Light oil recovery device for petroleum atmospheric and vacuum distillation

Abstract

The utility model provides a petroleum atmospheric and vacuum distillation light oil recovery device, and relates to the technical field of light oil recovery, the petroleum atmospheric and vacuum distillation light oil recovery device comprises a recovery box and a gas collection tank used for collecting light oil gas, the inner box wall of one side of the recovery box is rotatably connected with a turntable, and one surface of the turntable is fixedly connected with a plurality of annular filter screens which are mutually sleeved and are in clearance fit; the annular filter screens coincide with the center line of the rotary disc, the annular filter screens are used for filtering petroleum layer by layer, and the apertures of screen holes of the annular filter screens are gradually reduced from outside to inside, that is, impurities in the petroleum are blocked on the outer walls of the annular filter screens according to the particle size, and a large number of impurities can be prevented from being accumulated on a certain annular filter screen; the surface blocking time of the annular filter screen is delayed, and it is guaranteed that petroleum smoothly passes through the annular filter screen to be filtered.

Description

Technical Field

[0001] The utility model relates to the technical field of light oil recovery, in particular to a light oil recovery device for petroleum atmospheric and vacuum distillation. Background Art

[0002] Naphtha is one of the products obtained after petroleum distillation. It is also called chemical light oil and crude gasoline. It is a light oil used for chemical raw materials produced by processing crude oil or other raw materials. It is mainly used as a chemical raw material. Naphtha is a light oil product obtained by distilling crude oil or cutting the corresponding fractions from secondary processing of petroleum. Therefore, in order to facilitate the recovery of light oil.

[0003] Therefore, a petroleum atmospheric and vacuum distillation light oil recovery device in the prior art has a publication number of CN212560105U. The crude oil is introduced into the recovery box through the oil inlet connecting pipe and filtered through the filter screen to filter the impurities in the crude oil. Since the crude oil contains a large amount of light oil and gas, it is discharged into the gas collecting tank through the air guide pipe for collection and storage. The electric telescopic rod is controlled to work and the soft brush can be pushed to move left and right on the filter screen, and the impurities on the filter screen can be automatically cleaned through the cleaning port and stored in the collection tank.

[0004] However, during the filtration process of the filter plate, impurities in the crude oil will be blocked on the surface of the filter plate, resulting in a reduction in the filtration effect of the filter plate surface. That is, the crude oil falling on the filter plate cannot pass through the filter plate quickly, but will stay on the surface of the filter plate for a period of time. During the retention period, the crude oil flows on the surface of the filter plate and may enter the collection tank along the cleaning port, causing this part of the crude oil to need to be extracted twice to the surface of the filter plate for secondary filtration, which affects the filtration efficiency of the crude oil. Utility Model Content

[0005] The utility model aims to solve the problems existing in the prior art and proposes a petroleum atmospheric and vacuum distillation light oil recovery device.

[0006] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a petroleum atmospheric and vacuum distillation light oil recovery device, comprising a recovery box and a gas collecting tank for collecting light oil and gas, the inner box wall on one side of the recovery box is rotatably connected to a turntable, one side of the turntable is fixedly connected to a plurality of annular filter screens which are mutually sleeved and gap-matched, a plurality of the annular filter screens coincide with the center line of the turntable, and a plurality of annular filter screens are used for layer-by-layer filtering of petroleum, the inner box wall on the other side of the recovery box is fixedly connected to a plurality of sealing plug plates which are slidably connected to the inner and outer walls of the annular filter screen, a plurality of sealing plug plates are linearly distributed in the plane where the center line of the turntable is located, and the inner and outer walls of two adjacent annular filter screens, the outer annular filter screen and the inner wall of the recovery box, and the inner annular filter screen are all provided with sealing plug plates, the inner and outer walls of two adjacent annular filter screens, the outer annular filter screen and the inner wall of the recovery box, and the inner annular filter screen are all slidably connected to sealing strips located above the sealing plug plates, and the inner box wall on the other side of the recovery box is fixedly connected to an oil outlet pipe which passes through the sealing strip inside the inner annular filter screen.

