Crude oil associated gas flash separation device

Abstract

The utility model discloses a crude oil associated gas flash separation device, which belongs to the technical field of separation devices and comprises a stabilizing tower, a feeding pipe for feeding and a gas outlet pipe for discharging are fixedly mounted on the outer wall of the stabilizing tower, and a flash separation device body is arranged between the feeding pipe and the gas outlet pipe. The flash separation device body is fixedly installed in an inner cavity of the stabilizing tower through a supporting partition plate, a scraping mechanism is arranged on the side portion of the flash separation device body, and a filtering assembly is arranged at the bottom end of the scraping mechanism. By arranging the scraping mechanism, under the action of the air cylinder, a connecting rod, a first scraping plate, a second connecting plate, a second scraping plate and a third scraping plate can be driven to do telescopic motion through telescopic motion of a telescopic rod, and cleaning and scraping of different height positions of the inner wall of the stabilizing tower and different height positions of the side portion of a supporting partition plate are achieved; impurities are prevented from being accumulated, the service life of equipment is prolonged, the collection effect after gas liquefaction is improved, and the efficiency and quality of the subsequent collection process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of separation devices, in particular to a flash separation device for crude oil associated gas. Background Art

[0002] Flash evaporation refers to the phenomenon that when a high-pressure saturated liquid enters a low-pressure environment, part of the liquid quickly evaporates into steam. Specifically, when a saturated liquid (such as water) under high pressure is introduced into a container or environment with lower pressure, the boiling point of the liquid will drop below the current temperature due to the reduction in pressure. This causes the liquid that would not boil under high pressure to begin to evaporate rapidly when the pressure drops suddenly, forming bubbles. This process is called flash evaporation.

[0003] Crude oil associated gas refers to the gas produced during the extraction and processing of crude oil, mainly including natural gas, carbon dioxide, nitrogen, methane, etc. These associated gases usually exist in the form of a mixture, among which natural gas is one of the most common components. When separating crude oil associated gas in the prior art, since it is processed in a relatively sealed state, impurities will be attached to the inner cavity of the processing device after the separation is completed, making it difficult to clean up, thereby affecting the subsequent processing effect. Therefore, the utility model provides a crude oil associated gas flash separation device to solve the above-mentioned problems. Utility Model Content

[0004] The utility model aims to provide a crude oil associated gas flash separation device to solve the problems raised in the above background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A flash separation device for crude oil associated gas comprises a stabilizing tower, a feed pipe for feeding and an outlet pipe for discharging are fixedly installed on the outer wall of the stabilizing tower, a flash separation device body is arranged between the feed pipe and the outlet pipe, the flash separation device body is fixedly installed in the inner cavity of the stabilizing tower through a supporting partition, a scraping mechanism is arranged on the side of the flash separation device body, and a filtering assembly is arranged at the bottom end of the scraping mechanism;

[0007] The scraper mechanism includes a telescopic rod arranged in the inner cavity of the stabilizing tower, and a first scraper and a second connecting plate are arranged on the periphery of the telescopic rod. The first scraper and the second connecting plate are fixedly connected to the bottom end of the telescopic rod through the connecting rod, and the side of the second connecting plate is provided with a second scraper and a third scraper.

[0008] As a further solution of the utility model, the second scraper is fixedly mounted on the top end of the second connecting plate away from the connecting rod, and the third scraper is fixed on the bottom end of the second connecting plate away from the connecting rod.

[0009] As a further solution of the utility model, a leakage hole is opened on the top of the third scraper, and the third scraper and the second scraper are symmetrically arranged on the side of the second connecting plate.

[0010] As a further solution of the utility model, a cylinder is provided at the top end of the telescopic rod, a top cover is fixedly installed on the side of the cylinder, the top cover is fixedly installed on the top of the inner cavity of the stabilizing tower, and the output end of the cylinder passes through the side of the top cover and is fixedly connected to one end of the telescopic rod away from the connecting rod.

[0011] As a further solution of the utility model, the filter assembly includes a first filter plate, a partition plate and a filter baffle are installed on the side of the first filter plate, the partition plate and the filter baffle are respectively installed on the inner wall of the supporting partition and the stabilizing tower at one end away from the first filter plate, a liquid outlet pipe is fixedly installed at the bottom end of the first filter plate, first connecting plates are provided on both sides of the first filter plate, and the first connecting plate is fixedly connected to the stabilizing tower and the first filter plate by bolts.

[0012] As a further solution of the utility model, a material receiving pipe is fixedly installed at the bottom end of the stabilizing tower.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. When the utility model is used, by setting a scraping mechanism, under the action of the cylinder, the telescopic movement of the telescopic rod can drive the movement of the connecting rod, the first scraper and the second connecting plate. The telescopic movement of the first scraper can clean different height positions of the inner wall of the stabilization tower, and the telescopic movement of the second connecting plate can drive the second scraper and the third scraper to perform telescopic movement, thereby realizing the cleaning and scraping of different height positions of the side of the supporting partition, preventing impurities from accumulating, extending the service life of the equipment, improving the collection effect of the gas after liquefaction, and ensuring the efficiency and quality of the subsequent collection process.

