CN102744241B - Shaftless spiral vertical-type continuous separation treatment system of aluminum-plastic compound package material - Google Patents

Abstract

The invention provides a vertical continuous separation processing system for aluminum-plastic composite packaging materials using a shaftless spiral. The system includes a separation reaction device for chemical separation of aluminum-plastic composite packaging materials, and a vertical separation and drying device for physical separation of aluminum-plastic composite packaging materials after chemical separation, wherein: the separation reaction device is set The reaction screw and the discharge screw are shaftless screw structures; the inner cylinder of the vertical separation and drying device is provided with a rotating shaft, and a plurality of sickle-shaped blades are intermittently arranged on the rotating shaft. The vertical continuous separation processing system for the aluminum-plastic composite packaging material provided by the invention adopts the shaftless spiral, which can effectively realize the continuous separation processing of the aluminum-plastic composite packaging material, and has high aluminum-plastic separation processing capacity.

Description

Vertical continuous separation processing system for aluminum-plastic composite packaging materials using shaftless spiral

technical field

The invention belongs to material separation technology, in particular to a vertical continuous separation processing system for aluminum-plastic composite packaging materials using a shaftless spiral that can carry out industrialized continuous separation processing on aluminum-plastic composite packaging materials.

Background technique

Paper-plastic-aluminum composite packaging material is a common packaging material, which is widely used in packaging such as milk and soft drinks. With the improvement of people's awareness of environmental protection and the shortage of raw materials, the recycling of paper-plastic composite packaging has become very necessary. When recycling paper-plastic composite packaging, the paper base is usually separated, and then the remaining The material formed by aluminum foil and plastic is then separated.

Among them, the recycling technology of paper-plastic-aluminum composite packaging waste mainly includes two types, one is direct regeneration technology, that is, the whole paper-plastic-aluminum composite packaging is crushed and processed to generate new raw materials; the other is separation and recycling technology, that is, paper The three materials in the plastic-aluminum composite packaging are separated and recycled separately. Compared with separation and recycling technology, direct recycling technology mainly produces extruded plastic wood and color board, which cannot effectively recycle pulp, plastic and aluminum, and does not reflect the self-value of paper fiber, aluminum foil and plastic.

Separation and regeneration technology can be divided into two parts according to the separation process, the first is the separation of paper and aluminum-plastic, that is, pulp separation technology; the second is the separation of aluminum foil and plastic, that is, aluminum-plastic separation technology. The separation of paper and aluminum-plastic can be realized by the method of hydraulic pulping. This technology is relatively mature and widely used. The separation of the aluminum foil and the plastic of the aluminum-plastic composite packaging material after the pulp is removed is the key and difficult point of the separation and regeneration technology.

At present, when separating aluminum-plastic composite packaging materials formed by compounding aluminum foil and plastic, wet separation technology is usually used, that is, the aluminum-plastic composite packaging materials are soaked in a separating agent, and the adhesion between the layers is destroyed by dissolution or swelling. This process can also be called the chemical separation reaction of aluminum and plastic; and then dry and separate to realize the physical separation of aluminum and plastic. For this reason, the prior art proposes a system for realizing the continuous separation of aluminum-plastic composite packaging materials, including a soaking separator, a centrifugal dryer and a drum centrifugal screening machine, wherein the soaking separator is provided with a shaft screw to convey materials, The separation process includes the following steps: (1) Put the aluminum-plastic composite packaging material into the soaking separator filled with a separating agent, undergo chemical separation, and transfer it to the centrifugal dryer through a shaft screw; (2) Centrifugal drying The dryer can dry the chemically separated materials fed in, remove the separating agent, and transfer the dried materials to the centrifugal screening machine; (3) The centrifugal screening machine uses the high-speed rotating central rotor to , separate the aluminum foil and plastic, and discharge them to the plastic granulator and the vortex separator respectively, and the vortex separator can be connected with the aluminum smelting device to obtain aluminum.

However, in the existing continuous separation system, in the immersion separator that uses a shafted screw for material transmission, due to the limitation of the shafted screw's own structure, the diameter and length of the shafted screw cannot be made too large, which greatly limits the separation. The separation and processing capacity of the material by the device makes the material processing capacity of the entire separation system poor; and the flexibility of the shafted screw is poor, which is prone to material clogging and affects the material separation and processing effect of the entire separation system; in addition, the existing separation system Among them, when the chemically separated material is dried by a centrifugal dryer, in order to avoid material clogging and aluminum foil detaching from the plastic, the maximum speed and length of the centrifugal dryer are limited, so that the drying speed of the centrifugal dryer is limited. The efficiency and processing capacity are low, and the loss of aluminum chips and separating agent is high; when the material after centrifugal drying is physically separated through the centrifugal screening machine, in order to reduce the clogging failure rate, the centrifugal screening machine needs to use a lower speed , which greatly reduces the separation effect and processing capacity of aluminum and plastics. In addition, in order to recover aluminum chips separately, a large amount of high-pressure water needs to be sprayed in the centrifugal screening machine, resulting in an increase in the cost of subsequent wastewater treatment. Generally speaking, the existing continuous separation process is not easy to realize industrialized large-scale continuous separation treatment of aluminum-plastic composite packaging materials.

