CN203400699U - Melt phase polycondensation reactor and external pipe falling film element - Google Patents
Melt phase polycondensation reactor and external pipe falling film element Download PDFInfo
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- CN203400699U CN203400699U CN201320350989.XU CN201320350989U CN203400699U CN 203400699 U CN203400699 U CN 203400699U CN 201320350989 U CN201320350989 U CN 201320350989U CN 203400699 U CN203400699 U CN 203400699U
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- bellows
- pipe
- tube
- film supplying
- supplying tube
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Abstract
The utility model discloses a melt phase polycondensation reactor and an external pipe falling film element. The melt phase polycondensation reactor comprises a vertical shell, a seal head at the upper end of the vertical shell, a bottom shell at the lower end of the vertical shell, an external pipe falling film element, a heat transfer system, a film distributor and a helical ribbon agitator. The external pipe falling film element is a U-shaped pipe, the U-shaped falling film pipe is a circular pipe or a corrugated tube or a corrugated pipe; or the upper segment of the U-shaped falling film pipe is a corrugated tube or a corrugated pipe, and the lower segment of the U-shaped falling film pipe is a circular pipe. The reactor has the advantages of simple structure, sufficient heat exchange, large film forming area, uniform reaction temperature, high polycondensation efficiency, capability of meeting plug flow in the process, and the like, so that the reactor can be applied in the melt phase polycondensation reaction of polyethylene glycol terephthalate, polytrimethylene terephthalate, polybutylene terephthalate, polynaphthylene dioctyl phthalate gylcol ester, polyamide, polycarbonate, etc.
Description
Technical field
The utility model relates to a kind of melt polycondensation reaction equipment and extratubal falling film element.
Background technology
Polycondensation reaction implementation method has melt polycondensation, solution polycondensation, solid phase polycondensation and interfacial polycondensation etc., no matter wherein melt polycondensation all has obvious advantage from quality, economy, the feature of environmental protection and the industrializing implementation of product, therefore most polyester and polyamide etc. all adopt melt-polycondensation to produce, as PETG (PET), PTT (PTT), polybutylene terephthalate (PBT) (PBT), PEN (PEN), polyamide, Merlon etc.The Key of Implementation of melt polycondensation process is reactor, and desirable polycondensation reactor requirement Flow of Goods and Materials and admixture are good, and heat and mass efficiency is high, and process meets laminar flow, to obtain the polymerization product of quality homogeneous, realizes higher polycondensation efficiency simultaneously.
At present, industrial final polycondensation reactor is commonly used Horizontal stirring reactor, mainly contains disc type and cage.This class reactor is limited by melt rack bridge, and disk or net sheet must keep larger distance, and the surface area that causes unit volume melt to have is limited; Limited by structure of reactor, reaction temperature is even not; Melt residence time in molten bath is grown and affected by hydrostatic head, unfavorable to polycondensation process; Inside reactor relies on molten metal pool level poor mobile, and still wall place flow condition is not good, has more dead band; And adhered to by a large amount of melts, shaft produces suitable winding degree, further increase glutinous equipment improvement space little.Particularly for the occasion of the high glutinous melt of preparation, its too much dead band, carry secretly, application that severely degrade that limited film forming and Surface Renewal and mistake long residence time cause has limited this class reactor.
Utility model content
First object of the present utility model is to provide a kind of melt polycondensation reaction device, by the key structure of appropriate design heat transfer system, filming device and falling liquid film element, improve film forming efficiency, accurately control reaction temperature, dispersion and the mixing of strengthening melt, finally improve polycondensation efficiency and product quality.For this reason, the utility model is by the following technical solutions:
A kind of melt polycondensation reaction device, comprise upright shell, be connected in the end socket of upright shell upper end and the drain pan of lower end, end socket top is provided with charging aperture, upright shell top is provided with vacuum pumping opening, and drain pan bottom is provided with discharging opening, it is characterized in that: in described reactor, be vertically installed with one or more extratubal falling film element, extratubal falling film element is U-shaped film supplying tube, in pipe, is heat transfer medium path.
Adopting on the basis of technique scheme, the utility model also can adopt following further technical scheme:
In the drain pan of U-shaped film supplying tube below, agitator is installed.
