Rare earth industry raffinate oil removal device

Abstract

The utility model relates to the technical field of chemical equipment, in particular to a raffinate deoiling device in the rare earth industry, which comprises an outer cylinder, an inner cylinder is arranged at the center inside the outer cylinder, the bottom of the inner cylinder is fixedly welded with the center of the bottom surface of the inner wall of the outer cylinder, and an oil separation diaphragm plate is arranged in the middle between the inner cylinder and the outer cylinder. An inner filter cylinder is arranged in the inner cylinder, an oil passing port a and an oil passing port b are formed in the middle-lower part of the inner cylinder, a filter membrane assembly is arranged in the inner cylinder, and a water phase communicating pipe and a liquid level adjusting pipe are arranged on the right side of the outer part of the outer cylinder in a communicating manner. According to the oil removal device for the raffinate in the rare earth industry, oil-water separation is carried out on the raffinate by adopting a physical means, compared with the prior art, secondary pollution is greatly reduced, the components and the use performance of oil and water are basically not influenced in the impurity removal treatment process, and the oil-water separation can be integrally, rapidly and efficiently carried out by the equipment; the operation is simple, the maintenance is simple and convenient, and the oil removal problem in the raffinate is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to chemical equipment technical field, concretely is a kind of raffinate oil removal device in rare earth industry. BACKGROUND

[0002] In rare earth extraction, the raffinate after extraction agent and rare earth feed liquid extraction contains a certain amount of oil, including suspended oil, dispersed oil, emulsified oil and dissolved oil; The current oil removal method for rare earth industry mainly includes static stratification and oil separation, air flotation, reagent coagulation, resin coalescence, coagulation demulsification, advanced oxidation, membrane filtration, carbon-based material adsorption and resin adsorption; Static stratification and oil separation is a technology that realizes oil-water separation by using the density difference between oil and water, and is mainly used for removing suspended oil in aqueous solution and dispersed oil with particle size greater than 50 μm, and is often used as a pretreatment process before deep oil removal of rare earth feed liquid.

[0003] Among them, for dispersed oil with particle size less than 50 μm, there are significant disadvantages such as long static time, low efficiency and large equipment area when using static stratification method, and generally reagent coagulation is needed to make small oil droplets in the feed liquid coagulate into large oil droplets, and then oil-water separation, which exists a large amount of secondary pollution and low oil removal efficiency.

[0004] In order to solve the above problems, we have made improvements, and provided a raffinate oil removal device in rare earth industry. CONTENT OF THE UTILITY MODEL

[0005] In order to solve the above technical problems, the utility model provides the following technical scheme:

[0006] The utility model provides a kind of raffinate oil removal device in rare earth industry, including outer cylinder, the outer cylinder is the cylindrical shell of device, the inside center of outer cylinder is provided with cylindrical inner cylinder, the bottom of inner cylinder and the bottom surface center of outer cylinder inner wall are fixedly welded, oil separation membrane plate is fixedly arranged at middle part between inner cylinder and outer cylinder at equal intervals, the inside of inner cylinder is provided with inner filter cylinder, and the right side and left side of inner cylinder middle lower part position are respectively provided with pass oil port a and pass oil port b, the inside of inner cylinder is provided with filter membrane subassembly, and water phase pipe and liquid level adjusting pipe are communicated and arranged on the outside right side of outer cylinder.

[0007] As a preferred technical scheme of the utility model, the top left side of the outer cylinder is fixedly communicated and arranged with oil phase outlet, the oil separation membrane plate is provided with three layers, the outer side edge of each layer of oil separation membrane plate is fixedly welded with the inner wall of outer cylinder, and the inner side is fixedly welded with support framework at equal intervals, the other end of support framework is fixedly welded with inner cylinder, and the surface of oil separation membrane plate is provided with oleophilic hydrophobic membrane.