[0015] 2. When the utility model is used, by setting a filter assembly, the liquid separated by the flash separation device body and the vaporized liquid can be filtered respectively, thereby reducing the impurity content in the gas and liquid and further improving the separation effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a front view of the overall structure of a crude oil associated gas flash separation device.

[0017] Figure 2 The figure is a side view of the overall structure of a crude oil associated gas flash separation device.

[0018] Figure 3 This is a schematic diagram of the internal structure of a stabilization tower in a crude oil associated gas flash separation device.

[0019] Figure 4 This is a partial structural diagram of the scraping mechanism in a crude oil associated gas flash separation device.

[0020] In the figure: 1. stabilizing tower; 2. feed pipe; 3. cylinder; 4. receiving pipe; 5. air outlet pipe; 6. liquid outlet pipe; 7. supporting partition; 8. top cover; 9. first connecting plate; 10. bolts; 11. flash separation device body; 12. first filter plate; 13. partition plate; 14. filter baffle; 15. telescopic rod; 16. first scraper; 17. connecting rod; 18. second scraper; 19. second connecting plate; 20. third scraper; 21. leakage hole. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] Example 1: Please refer to Figure 1 - Figure 4 In an embodiment of the utility model, a flash separation device for crude oil associated gas includes a stabilization tower 1. The stabilization tower 1 can be of negative pressure or normal pressure type, and a vacuum compressor is installed outside the stabilization tower 1 to evacuate the gas to maintain the required vacuum degree. A feed pipe 2 for feeding and an outlet pipe 5 for discharging are fixedly installed on the outer wall of the stabilization tower 1. A flash separation device body 11 is arranged between the feed pipe 2 and the outlet pipe 5. The flash separation device body 11 is fixedly installed in the inner cavity of the stabilization tower 1 through a supporting partition 7. The flash separation device body 11 can be used to separate oil, liquid and gas in the crude oil associated gas. A scraping mechanism is arranged on the side of the flash separation device body 11, and a filter assembly is arranged at the bottom end of the scraping mechanism. The gas and liquid can be filtered separately through the filter assembly to improve the filtering effect.

[0023] The scraping mechanism includes a telescopic rod 15 arranged in the inner cavity of the stabilizing tower 1, and a first scraper 16 and a second connecting plate 19 are arranged on the periphery of the telescopic rod 15. The first scraper 16 and the second connecting plate 19 are fixedly connected to the bottom end of the telescopic rod 15 through a connecting rod 17. The side of the second connecting plate 19 is provided with a second scraper 18 and a third scraper 20. The shapes of the second scraper 18 and the third scraper 20 are set in a triangular state, which can reduce the contact area between the second scraper 18 and the third scraper 20 and the supporting partition 7, thereby reducing the adhesion area of ​​impurities and liquids, and improving the scraping effect;

[0024] See also Figure 4 The second scraper 18 is fixedly mounted on the top of the second connecting plate 19 away from the connecting rod 17. The connecting rod 17 connects the second scraper 18 and the second connecting plate 19 to achieve synchronous movement of the second scraper 18 and the second connecting plate 19. The third scraper 20 is fixed on the bottom of the second connecting plate 19 away from the connecting rod 17.

[0025] See also Figure 4 A leak hole 21 is provided on the top of the third scraper 20. The third scraper 20 and the second scraper 18 are symmetrically arranged on the side of the second connecting plate 19. By providing a through hole on the side of the third scraper 20, the gas and liquid scraped by the second scraper 18 can be easily circulated;

[0026] See also Figure 3 and Figure 4 A cylinder 3 is provided at the top of the telescopic rod 15, and a top cover 8 is fixedly installed on the side of the cylinder 3. The top cover 8 plays a sealing role. The top cover 8 is fixedly installed on the top of the inner cavity of the stabilizing tower 1. The output end of the cylinder 3 passes through the side of the top cover 8 and is fixedly connected to the end of the telescopic rod 15 away from the connecting rod 17. The cylinder 3 can provide the motive force for the telescopic movement of the telescopic rod 15. The inner wall of the stabilizing tower 1 and the side of the supporting partition 7 can be cleaned by the telescopic movement of the telescopic rod 15.

[0027] Example 2: Please refer to Figure 1 - Figure 4 , based on Example 1, the filter assembly includes a first filter plate 12, and a partition plate 13 and a filter baffle 14 are installed on the side of the first filter plate 12. The partition plate 13 plays a role of separation to prevent the flow of gas and the circulation of gas after liquefaction. The partition plate 13 and the filter baffle 14 are installed on the inner wall of the supporting partition 7 and the stabilizing tower 1 away from the end of the first filter plate 12. The filter baffle 14 can filter the separated liquid again to improve the purity of the separated liquid and reduce the adhesion of impurities. The bottom end of the first filter plate 12 is fixedly installed with a liquid outlet pipe 6, and first connecting plates 9 are arranged on both sides of the first filter plate 12. The first connecting plate 9 is fixedly connected to the stabilizing tower 1 and the first filter plate 12 by bolts 10. The first connecting plate 9 can be fixedly connected to the first filter plate 12 and the inner wall of the stabilizing tower 1 by bolts 10;

[0028] See also Figure 1 and Figure 2 A material receiving pipe 4 is fixedly installed at the bottom end of the stabilization tower 1. The material receiving pipe 4 can be used to collect the crude oil associated gas liquid separated by the flash separation device body 11 and filtered by the filter baffle 14, so as to facilitate material discharge.

