Demulsifying filler and horizontal oil-water separation filter containing the demulsifying filler

Abstract

The present invention discloses a demulsifying filler and a horizontal oil-water separation filter containing the demulsifying filler, comprising a horizontal tank body and an oil drain bag, wherein the oil drain bag is provided with an oil drain port, the oil drain bag comprises an upper oil bag connected to the upper part of the horizontal tank body, the horizontal tank body comprises a first cabin body, a second cabin body and a third cabin body, the second cabin body is provided with a corrugated plate filler, the third cabin body is filled with an aggregation-induced demulsifying filler, the aggregation-induced demulsifying filler is a flexible compressible material, and the aggregation-induced demulsifying filler is provided with a plurality of drainage channels. The demulsifying filler and the horizontal oil-water separation filter containing the demulsifying filler perform separation processing within the entire horizontal tank body, reducing the equipment footprint, the flexible aggregation-induced demulsifying filler removes oil while preventing clogging, thereby improving the equipment's resistance to impurities, utilizing a spoiler to determine the stability of the separated oil in the oil bag, and blocking oil pollution through a filter element, and in addition, the separation filter simplifies the oil-water separation process, improving the oil-water separation efficiency while reducing the processing cost.

Description

Technical Field

[0001] The present invention relates to the technical field of oil-water separation, and in particular to a demulsifying filler and a horizontal oil-water separation filter comprising the demulsifying filler. Background Art

[0002] In the fields of petrochemicals, refining, and pharmaceuticals, oily wastewater often requires treatment because it often involves solvents and oils that are immiscible with water. Currently, chemical dosing and other methods are commonly used for treatment, but this will destroy the components that need to be reused, which does not meet the requirements. It will also generate a large amount of hazardous waste and require secondary treatment. Physical methods for oil-water separation meet the relevant requirements. Physical treatment is easier for free floating oil and partially dispersed oil, and there are many methods, including mechanical oil separators and cyclones. For the treatment of dispersed oil, some metal or plastic fillers, including corrugated plates, are often used. These fillers often have mediocre treatment effects and are unable to treat emulsified oil. Currently, there are some agglomerating materials for the treatment of emulsified oil, but they are generally applied in the form of filter elements. This requires pre-treatment of impurities and backwashing during use, which is a complicated process.

[0003] To this end, Chinese invention patent publication number CN101972559B discloses an oil-water separation device comprising a cyclone and a horizontal coalescing oil-water separator. The horizontal coalescing oil-water separator is sequentially equipped with an inlet liquid distributor, a rectifying sieve plate, stainless steel corrugated packing, polypropylene wire mesh corrugated packing, and an outlet liquid collector. The cyclone's U-shaped underflow pipe and its internal filter filter out small amounts of solid impurities in the liquid, preventing clogging of the coalescing packing. The inlet liquid distributor and outlet liquid collector ensure uniform liquid distribution. The rectifying sieve plate reduces the liquid flow rate, resulting in laminar flow. The stainless steel corrugated packing provides a place for oil droplets to coalesce and separate. The polypropylene wire mesh corrugated packing with a flotation device further coalesces and separates any remaining fine oil droplets. Through the sequential processes of cyclone, coalescing, and flotation, deep oil-water separation is achieved.

[0004] However, the above-mentioned oil-water separation device has many defects: First, the entire device consists of a cyclone and a horizontal coalescing oil-water separator, which occupies a large area and affects other operations. Second, the oil and water undergo cyclone, coalescing, and flotation treatment in sequence, which is a complex process, resulting in reduced oil-water treatment efficiency and increased treatment costs. Third, although the U-shaped underflow tube of the cyclone and the filter screen inside it can filter impurities and prevent impurities from clogging the coalescing filler, impurities will also be deposited in the U-shaped underflow tube and on the surface of the filter screen. As the equipment operates, the U-shaped underflow tube and the filter screen will also become clogged, resulting in poor overall impurity resistance of the equipment. Fourth, the composition of industrial oil and water is complex, and the oil and water also contain a large amount of heavy oil components. The above-mentioned equipment is unable to separate the heavy oil.

