Novel membrane recovery oil gas treatment device for gas station

Abstract

The utility model relates to the technical field of oil gas recovery, in particular to a novel membrane recovery oil gas treatment device for a gas station, which comprises an oil-water separation barrel, a sealing cover structure is screwed on an upper opening of the oil-water separation barrel, a membrane separation structure is fixedly mounted at the bottom of the sealing cover structure, and the sealing cover structure comprises a cover body. The membrane separation structure comprises an inner net barrel and an outer net barrel, a first interlayer is arranged in the barrel wall of the inner net barrel and filled with an oil selective membrane, a second interlayer is arranged in the barrel wall of the outer net barrel and filled with a water selective membrane, and the water selective membrane is filled with a water selective membrane. And the lower opening of the infiltration groove is communicated with a gap between the inner net cylinder and the outer net cylinder. According to the oil-gas separator, the oil-gas mixture is guided by the inclined bottom of the permeation groove and permeates into a gap between the inner net cylinder and the outer net cylinder, so that the oil-gas mixture is in contact with the inner net cylinder and the outer net cylinder in a film shape, and the separation speed of water and oil in the oil-gas mixture is increased.

Description

Technical Field

[0001] The utility model relates to the technical field of oil and gas recovery, and specifically relates to a new type of membrane recovery oil and gas treatment device for gas stations. Background Technique

[0002] During the process of refueling vehicles at gas stations, a large amount of oil and gas is released. These oil and gas not only cause environmental pollution but also may have an impact on human health. Therefore, developing a new type of membrane recovery oil and gas treatment device is of great significance for reducing environmental pollution and improving energy utilization efficiency.

[0003] In the oil and gas recovery system, the membrane separation device is an important component of the overall system, mainly used for separating water and oil from the recovered oil and gas mixture and purifying the oil phase. For the current membrane separation device, in order to ensure sufficient contact between the mixture and the membrane and maintain the transmembrane rate, the transmembrane is in a planar state and a large area is paved, which will occupy a certain space, thereby causing the volume of the overall device to increase. Content of the Utility Model

[0004] The purpose of the utility model is to provide a new type of membrane recovery oil and gas treatment device for gas stations to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A new type of membrane recovery oil and gas treatment device for gas stations includes an oil-water separation barrel. A cover structure is screwed to the upper opening of the oil-water separation barrel. A membrane separation structure is fixedly installed at the bottom of the cover structure. The cover structure includes a cover body. An infiltration groove is opened inside the cover body. An oil and gas inlet interface communicating with the infiltration groove is fixedly installed on one side of the upper surface of the cover body. The membrane separation structure includes an inner net cylinder and an outer net cylinder. A first interlayer is opened inside the wall of the inner net cylinder, and an oil-selective membrane is filled in the first interlayer. A second interlayer is opened inside the wall of the outer net cylinder, and a water-selective membrane is filled in the second interlayer. The lower opening of the infiltration groove communicates with the gap between the inner net cylinder and the outer net cylinder.

[0007] Furthermore: The oil-water separation barrel includes a barrel body. A separation groove is opened inside the barrel body. A screw port is opened at the upper opening of the separation groove. A drainage interface communicating with the separation groove is fixedly installed at the bottom of the barrel body.

[0008] Furthermore: Handles are fixedly installed at the edges on both sides of the upper surface of the cover body.

[0009] Furthermore, an oil extraction pipe is fixedly installed in the middle of the bottom side of the cover body, and a plurality of oil extraction ports are formed in a circular shape at equal angles on the opening edge of the lower end of the oil extraction pipe. An oil extraction interface connected with the upper opening of the oil extraction pipe is fixedly installed in the middle of the upper surface of the cover body.

[0010] Furthermore, the cover body and the screw opening are screwed together.

[0011] Furthermore, the inner net tube is fixedly installed on the inner edge of the lower opening of the infiltration groove, and the outer net tube is fixedly installed on the outer edge of the lower opening of the infiltration groove.

[0012] Furthermore, the outer wall of the outer net tube and the side wall of the separation tank are spaced apart by a distance equal to half the thickness of the outer net tube wall, and the lower end of the oil pumping pipe and the inner bottom of the inner net tube abut against each other.

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

[0014] 1. The recovered oil-gas mixture after impurity filtration is passed into the infiltration tank, and guided by the inclined bottom of the infiltration tank, it infiltrates into the gap between the inner and outer mesh tubes, and the oil-gas mixture is brought into contact with the inner and outer mesh tubes in the form of a thin film, which accelerates the separation rate of water and oil in the oil-gas mixture. At the same time, the characteristics of the water phase at the bottom and the oil phase at the top are utilized when the water and oil are layered, and the selective permeability of the oil selective membrane and the water selective membrane to the water phase and the oil phase are utilized respectively, so that the water phase passes through the outer mesh tube and the water selective membrane to separate the oil and water.

