CN206375840U - Styrene production energy-saving device - Google Patents
Styrene production energy-saving device Download PDFInfo
- Publication number
- CN206375840U CN206375840U CN201621289405.2U CN201621289405U CN206375840U CN 206375840 U CN206375840 U CN 206375840U CN 201621289405 U CN201621289405 U CN 201621289405U CN 206375840 U CN206375840 U CN 206375840U
- Authority
- CN
- China
- Prior art keywords
- tower
- ethylbenzene
- crude styrene
- pressure column
- styrene
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model is mainly used in the production technical field of styrene, more particularly to a kind of styrene production energy-saving device, including crude styrene high-pressure tower, the upper feed inlet of crude styrene high-pressure tower and crude styrene lower pressure column connects the discharging opening of Ethylbenzene hydrogen removal system by pipeline respectively, the bottom discharge mouthful of crude styrene high-pressure tower and crude styrene lower pressure column is respectively communicated with refining benzene ethylene column, the bottom connection lower pressure column reboiler of crude styrene lower pressure column, crude styrene high pressure column overhead connects ethylbenzene tower charging aperture by tower overhead gas efferent duct, tower overhead gas efferent duct connects lower pressure column reboiler, crude styrene low pressure column overhead connects lower pressure column condenser, ethylbenzene column overhead connects ethylbenzene tower condenser, refining benzene ethylene column bottom of towe is tar pipe, top connects refining benzene Ethylene Fractionator condenser.The utility model is in total water hydrocarbon than that in the case of constant, steam superheater quantity of steam can be increased, to reduce steam superheating heater outlet temperature.
Description
Technical field
The utility model is related to a kind of styrene production energy-saving device, is mainly used in the production technical field of styrene.
Background technology
Currently, state-of-the-art ethylbenzene dehydrogenation production technology is Lummus and TOTAL/Badger adabatic dehydrogenation skills in the world
Art, two techniques are quite similar, and respectively have feature.
Lummus later technologies use low water hydrocarbon ratio (1.0 or so), and phenyl ethylene rectification only needs heating using styrene
Rectification process twice, i.e., first separate ethylbenzene and styrene, benzene, toluene and the ethylbenzene of tower top enter second in crude styrene tower
Benzene column is separated benzene and toluene with ethylbenzene, and benzene and toluene enter back into benzene toluene tower and further separated.Crude styrene bottoms
Material enters refining benzene ethylene column, styrene is separated with heavy constituent, tower top obtains product styrene.Crude styrene tower uses azeotropic section
Can technology, i.e. overhead stream ethylbenzene and the condensation of water azeotropic mixture, ethylbenzene and water feeding ethylbenzene dehydrogenation unit and steam after evaporation
Enter the first dehydrogenation reactor after the mixing of superheater outlet vapor.Due to the proportions constant of ethylbenzene and water azeotropic mixture, in total water hydrocarbon
In the case of constant, the quantity of steam of steam superheating outlet of still cannot also become, to reach certain reaction temperature, Zhi Nengti
The outlet temperature of high steam superheater is realized.At present, the outlet temperature of the technology steam superheater is more than 900 DEG C,
Very big difficulty is brought to technological operation and engineering design.
TOTAL/Badger later technologies also use low water hydrocarbon ratio (1.0 or so), and phenyl ethylene rectification is using order essence
Evaporate technique, i.e., first separated benzene, toluene in benzene/methylbenzene tower with ethylbenzene and heavy constituent, ethylbenzene and heavy constituent enter ethylbenzene/
Styrene separating tower is further separated, and tower top obtains ethylbenzene, tower base stream feeding refining benzene ethylene column, by styrene and heavy constituent point
From tower top obtains product styrene, and the technology styrene need to be heated three times.Ethylbenzene/styrene separating tower is become using double tower
Press power-saving technology.
Utility model content
The technical problems to be solved in the utility model is：A kind of solution is provided under low water ratio (1.0 or so), if crude benzol second
Alkene tower uses azeotropic distillation again, and steam superheater steam flow will be greatly decreased, and its outlet temperature too high (up to 900 DEG C) is asked
Topic.
