CN100532425C - Single kettle whole flow continuous polyester equipment free from stirring - Google Patents
Single kettle whole flow continuous polyester equipment free from stirring Download PDFInfo
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- CN100532425C CN100532425C CNB2006100880948A CN200610088094A CN100532425C CN 100532425 C CN100532425 C CN 100532425C CN B2006100880948 A CNB2006100880948 A CN B2006100880948A CN 200610088094 A CN200610088094 A CN 200610088094A CN 100532425 C CN100532425 C CN 100532425C
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Abstract
This invention discloses a stirrer-free single still full-flow continuous polyester production apparatus, which comprises an esterification reaction kettle, a pre-polycondensation reaction kettle, and a final polycondensation reaction kettle. The esterification reaction kettle comprises a heater inside. The pre-polycondensation reaction kettle and the final polycondensation reaction kettle are coaxially set above the esterification reaction kettle. Baffles are vertically set surrounding the heater. A hollow tray and a barrier plate are horizontally set in the pre-polycondensation reaction kettle. Both the hollow tray and the barrier plate comprise multiple holes. Multiple retention trays are horizontally set in the final polycondensation reaction kettle, and comprise multiple holes. The outlet at the lower part of the final polycondensation reaction kettle is connected with the output pump. The tops of the pre-polycondensation reaction kettle and the final polycondensation reaction kettle comprise vacuum suction ports. The apparatus has such advantages as no need for stirrer, no need for outside driving force, low energy consumption, compact structure, small floor area and low cost.
Description
Technical field
The present invention relates to a kind of chemical industry equipment, particularly a kind of polyester production device.
Background technology
At present, the polyester industrial development is swift and violent, people are also more and more ripe to the grasp of polyester technology, polyester production process need be through over-churning, precondensation, final minification gathers three processes, pet reaction device of the prior art, generally comprise three separate reaction kettle of the esterification, the prepolymerization reaction still, final minification gathers reactor, each reactor is equipped with chuck outward and is used for insulation or heating, be connected with pump by the road between each reactor, after last still reaction is finished, with pump product pump is reacted to next reactor,, in the respective reaction still, be provided with whipping appts for strengthening mixing.Its weak point is: each reactor is isolated mutually, causes material thermosteresis in the transportation by lighter process big, needs the cost electric energy to lighter in each reactor, also needs in the reaction process to stir, and energy consumption is big; The reaction unit complex structure, floor space is big.
Summary of the invention
The purpose of this invention is to provide a kind of single kettle continuous polyester equipment with full flow and without stirring, make it not need the exterior power input to lighter and stir, can finish reaction.
The object of the present invention is achieved like this: a kind of single kettle continuous polyester equipment with full flow and without stirring, comprise that reaction kettle of the esterification, prepolymerization reaction still and final minification gather reactor, be provided with well heater in the reaction kettle of the esterification, the periphery of well heater uprightly is provided with the isolation baffle plate, isolate the baffle plate bottom and be provided with the circulation passage of connecting outside isolating in the baffle plate, the import of reaction kettle of the esterification is arranged on the well heater bottom and is positioned at isolates the baffle plate inboard, and the outlet of reaction kettle of the esterification is arranged on isolates the baffle plate outside; The coaxial reaction kettle of the esterification top that is arranged on of the poly-reactor of prepolymerization reaction still and final minification, the poly-reactor of final minification is positioned at prepolymerization reaction still periphery, the import of prepolymerization reaction still is arranged on the reaction kettle of the esterification top, be connected with pipeline through valve between the import of prepolymerization reaction still and the outlet of reaction kettle of the esterification, level is provided with empty pallet in the several layers in the prepolymerization reaction still, top, the middle part of empty pallet is provided with barrier disc in each, be equipped with some holes on middle empty pallet and the barrier disc, the outlet of prepolymerization reaction still is arranged on the top of prepolymerization reaction still, the outlet of described prepolymerization reaction still is connected with seal for pipe joints through liquid level valve with the import of the poly-reactor of final minification that is positioned at the poly-reactor top of final minification, be horizontally disposed with several layers in the poly-reactor of final minification and be detained pallet, each is detained pallet and is provided with some holes, the outlet that is positioned at the poly-reactor of final minification of the poly-reactor bottom of final minification is connected with Send out pump, and the poly-reactor top of prepolymerization reaction still and final minification is respectively equipped with vacuum pumping opening.
