CN206544988U - A kind of glycol recycling system for polyester industrial - Google Patents
A kind of glycol recycling system for polyester industrial Download PDFInfo
- Publication number
- CN206544988U CN206544988U CN201720185557.6U CN201720185557U CN206544988U CN 206544988 U CN206544988 U CN 206544988U CN 201720185557 U CN201720185557 U CN 201720185557U CN 206544988 U CN206544988 U CN 206544988U
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- Prior art keywords
- tower
- glycol
- ethylene glycol
- recycling
- glycol recycling
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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)
Abstract
The utility model is related to a kind of glycol recycling system for polyester industrial, including glycol recycling tower, the glycol recycling tower bottom end is sequentially connected filter and bottom of towe delivery pump, the bottom of towe conveying pump output terminal is connected to the bottom of glycol recycling tower, the glycol recycling tower top end is sequentially connected condenser and return tank, the return tank outlet is connected to glycol recycling tower top, glycol recycling tower bottom is esterified mixed vapour by feeding line connection one respectively, class mixed vapour and thick ethylene glycol, the tower internals of the ethylene glycol recovery tower includes board-like tower tray, structured packing and the heating coil of bottom, the heating coil connects high-temperature liquid-phase heating agent, low temperature liquid phase heating agent is exported and liquid phase heating agent floss hole.The tower internals of ethylene glycol recovery tower is imitated using 3 pieces of board-like tower trays and 22 floor heights regular fills out composition, the ethylene glycol quality that ethylene glycol recovery tower bottom is reclaimed after implementation is promoted to 99.0% content by original 97.5% content, and reflux ratio more than 20% is reduced than former plate column, save the energy.
Description
Technical field
The utility model belongs to the application field of polyester industrial, more particularly to a kind of ethylene glycol for polyester industrial again
Raw system.
Background technology
There is a kind of polyester product to be in polyester industrial：Used in polyethylene terephthalate (PET), its production process
The primary raw material arrived is terephthalic acid (TPA) and ethylene glycol, can produce water in its course of reaction and form mixed with unreacted ethylene glycol
Solution is closed, in later separation.And the recycling utilization of ethylene glycol, and normal operation to polyester device and consumption of raw materials are extremely
It is important.
Ethylene glycol recovery tower is equipment critically important during polyester industrial is produced, and its effect is the mixture to ethylene glycol and water
Separated, the problem of existing ethylene glycol recovery tower has inferior separating effect, reflux ratio is high.
The content of the invention
The utility model aim to solve the problem that drawbacks described above there is provided a kind of production cost is low, simple to operate, operating cost is low,
The high glycol recycling system for polyester industrial of separative efficiency.
In order to overcome defect present in background technology, the utility model solves the technical scheme that its technical problem is used
It is：A kind of glycol recycling system for polyester industrial, including glycol recycling tower, the glycol recycling tower bottom end according to
Secondary connection filter and bottom of towe delivery pump, the bottom of towe conveying pump output terminal are connected to the bottom of glycol recycling tower, the second
Glycol regenerator top is sequentially connected condenser and return tank, and the return tank outlet is connected to glycol recycling tower top, second
Glycol regenerator bottom is esterified mixed vapour, class mixed vapour and thick ethylene glycol, institute by feeding line connection one respectively
Stating the tower internals of ethylene glycol recovery tower includes board-like tower tray, structured packing and the heating coil of bottom, the heating coil connection
High-temperature liquid-phase heating agent, the outlet of low temperature liquid phase heating agent and liquid phase heating agent floss hole.
In a preferred embodiment of the present utility model, condenser connection cooling back installation.
In a preferred embodiment of the present utility model, ethylene glycol delivery pipe is connected at filter bottom end, is easy to collect
Ethylene glycol.
In a preferred embodiment of the present utility model, return tank bottom end connection wastewater discharge pipe, by ethylene glycol point
The waste water discharge separated out.
The beneficial effects of the utility model are：The tower internals of ethylene glycol recovery tower is imitated using 3 pieces of board-like tower trays and 22 floor heights
The regular ethylene glycol quality for filling out ethylene glycol recovery tower bottom recovery after composition, implementation is promoted to 99. 0% by original 97. 5% content
Content, and reduce reflux ratio more than 20% than former plate column, saved the energy.
Brief description of the drawings
The utility model is further illustrated with reference to the accompanying drawings and examples.
Fig. 1 is structural representation of the present utility model.
Embodiment
Preferred embodiment of the present utility model is described in detail below in conjunction with the accompanying drawings, so that advantage of the present utility model
It can be easier to be readily appreciated by one skilled in the art with feature, so as to make protection domain of the present utility model apparent clear and definite
Define.
