JP2022002833A - Waste sorting method, recycled material manufacturing method and processor therefor - Google Patents

Abstract

To provide a waste sorting method which sorts and recovers recycled resources according to recycled resource users from waste containing various kinds of plastics.SOLUTION: A waste sorting method has: a first water tank specific gravity sorting process S7 for sorting and recovering a first water tank floating matter with a specific gravity of less than 1 and a settling first water tank precipitate in a water tank; and a second water tank specific gravity sorting process S8 in which the first water tank precipitate of waste crushed matter, that has been separated and recovered by the first water tank specific gravity sorting process S7, is further separated into a second water tank floating matter floating in a heavy liquid with a specific gravity of more than 1 and a settling second water tank precipitate in the water tank. The first water tank floating matter of the waste crushed matter, which has been generated during separation processing by the first water tank specific gravity sorting process S7, is recovered as "petroleum refining raw material", "naphtha raw material" which become materials for chemical recycling, and the second water tank floating matter of the waste crushed matter, which has been generated during separation processing by the second water tank specific gravity sorting process S8, is recovered as "cement raw fuel", "industrial furnace raw fuel" which become recycled materials for fuel.SELECTED DRAWING: Figure 1

Description

The present invention relates to a recycling technique for recycling waste, and in particular, a method for selecting the specific weight of waste for recycling waste containing various impurities, a method for producing recycled raw materials, and a method for producing the same. Regarding processing equipment.

Wood and metals will rot and rust if left in nature for a long time, but because plastic is a chemically stable substance, it will not decompose even if left in nature. Emissions of general waste including plastics and industrial waste are steadily increasing, and waste treatment has become one of the important environmental problems.

For example, in July 2017, China announced the "Implementation Plan for Reform of Solid Waste Import Control System". Among these, the basic idea is to improve the import control system for solid waste, and to strengthen the collection, utilization, and management of solid waste, and it can be replaced with domestic resources by the end of 2019. It was decided to phase out the import of solid waste.

In this way, the amount of waste stored in Japan is increasing due to import restrictions on waste from Asian countries such as China. If this situation continues, there is a possibility that improper disposal of discharged plastic will occur in each municipality in the future.

Generally, waste is classified into industrial waste and general waste. Industrial waste is classified into 19 types such as cinders, sludge, waste oil, waste acid, waste alkali and waste. General waste is defined as "waste other than industrial waste".

Industrial waste such as automobiles, home appliances, building materials, and plastic containers are crushed and crushed when they are recycled. The crushed and crushed materials crushed and crushed by a crusher are separated and collected by an automatic non-ferrous metal separator using an automatic non-ferrous metal separator that uses a magnet drum or the like to sort and accumulate "iron", and the accumulated non-ferrous metals are collected. ing. However, waste is often disposed of. In addition, general waste is recycled as solid fuel (RDF, RPF), incineration ash / flying ash as a raw material for cement, cement, etc., but the recycling rate is as low as about 20%.

Among the recycling techniques, as a technique for efficiently collecting waste, for example, Patent Document 1 “Waste sorting treatment system and sorting treatment method” can be mentioned. Patent Document 1 is a waste sorting treatment system for sorting recycled plastics from wastes containing a plurality of types of materials, and the recycled plastics are sorted based on the difference in wavelength absorption depending on the material. It is provided with an optical sorting device for using the optical sorting device and a centrifuge for increasing the purity of the recycled plastic based on the difference in specific gravity depending on the material, and the disposal using the optical sorting device and the centrifuge. A waste sorting treatment system having a function of sorting at least one kind of the recycled plastic as a recycled plastic by type by treating a substance is disclosed.

Japanese Unexamined Patent Publication No. 2017-1706553

Patent Document 1 is a technology for responding to the growing need for sorting waste plastics by a single type, and uses a veiled product obtained by compressing and packing waste plastics as a starting material, and from waste plastics to a single type. The material is selected as recycled plastic with high accuracy. Therefore, it is disclosed that a high-purity PP or a high-purity PO is produced by using a centrifuge.

However, wastes such as industrial wastes and general wastes contain many resources that are reused in addition to PP and PO, and from wastes containing various types of plastics, materials that can be used as recycled resources are available. It is not intended to be sorted efficiently.

Wastes that have been disposed of as general wastes and industrial wastes contain many types of plastics, as well as foreign substances such as metals, earth and sand, and glass.

The inventor of the present invention has a high recycling value of chemical recycled raw materials, cement raw materials and industrial furnaces, depending on the users of recycled resources, in order to reuse what was conventionally just waste as valuable resources. We focused on the fact that if we can select and use raw materials for fuel such as fuel, we can reduce the recycling cost and improve the recycling rate of waste.

In addition, those who use recycled resources paid attention to the fact that the chemical industry system that uses chemical recycled raw materials and the fuel raw materials are separate from cement raw fuel and industrial furnace raw fuel system.

Furthermore, as an important point, we focused on the fact that chemical recycled raw materials, fuel raw materials, and other non-recyclable residues can be easily sorted according to their specific gravity.

The object of the present invention is "petroleum refining raw material" and "naphtha raw material" which are raw materials for chemical recycling, and "cement raw material" and "industrial furnace raw material" which are raw materials for fuel, depending on the user of the recycled resource. It is an object of the present invention to provide a method for sorting wastes to be efficiently collected, a method for producing recycled materials, and a treatment apparatus thereof.

One form of the sorting method for solving the above-mentioned problems is a waste sorting method in which recycled resources are sorted and collected according to users of recycled resources from wastes containing various kinds of plastics, and is a chemical recycling raw material. In order to recover the waste, the crushed material obtained by crushing the waste to a predetermined size is separated into a first water tank floating material suspended in water having a specific gravity of 1.0 and a settling first water tank sedimented material in the first water tank. In order to recover the raw material for fuel, the first water tank sorting step and the second water tank floating matter suspended in the liquid having a specific gravity of 1.0 to 1.34 in the second water tank and the settling material are settled. The second water tank sorting step of separating into the second water tank sediment and the first water tank floating matter are dehydrated and dried, and recovered as "petroleum refining raw material" and "naphtha raw material" which are the targets of chemical recycling raw materials. It has a first recovery step and a second recovery step of dehydrating and drying the second water tank suspended matter and recovering it as "cement raw material" and "industrial furnace raw material" which are targets for fuel raw materials.

Another form of the sorting method for solving the above-mentioned problems is a waste sorting method for sorting and recovering recycled resources from wastes containing various kinds of plastics according to the users of the recycled resources, and is a chemical. In order to recover the recycled raw material, the crushed material obtained by crushing the waste to a predetermined size is separated into a first water flow suspended material floating in the first water flow and a settling first water flow sediment in the third water tank. In the first water flow sorting step to be performed, and in order to recover the raw material for fuel, the second water flow suspended matter suspended in the second water flow faster than the first water flow in the fourth water tank from the first water flow sediment. The second water flow sorting step of separating into the second water flow sediment that settles, and the first water flow suspended matter are dehydrated and dried, and recovered as "petroleum refining raw material" and "naphtha raw material" that are the targets of chemical recycling raw materials. It has a third recovery step and a fourth recovery step of dehydrating and drying the second water flow suspended matter and recovering it as "cement raw material" and "industrial furnace raw material" which are the targets of raw materials for fuel.

