CN217189487U - Polymerization inhibition reaction device - Google Patents
Polymerization inhibition reaction device Download PDFInfo
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- CN217189487U CN217189487U CN202220371610.2U CN202220371610U CN217189487U CN 217189487 U CN217189487 U CN 217189487U CN 202220371610 U CN202220371610 U CN 202220371610U CN 217189487 U CN217189487 U CN 217189487U
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- heat exchanger
- valve
- kettle body
- circulating pipeline
- rectifying column
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model provides a hinder and gather reaction unit, includes the reation kettle body, first circulating line, second circulating line to and a plurality of material storage tank, the interior empty upper portion of the reation kettle body sets up material distributor, sets up vertical filler rectifying column that extends up on the vapour phase bin outlet of the reation kettle body, the extension end of filler rectifying column is parallelly connected through the feed inlet of first heat exchanger with a plurality of material storage tanks, and the feed inlet of each material storage tank all is equipped with first valve, set up first conveying pump on the first circulating line, the upstream end of first circulating line links to each other with the reation kettle body, and the downstream end is to material distributor feed, set up second conveying pump on the second circulating line, the upstream end of second circulating line links to each other with the reation kettle body, and the downstream end links to each other with filler rectifying column, is located filler rectifying column 3/4 high position. The utility model has simple structure and convenient operation, and can effectively solve the problem of polymerization caused by the loss of polymerization inhibitor protection of the ester exchange reaction vapor phase.
Description
Technical Field
The utility model relates to a chemical industry field, in particular to polymerization inhibition reaction unit.
Background
The vinyl ether acrylate is a new generation of active diluent for photocuring materials, printing ink and 3D printing materials. The material structure contains double bonds, ester bonds and ether bonds, so that the reaction activity is high, and the polymerization reaction is easy to occur in a reaction system to cause reaction failure. Because vinyl ether is unstable when meeting acidic substances, the preparation of vinyl ether acrylate mostly adopts an ester exchange method. Methyl acrylate or ethyl acrylate is generally used as a transesterification reagent, and methyl acrylate and ethyl acrylate are easy to polymerize in a reaction device, so that the stable operation of equipment is influenced.
In recent years, studies on a method of inhibiting polymerization by transesterification have been mainly focused on the use of a polymerization inhibitor. However, since the small-molecule raw material has a low boiling point and is easily vaporized, while the polymerization inhibitor has a high boiling point and remains in the liquid phase, the polymerization inhibitor hardly exerts its polymerization inhibiting effect, and the vapor phase is polymerized without being protected by the polymerization inhibitor.
Therefore, how to design a reaction device capable of effectively preventing the polymerization of the vapor-phase material is a problem to be solved by those skilled in the art.
Disclosure of Invention
The utility model aims at the not enough of prior art, provide a polymerization inhibitor reaction unit, its simple structure, convenient operation can effectively solve like the polymerization problem that the ester exchange reaction vapour phase produced because of the protection of disappearance polymerization inhibitor.
The technical scheme of the utility model is that: the utility model provides a hinder and gather reaction unit, includes the reation kettle body, first circulating line, second circulating line to and a plurality of material storage tank, the interior empty upper portion of the reation kettle body sets up material distributor, sets up vertical filler rectifying column that extends up on the vapour phase bin outlet of the reation kettle body, the extension end of filler rectifying column is parallelly connected through the feed inlet of first heat exchanger with a plurality of material storage tanks, and the feed inlet of each material storage tank all is equipped with first valve, set up first conveying pump on the first circulating line, the upstream end of first circulating line links to each other with the reation kettle body, and the downstream end is to material distributor feed, set up second conveying pump on the second circulating line, the upstream end of second circulating line links to each other with the reation kettle body, and the downstream end links to each other with filler rectifying column, is located filler rectifying column 3/4 high position.
