CN214810902U

CN214810902U - Folded plate type tubular reaction device

Info

Publication number: CN214810902U
Application number: CN202121613912.8U
Authority: CN
Inventors: 崔红建; 朱巧根; 张�杰
Original assignee: Shandong Tianan Chemical Co ltd
Current assignee: Shandong Tianan Chemical Co ltd
Priority date: 2021-07-15
Filing date: 2021-07-15
Publication date: 2021-11-23
Anticipated expiration: 2031-07-15

Abstract

The utility model relates to a folded plate formula tubular reaction unit, include: an outer tube having a cavity structure; the inner pipe is positioned at the inner side of the outer pipe, and an annular reaction space is arranged between the outer pipe and the inner pipe; the stirring scraper is arranged in the reaction space, the edges of two sides of the stirring scraper are arranged close to the inner pipe and the outer pipe, and the stirring scraper can rotate in the annular reaction space. The stirring scraper is close to the outer wall of the inner pipe and the inner wall of the outer pipe, and liquid phase forms liquid phase films on the inner side wall of the outer pipe and the outer side wall of the inner pipe. The effect of mass and heat transfer is improved, the problem of heat accumulation in reaction is solved, the problem of uneven wall flow and liquid distribution is solved, and the reaction effect is improved.

Description

Folded plate type tubular reaction device

Technical Field

The utility model belongs to the sealing strip field, concretely relates to folded plate formula's tubular reaction unit.

Background

The information in this background section is only for enhancement of understanding of the general background of the invention and is not necessarily to be construed as an admission or any form of suggestion that this information forms the prior art that is already known to a person of ordinary skill in the art.

The material concentration and the temperature in the tank reactor are equal everywhere, the material particles have different residence times in the reactor, that is, the reactor has the mixture of materials with different residence times, the back mixing degree is the maximum in many types of reactors, and the advantage is that the material concentration, the temperature and the component composition at any point in the reactor are the same.

Because of the advantages, the tank reactor is widely used, and has the characteristics of low investment, easy operation and random combination of reactants in terms of cost, and the tank reactor becomes one of the most widely applied reactors in the chemical industry.

However, the tank reactors also have disadvantages that most of them adopt a jacket heat transfer mode, the heat exchange area is small, thus the reaction time is prolonged, and some reaction types have strict requirements on time, in addition, the temperature of the tank wall is high, and for the position close to the tank wall, the materials are affected by high heat, and side reactions often occur.

In addition, for part of gas-liquid reaction types, because the retention time of gas substances in a reaction system is short, part of the gas substances can escape from the reaction kettle after not participating in the reaction, so that raw materials are wasted, and even environmental protection pressure can be brought to enterprises, so that the enterprise cost is increased.

In order to improve the reaction defects, many enterprises adopt tower reactors, the types of the reactors are more, and the reactors are typically bubble tower reactors, packed tower reactors, plate tower reactors and spray tower reactors, and the reactors have the characteristics of small volume and large heat transfer area per unit volume and are particularly suitable for reactions with large heat effect.

Therefore, the reactor has the characteristics of high reaction speed and high production capacity, improves the reaction environment to a certain extent, improves the product quality, but still has the problem of heat accumulation for certain reactions with high requirements on mass transfer and heat transfer, even has the problem of serious wall flow and liquid distribution unevenness, and almost does not improve the reaction conditions.

SUMMERY OF THE UTILITY MODEL

To solve the problems in the prior art, the present invention provides a folded plate type tubular reactor. The problems of heat accumulation, and uneven wall flow and liquid distribution in the conventional tubular reactor are solved.

In order to solve the technical problem, the technical scheme of the utility model is that:

a folded plate tubular reactor apparatus comprising:

an outer tube having a cavity structure;

the inner pipe is positioned at the inner side of the outer pipe, and an annular reaction space is arranged between the outer pipe and the inner pipe;

the stirring scraper is arranged in the reaction space, the edges of two sides of the stirring scraper are arranged close to the inner pipe and the outer pipe, and the stirring scraper can rotate in the annular reaction space.