Another form of the sorting method for solving the above-mentioned problems is a method for producing recycled resources, which sorts and collects recycled resources from wastes containing various kinds of plastics according to the users of the recycled resources, and is a chemical. In order to recover the recycled raw material, the crushed material obtained by crushing the waste to a predetermined size is separated into a first water flow suspended material floating in the first water flow and a settling first water flow sediment in the third water tank. In the first water flow sorting step to be performed, and in order to recover the raw material for fuel, from the first water flow sediment, the second water flow suspended matter suspended in the second water flow faster than the first water flow in the fourth water tank, and The second water flow sorting step of separating into the second water flow sediment that settles, and the first water flow suspended matter are dehydrated and dried, and recovered as "petroleum refining raw material" and "naphtha raw material" that are the targets of chemical recycling raw materials. It has a third recovery step and a fourth recovery step of dehydrating and drying the second water flow suspended matter and recovering it as "cement raw material" and "industrial furnace raw material" which are the targets of raw materials for fuel.

One form of a method for producing recycled raw materials for solving the above problems is a method for producing recycled resources by selecting and collecting recycled resources from wastes containing various types of plastics according to the users of the recycled resources. Chemical recycling In order to recover raw materials, from crushed waste crushed to a predetermined size, in the first water tank, the first water tank floating material floating in water with a specific gravity of 1.0 and the first water tank settling material that settles. In the first water tank sorting step to separate into the above, and in order to recover the raw material for fuel, the second water tank suspended matter suspended in the liquid having a specific gravity of 1.0 to 1.34 from the first water tank sediment is suspended in the second water tank. The "petroleum refining raw material" and "naphtha raw material" which are the targets of chemical recycling raw materials by dehydrating and drying the second water tank sorting step for separating the sedimented material from the second water tank sediment and the suspended matter in the first water tank. It has a first recovery step of recovering as "cement raw material" and a second recovery step of dehydrating and drying the suspended matter in the second water tank as "cement raw material" and "industrial furnace raw material". ..

In the waste specific gravity sorting method of the present invention, the crushed material containing waste can be sorted into chemical recycled raw materials and fuel raw materials according to the users of the recycled resources by performing the specific gravity sorting in several stages.

It is a work flow diagram which shows the basic form of the water tank specific density sorting method of waste which carries out the water tank specific gravity sorting process of Example 1 in two steps. It is a work flow diagram which shows an example of the specific water tank specific density sorting process in the waste specific density sorting process of Example 1. FIG. It is a work flow diagram which shows the basic form of the water flow specific gravity sorting process of waste which carries out the water flow specific gravity sorting process of Example 2 in two steps. It is a work flow diagram which shows an example of the specific water flow specific density sorting process in the waste specific density sorting process of Example 2. FIG. It is a work flow diagram which shows the basic form of the specific density sorting process of waste which combined the water tank specific gravity sorting and the water flow specific gravity sorting of Example 3. FIG. It is a work flow diagram which shows an example of the specific water tank specific density sorting process and water flow specific gravity sorting process in the waste specific density sorting process of Example 3. FIG. It is a block diagram which shows the basic form of the water tank specific density sorting processing apparatus of waste which has the continuous specific gravity sorting water tank of Example 4. FIG. It is a block diagram which shows the basic form of the water flow specific gravity sorting processing apparatus of waste which has the continuous water flow sorting water tank of Example 5. It is a block diagram which shows the basic form of the waste specific density sorting processing apparatus which combined the water tank specific gravity sorting and the water flow sorting water tank of Example 6. It is a figure which showed the type and the specific density of the plastic which is the object of processing of each Example. It is a figure which showed the water tank used for the water tank specific density sorting in Examples 1, 3, 4, and 6.

The waste specific gravity sorting process of the present invention comprises "petroleum refining raw materials" and "naphtha raw materials" as chemical recycling raw materials, and "cement raw materials" and "industrial" as fuel raw materials, depending on the users of recycled resources. The "reactor raw fuel" is a specific weight sorting process for waste that efficiently recovers, a method for manufacturing recycled materials, and a treatment device thereof.

FIG. 10 shows the types and specific densities of the plastics to be treated, which are contained in the waste of each example described later.

As shown in "Types and Specific Density of Plastics" in Table 1 shown in FIG. 10, the specific gravity values of the plastics are from polypropylene and polyethylene having a small specific gravity to polycarbonate having a large specific gravity, PET resin (polyethylene terephthalate), and polyvinyl chloride, respectively. different. Further, even if the same type of plastic is used, the specific gravity value is slightly different due to the difference in the manufacturing method and the difference in the purpose of use.

Further, the plastic material is filled with talc as a crystal nucleating agent in order to improve its rigidity, heat resistance and dimensional stability. Therefore, the specific densities of crushed waste and crushed materials are often different from the values shown in the specific gravity table shown in Table 1. As a matter of course, waste with a large amount of talc filled has a larger value than the value in the specific gravity table. Waste with a small amount of talc filling will have a smaller value than the value in the specific gravity table.

As shown in Table 1, the present inventors have focused on the fact that crushed waste can be roughly classified into three categories according to the recycling use. Of the three classifications, classification 1 has a specific density of less than 1 based on the specific density 1 of water. Category 2 is slightly larger than the specific density 1 (specific gravity 1.00 to 1.34). Category 3 has a higher specific density (specific gravity 1.35 or more).

Of the above categories, category 1 is collected as a recycled material for chemical recycling, category 2 is collected as a recycled material for fuel raw materials, and category 3 is collected as a residue.

Further, in the present embodiment, the above classification is for sorting into fuel raw materials such as chemical recycled raw materials, cement raw materials and industrial furnace raw materials having high recycling value according to the users of recycled resources. For example, if the polypropylene talc-containing or ABS resin shown as Category 2 can be used as a raw material for chemical recycling, it can be treated as Category 1. In that case, the specific density of the specific gravity selection, which will be described later, will also be changed according to the classification.

Further, the classification 3 may be further classified into the classification 3-1 having a specific density of 1.35-1.39 and the classification 3-2 having a specific density of 1.40 or more. Classification 3-1 recycles polyvinyl chloride and vinyl chloride resin as material recycling materials by low-temperature heat embrittlement technology and chloride volatilization incineration, and reduces chlorine to the ocean. On the other hand, for the residue having a specific density of 1.40 or more, heavy metals may be separated and recovered from the incinerator ash by the chloride volatilization method with high efficiency.

Raw materials for fuel can be used as fuel for industrial furnaces and thermal power generation.

As described above, in the present invention, depending on the person who uses the recycled material, the waste is sorted and recovered by using the specific gravity for the chemical recycling raw material, the fuel raw material, and the residue.

