Waste aluminum depainting, drying and incineration process

Abstract

The invention relates to the technical field of waste aluminum treatment, in particular to a waste aluminum depainting, drying and incineration process which comprises a depainting module, a deoiling module, an oil absorption module and an oil scraping module. Crushed aluminum skimmings are soaked in water in the deoiling chamber, then the air blower enables water mixed with the aluminum skimmings in the deoiling chamber to flow, oil films on the surfaces of the aluminum skimmings are cleaned, the ice placing box is transversely placed, then the oil films are adsorbed on the surfaces of the ice bricks, and when the bottoms of the ice bricks are full of the oil films, the motor drives the ice placing box and the ice bricks to stand vertically. Then the motor II uses a threaded rod to influence the rising of the rubber plate, the rubber plate scrapes off an oil film on the ice brick, when the rubber plate reaches the position of the oil film box, the oil film falls into the oil film box along the inclined surface, and then the steps are repeated from bottom to top, so that the ice box is transversely placed again and the rubber plate returns to the interior of the deoiling chamber, and the purpose of circularly cleaning liquid water in the deoiling chamber is achieved. And the cleanliness of clean water in the deoiling chamber is ensured, so that the clean water can better clean aluminum skimmings, and water resources are saved.

Description

Technical Field

[0001] The invention relates to the technical field of waste aluminum treatment, in particular to a process for depainting, drying and incinerating waste aluminum. Background Art

[0002] The process of scrap aluminum depainting, drying and incineration is a process that matches the secondary flue gas circulation treatment aluminum chip dryer. It is a pre-treatment process before the recycled aluminum material is put into the double-chamber furnace and other melting furnaces. The process of scrap aluminum depainting, drying and incineration links the aluminum chip dryer with the flue gas incinerator and then connects it to the double-chamber furnace. The waste heat flue gas of the double-chamber furnace is used to depaint and dry aluminum products with paint, aluminum chips, etc., and the waste heat is circulated. The flue gas generated during the drying process is collected, settled, incinerated, and heat-circulated for drying.

[0003] In order to improve the quality of molten aluminum after recycling, the aluminum blocks to be melted will be crushed and then deoiled and dehydrated. The deoiling method mostly uses water flushing, but this method has little effect on the oil film and wastes water seriously. Therefore, a new deoiling device is needed. Summary of the invention

[0004] The present invention aims to solve one of the technical problems existing in the prior art or related technology.

[0005] To this end, the technical solution adopted in the present invention is: A waste aluminum paint stripping, drying and incineration process, including a paint stripping module, an oil removal module, an oil suction module and an oil scraping module, the paint stripping module including a paint stripping chamber, a paint stripping dryer arranged on one side of the paint stripping chamber, a vacuum suction machine connected between the paint stripping chamber and the paint stripping dryer, a smoke outlet pipe connected and communicated with the paint stripping dryer, an incinerator connected and communicated with the smoke outlet pipe, and a high-temperature circulating fan connected between the paint stripping dryer and the incinerator, the oil stripping module including a partition installed inside the oil stripping chamber, a crusher connected between the oil stripping chamber and the partition, a blower arranged on the top of the vacuum suction machine and connected to the oil stripping chamber, a drain pipe installed on the rear side of the oil stripping chamber, and a solenoid valve installed on the drain pipe. , an oil suction module, the oil suction module includes an ice box movably installed on the top of the deoiling chamber, a motor 1 connected between the deoiling chamber and the ice box, an ice sliding channel connected to the top of the ice box, a hydraulic cylinder transversely penetrating the ice sliding channel, an ice brick machine connected to the top of the ice sliding channel, and an opening opened at the bottom of the ice box; an oil scraping module, the oil scraping module includes two guide rods installed inside the deoiling chamber, a slide plate slidably sleeved on the outside of the guide rods, a rubber plate connected between the two slide plates, a threaded rod vertically penetrating one side of the rubber plate, a motor 2 embedded in the bottom of the deoiling chamber and connected to the threaded rod, and an oil film box provided on the top of the ice brick machine, and the oil film box is fixedly connected to the deoiling chamber.