[0007] Preferably, the upper surface of the sealing plug plate in the inner annular filter screen is arranged as an inclined surface.

[0008] Preferably, the other inner wall of the recovery box is located above the sealing plug plate, and a screw rod is rotatably connected to each outer wall position of the annular filter, and a scraper for cleaning the surface of the annular filter above the sealing plug plate is threaded through the screw rod.

[0009] Preferably, the end face of the screw rod located outside the recovery box is fixedly connected to an end face gear, and a transmission gear rotatably connected to the outer wall of the recovery box is meshed and connected between two adjacent end face gears.

[0010] Preferably, an electric push rod is fixedly connected to the inner box wall on the other side of the recycling box, and the telescopic end of the electric push rod is fixedly connected to a connecting frame connected to both sides of a plurality of sealing strips.

[0011] Preferably, the box wall on the other side of the recovery box is located below the sealing plug plate, and a blowing pipe is fixedly connected to each annular filter screen through which the air outlet of the blowing pipe faces the inner wall of the annular filter screen; the box wall on the other side of the recovery box is located below the sealing plug plate, and an air collecting pipe is fixedly connected to the outer side of each annular filter screen through which the air inlet of the air collecting pipe faces the air outlet of the blowing pipe in the same annular filter screen.

[0012] Preferably, the air inlets of the plurality of blowing ducts and the air outlets of the plurality of air collecting ducts are all located outside the recovery box, and the air inlets of the blowing ducts and the air outlets of the air collecting ducts are both provided with fans.

[0013] Compared with the prior art, the advantages and positive effects of the utility model are:

[0014] 1. In the utility model, the apertures of the sieve holes of the annular filters are gradually reduced from the outside to the inside, that is, the impurities in the oil are blocked on the outer walls of the annular filters according to the particle size, which can prevent a large amount of impurities from accumulating on a certain annular filter, that is, delay the time of clogging of the surface of the annular filter, and ensure that the oil can be filtered smoothly through the annular filter.

[0015] 2. In the utility model, by arranging a scraper, a sealing strip, a blowing pipe and an air collecting pipe, the scraper and the sealing strip are used in cooperation to achieve the treatment of impurities filtered at the outer wall of the annular filter, while the blowing pipe and the air collecting pipe can achieve the treatment of blowing out impurities in the sieve holes on the surface of the annular filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model proposes a three-dimensional structural schematic diagram of a petroleum atmospheric and vacuum distillation light oil recovery device;

[0017] Figure 2 The utility model proposes a petroleum atmospheric and vacuum distillation light oil recovery device Figure 1 Schematic diagram of the structure viewed from above;

[0018] Figure 3 The utility model proposes a petroleum atmospheric and vacuum distillation light oil recovery device Figure 1 Schematic diagram of the cross-section structure;

[0019] Figure 4 for Figure 1 Schematic diagram of the side section structure:

[0020] Figure 5 for Figure 4 Schematic diagram of the rear cross-section structure.

[0021] Legend: 1. Recovery box; 2. Air collecting tank; 3. End gear; 4. Electric push rod; 5. Transmission gear; 6. Oil outlet pipe; 7. Fan; 8. Connecting frame; 9. Air collecting duct; 10. Turntable; 11. Annular filter; 12. Screw rod; 13. Scraper; 14. Sealing plate; 15. Sealing strip; 16. Blowing pipe. DETAILED DESCRIPTION

