Spiral flow guide type crude oil vacuum degassing and condensing recovery device

Abstract

The utility model discloses a spiral flow guide type crude oil vacuum degassing condensation recovery device, including frame, be provided with cooling tank in the frame, the fixed coupling of condensing assembly has in the cooling tank, the lower end intercommunication of condensing assembly is used for separating the shunt component of condensing crude oil and mixed gas, the shunt component is located below the cooling tank and sets up the utility model, through setting condensing assembly, when carrying out condensation recovery crude oil to mixed gas, utilize spiral flow guide pipe extension gas flow time, cooperate the flow guide groove on flow guide pipe simultaneously, after injecting cooling water into flow guide groove, carry out long -time condensation to mixed gas, make the gasification crude oil in mixed gas condense in the inner wall of flow guide pipe, then crude oil has mixed gas and enters the shunt component separation, realize the recovery to crude oil, reduce the waste of crude oil resources, improve crude oil utilization rate.

Description

Technical Field

[0001] This utility model relates to the technical field of crude oil degassing equipment, and in particular to a spiral flow type crude oil vacuum degassing, condensation and recovery device. Background Technology

[0002] Crude oil degassing separates and recycles light hydrocarbons such as methane, ethane, propane, and butane from crude oil, improving economic efficiency. Crude oil vacuum degassing involves placing crude oil in a sealed tank, removing the air, and reducing the pressure inside the tank to near a vacuum, thus separating the gas from the crude oil.

[0003] During the crude oil vacuum degassing process, some of the gas formed by crude oil volatilization will also mix into the separated gas. Condensing and recovering the volatilized crude oil can effectively improve the crude oil utilization rate and reduce resource waste. To this end, we propose a spiral flow crude oil vacuum degassing condensation and recovery device to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a spiral flow-guided crude oil vacuum degassing and condensation recovery device.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] The spiral flow type crude oil vacuum degassing, condensation and recovery unit includes:

[0007] A frame, in which a cooling tank is provided, and a condensation assembly is fixedly connected inside the cooling tank. The lower end of the condensation assembly is connected to a flow divider for separating condensed crude oil from the mixed gas.

[0008] The flow splitter assembly is located below the cooling tank.

[0009] Preferably, the condensation assembly includes a crossbar fixedly connected to the inner wall of the cooling tank, a guide pipe fixedly connected to the crossbar, and a guide groove fixedly connected to the upper surface of the guide pipe.

[0010] Preferably, the diversion assembly includes a connecting plate, which is fixedly connected to the lower end of the guide pipe. A plurality of diversion rods are fixedly connected to the lower end of the connecting plate. A liquid storage shell is fixedly connected to the lower end of the frame. The diversion rods are located inside the liquid storage shell. An air outlet pipe is connected to the upper side wall of the liquid storage shell.

[0011] Preferably, both the guide pipe and the guide groove are spiral-shaped, and the cross-section of the end face of both the guide pipe and the guide groove is rectangular.

[0012] Preferably, the cooling tank is connected to a cooling pipe, which is arranged to pass through the cooling tank. The opening of the cooling pipe located inside the cooling tank is located near the guide groove, and the lower end of the cooling tank is also connected to a return pipe.

[0013] Preferably, a heat-conducting plate is fixedly connected to the lower surface of the guide tube, and the heat-conducting plate is located inside the guide groove.

[0014] Preferably, the side wall of the diversion rod is provided with a circumferentially arranged diversion groove.

[0015] Preferably, the side wall of the cooling tank is covered with a heat insulation sleeve, and the side wall of the cooling tank is provided with an observation port, and the observation port is embedded with transparent glass.

[0016] Preferably, one side of the liquid storage tank is connected to a liquid outlet pipe, and a solenoid valve is connected to the liquid outlet pipe.

