CN219595896U - Rectifying device - Google Patents
Rectifying device Download PDFInfo
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- CN219595896U CN219595896U CN202321358301.2U CN202321358301U CN219595896U CN 219595896 U CN219595896 U CN 219595896U CN 202321358301 U CN202321358301 U CN 202321358301U CN 219595896 U CN219595896 U CN 219595896U
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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
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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Abstract
The utility model relates to the technical field of rectification energy-saving processes, and discloses a rectification device, which comprises a rectification tower, a tower kettle reboiler, a condenser and a compressor; a working medium condensation chamber and a kettle liquid evaporation chamber which exchange heat with each other are arranged in the tower kettle reboiler; a material condensing side and a working medium evaporating side which are in heat exchange connection with each other are arranged in the condenser; the compressor, the working medium condensation chamber and the working medium evaporation side are sequentially and circularly connected; the bottom of the rectifying tower is communicated with the kettle liquid evaporation chamber; the top of the kettle liquid evaporation chamber is provided with an evaporation chamber; the vaporization chamber is communicated with a steam inlet of the rectifying tower; the top steam outlet of the rectifying tower is connected with the material condensation side; and a condensate outlet pipeline is arranged at the outlet of the material condensation side. The rectifying device can effectively reduce the energy consumption and the running cost in the rectifying process.
Description
Technical Field
The utility model relates to the technical field of energy-saving rectification processes, in particular to a rectification device.
Background
The rectification process is a separation technology widely used in the fields of chemistry, pharmacy, petrochemical industry and the like, and can separate various components in a mixture according to different boiling points. The conventional rectification process consumes a large amount of energy sources including steam, electric power and the like, resulting in high energy consumption and production cost. Therefore, how to reduce the energy consumption in the rectification process is a hot spot problem.
In the prior art, the energy consumption in the rectification process is reduced by improving the column plate structure, reducing the number of column plates, improving the reflux ratio and the like. However, these methods have some problems, although they have some effects. For example, improving the tray structure and reducing the number of trays requires retrofitting existing rectification apparatus at higher cost, while increasing the reflux ratio reduces the yield of product.
Disclosure of Invention
The utility model aims to solve the problem of high energy consumption in the rectification process in the prior art, and provides a rectification device which can effectively reduce the energy consumption and the running cost in the rectification process.
In order to achieve the above object, the present utility model provides a rectifying apparatus including a rectifying tower, a tower kettle reboiler, a condenser, and a compressor; a working medium condensation chamber and a kettle liquid evaporation chamber which are in heat exchange connection with each other are arranged in the tower kettle reboiler; a material condensation side and a working medium evaporation side which are in heat exchange connection with each other are arranged in the condenser; the compressor, the working medium condensation chamber and the working medium evaporation side are sequentially and circularly connected; the bottom of the rectifying tower is communicated with the kettle liquid evaporation chamber; the top of the kettle liquid evaporation chamber is provided with an evaporation chamber; the vaporization chamber is communicated with a steam inlet of the rectifying tower; the top steam outlet of the rectifying tower is communicated with the material condensation side; and a condensate outlet pipeline is arranged at the outlet of the material condensation side.
Preferably, the outer end of the condensate outlet pipeline is connected with a condensate reflux pipeline and a tower top product outlet pipeline, and the condensate reflux pipeline is connected with a condensate reflux inlet of the rectifying tower.
Preferably, the condensate reflux pipeline and the tower top product outlet pipeline are respectively provided with a regulating valve.
Preferably, an expansion valve is arranged on the working medium flow pipeline between the working medium condensation chamber and the working medium evaporation side.
Preferably, a compressor suction tank is provided on an inlet line of the compressor.
Preferably, the bottom of the compressor suction tank is provided with an evacuation pipe.
Preferably, the compressor is a centrifugal compressor.
Preferably, a tower kettle steam pipeline is arranged between the top outlet of the vaporization chamber and the steam inlet of the rectifying tower.
Preferably, a steam outlet pipeline is arranged between the tower top steam outlet and the steam inlet on the material condensation side.
Preferably, a communicating pipe is arranged between the bottom of the rectifying tower and the kettle liquid evaporation chamber.
