CN107400212A - Fresh EG is through stablizing EG tanks to the feed system of slurry mix tank - Google Patents
Fresh EG is through stablizing EG tanks to the feed system of slurry mix tank Download PDFInfo
- Publication number
- CN107400212A CN107400212A CN201610330750.4A CN201610330750A CN107400212A CN 107400212 A CN107400212 A CN 107400212A CN 201610330750 A CN201610330750 A CN 201610330750A CN 107400212 A CN107400212 A CN 107400212A
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- CN
- China
- Prior art keywords
- polymerization
- tanks
- discharging opening
- charging aperture
- tank
- Prior art date
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Classifications
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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 fresh EG through stablizing EG tanks to the feed system of slurry mix tank, it is characterised in that it includes pre-polymerization hot well（4）, pre-polymerization preheater（5）, hot well overflow tank（10）, continuous polymerization EG tanks（11）, slurry mix tank（12）, stable EG tanks（22）And fresh EG tank（23）, fresh EG tank（23）The pipeline that connects of discharging opening be connected to stable EG tanks（22）The charging aperture at top.The present invention has the advantages of recycling spray EG, improving utilization ratio.
Description
Technical field
The present invention relates to a kind of fresh EG through stablizing EG tanks to the feed system of slurry mix 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, do not directly fed in fresh EG into slurry mix tank, but slurry mix tank is reentered after being mixed with spray EG.Therefore seek a kind of EG that will spray to be recycled, the fresh EG for improving utilization ratio is particularly important to the feed system of slurry mix tank through stablizing EG tanks.
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, the fresh EG of utilization ratio is improved through stablizing EG tanks to the feed system of slurry mix tank.
The object of the present invention is achieved like this：
A kind of fresh EG is through stablizing EG tanks to the feed system of slurry mix tank, it is characterised in that and it includes pre-polymerization hot well, pre-polymerization preheater, hot well overflow tank, continuous polymerization EG tanks, slurry mix tank, stable EG tanks and fresh EG tank,
The discharging opening of pre-polymerization hot well bottom connects the charging aperture at the top of pre-polymerization preheater by pre-polymerization screw rod conveyor, the discharging opening of pre-polymerization hot well epimere also connects the charging aperture at the top of pre-polymerization preheater by pipeline, first discharging opening of pre-polymerization preheater bottom connects the charging aperture of pre-polymerization filter group by pipeline
The overfall of pre-polymerization preheater hypomere connects the charging aperture of hot well overflow tank by a pipeline,
The discharging opening of second discharging opening of pre-polymerization preheater bottom, the discharging opening of pre-polymerization screw rod transmission motor spindle and hot well overflow pot bottom connects a bye-pass, this three bye-passes are merged into a main pipe rail and then the charging aperture towards continuous polymerization EG tank tops, a bye-pass is also separated on the main pipe rail, the bye-pass connects thick EG tanks
The discharging opening of stable EG tanks connects the charging aperture at the top of pre-polymerization hot well by pipeline,
The discharging opening of continuous polymerization EG pot bottoms is connected by a bye-pass with the overfall of continuous polymerization EG tanks and merges into main pipe rail respectively, two delivery pumps of parallel connection are provided with the main pipe rail, the charging aperture of the main pipe rail connection slurry mix tank at delivery pump rear, the refluxing opening of continuous polymerization EG tanks is also connected on the main pipe rail at delivery pump rear by return line
The pipeline that the discharging opening of fresh EG tank connects is connected to the charging aperture of stable EG tank tops.
Compared with prior art, the beneficial effects of the invention are as follows：
Fresh EG of the present invention has the advantages of recycling spray EG, improving utilization ratio to the feed system of slurry mix tank through stablizing EG tanks, and has the advantages of auto-adjustment control performance is high.
Brief description of the drawings
Fig. 1 is fresh EG of the present invention through stablizing EG tanks to the structural representation of the feed system of slurry mix tank.
Embodiment
Referring to Fig. 1, for a kind of fresh EG of the present invention through stablizing EG tanks to the feed system of slurry mix tank, it includes pre-polymerization hot well 4, pre-polymerization preheater 5, hot well overflow tank 10, continuous polymerization EG tanks 11, slurry mix tank 12, stable EG tanks 22 and fresh EG tank 23.