[0022] In order to more clearly understand the above-mentioned purpose, features and advantages of the utility model, the utility model is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0023] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0024] like Figure 1-5As shown, a light oil recovery device for atmospheric and vacuum distillation of petroleum includes a recovery box 1 and a gas collecting tank 2 for collecting light oil and gas. As shown in the figure, the gas collecting tank 2 is connected to the top of the recovery box 1 through a pipeline and is in conduction with the inside of the recovery box 1. A turntable 10 is rotatably connected to the inner wall of one side of the recovery box 1. As shown in the figure, a motor (not numbered in the figure) is installed on the outer wall of one side of the recovery box 1. The main shaft of the motor passes through the side of the recovery box 1 and is fixed to the end face of the turntable 10. Therefore, the turntable 10 is driven to rotate by the motor. One side of the turntable 10 is fixedly connected to a plurality of annular filter screens 11 that are mutually sleeved and have clearance fit. The plurality of annular filter screens 11 coincide with the center line of the turntable 10, and the plurality of annular filter screens 11 are used for layer-by-layer filtering of petroleum. As shown in the figure, the plurality of annular filter screens 11 are composed of The aperture of the sieve hole gradually decreases from the outside to the inside, which can realize the filtration of impurities of different particle sizes in the oil, that is, the impurities in the oil are blocked on the outer walls of several annular filter screens 11 according to the particle size, which can prevent a large amount of impurities from accumulating on a certain annular filter screen 11, that is, delay the clogging time of the surface of the annular filter screen 11, and because the surface of the annular filter screen 11 is set in an arc shape, the filtered impurities will slide down and accumulate on the upper surface of the sealing plug plates 14 on both sides of the annular filter screen 11, that is, it is ensured that most areas of the upper half of the annular filter screen 11 will not have impurities accumulated, and the filtering effect of the oil is guaranteed. The inner box wall on the other side of the recovery box 1 is fixedly connected to a plurality of sealing plug plates 14 slidably connected to the inner and outer walls of the annular filter screen 11, and the plurality of sealing plug plates 14 are linearly distributed on the plane where the center line of the turntable 10 is located The inner and outer walls of the two adjacent annular filters 11, the outer annular filter 11 and the inner wall of the recovery box 1, and the inner annular filter 11 are all provided with sealing plugs 14. The sealing plugs 14 can be used to separate the upper and lower parts of the annular filters 11, that is, to ensure that the crude oil is only filtered through the part of the annular filter 11 located above the sealing plugs 14 and then discharged and collected. The function of dividing the annular filter 11 into two parts is to rotate the turntable 10 to rotate the annular filter 11, and then to swap the upper and lower parts of the annular filter 11, that is, when the filtering effect of the annular filter 11 in the upper part becomes worse, the annular filter 11 in the lower part is rotated to the top of the sealing plugs 14 by swapping the rotation position of the annular filter 11, and the lower annular filter 11 is used to rotate the annular filter 11. The surface sieve holes are clean, and the oil can be filtered smoothly and quickly. After the upper half of the annular filter 11 with blocked sieve holes rotates to the bottom of the sealing plug plate 14, the blocked sieve holes are dredged and wait for the next rotation to be reused. The upper surface of the sealing plug plate 14 in the inner annular filter 11 is set as an inclined surface. The inner and outer walls of the two adjacent annular filters 11, the outer annular filter 11 and the inner wall of the recovery box 1, and the inner annular filter 11 are all slidably connected with a sealing strip 15 located above the sealing plug plate 14. The set sealing strip 15 is set in an arc shape, and is rotatably connected to the surface of the annular filter 11 like the sealing plug plate 14, so it will not interfere with the rotation of the annular filter 11, and the set sealing strip 15 can also prevent unfiltered oil from flowing out of the open end of the annular filter 11.The inner box wall on the other side of the recovery box 1 is penetrated and fixedly connected with an oil outlet pipe 6 passing through the inner sealing strip 15 of the inner annular filter 11. The oil filtered by the several annular filters 11 above the sealing plug plate 14 finally reaches the upper surface of the sealing plug plate 14 in the inner annular filter 11, and flows along its inclined surface to the oil outlet pipe 6 for discharge:

[0025] Further discussion: The other inner wall of the recycling box 1 is located above the sealing plug plate 14, and a screw rod 12 is rotatably connected to the outer wall of each annular filter 11. The screw rod 12 is threaded with a scraper 13 for cleaning the surface of the annular filter 11 located above the sealing plug plate 14, and as shown in the figure, the screw rod 12 and the sealing strip 15 are arranged to penetrate, so there will be no interference with the rotation of the screw rod 12 and the sliding of the sealing strip 15. The scraper 13 is also arranged in an arc shape and is rotatably connected to the corresponding outer wall of the annular filter 11, and will not interfere with the rotation of the annular filter 11. The end face of the screw rod 12 located outside the recycling box 1 is fixedly connected to the end face gear 3, and the two adjacent end face gears 3 are meshed with a transmission gear 5 rotatably connected to the outer wall of the recycling box 1. The transmission gear 5 ensures that the two end face gears 3 meshed with it have the same rotation direction, and as shown in the figure, in the recycling box 1 The outer side of the box wall on the other side is also fixedly connected to a motor (not shown in the figure) for driving one of the end face gears 3 to rotate, so that several screw rods 12 can rotate simultaneously, thereby realizing the movement of the corresponding scraper 13, and scraping the impurities on the outer wall of the corresponding annular filter 11 to the direction of the sealing strip 15. An electric push rod 4 is fixedly connected to the inner box wall on the other side of the recycling box 1, and the telescopic end of the electric push rod 4 is fixedly connected to a connecting frame 8 connected to both sides of several sealing strips 15. When the device temporarily stops filtering oil and cleans the impurities on the outer wall of the annular filter 11, the electric push rod 4 is contracted to realize the connection frame 8 driving the sealing strip 15 to move away from the annular filter 11, so that one end of the annular filter 11 can be opened, so that the impurities scraped by the scraper 13 will fall on the top of the several sealing plug plates 14, and fall on the bottom of the inner box of the recycling box 1 through the gap of the sealing plug plates 14. In addition, Figure 2 As shown, the top of the recovery box 1 has a feed port for pouring oil, and one end of the oil outlet pipe 6 at the bottom of the box is hollowed out to facilitate the removal of impurities:

[0026] Further discussion: The other side of the box wall of the recovery box 1 is located below the sealing plug plate 14, and a blowing pipe 16 is fixedly connected to each annular filter 11, and the air outlet of the blowing pipe 16 faces the inner wall of the annular filter 11. The other side of the box wall of the recovery box 1 is located below the sealing plug plate 14, and a wind collecting pipe 9 is fixedly connected to the outer side of each annular filter 11, and the air inlet of the wind collecting pipe 9 faces the air outlet of the blowing pipe 16 in the same annular filter 11. The air inlets of the blowing pipes 16 and the air outlets of the wind collecting pipes 9 are all located outside the recovery box 1, and the air inlets of the blowing pipes 16 and the air outlets of the wind collecting pipes 9 are all provided with fans. 7. In this solution, the installation positions of the two fans 7 are swapped, that is, the air outlet of one of the fans 7 is aligned with the air inlet of the blowing pipe 16, and the air inlet of the other fan 7 is aligned with the air outlet of the air collecting pipe 9. The two fans 7 are started, and the airflow generated by one of the fans 7 is blown out through the blowing pipe 16. After the annular filter 11 rotates to the air outlet of the blowing pipe 16, the airflow is used to blow out the impurities in the sieve holes of the annular filter 11, and under the suction force of the other fan 7, the blown impurities are sucked into the adjacent air collecting pipe 9, and then extracted by the fan 7 at the corresponding position, thereby achieving double dredging of the annular filter 11.

[0027] Working principle: pour the oil into the recovery box 1 through the box opening on the top of the recovery box 1, and filter the impurities under the layer-by-layer filtering action of the upper part of the several annular filters 11 above the sealing plug plate 14. Finally, the filtered oil flows along the surface of the sealing plug plate 14 in the inner annular filter 11 to the oil outlet pipe 6 for discharge. During the filtering, the light oil gas in the oil is collected by the gas collecting tank 2. After the equipment has been used for a period of time, stop pouring oil into the recovery box 1, use the scraper 13 to move, and clean the impurities on the outside of the annular filter 11. Then, use the turntable 10 to rotate the annular filter 11, and use the blowing pipe 16 and the air collecting pipe 9 to clean the impurities inside the sieve holes of the annular filter 11.

