CN103566860A - Integrated esterification reactor - Google Patents
Integrated esterification reactor Download PDFInfo
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- CN103566860A CN103566860A CN201310533653.1A CN201310533653A CN103566860A CN 103566860 A CN103566860 A CN 103566860A CN 201310533653 A CN201310533653 A CN 201310533653A CN 103566860 A CN103566860 A CN 103566860A
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- shell
- esterification
- barrel
- integral type
- tube bundle
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Abstract
The invention belongs to the technical field of chemical equipment, and particularly relates to an esterification reactor for reaction of polyethylene glycol terephthalate (PET). The major structure of the reactor comprises an upper barrel and a lower barrel which have different diameters, wherein a tube array heat exchange tube bundle is arranged between the upper barrel and the lower barrel, the upper barrel is of a large-diameter tubular structure with a large free space, an esterification steam outlet is arranged at the top of the upper barrel, and the lower barrel comprises a short barrel and an elliptical head and is provided with an esterification substance outlet. The esterification reactor has an optimized structure; a middle guide cylinder and a baffle can play roles in better guiding stream and mixing, so that materials can be uniformly mixed in a kettle so as to offer conditions for esterification reaction; the tube array heat exchange tube bundle can uniformly heat the materials, so that the esterification reactor can be used for improving the heat transfer efficiency and saving energy source, and is conductive to lowering the cost for long-term operation of equipment.
Description
Technical field
The invention belongs to technical field of chemical, particularly the esterifier of ethylene glycol terephthalate (PET is commonly called as polyester) reaction.
Background technology
The production of polyester is that esterification raw material ethylene glycol (EG) and terephthalic acid (TPA) (PTA) are coordinated in certain proportion in esterifier, suitable temperature, pressure condition in addition, thereby keep enough time to complete esterification, generate terephthalate vinegar (BHET), and then further the phthalic acid glycol ester generating is done to polycondensation and process, generate PETG.
Esterification is under 1.0-1.70:1 in the mol ratio of ethylene glycol (EG)/terephthalic acid (TPA) (PTA), and carry out 270 ℃ of left and right of temperature.
Traditional esterification is generally to complete in the continuous stir reactor stirring at a band, and bottom is inner coil pipe external jacket structure, and complex structure mixes and heats inhomogeneously, cause production efficiency low, and thermal loss is large, is unfavorable for energy-conserving and environment-protective.
Summary of the invention
The object of the present invention is to provide a kind of technological requirement that can meet in production of polyester, can reduce again the integral type esterifier of device fabrication cost.
The present invention is achieved through the following technical solutions: integral type esterifier, it is characterized in that agent structure comprises upper shell and the lower shell of different-diameter, and between upper shell and lower shell, be shell and tube heat-exchanging tube bundle; Described upper shell is the large-diameter cylinder body structure with larger gas-phase space, and esterification vapor outlet port is arranged at top; Described lower shell is that short shell ring adds ellipsoidal head structure, is provided with carboxylate outlet.
Usually, described shell and tube heat-exchanging tube bundle is connected with upper shell by conical shell.
In the middle of described shell and tube heat-exchanging tube bundle, guide shell is set, top arranges taper internals.
Described guide shell inwall is welded with baffle plate, is provided with agitating device in guide shell.
Described upper shell and lower shell are equipped with chuck outward.
Described conical shell is provided with chuck outward.
Reactor of the present invention also comprises the known upper low head in this field, upper low head chuck, hanging support, feed pipe parts, manhole, sidewall hanger etc. conventionally.
Reactor of the present invention, material enters in still from upper orifice, by the conical shell on guide shell top, is collected and is flowed into guide shell, and by being uniformly mixed, under the effect of agitator and guide shell, along heat exchanger tube fluid interchange, iterative cycles carries out esterification.When esterification is carried out, can produce a large amount of esterification steams, major diameter gas-liquid separation section in top can be got off the fluid separation applications of carrying secretly in esterification steam effectively, and esterification steam is discharged from top.
The present invention is optimal design structure, middle guide shell and baffle plate can play better water conservancy diversion and immixture, material is mixed in still, for esterification provides condition, shell and tube heat-exchanging tube bundle, can make material be heated evenly, and improves heat transfer efficiency, save the energy, be conducive to reduce the long-term operating cost of equipment.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment of the present invention integral type esterifier.
In figure, 1-low head, 2-low head chuck, 3-lower shell, 4-lower shell chuck, 5-tube bank, 6-conical shell, 7-conical shell chuck, 8-upper shell chuck, 9-hanging support, 10-upper shell, 11-upper cover, 12-upper cover chuck, 13-feed pipe parts, 14-manhole, 15-sidewall hanger, 16-cone internals, 17-agitator, 18-guide shell.
The specific embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention is described in detail.
embodiment:as shown in Figure 1, agent structure comprises upper shell 10 and the lower shell 3 of different-diameter to the present embodiment integral type esterifier structure, between upper shell 10 and lower shell 3, is shell and tube heat-exchanging tube bundle 5; Upper shell 10 is for having the large-diameter cylinder body of larger gas-phase space, and esterification vapor outlet port is arranged at top; Lower shell 3 adds ellipsoidal head structure for short shell ring, is provided with carboxylate outlet.