Contents of the invention

The invention provides a vertical continuous separation processing system for aluminum-plastic composite packaging materials using a shaftless spiral, which can overcome the defects of poor material processing capacity, easy material blockage, and high waste water treatment cost existing in the existing separation system, and can effectively improve Material handling capacity, reduce the amount of wastewater generated.

The invention provides a vertical continuous separation processing system for aluminum-plastic composite packaging materials using a shaftless spiral, including a separation reaction device for chemically separating aluminum-plastic composite packaging materials, and a chemically separated aluminum-plastic composite packaging material. Vertical separation and drying device for physical separation treatment,

in:

The separation reaction device includes a separator with a cavity, and a reaction screw and a discharge screw arranged in the cavity of the separator;

The separator includes a reaction section and a discharge section, the reaction section is provided with a feed port away from the feed end of the discharge section, and the discharge end of the discharge section is provided with a discharge port, the height of the discharge end is higher than the height of the feed end;

The reaction screw is set in the cavity of the reaction section, the discharge screw is set in the cavity of the discharge section, and the discharge screw is vertically arranged relative to the reaction screw;

Both the reaction screw and the discharge screw are shaftless helical structures, and one end of the discharge screw and the reaction screw is respectively provided with a motor;

The vertical separation and drying device comprises:

A vertically arranged cylinder, the cylinder includes an inner cylinder and an outer cylinder with a gap, the wall of the inner cylinder is provided with a screen hole, and the lower end of the cylinder is provided with a feed bin, so A first feed port is provided at the feed bin, and the first feed port is connected to the discharge port on the separation reaction device;

A position close to the lower end of the outer cylinder is provided with a first discharge port, and a position close to the upper end of the cylinder is opened on the outer cylinder and a hole penetrating through the outer cylinder and the inner cylinder. The second discharge port, the first discharge port is used to discharge the aluminum foil and the separating agent mixture after the physical separation treatment, and the second discharge port is used to discharge the plastic after the physical separation treatment;

A rotating shaft is arranged in the inner cylinder, and a plurality of sickle-shaped blades are intermittently arranged on the rotating shaft, and the plurality of sickle-shaped blades are spirally distributed; the lower end of the rotating shaft goes deep into the feeding bin, and the Continuous helical blades are provided on the part of the rotating shaft that goes deep into the feed bin; the upper end of the cylinder is provided with a motor connected to the rotating shaft.

The vertical continuous separation processing system for aluminum-plastic composite packaging materials provided by the present invention uses a shaftless spiral separation reaction device to carry out chemical separation treatment on aluminum-plastic composite packaging materials, and through the vertical separation process provided with sickle-shaped blades The type separation and drying device can dry and separate the chemically separated aluminum-plastic composite packaging materials, which can effectively improve the separation and treatment capacity of aluminum-plastic composite packaging materials, and can effectively avoid material clogging during the processing of aluminum-plastic composite packaging materials. problems and reduce the amount of waste water produced.

Description of drawings

Fig. 1 is a schematic structural view of a vertical continuous separation processing system for aluminum-plastic composite packaging materials provided by an embodiment of the present invention using a shaftless spiral;

Fig. 2 A is the structural representation of separation reaction device in Fig. 1;

Fig. 2B is a sectional view of A-A direction in Fig. 2A;

Figure 2C is a cross-sectional view of B-B direction in Figure 2A;

3A is a schematic structural view of the vertical separation and drying device in FIG. 1;

Fig. 3B is a partially enlarged schematic diagram of A in Fig. 3A;

Fig. 3C is a cross-sectional enlarged schematic view of the rotating shaft and the sickle-shaped blade in Fig. 3A;

FIG. 4 is a schematic structural diagram of a specific application of an embodiment of the present invention.

Detailed ways

In view of the problems of poor material separation and treatment capacity, easy material clogging and large waste water generation in the existing separation system, the present invention provides a vertical continuous separation treatment system for aluminum-plastic composite packaging materials using a shaftless spiral type. By adopting a separation reaction device with a shaftless spiral structure and a vertical separation and drying device that can dry and separate the chemically separated aluminum-plastic composite packaging materials at the same time, the processing efficiency of aluminum-plastic composite packaging materials can be effectively improved. Continuity, reduce the loss of separating agent and aluminum chips, reduce the amount of waste water, and improve the separation and treatment capacity of aluminum-plastic composite packaging materials. The technical solution of the present invention will be described in detail below with specific examples.

