CN107400224A - The two level spray EG cyclic control systems of final polymerization tank - Google Patents
The two level spray EG cyclic control systems of final polymerization tank Download PDFInfo
- Publication number
- CN107400224A CN107400224A CN201610330858.3A CN201610330858A CN107400224A CN 107400224 A CN107400224 A CN 107400224A CN 201610330858 A CN201610330858 A CN 201610330858A CN 107400224 A CN107400224 A CN 107400224A
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- CN
- China
- Prior art keywords
- eventually
- poly
- level spray
- spray equipment
- polymerization tank
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- 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.)
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/78—Preparation processes
- C08G63/785—Preparation processes characterised by the apparatus used
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polymerisation Methods In General (AREA)
Abstract
The present invention relates to a kind of two level of final polymerization tank to spray EG cyclic control systems, it is characterised in that it includes plate type heat exchanger（9）, final polymerization tank（13）, poly- one-level spray equipment eventually（14）, poly- two level spray equipment eventually（15）, eventually gather cold well（20）And vacuumize unit（24）.The present invention has the advantages of recycling spray EG, improving utilization ratio.
Description
Technical field
The present invention relates to a kind of two level of final polymerization tank to spray EG cyclic control systems.
Background technology
Polyester belongs to high-molecular compound, is by terephthalic acid (TPA) and ethylene glycol（EG）Polyethylene terephthalate is produced by polycondensation（PET）, part PET therein ultimately generated by underwater cutpellet again.In PET Process is produced, need to spray using EG when prepolymerization reaction kettle and final polymerization tank carry out and vacuumize spray, because the EG amounts that EG sprays use are larger, therefore seek a kind of EG that will spray to be recycled, the two level spray EG cyclic control systems for improving the final polymerization tank of utilization ratio are particularly important.
The content of the invention
It is an object of the invention to overcome above-mentioned deficiency, there is provided and it is a kind of to be recycled spray EG, improve the two level spray EG cyclic control systems of the final polymerization tank of utilization ratio.
The object of the present invention is achieved like this：
A kind of two level of final polymerization tank sprays EG cyclic control systems, it is characterised in that and it includes plate type heat exchanger, final polymerization tank, whole poly- one-level spray equipment, whole poly- two level spray equipment, whole poly- cold well and vacuumizes unit,
Wherein：
The top of final polymerization tank is connected with the top of poly- one-level spray equipment eventually by poly- vacuum lead eventually, the bottom of poly- two level spray equipment is connected with the hypomere of poly- one-level spray equipment eventually by spraying connecting pipe eventually, the top of poly- two level spray equipment is connected with the top of poly- one-level spray equipment eventually and vacuumizes unit eventually, poly- pressure transmitter eventually is provided with poly- vacuum lead eventually, poly- pressure-regulating valve eventually is provided with the pipeline at the top of poly- two level spray equipment eventually, the signal of poly- pressure transmitter passes to poly- pressure controller eventually eventually, so as to control the aperture of poly- pressure-regulating valve eventually,
The discharging opening of poly- two level spray equipment bottom gathers the charging aperture at the top of cold well by pipeline connection eventually eventually, the discharging opening for gathering cold bottom eventually connects main pipe rail, the main pipe rail separates the charging aperture of two bye-pass connecting plate type heat exchangers, the charging aperture of the whole poly- two level spray equipment of discharging opening connection of plate type heat exchanger again.
Plate type heat exchanger has been arranged in parallel three plate type heat exchangers.
Compared with prior art, the beneficial effects of the invention are as follows：
The two level spray EG cyclic control systems of final polymerization tank of the present invention have the advantages of recycling spray EG, improving utilization ratio, and have the advantages of auto-adjustment control performance is high.
Brief description of the drawings
Fig. 1 is that the two level of final polymerization tank of the present invention sprays the structural representation of EG cyclic control systems.
Fig. 2 is the signal control schematic diagram of poly- pressure transmitter and poly- pressure-regulating valve eventually eventually.