Through above-mentioned technical scheme, this rectifier unit has following advantage compared with prior art:
1. the device adopts the closed loop connection of the compressor, the tower kettle reboiler and the condenser, recovers the waste heat in the rectifying tower through the condenser, and transmits the waste heat to the working medium of a downstream pipeline for recycling through the heat exchange of the material condensation side and the working medium evaporation side, and as the waste heat in the rectifying tower is effectively utilized, the energy consumption is reduced, compared with the traditional rectifying process, the device inputs 1 part of electric energy through the compressor, realizes the utilization of 4-7 parts of heat energy, and saves the external circulating cooling water needed by the original tower top condenser in the prior art;
2. the rectifying device does not need to evaporate kettle liquid by adopting externally supplied steam, but adopts a mode of electrically driven compressors to compress, boost and heat working medium to heat the kettle liquid, compared with externally supplied steam from a coal-fired steam turbine, the rectifying device has the advantage of low energy consumption, and electric energy can be converted by solar energy, wind energy and the like, so that pollutant emission generated by traditional combustion energy sources is avoided, and the rectifying device accords with the concepts of environmental protection and sustainable development;
3. by adopting the regenerative cycle process of the heat pump system, the working medium with certain heat energy recovered is compressed and heated through the compressor, and the heated working medium is used as a heat source in a tower kettle reboiler to directly heat kettle liquid, so that the energy utilization rate is further improved, and the energy waste is reduced.
Drawings
Fig. 1 is a schematic structural view of a preferred embodiment of the rectifying apparatus of the present utility model.
Description of the reference numerals
1-a rectifying tower; a 2-condenser; 3-compressor suction tank; 4-tower kettle reboiler; 5-compressor; 6-an expansion valve; 7-condensate reflux line; 8-overhead product outlet line; 9-a steam outlet line; an inlet line to the 10-compressor; 11-a tower kettle steam pipeline; 12-communicating pipe; 13-an outlet line of the compressor; 14-a feedstock inlet line; 15-working medium flow lines; 16-condensate outlet line; 17-regulating valve.
Detailed Description
The following describes specific embodiments of the present utility model in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the utility model, are not intended to limit the utility model.
In the present utility model, unless otherwise indicated, terms such as "upper, lower, left, right, front, rear, and inner and outer" and the like are used merely to denote the orientation of the term in a conventional use state or are commonly understood by those skilled in the art, and should not be construed as limiting the term.
Referring to the rectification apparatus shown in fig. 1, the rectification apparatus includes a rectification column 1, a column bottom reboiler 4, a condenser 2, and a compressor 5; a working medium condensation chamber and a kettle liquid evaporation chamber which are in heat exchange connection with each other are arranged in the tower kettle reboiler 4; a material condensation side and a working medium evaporation side which are in heat exchange connection with each other are arranged in the condenser 2; the compressor 5, the working medium condensation chamber and the working medium evaporation side are sequentially and circularly connected; the bottom of the rectifying tower 1 is communicated with the kettle liquid evaporation chamber; the top of the kettle liquid evaporation chamber is provided with an evaporation chamber; the vaporization chamber is communicated with a steam inlet of the rectifying tower 1; the top steam outlet of the rectifying tower 1 is connected with the material condensation side; the outlet of the condensing side of the material is provided with a condensate outlet line 16.
Through implementation of the technical scheme, the rectifying device can effectively reduce energy consumption and operation cost in the rectifying process.
The operation process of the rectifying device is as follows: in the first aspect, raw materials enter the rectifying tower 1 through a raw material inlet pipeline 14, fall under the action of gravity and enter a kettle liquid evaporation chamber in a kettle reboiler 4, kettle liquid in the kettle liquid evaporation chamber is heated by working medium in a working medium condensation chamber to quickly rise temperature and form kettle vapor at the upper part, the kettle vapor enters the rectifying tower 1 through a vapor inlet, a vapor phase part rises and enters a condenser 2 through a tower top vapor outlet, a liquid phase part falls back to the bottom of the rectifying tower 1, the kettle vapor entering the condenser 2 is quickly cooled and forms condensate under the heat exchange action of the condenser 2, and the condensate is discharged through a condensate outlet pipeline 16 and is collected or reflowed; in the second aspect, the working medium for heat exchange is compressed into a high-temperature and high-pressure state by the compressor 5, then the liquid in the tower kettle reboiler 4 is heated, the working medium is cooled into a high-temperature and high-pressure liquid state after passing through the tower kettle reboiler 4, and the cooled working medium exchanges heat with the tower top steam after entering the condenser 2, so that the working medium is quickly heated and vaporized, and the vaporized working medium enters the compressor 5 again for the next cycle process.