[0008] As a preferred technical scheme of the utility model, the oil passing port a and the oil passing port b are communicated and surround the inner cylinder body for one circle, the inner cylinder body top is fixedly welded with the inner cylinder body sealing plate, the inner filter cylinder body is cylindrical and is sealed at the bottom, the inner filter cylinder body top is fixedly welded with the inner wall bottom surface of the inner cylinder body sealing plate, the center of the inner cylinder body sealing plate is provided with the liquid inlet, the filter membrane assembly top is fixedly connected with the inner wall bottom surface of the inner cylinder body sealing plate through the bolt, and the filter membrane assembly top is communicated with the liquid inlet.

[0009] As a preferred technical scheme of the utility model, the inner filter cylinder body top left and right sides are respectively provided with the liquid outlet b and the liquid outlet a at equal intervals.

[0010] As a preferred technical scheme of the utility model, the outer cylinder body right side bottom is fixedly and communicatively provided with the emptying port, the emptying port top is fixedly and communicatively connected with the water communication pipe bottom, the water communication pipe top is fixedly and communicatively connected with the liquid level adjusting pipe bottom, the liquid level adjusting pipe outside is fixedly sleeved with the liquid level adjusting outer pipe, and the connecting position of the water communication pipe and the liquid level adjusting pipe is located at the bottom end inside the liquid level adjusting outer pipe.

[0011] As a preferred technical scheme of the utility model, the liquid level adjusting outer pipe right side bottom is communicatively provided with the water outlet, the liquid level adjusting pipe top right side is fixedly and communicatively provided with the liquid level adjusting port, and the inner cylinder body bottom is provided with the triangular bottom liquid outlet at equal intervals.

[0012] The rare earth industry raffinate oil removal device has the advantages that physical means is used to separate oil and water for the raffinate, compared with the prior art, secondary pollution is greatly reduced, the impurity removal process basically does not affect the composition and use performance of oil and water, the equipment can integrally and rapidly and efficiently separate oil and water, the occupied area is greatly reduced compared with the traditional device, and the device is simple to operate and convenient to maintain, and the oil removal problem in the raffinate is solved. BRIEF DESCRIPTION OF DRAWINGS

[0013] The drawings are used to provide further understanding of the utility model, constitute a part of the specification, are used together with the embodiments of the utility model to explain the utility model, and do not constitute the limitation on the utility model.

[0014] Fig. 1 It is a structure schematic view of the rare earth industry raffinate oil removal device of the utility model,

[0015] Fig. 2 It is a structure schematic view of the rare earth industry raffinate oil removal device of the utility model,

[0016] In the diagram: 1. Outer cylinder; 2. Oil separator plate; 3. Oil phase outlet; 4. Inner cylinder; 5. Inner filter cylinder; 6. Oil outlet a; 7. Oil outlet b; 8. Filter membrane assembly; 9. Liquid outlet a; 10. Liquid outlet b; 11. Liquid inlet; 12. Inner cylinder sealing plate; 13. Drain port; 14. Water phase pipe; 15. Liquid level regulating outer pipe; 16. Liquid level regulating pipe; 17. Water phase outlet; 18. Bottom liquid outlet; 19. Liquid level regulating port. Detailed Implementation

[0017] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0018] Example: Figs. 1-2 As shown, a rare earth industry raffinate oil removal device includes an outer cylinder 1, which is a cylindrical outer shell of the device. A cylindrical inner cylinder 4 is disposed at the center of the inner cylinder 1. The bottom of the inner cylinder 4 is fixedly welded to the center of the bottom surface of the inner wall of the outer cylinder 1. An oil-separating membrane plate 2 is fixedly disposed at equal intervals between the inner cylinder 4 and the outer cylinder 1. An inner filter cylinder 5 is disposed inside the inner cylinder 4. An oil outlet a6 and an oil outlet b7 are respectively opened on the right and left sides of the lower part of the inner cylinder 4. A filter membrane assembly 8 is disposed inside the inner cylinder 4. A water phase pipe 14 and a liquid level regulating pipe 16 are connected to the right side of the outer cylinder 1.

