CN207576420U - A kind of falling liquid film melt polycondensation reaction device - Google Patents

Abstract

The utility model is related to a kind of falling liquid film melt polycondensation reaction devices.Connection end socket above reactor tower body, lower section connects bottom case, end socket is connected with heating agent room and supplies room, the lower plate of supplies room is material distribution plate, the material falling liquid film support tube for having arranged in rows on distribution plate passes through, and the both sides of falling liquid film support tube are each configured with being located at the cloth fenestra with arranging between adjacent falling liquid film support tube on distribution plate；Falling liquid film support tube is sleeve structure, and with row, the tube spacing of adjacent two falling liquid film support tubes is 4~60mm, a diameter of 4~100mm of falling liquid film support tube；Blender, screw rod and material outlet are equipped in bottom case.This melt polycondensation reaction device can provide larger film forming area, and devolatilization is efficient, and residence time destribution is narrow, suitable for implementing the melt polycondensation reaction of the materials such as polyester.

Description

A Falling Film Melt Polycondensation Reactor

technical field

The utility model relates to a melting polycondensation reactor, in particular to a melting polycondensation reaction device for falling film flow of high-viscosity materials, which belongs to the technical field of polymer production equipment.

Background technique

In the process of polycondensation reaction to prepare polymer materials such as polyester and polyamide, the melt polycondensation reaction generally takes place in a horizontal stirred reactor. After the melt polycondensation of the material reaches a certain stage in this type of equipment, it is difficult to further increase the molecular weight of the product, and the material is easy to Heating is uneven, side reactions such as thermal oxidation degradation occur, and the residence time distribution is wide; and this type of equipment occupies a large area, and the investment cost is high. The operation of the equipment requires a high-power external power consumption, and the output of the device is also limited.

In recent years, falling film melt polycondensation reactors outside the tube have also been used to prepare high-viscosity materials by melt polycondensation. Therefore, it will cause adverse effects on the uniformity of the product, and it is urgent to provide a high-efficiency falling film melting polycondensation reaction device that matches the film-forming flow properties of the material with the reaction process and controls the flow state and residence time of the material.

Utility model content

The purpose of the utility model is to overcome the deficiencies of the prior art and provide a falling film melting polycondensation reactor, which has an ingenious structural design, can make the material reaction temperature uniform, the film forming fluidity is good, the film forming area is large, and the devolatilization efficiency is high , and finally obtain high-quality polymer products, for this reason, the following technical solutions are proposed;

A falling film melting polycondensation reactor, comprising a tower body, a head connected to the upper end of the tower body and a bottom shell connected to the lower end of the tower body, the head includes a first heat medium chamber, a second heat medium chamber and a material chamber, the first The first heat medium chamber has a reactor heat medium inlet/outlet, the second heat medium chamber has a reactor heat medium outlet/inlet, and the lower bottom plate of the material chamber is a material distribution plate;

There is a feeding pipe on the top of the head, and a number of diversion pipes are connected under the feeding pipe, and the diversion pipes communicate with the material chamber;

There are rows of falling film support tubes passing through the distribution plate, each row has at least two; the distance between two adjacent falling film support tubes in the same row is 4-60 mm, and the diameter of the falling film support tubes is 4~100mm;

The distribution plate is provided with film cloth holes which belong to each falling film support tube, and the film cloth hole to which each falling film support tube belongs is located between the falling film support tube facing the two adjacent falling film support tubes in the same row. On the side, the film holes belonging to two adjacent falling film support tubes are not connected;

The falling film support tube is a casing structure, the inner tube of the falling film support tube communicates with the first heat medium chamber, and the outer tube of the falling film support tube communicates with the second heat medium chamber.

Further, the outer tube of the falling film support tube is a circular tube or a circular tube connected in multiple segments, and the diameters of the circular tubes connected in multiple segments become smaller from top to bottom.

As a further improvement of the utility model, there is a transverse support wire connection between two adjacent falling film support tubes in the same row.

As a further improvement of the utility model, the number, size, shape and relative position of the film cloth holes to which each falling film support tube belongs are exactly the same as those of other falling film support tubes, but each row is the most The falling film support tube at the outer end is an exception, and there is no film distribution hole on the outside; the minimum distance between the inner wall of the film distribution hole to which each falling film support tube belongs and the outer wall of the falling film support tube is less than 5mm, and it belongs to two adjacent falling film support tubes. The cloth membrane holes of the membrane support tube are not connected.

