WO2024119361A1 - Foil-rolling oil removal device and rolling oil removal method - Google Patents

Foil-rolling oil removal device and rolling oil removal method Download PDF

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Publication number
WO2024119361A1
WO2024119361A1 PCT/CN2022/136834 CN2022136834W WO2024119361A1 WO 2024119361 A1 WO2024119361 A1 WO 2024119361A1 CN 2022136834 W CN2022136834 W CN 2022136834W WO 2024119361 A1 WO2024119361 A1 WO 2024119361A1
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Prior art keywords
foil
rolling
extraction
extraction tank
extractant
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PCT/CN2022/136834
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French (fr)
Chinese (zh)
Inventor
刘科
李正林
王成豪
宋启超
季玉琴
李学法
张国平
Original Assignee
江阴纳力新材料科技有限公司
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Application filed by 江阴纳力新材料科技有限公司 filed Critical 江阴纳力新材料科技有限公司
Priority to PCT/CN2022/136834 priority Critical patent/WO2024119361A1/en
Publication of WO2024119361A1 publication Critical patent/WO2024119361A1/en

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  • the present application relates to the technical field of foil material preparation, and in particular to a foil material rolling degreasing device and a foil material rolling degreasing method.
  • the foil In the production process of traditional aluminum foil, there are multiple rolling and thinning steps, and rolling oil must be added during the rolling process.
  • the main functions of rolling oil are lubrication, cooling, washing and oxidation prevention.
  • the foil has the following problems: 1. Rolling oil remains on the surface of the produced foil, resulting in reduced surface polarity and uneven dyne value; 2.
  • Foil coating causes missing coating and poor peeling.
  • conductive materials such as active materials are mainly coated on battery foil through coating technology. The residual rolling oil on the surface will cause problems such as missing coating and weakened peeling force; 3.
  • the surface wetting tension of the foil is directly related to the amount of oil attached to the foil surface.
  • the surface tension of completely degreased aluminum foil is above 72 dynes, the surface tension of aluminum foil after rough rolling is about 31 dynes, and the surface tension of aluminum foil after fine rolling is about 32 dynes. If the oil is not thoroughly removed, the foil product will have defects such as oil stickiness, blistering, lines, and oil spots; the above problems seriously affect the subsequent coating and use of the foil.
  • a foil rolling degreasing device comprising:
  • a foil rolling mill used for rolling foil
  • An extraction tank in which an extractant is injected, a liquid sealing structure is provided at the opening of the extraction tank, and the extraction tank extracts and removes oil from the foil output by the foil rolling machine;
  • a dryer the dryer being used to dry the foil outputted from the extraction tank;
  • a foil conveyor is used to convey the foil from the foil rolling machine, the extraction tank to the dryer.
  • a plurality of overflow plates are disposed in the extraction tank, and the heights of the overflow plates are sequentially increased along the moving direction of the foil, and the plurality of overflow plates divide the extraction tank into a plurality of extraction chambers.
  • the extraction tank is provided with an extractant outlet on the foil input side of the extraction tank; and the extraction tank is provided with an extractant inlet on the foil output side of the extraction tank.
  • the extractant enters from the extractant inlet, flows through each of the extraction chambers in sequence, and is discharged from the extractant outlet.
  • At least one circulating cooler is disposed in the extraction tank.
  • each of the extraction chambers is provided with a circulating cooler, and the circulating cooler is used to adjust the temperature of the extractant in the extraction chamber.
  • the liquid sealing structure includes a sealing plate covering the opening of the extraction tank, the sealing plate being provided with at least one exhaust port, and the sealing plate being provided with a liquid storage tank and a sealing cap at each exhaust port, the liquid storage tank being arranged around the circumference of the exhaust port; the sealing cap is covered at the exhaust port, and the edge of the sealing cap is immersed below the liquid level of the liquid storage tank.
  • the extraction tank is externally connected to a positive pressure gas source
  • the positive pressure gas source is connected to the space above the liquid surface of the extraction tank
  • the positive pressure gas source is used to maintain the gas pressure in the extraction tank greater than the ambient gas pressure
  • the foil conveyor includes an unwinding mechanism, a rewinding mechanism, a tension mechanism, and a plurality of conveying rollers.
  • the unwinding mechanism is arranged at the input side of the foil rolling machine, and the winding mechanism is arranged at the output side of the dryer.
  • the tension mechanism comprises at least one tension roller, and the tension roller is used to provide tension to the foil.
  • the tension mechanism includes a first tension roller, a second tension roller and a third tension roller, the first tension roller is arranged between the unwinding mechanism and the foil roll, the second tension roller is arranged between the foil roll and the extraction tank, and the third tension roller is arranged between the extraction tank and the dryer.
  • each of the extraction chambers is independently provided with a liquid drain port, and the liquid drain port is provided at the bottom of each of the extraction tanks.
  • the dryer includes a shell, and a plurality of air nozzles are disposed in the shell.
  • the air nozzles are sequentially arranged along the moving direction of the foil, and the blowing direction of the air nozzles is toward the foil.
  • the present application provides a rolling degreasing method for foil, wherein the rolling degreasing method adopts the above-mentioned foil rolling degreasing device, and the rolling degreasing method comprises the following steps:
  • the foil After the foil is rolled, it is sequentially extracted with an extractant and dried to remove the rolling oil on the surface of the foil.
  • countercurrent contact extraction is used during the extraction process, and the movement direction of the foil is opposite to the flow direction of the extractant.
  • the extractant comprises dichloromethane.
  • the extractant is cooled during the extraction process.
  • an inert atmosphere is used during the extraction process.
  • the inert atmosphere has a pressure greater than the ambient gas pressure.
  • the gas of the inert atmosphere includes nitrogen.
  • the drying temperature is about 60-100°C, for example, 60°C, 65°C, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C or 100°C.
  • the present application extracts and dries the rolled foil to achieve continuous and efficient removal of rolling oil on the foil surface.
  • the temperature of the foil increases after rolling, and the surface rolling oil is effectively removed during contact with the extractant.
  • the liquid seal structure is used to reduce the volatilization of the extractant and the generation of condensed water, thereby preventing condensed water from dripping onto the foil surface and affecting the surface performance of the foil.
  • the oil content can be reduced to below 0.1%.
  • FIG1 is a schematic diagram of the structure of a foil rolling oil removal device provided in some embodiments of the present application.
  • FIG. 2 is a diagram showing the internal structure of an extraction tank provided in one embodiment of the present application.
  • FIG3 is a cross-sectional view of a liquid sealing structure provided in one embodiment of the present application at an exhaust port.
  • 100-foil rolling machine 200-extraction tank; 201-overflow plate; 202-circulating cooler; 203-extraction agent inlet; 204-extraction agent outlet; 205-positive pressure air source; 300-dryer; 301-air nozzle; 400-liquid sealing structure; 401-exhaust port; 402-liquid storage tank; 403-sealing cap; 500-unwinding mechanism; 600-winding mechanism; 700-transmission roller; 800-tension mechanism; 801-first tension roller; 802-second tension roller; 803-third tension roller.
  • first and second are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as “first” and “second” may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality” is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
  • an embodiment of the present application provides a foil rolling oil removal device, as shown in FIG1 , comprising:
  • a foil rolling machine 100 used for rolling foil
  • An extraction tank 200 wherein an extractant is injected into the extraction tank 200, and a liquid sealing structure 400 is provided at the opening of the extraction tank 200, and the extraction tank 200 extracts and removes oil from the foil output by the foil rolling machine 100;
  • a dryer 300 the dryer 300 is used to dry the foil output from the extraction tank 200;
  • the foil conveyor is used to convey the foil from the foil rolling mill 100 and the extraction tank 200 to the dryer 300.
  • an extraction tank 200 and a dryer 300 are used to extract and dry the rolled foil, respectively.
  • the foil is immersed in an extractant to extract and remove the rolling oil on the surface.
  • the foil enters the dryer 300 to volatilize and remove the extractant remaining on the surface, thereby effectively ensuring the cleanliness of the foil surface and reducing the surface residual oil rate of the foil to below 0.1%, thereby achieving continuous and efficient removal of the rolling oil on the foil surface.
  • the foil rolling mill 100 includes a working roll, a support roll and a plurality of oil spray nozzles, the support roll is fixedly arranged, the working roll is movable, the thickness of the foil after rolling is controlled by the spacing between the support roll and the working roll, and the oil spray nozzle is used to spray rolling oil on the foil entering between the working roll and the support roll, and the foil sprayed with rolling oil enters the rolling area between the working roll and the support roll to roll the foil.
  • rolling oil is used to lubricate and cool the foil, and the thickness of the foil after rolling is about 13 to 15 ⁇ m, for example, it can be 13.0 ⁇ m, 13.2 ⁇ m, 13.4 ⁇ m, 13.6 ⁇ m, 13.8 ⁇ m, 14.0 ⁇ m, 14.2 ⁇ m, 14.4 ⁇ m, 14.6 ⁇ m, 14.8 ⁇ m or 15.0 ⁇ m.
  • a plurality of overflow plates 201 are provided in the extraction tank 200, and the height of the overflow plates 201 increases sequentially along the movement direction of the foil, and the plurality of overflow plates 201 separate the extraction tank 200 to form a plurality of extraction chambers.
  • a plurality of overflow plates 201 are provided in the extraction tank 200, and the overflow direction of the extractant is opposite to the movement direction of the foil by the different heights of the overflow plates 201, so as to realize multi-stage countercurrent extraction of the foil and improve the contact effect between the foil surface and the extractant.
  • the foil reciprocates in a serpentine manner in the extraction tank 200, thereby increasing the contact time between the foil and the extractant and effectively removing the rolling oil on the surface of the foil.
  • the extraction tank 200 is provided with an extractant outlet 204 on the foil input side of the extraction tank 200; the extraction tank 200 is provided with an extractant inlet 203 on the foil output side of the extraction tank 200, and the extractant enters from the extractant inlet 203, flows through each of the extraction chambers in sequence, and is discharged from the extractant outlet 204.
  • the extractant is added through the extractant inlet 203 to maintain the extractant concentration in each extraction chamber, and provide overflow flow power.
  • the rolling oil floats on the surface of the extractant liquid surface, so that the liquid layer containing the rolling oil on the surface can be discharged by overflow, effectively ensuring the extraction effect of the extraction tank 200.
  • a concentration detector (not shown) may be further provided in the extraction tank 200 to detect the concentration of rolling oil or the concentration of extractant in the extraction tank 200, thereby regulating the liquid inlet speed of the extractant according to the concentration detection in the extraction tank 200, thereby ensuring the stability of the extractant concentration in the extraction tank 200 in real time.
