CN107400202A - Fresh EG through gathering cold well to the feed system of slurry mix tank eventually - Google Patents
Fresh EG through gathering cold well to the feed system of slurry mix tank eventually Download PDFInfo
- Publication number
- CN107400202A CN107400202A CN201610330787.7A CN201610330787A CN107400202A CN 107400202 A CN107400202 A CN 107400202A CN 201610330787 A CN201610330787 A CN 201610330787A CN 107400202 A CN107400202 A CN 107400202A
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- CN
- China
- Prior art keywords
- fresh
- eventually
- cold well
- slurry mix
- tanks
- 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.)
- Pending
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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)
- Polyesters Or Polycarbonates (AREA)
Abstract
The present invention relates to a kind of fresh EG through gathering cold well eventually to the feed system of slurry mix tank, it is characterised in that it includes continuous polymerization EG tanks（11）, slurry mix tank（12）, eventually gather cold well（20）And fresh EG tank（23）, fresh EG tank（23）Discharging opening be connected to eventually gather cold well（20）On the pipeline of discharging opening connection.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 gathering cold well eventually 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 gathering cold well eventually.
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 gathering cold well eventually to the feed system of slurry mix tank.
The object of the present invention is achieved like this：
A kind of fresh EG through gathering cold well to the feed system of slurry mix tank eventually, it is characterised in that and it includes continuous polymerization EG tanks, slurry mix tank, gathers cold well and fresh EG tank eventually,
The discharging opening for gathering cold bottom eventually connects pipeline, and the pipeline separates the charging aperture of two bye-pass connecting plate type heat exchangers again, wherein a bye-pass is also connected to the charging aperture of continuous polymerization EG tank tops by other adapter roadside,
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 discharging opening of fresh EG tank is connected to eventually on the pipeline of poly- cold well discharging opening connection.
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 through whole cold well to the feed system of slurry mix tank that gathers, 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 gathering cold well eventually to the structural representation of the feed system of slurry mix tank.
Embodiment
Referring to Fig. 1, through gathering cold well eventually to the feed system of slurry mix tank, it includes continuous polymerization EG tanks 11, slurry mix tank 12, gathers cold well 20 and fresh EG tank 23 eventually a kind of fresh EG of the present invention.
Wherein：
The discharging opening for gathering the cold bottom of well 20 eventually connects pipeline, three delivery pumps of parallel connection are provided with the pipeline, the pipeline at three delivery pump rears separates the charging aperture of two bye-pass connecting plate type heat exchangers again, wherein a bye-pass is also connected to the charging aperture at the top of continuous polymerization EG tanks 11 by other adapter roadside.
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 discharging opening of fresh EG tank 23 is connected to eventually on the pipeline of the poly- cold discharging opening of well 20 connection.
Claims (1)
1. a kind of fresh EG through gathering cold well to the feed system of slurry mix tank eventually, it is characterised in that it includes continuous polymerization EG tanks（11）, slurry mix tank（12）, eventually gather cold well（20）And fresh EG tank（23）,
Gather cold well eventually（20）The discharging opening of bottom connects pipeline, and the pipeline separates the charging aperture of two bye-pass connecting plate type heat exchangers again, wherein a bye-pass is also connected to continuous polymerization EG tanks by side adapter roadside（11）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）Discharging opening be connected to eventually gather cold well（20）On the pipeline of discharging opening connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330787.7A CN107400202A (en) | 2016-05-18 | 2016-05-18 | Fresh EG through gathering cold well to the feed system of slurry mix tank eventually |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330787.7A CN107400202A (en) | 2016-05-18 | 2016-05-18 | Fresh EG through gathering cold well to the feed system of slurry mix tank eventually |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107400202A true CN107400202A (en) | 2017-11-28 |
Family
ID=60394200
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610330787.7A Pending CN107400202A (en) | 2016-05-18 | 2016-05-18 | Fresh EG through gathering cold well to the feed system of slurry mix tank eventually |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107400202A (en) |
-
2016
- 2016-05-18 CN CN201610330787.7A patent/CN107400202A/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 |