Demulsification separator for treating oily wastewater in water conservancy and hydropower engineering

Abstract

The utility model provides a demulsification separator for treating oily wastewater in water conservancy and hydropower engineering. The demulsification separator comprises a tank body, a water drainage pipe, an oil drainage pipe, a top feeding pipe, a flow guide conical piece, an oil-water separation membrane, a flow dividing ring, a material distributing pipe and a flow guide pipe. Through the arrangement of the top feeding pipe, the material distributing pipe, the flow distributing ring, the oil-water separation membrane, the flow guide conical piece and the flow guide pipe, an oil-water mixture added with a demulsifier enters the material distributing pipe from the top feeding pipe, flows into the flow distributing ring and flows into the surface of the oil-water separation membrane from the flow distributing ring, and the oil-water separation membrane performs oil-water separation; a water body penetrates through the membrane body to fall on the flow guide conical part and finally flows into the lower cavity in the tank body through the flow guide pipe, and the separated oil body drips into the oil discharge pipe from the center of the oil-water separation membrane, so that the separation rate of the oil body and the water body is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of oil-water separation, in particular to a demulsifier separator for treating oily wastewater in water conservancy and hydropower engineering. Background Art

[0002] The oil-water separator is a device that separates oil and water. The principle is mainly based on the density difference between water and oil, and uses the principle of gravity sedimentation to separate oil and water. It is mainly used in the petrochemical industry, automobile industry, sewage treatment industry, etc.

[0003] Patent Publication No.: CN204265485U discloses a demulsifier separator for treating oily wastewater in water conservancy and hydropower projects. Through the coordinated arrangement of an injection pipe, a distribution plate, an oil distribution pipe and a plurality of slideways, the inlet and separation height of the mixture are effectively adjustable. The distribution plate is driven to descend or rise along the plurality of slideways by the descent or ascent of the injection pipe, thereby achieving the effect of mechanically stirring the mixture. The oil distribution pipe achieves the effect of adjustable distance between the top of the oil distribution pipe and the distribution plate through a sliding connection with the distribution plate, thereby more effectively collecting rising oil droplets to achieve the purpose of separating oils of different densities or oil-water.

[0004] The above patent has the following problems: when separating the oil-water mixture, the oil and water are automatically separated under the action of gravity only by adding a demulsifier, and the separation rate is slow, so the separation effect cannot be guaranteed. Utility Model Content

[0005] In view of the defects in the prior art, the utility model provides an emulsion separator for treating oily wastewater in water conservancy and hydropower projects, which can effectively solve the above problems.

[0006] The technical solution adopted by the utility model is as follows:

[0007] The utility model provides an emulsion separator for treating oily wastewater in water conservancy and hydropower engineering, comprising a tank body (1), a drainage pipe (3), an oil discharge pipe (4), a top feed pipe (7), a guide cone (9), an oil-water separation membrane (10), a flow distribution ring (11), a material distribution pipe (12) and a flow guide pipe (14);

[0008] The top center of the tank body (1) is connected to the top feed pipe (7); the diverter ring (11) is arranged inside the tank body (1) and below the top feed pipe (7), and is in close contact with the annular inner wall of the tank body (1); a plurality of diverter pipes (12) are radially connected between the discharge end of the top feed pipe (7) and the diverter ring (11); the oil-water separation membrane (10) is arranged below the diverter ring (11); the guide cone (9) is arranged below the oil-water separation membrane (10), and the lower surface edge of the guide cone (9) is dispersedly connected to a plurality of vertically arranged guide pipes (14);

[0009] The oil inlet of the oil drain pipe (4) is located directly below the center of the oil-water separation membrane (10) and is connected to the center of the oil-water separation membrane (10); the oil drain port of the oil drain pipe (4) extends from the bottom of the tank body (1); and the drain pipe (3) is provided on the lower side wall of the tank body (1).

[0010] Preferably, the distribution pipe (12) is arranged at an angle.

[0011] Preferably, the oil-water separation membrane (10) is in the shape of a conical funnel, the conical surface is the oil-water separation membrane portion, the conical bottom is the oil phase gathering position, and a conduit is arranged at the conical bottom.

[0012] Preferably, the guide cone (9) is a conical slope, the top of which is located directly below the bottom of the oil-water separation membrane (10), and a through hole for the oil phase to pass through is provided at the top of the guide cone (9).