The first circulation pipeline is provided with a second valve which is positioned at the downstream of the first material conveying pump, and the first circulation pipeline also comprises a second heat exchanger, wherein the second heat exchanger is connected on the first circulation pipeline in parallel, a material inlet of the second heat exchanger is provided with a third valve which is positioned at the upstream of the second valve, and a material outlet of the second heat exchanger is provided with a fourth valve which is positioned at the downstream of the second valve.
The second heat exchanger is a shell and tube heat exchanger.
And a third heat exchanger and a fifth valve are arranged on the second circulating pipeline, the third heat exchanger is a ratchet plate type heat exchanger, and the fifth valve is positioned at the downstream of the third heat exchanger.
Each material storage tank is connected with the negative pressure source in parallel, and a sixth valve is arranged between each material storage tank and the negative pressure source.
The filler rectifying column is a stainless steel wire mesh filler column.
The upstream ends of the first circulating pipeline and the second circulating pipeline are connected in parallel and then connected with the bottom of the reaction kettle body, and the parallel sections of the first circulating pipeline and the second circulating pipeline are provided with air supplementing pipes and are controlled to be opened and closed through a seventh valve.
Adopt above-mentioned technical scheme to have following beneficial effect:
1. the polymerization inhibition reaction device comprises a reaction kettle body, a first circulating pipeline, a second circulating pipeline and a plurality of material storage tanks, wherein the reaction kettle body is used for carrying out related chemical reactions, and the material storage tanks are used for collecting fractions. The reactor is characterized in that a material distributor is arranged on the inner hollow upper part of the reactor body, a vertical filler rectifying column extending upwards is arranged on a vapor phase discharge port of the reactor body, the extending end of the filler rectifying column is connected with the feed inlets of the plurality of material storage tanks in parallel through a first heat exchanger, the feed inlets of the material storage tanks are provided with first valves, namely, the temperature of the reactor body is controlled, so that light components with different boiling points are distilled out, and the light components are collected to the corresponding material storage tanks after being cooled. The first circulating pipeline is provided with a first material conveying pump, the upstream end of the first return pipe is connected with the reaction kettle body, the downstream end supplies materials to the material distributor, and the liquid phase in the reaction kettle body is uniformly sprayed in the hollow space of the reaction kettle body in a liquid drop mode and contacts with the vapor phase in the hollow space of the reaction kettle body by opening the first material conveying pump. The second circulation pipeline is provided with a second material conveying pump, the upstream end of the second circulation pipeline is connected with the reaction kettle body, the downstream end of the second circulation pipeline is connected with the packing rectification column and is positioned at the height position of 3/4 of the packing rectification column, and the second material conveying pump is started to enable the liquid phase in the reaction kettle body to flow back into the packing rectification column and contact with the light vapor phase in the packing rectification column, so that the purity of the light fraction is improved, the light vapor phase can be effectively prevented from polymerizing, and the normal operation of the reaction device is ensured.
2. The first circulating pipeline is provided with a second valve, the second valve is positioned at the downstream of the first material conveying pump, the second heat exchanger is connected with the first circulating pipeline in parallel, a material inlet of the second heat exchanger is provided with a third valve and positioned at the upstream of the second valve, a material outlet of the second heat exchanger is provided with a fourth valve and positioned at the downstream of the second valve, and the first heat exchanger and a heat exchange jacket matched with the reaction kettle body can be used for cooperating with each other according to actual requirements to control the temperature of the liquid phase in the reaction kettle body.
3. And each material storage tank is connected with the negative pressure source in parallel, and a sixth valve is arranged between each material storage tank and the negative pressure source, so that the discharge efficiency of the light fraction is improved.
4. The upper reaches end of first circulation pipeline, second circulation pipeline connect in parallel the back, link to each other with the bottom of the reation kettle body, set up the moisturizing pipe on the parallelly connected section of first circulation pipeline, second circulation pipeline, and through seventh valve control switching, after the reaction, usable moisturizing pipe fills high-pressure gas into first circulation pipeline, second circulation pipeline, and it is internal to catch up into reation kettle with the residual material, avoids the material extravagant, and guarantees production safety.
The following further description is made with reference to the accompanying drawings and detailed description.