Styrene production energy-saving device described in the utility model, including crude styrene high-pressure tower and crude styrene low pressure
The upper feed inlet of tower, crude styrene high-pressure tower and crude styrene lower pressure column connects going out for Ethylbenzene hydrogen removal system by pipeline respectively
The bottom discharge mouth of material mouth, crude styrene high-pressure tower and crude styrene lower pressure column is respectively communicated with refining benzene ethylene column, and crude styrene is high
Press the bottom connection high-pressure tower reboiler of tower, the bottom connection lower pressure column reboiler of crude styrene lower pressure column, crude styrene high pressure
Column overhead connects ethylbenzene tower charging aperture, tower overhead gas efferent duct connection lower pressure column reboiler, crude styrene by tower overhead gas efferent duct
Low pressure column overhead connects lower pressure column condenser, and lower pressure column condensator outlet enters with crude styrene low pressure column overhead, ethylbenzene tower respectively
Material mouth connect, ethylbenzene column overhead connection ethylbenzene tower condenser, ethylbenzene tower condenser discharging opening respectively with ethylbenzene column overhead, ethylbenzene tower
Discharge nozzle is connected, and refining benzene ethylene column bottom of towe is tar pipe, top connection refining benzene Ethylene Fractionator condenser.
The feeding mouth of described Ethylbenzene hydrogen removal system connects the outlet of steam superheater, the connection ethylbenzene dehydrogenation of ethylbenzene feeding pipe
System.
The utility model ethylbenzene dehydrogenation technology uses low water hydrocarbon ratio (1.0 or so), and phenyl ethylene rectification uses styrene
Rectification process twice need to be only heated, i.e., is first separated ethylbenzene and styrene in crude styrene tower, benzene, toluene and the second of tower top
Benzene is separated benzene and toluene with ethylbenzene into ethylbenzene tower, and benzene and toluene enter back into benzene toluene tower and further separated.Crude benzol second
Alkene materials at bottom of tower enters phenyl ethylene rectification tower, styrene is separated with heavy constituent, tower top obtains product styrene.Crude styrene tower
Using double tower coupling energy-saving technology, i.e., a crude styrene tower is divided into two high-low pressure towers, the tower overhead gas of high-pressure tower is as low
The reboiler thermal source of tower is pressed, high-pressure tower overhead condenser circulation water consumption had both been saved, lower pressure column reboiler steam is saved again
Consumption.Energy-saving effect is notable, simultaneously because not using ethylbenzene and water azeotropic vaporization technology, it is possible to reduce ethylbenzene evaporation reclaimed water
Content, makes it possible steam vapour amount in increasing steam superheater.Low water hydrocarbon ratio (1.0 is used in ethylbenzene dehydrogenation technology
Left and right) in the case of, the outlet temperature of steam superheater can be below 840 DEG C.Also make using lower water ratio to turn into from now on
May.
The beneficial effects of the utility model are：
Phenyl ethylene rectification need to only heat rectification process twice using styrene, and crude styrene tower uses double tower coupling energy-saving
Technology, ethylbenzene and a small amount of water are heated and vaporized through waste heat exchanger, and compared with azeotropic, water is greatly decreased.Therefore, in Zong Shui
Hydrocarbon is than that in the case of constant, can increase steam superheater quantity of steam, to reduce steam superheating heater outlet temperature.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model.
In figure：1st, steam superheater；2nd, Ethylbenzene hydrogen removal system；3rd, crude styrene high-pressure tower；4th, tower overhead gas efferent duct；5th, it is low
Press tower reboiler；6th, crude styrene lower pressure column；7th, lower pressure column condenser；8th, ethylbenzene tower；9th, ethylbenzene tower condenser；10th, refining benzene second
Alkene tower；11st, refining benzene Ethylene Fractionator condenser；12nd, high-pressure tower reboiler；13rd, ethylbenzene tower discharge nozzle.
Embodiment
The utility model is described further below in conjunction with the accompanying drawings：
As shown in figure 1, styrene production energy-saving device described in the utility model, including crude styrene high-pressure tower 3 and thick
The upper feed inlet of styrene lower pressure column 6, crude styrene high-pressure tower 3 and crude styrene lower pressure column 6 connects second by pipeline respectively
The bottom discharge mouthful of the discharging opening of benzene dehydrogenation system 2, crude styrene high-pressure tower 3 and crude styrene lower pressure column 6 is respectively communicated with refining benzene
Ethylene column 10, the bottom connection high-pressure tower reboiler 12 of crude styrene high-pressure tower 3, the bottom connection of crude styrene lower pressure column 6 is low
Tower reboiler 5 is pressed, the tower top of crude styrene high-pressure tower 3 connects the charging aperture of ethylbenzene tower 8, tower overhead gas output by tower overhead gas efferent duct 4
The connection lower pressure column of pipe 4 reboiler 5, the tower top of crude styrene lower pressure column 6 connection lower pressure column condenser 7, lower pressure column condenser 7 is exported
Connected respectively with crude styrene low pressure column overhead, the charging aperture of ethylbenzene tower 8, the tower top of ethylbenzene tower 8 connection ethylbenzene tower condenser 9, ethylbenzene
The discharging opening of tower condenser 9 is connected with the tower top of ethylbenzene tower 8, ethylbenzene tower discharge nozzle 13 respectively, and the bottom of towe of refining benzene ethylene column 10 is tar pipe,
Top connection refining benzene Ethylene Fractionator condenser 11.The feeding mouth of Ethylbenzene hydrogen removal system 2 connects the outlet of steam superheater 1, and ethylbenzene enters
Expects pipe connects Ethylbenzene hydrogen removal system 2.
