Fractionation temperature control device

Abstract

The utility model relates to temperature control device technical field especially a fractionation temperature control device, including base, the top of base is installed fractionation tower through the support leg, the side of fractionation tower is installed feed pipe, and install several discharge pipes on the other side of fractionation tower, the top of fractionation tower still is installed gas pipe, the top of base is installed conveying pump, the feed inlet department of conveying pump is installed first discharge pipe, the top of first discharge pipe is linked with the bottom of fractionation tower, the discharge port department of conveying pump is connected with second discharge pipe, the other end of second discharge pipe is fixed on the side of shell, and the shell is fixed on base. The application can wrap up the outer surface of second discharge pipe and feeding pipe through heat shield and heat preservation pad, so that the oil liquid conveyed in second discharge pipe and the steam heat conveyed in feeding pipe will not be quickly lost to the external environment, which can improve the temperature control precision of crude oil fractionation and improve the use effect.

Description

Technical Field

[0001] This utility model relates to the field of temperature control device technology, and in particular to a fractionation temperature control device. Background Technology

[0002] The fractionation temperature control device is a device for controlling the temperature of the slurry oil in a fractionation tower. This device can independently control the temperature at the top of the herringbone baffle and the bottom of the tower, thereby achieving precise regulation of the slurry oil temperature.

[0003] Existing fractionation temperature control devices typically transport the oil deposited at the bottom of the fractionation tower to a steam generator for heating, then through pipelines to the upper and lower return tower lines, and finally to a preset position within the fractionation tower to regulate the temperature. However, during operation, a significant amount of heat from the oil and steam is lost to the surrounding environment during transport to the steam generator and the subsequent transport of the heated oil vapor through the pipelines to the upper and lower return tower lines. This negatively impacts temperature control and results in poor performance. Furthermore, the high-temperature flue gas generated by the steam generator is directly discharged into waste gas treatment equipment, wasting its heat and further contributing to the poor performance. Therefore, we propose a fractionation temperature control device. Utility Model Content

[0004] The purpose of this invention is to address the aforementioned shortcomings in the existing technology by proposing a fractionation temperature control device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a fractionation temperature control device is designed, including a base, a fractionation tower is installed on the top of the base via support legs, a feed pipe is installed on one side of the fractionation tower, and several discharge pipes are installed on the other side of the fractionation tower, and an exhaust pipe is also installed on the top of the fractionation tower; a conveying pump is installed on the top of the base, a first discharge pipe is installed at the feed inlet of the conveying pump, the top of the first discharge pipe is connected to the bottom of the fractionation tower, a second discharge pipe is connected at the discharge outlet of the conveying pump, and the other end of the second discharge pipe is fixed to the side of the outer shell, and the outer shell is fixed on the base;

[0006] The shell contains several layers of heat exchange tubes stacked inside, and the two adjacent layers of heat exchange tubes are connected end to end. The end of the second discharge tube is connected to the end of the heat exchange tube at the bottom layer. A feeding tube is installed at one end of the heat exchange tube at the top layer. The top of the feeding tube penetrates the shell, and a furnace cavity is provided on one side of the shell.

[0007] The feed pipe is connected to the upper return tower pipeline and the lower return tower pipeline at its end. The other end of the upper return tower pipeline is fixed to the upper side of the fractionation tower, and the other end of the lower return tower pipeline is fixed to the bottom side of the fractionation tower. Both the upper return tower pipeline and the lower return tower pipeline are equipped with electrically controlled valves.

[0008] Both ends of the fractionation column are equipped with sealing covers. The upper and lower sides of the fractionation column are provided with installation grooves. The installation grooves are located inside the sealing covers and penetrate through the side wall of the fractionation column. A temperature sensor is installed inside each installation groove.

[0009] Mounting plates are installed on both sides of the feeding pipe and the second discharge pipe. A heat insulation cover is installed between each pair of mounting plates. An insulation pad is installed inside each heat insulation cover. The insulation pads are wrapped around the surface of the corresponding second discharge pipe and the feeding pipe.