Further, the film cloth hole to which the falling film support pipe belongs is close to the pipe wall of the falling film support pipe, and the film cloth holes to which two adjacent falling film support pipes belong are not connected.

As a further improvement of the utility model, there can be one or more film cloth holes on one side of each falling film support tube, and when there is only one film cloth hole on one side of the falling film support tube, the film cloth holes are located When there are multiple film cloth holes on one side of the falling film support tube, the multiple film cloth holes are symmetrically distributed on the line connecting the axes of the falling film support tubes in the same row.

As a further improvement of the utility model, the effective cross-sectional area of the film cloth hole on one side of each falling film support tube on the distribution plate is 1-200 mm ² , and the effective cross-sectional area of the film cloth hole refers to the thickness direction of the distribution plate The smallest cross-sectional area available for highly viscous fluids to flow.

In the utility model, the shape of the cloth film hole can be arc-shaped, triangular, polygonal, etc., without special limitation; It can be varied, such as tapered, and is not particularly limited.

As a further improvement of the utility model, the tower body is installed vertically, the tower body and the upper end of the head are connected by the head flange fastener, the tower body and the bottom shell below are connected by the bottom shell flange fastener, and the upper end of the tower body There is a vacuum degassing port, there is a tower jacket on the tower body, and the tower jacket heat medium inlet and the tower body jacket heat medium outlet are respectively arranged on the tower body jacket; the bottom shell is conical, and the outside of the bottom shell is installed There is a bottom shell jacket, and the bottom shell jacket is respectively provided with a heat medium inlet of the bottom shell jacket and a heat medium outlet of the bottom shell jacket, a screw rod is installed inside the bottom shell, and a material outlet is also provided at the bottom of the bottom shell.

As a further improvement of the utility model, a stirrer is installed inside the bottom shell, and the stirrer can be of paddle type, frame type, anchor type, ribbon type and other structures, and there is no special limitation.

The utility model cleverly designs the combined structure of the film cloth holes and the falling film support pipes, after the molten material flows out from the film cloth holes on both sides of the falling film support pipes, a stable space is formed between the falling film support pipes arranged in rows. The falling film flow can effectively avoid the uneven flow phenomenon around the outside of the tube when the falling film flow outside the tube is undergoing polycondensation reaction. The melt is supported by the falling film support tubes on both sides between the tubes, and the velocity distribution of the falling film flow in different regions The range is small and the residence time distribution is narrow; since devolatilization can be carried out on both sides of the melt film between the tubes, compared with the previous falling film outside the tube, the melt polycondensation efficiency is higher, and the flow of the falling film is controlled between two adjacent drops. On the fixed track formed by the membrane support tube, the process of the melt polycondensation reaction and the change of the physical properties of the melt match the development of the falling film flow, the overall residence time of the material is controllable, and it is easy to obtain high-quality polymerization products.

Description of drawings

Fig. 1 is a schematic structural view of Embodiment 1 of the present utility model.

Fig. 2 is a schematic structural view of Embodiment 2 of the present utility model.

Figure 3a is a schematic diagram of the distribution of two square film holes on one side of the falling film support tube.

Figure 3b is a schematic diagram of the distribution of a semicircular film cloth hole on one side of the falling film support tube.

Figure 4 is a schematic diagram of the distribution of film holes on the distribution plate.

Fig. 5 is a schematic diagram of the structure of the falling film outside the tube of the comparative example 1 with concentric annular slotted film cloth holes.

Fig. 6 is a schematic diagram of the structure of intercommunicating slit-type film cloth holes in the falling film between tubes of Comparative Example 2.

Explanation of reference signs: 1-head, 2-first heat medium chamber, 3-second heat medium chamber, 4-material chamber, 4A-distribution plate, 4A1-film cloth hole, 5-tower body jacket, 5A - tower body jacket heat medium inlet/outlet, 5B-tower body jacket heat medium outlet/inlet, 6-tower body, 7-tower body and bottom shell connecting flange, 8-bottom shell jacket, 8A-bottom shell Jacket heat medium inlet/outlet, 8B-bottom shell jacket heat medium out/entrance, 9-bottom shell, 10-screw, 11-material outlet, 12-stirrer, 13-falling film support tube, 13A-falling film Outer tube of support tube, 13B-outer tube of falling film support tube, 14-support wire, 15-vacuum degassing port, 16-flange connecting tower body and head, 17 heat medium outlet/inlet, 18-drainage tube, 19-heat medium inlet/outlet, 20-feed pipe.

