Small-sized oil-containing waste diatomite regeneration system for aluminum plant

Abstract

The utility model provides a kind of miniaturization oil-containing waste diatomite regeneration system of aluminium factory, it is related to aluminium factory waste diatomite processing technical field, including circulating water pool, cleaning jar, refining jar, filter and industrial microwave oven.The utility model adds oil-containing diatomite into the cleaning jar of 10% dilute sulfuric acid aqueous solvent by content, opens vibration rod and mechanical stirrer to realize stirring and ultrasonic wave, when the inside of cleaning jar is uniform, reaction is carried out, after stirring a certain time reaction is complete, static, stratification, the upper layer oil is extracted into refining jar through communicating pipe to carry out deacidification, desoap and dehydration treatment and obtain finished product rolling oil, then open valve and the water-soil mixture of lower layer is transported to the inside of filter through second connecting pipe, after filtration, the soil produced is placed in industrial microwave oven after deacidification in 100-130 DEG C environment and is regenerated and dried, after drying to no moisture, place to normal temperature screening and bagging, reuse to original rolling machine filtration.

Description

Technical Field

[0001] This utility model relates to the field of waste diatomite treatment technology in aluminum plants, and in particular to a miniaturized oily waste diatomite regeneration system for aluminum plants. Background Technology

[0002] Diatomaceous earth is a commonly used filter medium in aluminum plant production processes to remove impurities. However, after use, diatomaceous earth absorbs a large amount of oil, forming oily diatomaceous earth waste.

[0003] Existing methods for disposing of diatomaceous earth typically include incineration, roasting and fractionation, and sulfuric acid processing. However, incineration is costly and fails to realize the utilization value of oily diatomaceous earth, contradicting market economic principles and environmental incentive policies. Roasting and fractionation requires high-temperature operation, which can easily lead to the cracking and oxidation of rolling oil molecules. Regenerated oil is prone to aging during reuse and poses a risk of flammability and explosion, resulting in poor oil quality and low economic value. While sulfuric acid processing offers advantages such as safety, high efficiency, and high oil quality, it relies on centralized processing by enterprises. The recycled rolling oil (D100) and aluminum foil oil (D80) are mixed, making it only suitable for use as fuel oil – a waste of resources. Utility Model Content

[0004] The purpose of this invention is to solve the problems in the prior art where the oil and diatomaceous earth produced after the above three methods cannot be reused in the rolling mill, and to propose a miniaturized oil-containing waste diatomaceous earth regeneration system for aluminum plants.

[0005] To achieve the above objectives, this utility model designs a separate micro-equipment combination for each rolling mill to regenerate rolling oil and diatomaceous earth. The technical solution adopted is as follows: a miniaturized oil-containing waste diatomaceous earth regeneration system for aluminum plants, comprising a circulating water tank, a cleaning tank, a refining tank, a filter, an industrial microwave oven, and a column-type micro-filter. The cleaning tank is equipped with a mechanical stirrer and a vibrating rod inside. The refining tank has a drive motor mounted on its top, and a stirring rod connected to the bottom of the drive motor, with the stirring rod located inside the refining tank.

[0006] Preferably, a pump is connected to the side of the circulating water tank via a pipe, and a delivery pipe is connected to the side of the pump.

[0007] Preferably, one end of the conveying pipe is connected to the top of the cleaning tank, and the cleaning tank is provided with a connecting pipe inside.

[0008] Preferably, one end of the connecting pipe is connected to the top of the refining tank, and the bottom of the refining tank is connected to a discharge pipe.

[0009] Preferably, one end of the discharge pipe is connected to an oil sludge storage tank, and the side of the discharge pipe is connected to a first connecting pipe.

[0010] Preferably, one end of the first connecting pipe is connected to a rolling oil storage tank, and the column-type micro filter is disposed between the refining tank and the rolling oil storage tank.

[0011] Preferably, a second connecting pipe is connected to the side of the cleaning tank, and a valve is provided on the second connecting pipe.

[0012] Preferably, one end of the valve is connected to the filter, and a third connecting pipe is connected to the side of the filter.

[0013] Preferably, one end of the third connecting pipe is connected to the top of the circulating water tank.

[0014] Preferably, the industrial microwave oven has a sealed door on its side.

