CN107309253B - Production process and production line for preparing high-molecular resin composite solid powder from paint waste residues - Google Patents

Abstract

The invention discloses a production process and a production line for preparing polymer resin composite solid powder from paint waste residues. The invention has the beneficial effects that: the production line can realize harmless, continuous and automatic operation treatment of paint waste residue recycling, wastewater generated in the operation process is recycled, generated waste gas is recycled, secondary pollution such as wastewater, waste gas and dust is avoided, process conditions and product quality are controllable, and production efficiency is high.

Description

Production process and production line of polymer resin composite solid powder prepared from paint waste

technical field

The invention relates to the technical field of waste recycling and utilization, in particular to a production process for preparing solid powder from paint waste residue.

Background technique

Coating is an important production process in the manufacturing process of mechanical and electrical products. Different coating methods and different coating utilization rates generally have 20%-50% of the paint turned into paint waste. Waste paint residue is a nationally recognized hazardous solid waste. According to incomplete statistics, my country produces several million tons of paint waste every year, causing serious economic burdens to enterprises and serious environmental risks.

The composition of paint waste is similar to that of the original paint, but after flocculation and precipitation, the performance changes greatly, and it contains a lot of water, so it is difficult to recycle. The currently reported "a method for regenerating paint waste residue (ZL1931928)" is greatly affected by the type and properties of paint waste residue, and the processing capacity is limited, which is difficult to meet the requirements of paint waste residue treatment. There are also reports of high temperature and high pressure pyrolysis, high temperature incineration and "pollution-free burial", but these are all destructive treatment methods that cannot realize resource recycling, and have high costs and the possibility of secondary pollution. There is also a report (ZL201310633439.3) on the use of acrylic/polyurethane oxygen paint waste as filler, which expands the channels for its recycling. But in general, due to the variety of paint waste, the state of recovery is very different, and it is difficult to recycle a large amount of waste, especially the production process and production line that forms a fully enclosed continuous automatic treatment, no relevant reports have been reported.

SUMMARY OF THE INVENTION

In order to realize the complete reuse of paint waste residue, the present invention provides a production process and a production line for preparing polymer resin composite solid powder from paint waste residue.

In order to achieve the above purpose of the invention, the present invention provides a production process and a production line for preparing polymer resin composite solid powder from paint waste.

A production process for preparing polymer resin composite solid powder from paint waste, characterized in that:

S1, classify the paint waste, and separate the large pieces of paint slag with a maximum external dimension greater than 30cm or a volume equivalent to it from the paint waste;

S2, evenly distribute the paint waste from S1 to the filter press system;

S3, the paint waste residue after the cloth is completed in S2 is subjected to pressure filtration; after the pressure filtration, waste water and the paint waste residue after draining are obtained;

S4, crushing the large pieces of paint slag classified in S1 and the drained paint slag obtained in S3;

S5, drying the paint waste residue after being broken in S4;

S6, superfinely pulverize the dried paint residue in S5, and collect the fineness from 50 mesh to 1000 mesh after superfine pulverization;

S7, packaging the materials obtained in S6;

All steps are carried out in a closed enclosure, the waste water obtained in S2 is collected and treated with waste water, and the waste gas obtained in S4 to 6 is collected and treated with waste gas.

Preferably, in the S2,

S201, the paint waste residue after the large pieces of paint residue are separated in S1 is initially drained through the water-permeable anti-corrosion mesh belt;

S202, evenly distributing the paint waste after preliminary draining;

S203, filter the evenly distributed paint by pressing rollers.

Preferably, in S202 in the described S2, the paint waste after preliminary draining is distributed on the material belt composed of the anti-corrosion filter cloth and the lower layer, which is composed of an anti-corrosion filter cloth, and the drained paint waste is distributed on the anti-corrosion filter cloth by a distributing machine. The central area of the cloth extends to both sides from the central area, accounting for two-thirds of the anti-corrosion filter cloth.