Fig. 1 is a schematic structural view of a vertical continuous separation treatment system for aluminum-plastic composite packaging materials provided by an embodiment of the present invention using a shaftless spiral; Fig. 2A is a schematic structural view of the separation reaction device in Fig. 1; Fig. 2B is a direction A-A in Fig. 2A Figure 2C is a cross-sectional view of B-B in Figure 2A; Figure 3A is a schematic structural view of the vertical separation and drying device in Figure 1; Figure 3B is a partially enlarged schematic view of A in Figure 3A; Figure 3C is a rotating shaft in Figure 3A and enlarged cross-sectional schematic diagrams of sickle-shaped blades. As shown in Figure 1, the separation system of this embodiment includes a separation reaction device 10 and a vertical separation and drying device 20, wherein the separation reaction device 10 is used to chemically separate the aluminum-plastic composite packaging material, and the aluminum-plastic composite packaging material The material is soaked in the separating agent to carry out chemical separation reaction, and the aluminum and plastic in it are separated; the vertical separation and drying device 20 can be used to dry and physically separate the chemically separated aluminum-plastic composite packaging material processed by the separation reaction device 10. Separation treatment, the aluminum foil and the plastic are physically separated, and the plastic is deacidified at the same time. The plastic discharged from the vertical separation and drying device 20 can be directly made into a plastic product, and the discharged aluminum foil can be made into a plastic product after deacidification. Aluminum scrap products, so as to realize the separation of aluminum-plastic composite packaging materials.

In order to facilitate the understanding of the technical solution of the embodiment of the present invention, the separation reaction device 10 and the vertical separation and drying device 20 in this embodiment will be described respectively below.

Separation reaction device 10

In this embodiment, as shown in Figures 2A-2C, the separation reaction device 10 may specifically include a separator 101, a reaction screw 102 and a discharge screw 103, wherein the separator 101 has a hollow cavity, and the separator 101 includes a reaction section 1011 and a discharge section 1012, the reaction section 1011 is provided with a feed port 10111 away from the feed end A1 of the discharge section 1012, and the discharge section 1012 is provided with a Discharge port 10121 (see Figure 2C), the height of the discharge end A2 is higher than the height of the feed end A1; the reaction screw 102 is set in the cavity of the reaction section 1011, and the discharge screw 103 is set in the discharge section In the cavity of 1012, and the discharge screw 103 is vertically arranged relative to the reaction screw 102; the reaction screw 102 and the discharge screw 103 are shaftless spiral structures as shown in Figure 2A, and are respectively installed in the reaction section 1011 and the discharge section 1012 The specific installation structure is similar to that of the traditional shaftless helical structure, and will not be repeated here; one end of the discharge helix 103 and the reaction helix 102 are respectively provided with a motor 104 that drives the helical structure to rotate. In this embodiment, the cavity of the reaction section 1011 of the separation reaction device 10 can be filled with a separating agent to perform chemical separation treatment on the aluminum-plastic composite packaging material. Specifically, the rotating motion of the reaction screw 102 in the reaction section can be used to separate the The aluminum-plastic composite packaging material input from the feed port 10111 is conveyed to the discharge screw 103. During the conveying process, the aluminum-plastic composite packaging material can be chemically separated under the action of the separating agent filled in the reaction section 1011, and undergoes chemical separation treatment. The final aluminum-plastic composite packaging material can be discharged from the discharge port 10121 through the discharge screw 103.

In this embodiment, when the aluminum-plastic composite packaging material is separated, the reaction section 1011 of the separator 101 can be filled with a separating agent; It can be continuously put into the separator 101 from the feed port 10111 of the reaction section 1011; the whole piece of aluminum-plastic composite packaging material put into the separator 101 can be in the reaction section 1011, with the rotation of the reaction screw 102, one side The discharge end of the reaction section 1011 moves close to the end of the discharge screw 103, while chemically separating and reacting with the separating agent in the reaction section 1011, and the separating agent does not move together with the aluminum-plastic composite packaging material and always exists in the reaction section 1011 After the aluminum-plastic composite packaging material after chemical separation enters the discharge section 1012, it can flow to the discharge port 10121 arranged at the end of the discharge section 1012 along with the rotation of the discharge screw 103 arranged in the discharge section 1012. movement, and discharged from the discharge port 10121, at the same time, the separating agent entrained by the aluminum-plastic composite packaging material flows back into the reaction section 1011 from the gap between the discharge screw 103 and the cavity of the discharge section 1012; The chemically separated aluminum-plastic composite packaging material discharged from port 10121 can enter the vertical separation and drying device 20 as shown in Figure 1, and the aluminum-plastic composite packaging material after chemical separation is processed by the vertical separation and drying device 20. The material is dried and separated to obtain physically separated aluminum foil and plastic. The specific realization process will be described in detail below.

In the separation reaction device 10 of the present embodiment, the reaction screw 102 and the discharge screw 103 for conveying materials are both shaftless helical structures, so that the shaftless screw can have better flexibility when making, and it is better for the screw. The requirement of coaxiality is not high, so that the length and diameter of the shaftless helix can be made larger, especially for the reaction helix 102, because the reaction helix 102 can be made long enough and the diameter is large enough, the material it conveys is just The more, and there will be no material clogging, which can effectively improve the material handling capacity. It can be seen that, compared with the separator using the axial spiral in the existing separation system, due to the limitation of the axial spiral structure, the axial spiral has poor toughness, and the requirements for the coaxiality of the spiral are extremely high, so that the axial spiral The diameter and length of the cylinder cannot be made too large, which seriously affects the material separation and processing capacity, and is prone to clogging. However, the separation system of this embodiment uses a shaftless spiral structure for material transmission, which can effectively improve the material separation and processing capacity, and It is not easy to produce material clogging, thereby improving the material separation and processing capacity of the entire separation system.

