Oil-water separation sphere grid layer, sphere grid type oil-water separation aggregate structure and oil-water separator

Abstract

The application provides an oil-water separation sphere grid layer, a sphere grid type oil-water separation aggregate structure and an oil-water separator, a plurality of connecting pipes are sequentially and parallelly arranged along a second direction, and a first anti-blocking gap is arranged between any two adjacent connecting pipes; a collision sphere is provided with a through hole for the connecting pipe to pass through along a radial direction of the collision sphere, an inner diameter of the through hole matches an outer diameter of the connecting pipe, the connecting pipe sequentially penetrates through a plurality of collision spheres and is connected with the collision spheres, a second anti-blocking gap is arranged between any two adjacent collision spheres, the first anti-blocking gap is larger than an outer diameter of the collision sphere, and any four adjacent collision spheres enclose a converging space. According to the application, a plurality of collision spheres are sequentially and orderly connected on each connecting pipe, and anti-blocking structures are arranged in the first direction and the second direction, so that the oil droplet converging effect and the anti-blocking performance of the oil-water separation sphere grid layer can be ensured simultaneously.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of oil-water separation, and particularly relates to a ball-grid layer for oil-water separation, a ball-grid type oil-water separation aggregation structure and an oil-water separator. BACKGROUND

[0002] Oily sewage widely exists in industrial fields such as petrochemical industry, mechanical manufacturing, food processing and ship transportation, and has complex components and high oil phase dispersity. If directly discharged without treatment, not only oil resources will be seriously wasted, but also environmental pollution will be caused. Therefore, efficient oil-water separation of oily sewage is an important process in water treatment application in industrial fields.

[0003] An oil-water separator is one of devices widely used in oily sewage treatment. A typical oil-water separator is composed of a tank body, liquid inlets and outlets, an inlet distributor, an aggregation structure and a baffle, wherein the aggregation structure is a core component for oil-water separation, and performance of the aggregation structure directly determines the oil-water separation effect. The working principle of the aggregation structure is to promote collision, coalescence of dispersed oil droplets and realize efficient separation of oil and water under the action of gravity.

[0004] Currently, three forms of the aggregation structure commonly used are wire mesh, corrugated plate and filler. Among them, the wire mesh aggregation structure makes dispersed oil droplets coalesce through multiple layers of metal wire mesh, the metal wire diameter is small, which is not conducive to the adhesion of small oil droplets, and the narrow flow channel is easy to be blocked by impurities such as suspended solids; the structure of the corrugated plate type aggregation structure can improve the degree of fluid baffle and the collision frequency of dispersed oil droplets to a certain extent, but oil droplets collide with the plate along a certain angle, which is easy to slip, and the oil droplet capture effect is poor; the filler type aggregation structure can realize efficient collision and capture effect of dispersed oil droplets by using the slit effect, and the oil-water separation effect is good, but since the gap between the fillers is small, oil droplets or small particles and other impurities in the sewage are easy to be blocked in the filler layer, frequent backwashing is required for regeneration, and the regeneration difficulty and use cost are high.

[0005] It can be seen that efficient coalescence of dispersed oil droplets and prevention of impurity blockage are two key problems that need to be solved for high-performance oil-water separation aggregation structures. SUMMARY

[0006] The main purpose of the application is to provide a ball-grid layer for oil-water separation, a ball-grid type oil-water separation aggregation structure and an oil-water separator, which aims to solve the technical problems of poor oil-water separation effect and easy blockage of the oil-water separation device in the prior art.

[0007] In order to achieve the above object, the present application provides an oil-water separation ball grid layer for oil-water separation, comprising: connecting pipes, pipe axes of the connecting pipes are in a first direction, the first direction is perpendicular to a water flow direction, a plurality of the connecting pipes are arranged in parallel along a second direction in sequence, the second direction is perpendicular to the water flow direction, and a first anti-blocking gap is arranged between any two adjacent connecting pipes; and collision balls, through holes for the connecting pipes to pass through are opened along ball radial directions of the collision balls, inner diameters of the through holes match outer diameters of the connecting pipes, the number of the collision balls is multiple, the connecting pipes pass through the multiple collision balls in sequence and are connected with the collision balls, a second anti-blocking gap is arranged between any two adjacent collision balls, the first anti-blocking gap is greater than the outer diameter of the collision ball, and any four adjacent collision balls enclose a converging space.