[0017] Preferably, the cross-section of the connecting plate is U-shaped, and a guide plate is fixedly connected to the upper surface of the connecting plate near the guide rod.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model, by setting up a condensation component, utilizes a spiral guide tube to extend the gas flow time when condensing and recovering crude oil from a mixed gas. Simultaneously, in conjunction with a guide groove located on the guide tube, after cooling water is injected into the guide groove, the mixed gas undergoes prolonged condensation, causing the vaporized crude oil in the mixed gas to condense on the inner wall of the guide tube. Subsequently, the crude oil and mixed gas enter the flow separation component for separation, thereby realizing the recovery of crude oil, reducing the waste of crude oil resources, and improving the utilization rate of crude oil.

[0020] 2. This utility model, by setting a guide tube with a rectangular cross-section, can significantly reduce the height of the flow interface of the guide tube, thereby allowing the gas in the guide tube to fully exchange heat with the inner wall of the guide tube. In addition, with the guide plate, the upper and lower sides of the guide tube can exchange heat with the cooling water in the guide groove, further expanding the heat exchange area, improving the crude oil condensation rate, and ultimately achieving the goal of improving the crude oil recovery rate. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the overall structure of the spiral flow-guided crude oil vacuum degassing and condensation recovery device proposed in this utility model.

[0022] Figure 2 This is a partial internal structural diagram of the spiral flow-guided crude oil vacuum degassing and condensation recovery device proposed in this utility model.

[0023] Figure 3This is a schematic diagram of the internal lower cross-sectional structure of the spiral flow-guided crude oil vacuum degassing and condensation recovery device proposed in this utility model.

[0024] Figure 4 This is a schematic cross-sectional view of the guide tube structure of the spiral flow-guided crude oil vacuum degassing and condensation recovery device proposed in this utility model.

[0025] Figure 5 This is a schematic diagram of the connecting plate structure of the spiral flow-guided crude oil vacuum degassing and condensation recovery device proposed in this utility model;

[0026] Figure 6 for Figure 5 A magnified structural diagram of point A in the middle.

[0027] In the diagram: 1. Frame; 2. Cooling tank; 3. Crossbar; 4. Guide pipe; 5. Guide groove; 6. Connecting plate; 7. Guide rod; 8. Liquid storage tank; 9. Guide plate; 10. Gas outlet pipe; 11. Cooling pipe; 12. Return pipe; 13. Guide groove; 14. Observation port; 15. Liquid outlet pipe; 16. Solenoid valve; 17. Heat conduction plate. Detailed Implementation

[0028] 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.

[0029] Reference Figures 1-6 A spiral-guided crude oil vacuum degassing and condensation recovery unit includes:

[0030] A frame 1 is provided, and a cooling tank 2 is provided inside the frame 1. A condensing component is fixedly connected inside the cooling tank 2. The lower end of the condensing component is connected to a diversion component for separating condensed crude oil from mixed gas. The side wall of the cooling tank 2 is wrapped with a heat insulation sleeve. An observation port 14 is provided on the side wall of the cooling tank 2, and a transparent glass is embedded in the observation port 14.

[0031] The cooling tank 2, which is encased in a heat-insulating jacket, can maintain the internal temperature. Generally, the temperature inside the petrochemical plant is relatively high, while the temperature inside the cooling tank 2 needs to be lower than the boiling point of crude oil (40°C). Since the temperature difference is positively correlated with the heat exchange efficiency, the temperature inside the cooling tank 2 needs to be maintained at an even lower temperature (higher than the freezing point of crude oil, and considering the increased viscosity and decreased fluidity of crude oil in low-temperature environments, the temperature inside the cooling tank 2 is maintained between 0-20°C). The observation port 14 is provided to facilitate users to observe the amount of cooling water inside the cooling tank 2. Retaining a portion of cooling water at the bottom of the cooling tank 2 can better condense and recover crude oil from the mixed gas, but too much cooling water can easily cause uneven temperature inside the cooling tank 2.

[0032] The flow splitter assembly is located below the cooling tank 2.

