CN107400215A - The spray EG cyclers of final polymerization tank - Google Patents
The spray EG cyclers of final polymerization tank Download PDFInfo
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- CN107400215A CN107400215A CN201610330788.1A CN201610330788A CN107400215A CN 107400215 A CN107400215 A CN 107400215A CN 201610330788 A CN201610330788 A CN 201610330788A CN 107400215 A CN107400215 A CN 107400215A
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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
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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
- C08G63/78—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 spray EG cyclers of final polymerization tank, it is characterised in that it includes plate type heat exchanger（9）, hot well overflow tank（10）, continuous polymerization EG tanks（11）, slurry mix tank（12）, 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 cyclers 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 to be recycled, the spray EG cyclers 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 cyclers of the final polymerization tank of utilization ratio.
The object of the present invention is achieved like this：
A kind of spray EG cyclers of final polymerization tank, it is characterized in that it include plate type heat exchanger, hot well overflow tank, continuous polymerization EG tanks, slurry mix tank, 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, 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- 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, 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 again, a wherein bye-pass is also connected to the charging aperture of continuous polymerization EG tank tops by other adapter roadside, side is provided with the first fluid level control valve on adapter road, the charging aperture of the whole poly- two level spray equipment of discharging opening connection of plate type heat exchanger
The overfall of poly- preheater hypomere connects the charging aperture of hot well overflow tank by pipeline eventually,
The second discharging opening of poly- preheater bottom, the eventually discharging opening of poly- screw rod transmission motor spindle and the discharging opening of hot well overflow pot bottom connect a bye-pass eventually, 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 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,
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, the main pipe rail connects the charging aperture of slurry mix tank, the refluxing opening of continuous polymerization EG tanks is also connected on the main pipe rail by return line
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, the end of first bye-pass is provided with the first flow transmitter and first flow control valve of front and rear arrangement, Article 2 bye-pass is connected to the charging aperture at the top of whole heat build-up well, the end of Article 2 bye-pass is provided with the second flow transmitter and second flow control valve of front and rear arrangement
Gather cold well fluid level transmitter eventually in addition, gathering to be provided with cold well eventually,
Continuous polymerization EG tank fluid level transmitters are provided with continuous polymerization EG tanks,
Wherein, the signal of continuous polymerization EG tanks fluid level transmitter passes to HS, then passes to LIC, then passes to FIC, and the signal that FIC is passed to second flow transmitter converges, so as to control the aperture of second flow control valve；
The signal for gathering cold well fluid level transmitter eventually passes to LIC, so as to control the aperture of the first fluid level control valve；
The signal of first flow transmitter passes to LIC, so as to control the aperture of first flow control valve.
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 cyclers 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 cyclers of final polymerization tank of the present invention.
Fig. 2 is the signal control schematic diagram of poly- pressure transmitter and poly- pressure-regulating valve eventually eventually.
Fig. 3 is continuous polymerization EG tanks fluid level transmitter, second flow transmitter and the signal control schematic diagram of second flow control valve.
Fig. 4 is the signal control schematic diagram for gathering cold well fluid level transmitter and the first fluid level control valve eventually.
Fig. 5 is first flow transmitter and the signal control schematic diagram of first flow control valve.
Embodiment
Referring to Fig. 1 ~ Fig. 5, a kind of spray EG cyclers of final polymerization tank of the present invention, it include plate type heat exchanger 9, hot well overflow tank 10, continuous polymerization EG tanks 11, slurry mix tank 12, 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.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 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 again, a wherein bye-pass is also connected to the charging aperture at the top of continuous polymerization EG tanks 11 by other adapter roadside, the first fluid level control valve, the charging aperture of the whole poly- two level spray equipment 15 of discharging opening connection of plate type heat exchanger 9 are provided with the adapter road of side.
The overfall of the poly- hypomere of preheater 17 connects the charging aperture of hot well overflow tank 10 by pipeline eventually.