[0005] In addition, during the oil-water separation process, oleophilic and hydrophobic aggregation-induced demulsification fillers are usually used to adsorb oil droplets in the oil and water and filter out the wastewater components in the oil and water. However, due to the complex composition of oil and water, which contains a large amount of solid waste residue, when the oil-water mixture passes through the demulsification filler, the solid impurities in the waste liquid are easily blocked on the surface of the demulsification filler, resulting in the wastewater being unable to pass through the demulsification filler normally, affecting the oil-water separation process.

[0006] Therefore, it is necessary to improve the existing demulsification fillers and oil-water separation devices. Summary of the Invention

[0007] In view of the above-mentioned prior art, the technical problem to be solved by the present invention is: in order to overcome the shortcomings of the prior art, a demulsifying filler with high impurity resistance and a horizontal oil-water separation filter containing a demulsifying filler with high impurity resistance, small footprint, high separation efficiency and low cost are provided.

[0008] In order to solve the above technical problems, the present invention provides a demulsifying filler, which is an aggregation-induced demulsifying filler. The aggregation-induced demulsifying filler is a flexible compressible material and is provided with a plurality of drainage channels.

[0009] When the demulsifier filler of the above technical solution is used to separate the oil-water mixture, the fluid passes through the aggregation-induced demulsifier filler, which has lipophilic and hydrophobic properties, and can therefore adsorb oil droplets in the fluid, while wastewater and other impurities are discharged through the drainage pores; the oil droplets adsorbed on the surface of the aggregation-induced demulsifier filler gradually gather together to form large oil droplets, and then detach from the surface of the aggregation-induced demulsifier filler, so that the aggregation-induced demulsifier filler remains an unsaturated adsorption whole and can continuously adsorb oil droplets in the oil-water mixture; and when the wastewater and impurities pass through the drainage pores, the impurities will accumulate in the drainage pores, but since the aggregation-induced demulsifier filler is made of flexible and compressible material, the drainage pores are stretchable and deformable, and the impurities accumulated in the drainage pores will be pushed by the flowing wastewater, thereby discharging the impurities from the drainage pores. In this way, impurities are prevented from accumulating near the drainage pores and causing blockage, thereby greatly improving the impurity resistance of the demulsifier filler and ensuring smooth oil-water separation.

[0010] Preferably, the drainage channel includes a first channel and a second channel, and the aperture of the first channel is larger than the aperture of the second channel.

[0011] By adopting the above technical solution, the drainage channel is divided into a second channel with a larger pore size and a first channel with a smaller pore size. When the fluid passes through the aggregation-induced demulsification filler, it drives the impurities in the water to flow. The second channel with a smaller pore size will first accumulate a certain amount of impurities. However, since each channel is very short and the aggregation-induced demulsification filler is made of a flexible compressible material, the impurities in the second channel are easily discharged into the first channel connected to it. With the movement of the fluid, it will enter the second channel and the first channel behind it. Finally, the impurities pass through the aggregation-induced demulsification filler along with the wastewater. In this way, the impurity resistance of the demulsification filler is improved and the possibility of blockage is reduced.

[0012] Preferably, the pore size of the first channel is 1 mm to 5 mm, and the pore size of the second channel is not less than 5 μm.

[0013] By adopting the above technical solution, it was found in actual use that as long as the impurity content of the incoming water does not exceed 1000 mg / L, there will be no blockage, thus greatly improving the impurity resistance of the equipment.

[0014] Preferably, the aggregation-induced demulsification filler comprises a plurality of flexible balls, and the drainage pores are formed by extrusion-fitting the flexible balls.

[0015] By adopting the above technical solution, a plurality of mutually squeezed flexible balls are used to form a first channel and a second channel with pore sizes in different ranges. When the demulsifying filler is used, impurities move with the fluid, pass through the first channel and the second channel, and finally aggregate to induce the demulsifying filler, thereby improving the impurity resistance of the equipment.

[0016] Preferably, the diameter of the flexible ball is 5 mm-100 mm.

[0017] By adopting the above technical solution, it is helpful to ensure the aperture size of the first channel and the second channel formed between the flexible balls, thereby ensuring the resistance of the equipment to impurities.