Melt polycondensation reaction device is provided with heat transfer system, heat transfer system comprises: upper box, U-shaped film supplying tube, lower box are communicated with the circulation path that forms heat transfer medium successively, heat transfer medium import and outlet are connected in respectively on upper box and lower box, one end of U-shaped film supplying tube is connected on upper box base plate and communicates with upper box, and the other end of U-shaped film supplying tube is connected to lower box base plate up and down casing and communicates.
On U-shaped film supplying tube, be provided with filming device, filming device is the bin stock dish of Dual-layer structure, and upper strata base plate is drapery panel, and lower floor's base plate is cloth lamina membranacea, and drapery panel and cloth lamina membranacea all have hole, between the hole wall in hole and film supplying tube, leave annular gap.
As preferably, described agitator is helical ribbon agitator, and the power of agitator imports into from drain pan bottom.
U-shaped film supplying tube adopts pipe; Or the straight part of U-shaped film supplying tube adopts bellows tube or bellows; Or the epimere of the straight part of U-shaped film supplying tube is bellows tube or bellows, hypomere is pipe.
Bellows tube alternately consists of segmental arc and straight length, the difference of crest diameter and straight tube diameter and arc segment length (L
1) ratio be 0.05～1.0; Bellows is selected circular arc type bellows or scaling type bellows or circular arc tangential line type bellows or sinusoidal pattern bellows, and the ratio of the difference of crest diameter and trough diameter and pitch (L) is 0.05～1.0.
The maximum outside diameter of U-shaped film supplying tube is 5～100mm, and the height of U-shaped film supplying tube is 0.5～30m.
The outer chuck that is with of upright shell, the bottom of chuck and top are respectively equipped with the import of jacket heat-preservation medium and jacket heat-preservation media outlet; The outer drain pan chuck that is with of drain pan, the bottom of drain pan chuck and top are respectively equipped with the import of drain pan thermal insulation medium and the outlet of drain pan thermal insulation medium.
End socket is connected by end socket adpting flange, connecting bolt with upright shell, and upright shell is connected by drain pan adpting flange, drain pan connecting bolt with drain pan, is convenient to field-strip, installation.
Upright shell inwall is provided with support ring for supporting the casing that film supplying tube, bin stock dish are housed.
Second object of the present utility model is to provide a kind of extratubal falling film element, can improve film forming efficiency, accurately controls reaction temperature, simple in structure.For this reason, the utility model is by the following technical solutions:
Extratubal falling film element is U-shaped film supplying tube, in pipe, is heat transfer medium path; U-shaped film supplying tube adopts pipe; Or the straight part of U-shaped film supplying tube adopts bellows tube or bellows; Or the epimere of the straight part of U-shaped film supplying tube is bellows tube or bellows, hypomere is pipe;
The difference of crest diameter and straight tube diameter and arc segment length (L
1) ratio be 0.05～1.0; Bellows is selected circular arc type bellows or scaling type bellows or circular arc tangential line type bellows or sinusoidal pattern bellows, and the ratio of the difference of crest diameter and trough diameter and pitch (L) is 0.05～1.0.
The utility model can be for the melt polycondensation reaction of PETG (PET), PTT (PTT), polybutylene terephthalate (PBT) (PBT), PEN (PEN), polyamide, Merlon etc.
The utility model adopts U-shaped pipe as the extratubal falling film element of melt polycondensation reaction, and has heat transfer medium to circulate in U-shaped pipe, and that this reactor has is simple in structure, film forming area is large, heat exchange is abundant, reaction temperature is even.
The utility model, on the basis that the rheological behavior of polycondensation process characteristic and polymer system is fully realized, provides different U-shaped film supplying tubes.Select pipe as film supplying tube, for the glutinous melt of height, be conducive to flow, avoid producing and flow in " dead band ", prevent coking and color and luster flavescence; Select bellows tube or bellows as film supplying tube, can increase melt film forming area, control melt flow, the dispersion of strengthening melt with mix, improve film forming efficiency and Surface Renewal frequency, improve polycondensation efficiency; Select bellows tube or bellows with pipe combination as film supplying tube, can adaptive response process in the ever-increasing variation of melt viscosity, epimere adopts bellows tube or bellows to adapt to compared with the melt of low-viscosity, hypomere adopts pipe to adapt to the high melt that sticks.
The utility model designs by the double-deck annular gap between drapery panel and cloth lamina membranacea and film supplying tube, object is in order to make the melt level height of the bin stock dish lower floor uniformity of trying one's best, can guarantee that like this melt flow on every film supplying tube is identical, reduce the melt quality discrepancy between tube and tube.
