An integrated device for crude oil production and fractionation

Abstract

The utility model relates to petroleum exploitation technical field, and disclose a kind of crude oil exploitation and fractionation integrated device, including main pipe, the output end of main pipe is fixedly installed with heater, the surface of heater is sleeved with serpentine pipe, the input end of serpentine pipe is fixedly connected with pump machine, the input end of pump machine is fixedly connected with connecting pipe, the input end of connecting pipe is fixedly connected with water tank, the input end of water tank is fixedly connected with adapter pipe one, the input end of adapter pipe one is fixedly connected with preheating pipe.The utility model sets up serpentine pipe-pump machine-water tank-preheating pipe closed loop, the waste heat originally dissipated by heater outer wall is absorbed by cooling liquid in serpentine pipe in real time, and is forced to circulate to preheating pipe, and naphtha, aviation kerosene in light component oil pipe are preheated on line, reduce the fuel or steam consumption required for subsequent reheating, reach the effect of energy saving and consumption reduction, improve heat utilization rate.

Description

Technical Field

[0001] This utility model relates to the field of petroleum extraction technology, specifically to an integrated crude oil extraction and fractionation device. Background Technology

[0002] Crude oil is an unprocessed natural fossil fuel, mainly composed of hydrocarbons, and is a dark brown, viscous liquid. It is formed in underground sedimentary rock layers through long-term geological processes. As the lifeblood of modern industry, crude oil can be refined to produce various fuels such as gasoline, diesel, and aviation kerosene, as well as chemical raw materials. Its extraction involves drilling platforms and pipeline transportation.

[0003] In traditional crude oil processing, the waste heat at high-temperature positions in the heating furnace is difficult to recover due to the dispersed layout on site. It is often directly vented or used only for low-pressure steam, resulting in low energy utilization. At the same time, the temperature of light component oil exiting the tower is about 120°C, and the viscosity is still high. A separate heater is required to raise the temperature before it is transported out, which leads to repeated energy consumption, increased land occupation, and increased investment. Utility Model Content

[0004] To solve the above-mentioned technical problems, this utility model provides an integrated crude oil extraction and fractionation device, including a main pipe, a heater fixedly installed at the output end of the main pipe, a serpentine tube sleeved on the surface of the heater, a pump fixedly connected to the input end of the serpentine tube, a connecting pipe fixedly connected to the input end of the pump, a water tank fixedly connected to the input end of the connecting pipe, a transfer pipe one fixedly connected to the input end of the water tank, a preheating pipe fixedly connected to the input end of the transfer pipe one, a transfer pipe two fixedly connected to the input end of the preheating pipe, a primary distillation tower fixedly connected to the output end of the heater, an atmospheric distillation tower fixedly connected to the output end of the primary distillation tower, and a light component oil pipe fixedly connected to the output end of the atmospheric distillation tower.

[0005] The above technical solution involves setting up a closed-loop circuit of serpentine tube-pump-water tank-preheating tube, which allows the residual heat that would otherwise be lost from the outer wall of the heater to be absorbed in real time by the coolant in the serpentine tube and forced to circulate to the preheating tube, thereby preheating the naphtha and aviation kerosene in the light component oil pipe online.

[0006] As a further improvement to the above solution, the output end of the serpentine tube is fixedly connected to the input end of the adapter tube two.

[0007] Through the above technical solution, the output end of the serpentine tube is directly connected back to the second transfer tube, so that the coolant after heat absorption can enter the preheating tube to preheat the light component oil tube without bypassing or leakage.

[0008] As a further improvement to the above scheme, the preheating pipe is sleeved on the surface of the light component oil pipe.

[0009] Through the above technical solution, the preheating pipe is connected to the outer wall of the light component oil pipe to form a counter-current indirect heat exchange. The heat transfer path is short and the temperature difference is large. The light component oil can be heated at the outlet section, which reduces the subsequent external heating load and achieves the effect of further energy saving and preventing the light component from recondensing.

[0010] As a further improvement to the above scheme, both the serpentine tube and the preheating tube are made of metallic copper tubes.

[0011] Through the above technical solution, both the serpentine tube and the preheating tube are made of metal copper tubes. Copper's high thermal conductivity and good workability are utilized, and copper is resistant to corrosion from sulfur-containing light components, thus achieving the effect of enhancing heat transfer and extending service life.

[0012] As a further improvement to the above solution, a protective shell is fixedly connected to the surface of the main tube, and a mounting plate is fixedly connected to the surface of the protective shell.

[0013] Through the above technical solutions, the protective shell and mounting plate enclose the high-temperature section of the heater in a limited space, which not only prevents personnel from being burned but also reduces heat radiation loss. The mounting plate provides standard bolt interfaces, which improves operational safety and on-site installation convenience.

[0014] As a further improvement to the above solution, the heater is fitted inside the protective shell, and the mounting plate is fixedly connected to the mounting plate by bolts.

