CN105820323A - Continuous polymerization process EG circulation system - Google Patents
Continuous polymerization process EG circulation system Download PDFInfo
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- CN105820323A CN105820323A CN201610330879.5A CN201610330879A CN105820323A CN 105820323 A CN105820323 A CN 105820323A CN 201610330879 A CN201610330879 A CN 201610330879A CN 105820323 A CN105820323 A CN 105820323A
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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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- 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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- Polymerisation Methods In General (AREA)
Abstract
The invention relates to a continuous polymerization process EG circulation system .The system comprises a pre-polymerization reaction still (1), a primary pre-polymerization spray device (2), a secondary pre-polymerization spray device (3), a pre-polymerization hot well (4), a pre-polymerization preheater (5), a pre-polymerization filter set (6), a pre-polymerization tubular heat exchanger set (7), a pre-polymerization cold well (8), a plate heat exchanger (9), a hot well overflow tank (10), a continuous polymerization EG tank (11), a slurry mixing tank (12), a final polymerization reaction still (13), a primary final polymerization spray device (14), a secondary final polymerization spray device (15), a final polymerization hot well (16), a final polymerization preheater (17), a primary final polymerization filter set (18), a final polymerization tubular heat exchanger set (19), a final polymerization cold well (20), a secondary final polymerization filter set (21), a stable EG tank (22) and a fresh EG tank (23) .The system has the advantages that spray EG is recycled, and utilization efficiency is improved.
Description
Technical field
The present invention relates to a kind of continuous polymerization technique EG blood circulation.
Background technology
Polyester belongs to macromolecular compound, is to be produced polyethylene terephthalate (PET) by p-phthalic acid and ethylene glycol (EG) through polycondensation, and part PET therein is ultimately generated by underwater cutpellet again.In producing PET Process, need when prepolymerization reaction still and final polymerization tank carry out evacuation spray to use EG spray, the EG amount used due to EG spray is relatively big, therefore seeks one and spray EG is circulated use, and the continuous polymerization technique EG blood circulation improving utilization ratio is particularly important.
Summary of the invention
It is an object of the invention to overcome above-mentioned deficiency, it is provided that spray EG is circulated use by one, improve the continuous polymerization technique EG blood circulation of utilization ratio.
The object of the present invention is achieved like this:
A kind of continuous polymerization technique EG blood circulation, it is characterized in that it includes prepolymerization reaction still, pre-polymerization one-level spray equipment, two grades of spray equipments of pre-polymerization, pre-polymerization hot well, pre-polymerization preheater, pre-polymerization filter group, pre-polymerization pipe heat exchanger group, the cold well of pre-polymerization, plate type heat exchanger, hot well overflow tank, continuous polymerization EG tank, slurry mix tank, final polymerization tank, poly-one-level spray equipment eventually, poly-two grades of spray equipments eventually, whole heat build-up well, poly-preheater eventually, poly-grade one filter group eventually, poly-pipe heat exchanger group eventually, the most poly-cold well, poly-secondary filter group eventually, stablize EG tank, fresh EG tank and evacuation unit,
Wherein:
The material outlet of prepolymerization reaction still is connected with the material inlet of final polymerization tank by material pipe,
The top of prepolymerization reaction still is connected by pre-polymerization vacuum lead with the top of pre-polymerization one-level spray equipment, the bottom of two grades of spray equipments of pre-polymerization is connected pipeline with the hypomere of pre-polymerization one-level spray equipment by spray and connects, the top of two grades of spray equipments of pre-polymerization is connected evacuation unit with the top of pre-polymerization one-level spray equipment
Discharging opening bottom pre-polymerization one-level spray equipment connects the charging aperture at pre-polymerization hot well top by pipeline, discharging opening bottom pre-polymerization hot well connects the charging aperture at pre-polymerization preheater top by pre-polymerization screw rod conveyor, the discharging opening of pre-polymerization hot well epimere connects the charging aperture at pre-polymerization preheater top also by pipeline, the first discharging opening bottom pre-polymerization preheater connects the charging aperture of pre-polymerization filter group by pipeline, the discharging opening of pre-polymerization filter group connects the charging aperture of pre-polymerization pipe heat exchanger by pipeline, the discharging opening of pre-polymerization pipe heat exchanger connects the charging aperture of pre-polymerization one-level spray equipment by pipeline,
