CN101831063B - Combined type polyester reaction tower - Google Patents
Combined type polyester reaction tower Download PDFInfo
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- CN101831063B CN101831063B CN2010101600546A CN201010160054A CN101831063B CN 101831063 B CN101831063 B CN 101831063B CN 2010101600546 A CN2010101600546 A CN 2010101600546A CN 201010160054 A CN201010160054 A CN 201010160054A CN 101831063 B CN101831063 B CN 101831063B
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- piece housing
- polycondensation
- esterification
- combined type
- reaction tower
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Abstract
The invention relates to a combined type polyester reaction tower in the field of polyester production equipment. The combined type polyester reaction tower comprises a closed vertical shell. The vertical shell is divided into a polycondensation section shell at the upper part and an esterification section shell at the lower part by a diaphragm; a plurality of choked flow distribution plates are arranged in the polycondensation section shell; a liquid outlet is arranged at the upper part of the polycondensation section shell, and a liquid inlet is arranged at the lower part of the polycondensation section shell; a main heater is arranged below the esterification section shell, the outlet of the main heater is connected with the lower part of the esterification section shell, a reflux hole is arranged at the lower side of the esterification section shell, a gas phase outlet is arranged at the upper side of the esterification section shell, and the inlet arranged at the lower part of the main heater and the reflux hole are connected with an inlet of reaction materials; and a liquid inlet at the bottom of the polycondensation section shell is connected with the outlet of an auxiliary heater, the inlet of the auxiliary heater is connected with a dynamic glycol inlet through one way of a three-way pipeline, and another way is connected with the reflux hole through a liquid level control valve. The invention can enable reaction to be more complete and can be used for production of polyester including PET, PEN, PBT and PTT.
Description
Technical field
The present invention relates to a kind of production unit of PET industry, a kind of reaction unit that particularly uses in esterification and the polycondensation.
Background technology
In the prior art; Esterification during production of polyester and polycondensation are generally carried out in reaction tower that separates or reaction kettle, and as a kind of esterifier is arranged in the prior art, its publication number is CN101618304A; Its structure mainly includes the polylith column plate; A downtake pipe and a riser all are installed on every block of column plate, and riser connects rotatable gas distributor, and gas distributor is made up of air entraining pipe, fan sheet and nozzle; Every block of column plate all keeps the liquid of certain liquid level, and solid catalyst is arranged in the liquid.Liquid phase is the component that contains carboxylic acid, in reactor drum downwards by an esterification column plate current to next piece column plate, with the pure steam counter-flow reaction of rising.Also have a kind of polycondensation reaction device in the prior art, the disclosed polycondensation tower of CN2741645Y for example, it comprises the double hull of being made up of inner housing and body skin; Be chuck between inner housing and the body skin, body skin is provided with the heating agent import and export that is communicated with chuck, and double hull is provided with the steam that is communicated with the inner housing inner chamber and extracts mouth, opening for feed and discharge port out; It is characterized in that: said double hull uprightly is provided with; Opening for feed is arranged at double hull top and stretches in the inner housing, and discharge port is arranged at the bottom of double hull, is provided with some horizontally disposed tower trays between opening for feed and the discharge port; Said tower tray comprises housing, is provided with some leakage material passages in the housing.At present, esterification and polycondensation generally are divided into two reaction kettles to be carried out, and its structure is compact inadequately, and production cost is low, and equipment is easy for installation; Simultaneously, its reaction efficiency is low.
Summary of the invention
The purpose of this invention is to provide a kind of combined type polyester reaction tower, be intended to solve device structure complicacy and the low problem of working efficiency in the prior art.
The objective of the invention is to realize like this: a kind of combined type polyester reaction tower is characterized in that comprising the upright shell of sealing through dividing plate upright shell being separated into the polycondensation piece housing on top and the esterification piece housing of bottom in the upright shell; Level is provided with some choked flow break plates in the said polycondensation piece housing; Polycondensation piece housing top is provided with liquid outlet, and polycondensation piece housing bottom is provided with fluid inlet; Said esterification piece housing below is provided with primary heater; The outlet on primary heater top links to each other with said esterification piece housing bottom; Esterification piece housing downside is provided with refluxing opening; Esterification piece housing upside is provided with gaseous phase outlet, and the import of primary heater bottom links to each other with reacting material inlet with said refluxing opening simultaneously; The fluid inlet of polycondensation piece housing bottom links to each other with the outlet of auxiliary heater; The import of auxiliary heater connects the import of power terepthaloyl moietie through triplate line one tunnel; Another road connects said refluxing opening through level control valve, and the control end of level control valve is positioned at the polycondensation piece housing.