The second discharging opening of the poly- bottom of preheater 17, the eventually discharging opening of poly- screw rod transmission motor spindle and the discharging opening of the bottom of hot well overflow tank 10 connect a bye-pass eventually, 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 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.
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.
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, the end of first bye-pass is provided with the first flow transmitter and first flow control valve of front and rear arrangement, Article 2 bye-pass is connected to the charging aperture at the whole top of heat build-up well 16, and the end of Article 2 bye-pass is provided with the second flow transmitter and second flow control valve of front and rear arrangement.
Gather cold well fluid level transmitter eventually in addition, gathering to be provided with cold well 20 eventually,
Continuous polymerization EG tank fluid level transmitters are provided with continuous polymerization EG tanks 11,
Wherein, the signal of continuous polymerization EG tanks fluid level transmitter passes to HS（Manually-operated gate）, then pass to LIC（Fluid level controller）, then FIC is passed to, pass to FIC with second flow transmitter（Flow controller）Signal converge, so as to control the aperture of second flow control valve；
The signal for gathering cold well fluid level transmitter eventually passes to LIC, so as to control the aperture of the first fluid level control valve；
The signal of first flow transmitter passes to LIC, so as to control the aperture of first flow control valve.
Claims (4)
1. the spray EG cyclers of a kind of final polymerization tank, it is characterised in that it includes plate type heat exchanger（9）, hot well overflow tank（10）, continuous polymerization EG tanks（11）, slurry mix tank（12）, 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- 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- 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 three delivery pumps of parallel connection are provided with the main pipe rail, and the main pipe rail at three delivery pump rears separates two bye-pass connecting plate type heat exchangers again（9）Charging aperture, wherein a bye-pass also by side adapter roadside be connected to continuous polymerization EG tanks（11）The charging aperture at top, side are provided with the first fluid level control valve, plate type heat exchanger on adapter road（9）Discharging opening connection poly- two level spray equipment eventually（15）Charging aperture,
Poly- preheater eventually（17）The overfall of hypomere connects hot well overflow tank by pipeline（10）Charging aperture,
Poly- preheater eventually（17）The discharging opening and hot well overflow tank of second discharging opening of bottom, eventually poly- 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,
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,
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, the main pipe rail connection slurry mix tank（12）Charging aperture, also pass through return line on the main pipe rail and connect continuous polymerization EG tanks（11）Refluxing opening,
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, the end of first bye-pass is provided with the first flow transmitter of front and rear arrangement and first flow control valve, Article 2 bye-pass are connected to whole heat build-up well（16）The charging aperture at top, the end of Article 2 bye-pass are provided with the second flow transmitter and second flow control valve of front and rear arrangement,
In addition, gather cold well eventually（20）On be provided with eventually gather cold well fluid level transmitter,
Continuous polymerization EG tanks（11）On be provided with continuous polymerization EG tank fluid level transmitters,
Wherein, the signal of continuous polymerization EG tanks fluid level transmitter passes to HS, then passes to LIC, then passes to FIC, and the signal that FIC is passed to second flow transmitter converges, so as to control the aperture of second flow control valve；
The signal for gathering cold well fluid level transmitter eventually passes to LIC, so as to control the aperture of the first fluid level control valve；
The signal of first flow transmitter passes to LIC, so as to control the aperture of first flow control valve.
A kind of 2. spray EG cyclers 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 cyclers 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 cyclers 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 |
|---|---|---|---|
| CN201610330788.1A CN107400215A (en) | 2016-05-18 | 2016-05-18 | The spray EG cyclers of final polymerization tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330788.1A CN107400215A (en) | 2016-05-18 | 2016-05-18 | The spray EG cyclers of final polymerization tank |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107400215A true CN107400215A (en) | 2017-11-28 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610330788.1A Pending CN107400215A (en) | 2016-05-18 | 2016-05-18 | The spray EG cyclers of final polymerization tank |
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| Country | Link |
|---|---|
| CN (1) | CN107400215A (en) |
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2016
- 2016-05-18 CN CN201610330788.1A patent/CN107400215A/en active Pending
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Application publication date: 20171128 |