Wherein：
The discharging opening of the bottom of pre-polymerization hot well 4 connects the charging aperture at the top of pre-polymerization preheater 5 by pre-polymerization screw rod conveyor, the discharging opening of the epimere of pre-polymerization hot well 4 also connects the charging aperture at the top of pre-polymerization preheater 5 by pipeline, first discharging opening of the bottom of pre-polymerization preheater 5 connects the charging aperture of pre-polymerization filter group by pipeline, and two delivery pumps have been arranged in parallel on the pipeline.
The overfall of the hypomere of pre-polymerization preheater 5 connects the charging aperture of hot well overflow tank 10 by a pipeline.
The discharging opening of second discharging opening of the bottom of pre-polymerization preheater 5, the discharging opening of pre-polymerization screw rod transmission motor spindle and the bottom of hot well overflow tank 10 connects a bye-pass, this three bye-passes are merged into a main pipe rail and then the charging aperture towards the top of continuous polymerization EG tanks 11, a delivery pump is provided with the main pipe rail, a bye-pass is also separated on the main pipe rail at delivery pump rear, the bye-pass connects thick EG tanks.
The discharging opening of stable EG tanks 22 connects the charging aperture at the top of pre-polymerization hot well 4 by pipeline.
The discharging opening of the bottom of continuous polymerization EG tanks 11 is connected by a bye-pass with the overfall of continuous polymerization EG tanks 11 and merges into main pipe rail respectively, two delivery pumps of parallel connection are provided with the main pipe rail, the main pipe rail at delivery pump rear connects the charging aperture of slurry mix tank 12, also passes through the refluxing opening that return line connects continuous polymerization EG tanks 11 on the main pipe rail at delivery pump rear.
The pipeline that the discharging opening of fresh EG tank 23 connects is connected to the charging aperture at the stable top of EG tanks 22.
Claims (1)
1. a kind of fresh EG is through stablizing EG tanks to the feed system of slurry mix tank, it is characterised in that it includes pre-polymerization hot well（4）, pre-polymerization preheater（5）, hot well overflow tank（10）, continuous polymerization EG tanks（11）, slurry mix tank（12）, stable EG tanks（22）And fresh EG tank（23）,
Pre-polymerization hot well（4）The discharging opening of bottom connects pre-polymerization preheater by pre-polymerization screw rod conveyor（5）The charging aperture at top, pre-polymerization hot well（4）The discharging opening of epimere also connects pre-polymerization preheater by pipeline（5）The charging aperture at top, pre-polymerization preheater（5）First discharging opening of bottom connects the charging aperture of pre-polymerization filter group by pipeline,
Pre-polymerization preheater（5）The overfall of hypomere connects hot well overflow tank by a pipeline（10）Charging aperture,
Pre-polymerization preheater（5）Second discharging opening of bottom, the discharging opening and hot well overflow tank of pre-polymerization screw rod transmission motor spindle（10）The discharging opening of bottom connects a bye-pass, and this three bye-passes are merged into a main pipe rail and then lead to continuous polymerization EG tanks（11）The charging aperture at top, a bye-pass also being separated on the main pipe rail, the bye-pass connects thick EG tanks,
Stable EG tanks（22）Discharging opening pass through pipeline connect pre-polymerization hot well（4）The charging aperture at top,
Continuous polymerization EG tanks（11）The discharging opening of bottom and continuous polymerization EG tanks（11）Overfall connected respectively by a bye-pass and merge into main pipe rail, be provided with the main pipe rail parallel connection two delivery pumps, delivery pump rear the main pipe rail connection slurry mix tank（12）Charging aperture, also pass through return line on the main pipe rail at delivery pump rear and connect continuous polymerization EG tanks（11）Refluxing opening,
Fresh EG tank（23）The pipeline that connects of discharging opening be connected to stable EG tanks（22）The charging aperture at top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330750.4A CN107400212A (en) | 2016-05-18 | 2016-05-18 | Fresh EG is through stablizing EG tanks to the feed system of slurry mix tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330750.4A CN107400212A (en) | 2016-05-18 | 2016-05-18 | Fresh EG is through stablizing EG tanks to the feed system of slurry mix tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107400212A true CN107400212A (en) | 2017-11-28 |
Family
ID=60394198
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610330750.4A Pending CN107400212A (en) | 2016-05-18 | 2016-05-18 | Fresh EG is through stablizing EG tanks to the feed system of slurry mix tank |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107400212A (en) |
-
2016
- 2016-05-18 CN CN201610330750.4A patent/CN107400212A/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 |
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| WD01 | Invention patent application deemed withdrawn after publication |