[0018] In order to solve the above technical problems, the present invention also provides a horizontal oil-water separation filter, including a horizontal tank body and an oil drain bag, wherein the two ends of the horizontal tank body are respectively provided with an oil inlet and a drain port, and the oil drain bag is provided with an oil drain port. The horizontal tank body includes a first cabin body, a second cabin body and a third cabin body connected in sequence, the second cabin body is provided with a corrugated plate filler, and the third cabin body is filled with the demulsifying filler described in any of the above technical solutions.

[0019] During operation, the horizontal oil-water separator filter of the above technical solution discharges the oil-water mixture through the oil inlet into the horizontal tank. The oil-water mixture then passes through the first, second, and third compartments in sequence. As the fluid passes through the first compartment, free floating oil enters the oil drain bag. The oil-water then enters the second compartment, where it comes into contact with the corrugated plate packing. The corrugated plate packing absorbs dispersed oil droplets in the oil-water mixture, causing the dispersed oil droplets to aggregate, grow in size, break away from the surface of the corrugated plate packing, and enter the oil drain bag connected to the second compartment. The remaining oil-water passes through the second compartment and enters the third compartment. The aggregation-induced demulsification packing has lipophilic and hydrophobic properties, so the remaining emulsified oil droplets in the oil-water are absorbed by the aggregation-induced demulsification packing, while the wastewater in the oil-water passes through the drainage channel and is then discharged through the drain port of the horizontal tank. As separation progresses, the number of emulsified oil droplets adsorbed on the surface of the aggregation-induced demulsification packing increases. As the small oil droplets aggregate, they gradually grow in size, break away from the surface of the aggregation-induced demulsification packing, and enter the oil drain bag. The oil collected in the oil bag can be discharged by opening the oil drain port on the oil drain bag. The difference from the existing technology is that: first, the aggregation-induced demulsification filler is a flexible compressible material. Therefore, the aperture of the drainage channel on the aggregation-induced demulsification filler is retractable and deformable. In this way, during the oil-water treatment process, if solid particle impurities clog the drainage channel on the aggregation-induced demulsification filler, since the oil and water flow from the oil inlet to the drain port, these impurities clogged in the drainage channel are affected by the thrust of the oil and water, so that the impurities can pass through the deformable drainage channel and then through the aggregation-induced demulsification filler, which greatly reduces the possibility of clogging of the aggregation-induced demulsification filler and improves the equipment's resistance to impurities. Second, the oil-water separation process is carried out in the entire horizontal tank body, without the need for additional impurity removal equipment such as a cyclone, reducing the equipment's footprint. Third, the treatment process is simplified, and solid impurities can be separated while draining water, thereby improving the oil-water separation efficiency and reducing the oil-water treatment cost.

[0020] Preferably, the oil drainage bag includes an upper oil bag and a lower oil bag, and the upper oil bag and the lower oil bag are respectively connected to the upper side and the lower side of the horizontal tank body.

[0021] By adopting this technical solution, light and heavy oils can be further separated from oil pollution. As oil droplets adsorbed on the surfaces of the aggregation-induced demulsification packing and corrugated plate packing accumulate, they gradually grow larger and then detach from the adsorption surface. Among the detached oil droplets, the lighter oil with lower density floats to the upper oil pocket, while the heavier oil with higher density sinks to the lower oil pocket.

[0022] Preferably, a spoiler is fixedly provided at the connection point between the oil drain bag and the horizontal tank body, and the spoiler is provided with gradually transitioned spoiler flow holes, and the aperture of the spoiler flow hole at one end toward the inner cavity of the horizontal tank body is larger than the aperture at the other end.

[0023] The above technical solution facilitates the smooth collection of light and heavy oil by the upper and lower oil bags. As the fluid flows within the horizontal tank, turbulence forms, particularly near the oil bag and the progressive outlets of the first, second, and third compartments. This can prevent the oil bag from collecting oil droplets. The addition of spoilers reduces the impact of turbulence on the oil droplets, facilitating smooth collection of oil droplets by the upper and lower oil bags, achieving oil-water separation.

[0024] Preferably, the apertures at both ends of the spoiler flow hole are 3 mm and 0.2 mm respectively, and the thickness of the spoiler is 3 cm-10 cm.

