CN205815656U - Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb - Google Patents
Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb Download PDFInfo
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- CN205815656U CN205815656U CN201620413490.2U CN201620413490U CN205815656U CN 205815656 U CN205815656 U CN 205815656U CN 201620413490 U CN201620413490 U CN 201620413490U CN 205815656 U CN205815656 U CN 205815656U
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Abstract
The open one of this utility model becomes falling liquid film melt polycondensation reaction device between comb, it includes upright shell, the heating agent casing of upper end and the drain pan of connected body feed tank, U-tube and lower end, agitator etc., U-tube vertical hanging, in a row arrangement, uniformly across cloth lamina membranacea hole, U-tube port communicates with heating agent casing and flows for heating agent.This reactor can make melt form a kind of waterfall type film evaporation device between U-tube in a row and carry out melt polycondensation reaction, melt flows resistance is little, without dead band, film forming area is big, Surface Renewal is fast, reaction temperature is uniform, it is adaptable to the production of the polymer such as polyethylene terephthalate.
Description
Technical field
This utility model relates to the film forming melt polycondensation reaction equipment in polymer production.
Background technology
The implementation of polycondensation reaction mainly has melt polycondensation, solid phase polycondensation, solution polycondensation etc., and wherein melt polycondensation is because of it
Reaction efficiency is high, flow process is short, energy-conserving and environment-protective and meet the advantages such as flexibility large-scale production and be widely adopted, as poly-to benzene
Naphthalate (PET), PTT (PTT), polybutylene terephthalate (PBT) (PBT), poly-naphthalene
Naphthalate (PEN), polyamide (PA) and Merlon (PC) etc. are all prepared by melt polycondensation reaction.Melt polycondensation
During method produces this kind of material, along with the carrying out of reaction, reaction system viscosity sharply increases, and the little molecule of generation is got rid of more to come
The most difficult, mass transfer becomes the governing factor of process, therefore uses and is provided that big mass transfer specific surface area and strengthens bath surface more
New high-quality polycondensation reaction equipment is the key implementing efficient melt polycondensation.
The presently disclosed falling liquid film polycondensation reactor producing the glutinous material of height mainly has bar formula, grated plate type, tube wall type etc. molten
Melting polycondensation reactor, falling film reactor is dependent on gravity makes melt flow at vertical inner member surface filming in the form of a film.
Compared to tradition horizontal reactor, can improve film forming efficiency and substantially reduce the material reaction time, energy consumption substantially reduces.Especially
It is that extratubal falling film reactor can make material only become membrane flow by gravity outside pipe, it is provided that suitable when preparation height glutinous material viscosity
The time of staying enable material fully to react, but wall-attachment film evaporation device can make melt films because of the speed of inside and outside tunic completely
Difference causes outer layer liquid film flow velocity fast, and inner layer film is relatively slow, causes partial material to invest for a long time and occurs on reactor inner member
Degraded, jaundice, affect final products quality, and the bar formula free falling-film that falls then can make the flow velocity of melt films free fall too fast and stop
Staying the time too short, and melt face during falling liquid film shrinks substantially, film forming efficiency has much room for improvement.
Summary of the invention
The purpose of this utility model is to provide falling liquid film melt polycondensation reaction device between a kind of one-tenth comb, can effectively be expanded into face
Long-pending, improve melt film forming efficiency and the Surface Renewal of melt, strengthen melt flows and become the homogeneous of film uniformity and the time of staying
Property, raising polycondensation reaction efficiency and height stick the product quality of material.To this end, this utility model is by the following technical solutions:
Becoming falling liquid film melt polycondensation reaction device between comb, described reactor includes upright shell, it is characterised in that described reaction
Device also includes the U-shaped heat-exchange tube of arranged in rows, is arranged on the material material feeding box on upright shell top, the base plate of material material feeding box
For cloth lamina membranacea, the straight tube of the U-shaped heat-exchange tube of arranged in rows passes cloth lamina membranacea, and cloth lamina membranacea has film distribution structure, film distribution structure bag
Including the cloth film slit in region between corresponding straight tube, the straight tube adjacent tubes spacing of the U-shaped heat-exchange tube of arranged in rows with the ratio of caliber is
0.1 ~ 20, make material melt when flowing downward, between the straight tube of the U-shaped heat-exchange tube of arranged in rows, be connected to curtain, at straight tube
Between form waterfall shape film evaporation device, and carry out melt polycondensation reaction.