[0019] An oil phase outlet 3 is fixedly connected to the top left side of the outer cylinder 1. There are three layers of oil-separating membrane 2. The outer edge of each layer of oil-separating membrane 2 is fixedly welded to the inner wall of the outer cylinder 1. A support frame is fixedly welded at equal intervals on the inner side. The other end of the support frame is fixedly welded to the inner cylinder 4. An oleophilic and hydrophobic membrane is provided on the surface of the oil-separating membrane 2.

[0020] Oil inlet a6 and oil inlet b7 are connected and surround the inner cylinder 4. The top of the inner cylinder 4 is fixedly welded with an inner cylinder sealing plate 12. The inner filter cylinder 5 is a cylindrical cylinder with a sealed bottom. The top of the inner filter cylinder 5 is fixedly welded to the bottom inner wall of the inner cylinder sealing plate 12. The center of the inner cylinder sealing plate 12 is provided with a liquid inlet 11. The top of the filter membrane assembly 8 is fixedly connected to the bottom inner wall of the inner cylinder sealing plate 12 by bolts. The top of the filter membrane assembly 8 is connected to the liquid inlet 11.

[0021] The top left and right sides of the inner filter cylinder 5 are provided with liquid outlets b10 and a9 at equal intervals.

[0022] The right bottom of the outer cylinder 1 is fixedly communicated with a discharge port 13, the top of the discharge port 13 is fixedly communicated with the bottom of a water communication pipe 14, the top of the water communication pipe 14 is fixedly communicated with the bottom of a liquid level adjusting pipe 16, the outside of the liquid level adjusting pipe 16 is fixedly sleeved with a liquid level adjusting outer pipe 15, and the connecting position of the water communication pipe 14 and the liquid level adjusting pipe 16 is located at the bottom end inside the liquid level adjusting outer pipe 15.

[0023] The right bottom of the liquid level adjusting outer pipe 15 is communicated with a water phase outlet 17, the top right side of the liquid level adjusting pipe 16 is fixedly communicated with a liquid level adjusting port 19, and the bottom of the inner cylinder 4 is surrounded by equidistantly arranged triangular bottom liquid outlets 18.

[0024] Working principle: the rare earth industry raffinate oil removal device, the oil-containing raffinate to be treated enters into the inside of the filter membrane assembly 8 through the liquid inlet 11, filters out the impurities with large particles in the raffinate, and the filtered raffinate penetrates into the cavity between the filter membrane assembly 8 and the inner filter cylinder 5 through the membrane surface. With continuous liquid filtration, the liquid level of the inner filter cylinder 5 gradually rises. When the liquid level rises to the position of each liquid outlet of the inner filter cylinder 5, the filtered liquid flows into the cavity between the inner cylinder 4 and the inner filter cylinder 5 from the liquid outlet a 9 and the liquid outlet b 10. With the continuous inflow of the filtered liquid, the cavity between the outer cylinder 1 and the inner cylinder 4 is filled through the bottom liquid outlet 18. The oil-containing raffinate continuously rises. Due to the density difference between oil and water, the oil floating on the water flows into the cavity between the outer cylinder 1 and the inner cylinder 4 through the oil passing port a 6 and the oil passing port b 7. With the continuous rise of the liquid level, the oil rises to the position of the oil separation membrane plate 2. The oil separation membrane plate 2 allows oil to pass through but the water phase cannot pass through. With the increasing of the oil, the oil floating on the water phase will flow out from the top oil phase outlet 3. In the running, the discharge port 13 is closed. In the test and maintenance, the discharge port 13 can be opened to discharge the liquid in the whole device. The water phase at the bottom enters into the water communication pipe 14 through the discharge port 13, and then enters into the liquid level adjusting pipe 16 upwards. The water phase enters into the cavity of the liquid level adjusting outer pipe 15 through the liquid level adjusting port 19, and flows out from the water phase outlet 17. The liquid level adjusting port 19 and the liquid level adjusting outer pipe 15 can adjust the height of the liquid level. The position of the liquid level adjusting port 19 can be adjusted on the liquid level adjusting pipe 16. According to the proportion of the oil phase and the water phase, in the case of more oil and less water, the position of the liquid level adjusting port 19 is adjusted downwards. In the case of less oil and more water, the liquid level adjusting port 19 can be adjusted upwards. The whole treatment process of the device can realize the filtration of the raffinate and the separation of the oil phase and the water phase, and the oil in the raffinate is removed.