  • the mixture of rolling oil and extractant discharged from the extractant outlet 204 is connected to a separation device (not shown).
  • the separation device can be a fractionator, which separates the rolling oil and the extractant by distillation to achieve recycling of the rolling oil and the extractant.
  • At least one circulating cooler 202 is provided in the extraction tank 200.
  • each of the extraction chambers is provided with a circulating cooler 202, and the circulating cooler 202 is used to adjust the temperature of the extractant in the extraction chamber.
  • the circulating cooler 202 includes a circulating pipeline connected to the extraction chamber in a circulation manner, and the circulation management is provided with a circulating pump and a cooler.
  • the cooler can be a heat pipe heat exchanger.
  • the circulating pump drives the extractant in the extraction chamber to circulate, realize the internal circulation flow of the extractant, and ensure the uniformity of the extractant in the extraction chamber.
  • the extractant contacts the cooler during the circulation process to cool down, reduce the temperature of the extractant, and then reduce the evaporation of the extractant and the evaporation of water vapor, and reduce the condensation of water vapor.
  • the liquid sealing structure 400 includes a sealing plate covering the opening of the extraction tank 200. As shown in FIG3 , the sealing plate is provided with at least one exhaust port 401. The sealing plate is provided with a liquid storage tank 402 and a sealing cap 403 at each exhaust port 401. The liquid storage tank 402 is arranged around the exhaust port 401. The sealing cap 403 covers the exhaust port 401, and the edge of the sealing cap 403 is immersed below the liquid level of the liquid storage tank 402.
  • the sealing cap 403 is fixed on the sealing plate or the wall of the liquid storage tank 402 by means of a bracket. After the sealing cap 403 is extended into the liquid storage tank 402, a U-shaped groove structure is formed. After liquid is added into the liquid storage tank 402, a liquid sealing layer is formed to achieve a sealing effect, that is, the sealing is isolated and sealed by the liquid sealing layer and the side wall of the sealing cap 403.
  • the extraction tank 200 is externally connected to a positive pressure gas source 205, and the positive pressure gas source 205 is connected to the space above the liquid surface of the extraction tank 200, and the positive pressure gas source 205 is used to maintain the gas pressure in the extraction tank 200 greater than the ambient gas pressure.
  • the positive pressure gas source 205 can be a nitrogen gas source.
  • the foil conveyor includes an unwinding mechanism 500 , a rewinding mechanism 600 , a tension mechanism 800 , and a plurality of conveying rollers 700 .
  • the unwinding mechanism 500 is arranged at the input side of the foil rolling mill 100, and the winding mechanism 600 is arranged at the output side of the dryer 300.
  • the unwinding mechanism 500 includes an unwinding roller and an unwinding drive motor, the unwinding drive motor is used to drive the unwinding roller to rotate, so as to output the foil material wound on the unwinding roller, and the unwinding roller can adopt an air expansion shaft, for example, the unwinding speed is about 10-150m/min;
  • the winding mechanism 600 includes a winding roller and a winding drive motor, and the winding drive motor is used to drive the winding roller to rotate, so as to wind the foil material on the winding roller for collection.
  • the tension mechanism 800 includes at least one tension roller, and the tension roller is used to provide foil tension.
  • the tension mechanism 800 includes a first tension roller 801, a second tension roller 802 and a third tension roller 803, wherein the first tension roller 801 is disposed between the unwinding mechanism 500 and the foil rolling device 100, the second tension roller 802 is disposed between the foil rolling device 100 and the extraction tank 200, and the third tension roller 803 is disposed between the extraction tank 200 and the dryer 300.
  • three tension rollers are provided to form four tension control sections, so that precise control can be achieved during foil transmission.
  • the foil rolling and oil removal device also includes a tension detector (not shown) and a tension regulator (not shown).
  • the tension detector detects the tension of each tension roller respectively, so that the position of the tension roller is adjusted by the tension regulator to increase the tension of the foil and avoid the problem of wrinkling of the foil.
  • the tension detection of the tension roller can be achieved by detecting the surface pressure of the tension roller.
  • the tension regulator can be composed of a PLC controller and a driver, that is, the driver is connected to the tension roller for moving the position of the tension roller.
  • the PLC controller is electrically connected to the driver and the tension detector independently, so as to adjust the foil tension in real time through automatic control.
  • each extraction chamber is independently provided with a drain port, and the drain port is provided at the bottom of each extraction tank 200.
  • each drain port is connected to a drain pipe. The present application provides a drain port in each extraction chamber, so that rapid drainage can be achieved during the cleaning process.
  • the dryer 300 includes a shell, and a plurality of air nozzles 301 are disposed in the shell.
  • the air nozzles 301 are sequentially arranged along the moving direction of the foil, and the blowing direction of the air nozzles 301 is toward the foil.
  • an embodiment of the present application provides a rolling degreasing method for foil, wherein the rolling degreasing method adopts the foil rolling degreasing device as described in the first aspect, and the rolling degreasing method comprises the following steps:
  • the foil After the foil is rolled, it is sequentially extracted with an extractant and dried to remove the rolling oil on the surface of the foil.
  • countercurrent contact extraction is used during the extraction process, and the movement direction of the foil is opposite to the flow direction of the extractant.
  • the present application improves the contact effect between the foil and the extractant and improves the rolling oil removal effect by countercurrent contact between the foil and the extractant.
  • the extractant includes dichloromethane.
  • dichloromethane used as the extractant, which has high solubility in rolling oil and can remove rolling oil on the surface and in the gaps of the foil.
  • dichloromethane has a low boiling point and is easy to be dried and removed, thereby not affecting the surface properties of the foil.
  • dichloromethane and rolling oil can be separated by fractionation to achieve recycling of rolling oil and dichloromethane.
  • the extractant is cooled during the extraction process.
  • an inert atmosphere is used during the extraction process.
  • the inert atmosphere has a pressure greater than the ambient gas pressure.
  • the inert atmosphere gas includes nitrogen.
  • the drying process is performed at a temperature of about 60-100°C.
  • the present application provides a rolling degreasing method for the above-mentioned foil, comprising the following steps:
  • the foil After the foil is rolled, it enters the extraction tank 200 and passes through multiple extraction chambers in sequence for multi-stage extraction.
  • the flow direction of the extractant is opposite to the movement direction of the foil.
  • the extractant adopts overflow flow.
  • the foil After extraction, the foil enters the dryer 300 to dry and remove the extractant remaining on the surface of the foil.
  • the mixed liquid flowing out of the extraction tank 200 is recovered and processed.
  • the thickness of the foil after rolling is 13 ⁇ m
  • the rolling oil is CL-1# aluminum foil rolling oil
  • the length of the foil immersed in the extractant is 20 m
  • the type of the foil is aluminum foil
  • the unwinding speed is 50 m/min.
  • the present embodiment provides a foil rolling and oil removal device, comprising a foil rolling machine 100, an extraction tank 200 and a dryer 300 arranged in sequence along the moving direction of the foil, a liquid sealing structure 400 is arranged at the opening of the extraction tank 200, the extraction agent of the extraction tank 200 is dichloromethane, and the drying temperature of the dryer 300 is 80°C.
  • the liquid sealing structure 400 includes a sealing plate covering the opening of the extraction tank 200, wherein the sealing plate is provided with two exhaust ports 401, and each of the exhaust ports 401 is provided with a liquid storage tank 402 surrounding the exhaust ports 401 and a sealing cap 403, and the edge of the sealing cap 403 is immersed below the liquid level of the liquid storage tank 402.
  • the foil rolling and oil removal device further comprises a foil conveyor, which is used to convey the foil, and the foil reciprocates in a serpentine shape in the extraction tank 200 .
  • the foil material conveyor includes an unwinding mechanism 500, a rewinding mechanism 600, a tension mechanism 800 and a plurality of conveying rollers 700; the unwinding mechanism 500 is arranged at the feeding side of the foil rolling device 100, and the rewinding mechanism 600 is arranged at the discharging side of the dryer 300.
  • the tension rollers include a first tension roller 801, a second tension roller 802 and a third tension roller 803, wherein the first tension roller 801 is arranged between the unwinding mechanism 500 and the foil rolling device 100, the second tension roller 802 is arranged between the foil rolling device 100 and the extraction tank 200, and the third tension roller 803 is arranged between the extraction tank 200 and the dryer 300.
  • This embodiment provides a foil rolling oil removal device. Compared with Embodiment 1, the difference lies in that three overflow plates 201 are arranged in the extraction tank 200. The height of the overflow plates 201 increases successively along the movement direction of the foil. The overflow plates 201 divide the extraction tank 200 into four extraction chambers.
  • the extraction tank 200 is provided with an extractant outlet 204 on the foil input side of the extraction tank 200, and is provided with an extractant inlet 203 on the foil output side of the extraction tank 200.
  • the extractant enters from the extractant inlet 203, flows through each extraction chamber in sequence, and is discharged from the extractant outlet 204.
  • This embodiment provides a foil rolling oil removal device. Compared with Example 2, the difference is that the extraction chamber is provided with a circulating cooler 202, and the circulating cooler 202 includes a circulating pipeline circulatedly connected to the extraction chamber.
  • the circulation management is provided with a circulating pump and a cooler, and the temperature of the cooler is 25°C.
  • This embodiment provides a foil rolling oil removal device. Compared with Embodiment 1, the difference lies in that a positive pressure gas source 205 is connected above the liquid surface in the extraction tank 200, the positive pressure gas source 205 is nitrogen, and the gas pressure in the extraction tank 200 is greater than the ambient gas pressure of 200Pa.
  • the present embodiment provides a foil rolling and oil removal device, comprising a foil rolling device 100, an extraction tank 200 and a dryer 300 which are sequentially arranged along the moving direction of the foil, wherein the extraction tank 200 is injected with dichloromethane.
  • a liquid sealing structure 400 is provided at the opening of the extraction tank 200, and the liquid sealing structure 400 includes a sealing plate covering the opening of the extraction tank 200, and the sealing plate is provided with two exhaust ports 401, and the exhaust ports 401 are each provided with a liquid storage tank 402 surrounding the exhaust ports 401 and a sealing cap 403, and the edge of the sealing cap 403 is immersed below the liquid level of the liquid storage tank 402.
  • the overflow plates 201 divide the extraction tank 200 into four extraction chambers, which are located on the foil input side of the extraction tank 200.
  • the extraction tank 200 is provided with an extractant outlet 204, which is located on the foil output side of the extraction tank 200.
  • the extraction tank 200 is provided with an extractant inlet 203.
  • the extractant enters from the extractant inlet 203 and flows through each extraction chamber in sequence, and is discharged from the extractant outlet 204.
  • the extraction chambers are all provided with circulating coolers 202, and the temperature of the circulating coolers 202 is 25°C.