FIG. 1 is a work flow diagram showing a basic form of a waste specific density sorting process in which the water tank specific gravity sorting step of Example 1 is carried out in two stages. FIG. 2 is a work flow diagram showing an example of a specific water tank specific gravity sorting step in the waste specific gravity sorting process of Example 1.

The waste specific gravity sorting process of Example 1 can be applied to each of general waste such as plastic containers, crushed plastic and industrial waste such as waste automobiles, home appliances and building materials. This is done after separating valuable resources such as metals from the crushed waste. The waste specific gravity sorting treatment is a treatment in which the crushed material is crushed and subjected to several stages of specific gravity sorting treatment to be recycled into useful organic materials. In particular, in the waste specific gravity sorting process of Example 1, a water tank specific gravity sorting step is carried out in two stages for waste sorting, and the chemical recycling raw material and the fuel raw material are recovered.

<Main processing line for specific weight sorting of waste>
The waste sorting process of Example 1 has the following treatment steps. Mainly, the manual sorting step S1, the optical sorting step S2, the crushing step S3, the iron separation and recovery step S4, the non-iron separation and recovery step S5, the crushing and cleaning step S6, the first water tank specific gravity sorting step S7, and the first. It has two water tank specific gravity sorting steps S8, a dehydration step S9, and a drying step S10. Among the above treatment steps, the waste specific gravity sorting process of Example 1 corresponds to the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8.

The manual sorting process S1 is a so-called rough sorting process, in which metals, glass, paper, and wood pieces are removed from waste such as waste automobiles, home appliances, building materials, and plastic containers, and the manual sorting residue is taken out. .. This is a work process for preventing problems in each subsequent processing work. For example, it is a work of manually taking out something other than waste while a person sees it with the naked eye on a belt conveyor. What is removed is treated as a residue. Metals can be recycled as they are.

The optical sorting step S2 is, for example, a work step of analyzing a wavelength with near infrared rays to recognize a specific material, blowing off the object with an air nozzle, and sorting the optical sorting residue. The sorting pattern is set according to the physical characteristics (mixing ratio) of the hand-sorted residue, which is the object to be processed, and the work is performed. It is also possible to use a dry sorting step instead of or both of the optical sorting step S2.

In this optical sorting step S2, the optical sorting residue is taken out from the manual sorting residue. That is, from hand-sorted residues to plastic products such as containers, textiles such as paper, corrugated cardboard, and wood, industrial plastics (plastics used in the manufacturing industry), steel and non-ferrous metals, and metals such as metals attached to fabrics. Sort out the kind.

In this process, the sorted waste and metals are collected and recycled. Fibers and the like are treated as residues.

The crushing step S3 is a processing step for crushing the optical sorting residue. In this crushing step S3, the optical sorting residue is crushed using a crusher 20 described later to obtain a crushed product. The particle size of the crushed material (shredder dust) should be about 100 to 300 mm. In the treatment of the first embodiment, for the crushed material, for example, the crushed material (shredder dust) is conveyed to the next step by using a conveyor such as a screw conveyor.

The crushed material treated in the crushing step S3 is then treated in the iron separation and recovery step S4. In this iron content separation / recovery step S4, iron content is separated and recovered from the crushed material using, for example, a magnetic force sorter 30 (see FIG. 7). In this step, the crushed material from which iron is separated (iron separated crushed material) is transported to the next step.

The iron-separated and crushed material treated in the iron separation / recovery step S4 is then treated in the non-ferrous metal separation / recovery step S5. In this non-ferrous metal separation / recovery step S5, the non-ferrous metal contained and the iron content of the iron-separated crushed product from which the iron content has been separated are further separated and recovered. The crushed material from which the non-ferrous metal is separated (non-ferrous separated crushed material) is transported to the next step.

The crushed material treated in the iron separation / recovery step S4 and the non-ferrous metal separation / recovery step S5 is further selected and removed from the metal, earth and sand, and glass contained in the crushed material, if necessary. At this time, it is sorted and removed by an optical separation / recovery step, a dry separation / recovery step, and a manual sorting performed by a person.

The non-ferrous separated and crushed material treated in the non-ferrous metal separation and recovery step S5 and the like is then treated in the crushing and washing step S6. In this pulverization and cleaning step S6, the non-ferrous separated crushed product is pulverized to a predetermined size and washed to obtain a pulverized product. The particle size after pulverization is about 5 to 100 mm. The crushed product crushed to a predetermined size is transferred to the next step such as the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8.

Next, the water tank specific gravity sorting step including the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8 will be described with reference to FIG.

<Structure of water tank specific gravity sorting process>
FIG. 2 is a work flow diagram showing an example of a water tank specific gravity sorting process. The crushed waste processed in the manual sorting step S1, the optical sorting step S2, the iron separation / recovery step S4, the non-iron separation / recovery step S5, and the crushing / cleaning step S6 contains many types of plastics in addition to being mixed. , Metal, earth and sand, glass and other foreign substances are mixed.

In the first water tank specific gravity sorting step S7, in the water tank, the suspended matter in the first water tank and the sediment in the first water tank are separated and recovered. Here, the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8 are expressed, but these are expressed for convenience regardless of the grade. Similarly, the first water tank floating matter and the first water tank sediment and the second water tank floating matter and the second water tank sediment are expressed, but these are also expressed for convenience regardless of the order and grade. .. This is to identify the result product produced in any process.

In Example 1, it is used in the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8 so as to sort the first water tank floating substance as a chemical recycling raw material and the second water tank floating substance as a fuel raw material. Set the specific density of the liquid. This makes it possible to select recycled resources according to the users of the recycled resources.

In this way, the recycled resource is separated and recovered from the waste, but in the present invention, the recycled resource is not simply separated from the waste, but the recycled resource is separated from the waste according to the user of the recycled resource. It is characterized by sorting.

<Operation of the first water tank specific gravity sorting process and the second water tank specific gravity sorting process>
In the first water tank specific gravity sorting step S7, since the floating material in the first water tank is used as a raw material for chemical recycling, ^{it is settled with a liquid having a specific gravity of 1.00 (1.00 g / cm 3} ), for example, a floating substance in a water tank containing water. It is a water tank sorting process to sort things. For example, a specific gravity sorting water tank is used in the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8 described later. This specific gravity sorting water tank uses a processing device equipped with a plurality of paddles attached to the upper surface thereof and a spiral discharger attached to the bottom of the box-shaped sorting water tank to discharge the settled crushed matter.

FIG. 11 shows an embodiment of a specific gravity sorting water tank used in the water tank specific gravity sorting step. The specific gravity sorting water tank 111 has an input port 115 for charging the crushed material and a discharge port 113 for collecting the suspended material at both ends. Further, the specific gravity sorting water tank 111 has a liquid discharge device 114 located in the vicinity of the charging port 115, and a plurality of paddles 112 located in the vicinity of the water surface in the water tank.

