CN107400223A - The spray EG circulatory systems of final polymerization tank - Google Patents
The spray EG circulatory systems of final polymerization tank Download PDFInfo
- Publication number
- CN107400223A CN107400223A CN201610330845.6A CN201610330845A CN107400223A CN 107400223 A CN107400223 A CN 107400223A CN 201610330845 A CN201610330845 A CN 201610330845A CN 107400223 A CN107400223 A CN 107400223A
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- China
- Prior art keywords
- poly
- eventually
- discharging opening
- charging aperture
- spray equipment
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- 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)
- Polyesters Or Polycarbonates (AREA)
Abstract
The present invention relates to a kind of spray EG circulatory systems 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）, whole heat build-up well（16）, poly- preheater eventually（17）, poly- grade one filter group eventually（18）, poly- pipe heat exchanger group eventually（19）, eventually gather cold well（20）, fresh EG tank（23）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 spray EG circulatory systems of final polymerization tank.
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 and recycled, the spray EG circulatory 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 spray EG circulatory systems of the final polymerization tank of utilization ratio.
The object of the present invention is achieved like this：
A kind of spray EG circulatory systems of final polymerization tank, it is characterized in that it include plate type heat exchanger, final polymerization tank, eventually poly- one-level spray equipment, eventually poly- two level spray equipment, whole heat build-up well, eventually poly- preheater, eventually poly- grade one filter group, eventually poly- pipe heat exchanger group, poly- cold well, fresh EG tank and vacuumize unit eventually
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
The discharging opening of poly- one-level spray equipment bottom connects the charging aperture at the top of whole heat build-up well by pipeline eventually, the discharging opening of whole heat build-up bottom connects the charging aperture at the top of poly- preheater eventually by poly- screw rod conveyor eventually, the discharging opening of whole heat build-up well epimere also connects the charging aperture at the top of poly- preheater eventually by pipeline, the first discharging opening of poly- preheater bottom connects the charging aperture of poly- filter group eventually by pipeline eventually, the discharging opening of poly- filter group connects the charging aperture of poly- pipe heat exchanger eventually by pipeline eventually, the discharging opening of poly- pipe heat exchanger connects the charging aperture of poly- one-level spray equipment eventually by pipeline 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 again, the charging aperture of the whole poly- two level spray equipment of discharging opening connection of plate type heat exchanger
The discharge gate of poly- grade one filter group bottom is connected the charging aperture at the top of whole heat build-up well by a bye-pass respectively with the discharge gate of poly- pipe heat exchanger group bottom eventually eventually,
Three bye-passes are separated on the main pipe rail that the discharging opening of fresh EG tank connects, first bye-pass is connected to eventually on the bye-pass of poly- cold well discharging opening connection, and Article 2 bye-pass is connected to the charging aperture at the top of whole heat build-up well.
Poly- grade one filter group is parallel with two end poly- grade one filters eventually；
Poly- pipe heat exchanger group has three end poly- pipe heat exchangers eventually, and three end poly- pipe heat exchangers control series, parallel or connection in series-parallel syntagmatic by the break-make of multiple shutoff valves；
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 spray EG circulatory 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 the structural representation of the spray EG circulatory systems of final polymerization tank of the present invention.
Embodiment
Referring to Fig. 1, a kind of spray EG circulatory systems of final polymerization tank of the present invention, it include plate type heat exchanger 9, final polymerization tank 13, eventually poly- one-level spray equipment 14, eventually poly- two level spray equipment 15, whole heat build-up well 16, eventually poly- preheater 17, eventually poly- grade one filter group 18, eventually poly- pipe heat exchanger group 19, poly- cold well 20, fresh EG tank 23 and vacuumize unit 24 eventually.
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；
Poly- grade one filter group 18 is parallel with two end poly- grade one filters eventually；
Poly- pipe heat exchanger group 19 has three end poly- pipe heat exchangers eventually, and three end poly- pipe heat exchangers control series, parallel or connection in series-parallel syntagmatic by the break-make of multiple shutoff valves；
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.