The top of final polymerization tank is connected by poly-vacuum lead eventually with the top of poly-one-level spray equipment eventually, the bottom of poly-two grades of spray equipments is connected pipeline connection with the hypomere of poly-one-level spray equipment eventually by spray eventually, the top of poly-two grades of spray equipments is connected evacuation unit with the top of poly-one-level spray equipment eventually eventually
Discharging opening bottom poly-one-level spray equipment connects the charging aperture at whole heat build-up well top by pipeline eventually, the discharging opening of whole heat build-up bottom connects the charging aperture at poly-preheater top eventually by poly-screw rod conveyor eventually, the discharging opening of whole aboveground section of heat build-up connects the charging aperture at poly-preheater top eventually also by pipeline, the first discharging opening bottom poly-preheater 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,
Discharging opening bottom two grades of spray equipments of pre-polymerization connects the charging aperture at pre-polymerization Leng Jing top by pipeline, discharging opening bottom poly-two grades of spray equipments connects the charging aperture at poly-Leng Jing top eventually by pipeline eventually, the discharging opening of the cold bottom of pre-polymerization is connected by a bye-pass respectively with the discharging opening of the most poly-cold bottom and merges into main pipe rail, this main pipe rail separates again the charging aperture of two bye-pass connecting plate type heat exchangers, wherein a bye-pass is connected to the charging aperture of continuous polymerization EG tank top also by adapter roadside, side, the discharging opening of plate type heat exchanger connects charging aperture and the charging aperture of whole poly-two grades of spray equipments of two grades of spray equipments of pre-polymerization more respectively by two bye-passes, the cold well of pre-polymerization connects with the inside epimere of the most poly-cold well,
The overfall of pre-polymerization preheater hypomere is connected the charging aperture of hot well overflow tank respectively with the overfall of poly-preheater hypomere eventually by a bye-pass,
Discharging opening bottom the second discharging opening bottom pre-polymerization preheater, the discharging opening of the second discharging opening bottom the discharging opening of pre-polymerization screw rod transmission motor spindle, eventually poly-preheater, eventually poly-screw rod transmission motor spindle and hot well overflow tank all connects a bye-pass, these five bye-passes are merged into a main pipe rail and then lead to the charging aperture of continuous polymerization EG tank top, a bye-pass is also separated on this main pipe rail, this bye-pass connects thick EG tank
Discharge gate bottom pre-polymerization filter group is connected the charging aperture at pre-polymerization hot well top respectively with the discharge gate bottom pre-polymerization pipe heat exchanger group by a bye-pass, discharge gate bottom poly-grade one filter group is connected the charging aperture at whole heat build-up well top respectively with the discharge gate bottom poly-pipe heat exchanger group eventually by a bye-pass eventually
Pre-polymerization filter group also separates two bye-passes to the pipeline between pre-polymerization pipe heat exchanger group, wherein a bye-pass connects the charging aperture of continuous polymerization EG tank top, the charging aperture of an other bye-pass stable connection EG tank top, the discharging opening stablizing EG tank connects the charging aperture at pre-polymerization hot well top by pipeline, the discharging opening of continuous polymerization EG pot bottom is connected by a bye-pass respectively with the overfall of continuous polymerization EG tank and merges into main pipe rail, this main pipe rail connects the charging aperture of slurry mix tank, connect the refluxing opening of continuous polymerization EG tank also by reflux pipe on this main pipe rail,
Eventually poly-grade one filter group also separates a bye-pass to the pipeline between poly-pipe heat exchanger group eventually, this bye-pass by the pipeline between the charging aperture of stable connection EG tank top after poly-secondary filter group eventually or stable connection EG tank to pre-polymerization hot well,
Three bye-passes are separated on the main pipe rail that the discharging opening of fresh EG tank connects, Article 1, bye-pass is connected on the bye-pass that the most poly-cold well discharging opening connects, Article 2 bye-pass is connected to the charging aperture at whole heat build-up well top, and Article 3 bye-pass is connected to the charging aperture of stable EG tank top.