The crushed material is sorted by charging the crushed material into the specific gravity sorting water tank 111 in which the liquid 116 is stored from the charging port 115 and collecting the suspended matter and the sediment separately. When the waste containing the waste plastic is charged, it is forcibly charged at the charging port 115 using a screw conveyor or the like. Since many plastics float lightly on water, the cleaning effect may not be sufficient simply by charging the plastic into the specific gravity sorting water tank 111. Therefore, the liquid is discharged from the liquid discharging device 114 from the vicinity of the upper part of the charging port 115. Therefore, a downward flow is generated in the specific gravity sorting water tank.

Although the structure of the specific gravity sorting water tank used in the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8 is the same, the first water tank specific gravity sorting step S7 and the second water tank specific weight sorting are performed from the liquid discharge device 114. In step S8, liquids having different specific densities are discharged.

If the pulverized product is dehydrated before the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8, the wettability with the liquid in the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8. Can be improved, and the sorting accuracy in each process can be improved.

Further, by stirring the charged crushed material with the paddle 112, the effect of dispersing the crushed material in each crushed material can be produced. In addition, it is possible to prevent the floating crushed material and the settling crushed material from interfering with each other.

Further, the paddle 112 makes it possible to generate a water flow from the input port 115 toward the discharge port 113, transport the crushed material, and efficiently sort the suspended matter and the sedimented material. The suspended matter is collected from the discharge port 113. It is preferable to install a screw conveyor or the like in the lower part of the specific gravity sorting water tank 111 in order to collect the sediment, and a separate sediment recovery port is provided to collect the sediment.

Of course, such a configuration is an example and is not limited to this.

In the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8, running water is formed by scratching the liquid on the surface layer with the paddle 112 in each of the specific weight sorting water tanks. In order to recover the "petroleum refined raw material" and "naphtha raw material" which are the raw materials for chemical recycling, water having a specific gravity of 1.00 is used in the first water tank specific gravity sorting step S7. On the other hand, in order to recover the "cement raw material" and the "industrial furnace raw fuel" which are raw materials for fuel, a liquid having a specific gravity of 1.34 is used in the second water tank specific gravity sorting step S8. In the specific gravity of the plastic shown in FIG. 10, the specific gravity of the polyvinyl chloride and the vinyl chloride resin is 1.35. Therefore, in the second water tank specific gravity sorting step S8, the chlorine-based compound is sorted as the second water tank sediment. This is because when chlorine is contained in the fuel raw material, it corrodes the inside and the surroundings of the furnace, and these are removed from the fuel raw material.

In the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8, the first water tank floating matter and the second water tank floating matter having a smaller specific gravity than the liquid of the respective specific weight sorting water tanks and the first water tank sedimentation having a large settling specific gravity are settled. This is a treatment step for sorting the material and the sediment in the second water tank. Although it takes a long time for natural sedimentation, it is possible to sort out crushed waste with different specific densities in a short time by using running water.

In this first water tank specific gravity sorting step S7, ^{a liquid having a specific gravity of 1.00 (1.00 g / cm 3} ) is used. Waste crushed products having a specific density of less than 1.00 (1.00 g / cm ³ ) are sorted as the first water tank floating matter, and waste crushed products having a specific gravity of 1.00 or more are sorted as the first water tank sediment. For example, as described in the table of "Each plastic and specific density" in Table 1, classification 1 (polypropylene (PP), polyethylene (PE)) is selected as the first water tank suspended matter from the crushed material. The selected substances of Category 1 are recovered as "petroleum refining raw materials" and "naphtha raw materials" which are raw materials for chemical recycling through the treatments of the dehydration step S9 and further the drying step S10.

In the first water tank specific gravity sorting step S7, classification 2 (AS resin (acrylonitrile styrene) (AS), polystyrene (PS)), classification 3 (polyvinyl chloride, vinyl chloride resin (PVC), metal, used for electric wire harnesses, Rubber, etc.) is sorted as the first water tank sediment. The first water tank sediment may also contain polypropylene (PP) and polyethylene (PE) that have not been separated.

When sorting waste crushed products having a specific density of less than 1.00 of water, it is also possible to use a liquid having a specific density smaller than 1.00 (the specific gravity is 0.90). For example, by using a liquid having a specific density of less than 1.00, it is possible to sort out liquid polypropylene (PP) and polyethylene (PE) having a specific gravity of less than 1.00.

In the waste specific gravity sorting treatment of Example 1, the first water tank sediment is further sorted by the second water tank specific gravity sorting step S8. This second water tank specific gravity sorting step S8 is sorted using a heavy liquid having a specific gravity of 1.34 (1.34 g / cm ^2). Category 2 AS resin (acrylonitrile styrene) (AS), polystyrene (PS), flame retardant-containing PP, and the like are sorted as the second water tank suspended matter. Even when polypropylene (PP) or polyethylene (PE) is contained in the sediment in the first water tank, it is sorted as the suspended material in the second water tank. These are recovered as "cement raw material" and "industrial furnace raw fuel" which are raw materials for fuel through the processing of the dehydration step S9 and further the drying step S10. Polypropylene (PP) and polyethylene (PE) may be recovered as "petroleum refinery raw materials" and "naphtha raw materials" and used as chemical recycling raw materials.

Regarding waste, for example, scrapped automobiles are equipped with a driving motor and a wire harness. Copper wire is used for wires such as these motors and wire harnesses, and vinyl chloride is often used for the skin of the wire. In the crushing step S3, this vinyl chloride is entangled with a resin having friction (urethane resin or the like), and chlorine is easily mixed. The recovered metal contains a large amount of chlorine and copper. ASR (Automobile Shredder Resolution), which is an automobile crushed residue (shredder dust), also contains a large amount of chlorine and copper. During the incineration process, chlorine content is not preferable because it corrodes the inside of the furnace and the surrounding area. Therefore, a chlorine-free solution is used as the heavy liquid used for this sorting process.

Classification 3 polyvinyl chloride, vinyl chloride resin (PVC), metal, and earth and sand sorted as the second water tank sediment by the second water tank specific gravity sorting step S8 are recovered as residues. The recovered material is used for landfills and the like after being dechlorinated, for example.

The water in the first water tank specific gravity sorting step S7 is contaminated by the pulverized material, but the heavy liquid used in the second water tank specific gravity sorting step S8 is less contaminated, so that the cost for the heavy liquid can be reduced.

Further, if necessary, a water tank specific gravity sorting step may be further incorporated after the second water tank specific gravity sorting step S8. For example, by using the second A water tank specific gravity sorting step using a liquid having a specific density of 1.40, the classification 3 is further classified into the classification 3-1 having a specific density of 1.35-1.39 and the classification 3-2 having a specific density of 1.40 or more. You may sort.

Further, the order of the first water tank specific gravity sorting step S7 and the second water tank specific gravity sorting step S8 may be reversed. In this case, since water is used for sorting by the first water tank specific gravity sorting step S7, a cleaning effect on the suspended matter of Category 1 can be obtained.

According to the first embodiment, the waste, which was conventionally a mere waste, is subjected to a plurality of water tank specific gravity sorting steps using a liquid having a different specific gravity according to the purpose of using the recycled material, and the chemical recycling raw material and the cement raw material are used. It can be recycled as a raw material for fuels such as fuel and industrial furnace raw materials, and the recycling rate of waste can be improved at low cost.