In embodiment, shell and tube heat-exchanging tube bundle 5 is connected with upper shell 10 by conical shell 6; In the middle of shell and tube heat-exchanging tube bundle 5, guide shell 18 is set, top arranges taper internals 16; Guide shell 18 inwalls are welded with baffle plate, are provided with agitator 17 in guide shell 18.Outer upper shell chuck 8, lower shell chuck 4 and the conical shell chuck 7 of being respectively equipped with of upper shell 10, lower shell 3 and conical shell 6.
As shown in Figure 1, the upper cover 11 of embodiment reactor is provided with esterification steam outlet, agitator mouth, feed pipe parts 13, manhole 14, and low head 1 is provided with discharging opening, and upper low head has upper cover chuck 12 and low head chuck 2 outward.On reactor, be also provided with sidewall hanger 15.
The chuck space of embodiment is used gas phase heating agent VP-1 to reach the object to gas-phase space insulation.Conical shell 6 inner conical internals 16 flow into guide shell 18 by material collection, make material fully mix and along heat-exchanging tube bundle 5 fluid interchanges, esterification is carried out smoothly under the effect of agitator 17.
The esterifier of embodiment is produced for PAVC, and material enters in still from upper orifice, by the taper internals on guide shell top, is collected and is flowed into guide shell, by being uniformly mixed, under the effect of agitator and guide shell, along heat exchanger tube fluid interchange, iterative cycles carries out esterification.When esterification is carried out, can produce a large amount of esterification steams, top major diameter gas-liquid separation section (upper shell) can be got off the fluid separation applications of carrying secretly in esterification steam effectively, and esterification steam is discharged from top.
Claims (6)
1. integral type esterifier, is characterized in that agent structure comprises upper shell and the lower shell of different-diameter, is shell and tube heat-exchanging tube bundle between upper shell and lower shell; Described upper shell is the large-diameter cylinder body structure with larger gas-phase space, and esterification vapor outlet port is arranged at top; Described lower shell is that short shell ring adds ellipsoidal head structure, is provided with carboxylate outlet.
2. integral type esterifier as claimed in claim 1, is characterized in that shell and tube heat-exchanging tube bundle is connected with upper shell by conical shell.
3. integral type esterifier as claimed in claim 1, is characterized in that, in the middle of described shell and tube heat-exchanging tube bundle, guide shell is set, and top arranges taper internals.
4. integral type esterifier as claimed in claim 3, is characterized in that described guide shell inwall is welded with baffle plate, is provided with agitating device in guide shell.
5. integral type esterifier as claimed in claim 1, is characterized in that upper shell and lower shell are equipped with chuck outward.
6. integral type esterifier as claimed in claim 2, is characterized in that described conical shell is provided with chuck outward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310533653.1A CN103566860A (en) | 2013-11-04 | 2013-11-04 | Integrated esterification reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310533653.1A CN103566860A (en) | 2013-11-04 | 2013-11-04 | Integrated esterification reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103566860A true CN103566860A (en) | 2014-02-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310533653.1A Pending CN103566860A (en) | 2013-11-04 | 2013-11-04 | Integrated esterification reactor |
Country Status (1)
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| CN (1) | CN103566860A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816847A (en) * | 2014-03-07 | 2014-05-28 | 中石化上海工程有限公司 | Combined reactor and application thereof |
| CN105536679A (en) * | 2016-01-29 | 2016-05-04 | 扬州惠通化工技术有限公司 | Esterification reaction system |
| CN109621873A (en) * | 2019-01-21 | 2019-04-16 | 中建安装集团有限公司 | A kind of esterification device |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201756522U (en) * | 2010-06-01 | 2011-03-09 | 北京三联虹普新合纤技术服务股份有限公司 | Novel post-polymerizer for polyamide PA6 |
-
2013
- 2013-11-04 CN CN201310533653.1A patent/CN103566860A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201756522U (en) * | 2010-06-01 | 2011-03-09 | 北京三联虹普新合纤技术服务股份有限公司 | Novel post-polymerizer for polyamide PA6 |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103816847A (en) * | 2014-03-07 | 2014-05-28 | 中石化上海工程有限公司 | Combined reactor and application thereof |
| CN105536679A (en) * | 2016-01-29 | 2016-05-04 | 扬州惠通化工技术有限公司 | Esterification reaction system |
| CN105536679B (en) * | 2016-01-29 | 2017-07-07 | 扬州惠通化工科技股份有限公司 | A kind of esterification system |
| CN109621873A (en) * | 2019-01-21 | 2019-04-16 | 中建安装集团有限公司 | A kind of esterification device |
| CN109621873B (en) * | 2019-01-21 | 2024-04-16 | 中建安装集团有限公司 | Esterification reaction device |
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Application publication date: 20140212 |