CN214075121U - Coupling rectifying tower system - Google Patents
Coupling rectifying tower system Download PDFInfo
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- CN214075121U CN214075121U CN202022520538.9U CN202022520538U CN214075121U CN 214075121 U CN214075121 U CN 214075121U CN 202022520538 U CN202022520538 U CN 202022520538U CN 214075121 U CN214075121 U CN 214075121U
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Abstract
The utility model discloses a coupling rectifying tower system, which comprises a first coupling rectifying tower, a first reboiler, a first pressure gauge, a second coupling rectifying tower, a second pressure gauge, a second reboiler, a reflux tank and a condenser; the first reboiler is connected with the first coupling rectifying tower, a first loop is formed between the first reboiler and the first coupling rectifying tower, the second reboiler is connected with the second coupling rectifying tower, a second loop is formed between the second reboiler and the second coupling rectifying tower, and the first reboiler is further sequentially connected with the condenser, the reflux tank and the second coupling rectifying tower so that a liquid phase material obtained after condensation by the condenser enters the second coupling rectifying tower; the second coupling rectifying tower is also connected with the first reboiler, and the second coupling rectifying tower is also directly connected with the first coupling rectifying tower. The utility model provides a coupling rectifying column system, simple structure, pressure regulation and control easy operation and effectual.
Description
Technical Field
The utility model relates to a coupling rectifying column, in particular to coupling rectifying column system belongs to rectifying column technical field.
Background
Rectification is one of the most widely used and technically mature separation methods in the field of petrochemical industry, and occupies a considerable proportion in industrial production. In order to increase economic benefits and reduce production costs, energy-saving technologies are continuously proposed in the rectification process, including the application of coupling energy-saving technologies, namely coupling rectification towers. Compared with the conventional rectifying tower, the coupling rectifying tower can greatly reduce energy consumption, and compared with the conventional rectifying tower, the coupling rectifying tower can save about 40 percent of energy.
The tower pressure of the coupling rectifying tower and the pressure operation process of the reflux tank are affected by single components and large load to generate periodic large-amplitude fluctuation, and the pressure reduction causes the following problems: 1) the reflux quantity is reduced, the liquid level of the reflux tank is quickly increased, and the temperature of the reflux liquid is higher due to insufficient condensation of materials; 2) the normal operation of a reflux pump can be influenced by the high temperature and the fluctuation of reflux quantity of reflux liquid, and the rectification effect can be influenced by influencing the gas-liquid phase balance in the tower; 3) the pressure fluctuation of the reflux tank of the coupling tower causes the heat exchange area change of a reboiler of the first coupling tower, and the tower pressure fluctuates periodically.
CN 105344127A discloses a rectifying tower system and a method and a device for stabilizing the tower pressure of the rectifying tower, wherein the method and the device realize the controlled release of the pressure by arranging a nitrogen supplement adjusting device; in the method, part of nitrogen is dissolved into a separated product, and the subsequent process needs to be separated again; on the other hand, the pressure of the reflux tank and the tower pressure rapidly rise after the undissolved nitrogen is heated, so that the pressure is greatly fluctuated; in addition, there is a method for controlling the tower pressure by manually adjusting the opening of the lower liquid valve according to the fluctuation condition of the tower pressure, however, in the method, the fluctuation of the tower pressure lags behind the pressure of the reflux tank, the manual control operation is frequent and has a large difference according to the personal operation habit.
SUMMERY OF THE UTILITY MODEL
The main object of the utility model is to provide a coupling rectifying column system to overcome not enough among the prior art.
For realizing the purpose of the utility model, the utility model discloses a technical scheme include:
the embodiment of the utility model provides a coupling rectifying tower system, which comprises a first coupling rectifying tower (1), a first reboiler (2), a first pressure gauge (3), a second coupling rectifying tower (5), a second pressure gauge (6), a second reboiler (15), a reflux tank (10) and a condenser (12);
the first reboiler (2) is connected with the first coupling rectifying tower (1), a first loop for material circulation flow is formed between the first reboiler (2) and the first coupling rectifying tower (1), the second reboiler (15) is connected with the second coupling rectifying tower (5), and a second loop for material circulation flow is formed between the second reboiler (15) and the second coupling rectifying tower (5), wherein the first pressure gauge (3) is connected with the first coupling rectifying tower (1) and is at least used for monitoring the pressure inside the first coupling rectifying tower (1), and the second pressure gauge (6) is connected with the second coupling rectifying tower (5) and is at least used for monitoring the pressure inside the second coupling rectifying tower (5);
the first reboiler (2) is also sequentially connected with a condenser (12), a reflux tank (10) and a second coupling rectifying tower (5) so that a liquid phase material obtained after condensation by the condenser (12) enters the second coupling rectifying tower (5); the second coupling rectifying tower (5) is also connected with the first reboiler (2), and the second coupling rectifying tower (5) is also directly connected with the first coupling rectifying tower (1).