The discharging opening of the poly- bottom of one-level spray equipment 14 connects the charging aperture at the whole top of heat build-up well 16 by pipeline eventually, the discharging opening of the whole bottom of heat build-up well 16 connects the charging aperture at the poly- top of preheater 17 eventually by poly- screw rod conveyor eventually, the discharging opening of the whole epimere of heat build-up well 16 also connects the charging aperture at the poly- top of preheater 17 eventually by pipeline, the first discharging opening of the poly- bottom of preheater 17 connects the charging aperture of poly- filter group 18 eventually by pipeline eventually, two delivery pumps have been arranged in parallel on the pipeline, the discharging opening of poly- filter group 18 connects the charging aperture of poly- pipe heat exchanger 19 eventually by pipeline eventually, the discharging opening of poly- pipe heat exchanger 19 connects the charging aperture of poly- one-level spray equipment 14 eventually by pipeline 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.
The discharge gate of the poly- bottom of grade one filter group 18 is connected the charging aperture at the whole top of heat build-up well 16 with the discharge gate of the poly- bottom of pipe heat exchanger group 19 eventually by a bye-pass respectively eventually.
Three bye-passes are separated on the main pipe rail that the discharging opening of fresh EG tank 23 connects, first bye-pass is connected to eventually on the bye-pass of the poly- cold discharging opening of well 20 connection, and Article 2 bye-pass is connected to the charging aperture at the whole top of heat build-up well 16.
Claims (4)
1. the spray EG circulatory 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）, whole heat build-up well（16）, poly- preheater eventually（17）, poly- grade one filter group eventually（18）, poly- pipe heat exchanger group eventually（19）, eventually gather cold well（20）, fresh EG tank（23）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- one-level spray equipment eventually（14）The discharging opening of bottom connects whole heat build-up well by pipeline（16）The charging aperture at top, whole heat build-up well（16）The discharging opening of bottom connects poly- preheater eventually by poly- screw rod conveyor eventually（17）The charging aperture at top, whole heat build-up well（16）The discharging opening of epimere also connects poly- preheater eventually by pipeline（17）The charging aperture at top, whole poly- preheater（17）First discharging opening of bottom connects poly- filter group eventually by pipeline（18）Charging aperture, poly- filter group eventually（18）Discharging opening pass through pipeline connection poly- pipe heat exchanger eventually（19）Charging aperture, poly- pipe heat exchanger eventually（19）Discharging opening pass through pipeline connection poly- one-level spray equipment eventually（14）Charging aperture,
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,
Poly- grade one filter group eventually（18）The discharge gate of bottom and poly- pipe heat exchanger group eventually（19）The discharge gate of bottom connects whole heat build-up well by a bye-pass respectively（16）The charging aperture at top,
Fresh EG tank（23）The main pipe rail that connects of discharging opening on separate three bye-passes, first bye-pass is connected to gathers cold well eventually（20）On the bye-pass of discharging opening connection, Article 2 bye-pass is connected to whole heat build-up well（16）The charging aperture at top.
A kind of 2. spray EG circulatory systems of final polymerization tank according to claim 1, it is characterised in that poly- grade one filter group eventually（18）It is parallel with two end poly- grade one filters.
A kind of 3. spray EG circulatory systems of final polymerization tank according to claim 1, it is characterised in that poly- pipe heat exchanger group eventually（19）There are three end poly- pipe heat exchangers, three end poly- pipe heat exchangers control series, parallel or connection in series-parallel syntagmatic by the break-make of multiple shutoff valves.
A kind of 4. spray EG circulatory 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 |
|---|---|---|---|
| CN201610330845.6A CN107400223A (en) | 2016-05-18 | 2016-05-18 | The spray EG circulatory systems of final polymerization tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330845.6A CN107400223A (en) | 2016-05-18 | 2016-05-18 | The spray EG circulatory systems of final polymerization tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107400223A true CN107400223A (en) | 2017-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610330845.6A Pending CN107400223A (en) | 2016-05-18 | 2016-05-18 | The spray EG circulatory systems of final polymerization tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107400223A (en) |
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2016
- 2016-05-18 CN CN201610330845.6A patent/CN107400223A/en active Pending
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20171128 |