Preferably, in the step S203 in the S2, the pressure roller used is an automatic bias-adjusted pressure-strength extrusion pressure roller.

Preferably, in the described S4, crushing the large pieces of paint slag classified in S1 and the drained paint slag obtained in S3 includes,

S401, use a hydraulic cutting knife to roughly cut the waste residue at the cutting position, and cut it to a block with a maximum external dimension less than 30cm or a volume equivalent to it;

S402, finely cut with a hydraulic grid crushing device, and cut to a block with a maximum external dimension less than 10cm or a volume equivalent to it;

S403, use a toothed roller crusher for granulation and crushing to make it into a granular shape with a maximum external dimension less than 5mm or a volume equivalent to it;

S404, screen the crushed materials in S403, the sieved materials are transported into the silo by air flow, and the remaining materials are again subjected to S403.

Preferably, the drying of the S5 is to use a spin flash dryer to dry the material, and under the hot air of 100-260° C., the material in it is kept for 10-180 seconds.

Preferably, in the S5, the materials dried by the spin flash dryer are separated by the double-barrel cyclone separator, and then sent to the silo of the next step through the airflow conveying device, and the water vapor, organic volatile gas and A small amount of dust enters the box-type pulse dust collector with the induced air.

Preferably, in the step S6, the material processed in the step S5 is transported to the jet mill; the jet mill enters the material classifier under the action of induced wind, and the material classifier is composed of a frequency conversion classification motor and two cyclones connected in series. The composition of the feeder.

A production line for preparing polymer resin composite solid powder from paint waste, comprising an automatic feeding system, a sewage recycling treatment system, a filter press system, a crushing system, a drying system, a waste gas recovery and treatment system, and an ultrafine pulverization system that are connected in sequence. , There is a material conveying system for conveying materials between the system units. Each system unit and material conveying process are completely enclosed by the cover, and the PLC control system automatically controls the equipment operation and process parameters of the entire production line.

Preferably, the automatic feeding system is composed of a feeding robot, a bracket, a mixed overflow tank, a water-permeable anti-corrosion mesh belt, and a water receiving tank; The overflow port of the overflow tank is facing the feed end of the permeable anti-corrosion mesh belt, the discharge end of the permeable anti-corrosion mesh belt is connected to the feed end of the filter press system, and the drain end of the permeable anti-corrosion mesh belt is connected to the sewage recycling treatment system. The water inlet corresponds to;

The filter press system is composed of an automatic distributor, a high-strength anti-corrosion water-permeable mesh belt, an anti-corrosion filter cloth, an automatic bias adjustment and pressure-regulating extrusion roller, and a filtrate pool; the anti-corrosion filter cloth is arranged on the upper side of the high-strength anti-corrosion and permeable mesh belt. , the two are in close contact to form a material belt. The automatic distributor evenly distributes the paint waste on the anti-corrosion filter cloth. Several groups are arranged in pairs on the upper and lower sides of the belt; the discharge port of the filter press system is provided with a receiving hopper, and the receiving hopper corresponds to the feeding end of the crushing system; the drainage port of the filtrate tank is recycled with the sewage The water inlet of the treatment system corresponds to;

The crushing system is composed of an automatic hydraulic cutting knife, an automatic hydraulic grille crushing device, a variable-frequency speed-regulating closed-type high-angle conveyor, a self-regulating pressure toothed roller crusher, a variable-frequency speed-regulating closed belt conveyor, and an automatic drum screening device; The crushing system is also provided with a dust collector for absorbing the dust generated in the crushing process;

The drying system consists of a multi-stage temperature-adjusted gas-fired hot blast stove, a rotary flash dryer, a double-cylinder rotary feeder, and a pulse bag filter; Water vapor, organic volatiles and a small amount of dust enter the box-type pulse dust collector, and then enter the waste gas treatment system after removing the dust.