[0015] As a further improvement to the above solution, an inlet pipe is fixedly connected to the top of the water tank, a cap is threadedly connected to the top of the inlet pipe, and an outlet pipe is fixedly connected to the bottom of the water tank, with a valve installed inside the outlet pipe.

[0016] With the above technical solution, the top inlet pipe and bottom outlet pipe of the water tank are respectively equipped with caps and valves, which can complete the replenishment or discharge of coolant without stopping the machine, realize online maintenance of the cooling circuit, and achieve the effect of improving the reliability of continuous operation of the device.

[0017] As a further improvement to the above solution, the liquid inlet pipe penetrates the inner wall of the water tank.

[0018] With the above technical solution, the liquid inlet pipe extends through the inner wall of the water tank to below the liquid surface, avoiding splashing and air bubbles being drawn into the pump suction port during liquid replenishment.

[0019] Compared with the prior art, the beneficial effects of this utility model are:

[0020] This invention, by setting up a closed-loop circuit of serpentine tube-pump-water tank-preheating tube, absorbs the waste heat that was originally lost from the outer wall of the heater in real time by the coolant in the serpentine tube and forces it to circulate to the preheating tube, so as to preheat the naphtha and aviation kerosene in the light component oil pipe online, thereby reducing the fuel or steam consumption required for subsequent reheating, and achieving the effects of energy saving, consumption reduction and improved heat utilization.

[0021] This invention, by setting a preheating tube coaxially sleeved on the outer wall of the light component oil pipe and using high thermal conductivity copper pipe, heats up the light component oil immediately after it leaves the tower, reducing its viscosity and surface tension, thereby reducing the resistance of subsequent pipeline transportation and pumping power, achieving the effect of reducing operating power consumption and suppressing naphtha component recondensation loss. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is a schematic diagram of the overall connection structure of the pump body of this utility model;

[0024] Figure 3 This is a schematic diagram of the overall connection structure of the water tank of this utility model.

[0025] In the diagram: 1. Main pipe; 2. Heater; 3. Serpentine pipe; 4. Pump; 5. Connecting pipe; 6. Water tank; 7. Transfer pipe one; 8. Preheating pipe; 9. Transfer pipe two; 10. Primary distillation column; 11. Atmospheric column; 12. Light component oil pipe; 13. Protective shell; 14. Mounting plate; 15. Inlet pipe; 16. Cap; 17. Outlet pipe; 18. Valve. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0027] Example:

[0028] Please combine Figure 1-3This embodiment of an integrated crude oil extraction and fractionation device includes a main pipe 1, a heater 2 fixedly installed at the output end of the main pipe 1, a serpentine tube 3 sleeved on the surface of the heater 2, a pump 4 fixedly connected to the input end of the serpentine tube 3, a connecting pipe 5 fixedly connected to the input end of the pump 4, a water tank 6 fixedly connected to the input end of the connecting pipe 5, a transfer pipe 7 fixedly connected to the input end of the water tank 6, a preheating pipe 8 fixedly connected to the input end of the transfer pipe 7, a transfer pipe 9 fixedly connected to the input end of the preheating pipe 8, a primary distillation tower 10 fixedly connected to the output end of the heater 2, an atmospheric distillation tower 11 fixedly connected to the output end of the primary distillation tower 10, and a light component oil pipe 12 fixedly connected to the output end of the atmospheric distillation tower 11.

[0029] In use, crude oil is heated by heater 2 and then fractionated by primary distillation tower 10 and atmospheric distillation tower 11. The non-condensable gas at the top of primary distillation tower 10 and non-condensable gas at the top of atmospheric distillation tower 11 are combined and used as the heat transfer medium for the furnace in the unit. Light component oil with naphtha and aviation kerosene as the main components, as well as heavy components such as diesel oil in the middle of the tower and residue oil at the bottom of the tower are obtained from atmospheric distillation tower 11. The light component oil is discharged through light component oil pipe 12.

[0030] During preheating, pump 4 is started. The output of pump 4 draws the cooling liquid from inside water tank 6 into the serpentine tube 3, where it absorbs the heat and carries it to the second transfer tube 9. The heat then enters the preheating tube 8 through the second transfer tube 9 to preheat the light component oil output from the light component oil tube 12. This process absorbs the heat carried inside the preheating tube 8. The water that has absorbed the heat then enters the water tank 6 through the first transfer tube 7 for recycling.

[0031] The output end of the serpentine tube 3 is fixedly connected to the input end of the transfer tube 2 9. The output end of the serpentine tube 3 is directly connected back to the transfer tube 2 9, so that the coolant after heat absorption enters the preheating tube without bypass or leakage to preheat the light component oil tube 12.

[0032] The preheating tube 8 is sleeved on the surface of the light component oil pipe 12. The preheating tube 8 is sleeved on the outer wall of the light component oil pipe 12 to form a counter-current indirect heat exchange. The heat transfer path is short and the temperature difference is large. The light component oil can be heated in the outlet section, which reduces the subsequent external heating load.