The rectification device has the following effects due to the process:
1. the closed loop connection of the compressor 5, the tower kettle reboiler 4 and the condenser 2 is adopted, the waste heat in the rectifying tower 1 is recovered through the condenser 2 and is transferred to the working medium of a downstream pipeline for recycling through the heat exchange of the material condensation side and the working medium evaporation side, and the waste heat in the rectifying tower 1 is effectively utilized, so that the energy consumption is reduced;
2. the rectifying device does not need a mode of externally supplying steam to evaporate kettle liquid, but adopts a mode of electrically driving the compressor 5 to compress and heat working medium to heat the kettle liquid, compared with the mode of externally supplying steam, the rectifying device has the advantage of low energy consumption, and electric energy can be converted by solar energy, wind energy and the like, so that pollutant emission generated by traditional combustion energy sources is avoided, and the rectifying device accords with the concepts of environmental protection and sustainable development;
3. by adopting the regenerative cycle process of the heat pump system, the working medium with certain heat energy recovered is compressed and heated through the compressor 5, and the heated working medium is used as a heat source in the tower kettle reboiler 4 to directly heat kettle liquid, so that the energy utilization rate is further improved, and the energy waste is reduced.
The high-temperature high-pressure working medium exchanges heat with the material to be heated, and transfers the heat energy emitted by the working medium to the heat to be recovered, so that the energy transfer and the heat energy reutilization are realized.
For example: the heat in the utility model is transferred and recovered to the tower kettle steam.
In this embodiment, in order to further improve the quality of the outlet condensate product, the outer end of the condensate outlet line 16 is connected to a condensate reflux line 7 and an overhead product outlet line 8, and the condensate reflux line 7 is connected to the condensate reflux inlet of the rectifying tower 1. Optionally, a portion of the condensate is returned to the rectifying column 1 for further rectification by providing a condensate return line 7 and a top product outlet line 8.
Of course, in order to be able to control the reflux ratio better, a regulating valve 17 is provided on each of the condensate reflux line 7 and the overhead product outlet line 8. The function of the regulating valve 17 is to regulate the flow of condensate in the condensate return line 7 and the overhead product outlet line 8 in order to better regulate the reflux ratio.
In this embodiment, in order to further improve the evaporation effect and the heat exchange effect when the working medium enters the condenser 2, an expansion valve 6 is provided on the working medium flow line 15 between the working medium condensation chamber and the working medium evaporation side.
By arranging the expansion valve 6 on the working medium flow pipeline 15, the high-temperature and high-pressure liquid working medium is subjected to pressure release and temperature reduction through the expansion valve 6 to form a low-temperature and low-pressure working medium state, and then heat exchange is carried out between the condenser 2 and the tower top steam, so that heat energy in condensate of a mixture to be distilled is transferred to the working medium, and energy transfer is realized.
Such as: in the condenser 2, the low-temperature low-pressure working medium exchanges heat with the steam-state mixture to be distilled, the tower top steam generated in the rectifying tower 1 is condensed into liquid to form condensate, and heat energy in the mixture to be distilled is transferred to the working medium, so that energy transfer and heat energy reutilization are realized.
In this embodiment, a compressor suction tank 3 is provided on the inlet line 10 of the compressor. The vaporized working medium is subjected to gas-liquid separation before entering the compressor 5 through the compressor suction tank 3, so that the compressor 5 is ensured not to suck liquid to generate liquid impact, and the safety of the compressor 5 is further ensured.
Of course, in order to facilitate the discharge of the liquid accumulated in the compressor suction tank 3, the bottom of the compressor suction tank 3 is provided with an emptying pipe. The emptying pipe can be connected with the part of the flowing liquid working medium in the circulating pipeline so as to be recycled.
In this embodiment, the compressor 5 is a centrifugal compressor in order to further obtain a better compression effect of the working medium.
In this embodiment, a bottom vapor line 11 is provided between the top outlet of the vaporization chamber and the vapor inlet of the rectification column 1. Vaporized bottoms vapor is introduced into the vapor inlet of rectifying column 1, and thus into rectifying column 1, through bottoms vapor line 11 provided, and the top outlet of the vaporization chamber is usually provided at the top end of bottoms reboiler 4, so that bottoms vapor is better discharged.
In this embodiment, a steam outlet line 9 is provided between the overhead steam outlet and the steam inlet on the condensing side of the material. The steam at the top of the tower is better led into the material condensation side through the arrangement of the steam outlet pipeline 9 so as to heat the working medium, thereby realizing heat exchange between the steam at the top of the tower and the working medium.