  • the extraction chambers are all independently provided with drain ports, and the drain ports are all arranged at the bottom of the extraction tank 200.
  • a positive pressure gas source 205 is connected above the liquid level in the extraction tank 200, and the positive pressure gas source 205 is used to maintain the gas pressure in the extraction tank 200 greater than the ambient gas pressure of 200 Pa.
  • the dryer 300 includes a shell and 20 air nozzles 301 arranged in the shell, and the air nozzles 301 are arranged in sequence along the moving direction of the foil. The temperature of the dryer 300 is 80°C.
  • the foil rolling and oil removal device further includes a foil conveyor, which includes an unwinding mechanism 500, a rewinding mechanism 600, a tension mechanism 800 and a plurality of conveying rollers 700; the unwinding mechanism 500 is arranged at the feeding side of the foil rolling machine 100, and the rewinding mechanism 600 is arranged at the discharging side of the dryer 300.
  • the tension rollers include a first tension roller 801, a second tension roller 802 and a third tension roller 803, wherein the first tension roller 801 is arranged between the unwinding mechanism 500 and the foil rolling machine 100, the second tension roller 802 is arranged between the foil rolling machine 100 and the extraction tank 200, and the third tension roller 803 is arranged between the extraction tank 200 and the dryer 300.
  • This comparative example provides a foil rolling oil removal device, which is different from Example 1 in that the extraction tank 200 and the dryer 300 are replaced by a high-temperature steam purging device, the purging foil length is 1 m, and the temperature of the high-temperature steam is 110°C.
  • the surface residual oil rate of the foil after degreasing in the above embodiment and comparative example was tested, and the test results are shown in Table 1.
  • the detection method includes:
  • Example 1 The Surface residual oil rate Example 1 0.10% Example 2 0.07% Example 3 0.06% Example 4 0.08% Example 5 0.05% Comparative Example 1 4.00%
  • Example 2 It can be seen from Example 2 that in the present application, a plurality of overflow plates 201 are arranged in the extraction tank 200, and by means of the different heights of the overflow plates 201, the overflow direction of the extractant is opposite to the movement direction of the foil, thereby realizing multi-stage countercurrent extraction of the foil, improving the contact effect between the foil surface and the extractant, and after extraction, the rolling oil floats on the surface of the extractant liquid, so that the liquid layer containing the rolling oil on the surface can be discharged by overflow, thereby effectively ensuring the extraction effect of the extraction tank 200.
  • Example 3 It can be seen from Example 3 that the present application realizes internal circulation flow of the extractant by circulating and cooling the extractant, thereby ensuring the uniformity of the extractant in the extraction chamber, improving the turbulent flow of the extractant, and ensuring the contact disturbance between the extractant and the foil, thereby improving the extraction effect. Furthermore, the extractant is cooled by contact with the cooler during the circulation process, thereby lowering the temperature of the extractant, reducing the evaporation of the extractant and the evaporation of water vapor, and thus reducing the condensation of water vapor.
  • Example 4 it can be seen from Example 4 that in the present application, by introducing gas into the extraction tank 200, a slightly positive pressure state is formed in the extraction tank 200, which effectively prevents water vapor in the ambient gas from entering the extraction tank 200, reduces water vapor condensation, and reduces the volatilization of the extractant by means of slightly positive pressure.
  • the present application extracts and dries the rolled foil to achieve continuous and efficient removal of rolling oil on the foil surface.
  • the temperature of the foil increases after rolling, and after entering the extraction tank 200, it comes into contact with the extractant to effectively remove the surface rolling oil.
  • the liquid seal structure 400 is used to reduce the volatilization of the extractant and the generation of condensed water, thereby preventing condensed water from dripping onto the foil surface and affecting the surface performance of the foil.
  • the oil content can be reduced to below 0.1%.

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Abstract

A foil-rolling oil removal device, comprising a foil roller (100), an extraction tank (200), and a dryer (300), which are sequentially arranged in a foil movement direction, wherein the extraction tank is configured to hold an extraction agent; a liquid seal structure is provided at an opening of the extraction tank; the foil roller is configured to roll a foil; and the dryer is configured to dry the foil. The foil-rolling oil removal device further comprises a foil conveyor configured to convey the foil from the foil roller, through the extraction tank to the dryer. Also provided is a rolling oil removal method using the foil-rolling oil removal device. The device removes oil from the foil by way of extraction, and the extraction tank is sealed by means of the liquid seal structure, thereby reducing volatilization of the extraction agent and reducing the impact of condensed water on the surface performance of the foil.

Description

箔材轧制除油装置以及轧制除油方法Foil rolling degreasing device and rolling degreasing method 技术领域Technical Field
本申请涉及箔材制备技术领域，尤其涉及一种箔材轧制除油装置以及轧制除油方法。The present application relates to the technical field of foil material preparation, and in particular to a foil material rolling degreasing device and a foil material rolling degreasing method.
背景技术Background technique
传统铝箔箔材的制作过程中，存在多道轧制减薄步骤，而在轧制过程中必不可少的需要加入轧制油，轧制油的主要作用是润滑、冷却、洗涤和防止氧化，但是轧制油的使用后，箔材存在以下问题：1、生产出来的箔材表面残留轧制油，造成表面极性降低和达因值不均匀；2、箔材涂覆造成漏涂、剥离差，目前主要通过涂布的技术把活性材料等导电材料涂覆在电池箔上，表面轧制油的残留会造成漏涂、剥离力减弱等问题；3、箔材的表面润湿张力与箔材表面附油量直接相关，完全除油干净的铝箔表面张力在72达因以上，粗轧后的铝箔表面张力在31达因左右，精轧后的铝箔表面张力在32达因左右，如果除油不彻底，箔材产品就会出现油粘、起泡、起线条、油斑等缺陷；上述问题严重影响箔材后续的涂布使用。In the production process of traditional aluminum foil, there are multiple rolling and thinning steps, and rolling oil must be added during the rolling process. The main functions of rolling oil are lubrication, cooling, washing and oxidation prevention. However, after the use of rolling oil, the foil has the following problems: 1. Rolling oil remains on the surface of the produced foil, resulting in reduced surface polarity and uneven dyne value; 2. Foil coating causes missing coating and poor peeling. At present, conductive materials such as active materials are mainly coated on battery foil through coating technology. The residual rolling oil on the surface will cause problems such as missing coating and weakened peeling force; 3. The surface wetting tension of the foil is directly related to the amount of oil attached to the foil surface. The surface tension of completely degreased aluminum foil is above 72 dynes, the surface tension of aluminum foil after rough rolling is about 31 dynes, and the surface tension of aluminum foil after fine rolling is about 32 dynes. If the oil is not thoroughly removed, the foil product will have defects such as oil stickiness, blistering, lines, and oil spots; the above problems seriously affect the subsequent coating and use of the foil.
发明内容Summary of the invention
根据本申请的各种实施例，提供一种箔材轧制除油装置，包括：According to various embodiments of the present application, a foil rolling degreasing device is provided, comprising:
箔轧器，用于对箔材进行轧制；A foil rolling mill, used for rolling foil;
萃取槽，所述萃取槽内注入有萃取剂，所述萃取槽的开口处设置有液封结构，所述萃取槽对所述箔轧器输出的箔材进行萃取除油；An extraction tank, in which an extractant is injected, a liquid sealing structure is provided at the opening of the extraction tank, and the extraction tank extracts and removes oil from the foil output by the foil rolling machine;
烘干器，所述烘干器用于对所述萃取槽输出的箔材进行烘干；以及A dryer, the dryer being used to dry the foil outputted from the extraction tank; and
箔材传输器，用于由所述箔轧器、所述萃取槽至所述烘干器传输箔材。A foil conveyor is used to convey the foil from the foil rolling machine, the extraction tank to the dryer.
在一些实施方式中，所述萃取槽内设置有多个溢流板，所述溢流板的高度沿箔材的运动方向依次升高，多个所述溢流板分隔所述萃取槽形成多个萃取腔。In some embodiments, a plurality of overflow plates are disposed in the extraction tank, and the heights of the overflow plates are sequentially increased along the moving direction of the foil, and the plurality of overflow plates divide the extraction tank into a plurality of extraction chambers.
在一些实施方式中，位于所述萃取槽的箔材输入一侧，所述萃取槽设置有萃取剂出口；位于所述萃取槽的箔材输出一侧，所述萃取槽设置有萃取剂进口，所述萃取剂由所述萃取剂进口进入依次流经各个所述萃取腔，并由所述萃取剂出口排出。In some embodiments, the extraction tank is provided with an extractant outlet on the foil input side of the extraction tank; and the extraction tank is provided with an extractant inlet on the foil output side of the extraction tank. The extractant enters from the extractant inlet, flows through each of the extraction chambers in sequence, and is discharged from the extractant outlet.
在一些实施方式中，所述萃取槽内设置有至少一个循环冷却器。In some embodiments, at least one circulating cooler is disposed in the extraction tank.
在一些实施方式中，各个所述萃取腔内均设置有所述循环冷却器，所述循环冷却器用 于调节所述萃取腔内的萃取剂温度。In some embodiments, each of the extraction chambers is provided with a circulating cooler, and the circulating cooler is used to adjust the temperature of the extractant in the extraction chamber.
在一些实施方式中，所述液封结构包括盖设于所述萃取槽开口处的密封板，所述密封板设置有至少一个排气口，所述密封板位于各个所述排气口处均设置储液槽以及密封帽，所述储液槽环绕设置于所述排气口的周向；所述密封帽盖设于所述排气口处，并且所述密封帽的边缘浸入所述储液槽的液面以下。In some embodiments, the liquid sealing structure includes a sealing plate covering the opening of the extraction tank, the sealing plate being provided with at least one exhaust port, and the sealing plate being provided with a liquid storage tank and a sealing cap at each exhaust port, the liquid storage tank being arranged around the circumference of the exhaust port; the sealing cap is covered at the exhaust port, and the edge of the sealing cap is immersed below the liquid level of the liquid storage tank.
在一些实施方式中，所述萃取槽外接有正压气源，所述正压气源接入所述萃取槽的液面上方空间，所述正压气源用于维持所述萃取槽内气体压力大于环境气体压力。In some embodiments, the extraction tank is externally connected to a positive pressure gas source, the positive pressure gas source is connected to the space above the liquid surface of the extraction tank, and the positive pressure gas source is used to maintain the gas pressure in the extraction tank greater than the ambient gas pressure.
在一些实施方式中，所述箔材传输器包括放卷机构、收卷机构、张力机构以及多个传输辊。In some embodiments, the foil conveyor includes an unwinding mechanism, a rewinding mechanism, a tension mechanism, and a plurality of conveying rollers.