The ultrafine pulverizing system consists of a jet pulverizer, a material classifier, a single-cylinder rotary feeder, a pulse bag filter 2, and a dust-free packaging machine; the material enters the jet pulverizer and is crushed under the impact of compressed air, and then conveyed. To the material classifier, the material classifier is composed of a frequency conversion classification motor and two cyclone feeders connected in series. By controlling the frequency of the classification motor, the speed of the material entering the second rotary feeder is controlled, thereby controlling the fineness of the material. After classification, the material enters the silo and is packaged by a dust-free packaging machine, and the air is discharged after being dedusted by a pulse bag filter.

The sewage recycling system is composed of filtrate collection tank, liquid level automatic control pump, sewage tank, sewage treatment equipment, clean water tank, and liquid level automatic control flushing pump. The filtered water is mixed with the water flushing the belt filter press and then enters the filtrate collection tank. The filtrate collection tank is equipped with a liquid level gauge, which is linked with the liquid level automatic control water pump. When the liquid level in the filtrate tank is high, the sewage pump is started and the sewage pump After entering the sewage tank, the sewage entering the sewage tank is treated by the sewage treatment equipment. After reaching the standard, it enters the clean water tank. The clean water tank is equipped with a liquid level automatic flushing pump. Use water.

The waste gas treatment solvent recovery system is composed of a gas-water separator and a waste gas treatment device. The gas-water separator is composed of a heat exchanger and an oil-water separator. , The waste gas produced in the process of crushing, drying and pulverizing paint waste contains water vapor and organic volatiles such as toluene and xylene. The waste gas first enters the heat exchanger, and most of the organic volatiles such as water vapor, toluene, and xylene are condensed into liquids. After being separated by an oil-water separator, water and organic solvents are recovered and reused respectively. After the exhaust gas enters the exhaust gas treatment device for further purification, it reaches the standard high-altitude discharge.

The entire production line is completely enclosed in the cover, and the position of the inlet and outlet is negative pressure due to the ventilation of the fan.

The beneficial effects brought about by the technical solutions provided in the embodiments of the present invention are: the production line can realize the harmless, continuous and automatic operation and treatment of the regeneration and utilization of paint waste residues, the waste water generated during the operation process can be recycled, the waste gas generated can be recycled and treated, and no waste gas is produced. Secondary pollution such as waste water, waste gas, dust, etc., the process conditions and product quality are controllable, and the production efficiency is high.

Description of drawings

FIG. 1 is a schematic diagram of the overall structure of a production line according to an embodiment of the present invention.

In the figure, 1. automatic feeding system; 1.01, feeding robot; 1.02, bracket; 1.03, mixing overflow tank; 1.04, water-permeable and anti-corrosion mesh belt; 1.05, water receiving tank; 2. filter press system; 2.01, automatic distributor ; 2.02, anti-corrosion filter cloth; 2.03, high-strength anti-corrosion water-permeable mesh belt; 2.04, automatic offset adjustment pressure squeeze roller; 2.05, filtrate tank; 3, crushing system; 3.01, automatic hydraulic cutting knife; 3.02, automatic hydraulic Grid crushing device; 3.03, frequency conversion speed regulation closed type large inclination conveyor; 3.04, self-regulating pressure toothed roller crusher; 3.05, frequency conversion speed regulation closed belt conveyor; 3.06, automatic drum screening device; 3.07, dust collector; 4/6, conveying system; 4.01/6.01, self-adjusting pneumatic conveyor; 4.02/6.02, high and low material level automatic control silo; 4.03/6.03, automatic control feeding device; 5, drying system; 5.01, multi-stage tempering gas hot air Furnace; 5.02, rotary flash dryer; 5.03, double-cylinder rotary feeder; 5.04, pulse bag filter I; 7, ultra-fine grinding system; 7.01, jet mill; 7.02, material classifier; 7.03, Rotary feeder; 7.04, pulse bag filter II; 7.05, dust-free packaging machine.