Through the effect of stirring scraper blade, gas and liquid are constantly stirred, make the contact between the liquid phase material and the gaseous material between inner tube and the outer tube more even. The stirring scraper is close to the outer wall of the inner pipe and the inner wall of the outer pipe, and liquid phase forms liquid phase films on the inner side wall of the outer pipe and the outer side wall of the inner pipe. The effect of mass and heat transfer is improved, the problem of heat accumulation in reaction is solved, the problem of uneven wall flow and liquid distribution is solved, and the reaction effect is improved.

The utility model discloses one or more technical scheme has following beneficial effect:

compared with the traditional tubular reaction device, the glass lining layer between the inner pipeline and the outer pipeline is a reaction interface, the gas-liquid two-phase contact area is large, the liquid phase is in a film state, and the reaction rate is obviously improved.

The liquid material has even temperature, avoids long-time local heating, has short retention time in the system and reduces the occurrence of side reaction to a certain extent.

The device collocation is convenient, and the compound mode can adopt multistage parallelly connected or establish ties, and the body internal diameter can set up wantonly, and the internal diameter difference between interior outer tube keeps in a less scope, is favorable to the abundant reaction of gaseous material.

Drawings

The accompanying drawings, which form a part hereof, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate exemplary embodiments of the disclosure and together with the description serve to explain the invention and not to limit the invention unduly.

FIG. 1 is a sectional view of a folded plate type tubular reaction apparatus of example 1;

FIG. 2 is a plan view of a folded plate type tubular reactor of example 1;

FIG. 3 is a sectional view of a folded plate type tubular reaction apparatus of example 2;

FIG. 4 is a plan view of a folded plate type tubular reaction apparatus of example 2;

FIG. 5 is a side view of the centrifugal disk of embodiment 2;

FIG. 6 is a top view of the centrifugal disk of embodiment 2;

the device comprises a motor 1, a motor 2, a feeding pipeline 3, a gas discharging pipeline 4, an outer pipe 5, an inner pipe 6, a centrifugal disc 7, an outer pipe heat-preservation jacket 8, an inner pipe heat-preservation jacket 9, an outer pipe glass lining layer 10, a stirring scraper 11, a heat medium inlet pipeline 12, a heat medium outlet pipeline 13, an inner pipe bearing support 14, a product outlet pipeline 15, an inner pipe glass lining layer 16, a spraying pipeline 19, a gas coil pipe 20, a gas feeding pipeline 21, a connecting pipe 22, a liquid channel 23, a connecting plate 24, a fixing ring 25, a liquid distribution disc 26, a rotating shaft 27 and a connecting rod.

Detailed Description

It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the invention. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.

A folded plate tubular reactor apparatus comprising:

an outer tube having a cavity structure;

As a further technical scheme, the stirring folded plate is a V-shaped bent plate, and the V-shaped bent plate is provided with a folded angle.

As a further technical scheme, a material centrifugal disc is arranged in the outer pipe and above the inner pipe.

Further, still include the feed line, the feed line passes the top of outer tube, and the bottom exit end of feed line is located the top of centrifugal tray.

Further, the material centrifugal disc is connected with the stirring folded plate through a connecting rod.

Further, the material centrifugal disc is connected with a motor.

As a further technical scheme, the centrifugal disc is provided with a cavity structure.

Furthermore, the centrifugal disc is provided with a liquid channel, and the liquid channel extends into the cavity of the lower-layer centrifugal disc from the upper part of the centrifugal disc.

Furthermore, a liquid inlet is arranged at the upper part of the liquid channel, and a liquid outlet is arranged at the bottom of the liquid channel.

Furthermore, the liquid channel is coaxially arranged with the rotating shaft of the motor and sleeved outside the rotating shaft.

Furthermore, a spraying pipeline is arranged between the adjacent folded plates, a spraying opening is formed in the side wall of the spraying pipeline, the top of the spraying pipeline is connected with the centrifugal disc through a fixing rod, and the bottoms of the spraying pipelines are connected through fixing rings.