所述放卷机构设置于所述箔轧器的输入侧，所述收卷机构设置于所述烘干器的输出侧。The unwinding mechanism is arranged at the input side of the foil rolling machine, and the winding mechanism is arranged at the output side of the dryer.
在一些实施方式中，所述张力机构包括至少一个张力辊，所述张力辊用于提供箔材张力。In some embodiments, the tension mechanism comprises at least one tension roller, and the tension roller is used to provide tension to the foil.
在一些实施方式中，所述张力机构包括第一张力辊、第二张力辊和第三张力辊，所述第一张力辊设置于所述放卷机构与所述箔轧器之间，所述第二张力辊设置于所述箔轧器与所述萃取槽之间，所述第三张力辊设置于所述萃取槽与所述烘干器之间。In some embodiments, the tension mechanism includes a first tension roller, a second tension roller and a third tension roller, the first tension roller is arranged between the unwinding mechanism and the foil roll, the second tension roller is arranged between the foil roll and the extraction tank, and the third tension roller is arranged between the extraction tank and the dryer.
在一些实施方式中，各个所述萃取腔均独立设置有排液口，所述排液口均设置于各个所述萃取槽的底部。In some embodiments, each of the extraction chambers is independently provided with a liquid drain port, and the liquid drain port is provided at the bottom of each of the extraction tanks.
在一些实施方式中，所述烘干器包括壳体，所述壳体内设置有多个风嘴，所述风嘴沿箔材的运动方向依次设置，所述风嘴的吹出方向朝向所述箔材。In some embodiments, the dryer includes a shell, and a plurality of air nozzles are disposed in the shell. The air nozzles are sequentially arranged along the moving direction of the foil, and the blowing direction of the air nozzles is toward the foil.
根据本申请的各种实施例，本申请提供了一种箔材的轧制除油方法，所述轧制除油方法采用上述的箔材轧制除油装置，所述轧制除油方法包括以下步骤：According to various embodiments of the present application, the present application provides a rolling degreasing method for foil, wherein the rolling degreasing method adopts the above-mentioned foil rolling degreasing device, and the rolling degreasing method comprises the following steps:
将箔材进行轧制后，依次采用萃取剂萃取和烘干处理，从而去除箔材表面的轧制油。After the foil is rolled, it is sequentially extracted with an extractant and dried to remove the rolling oil on the surface of the foil.
在一些实施方式中，所述萃取的过程中采用逆流接触萃取，所述箔材的运动方向与萃取剂的流动方向相反。In some embodiments, countercurrent contact extraction is used during the extraction process, and the movement direction of the foil is opposite to the flow direction of the extractant.
在一些实施方式中，所述萃取剂包括二氯甲烷。In some embodiments, the extractant comprises dichloromethane.
在一些实施方式中，所述萃取的过程中对萃取剂进行冷却处理。In some embodiments, the extractant is cooled during the extraction process.
在一些实施方式中，所述萃取的过程中采用惰性气氛。In some embodiments, an inert atmosphere is used during the extraction process.
在一些实施方式中，所述惰性气氛的压力大于环境气体压力。In some embodiments, the inert atmosphere has a pressure greater than the ambient gas pressure.
在一些实施方式中，所述惰性气氛的气体包括氮气。In some embodiments, the gas of the inert atmosphere includes nitrogen.
在一些实施方式中，所述烘干处理的温度为约60～100℃，例如为60℃、65℃、70℃、75℃、80℃、85℃、90℃、95℃或100℃。In some embodiments, the drying temperature is about 60-100°C, for example, 60°C, 65°C, 70°C, 75°C, 80°C, 85°C, 90°C, 95°C or 100°C.
本申请具有以下有益效果：This application has the following beneficial effects:
本申请对轧制后的箔材进行萃取和烘干处理，实现连续、高效地去除箔材表面轧制油，此外箔材经轧制后温度升高，与萃取剂接触过程中有效去除表面轧制油，而且采用液封结构减少了萃取剂的挥发，并减少冷凝水的产生，避免冷凝水滴落至箔材表面，影响箔材表面性能，含油率能够下降至0.1％以下。The present application extracts and dries the rolled foil to achieve continuous and efficient removal of rolling oil on the foil surface. In addition, the temperature of the foil increases after rolling, and the surface rolling oil is effectively removed during contact with the extractant. The liquid seal structure is used to reduce the volatilization of the extractant and the generation of condensed water, thereby preventing condensed water from dripping onto the foil surface and affecting the surface performance of the foil. The oil content can be reduced to below 0.1%.
附图说明BRIEF DESCRIPTION OF THE DRAWINGS
为了更清楚地说明本申请实施例中的技术方案，下面将对实施例描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图仅仅是本申请的实施例，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据公开的附图获得其他的附图。In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are merely embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the disclosed drawings without paying any creative work.
图1为本申请一些实施例中提供的箔材轧制除油装置的结构示意图。FIG1 is a schematic diagram of the structure of a foil rolling oil removal device provided in some embodiments of the present application.
图2为本申请一个实施方式中提供的萃取槽的内部结构图。FIG. 2 is a diagram showing the internal structure of an extraction tank provided in one embodiment of the present application.
图3为本申请一个实施方式中提供的液封结构位于排气口处的截面图。FIG3 is a cross-sectional view of a liquid sealing structure provided in one embodiment of the present application at an exhaust port.
其中，100-箔轧器；200-萃取槽；201-溢流板；202-循环冷却器；203-萃取剂进口；204-萃取剂出口；205-正压气源；300-烘干器；301-风嘴；400-液封结构；401-排气口；402-储液槽；403-密封帽；500-放卷机构；600-收卷机构；700-传输辊；800-张力机构；801-第一张力辊；802-第二张力辊；803-第三张力辊。Among them, 100-foil rolling machine; 200-extraction tank; 201-overflow plate; 202-circulating cooler; 203-extraction agent inlet; 204-extraction agent outlet; 205-positive pressure air source; 300-dryer; 301-air nozzle; 400-liquid sealing structure; 401-exhaust port; 402-liquid storage tank; 403-sealing cap; 500-unwinding mechanism; 600-winding mechanism; 700-transmission roller; 800-tension mechanism; 801-first tension roller; 802-second tension roller; 803-third tension roller.
具体实施方式Detailed ways
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。基于本申请中的实施例，本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例，都属于本申请保护的范围。The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.
此外，术语“第一”、“第二”仅用于描述目的，而不能理解为指示或暗示相对重要性或者隐含指明所指示的技术特征的数量。由此，限定有“第一”、“第二”的特征可以明示或者隐含地包括至少一个该特征。在本申请的描述中，“多个”的含义是至少两个，例如两个，三个等，除非另有明确具体的限定。In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of this application, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.
需要说明的是，当元件被称为“固定于”或“设置于”另一个元件，它可以直接在另一个元件上或者也可以存在居中的元件。当一个元件被认为是“连接”另一个元件，它可以是直接连接到另一个元件或者可能同时存在居中元件。本文所使用的术语“垂直的”、“水 平的”、“上”、“下”、“左”、“右”以及类似的表述只是为了说明的目的，并不表示是唯一的实施方式。It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.
第一方面，本申请实施方式提供了一种箔材轧制除油装置，如图1所示，包括：In a first aspect, an embodiment of the present application provides a foil rolling oil removal device, as shown in FIG1 , comprising:
箔轧器100，用于对箔材进行轧制；A foil rolling machine 100, used for rolling foil;
萃取槽200，所述萃取槽200内注入有萃取剂，所述萃取槽200的开口处设置有液封结构400，所述萃取槽200对所述箔轧器100输出的箔材进行萃取除油；An extraction tank 200, wherein an extractant is injected into the extraction tank 200, and a liquid sealing structure 400 is provided at the opening of the extraction tank 200, and the extraction tank 200 extracts and removes oil from the foil output by the foil rolling machine 100;
烘干器300，所述烘干器300用于对所述萃取槽200输出的箔材进行烘干；以及A dryer 300, the dryer 300 is used to dry the foil output from the extraction tank 200; and
箔材传输器，用于由所述箔轧器100、萃取槽200至烘干器300传输箔材。The foil conveyor is used to convey the foil from the foil rolling mill 100 and the extraction tank 200 to the dryer 300.
本申请中采用萃取槽200和烘干器300分别对轧制后的箔材进行萃取处理和烘干处理，萃取过程中箔材在萃取剂内浸润萃取去除表面轧制油，萃取后箔材进入烘干器300，将表面残留的萃取剂挥发去除，从而有效保证箔材表面的洁净度，使箔材的表面残油率降至0.1％以下，实现连续、高效去除箔材表面轧制油。In the present application, an extraction tank 200 and a dryer 300 are used to extract and dry the rolled foil, respectively. During the extraction process, the foil is immersed in an extractant to extract and remove the rolling oil on the surface. After the extraction, the foil enters the dryer 300 to volatilize and remove the extractant remaining on the surface, thereby effectively ensuring the cleanliness of the foil surface and reducing the surface residual oil rate of the foil to below 0.1%, thereby achieving continuous and efficient removal of the rolling oil on the foil surface.
在一些实施例中，箔轧器100包括工作辊、支撑辊和多个喷油嘴，支撑辊固定设置，工作辊活动设置，通过支撑辊和工作辊之间的间距控制轧制后箔材的厚度，喷油嘴用于对进入工作辊和支撑辊之间的箔材喷淋轧制油，经喷淋轧制油的箔材进入工作辊与支撑辊之间的轧制区域进行轧制箔材。本申请实施例中采用轧制油对箔材进行润滑和冷却，轧制后箔材的厚度为约13～15μm，例如可以是13.0μm、13.2μm、13.4μm、13.6μm、13.8μm、14.0μm、14.2μm、14.4μm、14.6μm、14.8μm或15.0μm。In some embodiments, the foil rolling mill 100 includes a working roll, a support roll and a plurality of oil spray nozzles, the support roll is fixedly arranged, the working roll is movable, the thickness of the foil after rolling is controlled by the spacing between the support roll and the working roll, and the oil spray nozzle is used to spray rolling oil on the foil entering between the working roll and the support roll, and the foil sprayed with rolling oil enters the rolling area between the working roll and the support roll to roll the foil. In the embodiment of the present application, rolling oil is used to lubricate and cool the foil, and the thickness of the foil after rolling is about 13 to 15 μm, for example, it can be 13.0 μm, 13.2 μm, 13.4 μm, 13.6 μm, 13.8 μm, 14.0 μm, 14.2 μm, 14.4 μm, 14.6 μm, 14.8 μm or 15.0 μm.