On the basis of using technique scheme, the present invention also can use technical scheme further below simultaneously, or
These solution pool are used:
Can be provided with between the adjacent straight tube pipe between two straight tube pipes of U-shaped heat-exchange tube and with row's U-shaped heat-exchange tube of two adjacent groups
Or it is not provided with connecting filament between horizontal pipe, between the pipe of two straight tubes, connecting filament radical is 0 ~ 1000, a diameter of 0.1 mm ~ 10
Mm, between pipe connecting filament radical be the tube pitch of 0 be 0.1 ~ 10 with the ratio of caliber, between pipe, connecting filament radical is the pipe of 1 ~ 1000
Spacing is 0.1 ~ 20 with the ratio of caliber.
The U-shaped heat-exchange tube of arranged in rows passes cloth lamina membranacea right angle setting, and cloth lamina membranacea is provided with multiple rows of film distribution structure, cloth film
Structure include for and U-shaped heat-exchange tube straight tube to form the cloth film in region between the cloth fenestra in falling liquid film gap and corresponding straight tube narrow
Stitching, and slit connects with hole, the space between cloth fenestra hole wall and straight tube is for material melt cloth film outside straight tube.
Upright shell is arranged over heating agent at material material feeding box and flows out casing and heating agent inflow casing, and heating agent flows into casing and sets
Responding device Heating medium, heating agent flows out and responds the outlet of device heating agent, U-shaped heat-exchange tube one end of described arranged in rows on casing
Flowing into casing with heating agent to communicate, the other end flows out casing with heating agent and communicates；Melt material inlet pipe passes to material material feeding box；Vertical shell
Body top is provided with vacuum pumping opening, is provided with agitator in drain pan, and its power is incoming by bottom, is provided with material outlet bottom drain pan.
The U-shaped heat-exchange tube right angle setting of arranged in rows, lower end is unsettled, is in same with the axis arranging U-shaped heat-exchange tube
Plane.
The straight tube of U-shaped heat-exchange tube can be the coaxial straight tube of reducing, and the reducing trend of the coaxial straight tube of described reducing is from up to
Under, caliber diminishes, and U-shaped heat-exchange tube external diameter is 1 ~ 50 mm.
Reactor has heat transfer system and heat-insulation system, and heat transfer system includes that heating agent flows into casing, heating agent flows out casing and U-shaped
Heat-exchange tube and the circulation path of composition thereof, heating agent flows into casing and heating agent flows out and is respectively equipped with reactor Heating medium on casing
Export with reactor heating agent；Heat-insulation system includes housing chuck and the drain pan folder that upright shell and drain pan and periphery thereof be respectively provided with
Set, the upper and lower of housing chuck is respectively equipped with housing chuck Heating medium and the outlet of housing chuck heating agent, drain pan chuck
Upper and lower is respectively equipped with drain pan chuck Heating medium and the outlet of drain pan chuck heating agent, heat transfer system and the heating agent of heat-insulation system
Medium is passed to outside through Posterior circle operation is heated or cooled.
The present invention is applicable to polyethylene terephthalate (PET), PTT (PTT), poly-right
Benzene dicarboxylic acid butanediol ester (PBT), PEN (PEN), polyamide (PA) and Merlon (PC) etc. are polymerized
The melt polycondensation reaction of thing.
This utility model utilizes polycondensation reaction material melt to have what viscosity in viscosity height and course of reaction constantly increased
Feature, finds to realize film evaporation device between the pipe of " waterfall " shape the most in the reactor, can remain bigger all the time
Film forming area, melt uniform film thickness, flow velocity reaches unanimity, and face keeps laminar flow to move under gravity forces, thus ensures
Polymer molecular weight narrowly distributing, can realize the product that continuous production can be excellent and stable, and unit volume reactor
Production efficiency is greatly increased.This utility model finds the U-shaped heat-exchange tube melt polycondensation as falling liquid film support member of in a row arrangement
Reactor be suitable for very much this reaction method reactor, further, supporting wire between the pipe of adjacent two pipes, its energy are set
For falling liquid film between the pipe of " waterfall " shape, strengthen the dispersion of melt and mix, improve the Surface Renewal frequency of melt films, again can simultaneously
The stability of waterfall shape is played holding effect.Utilize this utility model to carry out polycondensation reaction, have flow into membrane area big,
Surface Renewal speed is fast, the time of staying is homogeneous controlled, and the series of advantages such as energy consumption is low, easy cleaning, can realize Mass and heat transfer
The high-effect melt polycondensation coupled with chemical reaction.