FIG. 3 is a work flow diagram showing a basic form of a waste specific density sorting process in which the water flow specific gravity sorting step of Example 2 is carried out in two stages. FIG. 4 is a work flow diagram showing an example of a specific water flow specific gravity sorting step in the waste specific gravity sorting process of Example 2.

The waste specific gravity sorting treatment of Example 2 is a method of sorting suspended matter and sediment using water streams having different flow velocities, instead of using liquids having different specific densities for the specific gravity sorting treatment as in Example 1. be. In particular, in the water flow specific gravity sorting process of Example 2, the water flow specific gravity sorting step is carried out in two stages for sorting the waste. The description up to the crushing and cleaning step S6 described in Example 1 is the same as that in Example 1, and thus the description thereof will be omitted.

<Structure of water flow specific gravity sorting process>
As shown in the work flow diagram showing an example of the water flow specific gravity sorting step of FIG. 4, the crushed waste of the waste finely divided in the crushing cleaning step S6 is the first water flow suspended matter in the water tank in the first water flow specific gravity sorting step S21. And the first water flow sediment.

This water flow sorting is a sorting method that makes it possible to sort waste crushed products having a specific gravity of more than 1.00 in a state where a liquid, for example, water is circulated or in a vortex state in a water tank. The crushed waste charged from the charging port 115 is collected as a suspended substance because it is moved to the discharging port 113 before being settled by its gravity in the moving water. Therefore, when the flow velocity of the water flow is high, crushed matter having a specific gravity of 1 or larger can be sorted as a suspended matter. When the flow velocity of the water flow is slow, crushed matter having a specific density of 1 can be sorted as a suspended matter. By adjusting this flow velocity, it is possible to sort out wastes having slightly different specific densities. The “water tank specific gravity sorting” of Example 1 is a method of sorting crushed waste into floating matter and sediment by specific gravity difference in water or heavy liquid in the water tank. On the other hand, in the "water flow specific gravity sorting" of the second embodiment, the water is moved at a predetermined flow velocity in the water in the water tank, and the sedimentation of the pulverized material having a large specific gravity is delayed, so that the suspended matter and the sediment are separated. It is a method of sorting.

Further, when the crushed material contains a large amount of earth and sand and glass, this water flow specific gravity sorting step can be used to sort the crushed waste from the earth and sand and glass that easily settle.

<Operation of the first water flow specific gravity sorting process and the second water flow specific gravity sorting process>
For example, a vortex type separation water tank is used in the first water flow specific gravity sorting step S21 and the second water flow specific gravity sorting step S22 described later. It is formed on the propeller that stirs the water in the cylindrical water tank and the bottom of the cylindrical water tank that discharges the settled first water flow sediment and the second water flow sediment in order to separate the crushed waste by the vortex of water and the specific gravity difference. A treatment device equipped with a funnel-shaped discharge port and a discharge device for taking out the separated first water flow suspended matter and the second water flow suspended matter attached to the peripheral edge of the opening of the cylindrical water tank is used. Of course, this is just an example and is not limited to this.

In the first water flow specific gravity sorting step S21 and the second water flow specific gravity sorting step S22, in the vortex type cylindrical separation water tank, the crushed material containing metal in the center of the vortex type cylindrical separation water tank against the water flow has a large specific gravity. Is settled.

In the first water flow specific gravity sorting step S21 and the second water flow specific gravity sorting step S22, the first water flow floating substance and the second water flow floating substance having a small specific gravity are suspended and taken out on the water surface and in the center of the vortex type cylindrical separation tank together with the rotating water flow. .. The first water flow sediment and the second water flow sediment, which have a large specific gravity, are rotated in water together with the water flow and taken out from the peripheral edge of the vortex type cylindrical separation tank, so that the flow velocity of the water flow (vortex flow) can be changed for the crushed materials having different specific densities. Can be quickly separated into several types.

In the first water flow specific gravity sorting step S21, the flow velocity (5.00 m / min) of the water flow corresponding to the specific gravity of 1.00 or more is set. The pulverized material having a specific gravity of less than 1.00 (1.00 g / cm ³ ) is sorted as the first water flow suspended matter. For example, as described in the table of "Types and specific densities of plastics" in Table 1, polypropylene (PP) and polyethylene (PE) of Category 1 are sorted as the first water flow suspended matter. The selected polypropylene (PP) and polyethylene (PE) are processed in the dehydration step S9 and further in the drying step S10, and are recovered as "petroleum refining raw materials" and "naphtha raw materials" which are raw materials for chemical recycling.

Similarly, in the first water flow specific gravity sorting step S21, AS resin (acrylonitrile styrene) (AS), polystyrene (PS) of category 2 and category 3, polyvinyl chloride, vinyl chloride resin (PVC) used for electric wire harness, metal. , Rubber, etc. are sorted as the first water flow sediment. The first water flow sediment may also contain polypropylene (PP) and polypropylene (PP) that have not been separated.

The first water flow sediment is sorted by the second water flow specific gravity sorting step S22. In this second water flow specific gravity sorting step S22, the flow velocity of the water flow (5.10 m / min-7.50 m / min) corresponding to the specific gravity 1.01-1.34 is set and sorted. Category 2 AS resin (acrylonitrile styrene) (AS), polystyrene (PS), flame retardant-containing PP, and the like are selected as the second water flow suspended matter. AS resin (acrylonitrile styrene) (AS), polystyrene (PS), PP containing flame retardant, etc. are recovered as "cement raw fuel" and "industrial furnace raw fuel" which are raw materials for fuel. Polypropylene (PP) and polyethylene (PE) not separated in the first water flow specific gravity sorting step S21 may be recovered as "petroleum refining raw materials" and "naphtha raw materials" and subject to chemical recycling.

Polyvinyl chloride, vinyl chloride resin (PVC), metal, and earth and sand sorted as the second water flow sediment by the second water flow specific gravity sorting step S22 are recovered as residues. The recovered material is, for example, dechlorinated and then used for landfills and the like.

If the pulverized product is dehydrated before the first water flow specific gravity sorting step S21 and the second water flow specific gravity sorting step S22, the wettability with the liquid is improved and the sorting accuracy in each step can be improved. ..

According to the second embodiment, wastes that were conventionally mere wastes are recycled into chemical recycling raw materials, cement raw materials, and industrial furnaces by a plurality of water flow specific gravity sorting steps using liquids having different specific gravity according to the purpose of recycling. It can be used as a raw material for fuel such as fuel, and the recycling rate of waste can be improved.

Further, since water is used as a liquid, the cost can be suppressed, and the cleaning effect of the pulverized product can be expected by the first water flow specific gravity sorting step and the second water flow specific gravity sorting step.

If necessary, a water flow specific gravity sorting step (not shown) may be further incorporated after the second water flow specific gravity sorting step S22. Highly accurate sorting is possible when there are various types of plastic. It can be used by slightly changing the flow velocity of the water flow.