[0025] By adopting the above technical solution, the spoiler becomes a gradient-set porous material. When the upper oil bag and the lower oil bag collect oil droplets, the oil droplets pass through the gradient-set spoiler flow holes and enter the upper oil bag and the lower oil bag.

[0026] Preferably, the first cabin, the second cabin and the third cabin are each provided with a filter element made of aggregation-induced hydrophilic oil-resistant material, and the filter element cavities arranged in sequence along the oil-water flow direction are respectively connected to the second cabin, the third cabin and the drain port.

[0027] By adopting the above technical solution, a hydrophilic and oleophobic filter element is sequentially arranged in the first cabin, the second cabin and the third cabin, and each cabin is kept connected with the second cabin, the third cabin and the drain port in sequence. When the fluid enters the second cabin from the first cabin, enters the third cabin from the second cabin and is discharged from the drain port, the filter element can isolate the oil droplets that have not entered the upper oil bag or the lower oil bag due to turbulence in the corresponding cabin, prevent the oil droplets from passing through, improve the oil collection efficiency of the upper oil bag and the lower oil bag, and ensure a high-precision oil-water separation effect.

[0028] Preferably, the filter element is in the shape of a horizontally arranged long strip; and a plurality of the filter elements are provided.

[0029] By adopting the above technical solution, the contact area between the fluid and the filter element is expanded, and the oil droplets processed at this stage are further isolated, so that the oil droplets collected by each oil bag are increased. At the same time, since the filter element is insensitive to impurities, the technical problem of prioritizing oil treatment when high oil content and high impurities coexist is solved, and the oil content is reduced to less than 100 mg / L at one time, and can reach less than 5 mg / L at best, shortening the entire treatment process, improving separation efficiency and reducing costs.

[0030] In summary, compared with the demulsification fillers in the prior art, the demulsification filler of the present invention uses flexible and compressible materials to prevent clogging by impurities, ensures smooth oil-water separation, and improves the resistance to impurities; compared with the prior art, the horizontal oil-water separation filter of the present invention separates floating oil, dispersed oil, emulsified oil and impurities in the entire horizontal tank body, reduces the equipment footprint, and uses flexible materials for the aggregation-induced demulsification filler to prevent clogging, thereby improving the resistance to impurities of the equipment. In addition, the separation filter simplifies the oil-water separation process, improves the oil-water separation efficiency, and reduces the processing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 Schematic diagram of the structure of the demulsifying filler of the present invention;

[0032] Figure 2 yes Figure 1 A magnified view of part A;

[0033] Figure 3 This is a schematic structural diagram of Example 1 of the horizontal oil-water separation filter of the present invention;

[0034] Figure 4 2 is a cross-sectional view of a horizontal oil-water separation filter according to embodiment 1 of the present invention;

[0035] Figure 5 2. It is a structural schematic diagram of the spoiler of Example 1 of the horizontal oil-water separation filter of the present invention;

[0036] Figure 6 2 is a schematic structural diagram of a filter element of a horizontal oil-water separation filter according to embodiment 2 of the present invention;

[0037] Figure 7 2. It is a schematic structural diagram of a filter element of a horizontal oil-water separation filter according to embodiment 3 of the present invention;

[0038] In the figure: 1. Horizontal tank body, 1-1. Oil inlet, 1-2. Drain outlet, 1a. First cabin, 1b. Second cabin, 1c. Third cabin, 2. Oil drain bag, 2-1. Oil drain outlet, 2a. Upper oil bag, 2b. Lower oil bag, 3. Aggregation-induced demulsification filler, 3-1. Drain channel, 3-1a. First channel, 3-2. Second channel, 3a. Flexible ball, 4. Spoiler, 4-1. Disturbing flow hole, 5. Filter element, 6. Partition, 6-1. Connecting hole, 7. Corrugated plate filler, 8. Oil-water interface meter, 9. Support frame, 10. Electronic control system, 11. Pressure gauge, 12. Water cap. DETAILED DESCRIPTION

[0039] The following embodiments are further described in conjunction with the accompanying drawings and examples. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention and are not intended to limit the scope of protection of the present invention.

