Device for dehydrating and decolorizing white oil after extraction

Abstract

The utility model discloses a dehydrating and decoloring device for white oil after extraction, and relates to the technical field of lithium batteries. A liquid inlet is formed in the upper end of the tank body, and a liquid outlet is formed in the bottom of the tank body; the composite filter layer is arranged in the tank body, the tank body is divided into an upper cavity and a lower cavity by the composite filter layer, and the composite filter layer is used for filtering impurities and water in the white oil. According to the utility model, white oil separated by the centrifugal machine can be filtered, impurities and water in the white oil are filtered out, and the recycling requirement is met; power equipment does not need to be arranged, so that the production cost is remarkably reduced, emission of greenhouse gases such as carbon dioxide generated by power generation is reduced, and positive significance is achieved for environmental protection.

Description

TECHNICAL FIELD

[0001] The utility model relates to lithium battery technical field especially relates to white oil extraction after dehydration and decoloration device. BACKGROUND

[0002] Lithium battery diaphragm is the thin film for lithium battery, can prevent electrolyte and protect the internal element of battery. Polyethylene diaphragm production needs a large amount of white oil, before diaphragm finished product, extraction agent is extracted to white oil. After that, the extraction agent mixed liquid containing white oil is separated by centrifugal separator, and the extraction agent and white oil are recycled. But the white oil after centrifugal separation is slightly yellow and turbid, contains about 5% moisture, needs further treatment.

[0003] Traditional white oil extraction after diaphragm decoloration tank equipment structure is complex, cost is high, needs a large amount of power consumption heating evaporation moisture, influences recovery cost, is not suitable for the decoloration dehydration process after ion liquid extraction diaphragm white oil. UTILITY MODEL CONTENT

[0004] The utility model mainly aims at providing white oil extraction after dehydration and decoloration device to solve above-mentioned problem.

[0005] To achieve the above purpose, the utility model provides white oil extraction after dehydration and decoloration device, including:

[0006] Tank body, the tank body upper end is provided with liquid inlet, and the bottom is provided with liquid outlet;

[0007] Composite filter layer, the composite filter layer is arranged in the tank body, the composite filter layer divides the tank body into two cavity bodies, and the composite filter layer is used for filtering the impurity and moisture in white oil.

[0008] Further, the composite filter layer is composed of filter layer, permeation layer, adsorption layer, secondary adsorption layer and composite permeation layer from top to bottom.

[0009] Further, the filter layer support plate is arranged in the tank body, the filter layer support plate is provided with opening, and the composite filter layer is arranged on the filter layer support plate.

[0010] Further, the top of the composite filter layer is provided with filter layer pressing plate, the filter layer pressing plate is detachably connected with the filter layer support plate, and the filter layer pressing plate is provided with filter opening corresponding to the opening.

[0011] Further, the filter layer support plate is evenly provided with a plurality of threaded columns, the composite filter layer and the filter layer support plate are provided with through holes corresponding to the threaded columns, and the threaded columns pass through the through holes and are screw-connected with nuts.

[0012] Further, a temporary liquid outlet is arranged on the sidewall of the groove body, and the temporary liquid outlet is above the filter layer pressing plate.

[0013] Further, a liquid level display is arranged on the outer wall of the groove body.

[0014] Further, a groove cover is arranged on the top of the groove body.

[0015] Further, a handle is arranged on the sidewall of the groove body and the groove cover.

[0016] The utility model has the advantages of the following beneficial effects:

[0017] The utility model can filter white oil separated by a centrifugal machine, filter out impurities and moisture in the white oil, meet the recycling requirement, and does not need to set up power equipment, remarkably reduces production cost, reduces greenhouse gas emission such as carbon dioxide generated by power generation, and has positive significance for environmental protection. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is the front view of the white oil extraction dehydration and decolorization device of the utility model;

[0019] Figure 2 It is the A-A sectional view of the white oil extraction dehydration and decolorization device of the utility model;

[0020] Figure 3 It is the B enlarged view of the white oil extraction dehydration and decolorization device of the utility model;

[0021] Figure 4 It is the overall schematic view of the white oil extraction dehydration and decolorization device of the utility model.