[0015] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0016] 1. In this utility model, oil-containing diatomaceous earth is added to a cleaning tank containing 10% dilute sulfuric acid as a solvent. The vibrator and mechanical stirrer are turned on to achieve stirring and ultrasonic treatment. After the interior of the cleaning tank is uniform, the reaction takes place. After stirring for a certain period of time, the reaction is complete and the layers are separated. The upper layer of oil is pumped to a refining tank through a connecting pipe for deacidification, desoaping, and dehydration to obtain the finished rolling oil. Then, the valve is opened to transport the lower layer of water and soil mixture to the inside of the filter through the second connecting pipe. After filtration, the water re-enters the circulating water tank through the third connecting pipe. The soil produced after filtration is deacidified and then placed in an industrial microwave oven to be regenerated and dried in an environment of 100℃-130℃. After drying until there is no moisture, it is placed on a room temperature sieve for packaging and reused in the original rolling mill for filtration. Reasons for reusing rolling oil: The molecular chains of the rolling oil washed at low temperature are not broken, so the distillation range, flash point, and viscosity remain unchanged; inorganic acids are eliminated after deacidification, so the acid value is the same as the original rolling oil; the saponification value is slightly reduced after desoaping, but can be supplemented with additives, which improves the foaming problem; the water content of the rolling oil is qualified after dehydration; the molecules are not broken or oxidized, so the iodine value remains unchanged; the micropore diameter of diatomaceous earth is tens of nanometers, while the molecular length of lubricating oil leaked from the rolling mill is within ten nanometers (3 nanometers for rolling oil), so the lubricating oil content in the regenerated rolling oil is the same as that in the original rolling mill oil tank, which will not affect the annealing level of the original rolling oil (in fact, the annealing level is optimized due to the desoaping process); Reasons for reusing diatomaceous earth: Diatomaceous earth is microwave-dried at low temperature and has no moisture; the diatomaceous earth contains 4% rolling oil that has not been broken and has been deacidified; the particle size (diatomaceous earth particle diameter) of diatomaceous earth is slightly reduced during the regeneration process (the permeability is slightly reduced), and adding a little high-permeability diatomaceous earth during reuse can solve this problem.

[0017] 2. In this utility model, the refining tank includes deacidification, desoaping, and dehydration processes. The oil entering the refining tank is driven by a motor to rotate the stirring rod, which facilitates the stirring of the oil. After stirring for a certain period of time, the oil is allowed to settle, allowing impurities to be discharged through the conical opening below into the sludge storage tank. One end of the first connecting pipe is connected to a column-type micro filter, which facilitates the filtration of the upper rolling oil and its transport through the first connecting pipe to the interior of the rolling oil storage tank for storage. This facilitates the recycling of the regenerated rolling oil, conforms to the policy of prioritizing the treatment of waste generated by the producer, and utilizes all oil and soil, reducing transportation costs and labor costs. Furthermore, since the original rolling mill is used, the calcination process is eliminated, saving a significant amount of heat energy and avoiding the waste of 3%-6% of the rolling oil in the diatomaceous earth micropores. This helps save costs, and long-term use can significantly enhance the market competitiveness of aluminum plants. Attached Figure Description

[0018] Figure 1 This utility model provides a three-dimensional structural schematic diagram of a miniaturized oily waste diatomite regeneration system for aluminum plants.

[0019] Figure 2 This utility model presents another structural schematic diagram of a miniaturized oily waste diatomite regeneration system for aluminum plants.

[0020] Figure 3 This utility model provides a partial cross-sectional structural diagram of a miniaturized oily waste diatomite regeneration system for aluminum plants.

[0021] Figure 4 This utility model presents a partially unfolded structural diagram of a miniaturized oily waste diatomite regeneration system for aluminum plants.

[0022] Figure 5 This utility model presents a partial structural schematic diagram of a miniaturized oily waste diatomaceous earth regeneration system for aluminum plants.

