solution inlet duct (3).
5. the EO stripper plant in a kind of ethylene oxide production according to claim 1, it is characterised in that stripper (1) bottom
Portion is additionally provided with the second taphole (9), and shell pipeline is socketed on the outside of EO aqueous solution inlet duct (3), and shell pipeline is equipped with water
Inflow entrance and water export, the flow inlet piping connection of the second taphole (9) and shell pipeline, so as to go out from the second solution
The water of mouth (9) outflow preheats EO aqueous solution inlet duct (3) outside.
6. the EO stripper plant in a kind of ethylene oxide production according to claim 1, it is characterised in that structured packing (5)
Model M-250.X.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821769491.6U CN209204708U (en) | 2018-10-30 | 2018-10-30 | A kind of EO stripper plant in ethylene oxide production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821769491.6U CN209204708U (en) | 2018-10-30 | 2018-10-30 | A kind of EO stripper plant in ethylene oxide production |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209204708U true CN209204708U (en) | 2019-08-06 |
Family
ID=67457482
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821769491.6U Active CN209204708U (en) | 2018-10-30 | 2018-10-30 | A kind of EO stripper plant in ethylene oxide production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209204708U (en) |
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2018
- 2018-10-30 CN CN201821769491.6U patent/CN209204708U/en active Active
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