When the present invention works, vacuumize for prepolymerization reaction still and the poly-reactor of final minification by vacuum pumping opening, prepared slurry upwards enters in the reaction kettle of the esterification through the import of reaction kettle of the esterification, slurry is contact heater at first, slurry after the heater via heating continues to rise, enter the isolation baffle plate outside from isolating baffle plate top, move downward then, pass the circulation passage of isolating on the baffle plate and enter the isolation baffle interior, and then rising is a heater heats once more also, form natural circulation, in continuous natural circulation, slurry generation esterification, product after the esterification can enter in the prepolymerization reaction still under suction function through valve and pipeline, slowly rise step by step in the hole that slurry after esterification part in the prepolymerization reaction still is passed on middle empty pallet and the barrier disc, the intermediary passage of empty pallet and barrier disc slowly rose step by step during part was walked around in addition, in the slurry uphill process, slurry is plug flow, can more successfully finish prepolymerization reaction, then, prepolycondensate enters in the poly-reactor of final minification through valve and pipeline from the outlet of prepolymerization reaction still, and pass and be detained pallet and descend step by step, finish the poly-reaction of final minification, finally gather the outlet of reactor through the Send out pump separating device from final minification; From above-mentioned working process as can be seen, compared with prior art, the present invention need not whipping appts and exterior power input, can finish production of polyester, save the energy, can reduce mechanical fault and reduce running cost, because tube side is short between each reactor, compact construction can reduce floor space, and technical process is shorter, equipment and pipeline reduce, can reduce the use of mechanical pump, cost descends, and can also shorten the reaction times.The present invention is exclusively used in production of polyester.
Along with the carrying out of the poly-reaction of final minification, the viscosity of slurry is increasing, is detained the time basically identical that stops on the pallet for making slurry at each, can make the aperture in hole on the superposed delay pallet be detained the aperture in hole on the pallet less than being positioned at the bottom.By the amplification step by step in hole, offset the variation of slurry viscosity, avoided slurry bulk deposition in device.
Influence circulation for prevent that slurry in the reaction kettle of the esterification from seething with excitement in esterification reaction process, be positioned at the well heater top in the described reaction kettle of the esterification and be provided with barrier plate.Barrier plate can stop that boiling liquid splashes, and evenly circulates thereby more help material.
For to the slurry heating, it is remained under the suitable temperature react, the outside of the poly-reactor of described reaction kettle of the esterification and final minification is provided with the chuck that is connected as a single entity.In chuck, feed heat-transfer medium, can be to slurry heating and insulation.
For making enough power self-fulfillment entire reaction course can be arranged in the reaction process, the pipeline of the import of connection prepolymerization reaction still and the outlet of reaction kettle of the esterification is provided with EG (ethylene glycol) inlet and additive inlet.Can replenish ethylene glycol by the EG inlet in case of necessity, ethylene glycol is separated out after being heated, and forms big blister, and it is up to promote slurry, makes slurry independently finish transfer movement.
For further regulating the temperature that enters slurry in the prepolymerization reaction still, the pipeline of the import of connection prepolymerization reaction still and the outlet of reaction kettle of the esterification is provided with outward and adds hot device.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is A-A sectional drawing of Fig. 1;
Wherein, 1 chuck, the outlet of 2 prepolymerization reaction stills, the import of the poly-reactor of 3 final minifications, 4 barrier discs, empty pallet in 5,6 are detained pallets, 7 prepolymerization reaction stills, 8 final minifications gather reactor, 9 Send out pumps, 10 barrier plates, 11 reaction kettle of the esterification, 12 well heaters, 13 isolate baffle plate, 14 circulation passages, the import of 15 reaction kettle of the esterification, the outlet of 16 reaction kettle of the esterification, 17 additives inlet, 18 outer well heaters, 19 EG inlet, 20 prepolymerization reaction still imports, 21 vacuum pumping opening.