Further, the coupled rectifying column system comprises: the system comprises a first coupling rectifying tower (1), a first reboiler (2), a first pressure gauge (3), a first thermometer (4), a second coupling rectifying tower (5), a second pressure gauge (6), a reflux flowmeter (7), a second thermometer (9), a second reboiler (15), a reflux tank (10), a condenser (12), a third pressure gauge (14) and a controller (11);
the first reboiler (2) is connected with the first coupling rectifying tower (1) to form a first loop, and the second reboiler (15) is connected with the second coupling rectifying tower (5) to form a second loop; the first coupling rectifying tower (1), the first reboiler (2), the condenser (12), the reflux tank (10), the second coupling rectifying tower (5) and the first reboiler (2) are sequentially connected to form a third loop for material circulation;
wherein, first manometer (3) set up the top of the tower of first coupling rectifying column (1), second manometer (6) set up the top of the tower of second coupling rectifying column (5), third manometer (14) set up on reflux drum (10), first thermometer (4) set up on the connecting pipeline between first reboiler (2) and condenser (12), lower liquid valve (13) set up on the connecting pipeline between condenser (12) and reflux drum (10), reflux flow meter (7), second thermometer (9) set up on the connecting pipeline between reflux drum (10) and second coupling rectifying column (5), just controller (11) still respectively with first thermometer (4), lower liquid valve (13) are connected.
Compared with the prior art, the utility model has the advantages that:
1) the embodiment of the utility model provides a coupling rectifying tower system, simple structure, simple operation of pressure regulation and control and good effect;
2) the embodiment of the utility model provides a pair of coupling rectifying column system can make coupling rectifying column tower pressure and reflux drum pressure fluctuation range reduce, has reduced the fluctuation range of temperature in the reflux drum to and reduced the flow fluctuation range in the backwash pump exit that is connected with the reflux drum, thereby realized the accurate regulation and control to coupling rectifying column tower pressure.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic structural diagram of a coupled rectifying column system provided in an exemplary embodiment of the present invention.
Detailed Description
In view of the deficiencies in the prior art, the inventor of the present invention has made extensive studies and practices to provide the technical solution of the present invention. The technical solution, its implementation and principles, etc. will be further explained as follows.
The embodiment of the utility model provides a coupling rectifying tower system, which comprises a first coupling rectifying tower (1), a first reboiler (2), a first pressure gauge (3), a second coupling rectifying tower (5), a second pressure gauge (6), a second reboiler (15), a reflux tank (10) and a condenser (12);
the first reboiler (2) is connected with the first coupling rectifying tower (1), a first loop for material circulation flow is formed between the first reboiler (2) and the first coupling rectifying tower (1), the second reboiler (15) is connected with the second coupling rectifying tower (5), and a second loop for material circulation flow is formed between the second reboiler (15) and the second coupling rectifying tower (5), wherein the first pressure gauge (3) is connected with the first coupling rectifying tower (1) and is at least used for monitoring the pressure inside the first coupling rectifying tower (1), and the second pressure gauge (6) is connected with the second coupling rectifying tower (5) and is at least used for monitoring the pressure inside the second coupling rectifying tower (5);
the first reboiler (2) is also sequentially connected with a condenser (12), a reflux tank (10) and a second coupling rectifying tower (5) so that a liquid phase material obtained after condensation by the condenser (12) enters the second coupling rectifying tower (5); the second coupling rectifying tower (5) is also connected with the first reboiler (2), and the second coupling rectifying tower (5) is also directly connected with the first coupling rectifying tower (1).
Furthermore, a first thermometer (4) is arranged on a connecting pipeline between the first reboiler (2) and the condenser (12), and the first thermometer (4) is at least used for monitoring the temperature of materials in the connecting pipeline.