[0010] Each heat insulation hood is equipped with a flue pipe inside. One end of the flue pipe is connected to a guide pipe and a flue pipe. The other end of the flue pipe passes through the heat insulation hood and is connected to the furnace cavity. The other end of the guide pipe is connected to one end of another flue pipe. The ends of the two flue pipes away from the guide pipe are connected through a flue pipe. One end of the flue pipe extends to the outside of the heat insulation hood.

[0011] Preferably, the insulation pad is made of aerogel felt material.

[0012] Preferably, the side of the insulation pad is provided with a receiving groove that matches the smoke guide pipe, and the smoke guide pipe is located in the corresponding receiving groove.

[0013] Preferably, the smoke guide pipe is arranged in a spiral.

[0014] Preferably, each heat exchange tube layer is arranged in an "S" shape or a serpentine shape.

[0015] Preferably, a sealing groove is provided at one end of the fractionation tower near the installation groove, and a heat-conducting plate is installed inside the sealing groove. The heat-conducting plate covers the opening of the installation groove and is sealed to the installation groove, and one side of the temperature sensor is in contact with the side of the heat-conducting plate.

[0016] Preferably, a control cabinet is installed on the top of the base, and the controller inside the control cabinet is connected to the temperature sensor, the electric control valve and the delivery pump through wires.

[0017] The design scheme proposed in this utility model has the following beneficial effects in application:

[0018] 1. The outer surfaces of the second discharge pipe and the feed pipe can be wrapped with heat insulation covers and heat insulation pads, so that the heat of the oil transported in the second discharge pipe and the steam transported in the feed pipe will not be quickly lost to the external environment. This can improve the temperature control accuracy of crude oil fractionation and improve the performance.

[0019] 2. The high-temperature flue gas in the furnace cavity can be transferred to the two flue pipes through the flue pipe and the guide pipe. Under the action of the flue pipe, the heat in the high-temperature flue gas can preheat the oil in the second discharge pipe and keep the steam in the feeding pipe warm, thereby improving the heat utilization rate and improving the use effect. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ;

[0021] Figure 2 This is a front view of the structure of this utility model;

[0022] Figure 3 This is a front sectional view of the outer shell structure of this utility model;

[0023] Figure 4 This is a partial sectional view of the front of the distillation tower structure of this utility model;

[0024] Figure 5 This is a side sectional view of the feeding pipe and heat insulation cover structure of this utility model.

[0025] In the diagram: 1. Base; 2. Control cabinet; 3. Support leg; 4. Feed pipe; 5. Discharge pipe; 6. Sealing cover; 7. Fractionating tower; 8. Exhaust pipe; 9. Upper return tower pipeline; 10. Smoke exhaust pipe; 11. Heat insulation cover; 12. Lower return tower pipeline; 13. Guide pipe; 14. Mounting plate; 15. Smoke outlet pipe; 16. Outer shell; 17. Electrically controlled valve; 18. Conveyor pump; 19. First discharge pipe; 20. Second discharge pipe; 21. Feeding pipe; 22. Furnace cavity; 23. Heat exchanger tube; 24. Mounting groove; 25. Temperature sensor; 26. Heat conduction; 27. Sealing groove; 28. Smoke guide pipe; 29. ​​Insulation pad; 30. Receiving groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] Reference Figures 1-5 A fractionation temperature control device includes a base 1, a control cabinet 2 installed on the top of the base 1, and a controller inside the control cabinet 2. The controller is one of a control motherboard, a host, or a PLC logic controller.

[0028] like Figure 1As shown, a fractionation tower 7 is installed on the top of the base 1 via support legs 3. A feed pipe 4 is installed on one side of the fractionation tower 7, and several discharge pipes 5 are installed on the other side of the fractionation tower 7. An exhaust pipe 8 is also installed on the top of the fractionation tower 7. In actual use, heated crude oil can be transported into the fractionation tower 7 through the feed pipe 4. Under different temperatures, different components in the crude oil can be discharged through the corresponding discharge pipes 5, thus completing the fractionation.