[0008] In the embodiment of the present application, the length of the second anti-blocking gap is L1, the outer diameter of the collision ball is d, L1=a*d, and a is 1.2-1.5.

[0009] In the embodiment of the present application, the collision ball is a hollow ball, and the outer diameter of the collision ball is 10-50 mm.

[0010] In the embodiment of the present application, any four adjacent collision balls are arranged in a rectangular or rhombic manner, and the collision balls are located at four vertices of the rectangle or rhombus respectively.

[0011] In the embodiment of the present application, the connecting pipe is a hollow pipe with a hollow cavity, and the hollow cavity is used for accommodating a heating element.

[0012] The present application further provides a ball grid type oil-water separation aggregate structure, comprising the oil-water separation ball grid layer as described above, and a plurality of the oil-water separation ball grid layers are arranged in parallel along the water flow direction in sequence.

[0013] In the embodiment of the present application, any two adjacent oil-water separation ball grid layers are distributed in a staggered manner, and the ball centers of the collision balls in the next layer of oil-water separation ball grid layer are opposite to the converging space centers of the previous layer of oil-water separation ball grid layer.

[0014] In the embodiment of the present application, an anti-blocking channel is arranged between any two adjacent oil-water separation ball grid layers.

[0015] In the embodiment of the present application, the length of the anti-blocking channel is L2, the outer diameter of the collision ball is d, L2=b*d, and b is 0.8-2.2.

[0016] The present application further provides an oil-water separator, comprising a fixed plate and the ball grid type oil-water separation aggregate structure as described above, and both ends of the connecting pipe along the pipe axis are connected with the fixed plate.

[0017] By the technical solution, the oil-water separation sphere grid layer has the following beneficial effects:

[0018] The oil-water separation sphere grid layer has the following beneficial effects:

[0019] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0020] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with the specific embodiments described below, but do not limit the present application. In the drawings:

[0021] Figure 1 is a structure schematic view of the oil-water separation sphere grid layer according to an embodiment of the present application;

[0022] Figure 2 is a structure schematic view of the oil-water separation sphere grid layer according to another embodiment of the present application;

[0023] Figure 3 is a structure schematic view of the oil-water separation sphere grid layer according to an embodiment of the present application;

[0024] Figure 4 is a structure schematic view of the oil-water separation sphere grid layer according to another embodiment of the present application;

[0025] Figure 5 is a structure schematic view of the oil-water separation sphere grid layer according to an embodiment of the present application;

[0026] Figure 6 is a structure schematic view of the oil-water separation sphere grid layer according to an embodiment of the present application;

[0027] BRIEF DESCRIPTION OF DRAWINGS

[0028] Detailed Implementation

[0029] The specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings. It should be understood that the specific embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0030] The oil-water separation spherical grid layer according to the present invention is described below with reference to the accompanying drawings.

[0031] like Figures 1 to 4 As shown, in an embodiment of the present invention, the oil-water separation grid layer 100 is used for oil-water separation. The oil-water separation grid layer 100 includes a connecting pipe 1 and collision balls 2. The connecting pipe 1 has its axial direction as a first direction, which is perpendicular to the water flow direction. Multiple connecting pipes 1 are arranged in parallel along a second direction, which is perpendicular to the water flow direction. A first anti-blocking gap 3 is provided between any two adjacent connecting pipes 1. The collision balls 2 have through holes along their radial direction for the connecting pipe 1 to pass through. The inner diameter of the through holes matches the outer diameter of the connecting pipe 1. There are multiple collision balls 2. The connecting pipe 1 passes through multiple collision balls 2 in sequence and connects to the collision balls 2. A second anti-blocking gap 4 is provided between any two adjacent collision balls 2. The first anti-blocking gap 3 is larger than the outer diameter of the collision balls 2, and any four adjacent collision balls 2 form a converging space 5.