Furthermore, a liquid discharging valve (13) is further arranged on a connecting pipeline between the condenser (12) and the reflux tank (10), and the liquid discharging valve (13) is at least used for opening and closing the connecting pipeline.
Further, the coupled rectifying tower system further comprises a controller (11), and the controller (11) is connected with the first thermometer (4) and the liquid discharge valve (13).
Furthermore, a reflux pump (8) is further arranged on a connecting pipeline between the reflux tank (10) and the second coupling rectifying tower (5), and the reflux pump (8) is at least used for pumping the liquid-phase medium in the reflux tank (10) into the second coupling rectifying tower (5).
Furthermore, a second temperature meter (9) is further arranged on a connecting pipeline between the reflux tank (10) and the second coupling rectifying tower (5), and the second temperature meter (9) is at least used for monitoring the temperature of materials in the connecting pipeline.
Furthermore, a reflux flow meter (7) is further arranged on a connecting pipeline between the reflux tank (10) and the second coupling rectifying tower (5), the reflux flow meter (7) is located in a region, close to the second coupling rectifying tower (5), of the connecting pipeline, and the reflux flow meter (7) is at least used for monitoring the flow of materials input into the second coupling rectifying tower (5) from the reflux tank (10).
Further, the return tank (10) is further connected with a third pressure gauge (14), and the third pressure gauge (14) is at least used for monitoring the pressure in the return tank (10).
Furthermore, a connecting pipeline between the first coupling rectifying tower (1) and the second coupling rectifying tower (5) is also provided with a delivery pump (16), and the delivery pump (16) is at least used for pumping the material in the first coupling rectifying tower (1) into the second coupling rectifying tower (5).
Further, the coupled rectifying column system comprises: the system comprises a first coupling rectifying tower (1), a first reboiler (2), a first pressure gauge (3), a first thermometer (4), a second coupling rectifying tower (5), a second pressure gauge (6), a reflux flowmeter (7), a second thermometer (9), a second reboiler (15), a reflux tank (10), a condenser (12), a third pressure gauge (14) and a controller (11);
the first reboiler (2) is connected with the first coupling rectifying tower (1) to form a first loop, and the second reboiler (15) is connected with the second coupling rectifying tower (5) to form a second loop; the first coupling rectifying tower (1), the first reboiler (2), the condenser (12), the reflux tank (10), the second coupling rectifying tower (5) and the first reboiler (2) are sequentially connected to form a third loop for material circulation;
wherein, first manometer (3) set up the top of the tower of first coupling rectifying column (1), second manometer (6) set up the top of the tower of second coupling rectifying column (5), third manometer (14) set up on reflux drum (10), first thermometer (4) set up on the connecting pipeline between first reboiler (2) and condenser (12), lower liquid valve (13) set up on the connecting pipeline between condenser (12) and reflux drum (10), reflux flow meter (7), second thermometer (9) set up on the connecting pipeline between reflux drum (10) and second coupling rectifying column (5), just controller (11) still respectively with first thermometer (4), lower liquid valve (13) are connected.
The technical solution, the implementation process and the principle thereof will be further explained with reference to the drawings.
Referring to fig. 1, a coupled rectifying column system includes: the system comprises a first coupling rectifying tower 1, a first reboiler 2, a first pressure gauge 3, a first temperature gauge 4, a second coupling rectifying tower 5, a second pressure gauge 6, a reflux flow meter 7, a second temperature gauge 9, a second reboiler 15, a reflux tank 10, a condenser 12, a third pressure gauge 14 and a controller 11:
the first reboiler 2 is connected with the first coupling rectifying tower 1 to form a first loop, and the second reboiler 15 is connected with the second coupling rectifying tower 5 to form a second loop; the first coupling rectifying tower 1, the first reboiler 2, the condenser 12, the reflux tank 10, the second coupling rectifying tower 5 and the first reboiler 2 are sequentially connected to form a third loop for material circulation;
wherein, first manometer 3 sets up the top of the tower of first coupling rectifying column 1, second manometer 6 sets up the top of the tower of second coupling rectifying column 5, third manometer 14 sets up on reflux drum 10, first thermometer 4 sets up on the connecting pipeline between first reboiler 2 and condenser 12, lower liquid valve 13 sets up on the connecting pipeline between condenser 12 and reflux drum 10, reflux flowmeter 7, second thermometer 9 set up on the connecting pipeline between reflux drum 10 and the second coupling rectifying column 5, just controller 11 still respectively with first thermometer 4, lower liquid valve 13 are connected.