Drawings
Fig. 1 is a schematic connection diagram of the present invention.
In the attached drawings, 1 is a first circulation pipeline, 2 is a second circulation pipeline, 3 is a reaction kettle body, 4 is a material storage tank, 5 is a material distributor, 6 is a filler rectifying column, 7 is a first heat exchanger, 8 is a first material conveying pump, 9 is a second material conveying pump, 10 is a second heat exchanger, 11 is a third heat exchanger, 12 is an air supplementing pipe, a is a first valve, b is a second valve, c is a third valve, d is a fourth valve, e is a fifth valve, f is a sixth valve, and g is a seventh valve.
Detailed Description
The utility model discloses in, do not mark equipment, the part of concrete structure or model select for use the equipment or the part of chemical industry field conventionality usually, do not mark the connected mode that connected mode or the manufacturer's suggestion that are chemical industry field conventionality usually of concrete connected mode.
Referring to fig. 1, a specific embodiment of a polymerization inhibition reaction device is shown. The polymerization inhibition reaction device comprises a reaction kettle body 3, a first circulating pipeline 1, a second circulating pipeline 2 and three material storage tanks 4, obviously, the reaction kettle body is provided with conventional auxiliary mechanisms such as a heat exchange jacket, a stirring device and the like in a matching manner, the top of the reaction kettle body is provided with a feeding hole, and the bottom of the reaction kettle body is provided with a discharging hole. And a material distributor 5 is arranged at the upper part of the inner cavity of the reaction kettle body 3. Set up vertical filler rectifying column 6 that extends up on the vapour phase bin outlet of the reation kettle body 3, filler rectifying column 6 is stainless steel net filled column, the extension end of filler rectifying column 6 is parallelly connected with the feed inlet of these three material storage tanks 4 through first heat exchanger 7, and the feed inlet of each material storage tank 4 all is equipped with first valve an, and is general, first heat exchanger adopts shell and tube heat exchanger for with the light fraction condensation for liquid, the feed inlet of each material storage tank still sets up the flowmeter, be located the first valve low reaches that correspond, in order to improve the efficiency of evaporating of fraction, each material storage tank 4 all is parallelly connected with the negative pressure source, set up sixth valve f between each material storage tank and the negative pressure source. The reactor comprises a first circulation pipeline 1, a first material conveying pump 8, a second heat exchanger 10 and a fourth valve d, wherein the first circulation pipeline 1 is provided with the first material conveying pump 8, the upstream end of the first circulation pipeline 1 is connected with a reaction kettle body 3, and the downstream end supplies materials to a material distributor 5. The second circulation pipeline 2 is provided with a second material conveying pump 9, the upstream end of the second circulation pipeline 2 is connected with the reaction kettle body 3, the downstream end of the second circulation pipeline 2 is connected with the packing rectifying column 6 and is positioned at the height position of the packing rectifying column 3/4, in the embodiment, the second circulation pipeline 2 is provided with a third heat exchanger 11 and a fifth valve e, the third heat exchanger 11 is a ratchet-plate heat exchanger, the fifth valve e is positioned at the downstream of the third heat exchanger 11, the second circulation pipeline 2 is connected with the bottom of the reaction kettle body 3 after being connected with the upstream end of the first circulation pipeline 1 in parallel, and the parallel section of the first circulation pipeline 1 and the second circulation pipeline 2 is provided with an air supplementing pipe 12 and is controlled to be opened and closed by a seventh valve g.
The utility model discloses an operating principle does, and it is internal to drop into reation kettle with reaction material, and presss from both sides the cover to fill into heat transfer medium to the supporting heat transfer of the reation kettle body, like steam to the stirring makes the reaction go on. The generated low-boiling point components fill the inner space of the reaction kettle body in a vapor phase, and after the components are condensed into liquid along the packing rectification column, the corresponding first valve is opened according to actual needs, and the liquid is collected to the corresponding material storage tank. In the process, the first material conveying pump and the second material conveying pump are started, so that the liquid phase in the reaction kettle body is uniformly sprayed in the hollow space of the reaction kettle body in a liquid drop mode and is contacted with the gas phase in the hollow space of the reaction kettle body, and the polymerization inhibitor can effectively prevent the gas phase in the hollow space of the reaction kettle body from polymerizing, so that the liquid phase in the reaction kettle body flows back to the packing rectification column and is contacted with the light gas phase in the packing rectification column, the purity of the light fraction is improved, and the polymerization of the light gas phase can be effectively avoided.