Pre-polymerization filter group is parallel with two pre-polymerization filters；
Pre-polymerization pipe heat exchanger group has three pre-polymerization pipe heat exchangers, three pre-polymerization heat exchangers to control series, parallel or connection in series-parallel syntagmatic by the break-make of multiple shutoff valves；
Eventually poly-grade one filter group be parallel with two end poly-grade one filter；
Eventually poly-pipe heat exchanger group have three end poly-pipe heat exchanger, three end poly-pipe heat exchanger by the break-make control series, parallel of multiple shutoff valves or connection in series-parallel syntagmatic；
Eventually poly-secondary filter group be parallel with two end poly-secondary filter；
Plate type heat exchanger has been arranged in parallel three plate type heat exchangers.
Compared with prior art, the invention has the beneficial effects as follows:
Continuous polymerization technique EG blood circulation of the present invention has spray EG is circulated use, the advantage improving utilization ratio, and has the advantage that auto-adjustment control performance is high.
Accompanying drawing explanation
Fig. 1 is the structural representation of continuous polymerization technique EG blood circulation of the present invention.
Fig. 2 is the signal control schematic diagram of pre-polymerization pressure transmitter and pre-polymerization flow control valve.
Fig. 3 is that the signal of poly-pressure transmitter and whole poly-pressure-regulating valve eventually controls schematic diagram.
Fig. 4 is that the signal of pre-polymerization hot well fluid level transmitter, pre-polymerization preheater fluid level transmitter and the second fluid level control valve controls schematic diagram.
Fig. 5 is that the signal of continuous polymerization EG tank fluid level transmitter, second flow transmitter and second flow control valve controls schematic diagram.
Fig. 6 is that the signal of pre-polymerization cold well fluid level transmitter and the first fluid level control valve controls schematic diagram.
Fig. 7 is the signal control schematic diagram of first flow transmitter and first flow control valve.
Fig. 8 is that the signal of whole heat build-up well fluid level transmitter, eventually poly-preheater fluid level transmitter and the 3rd fluid level control valve controls schematic diagram.
Fig. 9 is the signal control schematic diagram of stable EG tank liquid level controller and the 4th fluid level control valve.
Detailed description of the invention
See Fig. 1 ~ Fig. 9, a kind of continuous polymerization technique EG blood circulation that the present invention relates to, it includes prepolymerization reaction still 1, pre-polymerization one-level spray equipment 2, two grades of spray equipments 3 of pre-polymerization, pre-polymerization hot well 4, pre-polymerization preheater 5, pre-polymerization filter group 6, pre-polymerization pipe heat exchanger group 7, the cold well of pre-polymerization 8, plate type heat exchanger 9, hot well overflow tank 10, continuous polymerization EG tank 11, slurry mix tank 12, final polymerization tank 13, poly-one-level spray equipment 14 eventually, poly-two grades of spray equipments 15 eventually, whole heat build-up well 16, poly-preheater 17 eventually, poly-grade one filter group 18 eventually, poly-pipe heat exchanger group 19 eventually, the most poly-cold well 20, poly-secondary filter group 21 eventually, stablize EG tank 22, fresh EG tank 23 and evacuation unit 24.
Pre-polymerization one-level spray equipment 2 includes that upper and lower two-layer sprays；
Two grades of spray equipments 3 of pre-polymerization include that upper and lower two-layer sprays；
Poly-one-level spray equipment 14 includes that upper and lower two-layer sprays eventually；
Poly-two grades of spray equipments 15 include that upper and lower two-layer sprays eventually；
Pre-polymerization filter group 6 is parallel with two pre-polymerization filters；
Pre-polymerization pipe heat exchanger group 7 has three pre-polymerization pipe heat exchangers, three pre-polymerization heat exchangers to control series, parallel or connection in series-parallel syntagmatic by the break-make of multiple shutoff valves；
Eventually poly-grade one filter group 18 be parallel with two end poly-grade one filter；
Eventually poly-pipe heat exchanger group 19 have three end poly-pipe heat exchanger, three end poly-pipe heat exchanger by the break-make control series, parallel of multiple shutoff valves or connection in series-parallel syntagmatic；
Eventually poly-secondary filter group 21 be parallel with two end poly-secondary filter；
Plate type heat exchanger 9 has been arranged in parallel three plate type heat exchangers.
Wherein:
The material outlet of prepolymerization reaction still 1 is connected with the material inlet of final polymerization tank 13 by material pipe.