In this embodiment, in order to ensure the chemical separation effect of the aluminum-plastic composite packaging material in the reaction section 1011, the shell of the reaction section 1011 can be a double-layer shell with a gap between the shells and close to the reaction section. The inner layer of the cavity of 1011 is a heat-conducting shell layer. In this way, when the aluminum-plastic composite packaging material is separated, water vapor can be passed through the gap of the double-layer shell to ensure that the separation agent in the reaction section 1011 The temperature can be kept in a certain temperature range to improve the chemical separation effect of aluminum-plastic composite packaging materials. In practical applications, the entire separator 101 can be integrally formed, and the outer shell can adopt a stainless steel double-layer jacket structure. In this way, when separating aluminum-plastic composite packaging materials, the separator can be ensured by passing water vapor in the jacket. The temperature in the cavity is 101 to ensure the separation effect of aluminum-plastic composite packaging materials. Those skilled in the art can understand that the shell of the double-layer structure can be made of stainless steel or other materials. For example, the outer layer can be a non-wear-resistant, corrosion-resistant and heat-insulating material, and the inner layer can be made of wear-resistant, corrosion-resistant, and heat-conducting materials. The shell of the double-layer structure of the material, in this way, can avoid the harm to the external environment, especially the operator, due to the water vapor passing through the shell of the separator, improve the safety of the separation device, and can also reduce the material of the shell of the separator. cost.

Those skilled in the art can understand that, in addition to passing water vapor to ensure the temperature of the separating agent in the reaction section, other high-temperature liquids or gases may pass through the above-mentioned double-layer shell, which is not particularly limited in this embodiment.

In the separation reaction device 10 of the present embodiment, as shown in Fig. 2A-Fig. 2C, two reaction spirals 102 are arranged in the reaction section 1011, and two discharge spirals 103 are also arranged in the discharge section 1012, and the discharge spirals 103 and the reaction helix 102 are arranged oppositely.

Specifically, as shown in Figures 2A-2C, in this embodiment, two reaction screws 102 are arranged in parallel in the cavity of the reaction section 1011, and two discharge screws 103 are respectively arranged opposite to the two reaction screws 102, and the reaction The angle between the rotation axes of the spiral 102 and the discharge screw 103 is 90°, the angle between the rotation axes of the two discharge spirals 103 is set to 120°, and the angle with the vertical line is 60° . The setting of the reaction screw and the discharge screw can ensure that the chemically separated materials conveyed from the reaction section 1011 can be better discharged with the discharge screw 103 in the discharge section 1012, and facilitate the reaction drive motor and discharge drive. The setting of motor; Simultaneously, when separating reaction device 10 work, only need reaction screw 102 be soaked in the separating agent that is full of in reaction section 1011, and discharge screw 103 then need not be soaked in separating agent, thereby avoids by discharging The material discharged from the port carries a large amount of separating agent, thereby saving the amount of separating agent used. It can be seen that by setting the relative positions of the discharge screw 103 and the reaction screw 102, the timely processing of the discharge screw 103 on the materials delivered by the reaction screw 102 can be effectively improved, and the accumulation of materials at the end of the discharge screw 103 can be avoided.

In this embodiment, the cavity of the reaction section 1011 may include two U-shaped grooves 10112, and the sides of the two U-shaped grooves communicate with each other without intermediate cavity walls; Type groove 10112. It can be seen that the setting of the two U-shaped grooves 10112 can make the two reaction helices 102 work in each groove, reduce the mutual interference between the two reaction helices 102, and improve the convenience of installation of the reaction helix 102. And the reliability and stability of the work; at the same time, in the case of improving the material handling capacity, it can also reduce the material consumption of the separation device and reduce the space occupied by the separation device.

In this embodiment, as shown in Fig. 2A and Fig. 2C, the discharge section 1012 may include a first discharge section 10122 and a second discharge section 10123 which are set independently of each other, and the first discharge section 10122 and the second discharge section 10123 are arranged vertically relative to the reaction section 1011 respectively, and the two discharge screws 103 are respectively arranged in the cavity of the first discharge section 10122 and the cavity of the second discharge section 10123, and the discharge screw 103 is vertically arranged relative to the reaction screw 102 . Those skilled in the art will understand that the ends of the first discharge section 10122 and the second discharge section 10123 away from the reaction screw 102 are respectively provided with discharge ports, so that the materials discharged with the discharge screw 103 can be discharged from each discharge section respectively. In this way, the chemically separated aluminum-plastic composite packaging materials discharged from each outlet can be sent to the vertical separation and drying device for physical separation treatment, thereby improving the chemical treatment efficiency of the separation reaction device 10.