[0032] Understandably, the first and second directions in this embodiment can be set according to actual usage requirements, such as... Figure 1 As shown, in one embodiment, the first direction is perpendicular to the second direction. The collision ball 2 can be made of stainless steel or an oleophilic material. The stainless steel collision ball 2 has good structural stability, while the oleophilic material collision ball 2 has better oil-water separation.

[0033] The oil-water separation ball grid layer 100 in the embodiment has multiple collision balls 2 arranged on each connecting pipe 1, orderly changes the deflection direction of the fluid, increases the collision probability of the oil droplets and the ball surface, uses the high specific surface area of the collision balls 2 to increase the coalescence residence time of the oil droplets, and the converging space 5 surrounded by any four adjacent collision balls 2 can effectively guide the oil droplets to converge. Meanwhile, the first anti-blocking gap 3 is arranged in the second direction, and the second anti-blocking gap 4 is arranged in the first direction, so that the impurities can be prevented from blocking the oil-water separation ball grid layer 100 in the first direction and the second direction. The series structure of the connecting pipe 1 and the collision ball 2 ensures the stability of the oil-water separation ball grid layer 100, and is easy to process and low in cost. In the embodiment, multiple collision balls 2 are arranged on each connecting pipe 1 in an orderly manner, the collision balls 2 arranged in an orderly manner are used to effectively converge the oil droplets, the anti-blocking structure is arranged in the first direction and the second direction, the situation that the impurities such as silt block the oil-water separation ball grid layer 100 can be effectively avoided, and the oil droplet convergence effect and the anti-blocking performance of the oil-water separation ball grid layer 100 can be ensured at the same time.

[0034] In an embodiment, the length of the second anti-blocking gap 4 is L1, the outer diameter of the collision ball 2 is d, L1=a*d, and a is 1.2-1.5. The length of the second anti-blocking gap 3 after the length of the collision ball 2 is subtracted is 0.2-1 times the outer diameter of the collision ball 2. Multiple collision balls 2 are arranged on each connecting pipe 1 in an evenly spaced manner, so that the length of the second anti-blocking gap 4 is 1.2-1.5 times the outer diameter of the collision ball 2, the situation that the second anti-blocking gap 4 is too large to cause poor oil droplet convergence effect can be avoided, the situation that the impurities such as silt are accumulated to block the oil-water separation ball grid layer 100 can be avoided, and the oil droplet convergence effect and the service life of the oil-water separation ball grid layer 100 can be ensured at the same time.

[0035] Specifically, the collision ball 2 is a hollow ball, and the outer diameter of the collision ball 2 is 10-50 mm. For the impurity particles such as silt in the water flow, the convergence effect is good when the ball diameter is 10-50 mm, the collision surface area is effectively provided, and the collision effect is good. In an embodiment, the connecting pipe 1 is a hollow pipe with a hollow cavity, and the hollow cavity is used to accommodate a heating element. In order to facilitate connection, the connecting pipe 1 in the embodiment can be a hollow circular pipe, and the heating element can be a heating wire. In the case of needing to heat the water flow, the connecting pipe 1 can be heated by supplying power to the heating element, the collision ball 2 can be heat-conducted through the connecting pipe 1, the adhesion of the oil droplets on the collision ball 2 in a low-temperature environment is ensured, and the convergence effect of the oil droplets is improved.