[0029] like Figure 1 and Figure 2 As shown, a delivery pump 18 is installed on the top of the base 1. A first discharge pipe 19 is installed at the inlet of the delivery pump 18. The top of the first discharge pipe 19 is connected to the bottom of the fractionation tower 7. A second discharge pipe 20 is connected to the outlet of the delivery pump 18. The other end of the second discharge pipe 20 is fixed to the side of the outer casing 16. The outer casing 16 is fixed on the base 1. The delivery pump 18 is connected to the controller through a wire. In actual use, the oil deposited at the bottom of the fractionation tower 7 can be transported to the inside of the outer casing 16 for processing through the first discharge pipe 19 and the second discharge pipe 20 by the delivery pump 18.

[0030] like Figure 3 As shown, several layers of heat exchange tubes 23 are stacked inside the outer shell 16, and adjacent layers of heat exchange tubes 23 are connected end to end. The end of the second discharge pipe 20 is connected to the end of the lowest heat exchange tube 23. A feeding pipe 21 is installed at one end of the highest heat exchange tube 23. The top of the feeding pipe 21 penetrates the outer shell 16. A furnace chamber 22 is provided on one side of the inner shell 16. In actual use, the operator can add fuel into the furnace chamber 22 for combustion. In actual use, the delivery pump 18 delivers oil to the heat exchange tubes 23. The heat generated by the combustion of fuel will heat the oil in the heat exchange tubes 23, causing the oil to vaporize. The vaporized oil is then delivered to the feeding pipe 21.

[0031] like Figure 1 and Figure 4 As shown, sealing covers 6 are installed at both lower ends of the fractionation column 7. Installation grooves 24 are opened on the upper and lower sides of the fractionation column 7. The installation grooves 24 are located inside the sealing covers 6 and penetrate through the side wall of the fractionation column 7. A temperature sensor 25 is installed inside each installation groove 24. The temperature sensor 25 is connected to the controller through a wire. The temperature sensor 25 can detect the temperature inside the fractionation column 7 and transmit the detection data to the controller.

[0032] It should be noted that, as Figure 4As shown, a sealing groove 27 is provided at one end of the fractionation tower 7 near the mounting groove 24. A heat-conducting plate 26 is installed inside the sealing groove 27. The heat-conducting plate 26 covers the opening of the mounting groove 24 and is sealed to the mounting groove 24. One side of the temperature sensor 25 is in contact with the side of the heat-conducting plate 26. The heat-conducting plate 26 can separate the oil-gas mixture in the fractionation tower 7 from the temperature sensor 25, so that the temperature sensor 25 will not be contaminated or damaged by the oil. In addition, the heat-conducting plate 26 can transfer the temperature in the fractionation tower 7 to the temperature sensor 25 without affecting the detection of the temperature sensor 25.

[0033] like Figure 1 As shown, the feed pipe 21 is connected to the upper return tower line 9 and the lower return tower line 12 at its ends. The other end of the upper return tower line 9 is fixed to the upper side of the fractionation tower 7, and the other end of the lower return tower line 12 is fixed to the bottom side of the fractionation tower 7. Both the upper return tower line 9 and the lower return tower line 12 are equipped with electrically controlled valves 17. The electrically controlled valves 17 are connected to the controller via wires. In actual use, the controller receives data from the temperature sensor 25 and can control the opening size of the corresponding electrically controlled valves 17 as needed, thereby changing the steam flow rate delivered by the upper return tower line 9 or the lower return tower line 12. This keeps the temperature inside the fractionation tower 7 at a preset value, ensuring normal crude oil fractionation.

[0034] like Figure 1 and Figure 5 As shown, mounting plates 14 are installed on both sides of the feeding pipe 21 and the second discharge pipe 20. A heat insulation cover 11 is installed between each pair of mounting plates 14. An insulation pad 29 is installed inside each heat insulation cover 11. The insulation pad 29 is wrapped around the surface of the corresponding second discharge pipe 20 and feeding pipe 21. The insulation pad 29 is made of aerogel felt material. The insulation pad 29 can wrap the outer surface of the second discharge pipe 20 and the feeding pipe 21, reduce the heat loss rate of the steam inside the second discharge pipe 20 and the feeding pipe 21, and improve the heat preservation effect.