Embodiment
As figure, be single kettle continuous polyester equipment with full flow and without stirring, comprise that reaction kettle of the esterification 11, prepolymerization reaction still 7 and final minification gather reactor 8, be provided with well heater 12 in the reaction kettle of the esterification 11, the periphery of well heater 12 uprightly is provided with isolates baffle plate 13, isolate baffle plate 13 bottoms and be provided with the circulation passage of connecting outside isolating in the baffle plate 14, the import 15 of reaction kettle of the esterification is arranged on well heater 12 bottoms and is positioned at isolates baffle plate 13 inboards, be positioned at the well heater top in the described reaction kettle of the esterification 11 and be provided with barrier plate 10, the outlet of reaction kettle of the esterification 11 is arranged on isolates the baffle plate outside; Prepolymerization reaction still 7 and final minification gather the reactor 8 coaxial tops that are arranged on reaction kettle of the esterification 11, the poly-reactor 8 of final minification is positioned at prepolymerization reaction still 7 peripheries, the import 20 of prepolymerization reaction still is arranged on the top of reaction kettle of the esterification 11, be connected with pipeline through valve between the import 20 of prepolymerization reaction still and the outlet 16 of reaction kettle of the esterification, the pipeline of the import 20 of connection prepolymerization reaction still and the outlet 16 of reaction kettle of the esterification is provided with EG (ethylene glycol) inlet 19 and additive inlet 17, and the pipeline of the import 20 of connection prepolymerization reaction still and the outlet 16 of reaction kettle of the esterification is provided with outward and adds hot device 18; Level is provided with empty pallet 5 in the several layers in the prepolymerization reaction still 7, top, the middle part of empty pallet 5 is provided with barrier disc 4 in each, be equipped with some holes on middle empty pallet 5 and the barrier disc 4, the outlet 2 of prepolymerization reaction still is arranged on the top of prepolymerization reaction still 7, the outlet 2 of prepolymerization reaction still is connected with seal for pipe joints through liquid level valve with the import 3 of the poly-reactor of final minification that is positioned at the poly-reactor top of final minification, be horizontally disposed with several layers in the poly-reactor 8 of final minification and be detained pallet 6, each is detained pallet 6 and is provided with some holes, the aperture in hole on the pallet 6 is detained less than being positioned at the bottom in the aperture in hole on the superposed delay pallet 6, the outlet that is positioned at the poly-reactor of final minification of poly-reactor 8 bottoms of final minification is connected with Send out pump 9, and the poly-reactor top of prepolymerization reaction still 7 and final minification is respectively equipped with vacuum pumping opening 21; The outside of the poly-reactor 8 of reaction kettle of the esterification 11 and final minification is provided with the chuck 1 that is connected as a single entity.