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 cloth lamina membranacea pore cell schematic diagram.
Fig. 5 a is one of straight tube geometric layout schematic diagram passing cloth lamina membranacea of multiple rows of U-tube.
Fig. 5 b be multiple rows of U-tube straight tube through cloth lamina membranacea geometric layout schematic diagram two.
Fig. 5 c be multiple rows of U-tube straight tube through cloth lamina membranacea geometric layout schematic diagram three.
Parts, position and numbering in figure: reactor Heating medium 1, feed pipe 2, heating agent flows to casing 3, heating agent stream
Going out casing 4, heating agent flows out box cover plate 41, and heating agent flows out casing lower shoe 42, material material feeding box 5, cloth lamina membranacea 51, cloth fenestra
Gap 511, housing chuck Heating medium 6, upright shell 7, housing chuck 8, drain pan flange 9, drain pan bolt 10, drain pan chuck heating agent
Import 11, drain pan 12, drain pan chuck 13, material outlet 14, drain pan chuck heating agent outlet 15, agitator 16, housing chuck heating agent
Outlet 17, U-tube 18, connecting filament 181 between pipe, vacuum pumping opening 19, shell flange 20, casing bolts 21, reactor heating agent goes out
Mouth 22, melt material inlet pipe 23.
Detailed description of the invention
Embodiment 1, referring to the drawings 1,4,5a, 5b, 5c.
In the present embodiment, U heat exchange 18(hereinafter referred to as U-tube, it includes the straight tube of both sides and connects in bottom
Connect the bend pipe of both sides straight tube) straight tube use the constant straight tube of caliber.
Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb that the present embodiment is provided, as it is shown in figure 1, it includes vertical shell
Body 7, is connected to the material material feeding box of upright shell 7 upper end and the drain pan 12 of lower end, and material material feeding box 5 is arranged over heating agent and flows out
Casing 4, flows out at heating agent and is provided with again heating agent inflow casing 3 on casing 4, and heating agent inflow casing 3 is provided with reactor heating agent and enters
Mouth 1, heating agent flows out and responds device heating agent outlet 22 on casing 4, U-tube 18 one end of arranged in rows and heating agent inflow casing 3 phase
Logical, the other end flows out casing 4 with heating agent and communicates, and melt material inlet pipe 23 flows out casing 4 from heating agent and heating agent flows into casing 3 and wears
Cross, pass to material material feeding box 5；The base plate of material material feeding box 5 is cloth lamina membranacea 51, and cloth lamina membranacea 51 has film distribution structure, upright shell 7
Top is provided with vacuum pumping opening 19, is provided with agitator 16 below U-tube 18, and its power is incoming by bottom, sets bottom drain pan 12
There is material outlet 14.
In the U-shaped heat-exchange tube 18 of arranged in rows, the straight tube with the U-shaped heat-exchange tube 18 of row is all proximity association, U-shaped
The straight tube of heat-exchange tube 18 plays the effect of falling liquid film support member between pipe, and its tube pitch makes material melt by film distribution structure to dirty
Time dynamic, between the straight tube of the U-shaped heat-exchange tube of arranged in rows, it is connected to curtain, between pipe, forms waterfall shape film evaporation device, and carry out
Melt polycondensation reaction.Small molecule by-product is from the two sides devolatilization of described waterfall shape falling liquid film, and then is discharged by vacuum pumping opening
19。
Described U-tube 18 right angle setting, lower end is unsettled, the neat arranged in rows of many single u-shaped pipe 18, with row's U-tube 18
Axis is in same plane, is separated by between row and row with equidistant keeping parallelism.
As preferably, two straight tube tube pitch of U-tube 18 and the adjacent straight tube tube pitch phase of adjacent two U-tube 18
Deng, tube pitch is 0.1 ~ 20 from the ratio with the pipe external diameter of U-tube.