[0025] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing embodiments of the present application have been described in detail, for the skilled in the art, it still can be modified, or for the equivalent replacement of part of the technical features of the technical solutions recorded in the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, shall be included within the scope of the present application.

Claims

1. A rare earth industry raffinate oil removal device, comprising an outer cylinder (1), characterized in that, The outer cylinder (1) is a cylindrical outer shell of the device. A cylindrical inner cylinder (4) is provided at the center of the inner cylinder (1). The bottom of the inner cylinder (4) is fixedly welded to the center of the bottom surface of the inner wall of the outer cylinder (1). An oil separator plate (2) is fixedly provided at equal intervals in the middle between the inner cylinder (4) and the outer cylinder (1). An inner filter cylinder (5) is provided inside the inner cylinder (4). An oil outlet a (6) and an oil outlet b (7) are respectively opened on the right and left sides of the lower part of the inner cylinder (4). A filter membrane assembly (8) is provided inside the inner cylinder (4). A water phase pipe (14) and a liquid level regulating pipe (16) are connected to the right side of the outer cylinder (1).

2. The rare earth industry raffinate oil removal device according to claim 1, characterized in that, An oil phase outlet (3) is fixedly connected to the top left side of the outer cylinder (1). The oil separator (2) has three layers. The outer edge of each layer of oil separator (2) is fixedly welded to the inner wall of the outer cylinder (1). A support frame is fixedly welded at equal intervals on the inner side. The other end of the support frame is fixedly welded to the inner cylinder (4). An oleophilic and hydrophobic membrane is provided on the surface of the oil separator (2).

3. The rare earth industry raffinate oil removal device according to claim 1, characterized in that, The oil inlet a (6) and oil inlet b (7) are connected and surround the inner cylinder (4). The top of the inner cylinder (4) is fixedly welded with an inner cylinder sealing plate (12). The inner filter cylinder (5) is a cylindrical cylinder with a sealed bottom. The top of the inner filter cylinder (5) is fixedly welded to the bottom surface of the inner wall of the inner cylinder sealing plate (12). The center of the inner cylinder sealing plate (12) is provided with a liquid inlet (11). The top of the filter membrane assembly (8) is fixedly connected to the bottom surface of the inner wall of the inner cylinder sealing plate (12) by bolts. The top of the filter membrane assembly (8) is connected to the liquid inlet (11).

4. The rare earth industry raffinate oil removal device according to claim 1, characterized in that, The top left and right sides of the inner filter cylinder (5) are provided with liquid outlet b (10) and liquid outlet a (9) at equal intervals.

5. The rare earth industry raffinate oil removal device according to claim 1, characterized in that, An air vent (13) is fixedly connected to the bottom right side of the outer cylinder (1). The top of the air vent (13) is fixedly connected to the bottom of the water phase pipe (14). The top of the water phase pipe (14) is fixedly connected to the bottom of the liquid level regulating pipe (16). A liquid level regulating outer pipe (15) is fixedly sleeved on the outside of the liquid level regulating pipe (16). The connection position between the water phase pipe (14) and the liquid level regulating pipe (16) is located at the bottom end inside the liquid level regulating outer pipe (15).

6. The rare earth industry raffinate oil removal device according to claim 5, characterized in that, The bottom right side of the liquid level regulating outer pipe (15) is connected to a water phase outlet (17), the top right side of the liquid level regulating pipe (16) is fixedly connected to a liquid level regulating port (19), and the bottom of the inner cylinder (4) is provided with triangular bottom liquid outlets (18) at equal intervals.

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