When the present invention works, vacuumize for prepolymerization reaction still 7 and the poly-reactor 8 of final minification by vacuum pumping opening, the steam and the EG that will separate out in time will reacting siphon away, the vacuum tightness in the holding device; Prepared slurry upwards enters in the reaction kettle of the esterification 11 through the import of reaction kettle of the esterification, slurry is contact heater at first, slurry after the heater via heating continues to rise, enter the isolation baffle plate outside from isolating baffle plate 13 tops, move downward then, pass the circulation passage 14 of isolating on the baffle plate 13 and enter the isolation baffle interior, and then rise and be heater heats, (the PTA/EG mol ratio the is bigger) EG (ethylene glycol) that utilization is separated out forms natural circulation for power, barrier plate 10 can stop that boiling liquid splashes, thereby more helping material evenly circulates, in continuous natural circulation, slurry generation esterification, the product after the esterification enter in the prepolymerization reaction still 7 through valve and pipeline under pressure differential, for further regulating the temperature that enters slurry in the prepolymerization reaction still 7, can regulate slurry temperature by outer well heater 18, in addition, can add Sb by the additive inlet
2O
3, TiO
2Deng additive; Slowly rise step by step in the hole that slurry after esterification part in prepolymerization reaction still 7 is passed on middle empty pallet 5 and the barrier disc 4, the intermediary passage of empty pallet 5 and barrier disc 4 slowly rose step by step during part was walked around, in the slurry uphill process after esterification, finish prepolymerization reaction, precondensation temperature in the kettle bottom is about 270 ℃-290 ℃, top is about 280 ℃-295 ℃, absolute pressure is 2000-3000pa, the residence time was about about 20-45 minute, through after the precondensation, limiting viscosity is about 0.2-0.3, the precondensation product is sent in the poly-reactor 8 of the relatively low final minification of liquid level by pressure reduction, and pass and be detained pallet 6 and descend step by step, finish the poly-reaction of final minification, and finally leave from the outlet of the poly-reactor of final minification, carrying out along with the poly-reaction of final minification, the viscosity of slurry is increasing, amplification step by step by the hole, offset the variation of slurry viscosity, avoided slurry bulk deposition in device, made slurry be detained the time basically identical that stops on the pallet 6, the inlet temperature of the poly-reactor of final minification is 280 ℃-295 ℃ at each, absolute pressure is 100-400pa in the still, and the residence time is 30-60 minute; React for slurry is remained under the suitable temperature, can in chuck 1, feed heat-transfer medium, to slurry heating and insulation; Can replenish ethylene glycol by the EG inlet in case of necessity, ethylene glycol is separated out after being heated, and produces a large amount of steam and forms big blister as propulsion source, promotes the slurry motion, independently finishes the transfer movement of slurry; From above-mentioned working process as can be seen, the present invention need not whipping appts and exterior power input, can finish production of polyester, saved the energy, can reduce mechanical fault and reduce running cost, because tube side is short between each reactor, compact construction, can reduce floor space, technical process is shorter, and equipment and pipeline reduce, and can reduce the use of mechanical pump, cost descends, and can also shorten the reaction times.
Claims (6)
1, a kind of single kettle continuous polyester equipment with full flow and without stirring, comprise that reaction kettle of the esterification, prepolymerization reaction still and final minification gather reactor, it is characterized in that: be provided with well heater in the reaction kettle of the esterification, the periphery of well heater uprightly is provided with the isolation baffle plate, isolate the baffle plate bottom and be provided with the circulation passage of connecting outside isolating in the baffle plate, the import of reaction kettle of the esterification is arranged on the well heater bottom and is positioned at isolates the baffle plate inboard, and the outlet of reaction kettle of the esterification is arranged on isolates the baffle plate outside; The coaxial reaction kettle of the esterification top that is arranged on of the poly-reactor of prepolymerization reaction still and final minification, the poly-reactor of final minification is positioned at prepolymerization reaction still periphery, the import of prepolymerization reaction still is arranged on the reaction kettle of the esterification top, be connected with pipeline through valve between the import of prepolymerization reaction still and the outlet of reaction kettle of the esterification, level is provided with empty pallet in the several layers in the prepolymerization reaction still, top, the middle part of empty pallet is provided with barrier disc in each, be equipped with some holes on middle empty pallet and the barrier disc, the outlet of prepolymerization reaction still is arranged on the top of prepolymerization reaction still, the outlet of described prepolymerization reaction still is connected with seal for pipe joints through liquid level valve with the import of the poly-reactor of final minification that is positioned at the poly-reactor top of final minification, be horizontally disposed with several layers in the poly-reactor of final minification and be detained pallet, each is detained pallet and is provided with some holes, the outlet that is positioned at the poly-reactor of final minification of the poly-reactor bottom of final minification is connected with Send out pump, and the poly-reactor top of prepolymerization reaction still and final minification is respectively equipped with vacuum pumping opening.