[0022] In the drawing: 1-groove body; 2-liquid inlet; 3-liquid outlet; 4-composite filter layer; 5-filter layer support plate; 6-filter layer pressing plate; 7-temporary liquid outlet; 8-groove cover. DETAILED DESCRIPTION

[0023] In order to achieve the above-mentioned purposes and effects, the utility model adopts the technical means and structure, and the characteristics and functions of the preferred embodiments of the utility model are described in detail in combination with the drawings.

[0024] As shown in the accompanying drawings, Figures 1-4 The utility model provides a white oil extraction dehydration and decolorization device, which comprises:

[0025] Groove body 1, the upper end of groove body 1 is provided with liquid inlet 2, and the bottom is provided with liquid outlet 3;

[0026] The composite filter layer 4 is arranged in the tank body 1, and the composite filter layer 4 divides the tank body 1 into two cavities, wherein the liquid inlet is arranged in the upper cavity, and the liquid outlet is arranged in the lower cavity, and the composite filter layer 4 is used for filtering impurities and moisture in the white oil.

[0027] In use, the white oil is introduced into the tank body 1 through the liquid inlet, and the white oil is stored in the upper cavity of the tank body 1 and slowly flows to the lower cavity under the action of gravity through the composite filter layer 4. When passing through the composite filter layer 4, the composite filter layer 4 filters out the impurities and moisture in the white oil, meeting the requirements of subsequent recycling.

[0028] The utility model discloses a whole need not power equipment, and compared with the equipment that the traditional need is a lot of power consumption heating evaporation moisture, energy consumption advantage is remarkable. According to the scale of processing 1 cubic meter white oil per year, the traditional equipment power consumption is about 20kW per hour, and the utility model power consumption is almost negligible. This not only reduces the production cost, but also reduces the greenhouse gas emissions such as carbon dioxide generated by power generation, and the annual carbon dioxide emissions are almost 0, which has positive significance for environmental protection.

[0029] Meanwhile, the utility model does not use additional chemical agent to carry out dehydration and decoloration in the white oil treatment process, and the traditional technology can use some chemical agents, and can produce waste water or waste residue and other pollutants after use. For example, the chemical reagent used in some traditional dehydration technology can produce waste water containing heavy metal ions, and improper treatment can pollute the water environment. The utility model dehydrates and decolorizes through the physical adsorption mode, avoids the use of chemical agents, and reduces the pollution risk from the source.

[0030] Specifically, the composite filter layer 4 is composed of a filter layer, a permeation layer, an adsorption layer, a secondary adsorption layer and a composite permeation layer from top to bottom. The filter layer is used to filter solid or mechanical impurities; the permeation layer acts on the next layer buffer; the adsorption layer is mainly used for adsorbing moisture in the white oil, and the secondary adsorption layer further filters out the moisture; the composite permeation layer provides support strength for the protection layer, and prevents the moisture from mixing into the finished product when the adsorption layer is in a saturated state, thereby maintaining stable filtering performance. Ensure that the quality of the outflowing white oil is higher.

[0031] In the embodiment, the filter layer support plate 5 is arranged in the tank body 1, the filter layer support plate 5 divides the tank body 1 into two cavities, the filter layer support plate 5 is provided with an opening, the composite filter layer 4 is arranged on the filter layer support plate 5, the composite filter layer 4 is supported by the filter layer support plate 5, and the white oil can flow into the lower cavity through the opening after flowing through the composite filter layer 4.

[0032] Specifically, the top of the composite filter layer 4 is provided with a filter layer pressing plate 6, the filter layer pressing plate 6 is detachably connected with the filter layer support plate 5, and the filter layer pressing plate 6 is provided with a filter port corresponding to the opening. The filter layer pressing plate 6 and the filter layer support plate 5 cooperate to lay and compress the composite filter layer 4.

[0033] Specifically, the filter layer support plate 5 is uniformly provided with a plurality of threaded columns, the composite filter layer 4 and the filter layer support plate 5 are both provided with through holes matched with the threaded columns, the threaded columns pass through the through holes and are threadedly connected with nuts, and the filter layer pressing plate 6 is fixed on the filter layer support plate 5 and the composite filter layer 4 is pressed tightly by the nuts.