Specifically, a reflux pump 8 is further arranged on a connecting pipeline between the reflux tank 10 and the second coupling rectifying tower 5, and the reflux pump 8 is at least used for pumping the liquid-phase medium in the reflux tank 10 into the second coupling rectifying tower 5; a connecting pipeline between the first coupling rectifying tower 1 and the second coupling rectifying tower 5 is also provided with a delivery pump 16, and the delivery pump 16 is at least used for pumping the material in the first coupling rectifying tower 1 into the second coupling rectifying tower 5.
Specifically, a material outlet of the first coupling rectifying tower 1 is arranged at the bottom of the tower, a material inlet is arranged in the middle upper area of the tower, a material outlet of the second coupling rectifying tower 5 connected with the first reboiler 2 is arranged at the top of the tower, a material inlet of the second coupling rectifying tower 5 connected with the reflux tank 10 is arranged in the upper area of the second coupling rectifying tower, the first reboiler 2 is further connected with the condenser 12, and materials in the first reboiler 2 enter the reflux tank 10 through the lower liquid valve 13.
Specifically, the working principle of the coupled rectifying column system at least lies in that:
when the pressure of the second coupling rectifying tower 5 and the reflux tank 10 is reduced, the heat exchange area of the first reboiler 2 connected with the first coupling rectifying tower 1 begins to increase, the temperature at the material outlet of the first reboiler 2 rises, namely the temperature reading on the first thermometer 4 rises, and the controller 11 adjusts the working state of the lower liquid valve 13 according to the received information, namely the lower liquid valve is closed; when the heat exchange area of the first reboiler 2 starts to approach to the normal value by adjusting the lower liquid valve 13, the shell-side outlet temperature decreases, that is, the temperature reading on the first thermometer 4 decreases to the preset value, the first thermometer 4 feeds back the temperature information to the controller 11, and the controller 11 adjusts the lower liquid valve 13 (i.e., opens the lower liquid valve) and allows the allowable flow rate to increase again.
It should be noted that, the embodiment of the present invention provides a coupling rectifying tower system in which components such as coupling rectifying tower, pressure gauge, thermometer and the like are available through market purchase, and there is no specific limitation to its specific structure, the present invention adopts a controller such as a PLC controller, wherein the adopted control program can be obtained through market purchase.
The embodiment of the utility model provides a coupling rectifying tower system, simple structure, simple operation of pressure regulation and control and good effect; the embodiment of the utility model provides a pair of coupling rectifying column system can make coupling rectifying column tower pressure and reflux drum pressure fluctuation range reduce, reduces the fluctuation range of temperature in the reflux drum to and reduced the flow fluctuation range in the backwash pump exit that is connected with the reflux drum, thereby realized the accurate regulation and control to coupling rectifying column tower pressure.
It should be understood that the above-mentioned embodiments are merely illustrative of the technical concepts and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and to implement the present invention, and therefore, the protection scope of the present invention should not be limited thereby. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A coupling rectifying tower system is characterized by comprising a first coupling rectifying tower (1), a first reboiler (2), a first pressure gauge (3), a second coupling rectifying tower (5), a second pressure gauge (6), a second reboiler (15), a reflux tank (10) and a condenser (12);
the first reboiler (2) is connected with the first coupling rectifying tower (1), a first loop for material circulation flow is formed between the first reboiler (2) and the first coupling rectifying tower (1), the second reboiler (15) is connected with the second coupling rectifying tower (5), and a second loop for material circulation flow is formed between the second reboiler (15) and the second coupling rectifying tower (5), wherein the first pressure gauge (3) is connected with the first coupling rectifying tower (1) and is at least used for monitoring the pressure inside the first coupling rectifying tower (1), and the second pressure gauge (6) is connected with the second coupling rectifying tower (5) and is at least used for monitoring the pressure inside the second coupling rectifying tower (5);
the first reboiler (2) is also sequentially connected with a condenser (12), a reflux tank (10) and a second coupling rectifying tower (5) so that a liquid phase material obtained after condensation by the condenser (12) enters the second coupling rectifying tower (5); the second coupling rectifying tower (5) is also connected with the first reboiler (2), and the second coupling rectifying tower (5) is also directly connected with the first coupling rectifying tower (1).