[0013] Preferably, a distribution plate (8) can be slidably mounted up and down at a position close to the oil inlet of the oil discharge pipe (4), and the distribution plate (8) is located below the guide cone (9).

[0014] Preferably, the distribution plate (8) is provided with distribution holes.

[0015] Preferably, a floating ring (13) is slidably mounted outside the oil discharge pipe (4) and below the distribution plate (8).

[0016] Preferably, a side feed pipe (2) is provided on the side wall of the tank body (1); the side feed pipe (2) is located below the flow guide pipe (14).

[0017] Preferably, an observation window (5) is provided on the side wall of the tank body (1).

[0018] Preferably, support legs (6) are installed at the bottom of the tank body (1).

[0019] The utility model provides a demulsifier separator for treating oily wastewater in water conservancy and hydropower projects, which has the following advantages:

[0020] The utility model provides a top feed pipe, a feed distribution pipe, a flow diversion ring, an oil-water separation membrane, a flow guide cone and a flow guide pipe, so that the oil-water mixture after adding a demulsifier enters the feed distribution pipe from the top feed pipe, flows into the flow diversion ring, and flows from the flow diversion ring into the surface of the oil-water separation membrane. The oil-water separation membrane separates the oil and water, and the water passes through the membrane and falls on the flow guide cone, and finally flows into the lower cavity of the tank body through the flow guide pipe. The separated oil drips from the center of the oil-water separation membrane into the oil discharge pipe, so that the separation rate of the oil and water is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a main view of a demulsifier separator for treating oily wastewater in water conservancy and hydropower projects provided by the utility model;

[0022] Figure 2 A schematic cross-sectional view of the structure of a demulsifier separator for treating oily wastewater in water conservancy and hydropower projects provided by the utility model;

[0023] Figure 3 A schematic diagram of the exploded structure of the flow diverter ring, the oil-water separation membrane, the flow guide cone and the flow guide pipe provided by the utility model;

[0024] Figure 4 A schematic diagram of the top view of the material distribution pipe and the flow distribution ring provided by the utility model;

[0025] Figure 5 This is a structural schematic diagram of the floating ring provided by the utility model.

[0026] In the figure: 1. tank body; 2. side feed pipe; 3. drain pipe; 4. oil drain pipe; 5. observation window; 6. support leg; 7. top feed pipe; 8. distribution plate; 9. guide cone; 10. oil-water separation membrane; 11. diverter ring; 12. feed pipe; 13. floating ring; 14. guide pipe. DETAILED DESCRIPTION

[0027] 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.

[0028] See also Figure 1-4The utility model provides a demulsifier separator for treating oily wastewater in water conservancy and hydropower projects, which relates to the technical field of oil-water separation, and includes a tank body 1, a drain pipe 3, an oil drain pipe 4, a top feed pipe 7, a guide cone 9, an oil-water separation membrane 10, a diverter ring 11, a distribution pipe 12 and a diversion pipe 14;

[0029] The top center of the tank body 1 is connected to the top feed pipe 7; inside the tank body 1 and below the top feed pipe 7, a diverter ring 11 is provided, which is in close contact with the annular inner wall of the tank body 1, and the diverter ring 11 can be connected to the tank body 1 by bolts. Between the discharge end of the top feed pipe 7 and the diverter ring 11, multiple diverter pipes 12 are radially connected, one end of the diverter pipe 12 is welded to the top feed pipe 7, and the other end is welded to the diverter ring 11. Figure 4 In the embodiment, a total of 4 material distribution pipes 12 are provided; the material distribution pipes 12 are provided at an angle.

[0030] An oil-water separation membrane 10 is arranged below the diverter ring 11; the oil-water separation membrane 10 can be connected to the diverter ring 11 by clamping. The oil-water separation membrane 10 is in the shape of a conical funnel, the conical surface is the oil-water separation membrane part, the conical bottom is the oil phase gathering position, and a conduit is arranged at the conical bottom.

[0031] A guide cone 9 is arranged below the oil-water separation membrane 10, and the guide cone 9 is connected to the inner side of the tank body 1 by bolts. The guide cone 9 is a conical slope, and its cone top is located directly below the cone bottom of the oil-water separation membrane 10, and a through hole for the oil phase to pass through is opened at the cone top of the guide cone 9.