[0034] Preferably, the nuts can be wing nuts, which are convenient to disassemble.

[0035] In another embodiment, the sidewall of the tank 1 is provided with a temporary liquid outlet 7, which is located above and close to the filter layer pressing plate 6, so that the unfiltered white oil can be temporarily discharged out of the tank 1.

[0036] In another embodiment, the outer wall of the tank 1 is provided with a liquid level display to observe the liquid condition.

[0037] Specifically, the liquid level display can be a vertical transparent glass tube, the bottom of which is in communication with the bottom of the tank 1, so that the liquid level in the tank 1 can be obtained by observing the liquid level in the glass tube.

[0038] In another embodiment, the top of the tank 1 is provided with a tank cover 8 to prevent foreign matter from mixing in.

[0039] In another embodiment, the tank cover 8 and the sidewall of the tank 1 are provided with handles to facilitate carrying.

[0040] In another embodiment, the inlet 2, the outlet 3 and the temporary outlet 7 are all provided with valves.

[0041] In another embodiment, if a larger scale of white oil needs to be treated, the size of the tank can be increased or a plurality of the same devices can be connected in parallel. For example, a large-scale lithium battery separator production enterprise has a white oil treatment capacity of 100 times the small-scale test, the length, width and height of the tank can be enlarged in proportion or the number of tanks can be increased, and the area of the composite filter layer 4 can be adjusted accordingly. The device components such as the liquid level display and the valve body can also be selected and configured as needed to meet the requirements of large-scale production.

[0042] The device is not only suitable for the dehydration and decolorization treatment of white oil after ionic liquid extraction of the separator, but also can be used for the treatment of white oil of other similar systems to a certain extent after adjusting the parameters of the composite filter material, and has strong adaptability and can be applied in a wider white oil treatment field.

[0043] The above only describes the preferred embodiments of the present application, not all embodiments, and anyone should know that any structural changes made under the guidance of the present application, any technical solutions similar or similar to the present application, all belong to the protection scope of the present application.

Claims

1. A device for dehydrating and decolorizing white oil after extraction, characterized by, Include: The groove body (1), the upper end of the groove body (1) is provided with a liquid inlet (2), and the bottom is provided with a liquid outlet (3); The composite filter layer (4) is arranged in the groove body (1), the composite filter layer (4) divides the groove body (1) into two cavities, and the composite filter layer (4) is used for filtering impurities and moisture in white oil.

2. The white oil extraction and dewatering and decoloring apparatus according to claim 1, wherein The composite filter layer (4) is composed of a filter layer, a permeation layer, an adsorption layer, a secondary adsorption layer and a composite permeation layer from top to bottom.

3. The white oil extraction and dewatering and decoloring apparatus according to claim 2, wherein The filter layer support plate (5) is arranged in the groove body (1), the filter layer support plate (5) is provided with an opening, and the composite filter layer (4) is arranged on the filter layer support plate (5).

4. The white oil extraction and dewatering and decoloring apparatus according to claim 3, wherein The top of the composite filter layer (4) is provided with a filter layer pressing plate (6), the filter layer pressing plate (6) is detachably connected with the filter layer support plate (5), and the filter layer pressing plate (6) is provided with a filter opening corresponding to the opening.

5. The white oil extraction and dewatering and decoloring apparatus according to claim 4, wherein The filter layer support plate (5) is uniformly provided with a plurality of threaded columns, the composite filter layer (4) and the filter layer support plate (5) are provided with through holes matched with the threaded columns, the threaded columns pass through the through holes and are screw connected with nuts.

6. The white oil extraction and dewatering and decoloring apparatus according to claim 5, wherein The side wall of the groove body (1) is provided with a temporary liquid outlet (7), and the temporary liquid outlet (7) is located above the filter layer pressing plate (6).

7. The white oil extraction and dewatering and decoloring apparatus according to claim 1, wherein The outer wall of the groove body (1) is provided with a liquid level display.

8. The white oil extraction and dewatering and decoloring apparatus according to any one of claims 1 to 7, wherein The top of the groove body (1) is provided with a groove cover (8).

9. The white oil extraction and dewatering and decoloring apparatus according to claim 8, wherein The groove cover (8) and the side wall of the groove body (1) are provided with handles.

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