Claims (7)
1. A polymerization inhibition reaction device is characterized in that: comprises a reaction kettle body (3), a first circulating pipeline (1), a second circulating pipeline (2) and a plurality of material storage tanks (4),
a material distributor (5) is arranged at the upper part of the inner cavity of the reaction kettle body (3), a vertically upward extending filler rectifying column (6) is arranged on a vapor phase discharge port of the reaction kettle body (3), the extending end of the filler rectifying column (6) is connected with the feed inlets of the plurality of material storage tanks (4) in parallel through a first heat exchanger (7), the feed inlets of the material storage tanks (4) are respectively provided with a first valve (a),
a first material conveying pump (8) is arranged on the first circulating pipeline (1), the upstream end of the first circulating pipeline (1) is connected with the reaction kettle body (3), the downstream end supplies material to the material distributor (5),
and a second material conveying pump (9) is arranged on the second circulating pipeline (2), the upstream end of the second circulating pipeline (2) is connected with the reaction kettle body (3), and the downstream end of the second circulating pipeline is connected with the packing rectifying column (6) and is positioned at the height position of the packing rectifying column 3/4.
2. The polymerization inhibition reaction device according to claim 1, wherein: the heat exchanger is characterized in that a second valve (b) is arranged on the first circulating pipeline (1), is positioned at the downstream of the first material conveying pump (8), and further comprises a second heat exchanger (10), wherein the second heat exchanger (10) is connected to the first circulating pipeline (1) in parallel, a third valve (c) is arranged at a material inlet of the second heat exchanger (10), is positioned at the upstream of the second valve (b), and a fourth valve (d) is arranged at a material outlet of the second heat exchanger (10), and is positioned at the downstream of the second valve (b).
3. The polymerization inhibition reaction device according to claim 2, wherein: the second heat exchanger (10) is a shell and tube heat exchanger.
4. The polymerization inhibition reaction device according to claim 1, wherein: the second circulation pipeline (2) is provided with a third heat exchanger (11) and a fifth valve (e), the third heat exchanger (11) is a ratchet plate type heat exchanger, and the fifth valve (e) is positioned at the downstream of the third heat exchanger (11).
5. The polymerization inhibition reaction device according to claim 1, wherein: each material storage tank (4) is connected with the negative pressure source in parallel, and a sixth valve (f) is arranged between each material storage tank and the negative pressure source.
6. The polymerization inhibition reaction device according to claim 1, wherein: the packing rectifying column (6) is a stainless steel wire mesh packing column.
7. The polymerization inhibition reaction device according to claim 1, wherein: the upstream ends of the first circulating pipeline (1) and the second circulating pipeline (2) are connected in parallel and then connected with the bottom of the reaction kettle body (3), and the parallel sections of the first circulating pipeline (1) and the second circulating pipeline (2) are provided with air supplementing pipes (12) and are controlled to be opened and closed through a seventh valve (g).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220371610.2U CN217189487U (en) | 2022-02-23 | 2022-02-23 | Polymerization inhibition reaction device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220371610.2U CN217189487U (en) | 2022-02-23 | 2022-02-23 | Polymerization inhibition reaction device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217189487U true CN217189487U (en) | 2022-08-16 |
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ID=82798829
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220371610.2U Active CN217189487U (en) | 2022-02-23 | 2022-02-23 | Polymerization inhibition reaction device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217189487U (en) |
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2022
- 2022-02-23 CN CN202220371610.2U patent/CN217189487U/en active Active
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