[0029] The working principle of the utility model is as follows: when the device is needed to perform flash separation on crude oil associated gas, the crude oil associated gas needs to be first transported into the inner cavity of the stabilization tower 1 through the feed pipe 2, and the crude oil associated gas entering the inner cavity of the stabilization tower 1 will be separated into gas and liquid through the flash separation device body 11, and the separated gas will be discharged into the inner cavity of the stabilization tower 1 through the top of the flash separation device body 11, and the gas will be liquefied through the external condensation equipment, and a part of the liquefied gas will be filtered through the first filter plate 12, and the filtered liquid will pass through the first filter plate 12. The liquid is discharged through the liquid outlet pipe 6 for collection, and the other part will adhere to the side of the stabilizing tower 1 and the supporting baffle 7. At this time, it is necessary to drive the cylinder 3, and then drive the connecting rod 17 to perform telescopic movement through the telescopic movement of the telescopic rod 15. The telescopic movement of the connecting rod 17 can drive the first scraper 16 that is in contact with the inner wall of the stabilizing tower 1 and the second scraper 18 and the third scraper 20 that are in contact with the side of the supporting baffle 7 to perform telescopic movement, thereby cleaning the inner wall of the stabilizing tower 1 and the side of the supporting baffle 7, preventing impurities from adhering, and improving the collection effect of the gas after liquefaction;

[0030] The separated liquid will be discharged through the bottom end of the flash separation device body 11 and filtered through the filter baffle 14, thereby filtering impurities in the liquid and further improving the filtering effect. The filtered liquid can be discharged through the receiving pipe 4 for collection.

[0031] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A crude oil associated gas flash separation device, comprising a stabilization tower (1), characterized in that: A feed pipe (2) for feeding and an outlet pipe (5) for discharging are fixedly mounted on the outer wall of the stabilization tower (1); a flash separation device body (11) is arranged between the feed pipe (2) and the outlet pipe (5); the flash separation device body (11) is fixedly mounted in the inner cavity of the stabilization tower (1) via a supporting partition (7); a scraping mechanism is arranged on the side of the flash separation device body (11); and a filtering assembly is arranged at the bottom end of the scraping mechanism; The scraping mechanism comprises a telescopic rod (15) arranged in the inner cavity of the stabilizing tower (1), a first scraper (16) and a second connecting plate (19) are arranged on the periphery of the telescopic rod (15), the first scraper (16) and the second connecting plate (19) are both fixedly connected to the bottom end of the telescopic rod (15) via a connecting rod (17), and a second scraper (18) and a third scraper (20) are arranged on the side of the second connecting plate (19).

2. A crude oil associated gas flash separation device according to claim 1, characterized in that: The second scraper (18) is fixedly mounted on the top end of the second connecting plate (19) on a side away from the connecting rod (17), and the third scraper (20) is fixed on the bottom end of the second connecting plate (19) on a side away from the connecting rod (17).

3. A crude oil associated gas flash separation device according to claim 2, characterized in that: A leak hole (21) is provided on the top of the third scraper (20), and the third scraper (20) and the second scraper (18) are symmetrically arranged on the side of the second connecting plate (19).

4. The crude oil associated gas flash separation device according to claim 1, characterized in that: A cylinder (3) is provided at the top end of the telescopic rod (15), a top cover (8) is fixedly mounted on the side of the cylinder (3), the top cover (8) is fixedly mounted on the top of the inner cavity of the stabilizing tower (1), and an output end of the cylinder (3) passes through the side of the top cover (8) and is fixedly connected to an end of the telescopic rod (15) away from the connecting rod (17).

5. The crude oil associated gas flash separation device according to claim 1, characterized in that: The filter assembly comprises a first filter plate (12), a partition plate (13) and a filter baffle (14) are installed on the side of the first filter plate (12), the ends of the partition plate (13) and the filter baffle (14) away from the first filter plate (12) are respectively installed on the supporting partition plate (7) and the inner wall of the stabilizing tower (1), a liquid outlet pipe (6) is fixedly installed at the bottom end of the first filter plate (12), first connecting plates (9) are arranged on both sides of the first filter plate (12), and the first connecting plate (9) is fixedly connected to the stabilizing tower (1) and the first filter plate (12) by bolts (10).

6. The crude oil associated gas flash separation device according to claim 1, characterized in that: A material receiving pipe (4) is fixedly mounted on the bottom end of the stabilizing tower (1).

Images