[0015] 2. The membrane is stretched out in a ring-shaped manner in the form of a sandwich membrane inside the mesh tube to ensure that the oil-gas mixture can fully contact the two membranes while reducing the space occupied by the membrane. At the same time, the inner mesh tube and the outer mesh tube are equivalent to the filter structure, which can perform secondary filtration on the impurities in the oil-water mixture and avoid direct contact between these impurities and the membrane, providing a certain protective effect on the membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 It is a cross-sectional view of the overall structure of the utility model;

[0018] Figure 3 This is a schematic diagram of the oil-water separation barrel in the utility model;

[0019] Figure 4 This is a disassembled diagram of the sealing structure and the membrane separation structure in the utility model.

[0020] In the figure: 1. Oil-water separation barrel; 101. Barrel body; 102. Separation tank; 103. Swirling port; 104. Drainage interface; 2. Cover structure; 201. Cover body; 202. Handle; 203. Infiltration tank; 204. Oil and gas inlet interface; 205. Oil suction pipe; 206. Oil suction port; 207. Oil suction interface; 3. Membrane separation structure; 301. Inner net cylinder; 302. First interlayer; 303. Oil-selective membrane; 304. Outer net cylinder; 305. Second interlayer; 306. Water-selective membrane. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 to 4 , in the embodiment of the present invention, a new type of membrane recovery oil and gas treatment device for gas stations includes an oil-water separation barrel 1. A cover structure 2 is screwed to the upper opening of the oil-water separation barrel 1. A membrane separation structure 3 is fixedly installed at the bottom of the cover structure 2. The cover structure 2 includes a cover body 201. An infiltration tank 203 is opened inside the cover body 201. An oil and gas inlet interface 204 communicating with the infiltration tank 203 is fixedly installed on one side of the upper surface of the cover body 201. The membrane separation structure 3 includes an inner net cylinder 301 and an outer net cylinder 304. A first interlayer 302 is opened inside the wall of the inner net cylinder 301. An oil-selective membrane 303 is filled in the first interlayer 302. A second interlayer 305 is opened inside the wall of the outer net cylinder 304. A water-selective membrane 306 is filled in the second interlayer 305. The lower opening of the infiltration tank 203 communicates with the gap between the inner net cylinder 301 and the outer net cylinder 304.

[0023] Specifically, the recovered oil-gas mixture after impurity filtration is passed into the infiltration tank 203, and is guided by the inclined bottom of the infiltration tank 203 to infiltrate into the gap between the inner net tube 301 and the outer net tube 304, so that the oil-gas mixture contacts the inner net tube 301 and the outer net tube 304 in a thin film form, thereby accelerating the separation speed of water and oil in the oil-gas mixture. At the same time, the water phase is at the bottom and the oil phase is at the top when the water and oil are separated, and then the oil selective membrane 303 and the water selective membrane 306 are used to select the water phase and the oil phase respectively. The permeability allows the water phase to pass through the outer mesh tube 304 and the water selective membrane 306 to separate oil and water. The permeable membrane is stretched out in a ring-shaped posture in the form of a sandwich permeable membrane inside the mesh tube, ensuring that the oil-gas mixture can fully contact with the two permeable membranes while reducing the space occupied by the unfolding of the permeable membrane. At the same time, the inner mesh tube 301 and the outer mesh tube 304 are equivalent to a filter structure, which can perform secondary filtration on impurities in the oil-water mixture and prevent these impurities from directly contacting the permeable membrane, providing a certain protection effect on the permeable membrane. Embodiment 1

[0024] like Figures 2 - 4 As shown, in the present embodiment, the oil-water separation barrel 1 comprises a barrel body 101, a separation groove 102 is opened inside the barrel body 101, a drainage interface 104 which is interconnected with the separation groove 102 is fixedly installed at the bottom of the barrel body 101; an oil extraction pipe 205 is fixedly installed in the middle of the bottom side of the cover body 201, and a plurality of oil extraction ports 206 are opened in a circular shape at equal angles on the opening edge of the lower end of the oil extraction pipe 205, and an oil extraction interface 207 which is interconnected with the upper opening of the oil extraction pipe 205 is fixedly installed in the middle of the upper surface of the cover body 201.

[0025] In this embodiment, during separation, the water phase passes through the water selective membrane 306 and is collected at the bottom of the separation tank 102 and discharged from the drainage interface 104. The oil phase passes through the oil selective membrane 303 and is collected inside the inner net tube 301. The oil phase inside the inner net tube 301 is extracted through the oil extraction pipe 205.