在一些实施例中，如图2所示，所述萃取槽200内设置有多个溢流板201，所述溢流板201的高度沿箔材的运动方向依次升高，所述多个溢流板201分隔所述萃取槽200形成多个萃取腔。本申请中在萃取槽200内设置多个溢流板201，并且通过溢流板201高度的不同，使萃取剂的溢流方向与箔材的运动方向相反，实现箔材的多级逆流萃取，提高箔材表面与萃取剂的接触效果。In some embodiments, as shown in FIG2 , a plurality of overflow plates 201 are provided in the extraction tank 200, and the height of the overflow plates 201 increases sequentially along the movement direction of the foil, and the plurality of overflow plates 201 separate the extraction tank 200 to form a plurality of extraction chambers. In the present application, a plurality of overflow plates 201 are provided in the extraction tank 200, and the overflow direction of the extractant is opposite to the movement direction of the foil by the different heights of the overflow plates 201, so as to realize multi-stage countercurrent extraction of the foil and improve the contact effect between the foil surface and the extractant.
在一些实施例中，箔材在萃取槽200内呈蛇形往复运动，从而提高箔材与萃取剂的接触时间，有效去除箔材表面的轧制油。In some embodiments, the foil reciprocates in a serpentine manner in the extraction tank 200, thereby increasing the contact time between the foil and the extractant and effectively removing the rolling oil on the surface of the foil.
在一些实施例中，位于所述萃取槽200的箔材输入一侧，所述萃取槽200设置有萃取剂出口204；位于所述萃取槽200的箔材输出一侧，所述萃取槽200设置有萃取剂进口203，所述萃取剂由所述萃取剂进口203进入依次流经各个所述萃取腔，并由所述萃取剂出口204排出。本申请中通过萃取剂进口203加入萃取剂，维持各个萃取腔内萃取剂浓度，并提供溢流流动动力，萃取后轧制油漂浮在萃取剂液面的表面，从而通过溢流的方式能够将表面含轧制油的液层排出，有效保证萃取槽200的萃取效果。In some embodiments, the extraction tank 200 is provided with an extractant outlet 204 on the foil input side of the extraction tank 200; the extraction tank 200 is provided with an extractant inlet 203 on the foil output side of the extraction tank 200, and the extractant enters from the extractant inlet 203, flows through each of the extraction chambers in sequence, and is discharged from the extractant outlet 204. In the present application, the extractant is added through the extractant inlet 203 to maintain the extractant concentration in each extraction chamber, and provide overflow flow power. After extraction, the rolling oil floats on the surface of the extractant liquid surface, so that the liquid layer containing the rolling oil on the surface can be discharged by overflow, effectively ensuring the extraction effect of the extraction tank 200.
在一些实施例中，本申请中还可以在萃取槽200内增设浓度检测器(未示出)，对萃取槽200内的轧制油浓度或萃取剂浓度进行检测，从而根据萃取槽200内浓度检测，调控萃取剂的进液速度，实时保证萃取槽200内的萃取剂浓度稳定。In some embodiments, in the present application, a concentration detector (not shown) may be further provided in the extraction tank 200 to detect the concentration of rolling oil or the concentration of extractant in the extraction tank 200, thereby regulating the liquid inlet speed of the extractant according to the concentration detection in the extraction tank 200, thereby ensuring the stability of the extractant concentration in the extraction tank 200 in real time.
在一些实施例中，所述萃取剂出口204排出的轧制油和萃取剂的混合物接入分离装置(未示出)，例如分离装置可以是分馏器，通过分馏的方式将轧制油和萃取剂分离，实现轧制油和萃取剂的循环利用。In some embodiments, the mixture of rolling oil and extractant discharged from the extractant outlet 204 is connected to a separation device (not shown). For example, the separation device can be a fractionator, which separates the rolling oil and the extractant by distillation to achieve recycling of the rolling oil and the extractant.
在一些实施例中，所述萃取槽200内设置有至少一个循环冷却器202。可选地，各个所述萃取腔内均设置有循环冷却器202，所述循环冷却器202用于调节所述萃取腔内的萃取剂温度。例如，循环冷却器202包括与萃取腔循环连接的循环管路，所述循环管理上设置有循环泵以及冷却器，冷却器可以是采用热管换热器，循环泵驱动萃取腔内的萃取剂循环流动，实现萃取剂的内循环流动，保证萃取腔内的萃取剂均一性，进一步地，萃取剂在循环流动过程中与冷却器接触降温，降低萃取剂温度，进而减少萃取剂蒸发以及水汽蒸发，并减少水汽凝结。In some embodiments, at least one circulating cooler 202 is provided in the extraction tank 200. Optionally, each of the extraction chambers is provided with a circulating cooler 202, and the circulating cooler 202 is used to adjust the temperature of the extractant in the extraction chamber. For example, the circulating cooler 202 includes a circulating pipeline connected to the extraction chamber in a circulation manner, and the circulation management is provided with a circulating pump and a cooler. The cooler can be a heat pipe heat exchanger. The circulating pump drives the extractant in the extraction chamber to circulate, realize the internal circulation flow of the extractant, and ensure the uniformity of the extractant in the extraction chamber. Furthermore, the extractant contacts the cooler during the circulation process to cool down, reduce the temperature of the extractant, and then reduce the evaporation of the extractant and the evaporation of water vapor, and reduce the condensation of water vapor.
在一些实施例中，所述液封结构400包括盖设于所述萃取槽200开口处的密封板，如图3所示，所述密封板设置有至少一个排气口401，所述密封板位于各个所述排气口401处均设置储液槽402以及密封帽403，所述储液槽402环绕设置于所述排气口401的周向；所述密封帽403盖设于所述排气口401处，并且所述密封帽403的边缘浸入所述储液槽402的液面以下。In some embodiments, the liquid sealing structure 400 includes a sealing plate covering the opening of the extraction tank 200. As shown in FIG3 , the sealing plate is provided with at least one exhaust port 401. The sealing plate is provided with a liquid storage tank 402 and a sealing cap 403 at each exhaust port 401. The liquid storage tank 402 is arranged around the exhaust port 401. The sealing cap 403 covers the exhaust port 401, and the edge of the sealing cap 403 is immersed below the liquid level of the liquid storage tank 402.
在一些实施例中，密封帽403采用支架的方式固定在密封板上或储液槽402的壁面上，密封帽403伸入储液槽402后，形成U形槽结构，在储液槽402内加入液体后，形成液封层，实现密封效果，即由液封层以及密封帽403的侧壁隔绝密封。In some embodiments, the sealing cap 403 is fixed on the sealing plate or the wall of the liquid storage tank 402 by means of a bracket. After the sealing cap 403 is extended into the liquid storage tank 402, a U-shaped groove structure is formed. After liquid is added into the liquid storage tank 402, a liquid sealing layer is formed to achieve a sealing effect, that is, the sealing is isolated and sealed by the liquid sealing layer and the side wall of the sealing cap 403.
在一些实施例中，所述萃取槽200外接有正压气源205，所述正压气源205接入所述萃取槽200的液面上方空间，所述正压气源205用于维持所述萃取槽200内气体压力大于环境气体压力。正压气源205可选为氮气气源。本申请中通过向萃取槽200内通入气体，从而使萃取槽200内形成微正压状态，有效避免环境气体中水汽进入萃取槽200，减少水汽凝结，而且通过微正压的方式，降低了萃取剂的挥发。In some embodiments, the extraction tank 200 is externally connected to a positive pressure gas source 205, and the positive pressure gas source 205 is connected to the space above the liquid surface of the extraction tank 200, and the positive pressure gas source 205 is used to maintain the gas pressure in the extraction tank 200 greater than the ambient gas pressure. The positive pressure gas source 205 can be a nitrogen gas source. In the present application, by introducing gas into the extraction tank 200, a slightly positive pressure state is formed in the extraction tank 200, which effectively prevents water vapor in the ambient gas from entering the extraction tank 200, reduces water vapor condensation, and reduces the volatilization of the extractant by means of a slightly positive pressure.
在一些实施例中，所述箔材传输器包括放卷机构500、收卷机构600、张力机构800以及多个传输辊700。In some embodiments, the foil conveyor includes an unwinding mechanism 500 , a rewinding mechanism 600 , a tension mechanism 800 , and a plurality of conveying rollers 700 .
所述放卷机构500设置于所述箔轧器100的输入侧，所述收卷机构600设置于所述烘干器300的输出侧。例如，放卷机构500包括放卷辊和放卷驱动电机，放卷驱动电机用于驱动放卷辊转动，从而将卷绕于放卷辊上的箔材输出，放卷辊可以采用气涨轴，例如放卷 速度为约10～150m/min；收卷机构600包括收卷辊和收卷驱动电机，收卷驱动电机用于驱动收卷辊转动，从而将箔材卷绕于收卷辊上收集。The unwinding mechanism 500 is arranged at the input side of the foil rolling mill 100, and the winding mechanism 600 is arranged at the output side of the dryer 300. For example, the unwinding mechanism 500 includes an unwinding roller and an unwinding drive motor, the unwinding drive motor is used to drive the unwinding roller to rotate, so as to output the foil material wound on the unwinding roller, and the unwinding roller can adopt an air expansion shaft, for example, the unwinding speed is about 10-150m/min; the winding mechanism 600 includes a winding roller and a winding drive motor, and the winding drive motor is used to drive the winding roller to rotate, so as to wind the foil material on the winding roller for collection.
在一些实施例中，所述张力机构800包括至少一个张力辊，所述张力辊用于提供箔材张力。In some embodiments, the tension mechanism 800 includes at least one tension roller, and the tension roller is used to provide foil tension.
在一些实施例中，所述张力机构800包括第一张力辊801、第二张力辊802和第三张力辊803，所述第一张力辊801设置于所述放卷机构500与所述箔轧器100之间，所述第二张力辊802设置于所述箔轧器100与所述萃取槽200之间，所述第三张力辊803设置于所述萃取槽200与所述烘干器300之间。本申请中通过设置三个张力辊，形成四个张力控制段，能够在箔材传输时实现精准调控。In some embodiments, the tension mechanism 800 includes a first tension roller 801, a second tension roller 802 and a third tension roller 803, wherein the first tension roller 801 is disposed between the unwinding mechanism 500 and the foil rolling device 100, the second tension roller 802 is disposed between the foil rolling device 100 and the extraction tank 200, and the third tension roller 803 is disposed between the extraction tank 200 and the dryer 300. In the present application, three tension rollers are provided to form four tension control sections, so that precise control can be achieved during foil transmission.