[0023] Legend: 1. Circulating water tank; 2. Pump; 3. Delivery pipe; 4. Cleaning tank; 5. Mechanical agitator; 6. Connecting pipe; 7. Refining tank; 8. Oil sludge storage tank; 9. First connecting pipe; 10. Rolling oil storage tank; 11. Second connecting pipe; 12. Valve; 13. Filter; 14. Third connecting pipe; 15. Industrial microwave oven; 16. Drive motor; 17. Stirring rod; 18. Sealing door; 19. Vibrator; 20. Column-type micro filter. Detailed Implementation

[0024] To better understand the above-mentioned objectives, features, and advantages of this utility model, the present utility model will be further described below with reference to the accompanying drawings and embodiments. It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0025] Many specific details are set forth in the following description in order to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Therefore, the present invention is not limited to the specific embodiments disclosed in the following specification.

[0026] Example 1: As Figures 1-5 As shown, this utility model provides a technical solution: a miniaturized oily waste diatomaceous earth regeneration system for aluminum plants, including a circulating water tank 1, a cleaning tank 4, a refining tank 7, a filter 13, an industrial microwave oven 15, and a column-type micro filter 20. The cleaning tank 4 is equipped with a mechanical stirrer 5 and a vibrating rod 19. A drive motor 16 is installed on the top of the refining tank 7, and a stirring rod 17 is connected to the bottom of the drive motor 16. The stirring rod 17 is located inside the refining tank 7. A pump 2 is connected to the side of the circulating water tank 1 through a pipe. A conveying pipe 3 is connected to the side of the pump 2. One end of the conveying pipe 3 is connected to the top of the cleaning tank 4. A connecting pipe 6 is installed inside the cleaning tank 4. A second connecting pipe 11 is connected to the side of the cleaning tank 4. A valve 12 is installed on the second connecting pipe 11. One end of a third connecting pipe 14 is connected to the top of the circulating water tank 1. A sealing door 18 is installed on the side of the industrial microwave oven 15.

[0027] In this embodiment, oily diatomaceous earth is added to a cleaning tank 4 containing 10% dilute sulfuric acid as a solvent. The vibrator 19 and the mechanical stirrer 5 are turned on to achieve stirring and ultrasonic waves. After the interior of the cleaning tank 4 is homogeneous, the reaction takes place. After stirring for a certain period of time, the reaction is complete and the mixture settles and separates into layers. The upper layer of oil is pumped into a refining tank 7 through a connecting pipe 6. Then, the valve 12 is opened to transport the lower layer of water-soil mixture to the interior of a filter 13 through a second connecting pipe 11. After filtration by the filter 13, the water re-enters the interior of the circulating water tank 1 through a third connecting pipe 14. The soil produced after filtration is deacidified and then placed in an industrial microwave oven 15 to be regenerated and dried in an environment of 100℃-130℃. After drying until there is no moisture, it is placed on a room temperature sieve for packaging and reused for filtration in the original rolling mill.

[0028] Example 2: Figures 1-5 As shown, one end of the connecting pipe 6 is connected to the top of the refining tank 7, the bottom of the refining tank 7 is connected to the discharge pipe, one end of the discharge pipe is connected to the sludge storage tank 8, the side of the discharge pipe is connected to the first connecting pipe 9, one end of the first connecting pipe 9 is connected to the rolling oil storage tank 10, and the column-type micro filter 20 is set between the refining tank 7 and the rolling oil storage tank 10.

[0029] In this embodiment, the refining tank 7 includes deacidification, desoaping, and dehydration processes. The oil entering the refining tank 7 is driven by the drive motor 16 to rotate the stirring rod 17, which facilitates the stirring of the oil. After stirring for a certain period of time, the oil is allowed to settle, allowing impurities to be discharged through the lower conical opening into the sludge storage tank 8. One end of the first connecting pipe 9 is connected to a column-type micro filter 20, which facilitates the filtration of the upper rolling oil and its transport through the first connecting pipe 9 to the interior of the rolling oil storage tank 10 for storage. This facilitates the recycling of the regenerated rolling oil, conforms to the policy of prioritizing the treatment of waste generated by the producer, and utilizes all the oil and soil, reducing transportation costs and labor costs. Furthermore, since the original rolling mill is used, the calcination process is eliminated, saving a large amount of heat energy and avoiding the waste of 3%-6% of the rolling oil in the diatomaceous earth micropores. This helps save costs, and long-term use can significantly enhance the market competitiveness of aluminum plants.

