CN219355278U - Rectifying column top waste heat recovery system - Google Patents
Rectifying column top waste heat recovery system Download PDFInfo
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- CN219355278U CN219355278U CN202320787334.2U CN202320787334U CN219355278U CN 219355278 U CN219355278 U CN 219355278U CN 202320787334 U CN202320787334 U CN 202320787334U CN 219355278 U CN219355278 U CN 219355278U
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- steam
- waste heat
- heat recovery
- recovery system
- reboiler
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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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- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The utility model relates to the technical field of rectification waste heat recovery, in particular to a rectification tower top waste heat recovery system; comprises a heat exchanger, a steam drum, a pressure control device, a pressurizing unit and a reboiler. According to the rectification tower top waste heat recovery system provided by the utility model, the heat exchanger, the steam drum, the pressure control device, the pressurizing unit and the reboiler are adopted, high-temperature gas phase distilled from the top of the rectification tower is sent into the heat exchanger for heat exchange, condensate in the heat exchanger is heated and vaporized to generate steam, the steam is sent into the steam drum, the pressure of the steam drum is controlled to be constant through the pressure control device, the steam drum is pressurized by the pressurizing unit after being sent out, so that the temperature is increased, the steam is sent into the reboiler for heat exchange, the condensed steam after heat exchange becomes liquid and then flows back to the steam drum, and then the steam drum is sent into the heat exchanger to form a condensate recycling system, so that the high-efficiency recovery of rectification tower top waste heat can be realized, cooling liquid (namely circulating water) can be saved, and energy conservation and consumption reduction are realized.
Description
Technical Field
The utility model relates to the technical field of rectification waste heat recovery, in particular to a rectification tower top waste heat recovery system.
Background
The rectifying tower is used as a common chemical device for reaction, purification and separation, and is used for separating liquid according to the rectifying principle, namely, under a certain pressure, the light component (namely, the component with lower boiling point or higher saturated vapor pressure) is vaporized by utilizing the difference of the boiling points or saturated vapor pressures of the components of the miscible liquid mixture. In an industrial device, the gas phase of a rectifying tower is usually cooled by circulating water to obtain a required light component condensate, the required light component condensate flows back to the top of the rectifying tower through a reflux pump, and components of a rectifying section are further separated through control of a reflux ratio and a top temperature to obtain a qualified product.
In a chemical device, rectification is used as a most common chemical operation unit, and a plurality of sets of rectification devices are commonly used in combination for purification or separation; the gas phase of one rectifying tower needs to be condensed by a large amount of circulating water or chilled water, and the reboiler of the other rectifying tower needs to be heated by a large amount of steam for the reboiler, so that a large amount of steam and circulating water are consumed.
Therefore, the utility model provides a rectification tower top waste heat recovery system.
Disclosure of Invention
Based on the above, it is necessary to provide a rectification column top waste heat recovery system in view of the above technical problems.
In order to achieve the above object, the technical scheme of the present utility model is as follows:
the utility model provides a rectifying column top waste heat recovery system, is including being used for the heat exchanger that is linked together with rectifying column top outlet, be used for carrying out waste heat recovery's steam pocket with the heat exchanger cooperation, be used for carrying out waste heat steam pressure regulation's with the steam pocket cooperation pressure control device, be used for carrying out waste heat steam supercharged pressure boost unit and be used for carrying out waste heat steam heat exchange condensation's reboiler with pressure boost unit cooperation, the reboiler still is linked together with rectifying column's bottom.
Preferably, the steam drum is provided with a steam condensate inlet.
Preferably, the pressure control device comprises a steam pressure gauge and a steam output control valve.
Preferably, the pressurizing unit is a steam pressurizing pump.
Preferably, the output end of the reboiler is also communicated with the input end of the steam drum, and the output end of the steam drum is also communicated with the input end of the heat exchanger.
The utility model has the advantages that: according to the rectification tower top waste heat recovery system provided by the utility model, the heat exchanger, the steam drum, the pressure control device, the pressurizing unit and the reboiler are adopted, high-temperature gas phase distilled from the top of the rectification tower is sent into the heat exchanger for heat exchange, condensate in the heat exchanger is heated and vaporized to generate steam, the steam is sent into the steam drum, the pressure of the steam drum is controlled to be constant through the pressure control device, the steam drum is pressurized by the pressurizing unit after being sent out, so that the temperature is increased, the steam is sent into the reboiler for heat exchange, the condensed steam after heat exchange becomes liquid and then flows back to the steam drum, and then the steam drum is sent into the heat exchanger to form a condensate recycling system, so that the high-efficiency recovery of rectification tower top waste heat can be realized, cooling liquid (namely circulating water) can be saved, and energy conservation and consumption reduction are realized.
Drawings
Fig. 1 is a schematic structural diagram of a rectification column top waste heat recovery system in an embodiment of the present utility model.
Reference numerals: 1 rectifying tower, 2 reboiler, 3 heat exchangers, 4 drum, 5 pressure control device, 6 steam booster pump.
Detailed Description
In order to make the objects, technical solutions and advantages of the present utility model more apparent, the present utility model will be further described in detail by the following detailed description with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.