As a further technical scheme, a liquid distribution disc is arranged at the top of the inner side of the outer pipe, a liquid ejection port is arranged at the bottom of the liquid distribution disc, and a liquid inlet port is arranged at the top of the liquid distribution disc.

As a further technical scheme, an air coil is arranged inside the outer pipe and outside the lower part of the inner pipe, the air coil is arranged around the inner pipe, and the air coil is positioned below the stirring folded plate.

Further, a gas feed pipe is arranged to penetrate through the bottom of the outer pipe, and the top of the gas feed pipe is connected with the gas coil pipe.

As a further technical scheme, the inner side wall of the outer pipe and the outer side wall of the inner pipe are respectively provided with a glass lining layer.

As a further technical scheme, the outer side wall of the outer pipe and the outer side wall of the inner pipe are respectively provided with an outer pipe heat-preservation jacket and an inner pipe heat-preservation jacket.

Furthermore, the outer pipe heat-insulating jacket and the inner pipe heat-insulating jacket are respectively connected with a heat medium inlet pipeline and a heat medium outlet pipeline.

As a further technical scheme, a gas discharging pipeline is arranged at the top of the outer pipe, and a product outflow pipeline is arranged at the bottom of the outer pipe.

The utility model relates to a tubular reaction unit for gas-liquid reaction, which is a tubular reaction unit for the mixed reaction of liquid phase and gas phase two-phase substances. For the existing kettle type reactor, for the gas-liquid reaction type, because the retention time of gas substances in a reaction system is short, part of the gas substances escape from the reaction kettle in time for reaction. The tower reactor has the problems of heat accumulation and uneven liquid wall flow and distribution.

Example 1

A folded plate type tubular reaction apparatus for gas-liquid reaction, comprising: an outer tube 4 having a cavity structure; an inner tube 5 positioned inside the outer tube 4, an annular reaction space being provided between the outer tube 4 and the inner tube 5; and the stirring scraper 10 is arranged in the reaction space, the two side edges of the stirring scraper 10 are arranged close to the inner pipe and the outer pipe, and the stirring scraper can rotate in the annular reaction space.

A reaction annulus is formed between the outer tube 4 and the inner tube 5. The gas moves from bottom to top and the liquid moves from top to bottom. The stirring scraper blade rotates along the annular space, the stirring scraper blade constantly cuts materials in the annular space, liquid forms liquid film on the inner wall of the outer pipe and the outer wall of the inner pipe under the action of the stirring scraper blade, and gas constantly contacts with the liquid film under the action of the scraper blade to perform mixing reaction.

So the utility model discloses a tubular reaction unit has solved in the gas-liquid double-phase reaction, and gaseous dwell time is short, and the problem that the contact effect is not good, tower reactor accumulated heat's problem in addition to and there is wall flow and the inhomogeneous problem that distributes in the liquid. The scraper plate is arranged close to the inner wall of the outer pipe and the outer wall of the inner pipe, so that liquid is uniformly distributed, and wall flow is avoided.

Further, the blending flap 10 is a V-shaped bending plate having a folding angle. Further, a plurality of stirring folded plates 10 are arranged; may be 2 to 6. The bending plate is provided with a folding angle to form a V-shaped structure, so that circular motion is facilitated, liquid scraping is facilitated, and if the bending plate is a straight plate, the center of the straight plate is used as a stress point to drive the scraping plate to perform circular motion, and acting force is not applied to the edges of the two sides of the straight plate; if set up the buckling point, exert the effort to the buckling point, the effort stability more of the edge of the both sides of buckling plate is to the buckling point, can make the both sides edge of buckling plate laminate outer tube inner wall and inner tube outer wall more.

Further, a material centrifugal disc 6 is arranged inside the outer pipe 4 and above the inner pipe. The centrifugal disc 6 will make the liquid entering from the top enter the annular space between the outer tube and the inner tube uniformly.

Furthermore, a feed pipe 2 is included, the feed pipe 2 passes through the top of the outer pipe 4, and the outlet end of the bottom of the feed pipe 2 is positioned above the centrifugal disc 6. The liquid material is introduced to the position of the centrifugal disc by the feeding pipeline, so that the material is uniformly distributed.