Detailed ways

The utility model will be further described below in conjunction with specific embodiments.

As shown in Figure 1, the falling film melting polycondensation reactor between tubes of the present utility model comprises a tower body 6, a head 1 connected to the upper end of the tower body 6 and a bottom shell 9 connected to the lower end of the tower body, and the head 1 is formed by the first A heat medium chamber 2, a second heat medium chamber 3 and a material chamber 4 are composed, the first heat medium chamber 2 has a reactor heat medium inlet/outlet 17, and the second heat medium chamber has a reactor heat medium outlet/inlet 17 , The bottom plate of the material chamber 4 is the material distribution plate 4A.

There is a feed pipe 20 on the top of the head, and several guide pipes 18 are connected under the feed pipe 20 , and the guide pipes 18 pass through the second heat medium chamber 3 and communicate with the material chamber 4 .

Falling film support tubes 13 arranged in rows on the distribution plate 4A pass through, and the falling film support tubes 13 are casing structures. Pipe 13A communicates with the second heat medium chamber 3. During work, heat medium can flow in from the reactor heat medium inlet 19 on the first heat medium chamber 2, enter the inner pipe 13B of the falling film support tube, and then flow from the falling film support tube. The gap between the outer tube 13A and the inner tube 13B of the falling film support tube flows out to the second heat medium chamber 3, and flows through the reactor heat medium outlet 17 on the second heat medium chamber 3 to the outside for heating or cooling cycle operation.

The falling film support tubes 13 are arranged in rows, each row has at least two, the tube spacing (L) between two adjacent falling film support tubes 13 in the same row is 4~60 mm, and the diameter of the falling film support tubes 13 is 4~100 mm. mm.

The distribution plate 4A is provided with film distribution holes 4A1 which belong to each falling film support tube 13, and the film distribution hole 4A1 to which each falling film support tube 13 belongs is at the point where the falling film support tube 13 faces two adjacent falling film support tubes in the same row. Support both sides of the tube.

Preferably, as shown in FIG. 1 , the outer tube 13A of the falling film support tube can be a circular tube with a constant diameter.

Preferably, as shown in FIG. 2 , the outer tube 13A of the falling film support tube can also be a multi-segment connected circular tube. In the direction of the falling film flow, the diameter of the segmented circular tube becomes smaller from top to bottom.

As preferably, the number, size, shape and relative position of the film cloth holes to which each falling film support tube 13 belongs are completely consistent with other falling film support tubes, but the falling film at the outermost end of each row The support tube 13 is an exception, and the film distribution hole 4A1 is not provided on its outer side, as shown in schematic diagram 4; the minimum distance between the inner wall of the film distribution hole 4A1 to which each falling film support tube 13 belongs and the outer wall of the falling film support tube 13 is less than 5mm. The film holes belonging to two adjacent falling film support pipes are not connected;

As a preference, the material flows in from the feed pipe 20 at the top of the head 1, and a number of equally spaced guide tubes 18 are connected below the feed tube 20. The material reaches the material chamber 4 at the same distance through different guide pipes 18, and the material chamber 4 The melt pressure is the same everywhere; the material flows out from the film holes 4A1 on both sides of the falling film support tube 13, and is connected between two adjacent falling film support tubes 13 in the same row to form a film sheet and carry out the tube downward. falling film flow.

Further, the outer tube 13A of the falling film support tube is a round tube or a multi-segment connected round tube, and the diameter of the multi-segment connected round tube becomes smaller from top to bottom.

As a further improvement of the utility model, the minimum distance between the falling film support tubes arranged in rows and the adjacent row of falling film support tubes is greater than 20 mm.

Preferably, there is a transverse support wire 14 connected between two adjacent falling film support tubes 13 in the same row, and the length of the support wire 14 is equal to the tube spacing between two adjacent falling film support tubes 13 in the same row.

Fig. 3 a and Fig. 3 b are respectively two kinds of examples of the geometrical layout of the film distribution holes 4A1 belonging to each falling film support tube 13 on the distribution plate 4A, but are not limited thereto, the shape of the film distribution holes 4A1 can be circular arc, Triangles, polygons, etc. are not particularly limited.

As preferably, as shown in Figure 3 a, the film cloth hole 4A1 that each falling film support tube 13 belongs to is distributed symmetrically on both sides of the falling film support tube 13, and the film cloth hole 4A1 that belongs to one side of each falling film support tube 13 is 2 One, these two film cloth holes are symmetrically distributed with the axis line of the falling film support pipe 13 in the same row.