In this embodiment, in order to improve the stability of the shaftless screw, and the material can better move with the screw, a reaction drive motor can be provided at the end of the reaction screw 102 away from the feed inlet, that is, at the end close to the discharge screw 103. ; The end of the discharge screw 103 close to the discharge port, that is, the end far away from the reaction screw 102, is provided with a discharge drive motor. In this way, the reaction drive motor is arranged at the discharge end of the reaction screw, and the discharge drive motor is arranged at the discharge end of the discharge screw, which can effectively improve the ability of the shaftless screw to transport materials.

Vertical separation and drying device 20

In this embodiment, the vertical separation and drying device 20 can dry and separate the aluminum-plastic composite packaging material after chemical separation treatment. Specifically, as shown in Figures 3A-3C, the separation treatment system of this embodiment The vertical separation and drying device 20 in the above can be a vertical structure, including a vertical cylinder 201, a rotating shaft 202, a feed bin 203 and a motor 204, wherein the cylinder 201 includes an inner cylinder 2011 and an outer cylinder 2012 , there is a gap between the inner cylinder 2011 and the outer cylinder 2012, and the wall of the inner cylinder 2011 is provided with a screen hole (not shown in the figure), that is, the outer wall of the inner cylinder 2011 can be composed of a screen; A rotating shaft 202 is arranged in the cavity of the inner cylinder 2011, and a plurality of sickle-shaped blades 2021 are intermittently arranged on the rotating shaft 202, and the plurality of sickle-shaped blades 2021 are spirally distributed from bottom to top; the lower end of the cylinder 201 is provided with a feeding bin 203, the lower end of the rotating shaft 202 goes deep into the feeding bin 203, and the rotating shaft part of the rotating shaft 202 going deep into the feeding bin 203 is provided with a continuous spiral blade 2022; on the outer cylinder 2012, a first Discharge port 2013, on the cylinder body 201, a second discharge port 2014 penetrating through the outer cylinder body 2012 and the inner cylinder body 2011 is opened at a position close to the upper end of the cylinder body 201, and the feed bin 203 is provided with a first feed Port 2031, the first feed port 2031 is connected with the discharge port 10121 on the separation reaction device 10 among Fig. 1-Fig. It is connected with the rotating shaft 202 and is used to drive the rotating shaft 202 to work.

In this embodiment, the aluminum-plastic composite packaging material processed by the separation reaction device 10 can be directly sent to the vertical separation and drying device 20, and enters the vertical separation and drying device 20 from the feeding bin 203 independently provided on the vertical separation and drying device 20. In the type separation and drying device 20; by controlling the motor 204 to drive the rotating shaft 202 to rotate, the material entering the feed bin 203 can be sucked between the continuous helical blades 2022, and sent to the inner cylinder 2011 along with the continuous helical blades 2022; In the inner cylinder 2011, the aluminum foil in the material will be crushed and peeled off under the impact of the sickle-shaped blades 2021 arranged intermittently. enters the gap between the inner cylinder 2011 and the outer cylinder 2012, and finally falls to the first discharge port 2013, and is discharged from the first discharge port 2013, and the plastic is generally in the shape of a whole piece or a large volume , these plastics will be discharged from the second discharge port 2014 provided on the upper part of the cylinder 201, so as to realize the physical separation of aluminum and plastic. In the process of physical separation of aluminum and plastic, the centrifugal force generated by the rotation of the rotating shaft 202 can remove the separating agent on the plastic at the same time, and carry out acid removal treatment on the plastic, and the released separating agent can be discharged from the first discharge port 2013 together with the aluminum chips. These separating agents can be recycled to reduce the consumption of separating agents and waste water treatment.

In this embodiment, in order to achieve a better physical separation effect of aluminum and plastic, as shown in Figure 3A and Figure 3C, the length d of the sickle-shaped blade 2021 can be 10cm-15cm, and the height h of the sickle-shaped blade 2021 can be 5cm, In addition, the axial angle a between the sickle-shaped blades 2021 and the rotating shaft 202 is 75°, so that a plurality of sickle-shaped blades 2021 arranged at intervals are distributed in a spiral shape on the rotating shaft 202 as a whole. Through experiments, the setting of the above-mentioned sickle-shaped blade 2021 can make the aluminum-plastic physical separation rate of the aluminum-plastic composite packaging material after chemical separation reach 99.3%, and the drying degree of plastic can reach 95.5%, so that the separated plastic can be directly processed. Plastic pellets are made into plastic products for sale or use.

In this embodiment, in order to improve the quality of the aluminum chips after the physical separation of aluminum and plastic, that is, the purity of the aluminum chips is higher, the diameter of the sieve hole on the wall of the inner cylinder 2011 can be set to 3mm-5mm. After testing, vertical separation When the drying device is working, the diameter of the plastic produced during the drying process is generally greater than 5mm. Therefore, when the diameter of the screen hole is within this size range, it can effectively prevent the plastic from being mixed with aluminum chips, and ensure that all the aluminum chips are discharged from the screen hole. .

In this embodiment, since the aluminum-plastic composite packaging material entering the vertical separation and drying device 20 is generally in the shape of a large area, in order to prevent the aluminum-plastic composite packaging material from winding the rotating shaft 202 in the vertical separation and drying device 20, The diameter d1 of the rotating shaft 202 may be set to be equal to or greater than 20 cm. In this way, in the process of drying and separating the materials, the winding of the entire piece of materials on the rotating shaft 202 is avoided.

