Dewaxing device for petroleum production

Abstract

According to the dewaxing device for petroleum production, the designed structure is simple, flowing is blocked and delayed through the multiple delay plates, the cooling and shaping effect on paraffin in petroleum is improved, the rotating shaft drives the cleaning rod and the flexible strip to do annular motion, the flexible strip cleans the surface of the filter screen, the probability that the filter screen is blocked is reduced, and the service life of the filter screen is prolonged. The dewaxing device comprises a dewaxing box, an adding opening is formed in the top of the dewaxing box, an oil outlet pipe is arranged on the bottom side of the dewaxing box, a cooling pipe is communicated with the top of the dewaxing box, a refrigerator is communicated with the cooling pipe, a controller is arranged on the outer side of the refrigerator, and a plurality of delay plates are obliquely arranged in the dewaxing box in a staggered mode. A plurality of delay plates are used for blocking and delaying flowing, paraffin in petroleum is cooled and shaped, a blocking plate is arranged on the inner wall of the dewaxing box, the center of the blocking plate is obliquely and upwards arranged, and a circular plate is embedded in the center of the blocking plate.

Description

Technical Field

[0001] The utility model relates to the technical field of petroleum production, in particular to a dewaxing device used in petroleum production. Background Art

[0002] Oil, one of the main objects of geological exploration, is a viscous, dark brown liquid, known as the "blood of industry". Oil is stored in some areas of the upper crust. The main components are a mixture of various alkanes, cycloalkanes, and aromatic hydrocarbons. After oil is extracted, wax will be contained in the oil, and the wax in the oil needs to be removed to make the oil better. In order to maintain the low-temperature fluidity of lubricating oil, the wax contained in the raw oil must be removed during the production process of lubricating oil base oil to reduce the freezing point or pour point of the lubricating oil base oil. The wax products after de-oiling are divided into paraffin wax and microcrystalline wax. Paraffin wax is mainly composed of normal alkanes and a certain amount of isoalkanes, while microcrystalline wax contains normal alkanes, isoalkanes and alkyl cyclic hydrocarbons, and contains a certain amount of alkyl aromatic hydrocarbons. There are many methods for dewaxing lubricating oil, among which the most commonly used is solvent dewaxing. The principle of solvent dewaxing is to mix the raw oil with the dewaxing solvent, and then gradually cool it down. The solvent is insoluble in the wax component or slightly soluble in the wax component at low temperature, but soluble in other components, so that the wax is crystallized in the solution, and finally filtered to separate the oil and wax. After searching, the patent document with the publication (announcement) number: CN211420065U provides a dewaxing device for petrochemical industry. The dewaxing device for petrochemical industry includes a dewaxing box, a liquid inlet is provided on one side of the dewaxing box, and a first water tank is fixedly connected to the outer wall of the dewaxing box away from the liquid inlet. The top of the first water tank is connected to a first water pipe, and the outside of the first water pipe and located in the dewaxing box are fixedly connected to a second water pipe, and the outside of the dewaxing box and located below the first water tank are fixedly connected to a second water tank. The base oil is introduced into the dewaxing tank through the liquid inlet, and the water pump in the first water tank is started to allow the cold water in the first water tank to enter the dewaxing tank through the first water pipe. The second water pipe in the dewaxing tank accelerates the cooling of the base oil. The cooled base oil enters and flows out through the liquid outlet pipe, and the oil and wax are separated through the filter. The device is simple to operate, and can accelerate the cooling of the base oil and improve production efficiency.

[0003] The existing device cannot cool the oil well, and the filter screen cannot be automatically cleaned, which causes blockage and affects normal use. Utility Model Content

[0004] In view of the defects existing in the prior art, the technical problem solved by the utility model is that the existing device cannot cool the oil well, and the filter screen cannot be automatically cleaned, which causes blockage and affects normal use. A dewaxing device for oil production is provided.