Referring to fig. 1, a rectifying tower 11 top waste heat recovery system comprises a heat exchanger 3 communicated with an outlet of the top of the rectifying tower 1, a steam drum 4 matched with the heat exchanger 3 for waste heat recovery, a pressure control device 5 matched with the steam drum 4 for waste heat steam pressure adjustment, a pressurizing unit matched with the pressure control device 5 for waste heat steam pressurizing, and a reboiler 2 matched with the pressurizing unit for waste heat steam heat exchange condensation, wherein the reboiler 2 is also communicated with the bottom of the rectifying tower 1.
In this embodiment, the rectification column 1 top waste heat recovery system provided by the utility model consists of a rectification column 1, a heat exchanger 3, a steam drum 4, a pressure control device 5, a pressurizing unit and a reboiler 2 (the waste heat recovery system is applicable to materials with boiling points above 150 ℃ at the top of the column), wherein a safety relief valve is arranged between every two adjacent devices in the rectification column 1, the heat exchanger 3, the steam drum 4, the pressure control device 5, the pressurizing unit and the reboiler 2, so that the safety performance of a pipeline is conveniently ensured.
In this embodiment, the steam drum 4 is provided with a steam condensate inlet for inputting steam condensate into the steam drum 4.
In the present embodiment, the pressure control device 5 includes a steam pressure gauge and a steam output control valve.
In the present embodiment, the steam pressure gauge and the steam output control valve are provided to control the pressure in the steam drum 4 to be constant, so that the steam in the steam drum 4 is kept at a preset temperature and pressure.
In this embodiment, the booster unit is a vapor booster pump 6.
In this embodiment, by setting the steam booster pump 6, in the process of conveying steam from the steam drum 4 to the reboiler 2, the temperature and output pressure of the steam output from the steam drum 4 are low, which is insufficient for heat exchange of the reboiler 2, and the boosting effect of the steam booster pump 6 can be utilized to increase the temperature of the steam, so that the conveying steam meets the heat exchange requirement of the reboiler 2.
In this embodiment, the bottom of the rectifying column 1 is also in communication with a reboiler 2 for heating the liquid mixture at the bottom of the rectifying column 1.
In this embodiment, the output of the reboiler 2 is also in communication with the input of the drum 4, said drum 4 output being also in communication with the input of the heat exchanger 3.
The working process of the utility model is as follows:
the high-temperature gas phase distilled from the top of the rectifying tower 1 is sent into a heat exchanger 3 for heat exchange, condensate in the heat exchanger 3 is heated and vaporized to generate steam, the steam condensate is changed into steam with certain temperature and pressure, then the steam condensate is sent into a steam drum 4 (the steam condensate in the steam drum 4 is from other heat exchange devices when the steam drum 4 is just started), the pressure of the steam drum 4 can be controlled to be constant through the action of a steam pressure gauge and a steam output control valve, so that the steam in the steam drum 4 keeps certain temperature and pressure, then the steam sent out from the steam drum 4 can be subjected to supercharging treatment through a steam booster pump 6, the steam pressure and temperature can be increased, the steam is sent into a reboiler 2 for heat exchange, the condensed steam after heat exchange becomes liquid and then flows back into the steam drum 4, the steam drum 4 is sent into the heat exchanger 3 for recycling, and meanwhile, the liquid mixture at the bottom of the rectifying tower 1 can be heated by the reboiler 2.
It will be apparent to those skilled in the art that the various step embodiments of the utility model described above may be performed in ways other than those described herein, including but not limited to simulation methods and experimental apparatus described above. The steps of the utility model described above may in some cases be performed in a different order than that shown or described above, and may be performed separately. Therefore, the present utility model is not limited to any specific combination of hardware and software.
The foregoing is a further detailed description of the utility model in connection with specific embodiments, and is not intended to limit the practice of the utility model to such descriptions. It will be apparent to those skilled in the art that several simple deductions or substitutions may be made without departing from the spirit of the utility model, and these should be considered to be within the scope of the utility model.
Claims (5)
1. The utility model provides a rectifying column top waste heat recovery system, its characterized in that includes the heat exchanger that is used for being linked together with rectifying column tower top outlet, is used for carrying out waste heat recovery's steam pocket with the heat exchanger cooperation, is used for carrying out waste heat steam pressure regulation's pressure control device with the steam pocket cooperation, is used for carrying out waste heat steam supercharging's booster unit with the pressure control device cooperation and is used for carrying out waste heat steam heat exchange condensation's reboiler with the booster unit cooperation, the reboiler still is linked together with rectifying column's bottom.
2. The rectifying column top waste heat recovery system according to claim 1, wherein a steam condensate inlet is arranged on the steam drum.
3. The rectifying column top waste heat recovery system of claim 1, wherein said pressure control means comprises a vapor pressure gauge and a vapor output control valve.
4. The rectifying column top waste heat recovery system according to claim 1, wherein the pressurizing unit is a vapor booster pump.
5. The rectifying column overhead heat recovery system of claim 1 wherein the reboiler output is further in communication with an input of a drum, the drum output being further in communication with an input of a heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320787334.2U CN219355278U (en) | 2023-04-11 | 2023-04-11 | Rectifying column top waste heat recovery system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320787334.2U CN219355278U (en) | 2023-04-11 | 2023-04-11 | Rectifying column top waste heat recovery system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219355278U true CN219355278U (en) | 2023-07-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320787334.2U Active CN219355278U (en) | 2023-04-11 | 2023-04-11 | Rectifying column top waste heat recovery system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219355278U (en) |
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2023
- 2023-04-11 CN CN202320787334.2U patent/CN219355278U/en active Active
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