Crude styrene tower uses double tower coupling energy-saving technology, i.e., a crude styrene tower is divided into two high-low pressure towers, high
The tower overhead gas of tower is pressed as the reboiler thermal source of lower pressure column, high-pressure tower overhead condenser circulation water consumption had both been saved, and had saved again
Lower pressure column reboiler 5 steam consumption.Energy-saving effect is notable, simultaneously because ethylbenzene and water azeotropic vaporization technology are not used, can
To reduce the content that ethylbenzene evaporates reclaimed water, make it possible steam vapour amount in increasing steam superheater 1.In ethylbenzene dehydrogenation technique
In the case that technology uses low water hydrocarbon ratio (1.0 or so), the outlet temperature of steam superheater 1 can be below 840 DEG C.Also the present is made
It is possibly realized afterwards using lower water ratio.
Claims (2)
1. a kind of styrene production energy-saving device, it is characterised in that：Including crude styrene high-pressure tower (3) and crude styrene lower pressure column
(6), the upper feed inlet of crude styrene high-pressure tower (3) and crude styrene lower pressure column (6) connects ethylbenzene dehydrogenation by pipeline respectively
The bottom discharge mouthful of the discharging opening of system (2), crude styrene high-pressure tower (3) and crude styrene lower pressure column (6) is respectively communicated with refining benzene
Ethylene column (10), the bottom connection high-pressure tower reboiler (12) of crude styrene high-pressure tower (3), the bottom of crude styrene lower pressure column (6)
Portion's connection lower pressure column reboiler (5), crude styrene high-pressure tower (3) tower top connects ethylbenzene tower (8) by tower overhead gas efferent duct (4) and entered
Material mouth, tower overhead gas efferent duct (4) connection lower pressure column reboiler (5), crude styrene lower pressure column (6) tower top connection lower pressure column condenser
(7), lower pressure column condenser (7) outlet is connected with crude styrene low pressure column overhead, ethylbenzene tower charging aperture respectively, ethylbenzene tower (8) tower
Top connection ethylbenzene tower condenser (9), ethylbenzene tower condenser (9) discharging opening respectively with ethylbenzene column overhead, ethylbenzene tower discharge nozzle (13)
Connection, refining benzene ethylene column (10) bottom of towe is tar pipe, top connection refining benzene Ethylene Fractionator condenser (11).
2. styrene production energy-saving device according to claim 1, it is characterised in that：The pan feeding of Ethylbenzene hydrogen removal system (2)
The outlet of mouth connection steam superheater (1), ethylbenzene feeding pipe connection Ethylbenzene hydrogen removal system (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621289405.2U CN206375840U (en) | 2016-11-28 | 2016-11-28 | Styrene production energy-saving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621289405.2U CN206375840U (en) | 2016-11-28 | 2016-11-28 | Styrene production energy-saving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206375840U true CN206375840U (en) | 2017-08-04 |
Family
ID=59406567
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621289405.2U Withdrawn - After Issue CN206375840U (en) | 2016-11-28 | 2016-11-28 | Styrene production energy-saving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206375840U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106631663A (en) * | 2016-11-28 | 2017-05-10 | 山东齐鲁石化工程有限公司 | Energy-saving styrene production device |
-
2016
- 2016-11-28 CN CN201621289405.2U patent/CN206375840U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106631663A (en) * | 2016-11-28 | 2017-05-10 | 山东齐鲁石化工程有限公司 | Energy-saving styrene production device |
| CN106631663B (en) * | 2016-11-28 | 2023-06-27 | 山东齐鲁石化工程有限公司 | Energy-saving styrene production device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20170804 Effective date of abandoning: 20230627 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20170804 Effective date of abandoning: 20230627 |