Detailed ways

The embodiments of the present invention provide a production process and a production line for preparing polymer resin composite solid powder from paint waste,

S1, classify the paint waste, and separate the large pieces of paint slag with a maximum external dimension greater than 30cm or a volume equivalent to it from the paint waste;

S2, evenly distribute the paint waste from S1 to the filter press system;

S3, the paint waste residue after the cloth is completed in S2 is subjected to pressure filtration; after the pressure filtration, waste water and the paint waste residue after draining are obtained;

S4, crushing the large pieces of paint slag classified in S1 and the drained paint slag obtained in S3;

S5, drying the paint waste residue after being broken in S4;

S6, superfinely pulverize the dried paint residue in S5, and collect the fineness from 50 mesh to 1000 mesh after superfine pulverization;

S7, packaging the materials obtained in S6;

All steps are carried out in a closed enclosure, the waste water obtained in S2 is collected and treated with waste water, and the waste gas obtained in S4 to 6 is collected and treated with waste gas.

Preferably, in S2,

S201, the paint waste residue after the large pieces of paint residue are separated in S1 is initially drained through the water-permeable anti-corrosion mesh belt;

S202, evenly distributing the paint waste after preliminary draining;

S203, filter the evenly distributed paint by pressing rollers.

Preferably, in S202 in S2, the paint waste after preliminary draining is distributed on the material belt composed of the anti-corrosion filter cloth and the lower layer of the anti-corrosion filter cloth, and the paint waste after the drain is distributed on the anti-corrosion filter cloth by the distributing machine. The middle area, which extends to both sides from the middle area, accounts for two-thirds of the anti-corrosion filter cloth.

Preferably, in step S203 in S2, the pressure roller used is an automatic offset adjustment pressure extrusion pressure roller.

Preferably, in S4, crushing the large pieces of paint slag classified in S1 and the drained paint slag obtained in S3 includes,

S401, use a hydraulic cutting knife to roughly cut the waste residue at the cutting position, and cut it to a block with a maximum external dimension less than 30cm or a volume equivalent to it;

S402, finely cut with a hydraulic grid crushing device, and cut to a block with a maximum external dimension less than 10cm or a volume equivalent to it;

S403, use a toothed roller crusher for granulation and crushing to make it into a granular shape with a maximum external dimension less than 5mm or a volume equivalent to it;

S404, screen the crushed materials in S403, the sieved materials are transported into the silo by air flow, and the remaining materials are again subjected to S403.

Preferably, the drying of S5 is to use a spin flash dryer to dry the material, and under the hot air of 100-260° C., the material in it is kept for 10-180 seconds.

Preferably, in S5, the materials dried by the rotary flash dryer are separated by the double-barrel cyclone separator, and then sent to the silo of the next step through the airflow conveying device. The water vapor, organic volatile gas and a small amount of dust With the induced air entering the box-type pulse dust collector.

Preferably, in S6, the material processed in S5 is transported to the jet mill; the jet mill enters the material classifier under the action of induced wind, and the material classifier is composed of a frequency conversion classification motor and two series-connected cyclone feeders .

A production line for preparing polymer resin composite solid powder from paint waste, comprising an automatic feeding system 1, a sewage recycling treatment system, a filter press system 2, a crushing system 3, a drying system 5, a waste gas recovery and treatment system, and an ultra-fine grinding system. The system 7 is connected, and a material conveying system 6 for conveying materials is arranged between the system units. Each system unit and the material conveying process are completely enclosed by the cover body, and the PLC control system automatically realizes the operation of the equipment and process parameters of the entire production line. control.