[0036] The application further provides a ball-grid oil-water separation aggregate structure 200, which comprises the oil-water separation ball-grid layer 100 as described above, and the plurality of oil-water separation ball-grid layers 100 are arranged in parallel along the water flow direction in sequence. The ball-grid oil-water separation aggregate structure 200 comprises the oil-water separation ball-grid layer 100, and the specific structure of the oil-water separation ball-grid layer 100 is referred to the above embodiments. Since the ball-grid oil-water separation aggregate structure 200 adopts all the technical solutions of the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0037] As shown in the drawings, Figure 6 In an embodiment, the ball-grid oil-water separation aggregate structure 200 comprises four oil-water separation ball-grid layers 100, two of which are first oil-water separation layers, and the other two are second oil-water separation layers. The two first oil-water separation layers and the two second oil-water separation layers are arranged alternately, the connecting pipes 1 at the outermost sides of the two first oil-water separation layers are relatively aligned, the connecting pipes 1 at the outermost sides of the two second oil-water separation layers are relatively aligned, and the connecting pipes 1 in the first oil-water separation layers and the second oil-water separation layers are arranged alternately. The plurality of oil-water separation ball-grid layers 100 are arranged in sequence along the water flow direction, and the plurality of oil-water separation ball-grid layers 100 can fold the oil droplets in the water flow in sequence, so that the oil droplets are gathered in the gathering space 5 of the plurality of oil-water separation ball-grid layers 100 in sequence. In other embodiments, the number of oil-water separation ball-grid layers 100 can be set according to actual use requirements.

[0038] As shown in the drawings, Figure 5 and Figure 6 As shown in the drawings, any two adjacent oil-water separation ball-grid layers 100 are distributed in a staggered manner, and the centers of the ball cores of the collision balls 2 in the next layer of oil-water separation ball-grid layers 100 are opposite the centers of the gathering spaces 5 of the previous layer of oil-water separation ball-grid layers 100. In this embodiment, any two adjacent oil-water separation ball-grid layers 100 are distributed in a staggered manner, the spatial staggered arrangement of the plurality of collision balls 2 orderly changes the folding direction of the fluid, increases the collision and coalescence probability of the oil droplets and the spherical surface of the collision ball 2, and increases the coalescence residence time of the oil droplets through the high specific surface area of the collision ball 2. The two effects significantly improve the coalescence effect of the dispersed oil droplets, and the first anti-blocking gap 3, the second anti-blocking gap 4 and the anti-blocking channel 210 between the collision balls 2 can avoid the blocking of impurities to the ball-grid oil-water separation aggregate structure 200. In the case that the water flow passes through the plurality of oil-water separation ball-grid layers 100, the water flow can be gathered through the center of the gathering space 5, and in the case that the flow direction is to the next layer, since the centers of the ball cores of the collision balls 2 in the next layer of oil-water separation ball-grid layers 100 are opposite the centers of the gathering spaces 5 of the previous layer of oil-water separation ball-grid layers 100, the oil droplets can be effectively collided by the collision balls 2, which greatly improves the gathering effect of the oil droplets.

[0039] It should be noted that any four adjacent collision balls 2 are arranged in a rectangular or diamond shape, and the collision balls 2 are located at the four vertices of the rectangle or diamond, respectively. As shown in Figure 3 any four adjacent collision balls 2 are arranged in a rectangular shape, and the center of the converging space 5 is located at the center of the rectangle, as shown in Figure 4 any four adjacent collision balls 2 are arranged in a diamond shape, and the center of the converging space 5 is located at the center of the diamond. In this embodiment, by arranging any four adjacent collision balls 2 in a rectangular or diamond shape, it can be ensured that the centers of the collision balls 2 in the next layer of oil-water separation ball grid layer 100 are opposite the center of the converging space 5 of the previous layer of oil-water separation ball grid layer 100, forming multiple layers of baffling and converging.