As preferably, the straight tube pipe range of U-tube 18 is 0.5 ~ 30 m, and external diameter is 1 ~ 50 mm.
Can be provided with between transverse pipe between 18 liang of straight tubes of vertically arranged U-tube and between the adjacent straight tube of adjacent two U-tube
Connecting filament 181, between pipe, connecting filament length is equal to the vertical dimension of two pipes, as preferably, connecting filament root between the pipe of adjacent two pipes
Number is 1 ~ 1000, a diameter of 0.1 mm ~ 10 mm.
In a row the U-tube 18 of arrangement is through cloth lamina membranacea 51 right angle setting, and cloth lamina membranacea 51 is provided with multiple rows of film distribution structure, cloth film
Structure include for and the cloth film that formed between the cloth fenestra 511 in falling liquid film gap and corresponding straight tube of U-shaped heat-exchange tube 18 straight tube narrow
Stitching 512, and slit 512 connects with hole 511, slit 512 is for making material melt films flow down with relatively thin thickness between pipe, such as figure
Shown in 4；Space between cloth fenestra hole wall and straight tube at the outer cloth film of straight tube, forms extratubal falling film flowing for material melt,
The melt material of waterfall shape film evaporation device between described straight tube is connected with the melt material of extratubal falling film, increases into the most further
Membrane area, and contribute to the one-tenth curtain stability of waterfall shape film evaporation device, and the material curtain between pipe can utilize the viscous of material in turn
Degree is formed with facilitation to extratubal falling film laminar flow.
Often arrangement membrane structure has more than one cloth membrane pores unit, and each unit includes a hole 511 and a seam
512, as preferably, hole wall is dentation, as shown in Figure 4, so that the space between the hole wall in hole 51 and straight tube is essentially slot.
As preferably, the internal ring radius (R1) of slot is identical with the pipe end radius of U-tube straight tube, slot outer shroud radius (R2) and internal ring half
The difference in footpath (R1) is 0.1 ~ 10 mm, and the width (L1) of slit 512 is 0.1 ~ 10 mm, and length (L2) is 1 ~ 200 mm.
The summit, axis of four straight tubes of neighbouring two groups of U-tube 18 of adjacent two rows is connected to parallelogram, Fig. 5 a,
5b, 5c are respectively the straight tube several examples through cloth lamina membranacea geometric layout of multiple rows of U-tube 18.
As preferably, the U-tube 18 of arranged in rows vertical dimension between row and row is 10 ~ 200 mm, and U-tube is in a row
Overall right angle setting.
Reactor is provided with heat transfer system, flows into casing 3 including heating agent, heating agent flows out casing 4 and U-tube 18 and composition
It is respectively equipped with reactor Heating medium 1 on circulation path, heating agent inflow casing 3 and heating agent outflow casing 4 and reactor heating agent goes out
Mouth 22.
Reactor is provided with heat-insulation system, housing chuck 8 He being respectively provided with including upright shell 7 and drain pan 12 and periphery thereof
Drain pan chuck 13, the upper and lower of housing chuck 8 is respectively equipped with housing chuck Heating medium 6 and the outlet of housing chuck heating agent
17, the upper and lower of drain pan chuck 13 is respectively equipped with drain pan chuck Heating medium 11 and drain pan chuck heating agent outlet 15.
The thermal medium of heat transfer system and heat-insulation system is passed to outside through Posterior circle operation is heated or cooled.
Reactor top and the upright shell 7 that casing 3, heating agent outflow casing 4 and material material feeding box 5 form is flowed into by heating agent
Being connected by shell flange 20 and casing bolts 21, upright shell 7 is connected by drain pan flange 9 and drain pan bolt 10 with drain pan 12,
Readily accessible maintenance and installation.
The melt polycondensation process using above-mentioned polycondensation reactor is:
During reactor work, heating agent flows to from U type pipe Single port, then flows out from another port, then flows out to polycondensation anti-
Answer device outside through Posterior circle operation is heated or cooled.
Material inlet is positioned at heating agent and flows into directly over casing crown center, and pre-polymer melt is constantly injected from material inlet,
The heating agent that wore long flows into the feed pipe of casing and heating agent outflow casing and flows into material material feeding box.
