CN204973919U - Pre -polymerization reation kettle's one -level sprays EG circulation feeding device - Google Patents
Pre -polymerization reation kettle's one -level sprays EG circulation feeding device Download PDFInfo
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- CN204973919U CN204973919U CN201520571819.3U CN201520571819U CN204973919U CN 204973919 U CN204973919 U CN 204973919U CN 201520571819 U CN201520571819 U CN 201520571819U CN 204973919 U CN204973919 U CN 204973919U
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Abstract
The utility model relates to a pre -polymerization reation kettle's one -level sprays EG circulation feeding device, it includes pre -polymerization reation kettle (1), pre -polymerization one -level spray set (2), pre -polymerization second grade spray set (3), pre -polymerization hot -well (4), pre -polymerization pre -heater (5), pre -polymerization filter (6), pre -polymerization tubular heat exchanger group (7), hot well kick jar (10), continuous polymerization EG jar (11), thick liquids blending tank (12) and vacuum pumping unit (24) its characterized in that. The utility model has the advantages of to spray EG recycles improve utilization efficiency.
Description
Technical field
The utility model relates to a kind of one-level spray EG circulation supply equipment of prepolymerization reaction still.
Background technology
Polyester belongs to macromolecular compound, is to produce PETG (PET) by terephthalic acid (TPA) and ethylene glycol (EG) through polycondensation, and part PET wherein is finally generated by underwater cutpellet again.In production PET Process, carry out needing when vacuumizing spray to adopt EG spray at prepolymerization reaction still and final polymerization tank, the EG amount adopted due to EG spray is larger, therefore seek one to be recycled by spray EG, the one-level spray EG circulation supply equipment improving the prepolymerization reaction still of utilization ratio is particularly important.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned deficiency, provides a kind of and is recycled by spray EG, improves the one-level spray EG circulation supply equipment of the prepolymerization reaction still of utilization ratio.
The purpose of this utility model is achieved in that
A kind of one-level spray EG circulation supply equipment of prepolymerization reaction still, it is characterized in that it comprises prepolymerization reaction still, pre-polymerization one-level spray equipment, pre-polymerization secondary spray equipment, pre-polymerization hot well, pre-polymerization preheater, pre-polymerization filter set, pre-polymerization pipe heat exchanger group, hot well overflow tank, continuous polymerization EG tank, slurry mix tank and vacuumizes unit
Wherein:
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 pre-polymerization secondary spray equipment is connected by spraying connecting pipe with the hypomere of pre-polymerization one-level spray equipment, the top of pre-polymerization secondary spray equipment is connected with the top of pre-polymerization one-level spray equipment and vacuumizes unit
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 also connects the charging aperture at pre-polymerization preheater top by pipeline, the first discharging opening bottom pre-polymerization preheater connects the charging aperture of pre-polymerization filter set by pipeline, the discharging opening of pre-polymerization filter set 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 overfall of pre-polymerization preheater hypomere connects the charging aperture of hot well overflow tank by a pipeline,
Discharging opening bottom the discharging opening of the second discharging opening bottom pre-polymerization preheater, pre-polymerization screw rod transmission motor spindle and hot well overflow tank all connects a bye-pass, these three bye-passes are merged into the charging aperture that then a main pipe rail leads to continuous polymerization EG tank top, this main pipe rail also separates a bye-pass, this bye-pass connects thick EG tank
Discharge gate bottom pre-polymerization filter set and the discharge gate bottom pre-polymerization pipe heat exchanger group are connected the charging aperture at pre-polymerization hot well top respectively by a bye-pass,
Pipeline between pre-polymerization filter set to pre-polymerization pipe heat exchanger group also separates two bye-passes, 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 and the overfall of continuous polymerization EG tank connect respectively by a bye-pass and merge into main pipe rail, this main pipe rail connects the charging aperture of slurry mix tank, this main pipe rail is also connected the refluxing opening of continuous polymerization EG tank by return line
Pre-polymerization filter set is parallel with two pre-polymerization filters;
Pre-polymerization pipe heat exchanger group has three pre-polymerization pipe heat exchangers, and three pre-polymerization heat exchangers control series, parallel or connection in series-parallel syntagmatic by the break-make of multiple shutoff valve;
Compared with prior art, the beneficial effects of the utility model are:
The one-level spray EG circulation supply equipment of the utility model prepolymerization reaction still has and is recycled by spray EG, the advantage of raising utilization ratio, and has the high advantage of auto-adjustment control performance.
Accompanying drawing explanation
Fig. 1 is the structural representation of the one-level spray EG circulation supply equipment of the utility model prepolymerization reaction still.
Detailed description of the invention
See Fig. 1, the one-level spray EG circulation supply equipment of a kind of prepolymerization reaction still that the utility model relates to, it comprises prepolymerization reaction still 1, pre-polymerization one-level spray equipment 2, pre-polymerization secondary spray equipment 3, pre-polymerization hot well 4, pre-polymerization preheater 5, pre-polymerization filter set 6, pre-polymerization pipe heat exchanger group 7, hot well overflow tank 10, continuous polymerization EG tank 11, slurry mix tank 12 and vacuumizes unit 24.