[0032] The lower surface edge of the guide cone 9 is dispersedly connected to multiple vertically arranged guide pipes 14; the guide pipes 14 are welded to the guide cone 9, the oil inlet of the oil drain pipe 4 is located directly below the center of the oil-water separation membrane 10 and is connected to the center of the oil-water separation membrane 10; the oil discharge port of the oil drain pipe 4 extends from the bottom of the tank body 1; the drain pipe 3 is opened on the lower side wall of the tank body 1.

[0033] At the position near the oil inlet of the oil discharge pipe 4, a distribution plate 8 can be installed and slidably mounted up and down, and the distribution plate 8 is located below the guide cone 9. The distribution plate 8 can be located inside each guide pipe 14 and plugged with the guide pipe 14, and the distribution plate 8 has distribution holes. The floating ring 13 is slidably installed outside the oil discharge pipe 4 and below the distribution plate 8, such as Figure 5 FIG. 1 is a structural diagram of the floating ring 13 .

[0034] The side wall of the tank body 1 is provided with a side feed pipe 2, which is located below the flow guide pipe 14 and is arranged on the other side opposite to the drain pipe 3. The side wall of the tank body 1 is provided with an observation window 5, through which the liquid level of the oil-water mixture inside the tank body 1 can be observed. A support leg 6 is installed at the bottom of the tank body 1.

[0035] The utility model provides a demulsifier separator for treating oily wastewater in water conservancy and hydropower projects, and its working principle is:

[0036] (1) When the oil-water mixture needs to be separated, most of the oil-water mixture is mixed with the demulsifier to form an oil-water mixture mixed with the demulsifier, and the oil-water mixture mixed with the demulsifier enters the top feed pipe 7. The oil-water mixture output from the top feed pipe 7 flows into each distribution pipe 12, and after being divided by the distribution pipe 12, flows into the splitting ring 11;

[0037] (2) The oil-water mixture flows out from the annular gap of the diverter ring 11 and flows into the surface of the oil-water separation membrane 10. Since the annular gap of the diverter ring 11 is located above the circumferential edge of the oil-water separation membrane 10, the water curtain-like oil-water mixture flowing out from the annular gap of the diverter ring 11 first falls evenly on the upper edge of the conical surface of the conical funnel-shaped oil-water separation membrane 10, and then the oil-water mixture slides evenly toward the bottom of the cone along the conical surface of the oil-water separation membrane 10. During the sliding process of the oil-water mixture, the oil-water separation membrane 10 separates the oil-water mixture from the oil-water mixture, and the separated water body passes through the oil-water separation membrane 10 and drips onto the surface of the guide cone 9 below; the separated oil body gathers at the bottom of the cone of the oil-water separation membrane 10, and falls into the oil discharge pipe 4 through the conduit arranged at the bottom of the cone, and is discharged through the oil discharge pipe 4. In the utility model, the oil-water mixture is first divided by the dividing pipe 12, and then the oil-water mixture is changed into a water curtain shape by the diverter ring 11, and finally the oil-water separation is carried out by the oil-water separation membrane 10. With this method, on the one hand, the oil-water mixture falling into the oil-water separation membrane 10 can be made more uniform, thereby improving the oil-water separation effect; on the other hand, the oil-water separation membrane 10 is in the shape of a conical funnel, which can increase the flow area of ​​the oil-water mixture, thereby improving the oil-water separation effect.

[0038] (3) The separated water falls onto the surface of the guide cone 9, slides along the conical slope of the guide cone 9, gathers at the bottom edge of the guide cone 9, and then flows into the guide pipe 14. After being guided by the guide pipe 14, it flows into the lower cavity in the tank body 1. The water in the tank body 1 can continue to separate oil and water by gravity alone, thereby improving the oil-water separation efficiency.

[0039] (4) In addition, a small amount of oil-water mixture is fed into the lower cavity of the tank body 1 through the side feed pipe 2, and the delivery amount of the side feed pipe 2 is adjusted so that the liquid level in the tank body 1 is maintained in a constant range, so that the oil layer on the upper layer of the water body is higher than the upper end of the oil discharge pipe 4, so that the separated oil layer can flow into the oil discharge pipe 4 from the upper side of the oil discharge pipe 4 and be discharged from the oil discharge pipe 4. Among them, by arranging the distribution plate 8 and the floating ring 13, the distribution plate 8 can separate the oil body and the water body after the oil-water separation, and the floating ring 13 makes the distribution plate 8 float under the buoyancy of the water body, so that an effective separation interface is formed between the water body and the oil body, thereby ensuring the separation effect of the water layer and the oil layer.