[0035] When necessary, such as Figure 5 As shown, there is a gap between the insulation pad 29 and the heat insulation cover 11, which forms an air insulation layer and increases the heat insulation effect.

[0036] like Figure 1 and Figure 5As shown, each heat insulation cover 11 is equipped with a smoke guide pipe 28 inside. One end of one smoke guide pipe 28 is connected to a guide pipe 13 and a smoke outlet pipe 15. The other end of the smoke outlet pipe 15 passes through the heat insulation cover 11 and is connected to the furnace cavity 22. The other end of the guide pipe 13 is connected to one end of another smoke guide pipe 28. The ends of the two smoke guide pipes 28 away from the guide pipe 13 are connected by a smoke exhaust pipe 10. One end of the smoke exhaust pipe 10 extends to the outside of the heat insulation cover 11. The high-temperature flue gas generated by fuel combustion inside the furnace cavity 22 can be transported to the two smoke guide pipes 28 through the smoke outlet pipe 15 and the guide pipe 13. The steam inside the second discharge pipe 20 and the feeding pipe 21 is heated by the smoke guide pipes 28, which can recover and utilize the heat of the flue gas and improve the utilization effect.

[0037] Specifically, in use, the heated crude oil is fed into the fractionation tower 7 via the feed pipe 4. Different components within the crude oil vaporize at different temperatures, and only the different components are discharged through their corresponding discharge pipes 5. The oil deposited at the bottom of the fractionation tower 7 is then pumped by the pump 18 through the first discharge pipe 19 and the second discharge pipe 20 to the heat exchange pipe 23. After being heated by fuel in the furnace chamber 22, it forms steam, which is then fed through the feed pipe 21. From there, it is fed through the feed pipe 21 to the upper return tower line 9 and the lower return tower line 12, and finally back into the fractionation tower 7 for circulating fractionation. During the fractionation process, the temperature sensor 25 inside the fractionation tower 7 monitors the temperature. When the temperature falls below a preset value... The controller controls the opening degree of the corresponding electronically controlled valve 17, thereby adjusting the flow rate of steam in the upper return tower pipeline 9 and the lower return tower pipeline 12, which in turn controls the temperature inside the fractionation tower 7. Furthermore, through the cooperation of the insulation pad 29 and the heat insulation cover 11, the oil in the second discharge pipe 20 and the feed pipe 21 can be insulated, reducing the rate at which temperature is lost to the external environment, thereby saving energy. During use, the high-temperature flue gas generated by fuel combustion in the furnace chamber 22 can be transported to the two guide pipes 28 through the flue pipe 15 and the guide pipe 13. The high-temperature flue gas can heat the oil in the second discharge pipe 20 and the feed pipe 21 through the guide pipes 28. The heated flue gas is then discharged to the external waste gas treatment equipment for treatment through the exhaust pipe 10.

[0038] Furthermore, such as Figure 5 As shown, the flue pipe 28 is spirally arranged, and the side of the insulation pad 29 is provided with a receiving groove 30 that matches the flue pipe 28. The flue pipe 28 is located in the corresponding receiving groove 30, which can increase the heating time of the flue gas and the steam inside the second discharge pipe 20 and the feeding pipe 21, and improve the thermal energy utilization efficiency.