[0026] like Figure 2 As shown, in this embodiment, the outer wall of the outer net tube 304 is spaced from the side wall of the separation tank 102 by half the thickness of the outer net tube 304 wall, and the lower end of the oil pumping pipe 205 abuts against the inner bottom of the inner net tube 301 .

[0027] During specific implementation, the membrane separation structure 3 is suspended at the bottom of the cover body 201 and extends into the separation tank 102, while leaving a certain gap between the outer wall of the outer net cylinder 304 and the inner wall of the separation tank 102 to prevent the inner wall of the separation tank 102 from blocking the mesh of the outer net cylinder 304 and affecting normal discharge. Embodiment 2

[0028] On the basis of the first embodiment, in order to make up for the situation in the first embodiment where the inner cylinder 301 and the outer cylinder 304 are used as the secondary filtering structure, and too much impurities filtered out accumulate, blocking the meshes of the inner cylinder 301 and the outer cylinder 304, affecting the normal passage of the aqueous phase and the oil phase through the membrane.

[0029] As Figures 2 - 4 shown, in this embodiment, a swivel opening 103 is provided at the upper opening of the separation tank 102; handles 202 are fixedly installed on both side edges of the upper surface of the cover body 201; the cover body 201 is screwed with the swivel opening 103; the inner cylinder 301 is fixedly installed on the inner edge of the lower opening of the infiltration tank 203, and the outer cylinder 304 is fixedly installed on the outer edge of the lower opening of the infiltration tank 203.

[0030] During specific implementation, the membrane separation structure 3 is hoisted on the bottom side of the cover body 201. The cover body 201 can be unscrewed from the swivel opening 103 through the handle 202, and the membrane separation structure 3 can be pulled out, which is convenient for replacing the oil-selective membrane 303 and the water-selective membrane 306.

[0031] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claims involved.

[0032] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A novel membrane oil and gas recovery processing device for a gas station, comprising an oil-water separation barrel (1), characterized in that: The oil-water separation barrel (1) has an upper opening screwed with a sealing structure (2), a bottom of the sealing structure (2) having a membrane separation structure (3) fixedly mounted thereon, the sealing structure (2) comprising a cover body (201), an infiltration groove (203) being provided inside the cover body (201), an oil and gas inlet interface (204) being in communication with the infiltration groove (203) being fixedly mounted on one side of the upper surface of the cover body (201), the membrane separation structure (3) comprising an inner net cylinder (301 ) and an outer net tube (304), wherein the inner net tube (301) has a first interlayer (302) in its wall, and the first interlayer (302) is filled with an oil selective membrane (303), and the outer net tube (304) has a second interlayer (305) in its wall, and the second interlayer (305) is filled with a water selective membrane (306), and the lower opening of the infiltration groove (203) is connected to the gap between the inner net tube (301) and the outer net tube (304).

2. A novel membrane oil and gas processing device for gas stations according to claim 1, characterized in that: The oil-water separation barrel (1) comprises a barrel body (101), a separation groove (102) is provided inside the barrel body (101), a screw opening (103) is provided on the upper opening of the separation groove (102), and a drainage interface (104) which is in communication with the separation groove (102) is fixedly mounted on the bottom of the barrel body (101).

3. A novel membrane oil and gas processing device for gas stations according to claim 2, characterized in that: Handles (202) are fixedly mounted on both side edges of the upper surface of the cover body (201).

4. A novel membrane oil and gas processing device for gas stations according to claim 3, characterized in that: An oil extraction pipe (205) is fixedly mounted in the middle of the bottom side of the cover body (201), a plurality of oil extraction ports (206) are provided in a circular shape at equal angles on the opening edge of the lower end of the oil extraction pipe (205), and an oil extraction interface (207) is fixedly mounted in the middle of the upper surface of the cover body (201) and is interconnected with the upper opening of the oil extraction pipe (205).

5. A novel membrane oil and gas processing device for gas stations according to claim 4, characterized in that: The cover body (201) and the screw opening (103) are screwed together.

6. A novel membrane oil and gas processing device for gas stations according to claim 5, characterized in that: The inner net cylinder (301) is fixedly mounted on the inner edge of the lower opening of the infiltration groove (203), and the outer net cylinder (304) is fixedly mounted on the outer edge of the lower opening of the infiltration groove (203).

7. A novel membrane oil and gas processing device for gas stations according to claim 6, characterized in that: The outer wall of the outer net cylinder (304) and the side wall of the separation tank (102) are spaced apart by a distance equal to half the thickness of the outer net cylinder (304) wall, and the lower end of the oil pumping pipe (205) and the inner bottom of the inner net cylinder (301) are in contact with each other.

Images