The top of prepolymerization reaction still 1 is connected by pre-polymerization vacuum lead with the top of pre-polymerization one-level spray equipment 2, the bottom of two grades of spray equipments 3 of pre-polymerization is connected pipeline with the hypomere of pre-polymerization one-level spray equipment 2 by spray and connects, and the top of two grades of spray equipments 3 of pre-polymerization is connected evacuation unit 24 with the top of pre-polymerization one-level spray equipment 2.Being provided with pre-polymerization pressure transmitter on pre-polymerization vacuum lead, the pipeline at two grades of spray equipment 3 tops of pre-polymerization is provided with pre-polymerization flow control valve, the signal of pre-polymerization pressure transmitter passes to pre-polymerization pressure controller, thus controls the aperture of pre-polymerization flow control valve.
Discharging opening bottom pre-polymerization one-level spray equipment 2 connects the charging aperture at pre-polymerization hot well 4 top by pipeline, discharging opening bottom pre-polymerization hot well 4 connects the charging aperture at pre-polymerization preheater 5 top by pre-polymerization screw rod conveyor, the discharging opening of pre-polymerization hot well 4 epimere connects the charging aperture at pre-polymerization preheater 5 top also by pipeline, the first discharging opening bottom pre-polymerization preheater 5 connects the charging aperture of pre-polymerization filter group 6 by pipeline, two delivery pumps it have been arranged in parallel on this pipeline, the discharging opening of pre-polymerization filter group 6 connects the charging aperture of pre-polymerization pipe heat exchanger 7 by pipeline, the discharging opening of pre-polymerization pipe heat exchanger 7 connects the charging aperture of pre-polymerization one-level spray equipment 2 by pipeline.
The top of final polymerization tank 13 is connected by poly-vacuum lead eventually with the top of poly-one-level spray equipment 14 eventually, the bottom of poly-two grades of spray equipments 15 is connected pipeline connection with the hypomere of poly-one-level spray equipment 14 eventually by spray eventually, and the top of poly-two grades of spray equipments 15 is connected evacuation unit 24 with the top of poly-one-level spray equipment 14 eventually eventually.Being provided with poly-pressure transmitter eventually eventually on poly-vacuum lead, be provided with poly-pressure-regulating valve eventually eventually on the pipeline at poly-two grades of spray equipment 15 tops, the signal of poly-pressure transmitter passes to poly-pressure controller eventually eventually, thus controls the aperture of poly-pressure-regulating valve eventually.
Discharging opening bottom poly-one-level spray equipment 14 connects the charging aperture at whole heat build-up well 16 top by pipeline eventually, discharging opening bottom whole heat build-up well 16 connects the charging aperture at poly-preheater 17 top eventually by poly-screw rod conveyor eventually, the discharging opening of whole heat build-up well 16 epimere connects the charging aperture at poly-preheater 17 top eventually also by pipeline, the first discharging opening bottom poly-preheater 17 connects the charging aperture of poly-filter group 18 eventually by pipeline eventually, two delivery pumps it have been arranged in parallel on this 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.
nullDischarging opening bottom two grades of spray equipments 3 of pre-polymerization connects the charging aperture at pre-polymerization cold well 8 top by pipeline，Discharging opening bottom poly-two grades of spray equipments 15 connects the charging aperture at the most poly-cold well 20 top by pipeline eventually，Discharging opening bottom the cold well of pre-polymerization 8 is connected by a bye-pass respectively with the whole discharging opening gathered bottom cold well 20 and merges into main pipe rail，Three delivery pumps of parallel connection it are provided with on this main pipe rail，This main pipe rail at three delivery pump rears separates again the charging aperture of two bye-pass connecting plate type heat exchangers 9，Wherein a bye-pass is connected to the charging aperture at continuous polymerization EG tank 11 top also by adapter roadside, side，It is provided with the first fluid level control valve on other adapter road，The discharging opening of plate type heat exchanger 9 connects charging aperture and the charging aperture of whole poly-two grades of spray equipments 15 of two grades of spray equipments 3 of pre-polymerization more respectively by two bye-passes.The cold well of pre-polymerization 8 connects with the inside epimere of the most poly-cold well 20.
The overfall of pre-polymerization preheater 5 hypomere is connected the charging aperture of hot well overflow tank 10 respectively with the overfall of poly-preheater 17 hypomere eventually by a bye-pass.