2, a kind of single kettle continuous polyester equipment with full flow and without stirring according to claim 1 is characterized in that: the aperture in hole on the pallet is detained less than being positioned at the bottom in the aperture in hole on the superposed delay pallet.
3, a kind of single kettle continuous polyester equipment with full flow and without stirring according to claim 1 and 2 is characterized in that: be positioned at the well heater top in the described reaction kettle of the esterification and be provided with barrier plate.
4, a kind of single kettle continuous polyester equipment with full flow and without stirring according to claim 1 and 2 is characterized in that: the outside of the poly-reactor of described reaction kettle of the esterification and final minification is provided with the chuck that is connected as a single entity.
5, a kind of single kettle continuous polyester equipment with full flow and without stirring according to claim 1 and 2 is characterized in that: the pipeline of the import of connection prepolymerization reaction still and the outlet of reaction kettle of the esterification is provided with ethylene glycol inlet and additive inlet.
6, a kind of single kettle continuous polyester equipment with full flow and without stirring according to claim 1 and 2 is characterized in that: the pipeline of the import of connection prepolymerization reaction still and the outlet of reaction kettle of the esterification is provided with outward and adds hot device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100880948A CN100532425C (en) | 2006-06-24 | 2006-06-24 | Single kettle whole flow continuous polyester equipment free from stirring |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100880948A CN100532425C (en) | 2006-06-24 | 2006-06-24 | Single kettle whole flow continuous polyester equipment free from stirring |
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| Publication Number | Publication Date |
|---|---|
| CN101092476A CN101092476A (en) | 2007-12-26 |
| CN100532425C true CN100532425C (en) | 2009-08-26 |
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| CNB2006100880948A Active CN100532425C (en) | 2006-06-24 | 2006-06-24 | Single kettle whole flow continuous polyester equipment free from stirring |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101831063B (en) * | 2010-04-29 | 2012-05-30 | 扬州惠通化工技术有限公司 | Combined type polyester reaction tower |
| CN102731759A (en) * | 2012-06-29 | 2012-10-17 | 江苏申久化纤有限公司 | Hot well applied in final polycondensation system |
| CN105778074B (en) * | 2016-04-22 | 2017-09-19 | 扬州惠通化工科技股份有限公司 | A kind of fat polymerization reaction unit |
| CN114405316B (en) * | 2022-01-14 | 2023-06-20 | 宜昌七朵云环境治理有限公司 | Fly ash treatment system and fly ash treatment method |
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| CN101092476A (en) | 2007-12-26 |
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| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Open chemical industry technological Co., Ltd. of the favor of Yangzhou Assignor: Yan Xuming Contract record no.: 2011320001146 Denomination of invention: Single kettle continuous polyester equipment with full flow and without stirring Granted publication date: 20090826 License type: Exclusive License Open date: 20071226 Record date: 20111101 |
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Owner name: OPEN CHEMICAL INDUSTRY TECHNOLOGICAL CO., LTD. OF Free format text: FORMER OWNER: YAN XUMING Effective date: 20150324 |
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Free format text: CORRECT: ADDRESS; FROM: 225000 YANGZHOU, JIANGSU PROVINCE TO: 225009 YANGZHOU, JIANGSU PROVINCE |
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Effective date of registration: 20150324 Address after: Wangjiang Road Development Zone in Yangzhou City, Jiangsu Province, No. 301 225009 Patentee after: Open chemical industry technological Co., Ltd. of the favor of Yangzhou Address before: 225000 room 2, Building 102, Yan Ling Garden, Huaihailu Road, Yangzhou, Jiangsu Patentee before: Yan Xuming |
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Effective date of registration: 20151230 Address after: 225009 No. 301 Wangjiang Road, Yangzhou economic and Technological Development Zone, Yangzhou, Jiangsu Patentee after: Oerlikon Barmag Huitong (Yangzhou) Engineering Co. Ltd. Address before: Wangjiang Road Development Zone in Yangzhou City, Jiangsu Province, No. 301 225009 Patentee before: Open chemical industry technological Co., Ltd. of the favor of Yangzhou |