Preferably, the automatic feeding system 1 is composed of a feeding robot 1.01, a bracket 1.02, a mixing overflow tank 1.03, a water-permeable anti-corrosion mesh belt 1.04, and a water receiving tank 1.05; In the overflow tank 1.03, the overflow port of the mixed overflow tank 1.03 is facing the feed end of the permeable anti-corrosion mesh belt 1.04, and the discharge end of the permeable anti-corrosion mesh belt 1.04 is connected to the feed end of the filter press system 2. The drain end with 1.04 corresponds to the water inlet of the sewage recycling treatment system;

The filter press system 2 is composed of automatic distributor 2.01, high-strength anti-corrosion permeable mesh belt 2.03, anti-corrosion filter cloth 2.02, automatic bias adjustment and pressure adjustment squeeze roller 2.04, and filtrate tank 2.05; The upper side of the belt 2.03 is in close contact with the two to form a material belt. The filtrate tank 2.05 is located under the material belt. The automatic distributor 2.01 evenly distributes the paint waste on the anti-corrosion filter cloth 2.02. The material belt composed of anti-corrosion water-permeable mesh belt 2.03 and anti-corrosion filter cloth 2.02 is set up in pairs on the upper and lower sides of the material belt; the discharge port of the filter press system 2 is provided with a receiving hopper, which corresponds to the feeding end of the crushing system 3; the filtrate tank The water outlet of 2.05 corresponds to the water inlet of the sewage recycling treatment system;

The crushing system 3 consists of automatic hydraulic cutting knife 3.01, automatic hydraulic grille crushing device 3.02, frequency conversion speed regulation closed type large inclination conveyor 3.03, self pressure regulating tooth roller crusher 3.04, frequency conversion speed regulation closed belt conveyor 3.05, automatic trommel screen It is composed of sub-device 3.06; the crushing system 3 is also provided with a dust collector 3.07 for absorbing the dust generated in the crushing process;

The drying system 5 is composed of a multi-stage temperature-adjusted gas hot blast stove 5.01, a rotary flash dryer 5.02, a double-cylinder rotary feeder 5.03, and a pulse bag filter 5.04; the hot air generated by the multi-stage temperature-adjusted gas hot blast stove 5.01 enters the rotary flash Dryer 5.02, the hot air enters the pulse bag filter 1 5.04 with water vapor, organic volatiles and a small amount of dust, and after removing the dust, it enters the waste gas treatment system; the paint residue material passes through the rotary flash dryer 5.02, the double-cylinder rotary feeder 5.03 Enter the jet mill system 7.

Ultrafine crushing system 7 consists of jet mill 7.01, material classifier 7.02, single-cylinder rotary feeder 7.03, pulse bag filter 2 7.04, and dust-free packaging machine 7.05; the material enters the jet mill 7.01 and is impacted by compressed air. After being crushed under the action, it is transported to the material classifier 7.02. The material classifier 7.02 is composed of a frequency conversion classification motor and two cyclone feeders connected in series. By controlling the frequency of the classification motor, the material entering the second rotary feeder is controlled. speed, thereby controlling the fineness of the material. After classification, the material enters the silo and is packaged with a dust-free packaging machine 7.05, and the air is discharged after being dedusted by a pulse bag filter 2 7.04.

The sewage recycling system is composed of filtrate collection tank, liquid level automatic control pump, sewage tank, sewage treatment equipment, clean water tank, and liquid level automatic control flushing pump. The filtered water is mixed with the water flushing the belt filter press and then enters the filtrate collection tank. The filtrate collection tank is equipped with a liquid level gauge, which is linked with the liquid level automatic control water pump. When the liquid level in the filtrate tank is high, the sewage pump is started and the sewage pump After entering the sewage tank, the sewage entering the sewage tank is treated by the sewage treatment equipment. After reaching the standard, it enters the clean water tank. The clean water tank is equipped with a liquid level automatic flushing pump. Use water.

