CN206521302U - Utilize the oily-water seperating equipment of micro-interface fiber - Google Patents

Abstract

The utility model is related to a kind of oily-water seperating equipment, more particularly, to a kind of oily-water seperating equipment of utilization micro-interface fiber.It is mainly solve prior art present in existing water-oil separating treatment effect it is poor, run compared with it is unstable, the technical problem that secondary pollution, equipment investment and maintenance cost are big compared with high, floor space, processing speed is slow, economic benefit is more low can be produced to environment.The utility model includes oil groove before oil removing（1）, oil groove before oil removing（1）By except oil pump（2）, pipeline be connected with accurate filter（3）, accurate filter is connected with micro-interface water-oil separating tower（4）, micro-interface water-oil separating tower includes tower body（5）, the interior porous plate for being provided with more than 2 layers of tower body（6）, porous plate is provided with micro-interface fibrous layer（7）, the outlet pipe of micro-interface water-oil separating tower is connected with swash plate defecator（8）, swash plate defecator is interior to be provided with swash plate layer（9）, the outlet pipe of swash plate defecator is connected with low level storage tank（10）, micro-interface water-oil separating tower, the top of swash plate defecator are also communicated with backwash liquor storage tank（11）.

Description

Oil-Water Separation Device Utilizing Microinterface Fibers

technical field

The utility model relates to an oil-water separation device, in particular to an oil-water separation device using micro-interface fibers.

Background technique

It is more and more common to use hydrometallurgy to extract non-ferrous metals, and the extraction process is an important link in the hydrometallurgy process. The so-called extraction is that after the solvent oil dilutes the extractant (commonly known as the organic phase) and the water phase of the metal salts are completely stirred and mixed, the substances to be separated in one phase enter the other phase to achieve the purpose of separation and purification. After the two phases are mixed and separated in this process, the organic phase will inevitably be entrained in the water phase. Without deep oil removal, it will have a great impact on the subsequent products or wastewater treatment. During solvent oil extraction, the oil in the water phase generally exists in four states: suspended oil, dispersed oil, emulsified oil, and dissolved oil. Among the oils in these four states, the suspended oil is easy to float in the liquid due to the large particle size of the oil droplets, and is very easy to recover; the dispersed oil is dispersed and suspended in the solution in the form of slight oil droplets, and it needs to stand for a period of time and gather to form a suspension. Oil; emulsified oil is produced after adding a surfactant to the solution. Its oil droplets are small, generally less than 10 μm, and it is difficult to separate; dissolved oil particles are smaller, and it takes a longer time to accumulate to make the oil bubbles bigger. This is more difficult to separate. There are many separation methods for oil in the water phase. How to evaluate the quality of oil-water separation is mostly related to the processing process and results, such as equipment investment costs, equipment footprint, impact on the environment during operation, and whether the oil phase can be reused. , stability and quality of operation to determine. Among the many methods of oil-water separation, chemical method, microbial method, chemical and microbial mixed method and physical method are compared. The physical method is more ideal, it does not produce secondary pollution, the organic phase can be reused, the processing speed is faster, and the economic benefit is higher. Large, especially the use of micro interface degreaser to remove oil is more economical than other physical method equipment, it is a revolutionary technology.

Utility model content

The utility model provides an oil-water separation device using micro-interface fibers, which mainly solves the problems in the prior art that the existing oil-water separation treatment effect is poor, the operation is relatively unstable, secondary pollution will be generated to the environment, and equipment investment And technical problems such as high maintenance costs, large floor area, slow processing speed, and low economic benefits.

The above-mentioned technical problems of the utility model are mainly solved by the following technical solutions:

The oil-water separation device using micro-interface fibers of the present utility model includes an oil tank before oil removal. The oil tank before oil removal is connected with a precision filter through an oil removal pump and a pipeline, and the precision filter is connected with a micro-interface oil-water separation tower. The interface oil-water separation tower includes a tower body with more than two layers of perforated plates. The porous plate is provided with a micro-interface fiber layer. The outlet pipe of the micro-interface oil-water separation tower is connected to a sloping plate clarification tank. A sloping plate layer is provided, and the outlet pipe of the sloping plate clarification tank is connected with a low-level storage tank, and the top of the micro-interface oil-water separation tower and the sloping plate clarification tank is also connected with a backwash liquid storage tank. Microinterface fibers are obtained by microcrystallization treatment of fiber materials. After microcrystallization, the surface lattice of the fiber has metastable high-energy active groups, so that it can achieve high surface energy and high adsorption capacity. It can realize 99% automatic separation of oil and water. It is based on the principle of coarse-grained wet-medium-wet condensation. When the oil-water mixture touches the fiber layer, it has different wettability to the mixed liquid. The oil drop and water drop show different wetting angles on the contact surface. When the two in the liquid When the difference between the wetting angles of the phases on the same surface is greater than 70 degrees, the two phases will naturally separate. It can also be considered that when the oily wastewater touches the fiber layer (oleophilic and hydrophobic), the rapidly wet oil droplets coalesce and grow up. According to Storrs' law: V _t = KD ² where: V _t - the rising speed of oil particles ; K—water temperature and oil viscosity can be regarded as a constant; D—the diameter of oil particles. That is, the rising speed of oil particles in the aqueous solution is proportional to the square of the particle diameter of the oil particles. The larger the diameter of the oil particles, the faster the rising and separating speed. This is the main way of the oil-water separation method. It can be seen from the formula that the rising speed of the oil particle is proportional to the square of the diameter of the oil droplet. The utility model can contact the mixed aqueous solution composed of suspended oil, dispersed oil, emulsified oil and dissolved oil in the oily wastewater to the surface of the fiber, and the oil droplets will gather and grow, and when the buoyancy is greater than the adsorption force and the resistance between the fibers, the oil will The beads are flushed out of the fiber layer and floated up. Valves can be provided at the inlet and outlet of each device, so that they can be opened and closed as required. .

Preferably, the tower body is connected with a liquid inlet pipe, and the liquid inlet pipe is connected inside the central pipe, and the central pipe passes through the perforated plate. The feed liquid first passes through the central tube and then enters the tower body, which can reduce the flow rate.

Preferably, the inclination of the sloping plates in the sloping plate layer increases sequentially from the middle to both sides. The inclined plate layer can reduce the clarification rate, and the inclined plate in the middle has a lower inclination, so that more oil-water mixture can pass through.

As a preference, the tower body is composed of five barrel sections with a height of 500-700mm, the thickness of the micro-interface fiber layer is 400-500mm, the lower end of the tower is an arc bottom, and the tower body is made of steel-lined rubber. The lower end of the tower is a circular arc bottom to facilitate the settlement and discharge of solid particles.

Preferably, the adjacent cylinder sections are fixed together by flanges, and gaskets are provided between the perforated plates and the flanges.

Preferably, the micro-interface fiber layer is fixed on the porous plate through polypropylene mesh and ropes.

As a preference, a direct pipeline is provided between the oil removal pump and the micro-interface oil-water separation tower, and a valve is provided on the direct pipeline. If the liquid after entering the oil removal pump does not need to be filtered, it can directly reach the micro-interface oil-water separation tower through the straight-through pipeline.

Therefore, the utility model has good treatment effect, stable operation, no secondary pollution to the environment, low equipment investment and maintenance costs, small footprint, fast treatment speed, high economic benefits, simple and reasonable structure.

Description of drawings

Accompanying drawing 1 is a kind of structural representation of the utility model;

Accompanying drawing 2 is a kind of structural representation of micro-interface oil-water separation tower of the present utility model;

Accompanying drawing 3 is a kind of structural representation of micro-interface fiber layer and polypropylene net of the present utility model;

Accompanying drawing 4 is the structural diagram of the A direction of Fig. 2 of the present utility model.

Parts, parts and numbers in the figure: oil tank before oil removal 1, oil removal pump 2, precision filter 3, micro-interface oil-water separation tower 4, tower body 5, porous plate 6, micro-interface fiber layer 7, inclined plate clarification tank 8 , inclined plate layer 9, low storage tank 10, backwash liquid storage tank 11, liquid inlet pipe 12, center pipe 13, flange 14, gasket 15, polypropylene mesh 16.

detailed description

The technical solutions of the present utility model will be further specifically described below through the embodiments and in conjunction with the accompanying drawings.

Embodiment: The oil-water separation device utilizing micro-interface fibers in this example, as shown in Figure 1, includes an oil tank 1 before oil removal. The interface oil-water separation tower 4, the micro-interface oil-water separation tower includes a tower body 5, the tower body is provided with more than 2 layers of porous plates 6, the porous plate is provided with a micro-interface fiber layer 7, and the outlet pipe of the micro-interface oil-water separation tower is connected with Inclined plate clarification tank 8, inclined plate clarifier is provided with inclined plate layer 9, the outlet pipe of inclined plate clarified tank is connected with low storage tank 10, and the top of micro-interface oil-water separation tower and inclined plate clarified tank is also connected with backwash liquid storage tank 11. As shown in Figure 2, the micro-interface oil-water separation tower includes a tower body 5, 4 layers of perforated plates 6 are arranged in the tower body, and a micro-interface fiber layer 7 is arranged on the perforated plate, as shown in Figure 3 and Figure 4, the micro-interface fiber layer 7 passes through the polymer Propylene net 16 is fixed on the perforated plate 6 with rope. The tower body is composed of 5 cylinder sections with a height of 600mm. Adjacent cylinder sections are fixed together by flanges 14, and gaskets 15 are provided between the perforated plate 6 and the flanges. The thickness of the micro-interface fiber layer is 450mm, the lower end of the tower is a circular arc bottom, and the tower body is made of steel-lined rubber material. The tower body is connected with a liquid inlet pipe 12 , and the liquid inlet pipe is connected inside the center pipe 13 , and the center pipe runs through the perforated plate 4 . The inclination of the inclined plate in the inclined plate layer increases sequentially from the middle to both sides.