This device is connected as a single entity esterification section and polycondensation section, and during work, reaction mass is introduced in the primary heater and heats; Get into then in the esterification piece housing; Refluxing opening from the esterification piece housing leaves again, and gets into the primary heater import once more, realizes circulation; Gaseous phase outlet on the esterification piece housing can link to each other with vacuum suction device, constantly takes the by product that reaction generates away; In the said process, mixing raw material generation esterification; After esterification proceeds to a certain degree; Get in the auxiliary heater through power terepthaloyl moietie injection through the mixed solution of level control valve after esterification; After heating, get in the polycondensation piece housing; In the polycondensation piece housing, carry out polycondensation, reacted material leaves from liquid outlet, gets in the reaction unit that next step final minification gathers.In the above-mentioned working process, the flow process of material outside housing is short, and thermosteresis is little, can guarantee that raw material is under the good and controlled temperature of reaction, and reaction efficiency is high; Simultaneously, the compact construction of equipment is convenient to install and arrange.Can be used in the production of polyester such as PET, PEN, PBT, PTT.
For avoiding reaction mass to form turbulent flow, be provided with static decollator in the import of said primary heater and auxiliary heater.Static equispaced disperser plays unhurried current and current-sharing effect, makes the each several part of reaction raw materials all can obtain impartial heater meeting, simultaneously, and the reaction mass good mixing.
For the further reaction mass that guarantees becomes the release reaction by product better that flows also in order, said primary heater exit end is provided with the upright cylindrical shell that stretches in the esterification piece housing, and upright cylindrical shell is nested with urceolus outward, and the lower side of urceolus is provided with opening.Reaction mass overflow in the upright cylindrical shell gets into urceolus, flows in the esterification piece housing from outer tube bottom again, and the each several part of the reaction mass gas-phase space of all having an opportunity to contact is to separate out by product.Be further to guarantee the reaction mass uniflux, the opening of said urceolus bottom is near the refluxing opening setting, separates through dividing plate radially between the two.
As further improvement of the present invention; Said polycondensation piece housing internal upper part is provided with upwardly extending cylindrical baffle, and the baffle plate bottom links to each other the baffle plate upper opening with polycondensation piece housing inwall; The side of baffle plate offers liquid flow hole, and said liquid outlet is arranged on the polycondensation piece housing opposite side away from liquid flow hole.For further guaranteeing even discharging, said liquid flow hole is provided with a plurality of in the baffle plate side axial, is used to control liquid level unification inside and outside baffle plate at top.
For further promoting the carrying out of polycondensation, said polycondensation piece housing top is provided with the terepthaloyl moietie gaseous phase outlet, and the baffle plate top is provided with the umbrella crown of taper, offers some bar holes on the baffle plate of umbrella crown downside.Vacuumize through gaseous phase outlet, what can promote to react further carries out, and avoids backward reaction, improves productive rate; Umbrella crown and bar hole have the froth breaking effect.
For guaranteeing that in the polycondensation piece housing, reaction mass can reach the plug flow effect, fully to react, said choked flow break plate is provided with some restricted orifice.Pore size distribution on the adjacent two layers choked flow break plate is uneven, and wherein the macropore of one deck is positioned at periphery, and aperture is positioned at the center, and the macropore of another layer is positioned at the center, and aperture is positioned at periphery, guarantee material within it portion be " S " type and flow.
Description of drawings
Fig. 1 is the structural representation of one embodiment of the present invention.
The A of Fig. 2 Fig. 1 is to partial view.
The B-B of Fig. 3 Fig. 1 is to view.
The C-C of Fig. 3 Fig. 1 is to view.
The D-D of Fig. 5 Fig. 1 is to view.
The local structure synoptic diagram of Fig. 6 another embodiment of the invention.
Wherein, 1 baffle plate, 2 liquid outlets, 3 choked flow break plates, 4 upright shell, 5 fluid inlets; 6 refluxing openings, 7 auxiliary heaters, 8,11 static equispaced devices, 9 level control valves, 10 primary heater imports, 12 primary heaters; 13 upright cylindrical shells, 14 urceolus, 15,22 gaseous phase outlets, 16 dividing plates, 17 dividing plates radially; 18 restricted orifice, 19 liquid flow holes, 20 openings, 21 bar holes, 23 umbrella crowns.