Furthermore, the material centrifugal plate 6 is connected with the stirring flap plate 10 through a connecting rod 27. The centrifugal disc 6 provides the stirring flap 10 with rotational power. In one embodiment, the plurality of blending flaps are connected by a fixed ring to which the connecting rods 27 are connected. The stability of the connection is maintained.

Furthermore, the material centrifugal disc 6 is connected with the motor 1.

Further, a layer of structure is arranged inside the centrifugal disc 6, the top of the centrifugal disc 6 is of an open structure, and a centrifugal outlet is arranged on the side wall of the centrifugal disc 6. Liquid in the feeding pipeline 2 enters the centrifugal disc through the open structure, and then is thrown out through the centrifugal outlet under the rotating centrifugal action of the centrifugal disc and enters the annular space.

Further, an air coil 19 is provided inside the outer tube 4 and outside the lower portion of the inner tube 5, the air coil 19 is provided around the inner tube, and the air coil 19 is located below the agitating flap. The gas material enters the gas coil and then enters the annular space for reaction.

Further, a gas feed line 20 is provided through the bottom of the outer tube 4, and the top of the gas feed line 20 is connected to a gas coil. The gas feeding pipeline extends into the annular space from the lower part of the stirring folded plate to be connected with the gas coil pipe, and gas materials are input.

Further, the inner side wall of the outer tube 4 and the outer side wall of the inner tube 5 are respectively provided with a glass lining layer. Respectively an outer pipe glass lining layer 9 and an inner pipe glass lining layer 15. Through setting up glass-lined layer, make outer tube inner wall and inner tube outer wall more smooth and improve corrosion resisting property, make things convenient for the stirring folded plate to scrape the liquid, form the liquid film.

Further, the outer side wall of the outer pipe and the outer side wall of the inner pipe are respectively provided with an outer pipe heat-preservation jacket 7 and an inner pipe heat-preservation jacket 8. The outer pipe heat preservation presss from both sides the cover and heats the outer pipe lateral wall of annular space, and inner tube heat preservation presss from both sides the cover and heats the inner tube lateral wall. Both sides of the annular space are heated simultaneously, which facilitates the heating of the liquid film.

Furthermore, the outer pipe heat-insulating jacket 8 and the inner pipe heat-insulating jacket 7 are respectively connected with a heat medium inlet pipeline and a heat medium outlet pipeline. In one embodiment, the heat medium inlet pipe 11 and the heat medium outlet pipe 12 of the inner pipe are connected to the inner pipe thermal jacket through the inside of the inner pipe. This is provided so as not to interfere with movement of the blending flap.

Further, the top of the outer pipe is provided with a gas discharge pipeline 3, and the bottom of the outer pipe 4 is provided with a product outflow pipeline 14. The reacted liquid flows out from the bottom of the annular space and the unreacted gas is discharged through the gas discharge pipe 3.

Example 2

A folded plate type tubular reaction device for liquid-liquid reaction. Unlike the centrifugal pan structure of example 1, the centrifugal pan is a two-layer structure, without the bottom gas coil 19, and with the spray tubes between adjacent flaps.

Further, the centrifugal disc 6 is provided with a cavity structure.

Furthermore, the centrifugal disc 6 is provided with a liquid channel 22, which liquid channel 22 extends from above the centrifugal disc 6 into the cavity of the centrifugal disc 6. A reaction liquid of the feed conduit 2 falls onto the top upper surface of the centrifugal disc and is then thrown out under the rotating centrifugal action of the centrifugal disc into the annular space.

The other reaction liquid enters the cavity structure of the centrifugal disc 6 through the liquid channel 22. Further, a liquid inlet is provided at the upper portion of the liquid passage, and a liquid outlet is provided at the bottom of the liquid passage 22. This reaction liquid enters the cavity structure through the liquid channel 22. And then into the spray line 16.