FIG. 5 is a work flow diagram showing a basic form of a waste specific density sorting process in which the water tank specific gravity sorting and the water flow specific gravity sorting of Example 3 are combined. FIG. 6 is a work flow diagram showing an example of a specific water tank specific gravity sorting step and water flow specific gravity sorting step in the waste specific gravity sorting process of Example 3.

The waste specific gravity sorting treatment of Example 3 is a treatment in which the water tank specific gravity sorting treatment using liquids having different specific densities of Example 1 and the water flow specific gravity sorting treatment using water streams having different flow velocities of Example 2 are combined. As for the third embodiment, the description up to the crushing and cleaning step S6 described in the first embodiment will be omitted.

<Structure of water tank specific gravity sorting process and water flow specific gravity sorting process>
As shown in the work flow diagram of the water tank specific gravity sorting step and the water flow specific gravity sorting step of FIG. 6, the crushed wastes finely divided in the crushing and cleaning step S6 are the third water tank floating matter and the third water tank floating matter in the third water tank specific gravity sorting step S31. 3 Sort into aquarium sediments. Next, this third water tank sediment is sorted into a third water flow suspended matter and a third water flow sediment in the third water flow specific gravity sorting step S32.

The third water tank specific gravity sorting step S31 is, for example, a water tank sorting step of sorting into floating and sedimenting water in a water tank containing water. In the third water tank specific gravity sorting step S31, the ^{crushed waste having a specific gravity of less than 1.00 (1.00 g / cm 3} ) is regarded as the floating material in the third water tank, and the crushed waste having a specific gravity of 1.00 or more is the third. Separate and collect as aquarium sediment. For example, the materials of Category 1 (polypropylene (PP), polyethylene (PE)) selected as the floating matter in the third water tank are subjected to the treatments of the dehydration step S9 and further the drying step S10, and are subjected to the treatments of the "petroleum refining raw material" and "naphtha". It is collected as a "raw material" and is subject to chemical recycling.

Similarly, in the third water tank specific gravity sorting step S31, AS resin (acrylonitrile styrene) (AS), polystyrene (PS), polyvinyl chloride, vinyl chloride resin (PVC), metal, rubber used for wire harnesses other than Category 1 Etc. are sorted as the third water tank sediment. The third water tank sediment may also contain polypropylene (PP) and polyethylene (PE) that have not been separated.

In Example 3, this third aquarium sediment is treated not by the aquarium specific gravity sorting by the heavy liquid of the aquarium but by the water flow specific gravity sorting step. Since water can be used instead of the heavy liquid, it is possible to sort at low cost.

In this third water flow specific gravity sorting step S32, the flow velocity (7.50 m / min) of the water flow corresponding to the specific gravity 1.34 is set, and the classification 2 is sorted. Category 2 includes polypropylene (PP), polyethylene (PE), AS resin (acrylonitrile styrene) (AS), polystyrene (PS), PP containing a flame retardant, and the like, and is selected as a third water flow suspended matter. These are recovered as "cement raw material" and "industrial furnace raw fuel" which are raw materials for fuel through the processing of the dehydration step S9 and further the drying step S10.

Polypropylene (PP) and polyethylene (PE) contained as the third water flow suspended matter may be recovered as "petroleum refining raw materials" and "naphtha raw materials" and subject to chemical recycling.

Polyvinyl chloride, vinyl chloride resin (PVC), metal, and earth and sand sorted as the third water flow sediment by the third water flow specific gravity sorting step S32 are recovered as residues. The recovered material is, for example, dechlorinated and then used for landfills and the like.

The third water flow sediment may be further sorted with a heavy liquid having a specific gravity of 1.40 and recovered.

According to the third embodiment, water can be used as the liquid in the third water tank specific gravity sorting step S31 and the third water flow specific gravity sorting step S32 in which the pulverized product is first charged.

Further, according to the third embodiment, the waste, which was conventionally a mere waste, is recycled as a raw material for fuel such as a chemical recycling raw material, a cement raw material, and an industrial furnace raw material, depending on the purpose of use of the recycled material. It is possible to improve the waste recycling rate at low cost.

Further, a heavy liquid having a specific density of 1.34 is used in the third water tank specific gravity sorting step S31 (third water tank specific gravity sorting step S31A), and the water flow equivalent to the specific gravity 1.01-1.20 is used in the third water tank specific gravity sorting step S32. (Third water flow specific gravity sorting step S32A), the crushed material may be sorted and recovered. In this case, since water can be used as a liquid in the third water flow specific gravity sorting step S32A, the cost can be suppressed and the cleaning effect can be obtained, so that the entire step can be shortened.

In addition, by adjusting the speed of the water flow, sorting can be performed according to the purpose of recycling, that is, the request of the user of the recycled resource.

If necessary, although not shown, a water tank specific gravity sorting step or a water flow specific gravity sorting step may be incorporated after the third water tank specific gravity sorting step S31 or the third water flow specific gravity sorting step S32. It can be used by slightly changing the flow velocity of heavy liquid or water flow.

FIG. 7 is a block diagram showing a basic embodiment of a waste sorting treatment apparatus having a continuous specific gravity sorting water tank according to the fourth embodiment.

The fourth embodiment corresponds to the first embodiment and is a waste sorting treatment apparatus having a continuous specific gravity sorting water tank.

The waste sorting treatment device of the fourth embodiment is mainly an optical sorting device 10, a crusher 20, a magnetic force sorting machine 30, a non-iron separator 40, a crushing washing machine 50, and a first specific density sorting water tank. 60, a second specific gravity sorting water tank 70, a dehydration device 80, and a dryer 90 are provided.

The optical sorting device 10 is a device that analyzes a wavelength by near infrared rays, recognizes a specific material, and blows off the object with an air nozzle to sort the object. It is also possible to use a dry sorting device in place of or together with the optical sorting device 10.
The crusher 20 is a device including a rotary blade and a fixed blade that crush the waste to a predetermined size.

The magnetic force sorter 30 is a device that separates and recovers iron from crushed waste by using magnetic force. The non-ferrous metal separator 40 is a device for separating and recovering the non-ferrous metal content of crushed waste. The crushing and washing machine 50 is a device that crushes and cleans crushed plastic to a predetermined size.

The first specific gravity sorting water tank 60 is a device that separates and collects crushed waste into a first water tank suspended matter having a specific gravity smaller than 1 and a settling first water tank sediment.

In the second specific gravity sorting water tank 70, the first water tank sediment of the waste crushed material sorted by the first specific gravity sorting water tank 60 is further settled with the second water tank floating matter suspended by a heavy liquid having a specific density larger than 1. It is a device for sorting into the second water tank sediment.

By using liquids having different specific densities in the two water tanks of the first specific gravity sorting water tank 60 and the second specific gravity sorting water tank 70, it is possible to recover recycled raw materials from waste according to the purpose of recycling.

The dehydration device 80 is a device for dehydrating the first water tank floating matter and the second water tank floating matter. The dryer 90 is a device for drying the dehydrated first water tank floating matter and the second water tank floating material.

According to the fourth embodiment, by using water as the liquid of the first specific gravity sorting water tank 60 in which the pulverized product is charged first, the cost can be suppressed and the cleaning effect can be obtained, so that the whole process can be shortened.