The waste gas treatment solvent recovery system is composed of a gas-water separator and a waste gas treatment device. The gas-water separator is composed of a heat exchanger and an oil-water separator. , The waste gas produced in the process of crushing, drying and pulverizing paint waste contains water vapor and organic volatiles such as toluene and xylene. The waste gas first enters the heat exchanger, and most of the organic volatiles such as water vapor, toluene, and xylene are condensed into liquids. After being separated by an oil-water separator, water and organic solvents are recovered and reused respectively. After the exhaust gas enters the exhaust gas treatment device for further purification, it reaches the standard high-altitude discharge.

The entire production line is completely enclosed in the cover, and the position of the inlet and outlet is negative pressure due to the ventilation of the fan.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection of the present invention. within the range.

Claims (9)

1. a process for preparing polymer resin composite solid powder from paint waste residue is characterized in that, S1, classifying the paint waste, and separating the large pieces of paint slag from the paint waste; the large piece of paint slag is the block-shaped paint slag whose outer dimension is the longest and the length is greater than or equal to 30cm; S2, evenly distribute the paint waste from S1 to the filter press system; S3, the paint waste residue after the cloth is completed in S2 is subjected to pressure filtration; after the pressure filtration, waste water and the paint waste residue after draining are obtained; S4, crushing the large pieces of paint slag classified in S1 and the drained paint slag obtained in S3; S5, drying the paint waste residue after being broken in S4; S6, carry out ultra-fine pulverization of the dried paint residue in S5, and collect the fineness from 50 mesh to 1000 mesh after ultra-fine pulverization; S7, packaging the materials obtained in S6; All steps are carried out in a closed enclosure, the waste water obtained in S2 is collected and treated with waste water, and the waste gas obtained in S4 to 6 is collected and treated with waste gas. 2. the production technology of polymer resin composite solid powder prepared by paint waste residue according to claim 1, is characterized in that, in described S2, S201, the paint waste residue after the large pieces of paint residue are separated in S1 is initially drained through the water-permeable anti-corrosion mesh belt; S202, evenly distributing the paint waste after preliminary draining; S203, filter the evenly distributed paint by pressing rollers. 3. the paint waste residue according to claim 2 prepares polymer resin composite solid powder production technology, it is characterized in that, S202 in described S2, the paint waste residue after preliminary draining is distributed in, upper layer is anti-corrosion filter cloth, lower layer is On the material belt composed of the anti-corrosion water-permeable mesh belt, the drained paint residue is distributed in the middle area of the anti-corrosion filter cloth through the distributor, and the middle area extends to both sides, accounting for two-thirds of the anti-corrosion filter cloth. 4 . The production process for preparing polymer resin composite solid powder from paint waste according to claim 2 , wherein, in step S203 in the S2 , the pressure roller used is an automatic bias-adjusted pressure-strength extrusion pressure roller. 5 . 5. paint waste according to claim 1 prepares polymer resin composite solid powder production technology, it is characterized in that, in described S4, the paint waste after the large piece of paint slag classified S1 and the draining water obtained in S3 is broken include, S401, use a hydraulic cutting knife to roughly cut the waste residue at the cutting position; cut the waste residue into block-shaped paint waste with the longest dimension and length less than or equal to 30cm; S402, then use the hydraulic grid crushing device to finely cut the waste residue after rough cutting in S401; cut the waste residue into the block-shaped paint waste residue whose outer dimension is the longest and the length is less than or equal to 10cm; S403, use a toothed roller crusher for granulation and crushing, and crush the waste residue into granular paint waste with the longest dimension and the longest length less than or equal to 5mm; S404 , screening the crushed materials in S403 , the sieved materials are transported into the silo by air flow, and the remaining materials are subjected to S403 again. 6. The production process for preparing polymer resin composite solid powder from paint waste according to claim 1, wherein the drying of the S5 is to use a spin flash dryer to dry the material, and under the hot air of 100-260 ℃ , so that the material in it stays for 10-180 seconds. 