In this embodiment, the above-mentioned feeding bin 203 and the cylinder body 201 can be integrally formed, or can be formed separately and assembled together. Specifically, as shown in FIG. 3A , the feeding bin 203 and the cylinder body 201 are integrated in this embodiment. Forming, the transition point between the sickle-shaped blade 2021 and the continuous spiral blade 2022 is located at the feed inlet of the feed bin 203; meanwhile, the side wall of the feed bin 203 and the rotating shaft 202 can also include an outer cylinder, by changing The distance that the outer cylinder penetrates into the feeding bin can adjust the separation and drying processing capacity of the vertical separation and drying device.

In this embodiment, the vertical separation and drying device 20 can perform continuous and efficient separation when separating aluminum and plastic, and recycle aluminum chips and plastics separately. At the same time, the plastic can be dried and detached during the separation process. Acid treatment removes the separating agent in the plastic, so that the released separating agent can be discharged together with aluminum chips and can be recycled, thereby reducing the waste of separating agent.

In this embodiment, as shown in Figures 1-3C, in order to process the aluminum chips after physical separation, the separation system can also be provided with a settling centrifuge 30 and a vortex separator 40, wherein the settling centrifuge 30 The feed port of the feed port can be connected with the first discharge port 2013 of the vertical separation and drying device 20, and is used for deacidifying the aluminum foil discharged from the vertical separation and drying device 20, that is, removing the separating agent therein; The separator 40 is connected with the solid phase outlet of the decanter centrifuge 30, and is used to remove the pulp that may exist in the aluminum foil. Both the decanter centrifuge 30 and the vortex separator 40 described in this embodiment can use traditional equipment, and their specific implementation will not be repeated here.

In this embodiment, as shown in Figures 1-3C, the aluminum-plastic composite packaging material entering from the feed inlet 10111 of the separation reaction device 10 can be conveyed to the discharge port 10121 by a shaftless screw in the separation reaction device 10, And complete the chemical separation reaction with the separating agent in the conveying process, separate the aluminum foil from the plastic, and complete the chemical separation of the aluminum-plastic composite packaging material; the chemically separated aluminum-plastic composite packaging material will be directly discharged from the discharge port 10121 Enter the first feed port 2031 of the vertical separation and drying device 20, and under the drive of the rotating shaft of the sickle-shaped blade arranged in the vertical separation and drying device 20, the physical separation of aluminum and plastic is realized, and the separated aluminum scrap and plastic Discharge from the first discharge port 2013 and the second discharge port 2014 of the vertical separation and drying device 20 respectively. Meanwhile, in the process of physical separation of aluminum and plastic, the separating agent in the aluminum-plastic composite packaging material will also be discharged together with the aluminum chips. Discharged from the first discharge port 2013, thereby realizing the deacidification treatment of plastics; the plastics discharged from the second discharge port 2014 have been deacidified and can be directly packaged or processed after simple rinsing Packing is carried out to obtain the final plastic product; the aluminum scrap and the separating agent discharged from the first discharge port 2013 can be deacidified again to separate the separating agent from the aluminum scrap to obtain the required aluminum scrap, and at the same time, The removed separating agent can be reused.

In this embodiment, the shaftless screw is set in the separation reaction device 10 to convey the aluminum-plastic composite packaging material, which can effectively improve the ability of the aluminum-plastic composite packaging material to carry out chemical separation treatment; at the same time, the chemically separated aluminum-plastic composite packaging material The vertical separation and drying device 20 can be used for direct drying and separation, which can avoid the drying rate, separation rate, and processing capacity of existing separate centrifugal drying machines for drying and centrifugal screening machines for material separation. It can effectively reduce the loss of aluminum chips and separating agent, and reduce the energy consumption of treatment.

In order to facilitate a better understanding of the technical solutions of the embodiments of the present invention, specific applications of the embodiments of the present invention will be described below.

FIG. 4 is a schematic structural diagram of a specific application of an embodiment of the present invention. In the present embodiment, as shown in Figure 4, two separation reaction devices 10 and two vertical separation drying devices 20 are arranged in the separation system, and the centrifugal drying machine 30 and the vortex separator 40 are shared by sharing, and Other auxiliary equipment realizes continuous separation treatment of aluminum-plastic composite packaging materials, which has good industrial practicability. Specifically, as shown in Figure 4, the feed port of the separation reaction device 10 is connected with a formic acid storage tank 501 and a nitric acid storage tank 502, and is connected with the aluminum-plastic conveyor belt 60; The reaction device 10 is connected, and the first discharge ports of the two vertical separation and drying devices 20 are all connected with the sedimentation centrifuge 30, and the second discharge port of the vertical separation and drying devices 20 can discharge the discharged plastic through the conveyor belt 701. Send into rinsing machine 702 and plastic packing machine 703, do further processing to plastic; The solid phase outlet of settling centrifuge 30 is connected to vortex separator 40, and liquid phase outlet is connected to separating agent buffer pool 802, and separating agent buffers The pool 802 is connected to the feed port of the separation reaction device 10 through a water pump. The whole separation process of the aluminum-plastic composite packaging material by the separation system of this embodiment will be described below.