Melt enters the U-tube district of arranged in rows, uniform cloth film outside U-tube straight tube after the hole on cloth lamina membranacea distributes
Forming falling liquid film, form " waterfall " shape film evaporation device, carry out melt polycondensation reaction between straight tube pipe, between pipe, melt is through equally spaced
Connecting filament and maintain certain thickness to flow, reaction generate little molecule from vacuum pumping opening extract out.
Melt after landing, finally converges to bottom polycondensation reactor between U-tube pipe, stirs further instead through agitator
And material should be homogenized, complete reacted melt and discharge from the material outlet of reactor bottom.
Embodiment 2, referring to the drawings 2,4,5a, 5b, 5c.
In the present embodiment, the straight tube of U-tube 18 uses the coaxial straight tube of reducing of connection.
The straight tube of U-tube 18 with equidistant interior reducing, becomes diameter not once logical straight of continuous phase below cloth lamina membranacea 51
Pipe, the most coaxially, to U-tube 18 bottom below cloth lamina membranacea 51, caliber is gradually reduced.
In the U-tube of reducing, the variable diameter straight tube pipe that between each section of U-tube straight tube, the length of connecting filament is corresponding with it
Spacing keeps equal.
Other parts and the implementation of the present embodiment are same as in Example 1, and in fig. 2, drawing reference numeral is identical with Fig. 1
Represent identical implication.
Case study on implementation 3, referring to the drawings 3,4,5a, 5b, 5c.
In the present embodiment, U-tube 18 straight part is the straight tube that caliber is constant, between 18 liang of straight tubes of U-tube and with row
All without connecting filament between adjacent two straight tubes of adjacent U-tube 18.
As preferably, U-tube 18 tube pitch is 0.1 ~ 10 from the ratio with caliber.
Other parts and the implementation of the present embodiment are same as in Example 1, and in figure 3, drawing reference numeral is identical with Fig. 1
Represent identical implication.
The foregoing is only the specific embodiment of the present invention, but the architectural feature of the present invention is not limited thereto, Ren Heben
The technical staff in field is in the field of the invention, and change or the modification made all are contained among protection scope of the present invention.
Claims (7)
1. becoming a falling liquid film melt polycondensation reaction device between comb, described reactor includes upright shell (7), it is characterised in that described
Reactor also includes the U-shaped heat-exchange tube (18) of arranged in rows, is arranged on the material material feeding box (5) on upright shell (7) top, thing
The base plate of material material feeding box (5) is cloth lamina membranacea (51), and the straight tube of the U-shaped heat-exchange tube (18) of arranged in rows passes cloth lamina membranacea (51),
Cloth lamina membranacea (51) has film distribution structure, and film distribution structure includes cloth film slit (512) in region, the U of arranged in rows between corresponding straight tube
The straight tube adjacent tubes spacing of type heat-exchange tube (18) is 0.1 ~ 20 with the ratio of caliber, makes material melt when flowing downward, is becoming
It is connected to curtain between the straight tube of the U-shaped heat-exchange tube of row's arrangement, between straight tube, forms waterfall shape film evaporation device, and carry out melt polycondensation
Reaction.
Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb the most according to claim 1, it is characterised in that: U-shaped heat exchange
Horizontal stroke can be provided with or without between the adjacent straight tube pipe between two straight tube pipes of pipe (18) and with row's U-shaped heat-exchange tube of two adjacent groups (18)
To pipe between connecting filament (181), between the pipe of two straight tubes, connecting filament radical is 0 ~ 1000, a diameter of 0.1 mm ~ 10 mm, pipe
Between connecting filament radical be the tube pitch of 0 be 0.1 ~ 10 with the ratio of caliber, between pipe, connecting filament radical is the tube pitch of 1 ~ 1000
It is 0.1 ~ 20 with the ratio of caliber.
Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb the most according to claim 1, it is characterised in that: arranged in rows
U-shaped heat-exchange tube (18) passes cloth lamina membranacea (51) right angle setting, and cloth lamina membranacea (51) is provided with multiple rows of film distribution structure, film distribution structure bag
Include for and U-shaped heat-exchange tube (18) straight tube form the cloth film in region between the cloth fenestra (511) in falling liquid film gap and corresponding straight tube
Slit (512), and slit connects with hole, the space between cloth fenestra hole wall and straight tube for material melt at the outer cloth of straight tube
Film.