As preferably, as shown in Figure 3 b, the film distribution holes 4A1 belonging to each falling film support tube 13 are distributed symmetrically on both sides of the falling film support tube 13, and the film distribution holes 4A1 belonging to one side of each falling film support tube 13 are 1 One, on the line connecting the axes of the same row of falling film support tubes 13.

As preferably, as shown in Figure 3a and Figure 3b, the film cloth hole 4A1 that falling film support pipe 13 belongs to is close to 13 tube walls of falling film support pipe, and the film cloth hole 4A1 that two adjacent falling film support pipes 13 belong to does not connected.

As preferably, the cross-sectional size of the cloth film hole 4A1 in the film thickness direction of the distribution plate 4A can remain unchanged, such as a column, and can also be changed, such as a cone, without special restrictions; The minimum cross-sectional area available for high-viscosity fluid flow in the direction is the effective cross-sectional area, and the effective cross-sectional area of the membrane hole 4A1 belonging to one side of the falling film support tube 13 is 1-200 mm ² ,

The tower body 6 is installed vertically, the tower body 6 is connected with the upper end head 1 by the head flange fastener 16, the tower body 6 is connected with the bottom shell 9 by the bottom shell flange fastener 7, and the upper end of the tower body 6 A vacuum degassing port 15 is provided for removing volatile small molecular compounds. There is a tower body jacket 5 on the tower body 6. The upper end and the lower end of the tower body jacket 5 are respectively provided with tower body jacket heat medium inlet/outlet 5A and Tower body jacket heat medium outlet/inlet 5B.

Preferably, the bottom shell 9 is conical, and the bottom shell 9 is equipped with a bottom shell jacket 8, and the upper end and the lower end of the bottom shell jacket 8 are respectively provided with a bottom shell jacket heat medium inlet/outlet 8A and a bottom shell jacket The heat medium outlet/inlet 8B, the bottom shell 9 is equipped with an agitator 12, after the material leaves the falling film support tube 13, the agitator 12 further stirs and homogenizes the reaction, the paddle structure agitator in the schematic diagram 1 of the utility model is only used as A specific implementation is for illustration, but the agitator of the present invention is not limited thereto, and agitators with frame, anchor, and ribbon structures can also be used.

Preferably, a screw 10 is installed at the bottom of the bottom shell 9 for discharging materials, and a material outlet 11 is located at the bottom of the bottom shell 9, and the material is stirred and homogenized by the agitator 12 and then transported to the material outlet 11 by the screw 10 for discharge.

Below, the utility model is described in more detail through the following examples.

Example 1

High-molecular-weight PET is produced from polyethylene terephthalate (PET) melt with an intrinsic viscosity of 0.65 dL/g and a molecular weight distribution index of 1.65. The melt polycondensation reactor is shown in schematic diagram 1, and the distribution plate 4A has Falling film support tubes 13 arranged in rows pass through, and each row has 5 to 7 falling film support tubes 13. The falling film support tubes 13 are circular tubes with constant diameter, and their outer diameter is 20 mm; The tube spacing between the two falling film support tubes is 20 mm; each falling film support tube 13 has a circular film distribution hole 4A1 on one side, and the shape and distribution of the film distribution hole 4A1 are shown in schematic diagram 3b. The cross-sectional area is 40 mm ² ; the film cloth holes 4A1 belonging to each falling film support tube 13 on the distribution plate 4A are distributed on the left and right sides and are symmetrically distributed close to its outer wall, and the falling film support tubes 13 at both ends of each row There is no film hole 4A1, as shown in schematic diagram 4; using the above-mentioned falling film melt polycondensation reactor for PET melt polycondensation reaction, the intrinsic viscosity of the product can be obtained as 1.07 dL/g, and the molecular weight distribution index is 1.54.

Example 2

The outer tube 13A of the falling film support tube used in this embodiment is a circular tube connected in three sections. As shown in schematic diagram 2, in the direction of falling film flow, the diameter of the segmented circular tube becomes smaller from top to bottom. The pipe diameters of the section pipes are respectively 26 mm, 20 mm and 16 mm, and the rest are the same as in Example 1; the falling film melt polycondensation reactor described above is used to carry out the PET melt polycondensation reaction, and the intrinsic viscosity of the product is 1.09 dL/g, and the molecular weight distribution Index 1.52.