Pre-polymerization one-level spray equipment 2 comprises upper and lower two-layer spray;
Pre-polymerization secondary spray equipment 3 comprises upper and lower two-layer spray;
Pre-polymerization filter set 6 is parallel with two pre-polymerization filters;
Pre-polymerization pipe heat exchanger group 7 has three pre-polymerization pipe heat exchangers, and three pre-polymerization heat exchangers control series, parallel or connection in series-parallel syntagmatic by the break-make of multiple shutoff valve;
Wherein:
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 pre-polymerization secondary spray equipment 3 is connected by spraying connecting pipe with the hypomere of pre-polymerization one-level spray equipment 2, and the top of pre-polymerization secondary spray equipment 3 is connected with the top of pre-polymerization one-level spray equipment 2 and vacuumizes unit 24.
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 also connects the charging aperture at pre-polymerization preheater 5 top by pipeline, the first discharging opening bottom pre-polymerization preheater 5 connects the charging aperture of pre-polymerization filter set 6 by pipeline, this pipeline is arranged in parallel two delivery pumps, the discharging opening of pre-polymerization filter set 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 overfall of pre-polymerization preheater 5 hypomere connects the charging aperture of hot well overflow tank 10 by a pipeline.
Discharging opening bottom the discharging opening of the second discharging opening bottom pre-polymerization preheater 5, pre-polymerization screw rod transmission motor spindle and hot well overflow tank 10 all connects a bye-pass, these three bye-passes are merged into the charging aperture that then a main pipe rail leads to continuous polymerization EG tank 11 top, this main pipe rail is provided with a delivery pump, this main pipe rail at delivery pump rear also separates a bye-pass, this bye-pass connects thick EG tank.
Discharge gate bottom pre-polymerization filter set 6 and the discharge gate bottom pre-polymerization pipe heat exchanger group 7 are connected the charging aperture at pre-polymerization hot well 4 top respectively by a bye-pass.
Pipeline between pre-polymerization filter set 6 to pre-polymerization pipe heat exchanger group 7 also separates two bye-passes, 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 overfall of the discharging opening bottom continuous polymerization EG tank 11 and continuous polymerization EG tank 11 connects respectively by a bye-pass and merges into main pipe rail, this main pipe rail is provided with two delivery pumps in parallel, this main pipe rail at delivery pump rear connects the charging aperture of slurry mix tank 12, this main pipe rail at delivery pump rear is also connected the refluxing opening of continuous polymerization EG tank 11 by return line.
Claims (3)
1. the one-level spray EG circulation supply equipment of a prepolymerization reaction still, it is characterized in that it comprises prepolymerization reaction still (1), pre-polymerization one-level spray equipment (2), pre-polymerization secondary spray equipment (3), pre-polymerization hot well (4), pre-polymerization preheater (5), pre-polymerization filter set (6), pre-polymerization pipe heat exchanger group (7), hot well overflow tank (10), continuous polymerization EG tank (11), slurry mix tank (12) and vacuumizes unit (24)
Wherein:
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 pre-polymerization secondary spray equipment (3) is connected by spraying connecting pipe with the hypomere of pre-polymerization one-level spray equipment (2), the top of pre-polymerization secondary spray equipment (3) is connected with the top of pre-polymerization one-level spray equipment (2) and vacuumizes unit (24)
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 also connects the charging aperture at pre-polymerization preheater (5) top by pipeline, first discharging opening of pre-polymerization preheater (5) bottom connects the charging aperture of pre-polymerization filter set (6) by pipeline, the discharging opening of pre-polymerization filter set (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 overfall of pre-polymerization preheater (5) hypomere connects the charging aperture of hot well overflow tank (10) by a pipeline,
Discharging opening bottom second discharging opening of pre-polymerization preheater (5) bottom, the discharging opening of pre-polymerization screw rod transmission motor spindle and hot well overflow tank (10) all connects a bye-pass, these three bye-passes are merged into the charging aperture that then a main pipe rail leads to continuous polymerization EG tank (11) top, this main pipe rail also separates a bye-pass, this bye-pass connects thick EG tank
The discharge gate of pre-polymerization filter set (6) bottom and the discharge gate of pre-polymerization pipe heat exchanger group (7) bottom are connected the charging aperture at pre-polymerization hot well (4) top respectively by a bye-pass,
Pipeline between pre-polymerization filter set (6) to pre-polymerization pipe heat exchanger group (7) also separates two bye-passes, 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 and the overfall of continuous polymerization EG tank (11) connect respectively by a bye-pass and merge into main pipe rail, this main pipe rail connects the charging aperture of slurry mix tank (12), this main pipe rail is also connected the refluxing opening of continuous polymerization EG tank (11) by return line.
2. the one-level spray EG circulation supply equipment of a kind of prepolymerization reaction still according to claim 1, is characterized in that pre-polymerization filter set (6) is parallel with two pre-polymerization filters.
3. the one-level spray EG circulation supply equipment of a kind of prepolymerization reaction still 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 control series, parallel or connection in series-parallel syntagmatic by the break-make of multiple shutoff valve.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520571819.3U CN204973919U (en) | 2015-08-03 | 2015-08-03 | Pre -polymerization reation kettle's one -level sprays EG circulation feeding device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520571819.3U CN204973919U (en) | 2015-08-03 | 2015-08-03 | Pre -polymerization reation kettle's one -level sprays EG circulation feeding device |
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| CN204973919U true CN204973919U (en) | 2016-01-20 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105820323A (en) * | 2016-05-18 | 2016-08-03 | 江苏兴业塑化股份有限公司 | Continuous polymerization process EG circulation system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105820323A (en) * | 2016-05-18 | 2016-08-03 | 江苏兴业塑化股份有限公司 | Continuous polymerization process EG circulation system |
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