[0039] Furthermore, such as Figure 3As shown, each heat exchange tube 23 is arranged in an "S" shape or a serpentine shape, which increases the length of the heat exchange tube 23 inside the furnace cavity 22, and the oil flowing inside the heat exchange tube 23 can be fully heated by the heat generated by fuel combustion.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A fractionation temperature control device, comprising a base (1), characterized in that: A distillation tower (7) is installed on the top of the base (1) via a support leg (3). A feed pipe (4) is installed on one side of the distillation tower (7), and several discharge pipes (5) are installed on the other side of the distillation tower (7). An exhaust pipe (8) is also installed on the top of the distillation tower (7). A delivery pump (18) is installed on the top of the base (1). A first discharge pipe (19) is installed at the inlet of the delivery pump (18). The top of the first discharge pipe (19) is connected to the bottom of the fractionation tower (7). A second discharge pipe (20) is connected at the outlet of the delivery pump (18). The other end of the second discharge pipe (20) is fixed to the side of the outer shell (16). The outer shell (16) is fixed on the base (1). The shell (16) has several layers of heat exchange tubes (23) stacked inside, and the two adjacent layers of heat exchange tubes (23) are connected end to end. The end of the second discharge tube (20) is connected to the end of the heat exchange tube (23) located at the bottom layer. A feeding tube (21) is installed at one end of the heat exchange tube (23) located at the top layer. The top of the feeding tube (21) penetrates the shell (16), and a furnace cavity (22) is provided on one side of the shell (16). The feed pipe (21) is connected to the upper return tower line (9) and the lower return tower line (12) respectively. The other end of the upper return tower line (9) is fixed to the upper side of the fractionation tower (7), and the other end of the lower return tower line (12) is fixed to the bottom side of the fractionation tower (7). Both the upper return tower line (9) and the lower return tower line (12) are equipped with electrically controlled valves (17). Both ends of the fractionation tower (7) are equipped with sealing covers (6), and both the upper and lower sides of the fractionation tower (7) are provided with mounting grooves (24). The mounting grooves (24) are located inside the sealing covers (6) and penetrate through the side wall of the fractionation tower (7). Each mounting groove (24) is equipped with a temperature sensor (25). Mounting plates (14) are installed on both sides of the feeding pipe (21) and the second discharge pipe (20). A heat insulation cover (11) is installed between each pair of mounting plates (14). A heat insulation pad (29) is installed inside each heat insulation cover (11). The heat insulation pad (29) is wrapped around the surface of the corresponding second discharge pipe (20) and feeding pipe (21). Each heat insulation cover (11) is equipped with a smoke guide pipe (28) inside. One end of the smoke guide pipe (28) is connected to a flow guide pipe (13) and a smoke outlet pipe (15). The other end of the smoke outlet pipe (15) passes through the heat insulation cover (11) and is connected to the furnace cavity (22). The other end of the flow guide pipe (13) is connected to one end of another smoke guide pipe (28). The ends of the two smoke guide pipes (28) away from the flow guide pipe (13) are connected through a smoke exhaust pipe (10). One end of the smoke exhaust pipe (10) extends to the outside of the heat insulation cover (11).

2. The fractionation temperature control device according to claim 1, characterized in that: The thermal pad (29) is made of aerogel felt material.

3. The fractionation temperature control device according to claim 2, characterized in that: The side of the heat insulation pad (29) is provided with a receiving groove (30) that matches the smoke guide pipe (28), and the smoke guide pipe (28) is located in the corresponding receiving groove (30).

4. The fractionation temperature control device according to claim 3, characterized in that: The smoke guide pipe (28) is spirally arranged.

5. The fractionation temperature control device according to claim 1, characterized in that: Each heat exchange tube (23) is arranged in an "S" shape or a serpentine shape.

6. The fractionation temperature control device according to claim 1, characterized in that: A sealing groove (27) is provided at one end of the fractionation tower (7) near the installation groove (24). A heat-conducting plate (26) is installed inside the sealing groove (27). The heat-conducting plate (26) covers the opening of the installation groove (24) and is sealed to the installation groove (24). One side of the temperature sensor (25) is in contact with the side of the heat-conducting plate (26).

7. A fractionation temperature control device according to claim 6, characterized in that: A control cabinet (2) is installed on the top of the base (1). The controller inside the control cabinet (2) is connected to the temperature sensor (25), the electric control valve (17) and the delivery pump (18) respectively through wires.

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