[0040] like Figure 1 and Figure 2 As shown, the demulsification filler of the present invention is an aggregation-induced demulsification filler 3, which is a flexible compressible material and is composed of a plurality of flexible balls 3a with a diameter of 5mm-10mm (as shown in FIG. Figure 1 As shown in FIG1 ), each flexible ball 3a is squeezed and matched to form a plurality of drainage channels 3-1. The drainage channels 3-1 are divided into two types: a first channel 3-1a with a pore size between 1mm and 5mm, and a second channel 3-1b with a pore size not less than 5um (as shown in FIG1 ). Figure 2 shown).

[0041] When the demulsifier filler of this embodiment is used to separate oil and water, since the demulsifier filler is an oleophilic and hydrophobic aggregation-induced demulsifier filler, the oil droplets in the fluid are adsorbed on the surface of the flexible balls 3a, while the wastewater and impurities pass through the drainage channels 3-1 between each flexible ball 3a; as the adsorbed oil droplets increase, the oil droplets gather together and grow in size, and eventually break away from the surface of the aggregation-induced demulsifier filler, thereby achieving oil-water separation; and the drainage channel 3-1 is divided into a first channel 3-1a with a larger pore size and a second channel 3-1b with a smaller pore size, so when the fluid passes through the aggregation-induced demulsifier filler 3, the second channel 3-1b with a smaller pore size will be First, a certain amount of impurities accumulate. However, since the first channel 3-1a and the second channel 3-1b are very short, the impurities are easily discharged into the first channel 3-1a with a larger aperture due to the thrust of the fluid. As the fluid moves, the impurities enter the first channel 3-1a and the second channel 3-2a behind. Finally, the wastewater and impurities pass through the aggregation-induced demulsification filler 3 and are discharged from the drain port 1-2. As long as the impurity content of the influent does not exceed 1000 mg / L, the aggregation-induced demulsification filler 3 will not be blocked. Therefore, the demulsification filler of this embodiment has strong impurity resistance while achieving oil-water separation.

[0042] The horizontal oil-water separator filter of the present invention has three embodiments, as described below:

[0043] Example 1

[0044] like Figure 3-Figure 5 As shown, the horizontal oil-water separator filter of Example 1 includes an electronic control system 10 and a horizontal tank body 1 fixedly supported by two support frames 9. An oil inlet 1-1 and a drain outlet 1-2 are respectively provided at both ends of the horizontal tank body 1. Two vertical partitions 6 are provided in the horizontal tank body 1 along the oil-water flow direction. The outer edges of the partitions 6 are fixedly connected to the inner wall of the horizontal tank body 1. A connecting hole 6-1 is provided on the partitions 6, thereby dividing the inner cavity of the horizontal tank body 1 into a first cabin body 1a, a second cabin body 1b and a third cabin body 1c which are connected in sequence (as shown in FIG. Figure 4As shown); the upper and lower sides of the first cabin 1a, the second cabin 1b and the third cabin 1c are respectively connected to the oil drainage bag 2, and the oil drainage bag 2 is provided with an oil drainage port. The oil drainage bag 2 located at the top is the upper oil bag 2a, and the oil drainage bag 2 located at the bottom is the lower oil bag 2b. The upper oil bag 2a is provided with a pressure gauge 11 and an oil-water interface meter 8. The data detected by the pressure gauge 11 and the oil-water interface meter 8 are transmitted to the electronic control system 10, which is convenient for workers to understand the oil and water treatment status (such as Figure 3 and Figure 4 The second compartment 1b is provided with a corrugated plate filler 7, and the third compartment 1c is filled with an aggregation-induced demulsification filler 3 (as shown); Figure 4 As shown); wherein the aggregation-induced demulsification filler 3 is a flexible compressible material, composed of a plurality of flexible balls 3a with a diameter of 5mm-10mm, each flexible ball 3a is squeezed and matched to form a plurality of drainage channels 3-1, and the drainage channels 3-1 are divided into two types, one is a first channel 3-1a with a pore size between 1mm-5mm, and the other is a second channel 3-1b with a pore size of not less than 5um (as shown Figure 1 and Figure 2 As shown); A water cap 12 is fixedly installed on the inner side of the communicating hole 6-1 and the drain port 1-2 of the partition 6, and a closed-loop filter element 5 is installed on the water cap 12. The filter element 5 is made of an aggregation-induced hydrophilic oil-blocking material, so that the first cabin 1a, the second cabin 1b and the third cabin 1c are all provided with a filter element 5, and the filter element 5 is located on the oil inlet side of the partition 6; In addition, a spoiler 4 is provided at the connection between each upper oil bag 2a and the lower oil bag 2b and the first cabin 1a, the second cabin 2b and the third cabin 2c respectively (as shown); Figure 4 As shown), the spoiler 4 is fixed by a mechanical buckle, and a gradually transitioned spoiler flow hole 4-1 is opened on the spoiler 4. The aperture of the spoiler flow hole 4-1 facing the inner cavity of the horizontal tank body 1 is 3 mm, and the aperture of the other end is 0.2 mm. The thickness of the spoiler 4 is 5 cm (as shown). Figure 5 shown).