[0033] The condensation assembly includes a crossbar 3 fixedly connected to the inner wall of the cooling tank 2. A guide pipe 4 is fixedly connected to the crossbar 3. A guide groove 5 is fixedly connected to the upper surface of the guide pipe 4. Both the guide pipe 4 and the guide groove 5 are spiral-shaped, dividing the guide pipe 4 and the guide groove 5 into several stages. The cross-section of the end face of the guide pipe 4 and the guide groove 5 is rectangular. A heat-conducting plate 17 is fixedly connected to the lower surface of the guide pipe 4. The heat-conducting plate 17 is located in the next stage of the guide groove 5. The heat-conducting plate 17 located at the bottom of the guide pipe 4 can exchange heat with the cooling water in the corresponding guide groove 5, so that the upper and lower inner walls of the guide pipe 4 maintain a low temperature, and fully exchange heat with the mixed gas in the guide pipe 4 to achieve the condensation of crude oil.

[0034] Based on the above design, the crossbar 3 is used to support the guide pipe 4, while the guide groove 5 is directly fixed to the guide pipe 4. The spiral-shaped guide pipe 4 can prolong the residence time of the mixed gas in the guide pipe 4, thereby prolonging the heat exchange time, enhancing the condensation effect, improving the crude oil recovery rate, and reducing resource waste. At the same time, in the actual condensation process, the injected cooling water flows along the guide groove 5 (or a certain amount is injected to achieve relative stillness between the cooling water and the guide groove 5), and exchanges heat with the mixed gas in the guide pipe 4. The bottom of the cooling tank 2 submerges the guide pipe. The tube 4 has one or two turns. As the mixed gas is about to leave the guide tube 4, the heat exchange area is further expanded to ensure that most of the crude oil in the mixed gas condenses into liquid. Since this point is close to the outlet of the guide tube 4, even if the crude oil cooled in the guide tube 4 becomes extremely poor in fluidity at this point, it can still flow out of the guide tube 4 relatively quickly (the required flow distance is short). This reduces the amount of crude oil residue in the guide tube 4 and prevents the components with higher freezing points in the crude oil from clogging the guide tube 4 or covering the inner wall of the guide tube 4, thus affecting the heat exchange efficiency of the guide tube 4.

[0035] Furthermore, the diversion assembly includes a connecting plate 6, which is fixedly connected to the lower end of the guide pipe 4. A plurality of guide rods 7 are fixedly connected to the lower end of the connecting plate 6. The top cross-section of the connecting plate 6 is U-shaped, and a guide plate 9 is fixedly connected to the upper surface of the connecting plate 6 near the guide rod 7. The guide rod 7 has a hollow design with both ends through. A circumferential guide groove 13 is opened on the side wall of the guide rod 7. A liquid storage shell 8 is fixedly connected to the lower end of the frame 1. The guide rod 7 is located inside the liquid storage shell 8. An air outlet pipe 10 is connected to the upper side wall of the liquid storage shell 8.

[0036] In this design, the lower end of the guide pipe 4 extends into the liquid storage tank 8, and the connecting plate 6 is located at the outlet of the guide pipe 4. After the crude oil passes through the guide pipe 4, the bottom of the connecting plate 6 receives the crude oil, and the condensed crude oil flows along the connecting plate 6 into the guide rod 7, and then flows down along the guide rod 7 into the liquid storage tank 8. The guide plate 9 is set to collect the condensed crude oil onto the guide rod 7, and the guide rod 7 is set to prevent the mixed gas from being mixed into the crude oil again due to splashing when the crude oil flows down into the liquid storage tank 8. The mixed gas is discharged from the gas outlet pipe 10, which needs to be connected to the mixed gas collection equipment. The mixed gas still needs to be processed later. In addition, the guide groove 13 can increase the contact area between the crude oil and the guide rod 7, reduce the speed of the crude oil flowing down, and further prevent crude oil splashing.

