CN218961791U

CN218961791U - Continuous rectification reaction system

Info

Publication number: CN218961791U
Application number: CN202223369670.XU
Authority: CN
Inventors: 姜圣雨; 林剑; 李晓亮; 王修纲
Original assignee: Lanzhou Kangpeng New Energy Technology Co ltd
Current assignee: Lanzhou Kangpeng New Energy Technology Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-05-05
Anticipated expiration: 2032-12-15

Abstract

The application provides a continuous rectification reaction system, which belongs to the technical field of reactors for fine chemical engineering. The reaction system comprises a feeding device, a rectifying and separating device and a reaction device which are sequentially in fluid communication. Wherein, feed arrangement is equipped with the material input pipeline, the material input pipeline with rectifying separation device fluid communication, rectifying separation device include distillate output section and cauldron liquid output section, cauldron liquid output section with reaction unit fluid communication. The continuous rectification reaction system can realize continuous operation of the rectification-reaction process, is closed in the whole process, effectively prevents materials from deteriorating in the rectification process, and is particularly suitable for the continuous rectification-reaction process of a system for producing a high-viscosity product after rectification separation.

Description

Continuous rectification reaction system

Technical Field

The utility model relates to the technical field of reactors for fine chemical engineering, in particular to a continuous rectification reaction system.

Background

The rectification is a separation process for separating the components by utilizing the different volatilities of the components in the mixture, and is widely applied to various industries such as petrochemical industry, pharmaceutical production, metal smelting and the like due to good separation effect, wide applicability and mature technology. However, for some systems that produce high viscosity products after fractionation, how the material is transferred for further reaction or separation is an important issue to be considered in industrial production. The traditional batch process has high manual operation cost, and for some systems needing to isolate oxygen and water, the problems of serious material loss, possibly harmful substances and the like in the transfer process seriously affect the production efficiency and the product quality.

Disclosure of Invention

In view of the above-mentioned shortcomings of the prior art, the present utility model provides a continuous rectification reaction system, which is suitable for carrying out subsequent reactions on a system subjected to rectification separation and solvent removal, and is particularly suitable for carrying out subsequent reactions on a high-viscosity product subjected to solvent removal. And the rectified kettle liquid is directly introduced into a reaction device for reaction, so that the material transfer process is saved and the material loss is reduced.

To achieve the above and other related objects, the present utility model provides a continuous rectification reaction system, comprising a feeding device, a rectification separation device and a reaction device which are in fluid communication in sequence; the feeding device is provided with a material input pipeline which is in fluid communication with the rectifying and separating device; the rectification separation device comprises a distillate output section and a kettle liquid output section; the kettle liquid output section is in fluid communication with the reaction device.

In one possible embodiment, the rectification separation device comprises a rectification separation column, a condensation mechanism and a reboiling mechanism;

the material input pipeline is in fluid communication with the rectifying separation tower;

the distillate output section is provided with a distillate output pipeline which is in fluid communication with the condensing mechanism;

the outlet of the kettle liquid output section is in fluid communication with the reboiling mechanism, preferably the outlet of the kettle liquid output section is in fluid communication with the reboiling mechanism directly or through a very short (1-100 cm) pipeline.

In a possible embodiment, the rectification separation device further comprises a temperature regulating mechanism; the temperature regulating mechanism is arranged at the inner side of the rectifying and separating tower and/or at the outer side of the rectifying and separating tower;

and/or a separation component is arranged in the rectifying separation tower.

In a possible embodiment, the temperature regulating mechanism is selected from an electric heating tube, an electric heating jacket or a thermal fluid jacket;

and/or the separation member is selected from a packing or a screen.

In one possible embodiment, the reboiling mechanism comprises a material collector and an infrared heater;

the outlet of the kettle liquid output section is in fluid communication with the material collector, and the infrared heater is arranged outside the material collector.

In a possible embodiment, the reaction system further comprises a shielding gas supply; the shielding gas supply device is in fluid communication with the material collector, the rectifying separation tower and the reaction device.

In a possible embodiment, the shielding gas supply is provided with a shielding gas supply line, which is in fluid communication with the material collector.