Embodiment
Referring to Fig. 1 ~ Fig. 2, a kind of two level of final polymerization tank of the present invention sprays EG cyclic control systems, and it includes plate type heat exchanger 9, final polymerization tank 13, whole poly- one-level spray equipment 14, whole poly- two level spray equipment 15, whole poly- cold well 20 and vacuumizes unit 24.
Poly- one-level spray equipment 14 includes upper and lower two layers spray eventually；
Poly- two level spray equipment 15 includes upper and lower two layers spray eventually；
Plate type heat exchanger 9 has been arranged in parallel three plate type heat exchangers.
Wherein：
The top of final polymerization tank 13 is connected with the top of poly- one-level spray equipment 14 eventually by poly- vacuum lead eventually, the bottom of poly- two level spray equipment 15 is connected with the hypomere of poly- one-level spray equipment 14 eventually by spraying connecting pipe eventually, and the top of poly- two level spray equipment 15 is connected with the top of poly- one-level spray equipment 14 eventually and vacuumizes unit 24 eventually.Poly- pressure transmitter eventually is provided with poly- vacuum lead eventually, is provided with poly- pressure-regulating valve eventually on the pipeline at the poly- top of two level spray equipment 15 eventually, the signal of poly- pressure transmitter passes to poly- pressure controller eventually eventually, so as to control the aperture of poly- pressure-regulating valve eventually.
The discharging opening of the poly- bottom of two level spray equipment 15 gathers the charging aperture at the cold top of well 20 by pipeline connection eventually eventually, the discharging opening for gathering the cold bottom of well 20 eventually connects main pipe rail, three delivery pumps of parallel connection are provided with the main pipe rail, the main pipe rail at three delivery pump rears separates the charging aperture of two bye-pass connecting plate type heat exchangers 9, the charging aperture of the whole poly- two level spray equipment 15 of discharging opening connection of plate type heat exchanger 9 again.
Claims (2)
1. the two level spray EG cyclic control systems of a kind of final polymerization tank, it is characterised in that it includes plate type heat exchanger（9）, final polymerization tank（13）, poly- one-level spray equipment eventually（14）, poly- two level spray equipment eventually（15）, eventually gather cold well（20）And vacuumize unit（24）,
Wherein：
Final polymerization tank（13）Top and poly- one-level spray equipment eventually（14）Top pass through poly- vacuum lead eventually and connect, poly- two level spray equipment eventually（15）Bottom and poly- one-level spray equipment eventually（14）Hypomere connected by spraying connecting pipe, poly- two level spray equipment eventually（15）Top and poly- one-level spray equipment eventually（14）Top connection vacuumize unit（24）, poly- pressure transmitter eventually is provided with poly- vacuum lead eventually, eventually poly- two level spray equipment（15）Poly- pressure-regulating valve eventually is provided with the pipeline at top, the signal of poly- pressure transmitter passes to poly- pressure controller eventually eventually, so as to control the aperture of poly- pressure-regulating valve eventually,
Poly- two level spray equipment eventually（15）The discharging opening of bottom gathers cold well eventually by pipeline connection（20）The charging aperture at top, gather cold well eventually（20）The discharging opening of bottom connects main pipe rail, and the main pipe rail separates two bye-pass connecting plate type heat exchangers again（9）Charging aperture, plate type heat exchanger（9）Discharging opening connection poly- two level spray equipment eventually（15）Charging aperture.
A kind of 2. two level spray EG cyclic control systems of final polymerization tank according to claim 1, it is characterised in that plate type heat exchanger（9）It has been arranged in parallel three plate type heat exchangers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330858.3A CN107400224A (en) | 2016-05-18 | 2016-05-18 | The two level spray EG cyclic control systems of final polymerization tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330858.3A CN107400224A (en) | 2016-05-18 | 2016-05-18 | The two level spray EG cyclic control systems of final polymerization tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107400224A true CN107400224A (en) | 2017-11-28 |
Family
ID=60394217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610330858.3A Pending CN107400224A (en) | 2016-05-18 | 2016-05-18 | The two level spray EG cyclic control systems of final polymerization tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107400224A (en) |
-
2016
- 2016-05-18 CN CN201610330858.3A patent/CN107400224A/en active Pending
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171128 |
|
| WD01 | Invention patent application deemed withdrawn after publication |