7. The production process for preparing polymer resin composite solid powder from paint waste residues according to any one of claims 1-6, characterized in that, in the S5, the material dried by the spin flash dryer is separated by a double-cylinder cyclone After the separator is separated, it is sent to the silo of the next step through the airflow conveying device, and the water vapor, organic volatile gas and a small amount of dust enter the box-type pulse dust collector with the induced air. 8. the production technology of polymer resin composite solid powder prepared by paint waste residue according to claim 1, is characterized in that, described S6 is, the material that described S5 is processed is transported to jet mill; Under the action of the wind, it enters the material classifier, which is composed of a frequency conversion classification motor and two series-connected cyclone feeders. 9. A production line for preparing polymer resin composite solid powder from paint waste, characterized in that it comprises an automatic feeding system, a sewage recycling treatment system, a filter press system, a crushing system, a drying system, a waste gas recovery and treatment system, an ultra-high The fine crushing system is connected. A material conveying system for conveying materials is set between the system units. Each system unit and material conveying process are completely enclosed by the cover. The PLC control system automatically controls the operation of the entire production line and the process parameters. control; The automatic feeding system is composed of a feeding robot, a bracket, a mixed overflow tank, a water-permeable anti-corrosion mesh belt, and a water receiving tank; the feeding robot pours the paint waste into the mixed overflow tank with the bracket as a supporting point, and the mixed overflow tank The overflow port is facing the feed end of the permeable anti-corrosion mesh belt, the discharge end of the permeable anti-corrosion mesh belt is connected to the feed end of the filter press system, and the drain end of the permeable anti-corrosion mesh belt is connected to the water inlet of the sewage recycling treatment system. correspond; The filter press system is composed of an automatic distributor, a high-strength anti-corrosion water-permeable mesh belt, an anti-corrosion filter cloth, an automatic bias adjustment and pressure-regulating extrusion roller, and a filtrate pool; the anti-corrosion filter cloth is arranged on the upper side of the high-strength anti-corrosion and permeable mesh belt. The two are in close contact to form a material belt. The filtrate pool is located under the material belt. The automatic distributor evenly distributes the paint waste on the anti-corrosion filter cloth. , The material belt composed of anti-corrosion filter cloth is arranged in pairs on the upper and lower sides; the discharge port of the filter press system is provided with a receiving hopper, and the receiving hopper corresponds to the feeding end of the crushing system; the drainage of the filtrate tank The mouth corresponds to the water inlet of the sewage recycling treatment system; The crushing system is composed of an automatic hydraulic cutting knife, an automatic hydraulic grille crushing device, a variable-frequency speed-regulating closed-type high-angle conveyor, a self-regulating pressure toothed roller crusher, a variable-frequency speed-regulating closed belt conveyor, and an automatic drum screening device; The crushing system is also provided with a dust collector for absorbing the dust generated in the crushing process; The drying system consists of a multi-stage temperature-adjusted gas hot blast stove, a rotary flash dryer, a double-cylinder rotary feeder, and a pulse bag filter; It consists of a pulse dust collector and a waste gas treatment system; the material passage consists of a rotary flash dryer, a double-cylinder rotary unloader, and a subsequent ultra-fine pulverization system. The ultrafine pulverization system consists of an air pulverizer, a material classifier, a single-cylinder rotary feeder, a pulse bag filter, and a dust-free packaging machine; the material classifier consists of a frequency conversion grading motor and two series-connected cyclone feeders. ; The sewage recycling system is composed of filtrate collection tank, liquid level automatic control pump, sewage tank, sewage treatment equipment, clean water tank, and liquid level automatic control flushing pump; The waste gas recovery and treatment system is composed of a gas-water separator and a waste gas treatment device. The gas-water separator is composed of a heat exchanger and an oil-water separator. The gas passage of the device waste gas is connected to the air inlet of the heat exchanger. The liquid outlet is connected to the oil-water separator, and the gas outlet is connected to the waste gas treatment device; The whole production line is completely enclosed in the cover, and the suction fans that can form negative pressure are installed at the inlet and outlet positions.

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