[0005] In order to achieve the above objectives, the utility model provides:

[0006] A dewaxing device for petroleum production comprises a dewaxing box, a charging port is arranged on the top of the dewaxing box, an oil outlet pipe is arranged on the bottom side of the dewaxing box, a cooling pipe is connected to the top of the dewaxing box, a refrigerator is connected to the cooling pipe, a controller is arranged on the outside of the refrigerator, a plurality of delay plates are arranged obliquely and staggeredly inside the dewaxing box, and the flow of the delay plates is blocked and delayed to cool and shape the paraffin inside the petroleum, a blocking plate is arranged on the inner wall of the dewaxing box, the center of the blocking plate is arranged obliquely upward, a circular plate is embedded in the center of the blocking plate, a cleaning mechanism is rotatably installed on the circular plate, an annular hole is opened on the blocking plate, a filter screen is arranged in the annular hole, the cleaning mechanism is adapted to the filter screen, four supporting legs are arranged at the bottom of the dewaxing box, and rubber pads are arranged at the bottom of the four supporting legs.

[0007] Preferably, both sides of the dewaxing box are provided with outlet pipes, which are rectangular in structure and inclined downward; the paraffin is discharged and collected through the two outlet pipes.

[0008] Preferably, a blocking ring is provided at the top of the blocking plate, located outside the annular hole; the blocking ring can block the oil, and the size of the paraffin is relatively large, and the blocking ring will not block the paraffin.

[0009] Preferably, the cleaning mechanism includes a rotating shaft, which is rotatably mounted on a circular plate, a cleaning rod is mounted on the outer side of the rotating shaft, a flexible strip is provided at the bottom of the cleaning rod, and the flexible strip is adapted to the filter net; the rotating shaft drives the cleaning rod and the flexible strip to perform circular motion, and the flexible strip cleans the surface of the filter net to prevent the filter net from being blocked.

[0010] Preferably, the bottom end of the rotating shaft extends to the bottom of the dewaxing box and is installed with a servo motor, the servo motor is installed at the bottom of the dewaxing box, the rotating shaft is rotatably connected to the dewaxing box, and a sealing ring is provided between the rotating shaft and the dewaxing box.

[0011] Preferably, the front of the dewaxing box is provided with an opening, a box cover is rotatably installed at the position of the opening, a lock is provided between the box cover and the opening, and transparent glass is provided on the box cover; the box cover can be opened to operate the interior of the dewaxing box, and the transparent glass can facilitate observation of the interior of the dewaxing box.

[0012] Compared with the prior art, the advantages of the utility model are:

[0013] 1. The refrigerant gas is introduced into the dewaxing box through the cooling pipe by the refrigerator to cool the inside of the dewaxing box. The oil is added into the dewaxing box through the adding port, and the flow is blocked and delayed by multiple delay plates to improve the cooling and shaping effect of the paraffin inside the oil;

[0014] 2. The oil is filtered through the filter and flows to the bottom inner wall of the dewaxing box. The paraffin falls on the surface of the filter to block it. Then the paraffin slides down along the inclination of the filter and is led out and collected through two export pipes. The blocking ring can block the oil. The paraffin is large in size and the blocking ring will not block the paraffin. The servo motor drives the rotating shaft to rotate, and the rotating shaft drives the cleaning rod and the flexible strip to make a circular motion. The flexible strip cleans the surface of the filter to reduce the probability of filter blockage. The paraffin can be led out and collected through the two export pipes.

[0015] The utility model has a simple structure, and uses a plurality of delay plates to block and delay the flow, thereby improving the cooling and shaping effect of the paraffin inside the petroleum. The rotating shaft drives the cleaning rod and the flexible strip to make annular motion, and the flexible strip cleans the surface of the filter screen, thereby reducing the probability of clogging of the filter screen. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is the main structure diagram of this design;

[0017] Figure 2 Designed for this Figure 1 A schematic cross-sectional structure diagram of;

[0018] Figure 3 It is a schematic diagram of the top view structure of the blocking plate, blocking ring, filter screen and circular plate in this design;

[0019] Figure 4 Design for this Figure 2 Schematic diagram of the structure of part A.