[0045] When using the demulsifying filler and the horizontal oil-water separator filter containing the demulsifying filler of this embodiment, the oil-water mixture is introduced into the inner cavity of the horizontal tank body 1 through the oil inlet 1-1. The oil-water mixture first enters the first cabin body 1a, and then the light oil with lower density in the free oil droplets floats to the upper oil bag 2a connected to the upper part of the first cabin body 1a, and the heavy oil with higher density sinks to the lower oil bag 2b connected to the lower part of the first cabin body 1a; then, after passing through the filter element 5 in the first cabin body 1a in sequence, it enters the inner cavity of the filter element 5, and then enters the second cabin body 1b from the connecting hole 6-1 on the partition 6. The corrugated plate filler 7 in the second cabin 1b absorbs the dispersed oil droplets in the oil-water mixture. As the separation proceeds, the absorbed dispersed oil droplets gradually increase. These small oil droplets accumulate together and gradually increase in size, and then break away from the surface of the corrugated plate filler 7. According to the density of the oil droplets, the light oil floats to the upper oil bag 2a connected to the second cabin 1b, and the heavy oil sinks to the lower oil bag 2b connected to the second cabin 1b; and the fluid passing through the corrugated plate filler 7 passes through the filter element 5 of the second cabin 1b, enters the inner side of the filter element 5, and then enters the third cabin 1c from the connecting hole 6-1 of the partition 6.

[0046] When the fluid enters the third cabin 1c, it comes into contact with the aggregation-induced demulsification filler 3, which absorbs the emulsified oil droplets in the fluid. As the number of absorbed emulsified oil droplets increases, the size of the oil droplets increases, and they detach from the surface of the aggregation-induced demulsification filler 3. The oil droplets with smaller density float to the upper oil bag 2a connected to the third cabin 1c, and the oil droplets with larger density sink to the lower oil bag 2b connected to the third cabin 1c. After the emulsified oil is separated from the fluid, the remaining mixed liquid is mainly composed of clean water and impurity particles. Finally, these mixed liquids are discharged from the horizontal tank 1 through the aggregation-induced demulsification filler 3 and the drain port 1-2 in turn.

[0047] Since the aggregation-induced demulsification filler 3 is made of a flexible compressible material, a first channel 3-1a with a pore size between 1mm and 5mm and a second channel 3-1b with a pore size of not less than 5um are formed by squeezing and fitting a plurality of flexible balls 3a. Therefore, when the fluid passes through the aggregation-induced demulsification filler 3, a certain amount of impurities will first accumulate in the second channel 3-1b with a smaller pore size. However, since the first channel 3-1a and the second channel 3-1b are very short, the impurities are easily discharged into the first channel 3-1a with a larger pore size under the thrust of the fluid. With the movement of the fluid, they will enter the first channel 3-1a and the second channel 3-2a behind. Finally, the wastewater and impurities pass through the aggregation-induced demulsification filler 3 and are discharged from the drain port 1-2. As long as the impurity content of the influent does not exceed 1000mg / L, the aggregation-induced demulsification filler 3 will not be blocked. Therefore, the demulsification filler and the horizontal oil-water separation filter containing the demulsification filler have strong impurity resistance.