在一些实施例中，所述箔材轧制除油装置还包括张力检测器(未示出)和张力调控器(未示出)，张力检测器分别检测各个张力辊的张力检测，从而通过张力调控器对张力辊的位置进行调整，提高箔材的张力，避免箔材打皱的问题发生，例如，张力辊的张力检测可以是通过对张力辊的表面压力进行检测，张力调控器可以是PLC控制器与驱动器组成，即驱动器与张力辊连接，用于移动张力辊的位置，PLC控制器分别独立电性连接驱动器和张力检测器，从而通过自动控制实时调整箔材张力。In some embodiments, the foil rolling and oil removal device also includes a tension detector (not shown) and a tension regulator (not shown). The tension detector detects the tension of each tension roller respectively, so that the position of the tension roller is adjusted by the tension regulator to increase the tension of the foil and avoid the problem of wrinkling of the foil. For example, the tension detection of the tension roller can be achieved by detecting the surface pressure of the tension roller. The tension regulator can be composed of a PLC controller and a driver, that is, the driver is connected to the tension roller for moving the position of the tension roller. The PLC controller is electrically connected to the driver and the tension detector independently, so as to adjust the foil tension in real time through automatic control.
在一些实施例中，各个所述萃取腔均独立设置有排液口，所述排液口均设置于各个所述萃取槽200的底部。例如，各个排液口汇至排液主管。本申请通过在每个萃取腔内设置排液口，从而在清洗过程中能够实现快速排液。In some embodiments, each extraction chamber is independently provided with a drain port, and the drain port is provided at the bottom of each extraction tank 200. For example, each drain port is connected to a drain pipe. The present application provides a drain port in each extraction chamber, so that rapid drainage can be achieved during the cleaning process.
在一些实施例中，所述烘干器300包括壳体，所述壳体内设置有多个风嘴301，所述风嘴301沿箔材的运动方向依次设置，所述风嘴301的吹出方向朝向所述箔材。In some embodiments, the dryer 300 includes a shell, and a plurality of air nozzles 301 are disposed in the shell. The air nozzles 301 are sequentially arranged along the moving direction of the foil, and the blowing direction of the air nozzles 301 is toward the foil.
第二方面，本申请实施方式提供了一种箔材的轧制除油方法，所述轧制除油方法采用如第一方面所述的箔材轧制除油装置，所述轧制除油方法包括以下步骤：In a second aspect, an embodiment of the present application provides a rolling degreasing method for foil, wherein the rolling degreasing method adopts the foil rolling degreasing device as described in the first aspect, and the rolling degreasing method comprises the following steps:
将箔材进行轧制后，依次采用萃取剂萃取和烘干处理，从而去除箔材表面的轧制油。After the foil is rolled, it is sequentially extracted with an extractant and dried to remove the rolling oil on the surface of the foil.
在一些实施例中，所述萃取的过程中采用逆流接触萃取，所述箔材的运动方向与萃取剂的流动方向相反。本申请通过箔材与萃取剂逆流接触，从而提高箔材与萃取剂的接触效果，提高轧制油去除效果。In some embodiments, countercurrent contact extraction is used during the extraction process, and the movement direction of the foil is opposite to the flow direction of the extractant. The present application improves the contact effect between the foil and the extractant and improves the rolling oil removal effect by countercurrent contact between the foil and the extractant.
在一些实施例中，所述萃取剂包括二氯甲烷。本申请采用二氯甲烷作为萃取剂，对轧制油具有高溶解性，能够去除箔材表面以及空隙中的轧制油，而且二氯甲烷的沸点低，易于烘干去除，从而不影响箔材的表面性能，此外，二氯甲烷和轧制油能够通过分馏的方式分离，实现轧制油和二氯甲烷的循环利用。In some embodiments, the extractant includes dichloromethane. The present application uses dichloromethane as the extractant, which has high solubility in rolling oil and can remove rolling oil on the surface and in the gaps of the foil. Moreover, dichloromethane has a low boiling point and is easy to be dried and removed, thereby not affecting the surface properties of the foil. In addition, dichloromethane and rolling oil can be separated by fractionation to achieve recycling of rolling oil and dichloromethane.
在一些实施例中，所述萃取的过程中对萃取剂进行冷却处理。In some embodiments, the extractant is cooled during the extraction process.
在一些实施例中，所述萃取的过程中采用惰性气氛。In some embodiments, an inert atmosphere is used during the extraction process.
在一些实施例中，所述惰性气氛的压力大于环境气体压力。In some embodiments, the inert atmosphere has a pressure greater than the ambient gas pressure.
在一些实施例中，所述惰性气氛的气体包括氮气。In some embodiments, the inert atmosphere gas includes nitrogen.
在一些实施例中，所述烘干处理的温度为约60～100℃。In some embodiments, the drying process is performed at a temperature of about 60-100°C.
本申请提供一种上述箔材的轧制除油方法，包括以下步骤：The present application provides a rolling degreasing method for the above-mentioned foil, comprising the following steps:
箔材经轧制后，箔材进入萃取槽200内依次经多个萃取腔进行多级萃取，萃取剂的流动方向与箔材的运动方向相反，萃取剂采用溢流流动，箔材萃取后进入烘干器300，将残留在箔材表面的萃取剂烘干去除；萃取槽200内流出的混合液回收处理。After the foil is rolled, it enters the extraction tank 200 and passes through multiple extraction chambers in sequence for multi-stage extraction. The flow direction of the extractant is opposite to the movement direction of the foil. The extractant adopts overflow flow. After extraction, the foil enters the dryer 300 to dry and remove the extractant remaining on the surface of the foil. The mixed liquid flowing out of the extraction tank 200 is recovered and processed.
以下实施例中，箔材轧制后的厚度为13μm，轧制油选用CL-1#铝箔轧制油，浸入萃取剂的箔材长度为20m，箔材的类型为铝箔，放卷速度为50m/min。In the following examples, the thickness of the foil after rolling is 13 μm, the rolling oil is CL-1# aluminum foil rolling oil, the length of the foil immersed in the extractant is 20 m, the type of the foil is aluminum foil, and the unwinding speed is 50 m/min.
实施例1Example 1
本实施例提供了一种箔材轧制除油装置，包括沿箔材运动方向依次设置的箔轧器100、萃取槽200和烘干器300，所述萃取槽200的开口处设置有液封结构400，所述萃取槽200的萃取剂为二氯甲烷，烘干器300的烘干温度为80℃。The present embodiment provides a foil rolling and oil removal device, comprising a foil rolling machine 100, an extraction tank 200 and a dryer 300 arranged in sequence along the moving direction of the foil, a liquid sealing structure 400 is arranged at the opening of the extraction tank 200, the extraction agent of the extraction tank 200 is dichloromethane, and the drying temperature of the dryer 300 is 80°C.
其中，液封结构400包括盖设于所述萃取槽200开口处的密封板，所述密封板设置有两个排气口401，所述排气口401处均设置有环绕所述排气口401的储液槽402以及密封帽403，所述密封帽403的边缘浸入所述储液槽402的液面以下。The liquid sealing structure 400 includes a sealing plate covering the opening of the extraction tank 200, wherein the sealing plate is provided with two exhaust ports 401, and each of the exhaust ports 401 is provided with a liquid storage tank 402 surrounding the exhaust ports 401 and a sealing cap 403, and the edge of the sealing cap 403 is immersed below the liquid level of the liquid storage tank 402.
所述箔材轧制除油装置还包括箔材传输器，所述箔材传输器用于传输箔材，箔材在萃取槽200内呈蛇形往复运动。The foil rolling and oil removal device further comprises a foil conveyor, which is used to convey the foil, and the foil reciprocates in a serpentine shape in the extraction tank 200 .
所述箔材传输器包括放卷机构500、收卷机构600、张力机构800以及多个传输辊700；所述放卷机构500设置于所述箔轧器100的进料侧，所述收卷机构600设置于所述烘干器300的出料侧。进一步地，所述张力辊包括第一张力辊801、第二张力辊802和第三张力辊803，所述第一张力辊801设置于所述放卷机构500与所述箔轧器100之间，所述第二张力辊802设置于所述箔轧器100与所述萃取槽200之间，所述第三张力辊803设置于所述萃取槽200与所述烘干器300之间。The foil material conveyor includes an unwinding mechanism 500, a rewinding mechanism 600, a tension mechanism 800 and a plurality of conveying rollers 700; the unwinding mechanism 500 is arranged at the feeding side of the foil rolling device 100, and the rewinding mechanism 600 is arranged at the discharging side of the dryer 300. Further, the tension rollers include a first tension roller 801, a second tension roller 802 and a third tension roller 803, wherein the first tension roller 801 is arranged between the unwinding mechanism 500 and the foil rolling device 100, the second tension roller 802 is arranged between the foil rolling device 100 and the extraction tank 200, and the third tension roller 803 is arranged between the extraction tank 200 and the dryer 300.
实施例2Example 2
本实施例提供了一种箔材轧制除油装置，与实施例1相比，其区别在于，所述萃取槽200内设置有三个溢流板201，所述溢流板201的高度沿箔材的运动方向依次升高，所述溢流板201分隔所述萃取槽200形成四个萃取腔。This embodiment provides a foil rolling oil removal device. Compared with Embodiment 1, the difference lies in that three overflow plates 201 are arranged in the extraction tank 200. The height of the overflow plates 201 increases successively along the movement direction of the foil. The overflow plates 201 divide the extraction tank 200 into four extraction chambers.
位于所述萃取槽200的箔材输入一侧，所述萃取槽200设置有萃取剂出口204，位于所述萃取槽200的箔材输出一侧，所述萃取槽200设置有萃取剂进口203，所述萃取剂由 萃取剂进口203进入依次流经各个萃取腔，并由萃取剂出口204排出。The extraction tank 200 is provided with an extractant outlet 204 on the foil input side of the extraction tank 200, and is provided with an extractant inlet 203 on the foil output side of the extraction tank 200. The extractant enters from the extractant inlet 203, flows through each extraction chamber in sequence, and is discharged from the extractant outlet 204.
实施例3Example 3
本实施例提供了一种箔材轧制除油装置，与实施例2相比，其区别在于，所述萃取腔均设置有循环冷却器202，循环冷却器202包括与萃取腔循环连接的循环管路，所述循环管理上设置有循环泵以及冷却器，所述冷却器的温度为25℃。This embodiment provides a foil rolling oil removal device. Compared with Example 2, the difference is that the extraction chamber is provided with a circulating cooler 202, and the circulating cooler 202 includes a circulating pipeline circulatedly connected to the extraction chamber. The circulation management is provided with a circulating pump and a cooler, and the temperature of the cooler is 25°C.
实施例4Example 4
本实施例提供了一种箔材轧制除油装置，与实施例1相比，其区别在于，所述萃取槽200内的液面上方连接有正压气源205，正压气源205为氮气，萃取槽200内气体压力大于环境气体压力200Pa。This embodiment provides a foil rolling oil removal device. Compared with Embodiment 1, the difference lies in that a positive pressure gas source 205 is connected above the liquid surface in the extraction tank 200, the positive pressure gas source 205 is nitrogen, and the gas pressure in the extraction tank 200 is greater than the ambient gas pressure of 200Pa.
