CN203577790U - Integrated esterification reactor - Google Patents
Integrated esterification reactor Download PDFInfo
- Publication number
- CN203577790U CN203577790U CN201320685576.7U CN201320685576U CN203577790U CN 203577790 U CN203577790 U CN 203577790U CN 201320685576 U CN201320685576 U CN 201320685576U CN 203577790 U CN203577790 U CN 203577790U
- Authority
- CN
- China
- Prior art keywords
- shell
- esterification
- cylinder
- integral type
- esterifier
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000005886 esterification reaction Methods 0.000 title claims abstract description 26
- 230000032050 esterification Effects 0.000 title claims abstract description 25
- 150000007942 carboxylates Chemical class 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 4
- 230000007774 longterm Effects 0.000 abstract description 2
- -1 polyethylene terephthalate Polymers 0.000 abstract description 2
- 239000000126 substance Substances 0.000 abstract description 2
- 229920000139 polyethylene terephthalate Polymers 0.000 abstract 2
- 239000005020 polyethylene terephthalate Substances 0.000 abstract 2
- 238000005457 optimization Methods 0.000 abstract 1
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 description 13
- KKEYFWRCBNTPAC-UHFFFAOYSA-N Terephthalic acid Chemical compound OC(=O)C1=CC=C(C(O)=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-N 0.000 description 10
- 239000012530 fluid Substances 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 3
- 229920000728 polyester Polymers 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 208000037197 Partial atrioventricular septal defect Diseases 0.000 description 1
- QPKOBORKPHRBPS-UHFFFAOYSA-N bis(2-hydroxyethyl) terephthalate Chemical compound OCCOC(=O)C1=CC=C(C(=O)OCCO)C=C1 QPKOBORKPHRBPS-UHFFFAOYSA-N 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- FYIBGDKNYYMMAG-UHFFFAOYSA-N ethane-1,2-diol;terephthalic acid Chemical compound OCCO.OC(=O)C1=CC=C(C(O)=O)C=C1 FYIBGDKNYYMMAG-UHFFFAOYSA-N 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-N o-dicarboxybenzene Natural products OC(=O)C1=CC=CC=C1C(O)=O XNGIFLGASWRNHJ-UHFFFAOYSA-N 0.000 description 1
- 208000032705 ostium primum type atrial septal defect Diseases 0.000 description 1
- 208000005105 partial atrioventricular canal Diseases 0.000 description 1
- 238000006068 polycondensation reaction Methods 0.000 description 1
- 229920005644 polyethylene terephthalate glycol copolymer Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- KKEYFWRCBNTPAC-UHFFFAOYSA-L terephthalate(2-) Chemical compound [O-]C(=O)C1=CC=C(C([O-])=O)C=C1 KKEYFWRCBNTPAC-UHFFFAOYSA-L 0.000 description 1
- 239000000052 vinegar Substances 0.000 description 1
- 235000021419 vinegar Nutrition 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Abstract
The utility model belongs to the technical field of chemical equipment and in particular relates to an integrated esterification reactor for reacting polyethylene terephthalate (PET). The integrated esterification reactor mainly structurally comprises an upper cylinder and a lower cylinder with different diameters, wherein shell and tube type heat exchange tube bundles are arranged between the upper cylinder and the lower cylinder; the upper cylinder is in a large-diameter cylinder structure with a large gas phase space; an esterification vapor outlet is formed in the top of the upper cylinder; the lower cylinder is in a short cylinder section and elliptical seal head structure and is provided with an esterification object outlet. According to the structural optimization design, a middle guide cylinder and a baffle can achieve good guiding and mixing effects, so that materials are uniformly mixed in the kettle, and conditions are provided for an esterification reaction. According to the shell and tube type heat exchange tube bundles, materials can be uniformly heated, the heat transfer efficiency is improved, energy is saved, and the long-term operating cost of the reactor is reduced.
Description
Technical field
The utility model 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 processing, 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 purpose of this utility model 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 utility model 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 utility model 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 utility model, 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 utility model 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 the utility model embodiment 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 utility model 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 |
|---|---|---|---|
| CN201320685576.7U CN203577790U (en) | 2013-11-04 | 2013-11-04 | Integrated esterification reactor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320685576.7U CN203577790U (en) | 2013-11-04 | 2013-11-04 | Integrated esterification reactor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203577790U true CN203577790U (en) | 2014-05-07 |
Family
ID=50575770
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320685576.7U Expired - Lifetime CN203577790U (en) | 2013-11-04 | 2013-11-04 | Integrated esterification reactor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203577790U (en) |
-
2013
- 2013-11-04 CN CN201320685576.7U patent/CN203577790U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140507 |
|
| CX01 | Expiry of patent term |