[0020] In the figure: 1. dewaxing box; 2. adding port; 3. cooling pipe; 4. refrigerator; 5. delay plate; 6. supporting leg; 7. circular plate; 8. blocking plate; 9. blocking ring; 10. annular hole; 11. filter screen; 12. cleaning rod; 13. flexible strip; 14. outlet pipe; 15. rotating shaft; 16. servo motor; 17. controller; 18. box cover; 19. transparent glass; 20. oil outlet pipe. DETAILED DESCRIPTION

[0021] The embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0022] See also Figure 1-4As shown, a dewaxing device for petroleum production includes a dewaxing box 1, a charging port 2 is arranged on the top of the dewaxing box 1, an oil outlet pipe 20 is arranged on the bottom side of the dewaxing box 1, a cooling pipe 3 is connected to the top of the dewaxing box 1, a refrigerator 4 is connected to the cooling pipe 3, a controller 17 is arranged on the outside of the refrigerator 4, a plurality of delay plates 5 are arranged obliquely and staggered inside the dewaxing box 1, and the flow of the plurality of delay plates 5 is blocked and delayed, so that the paraffin inside the petroleum is cooled and shaped, a blocking plate 8 is arranged on the inner wall of the dewaxing box 1, the center of the blocking plate 8 is arranged obliquely upward, a circular plate 7 is embedded in the center of the blocking plate 8, a cleaning mechanism is rotatably installed on the circular plate 7, an annular hole 10 is opened on the blocking plate 8, a filter screen 11 is arranged in the annular hole 10, the cleaning mechanism is adapted to the filter screen 11, four supporting legs 6 are arranged at the bottom of the dewaxing box 1, and rubber pads are arranged at the bottom of the four supporting legs 6.

[0023] In this embodiment, outlet pipes 14 are provided on both sides of the dewaxing box 1. The outlet pipes 14 are rectangular in structure and are tilted downward. The paraffin is discharged and collected through the two outlet pipes 14.

[0024] In this embodiment, a blocking ring 9 is provided at the top of the blocking plate 8 outside the annular hole 10; the blocking ring 9 can block the oil, and the size of the paraffin is relatively large, so the blocking ring 9 will not block the paraffin.

[0025] In this embodiment, the cleaning mechanism includes a rotating shaft 15, which is rotatably mounted on the circular plate 7. A cleaning rod 12 is mounted on the outer side of the rotating shaft 15. A flexible strip 13 is provided at the bottom of the cleaning rod 12, and the flexible strip 13 is adapted to the filter screen 11. The rotating shaft 15 drives the cleaning rod 12 and the flexible strip 13 to make a circular motion, and the flexible strip 13 cleans the surface of the filter screen 11 to prevent the filter screen 11 from being blocked.

[0026] In this embodiment, the bottom end of the rotating shaft 15 extends to the bottom of the dewaxing box 1 and is installed with a servo motor 16. The servo motor 16 is installed at the bottom of the dewaxing box 1. The rotating shaft 15 is rotatably connected to the dewaxing box 1, and a sealing ring is arranged between the rotating shaft 15 and the dewaxing box 1.

[0027] In this embodiment, an opening is provided on the front of the dewaxing box 1, and a box cover 18 is rotatably installed at the position of the opening. A lock is provided between the box cover 18 and the opening, and a transparent glass 19 is provided on the box cover 18; the box cover 18 can be opened to operate the interior of the dewaxing box 1, and the transparent glass 19 can facilitate observation of the interior of the dewaxing box 1.