Further, the utility model is provided with agitator in drain pan below U-shaped film supplying tube, make likely to exist the melt of nature difference fully mix and disperse between same film supplying tube and different film supplying tube, and further react under stirring condition, improve quality stability and the uniformity of melt.
Accompanying drawing explanation
Fig. 1 is the structural representation of embodiment 1 provided by the utility model.
Fig. 2 is the structural representation of embodiment 2 provided by the utility model.
Fig. 3 is the structural representation of embodiment 3 provided by the utility model.
Fig. 4 is the structural representation of bellows tube.
Fig. 5 a is the structural representation of circular arc type bellows.
Fig. 5 b is the structural representation of scaling type bellows.
Fig. 5 c is the structural representation of circular arc tangential line type bellows.
Fig. 5 d is the structural representation of sinusoidal pattern bellows.
Parts in figure, position and numbering: end socket 1, feed pipe 2, upper box base plate 3, casing 4, upper box 41, lower box 42, lower box base plate 5, bin stock dish 6, drapery panel 61, hole 611, cloth lamina membranacea 62, hole 621, upright shell 7, chuck 8, jacket heat-preservation medium import 9, drain pan adpting flange 10, drain pan chuck 11, drain pan thermal insulation medium import 12, discharging opening 13, drain pan 14, drain pan thermal insulation medium outlet 15, drain pan connecting bolt 16, U-shaped film supplying tube 17, jacket heat-preservation media outlet 18, vacuum pumping opening 19, support ring 20, heat transfer medium outlet or import 21, heat transfer medium import or export 22, end socket adpting flange 23, end socket connecting bolt 24, spacer 25, charging aperture 26, helical ribbon agitator 27.
The specific embodiment
Embodiment 1, with reference to accompanying drawing 1.
In the present embodiment, U-shaped film supplying tube adopts pipe.
A kind of melt polycondensation reaction device that the present embodiment provides, as shown in Figure 1, it comprises: upright shell 7, be connected in the end socket 1 of upright shell 7 upper ends and the drain pan 14 of lower end, end socket 1 top is provided with charging aperture 26, and upright shell 7 tops are provided with vacuum pumping opening 19, and drain pan 14 bottoms are provided with discharging opening 13, in upright shell 7, there are many vertically arranged U-shaped film supplying tubes 17, in U-shaped film supplying tube 17 below drain pans, agitator 27 are installed; Melt polycondensation reaction device has heat transfer system, comprise: heat transfer medium import or export 22, upper box 41, U-shaped film supplying tube 17, lower box 42, heat transfer medium outlet or import 21, upper box, U-shaped film supplying tube, lower box are communicated with the circulation path that forms heat transfer medium successively, be that heat transfer medium import or export 22 communicates with upper box 41, one end of U-shaped film supplying tube 17 is connected on upper box base plate 3 and communicates with upper box 41, the other end of U-shaped film supplying tube 17 is connected to lower box base plate 5 up and down casings 42 and communicates, and lower box 42 communicates with heat transfer medium outlet or import 21; On U-shaped film supplying tube 17, be provided with filming device, filming device is the bin stock dish 6 of Dual-layer structure, bin stock dish 6 upper strata base plates are drapery panel 61, lower floor's base plate is cloth lamina membranacea 62, drapery panel 61 and cloth lamina membranacea 62 have hole 611 and 621, between the hole wall in hole 611,621 and film supplying tube 17, leave annular gap.The profile of drain pan can be the various housings that are suitable in reactor lower end such as taper.
The outer chuck 8 that is with of upright shell 7, the bottom of chuck 8 and top are respectively equipped with jacket heat-preservation medium import 9 and jacket heat-preservation media outlet 18.
The outer drain pan chuck 11 that is with of drain pan 14, the bottom of drain pan chuck 11 and top are respectively equipped with drain pan thermal insulation medium import 12 and drain pan thermal insulation medium outlet 15.
End socket 1 is connected by end socket adpting flange 23, end socket connecting bolt 24 with upright shell 7, and upright shell 7 is connected by drain pan adpting flange 10, drain pan connecting bolt 16 with drain pan 14, is convenient to field-strip, installation.
Upright shell 7 inwalls are provided with support ring 20 for supporting the casing 4 that film supplying tube 17, bin stock dish 6 are housed, and both convenient installation, guaranteed again the perpendicularity of film supplying tube, improved cloth film uniformity.