[0028] The wiring diagram of the electric push rod 4, fan 7 and motor in the utility model belongs to the common knowledge in the field, and its working principle is a well-known technology. The model is selected according to the actual use. Therefore, the control method and wiring arrangement of the electric push rod 4, fan 7 and motor are not explained in detail.

[0029] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A light oil recovery device for atmospheric and vacuum distillation of petroleum, comprising a recovery box (1) and a gas collecting tank (2) for collecting light oil gas, characterized in that: A turntable (10) is rotatably connected to the inner box wall of one side of the recovery box (1), and a plurality of annular filter screens (11) which are sleeved and fitted with each other with clearances are fixedly connected to one side of the turntable (10), and the plurality of annular filter screens (11) coincide with the center line of the turntable (10), and the plurality of annular filter screens (11) are used for filtering oil layer by layer; a plurality of sealing plug plates (14) which are slidably connected to the inner and outer walls of the annular filter screens (11) are fixedly connected to the inner box wall of the other side of the recovery box (1), and the plurality of sealing plug plates (14) are linearly distributed in the plane where the center line of the turntable (10) is located. The inner and outer walls of two adjacent annular filters (11), the outer annular filter (11) and the inner wall of the recovery box (1), and the inner annular filter (11) are all provided with sealing plugs (14); the inner and outer walls of the two adjacent annular filters (11), the outer annular filter (11) and the inner wall of the recovery box (1), and the inner annular filter (11) are all slidably connected with a sealing strip (15) located above the sealing plugs (14); and the inner box wall on the other side of the recovery box (1) is penetrated and fixedly connected with an oil outlet pipe (6) passing through the inner sealing strip (15) of the inner annular filter (11).

2. The petroleum atmospheric and vacuum distillation light oil recovery device according to claim 1, characterized in that: The upper surface of the sealing plug plate (14) in the inner annular filter screen (11) is arranged as an inclined surface.

3. The petroleum atmospheric and vacuum distillation light oil recovery device according to claim 1, characterized in that: The other inner wall of the recovery box (1) is located above the sealing plug plate (14), and a screw rod (12) is rotatably connected to the outer wall of each annular filter (11), and a scraper (13) for cleaning the surface of the annular filter (11) located above the sealing plug plate (14) is threadedly penetrated on the screw rod (12).

4. The petroleum atmospheric and vacuum distillation light oil recovery device according to claim 3, characterized in that: The end face of the screw rod (12) located outside the recovery box (1) is fixedly connected to an end face gear (3), and two adjacent end face gears (3) are meshedly connected to a transmission gear (5) rotatably connected to the outer wall of the recovery box (1).

5. The petroleum atmospheric and vacuum distillation light oil recovery device according to claim 1, characterized in that: An electric push rod (4) is fixedly connected to the inner box wall on the other side of the recovery box (1), and the telescopic end of the electric push rod (4) is fixedly connected to a connecting frame (8) connected to both sides of a plurality of sealing strips (15).

6. The petroleum atmospheric and vacuum distillation light oil recovery device according to claim 1, characterized in that: The other side wall of the recovery box (1) is located below the sealing plug plate (14), and a blowing pipe (16) is fixedly connected to each annular filter (11), and the air outlet of the blowing pipe (16) faces the inner wall of the annular filter (11). The other side wall of the recovery box (1) is located below the sealing plug plate (14), and a wind collecting pipe (9) is fixedly connected to the outer side of each annular filter (11), and the air inlet of the wind collecting pipe (9) faces the air outlet of the blowing pipe (16) in the same annular filter (11).

7. The petroleum atmospheric and vacuum distillation light oil recovery device according to claim 6, characterized in that: The air inlets of the plurality of blowing pipes (16) and the air outlets of the plurality of air collecting pipes (9) are all located outside the recovery box (1), and the air inlets of the blowing pipes (16) and the air outlets of the air collecting pipes (9) are all provided with fans (7).

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