According to the sorting treatment apparatus of Example 4, the waste is recycled as a raw material for chemical recycling, a raw material for cement, and an industrial furnace by a plurality of water tank specific gravity sorting steps using liquids having different specific gravity depending on the purpose of use. It can be recycled as a raw material for fuel such as raw materials, and the recycling rate of waste can be improved at low cost.

Further, the order of the first specific density sorting water tank 60 and the second specific density sorting water tank 70 may be exchanged.

FIG. 8 is a block diagram showing a basic embodiment of a waste sorting treatment apparatus having a continuous water flow sorting water tank according to the fifth embodiment.

The fifth embodiment corresponds to the second embodiment and is a waste sorting treatment apparatus having a continuous water flow sorting water tank. The waste sorting and processing device of the fifth embodiment is mainly the optical sorting device 10, the crusher 20, the magnetic force sorting machine 30, and the non-iron content separating machine 40, similarly to the waste sorting and processing device of the fourth embodiment. A device including a crushing washing machine 50, a first water flow sorting water tank 110, a second water flow sorting water tank 120, a dehydrating device 80, and a dryer 90. Except for the first water flow sorting water tank 110 and the second water flow sorting water tank 120, which are specific gravity sorting devices, the same as the device of the fourth embodiment, the description thereof will be omitted.

In the first water flow sorting water tank 110, in order to recover the chemical recycling raw material, the first water flow floating material floating in the water flow in the water tank is recovered as "petroleum refining raw material" and "naphtha raw material". In addition, it is sorted into the first water flow sediment that settles. The first water flow sorting water tank 110 is adapted to perform specific gravity sorting by varying the flow velocity of the water flow.

The second water flow sorting water tank 120 recovers the raw material for fuel as a recycled resource from the first water flow sediment of the waste crushed material sorted by the first water flow sorting water tank 110. In the second water flow sorting water tank 120, the second water flow suspended matter floating in the water flow having a flow velocity faster than the flow velocity of the first water flow sorting water tank 110 is recovered as "cement raw material" and "industrial furnace raw fuel" as fuel raw materials. , It is a device for sorting the second water flow sediment that also settles in the water flow. The second water flow sorting water tank 120 is adapted to perform specific gravity sorting by varying the flow velocity of the water flow.

According to the fifth embodiment, water can be used as the liquid of the first water flow sorting water tank 110 and the second water flow sorting water tank 120 into which the crushed material is first charged.

FIG. 9 is a block diagram showing a basic form of a waste sorting treatment apparatus in which the water tank specific gravity sorting and the water flow sorting water tank of the sixth embodiment are combined.

Example 6 is. Corresponding to the third embodiment, it is a waste sorting treatment apparatus in which a water tank specific gravity sorting and a water flow sorting water tank are combined. The waste sorting and processing device of the sixth embodiment is mainly the optical sorting device 10, the crusher 20, the magnetic force sorting machine 30, and the non-iron content separating machine 40, similarly to the waste sorting and processing device of the fourth embodiment. A device including a crushing washing machine 50, a third specific gravity sorting water tank 210, a third water flow sorting water tank 220, a dehydrating device 80, and a dryer 90. Except for the third specific gravity sorting water tank 210 and the third water flow sorting water tank 220, which are the specific gravity sorting devices, the same as the device of the fourth embodiment, the description thereof will be omitted.

In order to recover the chemical recycling resources, the third specific density sorting water tank 210 sorts the crushed waste into a floating third water tank floating substance having a specific gravity smaller than 1 and a settling third water tank settling substance. It is a sorting device.

The third water flow sorting water tank 220 is the third water tank sediment of the waste crushed material sorted by the third specific gravity sorting water tank 210, and the third water flow floating matter floating in the water flow is "cement raw fuel" and "industrial furnace raw fuel". It is a device that sorts the third water flow sediment that is collected as "" and settles even in the water flow.

According to the sixth embodiment, water can be used as the liquid of the third specific gravity sorting water tank 210 and the third water flow sorting water tank 220 into which the crushed material is first charged, the cost can be suppressed, and the cleaning effect can be obtained. The process can be shortened.

Further, a heavy liquid having a specific gravity of 1.34 was used in the third specific gravity sorting water tank 210, and then the crushed material was sorted and collected in the third water flow sorting water tank 220 by a water flow equivalent to the specific gravity 1.01-1.20. Is also good. In this case, since water is used as a liquid in the third water flow sorting water tank 220 and the water flow is utilized, a cleaning effect can be expected. In addition, by adjusting the speed of the water flow, it is possible to more appropriately select the recycled resources required by the users of the recycled resources.

It should be noted that the present invention is not limited to the embodiment of the above-mentioned invention as long as the waste can be sorted and recovered according to the purpose of recycling by a plurality of specific gravity sorting, and various changes can be made without departing from the gist of the present invention. Is.

As described above, according to each embodiment, the waste specific gravity sorting treatment and the treatment apparatus thereof of the present invention are not limited to industrial waste, and general waste is sorted and collected according to the purpose of recycling. The recycling rate can be improved easily and at low cost.

S3 crushing step S4 iron separation and recovery step S5 non-iron separation and recovery step S6 crushing and cleaning step S7 first water tank specific density sorting step S8 second water tank specific density sorting step S9 dehydration step S21 first water flow specific density sorting step S22 second water flow specific gravity sorting step S31 3rd Relative Density Sorting Step S32 3rd Relative Density Sorting Step 20 Crusher 30 Magnetic Sorter 40 Non-Iron Separator 50 Crushing Washer 60 1st Relative Density Sorting Tank 70 2nd Relative Density Sorting Tank 80 Dehydrating Device 110 1st Relative Density Sorting Tank 120 2nd water flow sorting water tank 210 3rd specific density sorting water tank 220 3rd water flow sorting water tank

One form of sorting method to solve the above problems is to recycle resources from wastes containing various types of plastics such as automobiles, home appliances, building materials, plastic containers, and crushed plastics, depending on the users of the recycled resources. A method for sorting and collecting waste, in which an optical sorting step of analyzing the wavelength of the waste to remove a specific material to obtain a residue and a residue obtained by the optical sorting step have a predetermined size. A crushing step of crushing to obtain a crushed product, an iron separation and recovery step of separating and recovering metallic magnetic materials from the crushed material by the crushing step using magnetic force, and an iron separation and crushing step of separating and recovering the iron content by the iron separation and recovery step. A non-iron separation / recovery step of separating and recovering non-iron contained in a product, a crushing / cleaning step of further crushing and washing the crushed material treated by the iron separation / recovery step and the non-iron separation / recovery step, and the crushing. A first water tank sorting step of separating the crushed material from the washing step into a first water tank floating material floating in water having a specific gravity of 1.0, which is the first specific gravity, and a first water tank settling material that settles. When, floating from the first water tank sediment of the first water tank selection step, for recovering fuel material, in the second water tank, the liquid in the second specific gravity der Ru gravity 1.0 to 1.34 A second water tank sorting step of separating the second water tank floating matter into a settling second water tank settling material, and a first recovery step of dehydrating and drying the first water tank floating matter and recovering it as a raw material for chemical recycling. The second recovery step is to dehydrate and dry the suspended matter in the second water tank and recover it as a raw material for fuel.