[0040] Specifically, an anti-blocking channel 210 is provided between any two adjacent oil-water separation ball grid layers 100. As shown in Figure 6 the multiple oil-water separation ball grid layers 100 are uniformly spaced, and any two adjacent oil-water separation ball grid layers 100 are not in contact with each other, which can avoid the blocking of impurities such as silt between the two adjacent oil-water separation ball grid layers 100. It should be noted that the length of the anti-blocking channel 210 is L2, the outer diameter of the collision ball 2 is d, L2 = b*d, and b is: 0.8-2.2. In the case where the outer diameter of the collision ball 2 is 10mm-50mm, the anti-blocking channel 210 of 0.8-2.2 times can prevent blocking of polydisperse particles with a particle size of 0.08mm-110mm.

[0041] In an embodiment, the ball-grid oil-water separation aggregation structure 200 is composed of a plurality of collision balls 2 and a plurality of connection pipes 1 in series. The collision ball 2 is a hollow spherical structure with an outer diameter of 20 mm. A through hole is formed in the middle of each collision ball 2, and the inner diameter of the through hole is matched with the outer diameter of the connection pipe 1 for connection. The collision ball 2 is made of stainless steel. In the single-layer oil-water separation ball-grid layer 100, the four adjacent collision balls 2 are arranged in a rectangular manner, and the collision balls 2 are located at the four vertices of the rectangle. The distance between the collision balls 2 is 25 mm. The plurality of oil-water separation ball-grid layers 100 are parallel to each other, and the collision balls 2 of the adjacent two layers of oil-water separation ball-grid layers 100 are distributed in a staggered manner. The center of the collision ball 2 of the next layer of ball-grid layer is opposite to the center of the rectangular arrangement of the previous layer of ball-grid layer. The distance between the adjacent two layers of oil-water separation ball-grid layers 100 is 30 mm. The plurality of connection pipes 1 are made of stainless steel, and the outer diameter of the connection pipe 1 is 8 mm. The plurality of connection pipes 1 installed on the fixed plate 300 can form a regular three-dimensional support frame for the collision balls 2. The connection pipe 1 and the fixed plate 300 can be connected by bolts or other connecting members. The connection mode of the connection pipe 1 and the collision ball 2 is that a plurality of collision balls 2 are connected in series on the connection pipe 1. The connection pipe 1 passes through the through hole of the collision ball 2, and the collision ball 2 and the connection pipe 1 are fixedly connected by welding. During the oil-containing sewage separation process, the mixed fluid containing oil, mud and water passes through the ball-grid oil-water separation aggregation structure 200. The pressure difference drives the discrete small oil droplets to migrate to the surface of the collision ball 2. By changing the flow direction of the fluid in an orderly manner, the collision probability of the oil droplets and the ball surface is increased. The high specific surface area of the collision ball 2 increases the coalescence residence time of the oil droplets, so that the oil droplets realize efficient coalescence. With the continuous coalescence process, the oil droplet particles gradually increase in size. When they reach a certain size, they float to the surface of the water body under the action of buoyancy, realizing oil-water separation. The solid impurities such as sand particles flowing through the ball-grid oil-water separation aggregation structure 200 sink under the action of gravity through the first anti-blocking gap 3 in the second direction between the plurality of collision balls 2, the second anti-blocking gap 4 in the first direction and the anti-blocking channel 210 in the direction of the water flow, forming a three-dimensional anti-blocking to avoid blocking the ball-grid oil-water separation aggregation structure 200 by impurities.

[0042] In another embodiment, the four adjacent collision balls 2 in the single-layer oil-water separation ball-grid layer 100 are arranged in a diamond shape. The length of the second anti-blocking gap 4 is 36 mm. The outer diameter of the collision ball 2 is 30 mm. The collision ball 2 is made of oleophilic material. The length of the anti-blocking channel 210 between the adjacent two layers of oil-water separation ball-grid layers 100 is 54 mm. The material of the connection pipe 1 is high-strength engineering plastic, and the outer diameter of the connection pipe 1 is 12 mm. The collision ball 2 and the connection pipe 1 are fixedly connected by adhesion.