[0030] The working principle of this embodiment is as follows: First, oil-containing diatomaceous earth is added to a cleaning tank 4 containing 10% dilute sulfuric acid solution. The vibrator and mechanical stirrer are then turned on to achieve stirring and ultrasonic treatment. Once the interior of the cleaning tank 4 is homogeneous, a reaction occurs. After stirring for a certain period and the reaction is complete, the mixture settles and separates into layers. The upper layer of oil is pumped into a refining tank 7 through a connecting pipe 6. Then, valve 12 is opened to transport the lower layer of water-soil mixture through a second connecting pipe 11 to the interior of a filter 13. After filtration by the filter 13, the water re-enters the circulating water tank 1 through a third connecting pipe 14. The resulting soil is deacidified and then placed in an industrial microwave oven 15 at 100°C. The oil is regenerated and dried in an environment of -130℃ until it is free of moisture. Then it is placed on a screen at room temperature and bagged for reuse in the original rolling mill filtration. The refining tank 7 includes deacidification, desoaping and dehydration processes. The oil entering the refining tank 7 is driven by the drive motor 16 to rotate the stirring rod 17, which is beneficial for stirring the oil. After stirring for a certain period of time, it is allowed to stand, so that impurities are discharged through the lower conical opening to the sludge storage tank 8. One end of the first connecting pipe 9 is connected to a column-type micro filter 20, which is beneficial for filtering the upper layer of rolling oil and then transporting it through the first connecting pipe 9 to the interior of the rolling oil storage tank 10 for storage, which is beneficial for realizing the recycling of the regenerated rolling oil.

[0031] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A miniaturized oily waste diatomaceous earth regeneration system for aluminum plants, characterized in that: The system includes a circulating water tank (1), a cleaning tank (4), a refining tank (7), a filter (13), an industrial microwave oven (15), and a column-type micro filter (20). The cleaning tank (4) is equipped with a mechanical stirrer (5) and a vibrating rod (19). The top of the refining tank (7) is equipped with a drive motor (16), and the bottom of the drive motor (16) is connected to a stirring rod (17). The stirring rod (17) is located inside the refining tank (7).

2. The miniaturized oily waste diatomaceous earth regeneration system for aluminum plants according to claim 1, characterized in that: A pump (2) is connected to the side of the circulating water tank (1) via a pipe, and a delivery pipe (3) is connected to the side of the pump (2).

3. The miniaturized oily waste diatomaceous earth regeneration system for aluminum plants according to claim 2, characterized in that: One end of the delivery pipe (3) is connected to the top of the cleaning tank (4), and the cleaning tank (4) is provided with a connecting pipe (6).

4. The miniaturized oily waste diatomaceous earth regeneration system for aluminum plants according to claim 3, characterized in that: One end of the connecting pipe (6) is connected to the top of the refining tank (7), and the bottom of the refining tank (7) is connected to the discharge pipe.

5. The miniaturized oily waste diatomaceous earth regeneration system for aluminum plants according to claim 4, characterized in that: One end of the discharge pipe is connected to an oil sludge storage tank (8), and the side of the discharge pipe is connected to a first connecting pipe (9).

6. The miniaturized oily waste diatomaceous earth regeneration system for aluminum plants according to claim 5, characterized in that: One end of the first connecting pipe (9) is connected to the rolling oil storage tank (10), and the column micro filter (20) is set between the refining tank (7) and the rolling oil storage tank (10).

7. The miniaturized oily waste diatomaceous earth regeneration system for aluminum plants according to claim 1, characterized in that: The cleaning tank (4) is connected to a second connecting pipe (11) on its side, and a valve (12) is provided on the second connecting pipe (11).

8. The miniaturized oily waste diatomaceous earth regeneration system for aluminum plants according to claim 7, characterized in that: One end of the valve (12) is connected to the filter (13), and a third connecting pipe (14) is connected to the side of the filter (13).

9. The miniaturized oily waste diatomaceous earth regeneration system for aluminum plants according to claim 8, characterized in that: One end of the third connecting pipe (14) is connected to the top of the circulating water tank (1).

10. The miniaturized oily waste diatomaceous earth regeneration system for aluminum plants according to claim 1, characterized in that: The industrial microwave oven (15) is provided with a sealed door (18) on its side.

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