Discharging opening bottom the second discharging opening bottom pre-polymerization preheater 5, the discharging opening of the second discharging opening bottom the discharging opening of pre-polymerization screw rod transmission motor spindle, eventually poly-preheater 17, eventually poly-screw rod transmission motor spindle and hot well overflow tank 10 all connects a bye-pass, these five bye-passes are merged into a main pipe rail and then lead to the charging aperture at continuous polymerization EG tank 11 top, a delivery pump it is provided with on this main pipe rail, also separating a bye-pass on this main pipe rail at delivery pump rear, this bye-pass connects thick EG tank.
Discharge gate bottom pre-polymerization filter group 6 is connected the charging aperture at pre-polymerization hot well 4 top respectively with the discharge gate bottom pre-polymerization pipe heat exchanger group 7 by a bye-pass.Discharge gate bottom poly-grade one filter group 18 is connected the charging aperture at whole heat build-up well 16 top respectively with the discharge gate bottom poly-pipe heat exchanger group 19 eventually by a bye-pass eventually.
Two bye-passes are also separated on pipeline between pre-polymerization filter group 6 to pre-polymerization pipe heat exchanger group 7, wherein a bye-pass connects the charging aperture at continuous polymerization EG tank 11 top, the second fluid level control valve it is provided with on this bye-pass, the charging aperture at other bye-pass stable connection EG tank 22 top, the discharging opening stablizing EG tank 22 connects the charging aperture at pre-polymerization hot well 4 top by pipeline, discharging opening bottom continuous polymerization EG tank 11 is connected by a bye-pass respectively with the overfall of continuous polymerization EG tank 11 and merges into main pipe rail, two delivery pumps of parallel connection it are provided with on this main pipe rail, this main pipe rail at delivery pump rear connects the charging aperture of slurry mix tank 12, connect the refluxing opening of continuous polymerization EG tank 11 also by reflux pipe on this main pipe rail at delivery pump rear.
Eventually poly-grade one filter group 18 also separates a bye-pass to the pipeline between poly-pipe heat exchanger group 19 eventually, being provided with the 3rd fluid level control valve on this bye-pass, this bye-pass is by pipeline between charging aperture or stable connection EG tank 22 to the pre-polymerization hot well 4 at stable connection EG tank 22 top after eventually poly-secondary filter group 21.
Three bye-passes are separated on the main pipe rail that the discharging opening of fresh EG tank 23 connects, Article 1, bye-pass is connected on the bye-pass that the most poly-cold well 20 discharging opening connects, Article 1, the end of bye-pass is provided with the first flow transmitter and first flow control valve front and back arranged, Article 2 bye-pass is connected to the charging aperture at whole heat build-up well 16 top, the end of Article 2 bye-pass is provided with the second flow transmitter and second flow control valve front and back arranged, Article 3 bye-pass is connected to the charging aperture at stable EG tank 22 top, the 4th fluid level control valve it is provided with on Article 3 bye-pass.
It addition, be provided with pre-polymerization hot well fluid level transmitter on pre-polymerization hot well 4,
Pre-polymerization preheater fluid level transmitter it is provided with on pre-polymerization preheater 5,
Pre-polymerization cold well fluid level transmitter it is provided with on the cold well of pre-polymerization 8,
Continuous polymerization EG tank fluid level transmitter it is provided with on continuous polymerization EG tank 11,
Whole heat build-up well fluid level transmitter it is provided with on whole heat build-up well 16,
Poly-preheater fluid level transmitter eventually it is provided with eventually on poly-preheater 17,
Stablize and on EG tank 22, be provided with stable EG tank fluid level transmitter.
Wherein, pre-polymerization hot well fluid level transmitter passes to HS(manually-operated gate with the signal of pre-polymerization preheater fluid level transmitter), then pass to LIC(liquid level controller), thus control the aperture of the second fluid level control valve；
The signal of continuous polymerization EG tank fluid level transmitter passes to HS, then passes to LIC, then passes to FIC, passes to FIC(flow controller with second flow transmitter) signal converge, thus control the aperture of second flow control valve；
The signal of pre-polymerization cold well fluid level transmitter passes to LIC, thus controls the aperture of the first fluid level control valve；
The signal of first flow transmitter passes to LIC, thus controls the aperture of first flow control valve；
Whole heat build-up well fluid level transmitter passes to HS with the signal of poly-preheater fluid level transmitter eventually, then passes to LIC, thus controls the aperture of the 3rd fluid level control valve；
The signal stablizing EG tank fluid level transmitter passes to LIC, thus controls the aperture of the 4th fluid level control valve.