[0006] By adopting the above technical scheme, the crushed aluminum chips are soaked in water in the deoiling chamber, and then the blower makes the water mixed with aluminum chips flow in the deoiling chamber, and the oil film on the surface of the aluminum chips is cleaned. Here, the ice box is placed horizontally, and then the oil film is adsorbed on the surface of the ice brick. When the bottom of the ice brick is full of oil film, the motor 1 brings the ice box and the ice brick to stand upright, and then the motor 2 uses a threaded rod to affect the rubber plate to rise, and the rubber plate scrapes off the oil film on the ice brick. When the rubber plate reaches the position of the oil film box, the oil film falls into the oil film box along the inclined surface, and then from bottom to top, the above steps are repeated, so that the ice box is placed horizontally again and the rubber plate returns to the inside of the deoiling chamber, thereby achieving the purpose of circulating and cleaning the liquid water in the deoiling chamber, ensuring the cleanliness of the clean water in the deoiling chamber, so that it can better clean the aluminum chips and save water resources.

[0007] In a preferred example, the present invention can be further configured as follows: the thickness of the rubber plate is greater than the thickness of the skateboard, and the top of the rubber plate is set as an inclined surface.

[0008] In a preferred example, the present invention can be further configured as follows: an auxiliary burning assembly is provided on one side of the incinerator, and the auxiliary burning assembly includes a burner and an inspection door installed on one side of the incinerator, and a thermocouple movably installed on the front side of the burner; the inspection door is located on the rear side of the burner and is electrically connected to the control system of the burner.

[0009] In a preferred example, the present invention can be further configured as follows: a dust removal assembly is provided on the other side of the incinerator, and the dust removal assembly includes a circulating fan connected and communicated with the incinerator, a desulfurization and denitrification tower connected and communicated with the circulating fan, a dust collector connected and communicated with the desulfurization and denitrification tower, and an activated carbon box plugged into the dust collector.

[0010] In a preferred example, the present invention can be further configured as follows: an exhaust assembly is provided on one side of the dust collector, and the exhaust assembly includes a circulating water heat exchanger connected and communicated with the dust collector, a quenching tower connected and communicated with the circulating water heat exchanger, and a main flue pipe connected and communicated with the quenching tower.

[0011] In a preferred example, the present invention can be further configured as follows: a feeding channel is installed on the top of the de-oiling chamber, the feeding channel is located on the top of the crusher and is arranged on one side of the ice box, and the feeding channel is arranged obliquely.

[0012] In a preferred example, the present invention can be further configured as follows: a filter is installed on the inner thread of the drain pipe, and the filter is located at the rear side of the solenoid valve.

[0013] By adopting the above technical solution, the beneficial effects achieved by the present invention are: 1. In the present invention, the crushed aluminum chips are soaked in water in the deoiling chamber, and then the blower makes the water mixed with the aluminum chips flow in the deoiling chamber, and the oil film on the surface of the aluminum chips is cleaned. Here, the ice box is placed horizontally, and then the oil film is adsorbed on the surface of the ice brick. When the bottom of the ice brick is full of oil film, the motor 1 leads the ice box and the ice brick to stand upright, and then the motor 2 uses a threaded rod to affect the rubber plate to rise, and the rubber plate scrapes off the oil film on the ice brick. When the rubber plate reaches the position of the oil film box, the oil film falls into the oil film box along the inclined surface, and then from bottom to top, the above steps are repeated, so that the ice box is placed horizontally again and the rubber plate returns to the inside of the deoiling chamber, thereby achieving the purpose of circulating and cleaning the liquid water in the deoiling chamber, ensuring the cleanliness of the clean water in the deoiling chamber, making it better to clean the aluminum chips, and saving water resources.