[0040] The utility model provides a demulsifier separator for treating oily wastewater in water conservancy and hydropower projects, which has the following advantages:

[0041] The utility model provides a top feed pipe, a feed distribution pipe, a flow diversion ring, an oil-water separation membrane, a flow guide cone and a flow guide pipe, so that the oil-water mixture after adding a demulsifier enters the feed distribution pipe from the top feed pipe, flows into the flow diversion ring, and flows from the flow diversion ring into the surface of the oil-water separation membrane. The oil-water separation membrane separates the oil and water, and the water passes through the membrane and falls on the flow guide cone, and finally flows into the lower cavity of the tank body through the flow guide pipe. The separated oil drips from the center of the oil-water separation membrane into the oil discharge pipe, so that the separation rate of the oil and water is improved.

[0042] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A demulsifier separator for treating oily wastewater in water conservancy and hydropower projects, characterized in that: It comprises a tank body (1), a drainage pipe (3), an oil discharge pipe (4), a top feed pipe (7), a flow guide cone (9), an oil-water separation membrane (10), a flow distribution ring (11), a material distribution pipe (12) and a flow guide pipe (14); The top center of the tank body (1) is connected to the top feed pipe (7); the diverter ring (11) is arranged inside the tank body (1) and below the top feed pipe (7), and is in close contact with the annular inner wall of the tank body (1); a plurality of diverter pipes (12) are radially connected between the discharge end of the top feed pipe (7) and the diverter ring (11); the oil-water separation membrane (10) is arranged below the diverter ring (11); the guide cone (9) is arranged below the oil-water separation membrane (10), and the lower surface edge of the guide cone (9) is dispersedly connected to a plurality of vertically arranged guide pipes (14); The oil inlet of the oil drain pipe (4) is located directly below the center of the oil-water separation membrane (10) and is connected to the center of the oil-water separation membrane (10); the oil drain port of the oil drain pipe (4) extends from the bottom of the tank body (1); and the drain pipe (3) is provided on the lower side wall of the tank body (1).

2. A demulsifier separator for treating oily wastewater in water conservancy and hydropower projects according to claim 1, characterized in that: The material distribution pipe (12) is arranged at an inclination.

3. The demulsifier separator for treating oily wastewater in water conservancy and hydropower projects according to claim 1, characterized in that: The oil-water separation membrane (10) is in the shape of a conical funnel, the conical surface is the oil-water separation membrane portion, the conical bottom is the oil phase gathering position, and a conduit is arranged at the conical bottom.

4. A demulsifier separator for treating oily wastewater from water conservancy and hydropower projects according to claim 3, characterized in that: The guide cone (9) is a conical slope, the top of which is located directly below the bottom of the oil-water separation membrane (10), and a through hole for the oil phase to pass through is provided at the top of the guide cone (9).

5. The demulsifier separator for treating oily wastewater in water conservancy and hydropower projects according to claim 1, characterized in that: A distribution plate (8) can be slidably mounted up and down at a position close to the oil inlet of the oil discharge pipe (4), and the distribution plate (8) is located below the guide cone (9).

6. A demulsifier separator for treating oily wastewater in water conservancy and hydropower projects according to claim 5, characterized in that: The distribution plate (8) is provided with distribution holes.

7. The demulsifier separator for treating oily wastewater in water conservancy and hydropower projects according to claim 5, characterized in that: A floating ring (13) is slidably mounted outside the oil discharge pipe (4) and below the distribution plate (8).

8. The demulsifier separator for treating oily wastewater in water conservancy and hydropower projects according to claim 1, characterized in that: A side feed pipe (2) is provided on the side wall of the tank body (1); the side feed pipe (2) is located below the flow guide pipe (14).

9. The demulsifier separator for treating oily wastewater in water conservancy and hydropower projects according to claim 1, characterized in that: An observation window (5) is provided on the side wall of the tank body (1).

10. The demulsifier separator for treating oily wastewater in water conservancy and hydropower projects according to claim 1, characterized in that: Support legs (6) are installed at the bottom of the tank body (1).

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