[0028] Working principle: When in use, the refrigerant gas is introduced into the interior of the dewaxing box 1 through the refrigerator 4 through the cooling pipe 3, so as to cool the interior of the dewaxing box 1, and petroleum is added into the dewaxing box 1 through the adding port 2, and the flow is blocked and delayed by multiple delay plates 5 to cool and shape the paraffin inside the petroleum, and then the oil is filtered through the filter screen 11 and flows to the bottom inner wall of the dewaxing box 1, and the paraffin falls on the surface of the filter screen 11 to be blocked, and then the paraffin slides down along the inclination of the filter screen 11, and the paraffin is discharged and collected through two outlet pipes 14, and the blocking ring 9 provided can block the oil. The paraffin is large in size, and the blocking ring 9 will not block the paraffin, and the servo motor 16 drives the rotating shaft 15 to rotate, and the rotating shaft 15 drives the cleaning rod 12 and the flexible strip 13 to make a circular motion, and the flexible strip 13 cleans the surface of the filter screen 11 to avoid clogging of the filter screen 11, and the paraffin can be discharged and collected through the two outlet pipes 14, and the oil can be discharged and collected through the oil outlet pipe 20.

[0029] The present utility model is not limited to the above-mentioned optimal implementation mode. Anyone can derive other various forms of products under the inspiration of the present utility model. However, no matter what changes are made in the shape or structure, all those with the same or similar technical solutions as the present utility model are within the scope of protection.

Claims

1. A dewaxing device for oil production, comprising a dewaxing box (1), a top of the dewaxing box (1) being provided with a feed port (2), and a bottom of the dewaxing box (1) being provided with an oil outlet pipe (20), characterized in that: The top of the dewaxing box (1) is connected to a cooling pipe (3), the cooling pipe (3) is connected to a refrigerator (4), a controller (17) is arranged on the outside of the refrigerator (4), a plurality of delay plates (5) are arranged obliquely inside the dewaxing box (1), the plurality of delay plates (5) are arranged obliquely and staggered, a blocking plate (8) is arranged on the inner wall of the dewaxing box (1), the center of the blocking plate (8) is arranged obliquely upward, a circular plate (7) is embedded in the center of the blocking plate (8), a cleaning mechanism is rotatably mounted on the circular plate (7), an annular hole (10) is opened on the blocking plate (8), a filter screen (11) is arranged in the annular hole (10), and the cleaning mechanism is compatible with the filter screen (11).

2. A dewaxing device for oil production according to claim 1, characterized in that: Both sides of the dewaxing box (1) are provided with outlet pipes (14), and the outlet pipes (14) are of a rectangular structure and are arranged to face downwards in an inclined manner.

3. A dewaxing device for oil production according to claim 1, characterized in that: A blocking ring (9) is provided on the top of the blocking plate (8) and outside the annular hole (10).

4. A dewaxing device for oil production according to claim 1, characterized in that: The cleaning mechanism comprises a rotating shaft (15) which is rotatably mounted on the circular plate (7). A cleaning rod (12) is mounted on the outer side of the rotating shaft (15). A flexible strip (13) is provided at the bottom of the cleaning rod (12). The flexible strip (13) is adapted to fit the filter screen (11).

5. A dewaxing device for oil production according to claim 4, characterized in that: The bottom end of the rotating shaft (15) extends to the bottom of the dewaxing box (1) and is installed with a servo motor (16). The servo motor (16) is installed at the bottom of the dewaxing box (1). The rotating shaft (15) is rotatably connected to the dewaxing box (1). A sealing ring is provided between the rotating shaft (15) and the dewaxing box (1).

6. A dewaxing device for oil production according to claim 1, characterized in that: Four supporting legs (6) are arranged at the bottom of the dewaxing box (1), and rubber pads are arranged at the bottoms of the four supporting legs (6).

7. A dewaxing device for oil production according to claim 1, characterized in that: The front of the dewaxing box (1) is provided with an opening, a box cover (18) is rotatably mounted at the position of the opening, a lock is provided between the box cover (18) and the opening, and a transparent glass (19) is provided on the box cover (18).

Images