[0014] 2. In the present invention, waste materials are put into the feeding channel, and then the crusher located at the bottom of the feeding channel crushes the waste materials. During this process, the staff starts the blower, and then the water mixed with the crushed raw materials in the de-oiling chamber flows rapidly, and then the crushed raw materials are circulated into the crusher in the working state, ensuring that each piece of raw material can be reduced to the minimum volume, which is convenient for the next melting process to melt these aluminum chips.

[0015] 3. In the present invention, after cleaning is completed, the crusher is turned off, and then the drain pipe is connected with an external pipe, and then the solenoid valve is opened, and then the clean water in the deoiling chamber flows out, so that only aluminum chips remain in the deoiling chamber, and these aluminum chips are dried by the wind blown by the blower, and then the vacuum suction machine is turned on to make the aluminum chips in the deoiling chamber enter the paint stripping dryer for paint stripping, which effectively prevents explosions caused by water and oil problems during the paint stripping process.

[0016] 4. In the present invention, the harmful gas generated by paint stripping is sent to the incinerator through the smoke outlet pipe for incineration, and then the burner is used to assist in heating so that the temperature in the incinerator reaches 800°-1200°, thereby achieving gas harmlessness. The gas is then extracted by the circulating fan, treated by the desulfurization and denitrification tower, and then flows through the dust collector and the activated carbon box, which further improves the gas quality. The gas is then cooled by the circulating water heat exchanger and the quenching tower, and the gas is quenched to below 250°, effectively inhibiting the regeneration of dioxins. The gas is then discharged from the main flue pipe, thereby achieving pollution-free emission. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of a paint stripping module of the present invention; Figure 3 This is a schematic diagram of the deoiling module of the present invention; Figure 4 This is a schematic diagram of the oil absorption module of the present invention; Figure 5 This is a schematic diagram of the internal structure of the deoiling chamber of the present invention; Figure 6It is a schematic diagram of the disassembly of the partial structure of the oil scraping module of the present invention; Figure 7 It is a schematic diagram of the connection relationship between the auxiliary burning component and the dust removal component of the present invention; Figure 8 Schematic diagram of the exhaust assembly of the present invention.

[0018] Reference numerals: 100, paint stripping module; 110, deoiling chamber; 120, vacuum suction machine; 130, paint stripping drying machine; 140, smoke exhaust pipe; 150, incinerator; 160, high-temperature circulation fan; 200, de-oiling module; 210, partition; 220, crusher; 230, blower; 240, drain pipe; 250, solenoid valve; 300, oil suction module; 310, ice tray; 320, motor 1; 330, ice skating channel; 340, hydraulic cylinder; 350, ice block machine; 400, oil scraping module; 410, guide rod; 420, slide plate; 430, rubber plate; 440, threaded rod; 450, motor 2; 460, oil film box; 500, auxiliary burning assembly; 510, burner; 520, inspection door; 530, thermocouple; 600, dust removal component; 610, circulating fan; 620, desulfurization and denitrification tower; 630, dust collector; 640, activated carbon box; 700, exhaust assembly; 710, circulating water heat exchanger; 720, quenching tower; 730, main flue pipe; 800, feeding channel; 900. Filter. DETAILED DESCRIPTION

[0019] To make the purpose, technical solution and advantages of the present invention more clear, the present invention is further described in detail below in combination with specific implementations and with reference to the accompanying drawings. It should be noted that the embodiments of the present invention and the features in the embodiments can be combined with each other without conflict.

[0020] It is to be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention.

[0021] The following describes the waste aluminum depainting, drying and incineration process provided by some embodiments of the present invention in conjunction with the accompanying drawings.