In this embodiment, a communication pipe 12 is provided between the bottom of the rectifying column 1 and the tank evaporation chamber. The liquid level of the kettle liquid in the rectifying tower 1 is consistent with the liquid level of the kettle liquid in the kettle liquid evaporation chamber through the arrangement of the communicating pipe 12.
In the present utility model, the column bottoms reboiler 4 may be selected within a wide range in the art as long as it has a working medium condensing chamber, a bottom liquid evaporating chamber and a vaporizing chamber, and allows heat exchange between the working medium condensing chamber and the bottom liquid evaporating chamber, and column bottoms vapor in the bottom liquid evaporating chamber can be discharged through the vaporizing chamber.
In the present utility model, the condenser 2 may be selected within a wide range in the art as long as it has a material condensing side and a working medium evaporating side and enables heat exchange between the material condensing side and the working medium evaporating side, for example, an evaporative condenser is employed.
In addition, the refrigerant, vapor or methanol and the like can be adopted as the circulating working medium, and the specific working medium is evaluated according to the temperature of the original tower top vapor and the tower bottom liquid, so that the working medium is ensured to ensure that the heat pump system can achieve the optimal performance, the design difficulty and cost of core equipment and the like.
In conclusion, the rectifying device has the advantages and positive effects of remarkable energy consumption advantages and a green electricity driven low-energy consumption rectifying process, can effectively reduce the energy consumption in the rectifying process, reduce environmental pollution, improve the energy utilization efficiency, and have good application prospects and economic benefits.
The preferred embodiments of the present utility model have been described in detail above with reference to the accompanying drawings, but the present utility model is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present utility model within the scope of the technical concept of the present utility model, and all the simple modifications belong to the protection scope of the present utility model.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the utility model can be made without departing from the spirit of the utility model, which should also be considered as disclosed herein.
Claims (10)
1. The rectifying device is characterized by comprising a rectifying tower (1), a tower kettle reboiler (4), a condenser (2) and a compressor (5);
a working medium condensation chamber and a kettle liquid evaporation chamber which are in heat exchange connection with each other are arranged in the tower kettle reboiler (4);
a material condensation side and a working medium evaporation side which are in heat exchange connection with each other are arranged in the condenser (2);
the compressor (5), the working medium condensation chamber and the working medium evaporation side are sequentially and circularly connected;
the bottom of the rectifying tower (1) is communicated with the kettle liquid evaporation chamber;
the top of the kettle liquid evaporation chamber is provided with an evaporation chamber;
the vaporization chamber is communicated with a steam inlet of the rectifying tower (1);
the top steam outlet of the rectifying tower (1) is communicated with the material condensation side;
and a condensate outlet pipeline (16) is arranged at the outlet of the material condensation side.
2. Rectifying device according to claim 1, characterized in that the outer end of said condensate outlet line (16) is connected with a condensate return line (7) and a top product outlet line (8), said condensate return line (7) being connected to the condensate return inlet of said rectifying column (1).
3. Rectifying device according to claim 2, characterized in that a regulating valve (17) is provided in each of the condensate return line (7) and the overhead product outlet line (8).
4. Rectifying device according to claim 1, characterized in that an expansion valve (6) is arranged on the working medium flow line (15) between the working medium condensation chamber and the working medium evaporation side.
5. Rectifying device according to claim 1, characterized in that a compressor suction tank (3) is provided on the inlet line (10) of the compressor.
6. Rectifying device according to claim 5, characterized in that the bottom of said compressor suction tank (3) is provided with an evacuation pipe.
7. Rectifying device according to claim 1, characterized in that said compressor (5) is a centrifugal compressor.
8. Rectifying device according to claim 1, characterized in that a bottom vapor line (11) is arranged between the top outlet of the vaporization chamber and the vapor inlet of the rectifying column (1).
9. Rectifying device according to claim 1, characterized in that a steam outlet line (9) is arranged between the top steam outlet and the steam inlet of the material condensation side.
10. The rectifying device according to claim 1, characterized in that a communicating pipe (12) is arranged between the bottom of the rectifying tower (1) and the kettle liquid evaporation chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321358301.2U CN219595896U (en) | 2023-05-31 | 2023-05-31 | Rectifying device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321358301.2U CN219595896U (en) | 2023-05-31 | 2023-05-31 | Rectifying device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219595896U true CN219595896U (en) | 2023-08-29 |
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ID=87757391
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321358301.2U Active CN219595896U (en) | 2023-05-31 | 2023-05-31 | Rectifying device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219595896U (en) |
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2023
- 2023-05-31 CN CN202321358301.2U patent/CN219595896U/en active Active
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