Claims (7)
- null1. a continuous polymerization technique EG blood circulation，It is characterized in that it includes prepolymerization reaction still (1)、Pre-polymerization one-level spray equipment (2)、Two grades of spray equipments (3) of pre-polymerization、Pre-polymerization hot well (4)、Pre-polymerization preheater (5)、Pre-polymerization filter group (6)、Pre-polymerization pipe heat exchanger group (7)、The cold well of pre-polymerization (8)、Plate type heat exchanger (9)、Hot well overflow tank (10)、Continuous polymerization EG tank (11)、Slurry mix tank (12)、Final polymerization tank (13)、Poly-one-level spray equipment (14) eventually、Poly-two grades of spray equipments (15) eventually、Whole heat build-up well (16)、Poly-preheater (17) eventually、Poly-grade one filter group (18) eventually、Poly-pipe heat exchanger group (19) eventually、The most poly-cold well (20)、Poly-secondary filter group (21) eventually、Stablize EG tank (22)、Fresh EG tank (23) and evacuation unit (24)，Wherein:The material outlet of prepolymerization reaction still (1) is connected with the material inlet of final polymerization tank (13) by material pipe,The top of prepolymerization reaction still (1) is connected by pre-polymerization vacuum lead with the top of pre-polymerization one-level spray equipment (2), the bottom of two grades of spray equipments (3) of pre-polymerization is connected pipeline with the hypomere of pre-polymerization one-level spray equipment (2) by spray and connects, the top of two grades of spray equipments (3) of pre-polymerization is connected evacuation unit (24) with the top of pre-polymerization one-level spray equipment (2)The discharging opening of pre-polymerization one-level spray equipment (2) bottom connects the charging aperture at pre-polymerization hot well (4) top by pipeline, the discharging opening of pre-polymerization hot well (4) bottom connects the charging aperture at pre-polymerization preheater (5) top by pre-polymerization screw rod conveyor, the discharging opening of pre-polymerization hot well (4) epimere connects the charging aperture at pre-polymerization preheater (5) top also by pipeline, first discharging opening of pre-polymerization preheater (5) bottom connects the charging aperture of pre-polymerization filter group (6) by pipeline, the discharging opening of pre-polymerization filter group (6) connects the charging aperture of pre-polymerization pipe heat exchanger (7) by pipeline, the discharging opening of pre-polymerization pipe heat exchanger (7) connects the charging aperture of pre-polymerization one-level spray equipment (2) by pipeline,The top of final polymerization tank (13) is connected by poly-vacuum lead eventually with the top of poly-one-level spray equipment (14) eventually, the bottom of poly-two grades of spray equipments (15) is connected pipeline connection with the hypomere of poly-one-level spray equipment (14) eventually by spray eventually, the top of poly-two grades of spray equipments (15) is connected evacuation unit (24) with the top of poly-one-level spray equipment (14) eventually eventuallyThe discharging opening of poly-one-level spray equipment (14) bottom connects the charging aperture at whole heat build-up well (16) top by pipeline eventually, the discharging opening of whole heat build-up well (16) bottom connects the charging aperture at poly-preheater (17) top eventually by poly-screw rod conveyor eventually, the discharging opening of whole heat build-up well (16) epimere connects the charging aperture at poly-preheater (17) top eventually also by pipeline, first discharging opening of poly-preheater (17) bottom connects the charging aperture of poly-filter group (18) eventually by pipeline eventually, 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,nullThe discharging opening of two grades of spray equipment (3) bottoms of pre-polymerization connects the charging aperture at pre-polymerization cold well (8) top by pipeline，The discharging opening of the most poly-two grades of spray equipments (15) bottom connects the charging aperture at the most poly-cold well (20) top by pipeline，The discharging opening of the cold well of pre-polymerization (8) bottom is connected by a bye-pass respectively with the discharging opening of the most poly-cold well (20) bottom and merges into main pipe rail，This main pipe rail separates again the charging aperture of two bye-passes connecting plate type heat exchanger (9)，Wherein a bye-pass is connected to the charging aperture at continuous polymerization EG tank (11) top also by adapter roadside, side，The discharging opening of plate type heat exchanger (9) connects charging aperture and the charging aperture of whole poly-two grades of spray equipments (15) of two grades of spray equipments (3) of pre-polymerization more respectively by two bye-passes，The cold well of pre-polymerization (8) connects with the inside epimere of the most poly-cold well (20)，The overfall of pre-polymerization preheater (5) hypomere is connected the charging aperture of hot well overflow tank (10) respectively with the overfall of poly-preheater (17) hypomere eventually by a bye-pass,The discharging opening of the second discharging opening of pre-polymerization preheater (5) bottom, the discharging opening of the discharging opening of pre-polymerization screw rod transmission motor spindle, eventually the second discharging opening of poly-preheater (17) bottom, eventually poly-screw rod transmission motor spindle and hot well overflow tank (10) bottom all connects a bye-pass, these five bye-passes are merged into a main pipe rail and then lead to the charging aperture at continuous polymerization EG tank (11) top, a bye-pass is also separated on this main pipe rail, this bye-pass connects thick EG tankThe discharge gate of pre-polymerization filter group (6) bottom is connected the charging aperture at pre-polymerization hot well (4) top respectively with the discharge gate of pre-polymerization pipe heat exchanger group (7) bottom by a bye-pass, the discharge gate of poly-grade one filter group (18) bottom is connected the charging aperture at whole heat build-up well (16) top respectively with the discharge gate of poly-pipe heat exchanger group (19) bottom eventually by a bye-pass eventuallyPre-polymerization filter group (6) also separates two bye-passes to the pipeline between pre-polymerization pipe heat exchanger group (7), wherein a bye-pass connects the charging aperture at continuous polymerization EG tank (11) top, the charging aperture at other bye-pass stable connection EG tank (22) top, the discharging opening stablizing EG tank (22) connects the charging aperture at pre-polymerization hot well (4) top by pipeline, the discharging opening of continuous polymerization EG tank (11) bottom is connected by a bye-pass respectively with the overfall of continuous polymerization EG tank (11) and merges into main pipe rail, this main pipe rail connects the charging aperture of slurry mix tank (12), connect the refluxing opening of continuous polymerization EG tank (11) also by reflux pipe on this main pipe rail,Eventually poly-grade one filter group (18) also separates a bye-pass to the pipeline between poly-pipe heat exchanger group (19) eventually, this bye-pass is by the pipeline between the charging aperture at eventually poly-secondary filter group (21) stable connection EG tank (22) top afterwards or stable connection EG tank (22) to pre-polymerization hot well (4)Three bye-passes are separated on the main pipe rail that the discharging opening of fresh EG tank (23) connects, Article 1, bye-pass is connected on the bye-pass that the most poly-cold well (20) discharging opening connects, Article 2 bye-pass is connected to the charging aperture at whole heat build-up well (16) top, and Article 3 bye-pass is connected to the charging aperture at stable EG tank (22) top.
- A kind of continuous polymerization technique EG blood circulation the most according to claim 1, it is characterised in that pre-polymerization filter group (6) is parallel with two pre-polymerization filters.
- A kind of continuous polymerization technique EG blood circulation the most according to claim 1, it is characterized in that pre-polymerization pipe heat exchanger group (7) has three pre-polymerization pipe heat exchangers, three pre-polymerization heat exchangers to control series, parallel or connection in series-parallel syntagmatic by the break-make of multiple shutoff valves.
- A kind of continuous polymerization technique EG blood circulation the most according to claim 1, it is characterised in that eventually poly-grade one filter group (18) be parallel with two end poly-grade one filter.
- A kind of continuous polymerization technique EG blood circulation the most according to claim 1, it is characterized in that eventually poly-pipe heat exchanger group (19) have three end poly-pipe heat exchanger, three end poly-pipe heat exchanger by the break-make control series, parallel of multiple shutoff valves or connection in series-parallel syntagmatic.
- A kind of continuous polymerization technique EG blood circulation the most according to claim 1, it is characterised in that eventually poly-secondary filter group (21) be parallel with two end poly-secondary filter.
- A kind of continuous polymerization technique EG blood circulation the most according to claim 1, it is characterised in that plate type heat exchanger (9) has been arranged in parallel three plate type heat exchangers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610330879.5A CN105820323A (en) | 2016-05-18 | 2016-05-18 | Continuous polymerization process EG circulation system |
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