[0022] Embodiment 1:

[0023] Combination Figure 1-Figure 8As shown, the waste aluminum depainting, drying and incineration process provided by the present invention includes a depainting module 100, an oil removal module 200, an oil suction module 300 and an oil scraping module 400, wherein the depainting module 100 includes a depainting chamber 110, a depainting dryer 130 arranged on one side of the depainting chamber 110, a vacuum suction machine 120 connected between the depainting chamber 110 and the depainting dryer 130, a smoke outlet pipe 140 connected and communicated with the depainting dryer 130, an incinerator 150 connected and communicated with the smoke outlet pipe 140, and a high-temperature circulating fan 160 connected between the depainting dryer 130 and the incinerator 150; The de-oiling module 200 includes a partition 210 installed inside the de-oiling chamber 110, a crusher 220 connected between the de-oiling chamber 110 and the partition 210, a blower 230 provided on the top of the vacuum suction machine 120 and connected to the de-oiling chamber 110, a drain pipe 240 installed at the rear side of the de-oiling chamber 110, and a solenoid valve 250 installed on the drain pipe 240; The oil suction module 300 includes an ice box 310 movably mounted on the top of the de-oiling chamber 110, a motor 320 connected between the de-oiling chamber 110 and the ice box 310, an ice sliding channel 330 connected to the top of the ice box 310, a hydraulic cylinder 340 transversely passing through the ice sliding channel 330, an ice block machine 350 connected to the top of the ice sliding channel 330, and an opening at the bottom of the ice box 310; The oil scraping module 400 includes two guide rods 410 installed inside the de-oiling chamber 110, a slide plate 420 slidably sleeved on the outside of the guide rods 410, a rubber plate 430 connected between the two slide plates 420, a threaded rod 440 vertically passing through one side of the rubber plate 430, a second motor 450 embedded in the bottom of the de-oiling chamber 110 and connected to the threaded rod 440, and an oil film box 460 provided on the top of the ice brick machine 350, wherein the oil film box 460 is fixedly connected to the de-oiling chamber 110.

[0024] Furthermore, the thickness of the rubber plate 430 is greater than the thickness of the slide plate 420, and the top of the rubber plate 430 is set as an inclined surface. With this size design, the rubber plate 430 moving upward can enter the opening, ensuring that the oil film on the ice brick can be scraped off.

[0025] Furthermore, a feeding channel 800 is installed on the top of the de-oiling chamber 110. The feeding channel 800 is located on the top of the crusher 220 and is arranged on one side of the ice box 310. The feeding channel 800 is inclined. The feeding channel 800 can accurately feed the waste aluminum into the de-oiling chamber 110.

[0026] Furthermore, a filter screen 900 is installed on the inner thread of the drain pipe 240 , and the filter screen 900 is located at the rear side of the solenoid valve 250 . The filter screen 900 can prevent aluminum chips from rushing out of the drain pipe 240 when the clean water in the de-oiling chamber 110 is discharged.

[0027] Embodiment 2:

[0028] Combination Figure 1 As shown in the figure, on the basis of Example 1, an auxiliary burning assembly 500 is provided on one side of the incinerator 150. The auxiliary burning assembly 500 includes a burner 510 and an inspection door 520 installed on one side of the incinerator 150, and a thermocouple 530 movably installed on the front side of the burner 510. The inspection door 520 is located on the rear side of the burner 510 and is electrically connected to the control system of the burner 510. The burner 510 is used to assist in heating so that the temperature in the incinerator 150 reaches 800°-1200°. Then the thermocouple 530 monitors the temperature in the incinerator 150 in real time. When the temperature is higher than the above temperature range, the burner 510 will be ordered to close to prevent damage to the incinerator 150 and achieve gas harmlessness.

[0029] Embodiment three:

[0030] Combination Figure 1 As shown in the figure, in the above embodiment, a dust removal component 600 is provided on the other side of the incinerator 150. The dust removal component 600 includes a circulating fan 610 connected and communicated with the incinerator 150, a desulfurization and denitrification tower 620 connected and communicated with the circulating fan 610, a dust collector 630 connected and communicated with the desulfurization and denitrification tower 620, and an activated carbon box 640 plugged into the dust collector 630. The gas is extracted by the circulating fan 610, processed by the desulfurization and denitrification tower 620, and then flows through the dust collector 630 and the activated carbon box 640, which further improves the gas quality.