[0043] The application further provides an oil-water separator, which comprises a fixed plate 300 and the ball-grid oil-water separation structure 200 as described above, and the connecting pipe 1 is connected with the fixed plate 300 at both ends along the pipe axis. Figure 2 As shown in the figure, the fixed plate 300 in the embodiment is a ring plate with a mounting cavity, and the multiple oil-water separation ball-grid layers 100 of the ball-grid oil-water separation structure 200 can be mounted in sequence along the axis of the fixed plate 300.

[0044] In the description of the application, it should be understood that the terms "first", "second" are used only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined as "first", "second" can be explicitly or implicitly included at least one of the features. In the description of the application, the meaning of "multiple" is at least two, such as two, three, etc., unless otherwise specifically limited.

[0045] In the application, unless otherwise specifically defined and limited, the terms "mounting", "connection", "connection", "fixing" and other terms should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected or communicate with each other; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements, unless otherwise specifically limited. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0046] In the description of the specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the application. In the specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine the different embodiments or examples described in the specification and the features of the different embodiments or examples without contradiction.

[0047] Although the embodiments of the application have been shown and described above, it should be understood that the above embodiments are exemplary and cannot be understood as limiting the application, and those skilled in the art can make changes, modifications, replacements and variations to the above embodiments within the scope of the application.

Claims

1. An oil-water separation spherical grid layer for oil-water separation, characterized in that, The oil-water separation spherical grid layer (100) includes: Connecting pipe (1), the pipe axis of the connecting pipe (1) is the first direction, and the first direction is perpendicular to the water flow direction. Multiple connecting pipes (1) are arranged in parallel along the second direction, the second direction is perpendicular to the water flow direction, and a first anti-blocking gap (3) is provided between any two adjacent connecting pipes (1). The collision ball (2) has a through hole along its radial direction for the connecting tube (1) to pass through. The inner diameter of the through hole matches the outer diameter of the connecting tube (1). There are multiple collision balls (2). The connecting tube (1) passes through multiple collision balls (2) in sequence and connects to the collision balls (2). A second anti-blocking gap (4) is provided between any two adjacent collision balls (2). The first anti-blocking gap (3) is larger than the outer diameter of the collision ball (2) and makes any four adjacent collision balls (2) form a convergence space (5). The length of the second anti-blocking gap (4) is L1, and the outer diameter of the collision ball (2) is d, L1=a*d, where a is 1.2~1.5; The collision ball (2) is a hollow ball, and the outer diameter of the collision ball (2) is 10mm~50mm; Any four adjacent collision balls (2) are arranged in a rectangular or rhomboid shape, and the collision balls (2) are located at the four vertices of the rectangle or rhomboid respectively.

2. The oil-water separation spherical grid layer according to claim 1, characterized in that, The connecting pipe (1) is a hollow pipe with a hollow cavity, which is used to accommodate the heating element.

3. A ball-grid type oil-water separation polymer structure, characterized in that, The ball grid type oil-water separation polymer structure (200) includes the oil-water separation ball grid layer (100) as described in claim 1 or 2, and the multiple layers of the oil-water separation ball grid layer (100) are arranged in parallel along the water flow direction.

4. The ball-grid type oil-water separation polymer structure according to claim 3, characterized in that, Any two adjacent oil-water separation grid layers (100) are staggered, and the center of the collision ball (2) in the next layer of oil-water separation grid layer (100) is directly opposite to the center of the convergence space (5) of the previous layer of oil-water separation grid layer (100).

5. The ball-grid type oil-water separation polymer structure according to claim 3, characterized in that, An anti-clogging channel (210) is provided between any two adjacent oil-water separation grid layers (100).

6. The ball-grid type oil-water separation polymer structure according to claim 5, characterized in that, The length of the anti-blocking channel (210) is L2, and the outer diameter of the collision ball (2) is d, L2=b*d, where b is 0.8~2.

2.

7. An oil-water separator, characterized in that, The oil-water separator includes a fixed plate (300) and a ball grid type oil-water separator structural component (200) as described in claims 3 to 6. Both ends of the connecting pipe (1) along the pipe axis are connected to the fixed plate (300).

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