(1) Before processing the aluminum-plastic composite packaging material, first inject a separating agent into the separation reaction device 10, specifically, inject formic acid and nitric acid solutions into the separation reaction device 10 through the formic acid storage tank 501 and the nitric acid storage tank 502 , as a separating agent, and fill the cavity of the reaction section in the separation reaction device 10. Nitric acid is used as a pH regulator, and the concentration of formic acid is 2-4mol/L, and the concentration of nitric acid is 0.010-0.025mol/L.

(2) From the aluminum-plastic conveyor belt 60, the unbroken whole piece of aluminum-plastic composite packaging material is continuously fed into the feed port of the separation reaction device 10, and the transmission speed of the aluminum-plastic conveyor belt 60 and the speed of the reaction screw in the separation reaction device 10 are controlled at the same time. The rotation speed ensures that the liquid-solid ratio between the separating agent and the aluminum-plastic composite packaging material in the separation reaction device 10 is 30:1-15:1; at the same time, water vapor can be introduced into the gap of the separator shell of the separation reaction device 10 , to ensure that the temperature of the separating agent is maintained at 40°C-75°C.

(3) The aluminum-plastic composite packaging material entering the separation reaction device 10 will be driven by the reaction spiral in the reaction section to undergo a separation reaction with the separating agent while moving to the discharge section. During this process, the aluminum-plastic composite packaging material can be realized. Chemical separation of materials; the aluminum-plastic composite packaging material entering the discharge section will be discharged from the discharge port of the separation reaction device 10 driven by the discharge screw, and enter the vertical reaction device 20 from the discharge port of the vertical separation and drying device. Separate the drying device 20. In this process, in order to ensure the effect of chemical separation of aluminum-plastic composite packaging materials, the rotation speed of the reaction screw can be properly controlled, so that the chemical separation of aluminum-plastic composite packaging materials just completes when the aluminum-plastic composite packaging materials enter the discharge section. Specifically, this implementation In the example system, the rotation speed of the reaction screw can be controlled so that the time for the aluminum-plastic composite packaging material to be in the separating agent is 30 minutes to 40 minutes.

(4) The aluminum-plastic composite packaging material that enters the vertical separation and drying device 20 and undergoes chemical separation can knock off aluminum scraps from the plastic film under the action of the high-speed rotation of the rotating shaft in the vertical separation and drying device 20 to achieve Physical separation of aluminum and plastic, while deacidifying and drying the plastic film, and the physically separated plastic film is discharged from the second discharge port, and aluminum chips, separating agent and a small amount of plastic and pulp are discharged from the first discharge port .

(5) The plastic film discharged from the second discharge port can be sent to the plastic baler 703 through the conveyor belt 701, and the plastic film is packed to obtain the processed plastic, and the plastic film can be processed by the rinsing machine 702 during this process. A small amount of separating agent in the medium is washed and then packaged.

(6) The aluminum chips, separating agent and a small amount of pulp and plastics discharged from the first discharge port can enter the decanting centrifuge 30 for deacidification treatment, and the removed acid, that is, the separating agent and a small amount of plastics, will be discharged from the settling centrifuge. The liquid phase outlet of the centrifuge 30 is discharged, and the deacidified aluminum chips and a small amount of paper pulp are discharged from the solid phase outlet of the decanter centrifuge 30;

(7) The aluminum chips and a small amount of pulp discharged from the settling centrifuge 30 enter the vortex separator 40 for pulp removal treatment. The aluminum chips or pulp and circulating water are pumped into the vortex separator, and the pulp and a small amount of aluminum chips are mixed with part of the circulating water. Discharged from the upper part of the vortex separator 40, most of the aluminum chips are discharged from the lower part of the vortex separator 40 with the circulating water;

(8) The aluminum chips discharged from the lower part of the vortex separator 40 enter the screw centrifuge 901 with the circulating water for dehydration treatment. In order to further reduce the moisture content of the aluminum chips, the aluminum chips discharged from the screw centrifuge 901 need to enter the dryer 902 Drying treatment is carried out, and the dried aluminum scrap is the final physically separated aluminum scrap product.

(9) The pulp and a small amount of aluminum chips discharged from the upper part of the vortex separator 40 can enter the wet drum screen 111 for paper-plastic separation, and the pulp and circulating water are discharged to the inclined screen at the lower part of the wet drum screen 111 through the screen holes of the wet drum screen 111 112, a small amount of pulp screened out from the inclined screen 112 can be returned to the recycled paper production process; a small amount of aluminum chips discharged from the end of the wet drum screen 111 can enter the vortex separator 40 again for circulation and separation treatment.

(10) The separating agent and a small amount of broken plastic discharged from the settling centrifuge 30 pass through the screen 801 to filter out the broken plastic, enter the separating agent buffer pool 802, and return to the separation reaction device 10 for recycling through the water pump, and the screen 801 filters out A small amount of crushed plastics can be returned to the vertical separation and drying device 20 for recycling.