[0031] Specifically, an exhaust assembly 700 is provided on one side of the dust collector 630, and the exhaust assembly 700 includes a circulating water heat exchanger 710 connected and communicated with the dust collector 630, a quenching tower 720 connected and communicated with the circulating water heat exchanger 710, and a main flue pipe 730 connected and communicated with the quenching tower 720. The gas is cooled by the circulating water heat exchanger 710 and the quenching tower 720, and the gas is quenched to below 250°, which effectively inhibits the regeneration of dioxins, and then the gas is discharged from the main flue pipe 730.

[0032] The working principle and use process of the present invention: When the device is put into actual use, waste materials are put into the feeding channel 800, and then the crusher 220 located at the bottom of the feeding channel 800 crushes the waste materials. During this process, the staff starts the blower 230, and then the water mixed with the crushed raw materials in the de-oiling chamber 110 flows rapidly, and then the crushed raw materials circulate into the crusher 220 in the working state, ensuring that each piece of raw material can be reduced to the minimum volume, which is convenient for the next melting process to melt these aluminum chips raw materials. At the same time, the aluminum chips flow flexibly with the water flow, which is convenient for the degreasing of the grease on the aluminum chips, and then the removed oil forms an oil film on the water surface, and the ice cubes produced by the ice brick machine 350 fall here. In the ice skating channel 330, the hydraulic cylinder 340 pushes the ice cubes into the ice box 310, and then, while ensuring that the ice box 310 is placed horizontally, the water and oil film in the de-oiling chamber 110 contact the ice bricks through the opening, and then the oil film is adsorbed on the surface of the ice bricks. When the bottom of the ice bricks is full of oil film, the motor 1 320 is started, and then the ice box 310 stands upright with the ice bricks, and then the motor 2 450 is started, and then the threaded rod 440 affects the movement of the rubber plate 430. The rubber plate 430 moves vertically upward under the limitation of the guide rod 410 and the slide plate 420, and then the rubber plate 430 scrapes the oil film on the ice bricks. When the rubber plate 430 reaches the position of the oil film box 460, the oil film The aluminum chips are then removed from the oil film box 460 and then dropped into the oil film box 460 along the inclined surface. The above steps are then repeated from bottom to top, so that the ice box 310 is placed horizontally again and the rubber sheet 430 returns to the inside of the de-oiling chamber 110. This achieves the purpose of circulating and cleaning the liquid water in the de-oiling chamber 110, ensures the cleanliness of the clean water in the de-oiling chamber 110, and makes it better to clean the aluminum chips. After the cleaning is completed, the crusher 220 is turned off, and the drain pipe 240 is connected with an external pipe, and then the solenoid valve 250 is opened, and then the clean water in the de-oiling chamber 110 flows out, so that only aluminum chips remain in the de-oiling chamber 110. These aluminum chips are dried by the wind blown by the blower 230, and then the vacuum suction machine 120 is turned on to clean the de-oiling chamber 110. The aluminum chips in 110 enter the paint stripping dryer 130 for paint stripping, and the harmful gases generated by the paint stripping are sent to the incinerator 150 for incineration through the smoke outlet pipe 140. Then the burner 510 is used to assist in heating so that the temperature in the incinerator 150 reaches 800°-1200°, thereby rendering the gas harmless. Then the gas is extracted by the circulating fan 610, treated by the desulfurization and denitrification tower 620, and then flows through the dust collector 630 and the activated carbon box 640, which further improves the gas quality. Then the gas is cooled by the circulating water heat exchanger 710 and the quenching tower 720, and the gas is quenched to below 250°, thereby effectively inhibiting the regeneration of dioxins. Then the gas is discharged from the main flue pipe 730.