[0048] After the oil-water mixture passes through the first, second, and third compartments 1a, 1b, and 1c, it achieves a progressive treatment of floating oil, dispersed oil, and emulsified oil. In both the second and third compartments 1b, 1c, the small oil droplets gradually increase in size and then desorb. Therefore, neither the corrugated plate packing 7 nor the aggregation-induced demulsification packing 3 experiences saturation, thus ensuring the stability of the equipment's operation. In the upper oil bag 2a, the oil-water interface position is detected by an oil-water interface meter 8, and the fluid pressure is measured using a pressure gauge 11. This data is transmitted to the electronic control system 10, which displays it, allowing staff to observe the oil-water separation status and, when appropriate, open the oil drain ports 2-1 on the upper and lower oil bags 2a, 2b to drain the oil.

[0049] In particular, when the fluid flows within the horizontal tank 1, particularly at the outlets of the first and second compartments 1a, 1b, and at the upper and lower oil bags 2a, 2b, turbulence can form, interfering with the collection of oil droplets by the upper and lower oil bags 2a, 2b and affecting the oil collection efficiency of the oil drain bag 2. In this case, a spoiler 4 is mechanically secured at the connection between the oil drain bag 2 and the horizontal tank 1. The spoiler 4 has gradually transitioned turbulence holes 4-1, minimizing the impact of turbulence on the oil collection of the oil drain bag 2. In addition, a closed-loop filter element 5 is provided at the connection point between the first cabin 1a and the second cabin 1b, at the connection point between the second cabin 1b and the third cabin 1c, and at the drain port 1-2. The filter element 5 is made of aggregation-induced hydrophilic oil-resistant material. When the fluid enters the second cabin 1b from the first cabin 1a, enters the first cabin 1a from the second cabin 1b, and is discharged from the drain port 1-2, the oil droplets that do not enter the oil drainage bag 2 due to turbulence are isolated in the corresponding cabin, thereby improving the oil collection efficiency of each upper oil bag 2a and the lower oil bag 2b, thereby improving the oil removal efficiency of the equipment as a whole. In this way, by setting the spoiler 4 and the filter element 5 that cooperate with each other, the oil droplets processed at this level can be isolated to the greatest extent, the oil collection efficiency of the upper oil bag 2a and the lower oil bag 2b can be improved, and the processing process is insensitive to impurities, so that it is effective for oil-water mixtures with an oil content of up to 30% and an impurity content not exceeding 1000 mg / L. It also solves the technical problem of giving priority to separating oil when high oil content and high impurity content coexist, and reduces the oil content to 100 mg / L at one time, and preferably within 5 mg / L. At the same time, the entire processing flow is greatly shortened, reducing costs.

[0050] Therefore, compared with the prior art, the demulsifying filler and the horizontal oil-water separation filter containing the demulsifying filler of this embodiment perform oil-water separation operations in a single horizontal tank body, which not only occupies a small area but also has high impurity resistance. In addition, it simplifies the oil-water treatment process, improves the oil-water separation efficiency, and reduces the treatment cost.

[0051] It should be noted that the spoiler 4 can also be fixed at the connection point between the horizontal tank body 1 and the oil drainage bag 2 in other ways. In addition, the width of the spoiler 4 is limited to between 3cm and 10cm. The thickness of the spoiler 4 is determined within this range, which can achieve the same technical effect as the above embodiment.

[0052] Example 2

[0053] like Figure 6 As shown, the horizontal oil-water separation filter of Example 2 is based on Example 1, with the difference that a plurality of communicating holes 6 - 1 are provided on the partition plate 6 and the filter element 5 is in the shape of an elongated column.

[0054] By increasing the number of connecting holes 6-1 on the partition 6, the number of filter elements 5 is increased, and the contact area between the filter element 5 and the fluid is expanded. In addition, the filter element 5 is in the shape of an elongated column, which further increases the surface area of ​​the filter element 5 and strengthens the barrier effect on oil droplets, thereby improving the oil collection efficiency of the upper oil bag 2a and the lower oil bag 2b.