Method of use: pass dilute sulfuric acid and P204 raffinate into oil tank 1 before degreasing to remove solid particles entrained in the feed liquid; feed liquid filtered by degreasing pump 2 and precision filter 3 is directly separated from micro-interface oil-water The top of the tower 4 is filled with the tower body, and when the feed liquid passes through the micro-interface fiber layer 7, the micro-interface fiber layer is wetted first. At this moment, the following state will appear instantly. The small oil droplets of the mixed liquid are adsorbed and gathered on the surface of the fiber. As time goes on, the oil particles in the water phase will be quickly absorbed when they come into contact with the microcrystalline fiber and will gather into large oil droplets. Float to the upper liquid surface; when the water-in-oil or oil-in-water emulsified phase in the water phase touches the fiber, the emulsified phase will be destroyed and dispersed into tiny oil particles, and will also gather into large oil droplets to float to the upper liquid surface and pass through the top The drain valve is discharged to realize oil-water separation; part of the oil is entrained by the water phase and enters the micro-interface oil-water separation tower 4, first passes through the central pipe 13 to reduce the flow rate, and then passes through the inclined plate layer 9 of the inclined plate clarifier 8 to reach the storage tank. The bottom of the tank is discharged, and when the oil accumulates to a certain extent at the top of the micro-interface oil-water separation tower 4, the outlet valve is closed, the liquid level rises naturally, and the oil is discharged through the drain valve at the top. The water after the oil-water separation is sent to the lower storage tank 10 for later use.

The utility model has carried out a ten-day continuous degreasing experiment to the clarification chamber solution of the nickel sulfate extraction box of a certain domestic enterprise, and the results are as follows:

The utility model treats another cobalt-nickel smelting enterprise in China to the nickel extraction solution with an oil content > 200ppm after being treated by the utility model degreasing equipment, and the result is as follows:

The above is only a specific embodiment of the utility model, but the structural features of the utility model are not limited thereto, and any changes or modifications made by those skilled in the art within the scope of the utility model are covered by the utility model. In the scope of the new patent.

Claims (7)

1. An oil-water separation device using micro-interface fibers, including an oil tank (1) before oil removal, characterized in that the oil tank before oil removal (1) is connected with a precision filter ( 3), the precision filter is connected with a micro-interface oil-water separation tower (4), the micro-interface oil-water separation tower includes a tower body (5), and there are more than 2 layers of porous plates (6) in the tower body, and micro-interface oil-water separation towers are arranged on the porous plate. The interface fiber layer (7), the outlet pipe of the micro-interface oil-water separation tower is connected to the inclined plate clarification tank (8), and the inclined plate clarification tank is equipped with an inclined plate layer (9), and the outlet pipe of the inclined plate clarification tank is connected to the low storage The top of the tank (10), the micro-interface oil-water separation tower and the inclined plate clarifier tank is also connected with a backwash liquid storage tank (11). 2. The oil-water separation device using micro-interface fibers according to claim 1, characterized in that the tower body (3) is connected with a liquid inlet pipe (12), and the liquid inlet pipe is connected inside the central pipe (13) , the central tube runs through the perforated plate (6). 3. The oil-water separation device using micro-interface fibers according to claim 2, characterized in that the inclination of the sloping plate in the sloping plate layer (9) increases sequentially from the middle to both sides. 4. The oil-water separation device using micro-interface fibers according to claim 1, 2 or 3, characterized in that the tower body (5) is composed of 5 cylindrical sections with a height of 500-700 mm, and the micro-interface fibers The thickness of the layer (7) is 400-500mm, the lower end of the tower is a circular arc bottom, and the tower body is made of steel-lined rubber material. 5. The oil-water separation device using micro-interface fibers according to claim 4, characterized in that the adjacent cylinder sections are fixed together by flanges (14), and there is a pad between the porous plate (6) and the flange slices (15). 6. The oil-water separation device using micro-interface fibers according to claim 4, characterized in that the micro-interface fiber layer (7) is fixed on the porous plate (6) through polypropylene mesh (16) and ropes. 7. The oil-water separation device using micro-interface fibers according to claim 4, characterized in that a straight-through pipeline (17) is provided between the degreasing pump (2) and the micro-interface oil-water separation tower (4). There is a valve on the pipeline.