[0037] Furthermore, a cooling pipe 11 is connected to the cooling tank 2, the cooling pipe 11 is arranged through the cooling tank 2, the opening of the cooling pipe 11 located inside the cooling tank 2 is located close to the guide groove 5, and the lower end of the cooling tank 2 is also connected to a return pipe 12.

[0038] In this design, cooling pipe 11 and return pipe 12 are connected to an external water circulation device, which is a cooling tower or other cooling water supply device with active cooling function. The cooling water is circulated and supplied according to actual needs to maintain the temperature inside the cooling tank 2.

[0039] Furthermore, one side of the liquid storage shell 8 is connected to an outlet pipe 15, and an electromagnetic valve 16 is connected to the outlet pipe 15.

[0040] The outlet pipe 15 is equipped with a solenoid valve 16 to discharge crude oil after it has accumulated to a certain level in the storage tank 8. Retaining a small amount of crude oil in the storage tank 8 can also prevent the crude oil from splashing when it drips and prevent the mixed gas from mixing with the crude oil again.

[0041] 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 spiral flow guide type crude oil vacuum degassing and condensing recovery device, characterized in that, include: A frame (1) is provided with a cooling tank (2) inside the frame (1). A condensing component is fixedly connected inside the cooling tank (2). The lower end of the condensing component is connected to a diversion component for separating condensed crude oil from mixed gas. The flow splitter assembly is located below the cooling tank (2); The condensation assembly includes a crossbar (3) fixedly connected to the inner wall of the cooling tank (2), a guide pipe (4) fixedly connected to the crossbar (3), and a guide groove (5) fixedly connected to the upper surface of the guide pipe (4). Both the guide pipe (4) and the guide groove (5) are spiral-shaped, and the cross-section of the end face of both the guide pipe (4) and the guide groove (5) is rectangular.

2. The helical flow guide type crude oil vacuum deaeration and condensation recovery device according to claim 1, characterized in that, The diversion assembly includes a connecting plate (6), which is fixedly connected to the lower end of the guide pipe (4). Multiple diversion rods (7) are fixedly connected to the lower end of the connecting plate (6). A liquid storage shell (8) is fixedly connected to the lower end of the frame (1). The diversion rods (7) are located inside the liquid storage shell (8). An air outlet pipe (10) is connected to the upper side wall of the liquid storage shell (8).

3. The helical flow guiding crude oil vacuum degassing and condensing recovery device according to claim 2, characterized in that, The cooling tank (2) is connected to a cooling pipe (11), which is installed through the cooling tank (2). The opening of the cooling pipe (11) inside the cooling tank (2) is located close to the guide groove (5). The lower end of the cooling tank (2) is also connected to a return pipe (12).

4. The helical flow guide type crude oil vacuum deaeration and condensation recovery device according to claim 2, characterized in that, A heat-conducting plate (17) is fixedly connected to the lower surface of the guide pipe (4), and the heat-conducting plate (17) is located in the next-level guide groove (5).

5. The helical flow guiding crude oil vacuum degassing and condensing recovery device according to claim 3, characterized in that, The side wall of the diversion rod (7) is provided with a surrounding diversion groove (13).

6. The helical flow guiding crude oil vacuum deaeration and condensation recovery device according to claim 2, characterized in that, The side wall of the cooling tank (2) is covered with a heat insulation sleeve, and the side wall of the cooling tank (2) is provided with an observation port (14), and the observation port (14) is inlaid with transparent glass.

7. The helical flow guiding crude oil vacuum degassing and condensing recovery device according to claim 3, characterized in that, One side of the liquid storage shell (8) is connected to the liquid outlet pipe (15), and the liquid outlet pipe (15) is connected to the solenoid valve (16).

8. The helical flow guiding crude oil vacuum degassing and condensing recovery device according to claim 3, characterized in that, The cross-section of the connecting plate (6) is U-shaped, and a guide plate (9) is fixedly connected to the upper surface of the connecting plate (6) near the guide rod (7).

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