In a possible embodiment, the material collector is provided with a sampling port.

In a possible embodiment, the material collector is provided with an outlet pipe section, on which a valve is arranged.

In a possible embodiment, the feeding device comprises a feed pusher and a preheater; the material input line is in fluid communication with the feed pusher and the preheater in turn.

In a possible embodiment, the feed pusher is selected from a metering pump or a screw feeder.

As described above, the continuous rectification reaction system has the following beneficial effects:

1) The continuous rectification reaction system can realize continuous operation of the rectification-reaction process, is closed in the whole process, effectively prevents materials from deteriorating in the rectification process, and is particularly suitable for the continuous rectification-reaction process of a system for producing a high-viscosity product after rectification separation.

2) The reboiling mechanism is in fluid communication with the outlet of the kettle liquid output section of the rectifying and separating device, in particular is in direct communication or is communicated through a short pipeline, so that the loss of the material transferring process is reduced, and the energy consumption is reduced.

3) And a temperature regulating mechanism is arranged to supplement heat or supply heat for the rectification separation device.

4) The reboiling mechanism is arranged, so that the viscosity of the viscous kettle liquid can be reduced, the fluidity can be improved, and the components of the viscous kettle liquid can be judged by sampling through the reboiling mechanism.

Drawings

Fig. 1 is a schematic structural diagram of a continuous rectification reaction system according to an embodiment of the present application.

Fig. 2 is a schematic structural diagram of a rectification separation device of the continuous rectification reaction system according to the embodiment of the present application.

Description of the reference numerals

1. Feeding device

11. Material input pipeline

12. Pre-heater

111. Material input pipeline

2. Rectifying and separating device

21. Rectifying separation tower

211. Distillate output section

212. Kettle liquid output section

213. Distillate output pipeline

214. Separating member

22. Condensing mechanism

23. Reboiling mechanism

231. Material collector

232. Infrared heater

233. Valve

24. Temperature regulating mechanism

3. Reaction device

4. Protective gas supply device

41. Protective gas supply pipeline

Detailed Description

Further advantages and effects of the present utility model will become apparent to those skilled in the art from the disclosure of the present utility model, which is described by the following specific examples.

Please refer to fig. 1 and 2. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the utility model to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the utility model, are not intended to be critical to the essential characteristics of the utility model, but are intended to fall within the spirit and scope of the utility model. Also, the terms "inner", "outer", "middle" and "a" are used herein for descriptive purposes only and are not intended to limit the scope of the utility model for practical purposes, but rather are intended to cover various modifications or adaptations of the utility model without materially altering the technical scope thereof.

Example 1

Referring to fig. 1 and 2, the continuous rectification reaction system of the embodiments of the present application includes a feed device 1, a rectification separation device 2, and a reaction device 3 in sequential fluid communication. The feed device 1 is provided with a material inlet line 111, the material inlet line 111 being in fluid communication with the rectifying and separating device 2. The rectifying and separating device 2 comprises a distillate output section 211 and a kettle liquid output section 212. The tank outlet section 212 is in fluid communication with the reactor 3. The distillate component is further processed outside the output system, and the kettle component enters the reaction device to react, so that the continuous rectification reaction system can realize continuous operation of the rectification-reaction process, the whole system is sealed in whole flow, and the deterioration of materials in the rectification process is effectively prevented. The continuous rectification reaction system is suitable for carrying out subsequent reactions on the system after the solvent is removed after rectification separation, and is more suitable for carrying out subsequent reactions on the high-viscosity system after the solvent is removed.

Specifically, the reaction device 3 is used for carrying out subsequent reaction treatment on the kettle liquid component after rectification treatment, and the reaction device 3 is various in selection and can be used for clamping the reaction kettle. The purpose of the rectifying and separating device 2 is to subject the material to a rectifying and separating treatment to obtain a lighter distillate component and a heavier bottoms component, and the rectifying and separating generally refers to a separating process for separating the components by utilizing the difference in volatility of the components in the mixture. After fractionation, a lighter distillate component, typically a low boiling solvent (e.g., tetrahydrofuran, ethanol), and a heavier bottoms component, typically a high boiling, high viscosity product (e.g., chlorosilane), can be provided. The person skilled in the art will know how to select a suitable rectifying and separating device, for example, a rectifying tower is selected as an optional rectifying and separating device, and a separating member is arranged in the rectifying tower, and the separating member is generally a packing or a sieve plate. More specifically, the heat source required by the material separation is from the outside of the rectification separation device and/or the rectification separation device.