Embodiment
Shown in Fig. 1-5, be a kind of combined type polyester reaction tower, its structure mainly includes the upright shell 4 of sealing, and upright shell 4 can adopt the double hull of chuck, and chuck inside can feed the heating medium heating; Through dividing plate 16 upright shell 4 is separated into the polycondensation piece housing on top and the esterification piece housing of bottom in the upright shell 4; Level is provided with some choked flow break plates 3 in the polycondensation piece housing; Polycondensation piece housing top is provided with liquid outlet 2, and polycondensation piece housing bottom is provided with fluid inlet 5; Esterification piece housing below is provided with primary heater 12; The outlet on primary heater 12 tops links to each other with said esterification piece housing bottom; Esterification piece housing downside is provided with refluxing opening 6; Esterification piece housing upside is provided with gaseous phase outlet 15, and the primary heater import 10 of primary heater 12 bottoms links to each other with reacting material inlet with said refluxing opening 6 simultaneously; The fluid inlet 5 of polycondensation piece housing bottom links to each other with the outlet of auxiliary heater 7; The import of auxiliary heater 7 connects the import of power terepthaloyl moietie through triplate line one tunnel; Another road connects said refluxing opening 6 through level control valve 9, and the control end of level control valve 9 is positioned at the polycondensation piece housing.Be provided with static decollator 11,8 in the import of primary heater 12 and auxiliary heater 7.The primary heater exit end is provided with the upright cylindrical shell 13 that stretches in the esterification piece housing, is nested with urceolus 14 outside the upright cylindrical shell 13, and the lower side of urceolus 14 is provided with opening 20; The opening 20 of urceolus bottom is provided with near refluxing opening 6, separates through dividing plate 17 radially between the two.Polycondensation piece housing internal upper part is provided with upwardly extending cylindrical baffle 1, and baffle plate 1 bottom links to each other with polycondensation piece housing inwall, baffle plate 1 upper opening, and the side of baffle plate 1 offers liquid flow hole 19, and liquid outlet 2 is arranged on the polycondensation piece housing opposite side away from liquid flow hole 19.Liquid flow hole 19 is provided with a plurality of in the baffle plate side axial, each liquid flow hole 19 flow area from bottom to top strengthens step by step.Choked flow break plate 3 is provided with some restricted orifice 18; The pore size distribution of the restricted orifice on the adjacent two layers choked flow break plate is uneven, and wherein the macropore of one deck is positioned at periphery, and aperture is positioned at the center, and the macropore of another layer is positioned at the center, and aperture is positioned at periphery.
During work, the reaction mass that terephthalic acid and terepthaloyl moietie are formed by the mol ratio of 1.1-2 is introduced into heating in the primary heater 12, and heating medium can adopt vapour phase or liquid phase heat-conduction oil etc.; Reaction mass after the heating gets in the esterification piece housing; Refluxing opening from the esterification piece housing leaves again, and gets into the primary heater import once more, utilizes thermal convection and siphon principle to realize circulation; Gaseous phase outlet on the esterification piece housing links to each other with process tower; Constantly remove the by product that reaction generates, esterification section conversion zone is the malleation reaction, and pressure can be controlled according to processing requirement; In the said process, mixing raw material generation esterification; After esterification proceeds to a certain degree, get in the auxiliary heater through the pressure difference of the mixed solution of level control valve after, after heating in the entering polycondensation piece housing through moving esterification section and polycondensation section with esterification; Power EG act as, and when getting into the polycondensation section, EG at high temperature vaporizes; Play stirring and pushing effect to material; In the polycondensation piece housing, carry out polycondensation, reaction mass passes each choked flow break plate 3 from bottom to top step by step, recrosses baffle plate 1; Finally leave, get in the reaction unit that next step final minification gathers from liquid outlet 2.
Embodiment 2
Like Fig. 6, be with the difference of embodiment 1: polycondensation piece housing top is provided with terepthaloyl moietie gaseous phase outlet 22, and the baffle plate top is provided with the umbrella crown 23 of taper, offers some bar holes 21 on the baffle plate 1 of umbrella crown 23 downsides.
The present invention is not limited to the foregoing description, as those skilled in the art, from the technical scheme of the foregoing description, obtains enlightenment, through formed technical schemes of means such as simple conversion, equivalent substitutions, all falls in protection scope of the present invention.