[0033] Both the serpentine tube 3 and the preheating tube 8 are made of metallic copper tubes. Copper's high thermal conductivity and good machinability, along with its resistance to corrosion from sulfur-containing light components, achieve the effects of enhanced heat transfer and extended service life.

[0034] The surface of the main body is fixedly connected to a protective shell 13, and the surface of the protective shell 13 is fixedly connected to a mounting plate 14.

[0035] The heater 2 is fitted inside the protective shell 13, and the mounting plate 14 is fixedly connected by bolts.

[0036] The top of the water tank 6 is fixedly connected to an inlet pipe 15, and the top of the inlet pipe 15 is threadedly connected to a cap 16. The bottom of the water tank 6 is fixedly connected to an outlet pipe 17, and a valve 18 is installed inside the outlet pipe 17.

[0037] The liquid inlet pipe 15 penetrates the inner wall of the water tank 6.

[0038] The implementation principle of an integrated crude oil extraction and fractionation device in this application embodiment is as follows: First, the crude oil is heated by the heater 2 and then fractionated by the primary distillation tower 10 and the atmospheric distillation tower 11. The non-condensable gas at the top of the primary distillation tower 10 and the non-condensable gas at the top of the atmospheric distillation tower 11 are combined and used as the heat medium furnace fuel gas in the device. Light component oil with naphtha and aviation kerosene as the main components is obtained from the atmospheric distillation tower 11, as well as heavy components such as diesel oil in the middle of the tower and residue oil at the bottom of the tower. The light component oil is discharged through the light component oil pipe 12.

[0039] The heat generated on the surface of heater 2 is absorbed through serpentine tube 3. Pump 4 is started, and the output end of pump 4 draws the cooling liquid inside water tank 6 into serpentine tube 3. The heat absorbed by serpentine tube 3 is then carried into the interior of transfer tube 2 9. Subsequently, it enters the interior of preheating tube 8 through transfer tube 2 9 to preheat the light component oil output from light component oil tube 12. This allows the heat carried inside preheating tube 8 to be absorbed. The water source that has absorbed the heat then enters the interior of water tank 6 through transfer tube 1 7 for recycling.

[0040] The above embodiments are merely preferred embodiments of this utility model and should not be construed as limiting the scope of protection of this utility model. Any non-substantial changes and substitutions made by those skilled in the art based on this utility model shall fall within the scope of protection claimed by this utility model.

Claims

1. An integrated crude oil extraction and fractionation unit, characterized in that: The system includes a main pipe (1), a heater (2) fixedly installed at the output end of the main pipe (1), a serpentine tube (3) sleeved on the surface of the heater (2), a pump (4) fixedly connected at the input end of the serpentine tube (3), a connecting pipe (5) fixedly connected at the input end of the pump (4), a water tank (6) fixedly connected at the input end of the connecting pipe (5), a transfer pipe (7) fixedly connected at the input end of the water tank (6), a preheating pipe (8) fixedly connected at the input end of the transfer pipe (7), a transfer pipe (9) fixedly connected at the input end of the preheating pipe (8), a primary distillation tower (10) fixedly connected at the output end of the heater (2), an atmospheric tower (11) fixedly connected at the output end of the primary distillation tower (10), and a light component oil pipe (12) fixedly connected at the output end of the atmospheric tower (11).

2. The integrated crude oil extraction and fractionation unit according to claim 1, characterized in that: The output end of the serpentine tube (3) is fixedly connected to the input end of the adapter tube (9).

3. The integrated crude oil extraction and fractionation unit according to claim 1, characterized in that: The preheating pipe (8) is sleeved on the surface of the light component oil pipe (12).

4. The integrated crude oil extraction and fractionation unit according to claim 1, characterized in that: Both the serpentine tube (3) and the preheating tube (8) are made of copper.

5. The integrated crude oil extraction and fractionation unit according to claim 1, characterized in that: A protective shell (13) is fixedly connected to the surface of the main body, and an mounting plate (14) is fixedly connected to the surface of the protective shell (13).

6. The integrated crude oil extraction and fractionation unit according to claim 5, characterized in that: The heater (2) is fitted inside the protective shell (13), and the mounting plate (14) is fixedly connected to the mounting plate (14) by bolts.

7. The integrated crude oil extraction and fractionation unit according to claim 1, characterized in that: The top of the water tank (6) is fixedly connected to an inlet pipe (15), the top of the inlet pipe (15) is threadedly connected to a cap (16), the bottom of the water tank (6) is fixedly connected to an outlet pipe (17), and a valve (18) is installed inside the outlet pipe (17).

8. The integrated crude oil extraction and fractionation unit according to claim 7, characterized in that: The liquid inlet pipe (15) penetrates the inner wall of the water tank (6).

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