It can be seen that the separation system of this embodiment can effectively separate the aluminum-plastic composite packaging materials, realize the continuous separation process of aluminum-plastic composite packaging materials, effectively save the time consumption of feeding and discharging, and the separation reaction time can be shortened. The time is shortened to 35 minutes, which can effectively improve the efficiency of separation and treatment.

In this embodiment, the separation system can be provided with a control device, which is used to control the separation reaction device 10, the vertical separation and drying device 20, the sedimentation centrifuge 30, and various conveyor belts, pumps, etc., to ensure that after each equipment is in operation, it can Continuously separate the aluminum-plastic composite packaging materials.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: It is still possible to modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the technical solutions of the various embodiments of the present invention. scope.

Claims (7)

1. A vertical continuous separation processing system for aluminum-plastic composite packaging materials using a shaftless spiral, characterized in that it includes a separation reaction device for chemically separating aluminum-plastic composite packaging materials, and a separation reaction device for chemically separating aluminum-plastic composite packaging materials. Vertical separation and drying device for physical separation of composite packaging materials, in which: The separation reaction device includes a separator with a cavity, and a reaction screw and a discharge screw arranged in the cavity of the separator; The separator includes a reaction section and a discharge section, the reaction section is provided with a feed port away from the feed end of the discharge section, and the discharge end of the discharge section is provided with a discharge port, the height of the discharge end is higher than the height of the feed end; The reaction screw is set in the cavity of the reaction section, the discharge screw is set in the cavity of the discharge section, and the discharge screw is vertically arranged relative to the reaction screw; Both the reaction screw and the discharge screw are shaftless helical structures, and one end of the discharge screw and the reaction screw is respectively provided with a motor; The vertical separation and drying device comprises: A vertically arranged cylinder, the cylinder includes an inner cylinder and an outer cylinder with a gap, the wall of the inner cylinder is provided with a screen hole, and the lower end of the cylinder is provided with a feed bin, so A first feed port is provided at the feed bin, and the first feed port is connected to the discharge port on the separation reaction device; A position close to the lower end of the outer cylinder is provided with a first discharge port, and a position close to the upper end of the cylinder is opened on the outer cylinder and a hole penetrating through the outer cylinder and the inner cylinder. The second discharge port, the first discharge port is used to discharge the aluminum foil and the separating agent mixture after the physical separation treatment, and the second discharge port is used to discharge the plastic after the physical separation treatment; A rotating shaft is arranged in the inner cylinder, and a plurality of sickle-shaped blades are intermittently arranged on the rotating shaft, and the plurality of sickle-shaped blades are distributed in a spiral shape; the lower end of the rotating shaft goes deep into the feeding bin, and the Continuous helical blades are provided on the part of the rotating shaft that goes deep into the feed bin; the upper end of the cylinder is provided with a motor connected to the rotating shaft. 2. The vertical continuous separation processing system for aluminum-plastic composite packaging materials adopting shaftless spirals according to claim 1, wherein the shell of the reaction section is a shell of double-layer structure; There are gaps between the double-layer structures, and the inner layer of the cavity close to the reaction section is a heat-conducting shell layer. 3. The vertical continuous separation processing system for aluminum-plastic composite packaging materials adopting a shaftless spiral according to claim 1, wherein the number of the reaction spiral and the discharge spiral is two; The two reaction spirals are arranged in parallel in the cavity of the reaction section, the two discharge spirals are respectively arranged opposite to the two reaction spirals, and the gap between the reaction spiral and the rotation axis of the discharge spiral is The angle is 90°; The included angle between the rotation axes of the two discharging spirals is 120°, and the included angle with the vertical line is 60°. 4. The vertical continuous separation processing system for aluminum-plastic composite packaging materials using a shaftless spiral according to claim 3, wherein the cavity of the reaction section includes 2 U-shaped grooves, and the 2 grooves The U-shaped grooves communicate with each other in a manner that there is no chamber wall of the reaction section in the middle of the two; The two reaction helices are respectively arranged in the two U-shaped grooves. 5. The aluminum-plastic composite packaging material vertical continuous separation processing system adopting shaftless spiral according to claim 1, wherein the length of the sickle-shaped blade is 10cm-15cm, and the height of the sickle-shaped blade is 5cm; The axial angle between the sickle-shaped blade and the rotating shaft is 75°. 6 . The vertical continuous separation processing system for aluminum-plastic composite packaging materials using a shaftless spiral according to claim 1 , wherein the diameter of the rotating shaft is greater than or equal to 20 cm. 7. The vertical continuous separation processing system for aluminum-plastic composite packaging materials using a shaftless spiral according to claim 1, further comprising: A sedimentation centrifuge, the feed port of the sedimentation centrifuge is connected to the first discharge port of the vertical separation and drying device, and is used to deacidify the aluminum foil discharged from the vertical separation and drying device; The vortex separator is connected with the solid phase outlet of the decanter centrifuge, and is used to remove the pulp in the aluminum foil.