2. The coupled rectifier column system of claim 1, wherein: a first thermometer (4) is arranged on a connecting pipeline between the first reboiler (2) and the condenser (12), and the first thermometer (4) is at least used for monitoring the temperature of materials in the connecting pipeline.
3. The coupled rectifier column system of claim 2, wherein: still be provided with down liquid valve (13) on the connecting line between condenser (12) and reflux drum (10), down liquid valve (13) are used for opening and close at least connecting line.
4. The coupled rectifying column system according to claim 3, further comprising a controller (11), wherein the controller (11) is connected with the first thermometer (4) and a lower liquid valve (13).
5. The coupled rectifier column system of claim 2, wherein: and a reflux pump (8) is further arranged on a connecting pipeline between the reflux tank (10) and the second coupling rectifying tower (5), and the reflux pump (8) is at least used for pumping the liquid phase medium in the reflux tank (10) into the second coupling rectifying tower (5).
6. The coupled rectifier column system of claim 5, wherein: and a second thermometer (9) is also arranged on a connecting pipeline between the reflux tank (10) and the second coupling rectifying tower (5), and the second thermometer (9) is at least used for monitoring the temperature of materials in the connecting pipeline.
7. The coupled rectifier column system of claim 5, wherein: a reflux flowmeter (7) is further arranged on a connecting pipeline between the reflux tank (10) and the second coupling rectifying tower (5), the reflux flowmeter (7) is located in an area, close to the second coupling rectifying tower (5), of the connecting pipeline, and the reflux flowmeter (7) is at least used for monitoring the flow of materials in the second coupling rectifying tower (5) input from the reflux tank (10).
8. The coupled rectifier column system of claim 1, wherein: the backflow tank (10) is further connected with a third pressure gauge (14), and the third pressure gauge (14) is at least used for monitoring the pressure in the backflow tank (10).
9. The coupled rectifier column system of claim 1, wherein: and a conveying pump (16) is further arranged on a connecting pipeline between the first coupling rectifying tower (1) and the second coupling rectifying tower (5), and the conveying pump (16) is at least used for pumping the materials in the first coupling rectifying tower (1) into the second coupling rectifying tower (5).
10. The coupled rectifier column system of claim 4, comprising: the system comprises a first coupling rectifying tower (1), a first reboiler (2), a first pressure gauge (3), a first thermometer (4), a second coupling rectifying tower (5), a second pressure gauge (6), a reflux flowmeter (7), a second thermometer (9), a second reboiler (15), a reflux tank (10), a condenser (12), a third pressure gauge (14) and a controller (11);
the first reboiler (2) is connected with the first coupling rectifying tower (1) to form a first loop, and the second reboiler (15) is connected with the second coupling rectifying tower (5) to form a second loop; the first coupling rectifying tower (1), the first reboiler (2), the condenser (12), the reflux tank (10), the second coupling rectifying tower (5) and the first reboiler (2) are sequentially connected to form a third loop for material circulation;
wherein, first manometer (3) set up the top of the tower of first coupling rectifying column (1), second manometer (6) set up the top of the tower of second coupling rectifying column (5), third manometer (14) set up on reflux drum (10), first thermometer (4) set up on the connecting pipeline between first reboiler (2) and condenser (12), lower liquid valve (13) set up on the connecting pipeline between condenser (12) and reflux drum (10), reflux flow meter (7), second thermometer (9) set up on the connecting pipeline between reflux drum (10) and second coupling rectifying column (5), just controller (11) still respectively with first thermometer (4), lower liquid valve (13) are connected.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022520538.9U CN214075121U (en) | 2020-11-04 | 2020-11-04 | Coupling rectifying tower system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022520538.9U CN214075121U (en) | 2020-11-04 | 2020-11-04 | Coupling rectifying tower system |
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| CN214075121U true CN214075121U (en) | 2021-08-31 |
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| CN202022520538.9U Active CN214075121U (en) | 2020-11-04 | 2020-11-04 | Coupling rectifying tower system |
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| CN (1) | CN214075121U (en) |
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