实施例5Example 5
本实施例提供了一种箔材轧制除油装置，包括沿箔材运动方向依次设置的箔轧器100、萃取槽200和烘干器300，所述萃取槽200注入有二氯甲烷。The present embodiment provides a foil rolling and oil removal device, comprising a foil rolling device 100, an extraction tank 200 and a dryer 300 which are sequentially arranged along the moving direction of the foil, wherein the extraction tank 200 is injected with dichloromethane.
所述萃取槽200的开口处设置有液封结构400，所述液封结构400包括盖设于所述萃取槽200开口处的密封板，所述密封板设置有两个排气口401，所述排气口401处均设置有环绕所述排气口401的储液槽402以及密封帽403，所述密封帽403的边缘浸入所述储液槽402的液面以下。A liquid sealing structure 400 is provided at the opening of the extraction tank 200, and the liquid sealing structure 400 includes a sealing plate covering the opening of the extraction tank 200, and the sealing plate is provided with two exhaust ports 401, and the exhaust ports 401 are each provided with a liquid storage tank 402 surrounding the exhaust ports 401 and a sealing cap 403, and the edge of the sealing cap 403 is immersed below the liquid level of the liquid storage tank 402.
所述萃取槽200内设置有三个溢流板201，所述溢流板201的高度沿箔材的运动方向依次升高，所述溢流板201分隔所述萃取槽200形成四个萃取腔，位于所述萃取槽200的箔材输入一侧，所述萃取槽200设置有萃取剂出口204，位于所述萃取槽200的箔材输出一侧，所述萃取槽200设置有萃取剂进口203，所述萃取剂由萃取剂进口203进入依次流经各个萃取腔，并由萃取剂出口204排出，所述萃取腔均设置有循环冷却器202，循环冷却器202的温度为25℃，所述萃取腔均独立设置有排液口，所述排液口均设置于所述萃取槽200的底部。Three overflow plates 201 are arranged in the extraction tank 200, and the height of the overflow plates 201 increases successively along the movement direction of the foil. The overflow plates 201 divide the extraction tank 200 into four extraction chambers, which are located on the foil input side of the extraction tank 200. The extraction tank 200 is provided with an extractant outlet 204, which is located on the foil output side of the extraction tank 200. The extraction tank 200 is provided with an extractant inlet 203. The extractant enters from the extractant inlet 203 and flows through each extraction chamber in sequence, and is discharged from the extractant outlet 204. The extraction chambers are all provided with circulating coolers 202, and the temperature of the circulating coolers 202 is 25°C. The extraction chambers are all independently provided with drain ports, and the drain ports are all arranged at the bottom of the extraction tank 200.
所述萃取槽200内的液面上方连接有正压气源205，所述正压气源205用于维持所述萃取槽200内气体压力大于环境气体压力200Pa。所述烘干器300包括壳体以及设置于所述壳体内的20个风嘴301，所述风嘴301沿箔材的运动方向依次设置，烘干器300的温度为80℃。A positive pressure gas source 205 is connected above the liquid level in the extraction tank 200, and the positive pressure gas source 205 is used to maintain the gas pressure in the extraction tank 200 greater than the ambient gas pressure of 200 Pa. The dryer 300 includes a shell and 20 air nozzles 301 arranged in the shell, and the air nozzles 301 are arranged in sequence along the moving direction of the foil. The temperature of the dryer 300 is 80°C.
所述箔材轧制除油装置还包括箔材传输器，所述箔材传输器包括放卷机构500、收卷机构600、张力机构800以及多个传输辊700；所述放卷机构500设置于所述箔轧器100的进料侧，所述收卷机构600设置于所述烘干器300的出料侧。进一步地，所述张力辊包括第一张力辊801、第二张力辊802和第三张力辊803，所述第一张力辊801设置于所述 放卷机构500与所述箔轧器100之间，所述第二张力辊802设置于所述箔轧器100与所述萃取槽200之间，所述第三张力辊803设置于所述萃取槽200与所述烘干器300之间。The foil rolling and oil removal device further includes a foil conveyor, which includes an unwinding mechanism 500, a rewinding mechanism 600, a tension mechanism 800 and a plurality of conveying rollers 700; the unwinding mechanism 500 is arranged at the feeding side of the foil rolling machine 100, and the rewinding mechanism 600 is arranged at the discharging side of the dryer 300. Further, the tension rollers include a first tension roller 801, a second tension roller 802 and a third tension roller 803, wherein the first tension roller 801 is arranged between the unwinding mechanism 500 and the foil rolling machine 100, the second tension roller 802 is arranged between the foil rolling machine 100 and the extraction tank 200, and the third tension roller 803 is arranged between the extraction tank 200 and the dryer 300.
对比例1Comparative Example 1
本对比例提供了一种箔材轧制除油装置，与实施例1相比，其区别在于，将萃取槽200和烘干器300替换为高温蒸汽吹扫装置，吹扫箔材长度为1m，高温蒸汽的温度为110℃。This comparative example provides a foil rolling oil removal device, which is different from Example 1 in that the extraction tank 200 and the dryer 300 are replaced by a high-temperature steam purging device, the purging foil length is 1 m, and the temperature of the high-temperature steam is 110°C.
对上述实施例和对比例中除油后的箔材进行表面残油率检测，测试结果如表1所示，所述检测方法包括：The surface residual oil rate of the foil after degreasing in the above embodiment and comparative example was tested, and the test results are shown in Table 1. The detection method includes:
S1、准备样品，利用裁切刀裁剪出单位面积的箔材，裁剪后箔材大小以便于萃取为准，称重并记录质量为m 0； S1. Prepare the sample, use a cutting knife to cut out the foil of unit area, the size of the foil after cutting is based on the convenience of extraction, weigh it and record the mass as m 0 ;
S2、清洗除油：将S1裁剪的样品展开，放入装有二氯甲烷的烧杯中；S2. Cleaning and degreasing: unfold the sample cut in S1 and put it into a beaker filled with dichloromethane;
S3、超声波震荡：将S2中烧杯放入超声波清洗槽，利用超声波生振荡使轧制油溶解进二氯甲烷；S3, ultrasonic vibration: put the beaker in S2 into the ultrasonic cleaning tank, and use ultrasonic vibration to dissolve the rolling oil into the dichloromethane;
S4、用镊子取出样品，放入另一个装有新二氯甲烷的烧杯中，再次超声波震荡，更彻底去除轧制油；S4. Take out the sample with tweezers, put it into another beaker filled with new dichloromethane, and ultrasonically vibrate it again to remove the rolling oil more thoroughly;
S5、将样品取出放置在表面皿内，在60℃恒温鼓风机中烘干，建议温度范围45-100℃；S5. Take out the sample and place it in a watch glass, and dry it in a constant temperature blower at 60℃. The recommended temperature range is 45-100℃.
S6、烘干后的样品进行承重，记为m 1； S6. The dried sample is subjected to a load, recorded as m 1 ;
S7、含油率的计算公式：(m 0-m 1)/m 0×100％。 S7. Calculation formula for oil content: (m 0 -m 1 )/m 0 ×100%.
表1Table 1
 The 表面残油率Surface residual oil rate
实施例1Example 1 0.10％0.10%
实施例2Example 2 0.07％0.07%
实施例3Example 3 0.06％0.06%
实施例4Example 4 0.08％0.08%
实施例5Example 5 0.05％0.05%
对比例1Comparative Example 1 4.00％4.00%
由上表可知：From the above table, we can see that:
(1)通过实施例2可以看出，本申请中在萃取槽200内设置多个溢流板201，并且通过溢流板201高度的不同，使萃取剂的溢流方向与箔材的运动方向相反，实现箔材的多级逆流萃取，提高箔材表面与萃取剂的接触效果，而且萃取后轧制油漂浮在萃取剂液面的表面，从而通过溢流的方式能够将表面含轧制油的液层排出，有效保证萃取槽200的萃取效果。(1) It can be seen from Example 2 that in the present application, a plurality of overflow plates 201 are arranged in the extraction tank 200, and by means of the different heights of the overflow plates 201, the overflow direction of the extractant is opposite to the movement direction of the foil, thereby realizing multi-stage countercurrent extraction of the foil, improving the contact effect between the foil surface and the extractant, and after extraction, the rolling oil floats on the surface of the extractant liquid, so that the liquid layer containing the rolling oil on the surface can be discharged by overflow, thereby effectively ensuring the extraction effect of the extraction tank 200.
(2)通过实施例3可以看出，本申请通过对萃取剂进行循环流动冷却，实现萃取剂的内循环流动，保证萃取腔内的萃取剂均一性，提高萃取剂的扰流流动，保证萃取剂与箔材的接触扰动，从而提高萃取效果，进一步地，萃取剂在循环流动过程中与冷却器接触降温，降低萃取剂温度，减少萃取剂蒸发以及水汽蒸发，从而减少水汽凝结。(2) It can be seen from Example 3 that the present application realizes internal circulation flow of the extractant by circulating and cooling the extractant, thereby ensuring the uniformity of the extractant in the extraction chamber, improving the turbulent flow of the extractant, and ensuring the contact disturbance between the extractant and the foil, thereby improving the extraction effect. Furthermore, the extractant is cooled by contact with the cooler during the circulation process, thereby lowering the temperature of the extractant, reducing the evaporation of the extractant and the evaporation of water vapor, and thus reducing the condensation of water vapor.
(3)通过实施例4可以看出，本申请中通过向萃取槽200内通入气体，从而使萃取槽200内形成微正压状态，有效避免环境气体中水汽进入萃取槽200，减少水汽凝结，而且通过微正压的方式，降低了萃取剂的挥发。(3) It can be seen from Example 4 that in the present application, by introducing gas into the extraction tank 200, a slightly positive pressure state is formed in the extraction tank 200, which effectively prevents water vapor in the ambient gas from entering the extraction tank 200, reduces water vapor condensation, and reduces the volatilization of the extractant by means of slightly positive pressure.
通过上述实施例和对比例，本申请对轧制后的箔材进行萃取和烘干处理，实现连续、高效地去除箔材表面轧制油，箔材经轧制后温度升高，进入萃取槽200后与萃取剂接触，有效去除表面轧制油，而且采用液封结构400减少了萃取剂的挥发，并减少冷凝水的产生，避免冷凝水滴落至箔材表面，影响箔材表面性能，含油率能够下降至0.1％以下。Through the above-mentioned embodiments and comparative examples, the present application extracts and dries the rolled foil to achieve continuous and efficient removal of rolling oil on the foil surface. The temperature of the foil increases after rolling, and after entering the extraction tank 200, it comes into contact with the extractant to effectively remove the surface rolling oil. In addition, the liquid seal structure 400 is used to reduce the volatilization of the extractant and the generation of condensed water, thereby preventing condensed water from dripping onto the foil surface and affecting the surface performance of the foil. The oil content can be reduced to below 0.1%.