As preferably, agitator 27 is helical ribbon agitator, and power imports into from drain pan bottom.
As preferably, the external diameter of U-shaped film supplying tube 17 is 5～100mm, and length is 0.5～30m.
In the present embodiment, the straight portion of U-shaped film supplying tube 17 is divided into bellows tube or bellows.
As shown in Figure 4, bellows tube alternately consists of segmental arc and straight length, crest diameter D
2with straight tube diameter D
1difference and circular arc segment length L
1ratio (D
2-D
1)/L
1=0.05～1.0.
The crest diameter D of U-shaped film supplying tube 17
2be 5～100mm, length is 0.5～30m.
As shown in Figure 5 a, bellows can be selected circular arc type bellows, and the rip cutting outline line that is also bellows is the tangent continuous wave of large small arc-shaped.
As shown in Figure 5 b, bellows can be selected scaling type bellows, is also that bellows alternately consists of expansion segment and contraction section.
As shown in Figure 5 c, bellows can be selected circular arc tangential line type bellows, and the rip cutting outline line that is also bellows is the continuous wave that circular arc and tangent line replace.
As shown in Fig. 5 d, bellows can be selected sinusoidal pattern bellows, is also that the rip cutting outline line of bellows is for sinusoidal wave.
In bellows, crest diameter D
2with trough diameter D
1the ratio (D of difference and pitch L
2-D
1)/L=0.05～1.0; Described pitch is the peak-to-peak distance of adjacent wave.
The other parts of the present embodiment and implementation method are identical with embodiment 1, and in Fig. 2, drawing reference numeral is identical with Fig. 1 represents identical implication.
In the present embodiment, the epimere of the straight part of U-shaped film supplying tube 17 is bellows tube or bellows 172, hypomere is pipe 171, epimere and hypomere are coaxial, and the length of epimere just determines according to the viscosity of charging melt, and viscosity height length is short, otherwise long, the length of hypomere just determines according to the viscosity of discharging melt, and viscosity height length is long, otherwise short; The structure of bellows tube, bellows is identical with embodiment's 2.
The crest diameter D of U-shaped film supplying tube 17
2be 5～100mm, length is 0.5～30m.
The other parts of the present embodiment and implementation method are identical with embodiment 1, and in Fig. 3, drawing reference numeral is identical with Fig. 1 represents identical implication.
In the present embodiment, according to the viscosity Variation Features of melt in polycondensation reaction process, the corresponding early stage of polycondensation reaction of film supplying tube and the position in later stage have different design features, and epimere adopts bellows tube or bellows to adapt to compared with the melt of low-viscosity, and hypomere adopts pipe to adapt to high glutinous melt.
Claims (10)
1. a melt polycondensation reaction device, comprise upright shell (7), be connected in the end socket (1) of upright shell (7) upper end and the drain pan (14) of lower end, end socket (1) top is provided with charging aperture (26), upright shell (7) top is provided with vacuum pumping opening (19), and drain pan (14) bottom is provided with discharging opening (13), it is characterized in that: in described reactor, be vertically installed with one or more extratubal falling film element, extratubal falling film element is U-shaped film supplying tube (17), in pipe, is heat transfer medium path.
2. a kind of melt polycondensation reaction device according to claim 1, is characterized in that: in U-shaped film supplying tube (17) below drain pan (14), agitator (27) is installed.
3. a kind of melt polycondensation reaction device according to claim 1, it is characterized in that: melt polycondensation reaction device is provided with heat transfer system, heat transfer system comprises: upper box (41), U-shaped film supplying tube (17), lower box (42) is communicated with the circulation path that forms heat transfer medium successively, heat transfer medium import and outlet are connected in respectively on upper box (41) and lower box (42), one end of U-shaped film supplying tube (17) is connected to upper box base plate (3) and above communicates with upper box (41), the other end of U-shaped film supplying tube (17) is connected to lower box base plate (5) up and down casings (42) and communicates.
4. according to the melt polycondensation reaction device described in claim 1 or 3, it is characterized in that: on U-shaped film supplying tube, be provided with filming device, filming device is the bin stock dish (6) of Dual-layer structure, upper strata base plate is drapery panel (61), lower floor's base plate is cloth lamina membranacea (62), drapery panel (61) and cloth lamina membranacea (62) all have hole (611,621), between the hole wall of hole (611,621) and film supplying tube (17), leave annular gap.