In one embodiment, referring to fig. 1 and 2, the rectifying and separating device 2 includes a rectifying and separating column 21, a condensing mechanism 22, and a reboiling mechanism 23. The feed inlet line 111 is in fluid communication with the rectifying separation column 21. The distillate outlet section 211 is provided with a distillate outlet line 213, the distillate outlet line 213 being in fluid communication with the condensing means 22. The outlet of the kettle outlet section 212 is in fluid communication with the reboiling mechanism 23.

Specifically, the distillate component is condensed by the condensing means 22 and collected for subsequent processing. Condensation treatment generally refers to a treatment process in which the stream to be treated is heat exchanged with a suitable cooling medium, thereby lowering the temperature of the stream to be treated. The temperature of the distillate component treated by the rectifying and separating device 21 is still higher, and the distillate component still is in a gaseous state, so that the distillate component needs to be liquefied and collected, and the subsequent treatment is convenient. One skilled in the art will know how to select an appropriate condensing mechanism 22, such as a condenser. The components of the kettle liquid pass through the reboiling mechanism 23 and then enter the reaction device 3. The heat energy of the reboiling mechanism 23 plays a role in reducing the viscosity of the kettle liquid and improving the fluidity. And the concentration of each substance in the kettle liquid component can be detected by sampling through the reboiling mechanism.

The heat source required by the material separation is from the outside of the rectification separation device and/or the rectification separation device. More specifically, 1) the heat source comes from the feeding device 1, the feeding device 1 comprises a feeding propeller 11 and a preheater 12, a material input pipeline 111 is sequentially in fluid communication with the feeding propeller 11 and the preheater 12, and the material enters the rectification separation device after being heated by the preheater 12. 2) For another example, the heat source is a rectifying and separating device, and the rectifying and separating device further comprises a temperature adjusting mechanism 24, wherein the temperature adjusting mechanism 24 is arranged on the inner side of the rectifying and separating tower 21 and/or arranged on the outer side of the rectifying and separating tower 21, and is used for providing the heat source for the rectifying and separating tower 21. Preferably, the electric heating pipe is disposed on the inner wall of the rectifying and separating tower, or an electric heating jacket or a thermal fluid jacket is disposed on the outer side of the rectifying tower 21. The feed pusher 11 is selected from metering pumps or screw feeders. 3) For another example, the heat source is from both forms. The material is first preheated by the anticipator, and preheating of the material is usually performed by heating the material to be treated to a suitable temperature (for example, 100-120 ℃ and 70-90 ℃), and vaporizing a portion of the material to reduce the tower height of the rectifying and separating device, wherein the preheater has various options, such as a heat exchange jacket and a tube array heat exchanger.

In one embodiment, referring to FIG. 2, reboiling mechanism 23 includes a material collector 231 and an infrared heater 232, with the outlet of tank output section 212 in fluid communication with material collector 231, and infrared heater 232 disposed outside material collector 231. Preferably, the connection section between the outlet of the kettle liquid output section 212 and the material collector 231 is as short as possible, generally 1-10 cm, so that kettle liquid components rapidly enter the reaction device 3 for reaction at a higher temperature, and the energy consumption and material loss are reduced.

In one embodiment, the material collector 231 is provided with a sampling port, which facilitates sampling, detecting and judging the substances in the kettle liquid component.

In one embodiment, the material collector 231 is provided with an output pipe section, and a valve 233 is arranged on the output pipe section to control whether the kettle liquid enters the reaction device 3.