以上所述实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。The technical features of the above-described embodiments may be arbitrarily combined. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
以上所述实施例仅表达了本申请的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对申请专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本申请构思的前提下，还可以做出若干变形和改进，这些都属于本申请的保护范围。因此，本申请专利的保护范围应以所附权利要求为准。The above-described embodiments only express several implementation methods of the present application, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent application. It should be pointed out that, for a person of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present application, and these all belong to the protection scope of the present application. Therefore, the protection scope of the patent application shall be subject to the attached claims.

Claims (17)

  1. 一种箔材轧制除油装置，包括：A foil rolling degreasing device, comprising:
    箔轧器，用于对箔材进行轧制；A foil rolling mill, used for rolling foil;
    萃取槽，所述萃取槽内注入有萃取剂，所述萃取槽的开口处设置有液封结构，所述萃取槽对所述箔轧器输出的箔材进行萃取除油；An extraction tank, in which an extractant is injected, a liquid sealing structure is provided at the opening of the extraction tank, and the extraction tank extracts and removes oil from the foil output by the foil rolling machine;
    烘干器，所述烘干器用于对所述萃取槽输出的箔材进行烘干；以及A dryer, the dryer being used to dry the foil outputted from the extraction tank; and
    箔材传输器，用于由所述箔轧器、所述萃取槽至所述烘干器传输箔材。A foil conveyor is used to convey the foil from the foil rolling machine, the extraction tank to the dryer.
  2. 如权利要求1所述的箔材轧制除油装置，所述萃取槽内设置有多个溢流板，所述溢流板的高度沿箔材的运动方向依次升高，多个所述溢流板分隔所述萃取槽形成多个萃取腔。According to the foil rolling oil removal device as described in claim 1, a plurality of overflow plates are arranged in the extraction tank, the height of the overflow plates increases successively along the movement direction of the foil, and the plurality of overflow plates divide the extraction tank to form a plurality of extraction chambers.
  3. 如权利要求2所述的箔材轧制除油装置，位于所述萃取槽的箔材输入一侧，所述萃取槽设置有萃取剂出口；位于所述萃取槽的箔材输出一侧，所述萃取槽设置有萃取剂进口，所述萃取剂由所述萃取剂进口进入依次流经各个所述萃取腔，并由所述萃取剂出口排出。The foil rolling oil removal device as described in claim 2 is located on the foil input side of the extraction tank, and the extraction tank is provided with an extractant outlet; located on the foil output side of the extraction tank, the extraction tank is provided with an extractant inlet, the extractant enters from the extractant inlet, flows through each of the extraction chambers in sequence, and is discharged from the extractant outlet.
  4. 如权利要求3所述的箔材轧制除油装置，所述萃取槽内设置有至少一个循环冷却器；The foil rolling deoiling device according to claim 3, wherein at least one circulating cooler is provided in the extraction tank;
    各个所述萃取腔内均设置有所述循环冷却器，所述循环冷却器用于调节所述萃取腔内的萃取剂温度。The circulating cooler is arranged in each extraction chamber, and the circulating cooler is used to adjust the temperature of the extractant in the extraction chamber.
  5. 如权利要求1-4任一项所述的箔材轧制除油装置，所述液封结构包括盖设于所述萃取槽开口处的密封板，所述密封板设置有至少一个排气口，所述密封板位于各个所述排气口处均设置储液槽以及密封帽，所述储液槽环绕设置于所述排气口的周向；所述密封帽盖设于所述排气口处，并且所述密封帽的边缘浸入所述储液槽的液面以下。According to the foil rolling deoiling device as described in any one of claims 1 to 4, the liquid sealing structure includes a sealing plate covering the opening of the extraction tank, the sealing plate is provided with at least one exhaust port, and the sealing plate is provided with a liquid storage tank and a sealing cap at each exhaust port, the liquid storage tank is arranged around the circumference of the exhaust port; the sealing cap is covered at the exhaust port, and the edge of the sealing cap is immersed below the liquid level of the liquid storage tank.
  6. 如权利要求1-4任一项所述的箔材轧制除油装置，所述萃取槽外接有正压气源，所述正压气源接入所述萃取槽的液面上方空间，所述正压气源用于维持所述萃取槽内气体压力大于环境气体压力。According to the foil rolling oil removal device as described in any one of claims 1 to 4, the extraction tank is externally connected to a positive pressure gas source, the positive pressure gas source is connected to the space above the liquid surface of the extraction tank, and the positive pressure gas source is used to maintain the gas pressure in the extraction tank greater than the ambient gas pressure.
  7. 如权利要求1-4任一项所述的箔材轧制除油装置，所述箔材传输器包括放卷机构、收卷机构、张力机构以及多个传输辊；The foil rolling and oil removal device according to any one of claims 1 to 4, wherein the foil conveyor comprises an unwinding mechanism, a winding mechanism, a tension mechanism and a plurality of conveying rollers;
    所述放卷机构设置于所述箔轧器的输入侧，所述收卷机构设置于所述烘干器的输出侧。The unwinding mechanism is arranged at the input side of the foil rolling machine, and the winding mechanism is arranged at the output side of the dryer.
  8. 如权利要求7所述的箔材轧制除油装置，所述张力机构包括至少一个张力辊，所述张力辊用于提供箔材张力。The foil rolling and oil removal device according to claim 7, wherein the tension mechanism comprises at least one tension roller, and the tension roller is used to provide foil tension.
  9. 如权利要求8所述的箔材轧制除油装置，所述张力机构包括第一张力辊、第二张力辊和第三张力辊，所述第一张力辊设置于所述放卷机构与所述箔轧器之间，所述第二张力辊设置于所述箔轧器与所述萃取槽之间，所述第三张力辊设置于所述萃取槽与所述烘干器 之间。According to the foil rolling and oil removal device as described in claim 8, the tension mechanism includes a first tension roller, a second tension roller and a third tension roller, the first tension roller is arranged between the unwinding mechanism and the foil roll, the second tension roller is arranged between the foil roll and the extraction tank, and the third tension roller is arranged between the extraction tank and the dryer.
  10. 如权利要求2-4任一项所述的箔材轧制除油装置，各个所述萃取腔均独立设置有排液口，所述排液口均设置于各个所述萃取槽的底部。According to the foil rolling oil removal device as described in any one of claims 2 to 4, each of the extraction chambers is independently provided with a drain port, and the drain port is arranged at the bottom of each of the extraction tanks.
  11. 如权利要求1-4任一项所述的箔材轧制除油装置，所述烘干器包括壳体，所述壳体内设置有多个风嘴，所述风嘴沿箔材的运动方向依次设置，所述风嘴的吹出方向朝向所述箔材。According to the foil rolling and oil removal device as described in any one of claims 1 to 4, the dryer includes a shell, and a plurality of air nozzles are arranged in the shell, the air nozzles are arranged in sequence along the movement direction of the foil, and the blowing direction of the air nozzles is toward the foil.
  12. 一种箔材的轧制除油方法，所述轧制除油方法采用权利要求1-11任一项所述的箔材轧制除油装置，所述轧制除油方法包括以下步骤：A method for removing oil from foil during rolling, the method using the foil rolling oil removal device according to any one of claims 1 to 11, the method comprising the following steps:
    将箔材进行轧制后，依次采用萃取剂萃取和烘干处理，从而去除箔材表面的轧制油。After the foil is rolled, it is sequentially extracted with an extractant and dried to remove the rolling oil on the surface of the foil.
  13. 如权利要求12所述的轧制除油方法，所述萃取的过程中采用逆流接触萃取，所述箔材的运动方向与萃取剂的流动方向相反。The rolling deoiling method as described in claim 12, wherein countercurrent contact extraction is adopted during the extraction process, and the movement direction of the foil is opposite to the flow direction of the extractant.
  14. 如权利要求12所述的轧制除油方法，所述萃取剂包括二氯甲烷。The rolling degreasing method as claimed in claim 12, wherein the extractant comprises dichloromethane.
  15. 如权利要求12-14任一项所述的轧制除油方法，所述萃取的过程中对萃取剂进行冷却处理。The rolling degreasing method according to any one of claims 12 to 14, wherein the extractant is cooled during the extraction process.
  16. 如权利要求12-14任一项所述的轧制除油方法，所述萃取的过程中采用惰性气氛，所述惰性气氛的压力大于环境气体压力，所述惰性气氛的气体包括氮气。In the rolling degreasing method according to any one of claims 12 to 14, an inert atmosphere is used during the extraction process, the pressure of the inert atmosphere is greater than the ambient gas pressure, and the gas of the inert atmosphere includes nitrogen.
  17. 如权利要求12-14任一项所述的轧制除油方法，所述烘干处理的温度为约60～100℃。The rolling degreasing method according to any one of claims 12 to 14, wherein the temperature of the drying treatment is about 60 to 100°C.
PCT/CN2022/136834 2022-12-06 2022-12-06 Foil-rolling oil removal device and rolling oil removal method WO2024119361A1 (en)

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EP1827724A1 (en) * 2004-12-14 2007-09-05 SMS Demag AG Method and device for strip blowing-off at the exit from a rolling mill for the production of a spot-free and clean rolled strip
JP2012166254A (en) * 2011-02-16 2012-09-06 San Alum Kogyo Kk Flame treatment device and method for manufacturing aluminum foil for battery
CN102189124A (en) * 2011-04-18 2011-09-21 中色科技股份有限公司 Process for removing oil on surface of calendered metal strap foil
CN102847733A (en) * 2012-08-20 2013-01-02 洛阳首龙铝业有限责任公司 Aluminum foil vacuum low-temperature oil removing process and equipment
CN203900123U (en) * 2014-06-12 2014-10-29 郑州通达重型机械制造有限公司 Foil flushing box, foil drying box and foil cleaning production line
CN204934219U (en) * 2015-09-21 2016-01-06 山西省运城市龙飞有色金属有限公司 Hydrophilic coating line for foil aluminium degreasing unit
CN207038603U (en) * 2017-07-24 2018-02-23 河北金力新能源科技股份有限公司 Extraction equipment during lithium ion cell film wet method preparation process
CN112195332A (en) * 2020-09-30 2021-01-08 江苏大学 Grading oil removal annealing process for 8011 aluminum foil tape base material
CN113737194A (en) * 2021-08-13 2021-12-03 洛阳铜研智能装备有限公司 Copper foil degreasing cleaning line

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