Comparative example 1

In this comparative example, the falling film support tube 13 is adopted as a circular tube with constant diameter, and the falling film support tube 13 is not arranged in a row, and the film cloth hole 4A1 of the concentric ring seam structure is used to distribute the film to form the falling film flow outside the pipe. The effective film-forming cross-sectional area of the film cloth hole 4A1 to which each falling film supporting tube 13 belongs is 80 mm ² , the structure of the film cloth hole 4A1 is shown in schematic diagram 5, and the rest are the same as in Example 1, and the above-mentioned falling film melting polycondensation is adopted The melt polycondensation reaction of PET is carried out in the reactor, and the intrinsic viscosity of the obtained product is 0.86dL/g, and the molecular weight distribution index is 1.67.

Comparative example 2

In this comparative example, the falling film support tube 13 is a circular tube with a constant diameter, arranged in rows, and the film cloth hole 4A1 adopts a slit film structure that communicates between the pipes, as shown in schematic diagram 6, two adjacent two in the same row The slits between the root falling film support tubes 13 are connected, and the area of the slit-shaped film cloth hole 4A1 between each tube is 80 mm ² , the material flows out from the slits between the tubes, and the rest are the same as in Embodiment 1, and the above-mentioned The melt polycondensation reaction of PET was carried out in a falling film melt polycondensation reactor, and the intrinsic viscosity of the obtained product was 0.94 dL/g, and the molecular weight distribution index was 1.59.

Comparing Examples and Comparative Examples as can be seen, for the falling film melt polycondensation reactor (comparative example 1) outside the tube of the concentric annular seam cloth film, the outer melt coating of the tube is not complete, and the melt film thickness of the falling film flow is not enough. Average, the residence time of melt falling film is short, the increase of intrinsic viscosity of PET after reaction is limited, and the molecular weight distribution of product is obviously wider; Falling film between tubes can be realized under certain conditions, and the continuity or uniformity of the falling film flow between tubes is relatively poor. The intrinsic viscosity of the product obtained in the experiment can only be used to prepare ordinary polyester industrial yarn, and the intrinsic viscosity of the product is also wide; However, the structure design of the reactor of the utility model is reasonable, and the distribution of film holes on the falling film support tube and the distribution plate is ingenious, which can give full play to the linkage and cooperation between the film cloth and the falling film structure, and smoothly realize the uniform falling film flow between the tubes. Realize efficient preparation of polyester materials for high-performance industrial yarns with high molecular weight and narrow distribution.

The experimental result comparison of table 1 embodiment and comparative example:

project Falling film support and film distribution method Experimental phenomena Intrinsic viscosity (dL/g) molecular weight distribution index Example 1 The falling film support tubes are arranged in rows, and the falling film support tubes are circular tubes with constant diameter. The film is arranged on both sides of the falling film support tube, and the effective area of the membrane holes on one side is 40 mm ² Continuous and uniform falling film flow between tubes 1.07 1.54 Example 2 The falling film support tubes are arranged in rows, and the falling film support tubes are multi-section connected circular tubes. The diameter of the tubes becomes smaller from top to bottom. The film is arranged on both sides of the falling film support tubes, and the effective area of the film holes on one side is 40 mm ² Continuous and uniform falling film flow between tubes 1.09 1.52 Comparative example 1 The falling film support tube is a circular tube with constant diameter, the falling film support tube is not arranged in a row, and the concentric ring holes are slit with a film, and the ring seam area is 80 mm ² Falling film flow outside the tube, partial coating, uneven film thickness 0.85 1.68 Comparative example 2 The falling film support tubes arranged in rows are circular tubes with constant diameter, and the slits connected between the tubes are arranged with membranes, and the slit area is 80 mm ² Falling film flow between tubes 0.94 1.59

The above is only a specific embodiment of the utility model, but the structural features of the utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the utility model are covered by the utility model. In the new protection scope.