[0055] Example 3

[0056] like Figure 7 As shown, the horizontal oil-water separation filter of Example 3 is based on Example 2, with the difference that filter elements 5 are provided on both sides of the partition 6, the filter element 5 located on the oil inlet side of the partition 6 is cylindrical, and the filter element 5 located on the oil outlet side of the partition 6 is conical, and the central axes of the filter elements 5 on both sides of the partition 6 are horizontal.

[0057] With this design, the filter elements 5 are arranged on both sides of the partition 6, which is beneficial to increasing the number of filter elements 5, thereby expanding the contact area between the filter element 5 and the fluid, and improving the oil collection efficiency of the upper oil bag 2a and the lower oil bag 2b. In addition, after the filter element 5 located on the oil outlet side of the partition 6 adopts the above design, when the fluid enters the inner side of the filter element 5 from the connecting hole 6-1, oil droplets accumulate on the inner surface of the filter element 5. After the oil droplets increase in size, the light oil and heavy oil can float and sink along the inner surface of the filter element 5 respectively, and then enter the upper oil bag 2a and the lower oil bag 2b through the connecting hole 6-1, which is beneficial to the oil bag 2 for collecting oil.

[0058] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principles of the present invention. These improvements and modifications should also be regarded as within the scope of protection of the present invention.

Claims

1. A demulsifying filler, wherein the demulsifying filler is an aggregation-induced demulsifying filler (3), characterized in that: The aggregation-induced demulsification filler (3) is a flexible compressible material, and a plurality of drainage channels (3-1) are provided on the aggregation-induced demulsification filler (3); the drainage channel (3-1) includes a first channel (3-1a) and a second channel (3-1b), the aperture of the first channel (3-1a) is larger than the aperture of the second channel (3-1b); the aperture of the first channel (3-1a) is 1mm-5mm, and the aperture of the second channel (3-1b) is not less than 5um; the aggregation-induced demulsification filler (3) includes a plurality of flexible balls (3a), and the drainage channel (3-1) is formed by extrusion-fitting the flexible balls (3a); the flexible balls with different diameters are present in the same filler layer.

2. The demulsifying filler according to claim 1, characterized in that: The diameter of the flexible ball (3a) is 5mm-100mm.

3. A horizontal oil-water separation filter, comprising a horizontal tank body (1) and an oil drain bag (2), wherein the two ends of the horizontal tank body (1) are respectively provided with an oil inlet (1-1) and a drain port (1-2), and the oil drain bag (2) is provided with an oil drain port (2-1), the horizontal tank body (1) comprises a first cabin body (1a), a second cabin body (1b) and a third cabin body (1c) which are connected in sequence, and a corrugated plate filler (7) is provided in the second cabin body (1b), characterized in that: The third compartment (1c) is filled with the demulsifying filler according to any one of claims 1 to 2.

4. The horizontal oil-water separation filter according to claim 3, characterized in that: The oil drainage bag (2) comprises an upper oil bag (2a) and a lower oil bag (2b), and the upper oil bag (2a) and the lower oil bag (2b) are respectively connected to the upper side and the lower side of the horizontal tank body (1).

5. The horizontal oil-water separation filter according to claim 4, characterized in that: A spoiler (4) is fixedly provided at the connection point between the oil drain bag (2) and the horizontal tank body (1), and the spoiler (4) is provided with gradually transitioned spoiler flow holes (4-1), and the aperture of the spoiler flow hole (4-1) at one end facing the inner cavity of the horizontal tank body (1) is larger than the aperture at the other end.

6. The horizontal oil-water separation filter according to claim 5, characterized in that: The apertures at both ends of the spoiler hole (4-1) are 3 mm and 0.2 mm respectively, and the thickness of the spoiler plate (4) is 3 cm to 10 cm.

7. The horizontal oil-water separation filter according to claim 3, characterized in that: Filter elements (5) made of aggregation-induced hydrophilic oil-blocking material are provided in the first cabin (1a), the second cabin (1b) and the third cabin (1c). The inner cavities of the filter elements (5) arranged in sequence along the flow direction of oil and water are respectively connected to the second cabin (1b), the third cabin (1c) and the drain port (1-2).

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