5. melt polycondensation reaction device as claimed in claim 2, is characterized in that: described agitator (27) is helical ribbon agitator, and the power of agitator (27) imports into from drain pan bottom.
6. according to a kind of melt polycondensation reaction device described in claim 4, it is characterized in that: U-shaped film supplying tube (17) adopts pipe; Or the straight part of U-shaped film supplying tube (17) adopts bellows tube or bellows; Or the epimere of the straight part of U-shaped film supplying tube (17) is bellows tube or bellows (172), and hypomere is pipe (171).
7. a kind of melt polycondensation reaction device according to claim 6, is characterized in that: bellows tube alternately consists of segmental arc and straight length, and the difference of crest diameter and straight tube diameter is 0.05 ~ 1.0 with arc segment length's ratio; Bellows is selected circular arc type bellows or scaling type bellows or circular arc tangential line type bellows or sinusoidal pattern bellows, and the difference of crest diameter and trough diameter is 0.05 ~ 1.0 with the ratio of pitch.
8. a kind of melt polycondensation reaction device according to claim 1, is characterized in that: the maximum outside diameter of U-shaped film supplying tube (17) is 5 ~ 100mm, and the height of U-shaped film supplying tube (17) is 0.5 ~ 30m.
9. a kind of melt polycondensation reaction device according to claim 1, is characterized in that: the outer chuck (8) that is with of upright shell (7), and the bottom of chuck and top are respectively equipped with jacket heat-preservation medium import (9) and jacket heat-preservation media outlet (18);
The outer drain pan chuck (11) that is with of drain pan (14), the bottom of drain pan chuck and top are respectively equipped with drain pan thermal insulation medium import (12) and drain pan thermal insulation medium outlet (15).
10. for the extratubal falling film element of reactor described in claim 1, it is characterized in that: extratubal falling film element is U-shaped film supplying tube (17), is heat transfer medium path in pipe; U-shaped film supplying tube (17) adopts pipe; Or the straight part of U-shaped film supplying tube (17) adopts bellows tube or bellows; Or the epimere of the straight part of U-shaped film supplying tube (17) is bellows tube or bellows (172), and hypomere is pipe (171);
Bellows tube alternately consists of segmental arc and straight length, and the difference of crest diameter and straight tube diameter is 0.05 ~ 1.0 with arc segment length's ratio; Bellows is selected circular arc type bellows or scaling type bellows or circular arc tangential line type bellows or sinusoidal pattern bellows, and the difference of crest diameter and trough diameter is 0.05 ~ 1.0 with the ratio of pitch.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320350989.XU CN203400699U (en) | 2013-06-17 | 2013-06-17 | Melt phase polycondensation reactor and external pipe falling film element |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320350989.XU CN203400699U (en) | 2013-06-17 | 2013-06-17 | Melt phase polycondensation reactor and external pipe falling film element |
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| Publication Number | Publication Date |
|---|---|
| CN203400699U true CN203400699U (en) | 2014-01-22 |
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ID=49936642
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320350989.XU Expired - Lifetime CN203400699U (en) | 2013-06-17 | 2013-06-17 | Melt phase polycondensation reactor and external pipe falling film element |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014201768A1 (en) * | 2013-06-17 | 2014-12-24 | 浙江理工大学 | Melt condensation polymerization reactor |
| CN106000250A (en) * | 2016-05-09 | 2016-10-12 | 浙江理工大学 | Row inter-tube falling film melt phase polycondensation reaction method and reactor thereof |
| CN112124873A (en) * | 2020-08-19 | 2020-12-25 | 平顶山神马工程塑料有限责任公司 | Horizontal polymerizer capable of quickly conveying high-viscosity molten materials |
-
2013
- 2013-06-17 CN CN201320350989.XU patent/CN203400699U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014201768A1 (en) * | 2013-06-17 | 2014-12-24 | 浙江理工大学 | Melt condensation polymerization reactor |
| CN106000250A (en) * | 2016-05-09 | 2016-10-12 | 浙江理工大学 | Row inter-tube falling film melt phase polycondensation reaction method and reactor thereof |
| CN106000250B (en) * | 2016-05-09 | 2018-08-21 | 浙江理工大学 | It is a kind of at falling liquid film melt polycondensation reaction method and its reactor between comb |
| CN112124873A (en) * | 2020-08-19 | 2020-12-25 | 平顶山神马工程塑料有限责任公司 | Horizontal polymerizer capable of quickly conveying high-viscosity molten materials |
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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 | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140122 |