Claims (7)
1. combined type polyester reaction tower comprises the upright shell of sealing through dividing plate upright shell being separated into the polycondensation piece housing on top and the esterification piece housing of bottom in the upright shell; Level is provided with some choked flow break plates in the said polycondensation piece housing; Polycondensation piece housing top is provided with liquid outlet, and polycondensation piece housing bottom is provided with fluid inlet; Said esterification piece housing below is provided with primary heater; The outlet on primary heater top links to each other with said esterification piece housing bottom; Esterification piece housing downside is provided with refluxing opening; Esterification piece housing upside is provided with gaseous phase outlet, and the import of primary heater bottom links to each other with reacting material inlet with said refluxing opening simultaneously; The fluid inlet of polycondensation piece housing bottom links to each other with the outlet of auxiliary heater; The import of auxiliary heater connects the import of power terepthaloyl moietie through triplate line one tunnel; Another road connects said refluxing opening through level control valve, and the control end of level control valve is positioned at the polycondensation piece housing; Be provided with static decollator in the import of said primary heater and auxiliary heater; It is characterized in that: said primary heater exit end is provided with the upright cylindrical shell that stretches in the esterification piece housing, and upright cylindrical shell is nested with urceolus outward, and the lower side of urceolus is provided with opening.
2. a kind of combined type polyester reaction tower according to claim 1 is characterized in that: the opening of said urceolus bottom is near the refluxing opening setting, separates through dividing plate radially between the two.
3. a kind of combined type polyester reaction tower according to claim 1; It is characterized in that: said polycondensation piece housing internal upper part is provided with upwardly extending cylindrical baffle; The baffle plate bottom links to each other with polycondensation piece housing inwall; The baffle plate upper opening, the side of baffle plate offers liquid flow hole, and said liquid outlet is arranged on the polycondensation piece housing opposite side away from liquid flow hole.
4. a kind of combined type polyester reaction tower according to claim 3 is characterized in that: said liquid flow hole is provided with a plurality of in the baffle plate side axial.
5. a kind of combined type polyester reaction tower according to claim 3; It is characterized in that: said polycondensation piece housing top is provided with the terepthaloyl moietie gaseous phase outlet; The baffle plate top is provided with the umbrella crown of taper, offers some foamy bar holes that are used to capture on the baffle plate of umbrella crown downside.
6. a kind of combined type polyester reaction tower according to claim 1 is characterized in that: said choked flow break plate is provided with some restricted orifice.
7. a kind of combined type polyester reaction tower according to claim 6; It is characterized in that: the pore size distribution on the adjacent two layers choked flow break plate is uneven, and wherein the macropore of one deck is positioned at periphery, and aperture is positioned at the center; The macropore of another layer is positioned at the center, and aperture is positioned at periphery.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101600546A CN101831063B (en) | 2010-04-29 | 2010-04-29 | Combined type polyester reaction tower |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010101600546A CN101831063B (en) | 2010-04-29 | 2010-04-29 | Combined type polyester reaction tower |
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| CN101831063A CN101831063A (en) | 2010-09-15 |
| CN101831063B true CN101831063B (en) | 2012-05-30 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105664796B (en) * | 2016-02-23 | 2017-12-22 | 扬州惠通化工科技股份有限公司 | Vertical esterification Prepolycondensating reactor and the method for being esterified prepolymerization reaction |
| CN105566622B (en) * | 2016-02-23 | 2017-05-31 | 扬州惠通化工科技股份有限公司 | A kind of fat polymerization reaction 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 |
| CN105771816B (en) * | 2016-04-22 | 2018-01-23 | 扬州惠通化工科技股份有限公司 | Fat polymerization integral type reaction tower |
| CN105771868B (en) * | 2016-04-22 | 2017-09-19 | 扬州惠通化工科技股份有限公司 | A kind of kettle device of fat polymerization two |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| DE10331952A1 (en) * | 2003-07-15 | 2005-02-10 | Degussa Ag | Apparatus and process for discontinuous polycondensation |
| CN1281654C (en) * | 2004-11-23 | 2006-10-25 | 严旭明 | Esterification and prepolycondensation two-in-one reaction tower for the production of polyester |
| CN100387634C (en) * | 2005-08-09 | 2008-05-14 | 严旭明 | A polymerization reaction tower |
| CN100532425C (en) * | 2006-06-24 | 2009-08-26 | 严旭明 | Single kettle whole flow continuous polyester equipment free from stirring |
| CN201686647U (en) * | 2010-04-29 | 2010-12-29 | 扬州惠通化工技术有限公司 | Combined polyester reaction tower |
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Effective date of registration: 20160205 Address after: Wangjiang Road Development Zone in Yangzhou City, Jiangsu Province, No. 301 225009 Patentee after: Oerlikon Barmag Huitong (Yangzhou) Engineering Co. Ltd. Address before: 225008 No. 18 Hung Road, Yangzhou Development Zone, Jiangsu, China Patentee before: Open chemical industry technological Co., Ltd. of the favor of Yangzhou |