Furthermore, a spraying pipe 16 is arranged between adjacent folded plates, a spraying opening is arranged on the side wall of the spraying pipe 16, the top of the spraying pipe is connected with the centrifugal disc through a connecting pipe 21, and the bottoms of the spraying pipes are connected through a fixing ring 24. The liquid in the centrifugal disc enters the spray pipe through the connecting pipe. The liquid in the cavity of the centrifugal disc enters the spraying pipeline and is sprayed out through the spraying port and directly falls onto the inner wall of the outer tube, and the liquid meets the reaction liquid thrown out from the upper layer of the centrifugal disc on the outer wall of the inner tube to react.

Further, the liquid channel 22 is disposed coaxially with the rotating shaft 26 of the motor 1, and is sleeved outside the rotating shaft 26. The entry of fluid from the center of the centrifuge disk is facilitated by the coaxial 26 arrangement. Liquid flows from the outside of the spindle 26, the inside of the liquid channel 22, down to the lower layer of the centrifuge disk. As shown in fig. 5 and 6, the rotating shaft 26 of the motor is fixedly connected with the centrifugal disc through the connecting plate 23. The connecting plate 23 is provided with a mesh plate for facilitating the liquid to pass through, and a bearing is arranged between the liquid channel 22 and the centrifugal disc.

Further, a liquid distribution disc 25 is arranged at the top of the inner side of the outer pipe, a liquid ejection port is arranged at the bottom of the liquid distribution disc, and a liquid inlet port is arranged at the top of the liquid distribution disc. The liquid distribution disc is used for entering a third liquid and directly enters the annular space, and the liquid distribution disc forms film flow on the inner wall of the outer pipe and the outer wall of the inner pipe under the action of the folded plate.

The centrifugal disc is provided with a cavity, two liquids react on the side wall of the annular space, if the two liquids are directly mixed in the centrifugal disc firstly and then enter the annular space, the two liquids react in the centrifugal disc firstly to generate solids, which affects the reaction uniformity of the liquids and is not beneficial to the granularity and uniformity of the obtained product. The centrifugal disc is divided into two layers, separating the two liquids.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A folded plate type tubular reaction device is characterized in that: the method comprises the following steps:

an outer tube having a cavity structure;

2. The folded plate type tubular reactor apparatus according to claim 1, wherein: the stirring folded plate is a V-shaped bent plate, and the V-shaped bent plate is provided with a bent angle.

3. The folded plate type tubular reactor apparatus according to claim 1, wherein: a material centrifugal disc is arranged in the outer pipe and above the inner pipe.

4. A folded plate type tubular reactor apparatus according to claim 3, wherein: the centrifugal separator further comprises a feeding pipeline, the feeding pipeline penetrates through the top of the outer pipe, and the outlet end of the bottom of the feeding pipeline is located above the centrifugal disc.

5. A folded plate type tubular reactor apparatus according to claim 3, wherein: the centrifugal disc is provided with a cavity structure.

6. The folded plate type tubular reactor apparatus according to claim 5, wherein: the centrifugal disc is provided with a liquid channel, and the liquid channel extends into the cavity of the lower-layer centrifugal disc from the upper part of the centrifugal disc.

7. The folded plate type tubular reactor apparatus according to claim 5, wherein: set up between the adjacent folded plate and spray the pipeline, spray the lateral wall of pipeline and set up the sprinkler bead, spray the top of pipeline and pass through the connecting pipe with the centrifugal disk and be connected, a plurality of spray the bottom of pipeline and pass through solid fixed ring and connect.

8. The folded plate type tubular reactor apparatus according to claim 1, wherein: and a gas coil is arranged in the outer pipe and outside the lower part of the inner pipe, surrounds the inner pipe and is positioned below the stirring folded plate.

9. The folded plate type tubular reactor apparatus according to claim 1, wherein: the inner side wall of the outer pipe and the outer side wall of the inner pipe are respectively provided with a glass lining layer.

10. The folded plate type tubular reactor apparatus according to claim 1, wherein: the outer side wall of the outer pipe and the outer side wall of the inner pipe are respectively provided with an outer pipe heat-preservation jacket and an inner pipe heat-preservation jacket.