[0033] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A process for the drying and incineration of waste aluminum paint stripping, characterized in that: include: A paint stripping module (100), the paint stripping module (100) comprising a deoiling chamber (110), a paint stripping dryer (130) arranged at one side of the deoiling chamber (110), a vacuum suction machine (120) connected between the deoiling chamber (110) and the paint stripping dryer (130), a smoke outlet pipe (140) connected to and in communication with the paint stripping dryer (130), an incinerator (150) connected to and in communication with the smoke outlet pipe (140), and a high-temperature circulation fan (160) connected between the paint stripping dryer (130) and the incinerator (150); A de-oiling module (200), the de-oiling module (200) comprising a partition (210) installed inside the de-oiling chamber (110), a crusher (220) connected between the de-oiling chamber (110) and the partition (210), a blower (230) provided on the top of the vacuum suction machine (120) and connected to the de-oiling chamber (110), a drain pipe (240) installed on the rear side of the de-oiling chamber (110), and a solenoid valve (250) installed on the drain pipe (240); An oil suction module (300), the oil suction module (300) comprising an ice box (310) movably mounted on the top of the de-oiling chamber (110), a motor (320) connected between the de-oiling chamber (110) and the ice box (310), an ice sliding channel (330) connected to the top of the ice box (310), a hydraulic cylinder (340) transversely penetrating the ice sliding channel (330), an ice block machine (350) connected to the top of the ice sliding channel (330), and an opening at the bottom of the ice box (310); An oil scraping module (400) includes two guide rods (410) installed inside the de-oiling chamber (110), a slide plate (420) slidably sleeved on the outside of the guide rods (410), a rubber plate (430) connected between the two slide plates (420), a threaded rod (440) vertically penetrating one side of the rubber plate (430), a second motor (450) embedded in the bottom of the de-oiling chamber (110) and connected to the threaded rod (440), and an oil film box (460) provided on the top of the ice brick machine (350), wherein the oil film box (460) is fixedly connected to the de-oiling chamber (110).

2. The waste aluminum paint stripping, drying and incineration process according to claim 1, characterized in that: The thickness of the rubber plate (430) is greater than the thickness of the slide plate (420), and the top of the rubber plate (430) is arranged as an inclined surface.

3. The waste aluminum paint stripping, drying and incineration process according to claim 1 is characterized in that: An auxiliary burning assembly (500) is provided on one side of the incinerator (150), the auxiliary burning assembly (500) comprising a burner (510) and an inspection door (520) installed on one side of the incinerator (150), and a thermocouple (530) movably installed on the front side of the burner (510), the inspection door (520) being located on the rear side of the burner (510) and being electrically connected to a control system of the burner (510).

4. The waste aluminum paint stripping, drying and incineration process according to claim 1 is characterized in that: A dust removal assembly (600) is provided on the other side of the incinerator (150), and the dust removal assembly (600) comprises a circulating fan (610) connected to and in communication with the incinerator (150), a desulfurization and denitrification tower (620) connected to and in communication with the circulating fan (610), a dust collector (630) connected to and in communication with the desulfurization and denitrification tower (620), and an activated carbon box (640) plugged into the dust collector (630).

5. The waste aluminum paint stripping, drying and incineration process according to claim 4 is characterized in that: An exhaust assembly (700) is provided on one side of the dust collector (630), and the exhaust assembly (700) comprises a circulating water heat exchanger (710) connected to and in communication with the dust collector (630), a quenching tower (720) connected to and in communication with the circulating water heat exchanger (710), and a main flue pipe (730) connected to and in communication with the quenching tower (720).

6. The waste aluminum paint stripping, drying and incineration process according to claim 1 is characterized in that: A feeding channel (800) is installed on the top of the de-oiling chamber (110); the feeding channel (800) is located on the top of the crusher (220) and is arranged on one side of the ice box (310); the feeding channel (800) is arranged obliquely.

7. The waste aluminum paint stripping, drying and incineration process according to claim 1 is characterized in that: A filter screen (900) is threadedly mounted inside the drain pipe (240), and the filter screen (900) is located at the rear side of the solenoid valve (250).

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