Claims (10)

1. a kind of falling liquid film melt polycondensation reaction device, the end socket (1) and and tower body being connected including tower body (6), with tower body (6) upper end (6) bottom case (9) that lower end is connected, reactor is equipped with feed pipe (20), material outlet (11) and vacuum outgas mouth (15), special Sign is：

The end socket (1) includes the first heating agent room (2), the second heating agent room (3) and supplies room (4), has on the first heating agent room (2) anti- Device heating agent entry/exit mouth (19) is answered, there is reactor heating agent in/out mouth (17), the lower plate of supplies room (4) on the second heating agent room (3) For material distribution plate (4A)；

The feed pipe (20) connects with supplies room (4)；

The falling liquid film support tube (13) for having arranged in rows on the distribution plate (4A) passes through, each to drain into rare two, adjacent with arranging The tube spacing (L) of two falling liquid film support tubes (13) is 4~60mm, falling liquid film support tube (13) a diameter of 4~100mm；

The distribution plate (4A) belongs to each falling liquid film support tube (13), every falling liquid film support tube equipped with cloth fenestra (4A1) (13) the cloth fenestra (4A1) belonging to is in the falling liquid film support tube (13) towards the both sides of the adjacent two falling liquid film support tubes of same row, divides The cloth fenestra of symbolic animal of the birth year two falling liquid film support tubes of neighbour does not connect；

The falling liquid film support tube (13) is sleeve structure, and the inner tube (13B) of falling liquid film support tube is communicated with the first heating agent room (2), is dropped The outer tube (13A) of film support tube is communicated with the second heating agent room (3).

2. a kind of falling liquid film melt polycondensation reaction device as described in claim 1, it is characterised in that：The outer tube of falling liquid film support tube (13A) is the pipe that one section of pipe or multistage are connected, and the diameter for the pipe that multistage is connected becomes smaller from top to bottom.

3. a kind of falling liquid film melt polycondensation reaction device as described in claim 1, it is characterised in that：It is supported with adjacent two falling liquid films are arranged There is lateral supporting wire (14) connection between pipe (13).

4. a kind of falling liquid film melt polycondensation reaction device as described in claim 1, it is characterised in that：Every falling liquid film support tube (13) institute Belong to the quantity of cloth fenestra, size, shape and its completely the same with the relative position of the falling liquid film support tube and other falling liquid film support tubes, But falling liquid film support tube (13) exception of each row's outermost end, outside does not set cloth fenestra (4A1)；Every falling liquid film support tube (13) institute Minimum range between cloth fenestra (4A1) inner wall of category and falling liquid film support tube (13) outer wall is less than 5mm, adheres to adjacent two drops separately The cloth fenestra of film support tube does not connect.

5. a kind of falling liquid film melt polycondensation reaction device as claimed in claim 4, it is characterised in that：Belonging to falling liquid film support tube (13) Cloth fenestra (4A1) is tightly attached to falling liquid film support tube (13) tube wall, and the cloth fenestra (4A1) belonging to adjacent two falling liquid film support tubes (13) is no Connection.

6. a kind of falling liquid film melt polycondensation reaction device as claimed in claim 4, it is characterised in that：Every falling liquid film support tube (13) one Cloth fenestra (4A1) belonging to side can be one or more, and the cloth fenestra (4A1) belonging to falling liquid film support tube (13) side is one When, cloth fenestra (4A1) is on the line in the axle center of same row's falling liquid film support tube (13)；Cloth belonging to falling liquid film support tube (13) side When fenestra (4A1) is multiple, multiple cloth fenestras (4A1) are symmetrical with the axial connecting line of same row's falling liquid film support tube (13).

7. a kind of falling liquid film melt polycondensation reaction device as described in claim 1 or 4, it is characterised in that：Every falling liquid film support tube (13) cloth fenestra (4A1) effective cross section product of side is 1~200mm²。

8. a kind of falling liquid film melt polycondensation reaction device as described in claim 1, it is characterised in that：Tower body (6) right angle setting, Tower body (6) is connect with the end socket (1) of upper end by flange fastener (16), and the bottom case (9) of tower body (6) and lower section is by flange fastener (7) connect, tower body (6) upper end is equipped with vacuum outgas mouth (15), there is tower body chuck (5) on tower body (6), tower body chuck (5) it is upper End and lower end are respectively equipped with tower body chuck heating agent entry/exit mouth (5A) and tower body chuck heating agent in/out mouth (5B).

9. a kind of falling liquid film melt polycondensation reaction device as described in claim 1, it is characterised in that：The bottom case (9) be taper, bottom The outside of shell (9) is equipped with bottom case chuck (8), and the top and bottom of bottom case chuck (8) are respectively equipped with bottom case chuck heating agent entry/exit mouth (8A) and bottom case chuck heating agent in/out mouth (8B), bottom case (9) is internal to be equipped with blender (12).

10. a kind of falling liquid film melt polycondensation reaction device as described in claim 1, it is characterised in that：Bottom case (9) bottom is provided with spiral shell Bar (10) is for discharging.