A kind of glycol recycling system for polyester industrial as shown in Figure 1, including glycol recycling tower 1, ethylene glycol is again
The raw bottom end of tower 1 is sequentially connected filter 2 and bottom of towe delivery pump 3, and the output end of bottom of towe delivery pump 3 is connected to glycol recycling
The bottom of tower 1, after glycol recycling tower sub-material ethylene glycol, is filtered collection ethylene glycol, the mixing containing ethylene glycol is molten
Liquid is pumped to glycol recycling tower through bottom of towe conveying and separated again, and the top of glycol recycling tower 1 is sequentially connected condenser 4 and backflow
Tank 5, the outlet of return tank 5 is connected to the top of glycol recycling tower 1, is passed through after the condensed device condensation of glycol steam of high temperature by flowing back
Tank is back in glycol recycling tower, and the bottom of glycol recycling tower 1 is esterified mixed vapour, two by feeding line connection one respectively
Mixed vapour and thick ethylene glycol are esterified, the tower internals of the ethylene glycol recovery tower includes 3 pieces of board-like tower trays 11,22 layers of structured packing
12 and the heating coil 13 of bottom, the heating coil connection high-temperature liquid-phase heating agent, the outlet of low temperature liquid phase heating agent and liquid phase heating agent
Floss hole；Condenser connects cooling back installation；Ethylene glycol delivery pipe is connected at filter bottom end, ethylene glycol after filtering can
Discharge is reclaimed；Return tank bottom end connects wastewater discharge pipe, waste water is discharged, while the solution containing ethylene glycol is back to again
Glycol recycling tower.
Thermal source needed for separating ethylene glycol is provided by high-temperature liquid-phase heating agent through ethylene glycol recovery tower internal heating coils, cooling
Exported afterwards to low temperature liquid phase heating agent；Ethylene glycol recovery tower bottom of towe controls temperature to be 183 DEG C, and tower top control pressure is 0.5kpa.g,
Tower top controls temperature to be 100 DEG C；Condensator outlet temperature control is 40 DEG C；The ethylene glycol content that ethylene glycol recovery tower bottom is reclaimed>
99. 0%；Ethylene glycol content in waste water<0.05%.
Embodiment of the present utility model is the foregoing is only, the scope of the claims of the present utility model is not thereby limited, it is every
The equivalent structure or equivalent flow conversion made using the utility model specification and accompanying drawing content, or be directly or indirectly used in
Other related technical fields, are similarly included in scope of patent protection of the present utility model.
Claims (4)
1. a kind of glycol recycling system for polyester industrial, it is characterised in that：Including glycol recycling tower, the ethylene glycol
Regenerator bottom end is sequentially connected filter and bottom of towe delivery pump, and the bottom of towe conveying pump output terminal is connected to glycol recycling tower
Bottom, the glycol recycling tower top end is sequentially connected condenser and return tank, and the return tank outlet is connected to ethylene glycol
Regenerator top, glycol recycling tower bottom is esterified mixed vapour, class mixed vapour by feeding line connection one respectively
With thick ethylene glycol, the tower internals of the ethylene glycol recovery tower includes board-like tower tray, structured packing and the heating coil of bottom, described
Heating coil connection high-temperature liquid-phase heating agent, the outlet of low temperature liquid phase heating agent and liquid phase heating agent floss hole.
2. it is used for the glycol recycling system of polyester industrial according to claim 1, it is characterised in that：The condenser connection
Cooling back installation.
3. it is used for the glycol recycling system of polyester industrial according to claim 1, it is characterised in that：The filter bottom end
Place's connection ethylene glycol delivery pipe.
4. it is used for the glycol recycling system of polyester industrial according to claim 1, it is characterised in that：The return tank bottom
Place's connection wastewater discharge pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720185557.6U CN206544988U (en) | 2017-02-28 | 2017-02-28 | A kind of glycol recycling system for polyester industrial |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720185557.6U CN206544988U (en) | 2017-02-28 | 2017-02-28 | A kind of glycol recycling system for polyester industrial |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206544988U true CN206544988U (en) | 2017-10-10 |
Family
ID=59994890
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720185557.6U Active CN206544988U (en) | 2017-02-28 | 2017-02-28 | A kind of glycol recycling system for polyester industrial |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206544988U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112625221A (en) * | 2020-12-26 | 2021-04-09 | 扬州普立特科技发展有限公司 | Production equipment for producing PBT (polybutylene terephthalate) by recycling polyester to regenerate BHET (BHET) |
-
2017
- 2017-02-28 CN CN201720185557.6U patent/CN206544988U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112625221A (en) * | 2020-12-26 | 2021-04-09 | 扬州普立特科技发展有限公司 | Production equipment for producing PBT (polybutylene terephthalate) by recycling polyester to regenerate BHET (BHET) |
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| GR01 | Patent grant |