4. falling liquid film melt polycondensation reaction device between a kind of one-tenth comb as claimed in claim 1, it is characterised in that upright shell (7) exists
Material material feeding box (5) is arranged over heating agent and flows out casing (4) and heating agent inflow casing (3), and heating agent flows into casing (3) and is provided with reaction
Device Heating medium (1), heating agent flows out and responds device heating agent outlet (22), the U-shaped heat-exchange tube of described arranged in rows on casing (4)
(18) one end communicates with heating agent inflow casing (3), and the other end flows out casing (4) with heating agent and communicates；Melt material inlet pipe passes to thing
Material material feeding box (5)；Upright shell (7) top is provided with vacuum pumping opening (19), and drain pan (12) bottom is provided with material outlet (14).
Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb the most according to claim 1, it is characterised in that: arranged in rows
U-shaped heat-exchange tube (18) right angle setting, lower end is unsettled, is in same plane with the axis arranging U-shaped heat-exchange tube (18).
Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb the most according to claim 1, it is characterised in that: U-shaped heat exchange
The straight tube of pipe (18) can be the coaxial straight tube of reducing, and the reducing trend of the coaxial straight tube of described reducing is that caliber diminishes from top to bottom, U
Type heat-exchange tube (18) external diameter is 1 ~ 50 mm.
Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb the most according to claim 1, it is characterised in that: reactor has biography
Hot systems and heat-insulation system, heat transfer system includes that heating agent flows into casing (3), heating agent flows out casing (4) and U-shaped heat-exchange tube (18)
And the circulation path of composition, heating agent flows into casing (3) and heating agent flows out and is respectively equipped with reactor Heating medium on casing (4)
(1) and reactor heating agent outlet (22)；Heat-insulation system includes the shell that upright shell (7) and drain pan (12) and periphery thereof are respectively provided with
Body chuck (8) and drain pan chuck (13), the upper and lower of housing chuck (8) be respectively equipped with housing chuck Heating medium (6) and
Housing chuck heating agent outlet (17), the upper and lower of drain pan chuck (13) is respectively equipped with drain pan chuck Heating medium (11) and the end
Shell chuck heating agent outlet (15), the thermal medium of heat transfer system and heat-insulation system is passed to outside through Posterior circle is heated or cooled
Run.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620413490.2U CN205815656U (en) | 2016-05-09 | 2016-05-09 | Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620413490.2U CN205815656U (en) | 2016-05-09 | 2016-05-09 | Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb |
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| Publication Number | Publication Date |
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| CN205815656U true CN205815656U (en) | 2016-12-21 |
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ID=58148086
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|---|---|---|---|
| CN201620413490.2U Withdrawn - After Issue CN205815656U (en) | 2016-05-09 | 2016-05-09 | Falling liquid film melt polycondensation reaction device between a kind of one-tenth comb |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107570088A (en) * | 2017-10-10 | 2018-01-12 | 湖南安淳高新技术有限公司 | The catalyst uninstalling system and discharging method of a kind of shell-and-tube reactor |
| CN114797732A (en) * | 2022-06-02 | 2022-07-29 | 浙江安吉骏逸新材料科技有限公司 | Polycondensation vacuum reaction system for producing flame-retardant slices and production process |
-
2016
- 2016-05-09 CN CN201620413490.2U patent/CN205815656U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107570088A (en) * | 2017-10-10 | 2018-01-12 | 湖南安淳高新技术有限公司 | The catalyst uninstalling system and discharging method of a kind of shell-and-tube reactor |
| CN107570088B (en) * | 2017-10-10 | 2023-11-17 | 湖南安淳高新技术有限公司 | Catalyst unloading system and method for shell-and-tube reactor |
| CN114797732A (en) * | 2022-06-02 | 2022-07-29 | 浙江安吉骏逸新材料科技有限公司 | Polycondensation vacuum reaction system for producing flame-retardant slices and production process |
| CN114797732B (en) * | 2022-06-02 | 2024-02-06 | 浙江天诚新材料有限公司 | Polycondensation vacuum reaction system for flame-retardant slice production and production process |
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| AV01 | Patent right actively abandoned |
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