In a specific embodiment, the reaction system further comprises a shielding gas supply device 4, and the shielding gas supply device 4 is in fluid communication with the material collector 231, the rectifying separation tower 21 and the reaction device 3. In particular, the shielding gas supply means 4 may be in communication with the material collector 231, the rectifying separation column 21 and the reaction means 3, respectively, or with one of them, preferably with the material collector 231. Specifically, the shielding gas supply device 4 is provided with a shielding gas supply pipeline 41, the shielding gas supply pipeline 41 is in fluid communication with the material collector 231, and residual air in the device is prevented from damaging the material to be treated by inputting the shielding gas into the rectifying and separating device 3. Suitable gas species that may be used as a shielding gas should be known to those skilled in the art, and may be, for example, nitrogen, various inert gases, and the like. Suitable devices which can be used as a shielding gas supply 4 should be known to the person skilled in the art, for example a shielding gas storage tank being transported via a shielding gas supply line 41 and a control valve being provided on the shielding gas supply line 41.

In summary, the continuous rectification reaction system provided by the utility model can realize continuous operation of a rectification-reaction process, the whole system is closed in whole flow, deterioration of materials in the rectification process is effectively prevented, and the continuous rectification-reaction system is especially suitable for continuous rectification-reaction processes of a system for producing a high-viscosity product after rectification separation, and is certainly also suitable for continuous rectification-reaction processes of a system for general solvent removal.

The above embodiments are merely illustrative of the principles of the present utility model and its effectiveness, and are not intended to limit the utility model. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the utility model. Accordingly, it is intended that all equivalent modifications and variations of the utility model be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims

1. A continuous rectification reaction system, which is characterized by comprising a feeding device (1), a rectification separation device (2) and a reaction device (3) which are sequentially in fluid communication;

the feeding device (1) is provided with a material input pipeline (111), and the material input pipeline (111) is in fluid communication with the rectifying and separating device (2);

the rectification separation device (2) comprises a distillate output section (211) and a kettle liquid output section (212);

the kettle liquid output section (212) is in fluid communication with the reaction device (3).

2. Continuous rectification system according to claim 1, characterized in that the rectification separation device (2) comprises a rectification separation column (21), a condensation mechanism (22) and a reboiling mechanism (23);

the material input pipeline (111) is in fluid communication with the rectifying separation tower (21);

the distillate output section (211) is provided with a distillate output pipeline (213), and the distillate output pipeline (213) is in fluid communication with the condensing mechanism (22);

the outlet of the kettle liquid output section (212) is in fluid communication with the reboiling mechanism (23).

3. The continuous rectification reaction system according to claim 2, wherein said rectification separation device (2) further comprises a temperature regulating mechanism (24); the temperature regulating mechanism (24) is arranged at the inner side of the rectification separation tower (21) and/or at the outer side of the rectification separation tower (21);

and/or a separation component (214) is arranged in the rectifying separation tower (21).

4. A continuous rectification reaction system as claimed in claim 3, characterized in that said temperature regulating means (24) are selected from electric heating tubes, jackets for electric heating or jackets for thermal fluids;

and/or the separating member (214) is selected from a packing or a screen.

5. The continuous rectification system as claimed in claim 2, characterized in that said reboiling means (23) comprise a material collector (231) and an infrared heater (232);

the outlet of the kettle liquid output section (212) is in fluid communication with the material collector (231), and the infrared heater (232) is arranged outside the material collector (231).

6. The continuous rectification system as claimed in claim 5, characterized in that the material collector (231) is provided with a sampling port;

and/or the material collector (231) is provided with an output pipe section, and a valve (233) is arranged on the output pipe section.

7. The continuous rectification reaction system according to claim 5, characterized in that it further comprises a shielding gas supply device (4); the shielding gas supply device (4) is in fluid communication with the material collector (231), the rectifying separation tower (21) and the reaction device (3).

8. Continuous rectification reaction system according to claim 7, characterized in that the shielding gas supply device (4) is provided with a shielding gas supply line (41), the shielding gas supply line (41) being in fluid communication with the material collector (231).

9. Continuous rectification reaction system according to any one of claims 1 to 8, characterized in that the feeding device (1) comprises a feed pusher (11) and a preheater (12); the material inlet line (111) is in fluid communication with the feed pusher (11) and the preheater (12) in turn.

10. Continuous rectification reaction system according to claim 9, characterized in that the feed pusher (11) is selected from metering pumps or screw feeders.