Another form of sorting method for solving the above problems is to recycle waste containing various kinds of plastics such as automobiles, home appliances, building materials, plastic containers, and crushed plastics according to the users of recycled resources. A waste sorting method for sorting and recovering resources, in which an optical sorting step of analyzing the wavelength of the waste to remove a specific material to obtain a residue and a residue obtained by the optical sorting step are predetermined. A crushing step of crushing to a size to obtain a crushed product, an iron separation and recovery step of separating and recovering metallic magnetic materials from the crushed material by the crushing step using magnetic force, and an iron separated and recovered step of the iron content separation and recovery step. A non-iron separation and recovery step of separating and recovering non-iron contained in the separated and crushed material, and a crushing and cleaning step of further crushing and washing the crushed material treated by the iron content separation and recovery step and the non-iron content separation and recovery step. In order to recover the chemical recycling raw material from the crushed material crushed in the crushing and cleaning step , in the third water tank, the first water flow floating material floating in the first water flow corresponding to the first specific gravity and the first water flow that settles. In order to recover the raw material for fuel from the first water flow sorting step of separating into the settling material and the first water flow settling material of the first water flow sorting step, it corresponds to the second specific gravity in the fourth water tank. A second water flow sorting step of separating the second water flow suspended matter floating in the second water flow, which is faster than the first water flow, and the second water flow sediment that settles,
The third recovery step of dehydrating and drying the first water flow suspended matter and recovering it as a raw material for chemical recycling, and the fourth recovery step of dehydrating and drying the second water flow suspended material and recovering it as a raw material for fuel. It has a recovery process.

Another form of sorting method for solving the above problems is to recycle waste containing various kinds of plastics such as automobiles, home appliances, building materials, plastic containers, and crushed plastics according to the users of recycled resources. A waste sorting method for sorting and recovering resources, in which an optical sorting step of analyzing the wavelength of the waste to remove a specific material to obtain a residue and a residue obtained by the optical sorting step are predetermined. A crushing step of crushing to a size to obtain a crushed product, an iron separation and recovery step of separating and recovering metallic magnetic materials from the crushed material by the crushing step using magnetic force, and an iron separated and recovered step of the iron content separation and recovery step. A non-iron separation and recovery step of separating and recovering non-iron contained in the separated and crushed material, and a crushing and cleaning step of further crushing and cleaning the crushed material treated by the iron content separation and recovery step and the non-iron content separation and recovery step. In order to recover the chemical recycling raw material , the crushed material crushed in the crushing and cleaning step is floated in water having a specific gravity of 1.0, which is the first specific gravity, and a third water tank suspended material that is settled. In order to recover the fuel raw material from the third water tank specific gravity sorting step of separating into the water tank sediment and the third water tank sediment of the third water tank specific gravity sorting step, it corresponds to the second specific gravity in the sixth water tank. A third water flow sorting step of separating a third water flow floating substance floating in the third water flow and a third water flow settling material that settles, and dehydration and drying of the third water flow floating substance are used as a raw material for chemical recycling. The fifth collection process to collect as the target of
It has a sixth recovery step of dehydrating and drying the third water flow suspended matter and recovering it as a target for fuel raw materials.

One aspect of the method for generating recycled resources to solve the above problems is from waste containing various types of plastics such as automobiles, home appliances, building materials, plastic containers, and crushed plastics , depending on the users of the recycled resources. A method for producing recycled resources for sorting and recovering recycled resources , which is an optical sorting step of analyzing the wavelength of the waste to remove a specific material to obtain a residue, and a predetermined residue obtained by the optical sorting step. A crushing step of crushing to the size of the above to obtain a crushed product, an iron separation and recovery step of separating and recovering metallic magnetic materials from the crushed material by the crushing step using magnetic force, and an iron content separation and recovery step. A non-iron separation and recovery step for separating and recovering non-iron contained in an iron-separated and crushed product, and a crushing and cleaning step for further crushing and cleaning the crushed product treated by the iron separation and recovery step and the non-iron separation and recovery step. In order to recover the chemical recycling raw material , the crushed material crushed in the crushing and cleaning step is settled with the first water tank floating material suspended in water having a specific gravity of 1.0, which is the first specific weight. In order to recover the raw material for fuel from the first water tank sorting step of separating into one water tank sediment and the first water tank settling of the first water tank sorting step, the specific gravity of the second water tank is the second. The second water tank sorting step of separating the second water tank floating matter floating in the liquid of 1.0 to 1.34 and the second water tank settling matter which settles, and the first water tank floating matter are dehydrated and dried. It has a first recovery step of recovering as a raw material for chemical recycling, and a second recovery step of dehydrating and drying the suspended matter in the second water tank and recovering it as a raw material for fuel.

One form of sorting method to solve the above problems is to sort recycled resources from wastes containing various types of plastics such as automobiles, home appliances, building materials, plastic containers, and crushed plastics according to the users of the recycled resources. A method for sorting waste to be collected, which is an optical sorting step of analyzing the wavelength of the waste to remove a specific material to obtain a residue, and an optical sorting step of obtaining a residue, and the residue obtained by the optical sorting step to a predetermined size. A crushing step of crushing to obtain a crushed product, an iron separation and recovery step of separating and recovering a metallic magnetic material from the crushed material by the crushing step using magnetic force, and an iron separated and crushed product separated by the iron separation and recovery step. non iron separation, and non-ferrous separator recovery step of recovering the crushed material obtained by removing metal I by the iron separation and recovery step and non-ferrous separator recovery step, crushed further reduced, pulverization step of cleaning included in In the first water tank, the crushed material obtained by the crushing and cleaning step is separated into a first water tank floating material suspended in water having a specific gravity of 1.0, which is the first specific gravity, and a settling first water tank settling material. In order to recover the raw material for fuel from the 1st water tank sorting step and the 1st water tank sediment in the 1st water tank sorting step, a liquid having a specific weight of 1.0 to 1.34, which is the second specific weight, in the second water tank. A second water tank sorting step of separating the floating material in the second water tank and the settling material in the second water tank, and the first method of dehydrating and drying the floating material in the first water tank and recovering it as a raw material for chemical recycling. It has a recovery step and a second recovery step of dehydrating and drying the second water tank suspended matter and recovering it as a raw material for fuel.

Another form of sorting method for solving the above problems is from wastes including various kinds of plastics such as automobiles, home appliances, building materials, plastic containers, and crushed plastics, and recycled resources according to the users of recycled resources. This is a waste sorting method for sorting and collecting waste, in which an optical sorting step of analyzing the wavelength of the waste to remove a specific material to obtain a residue and a residue obtained by the optical sorting step have a predetermined size. A crushing step of crushing to obtain a crushed product, an iron separation and recovery step of separating and recovering a metallic magnetic material from the crushed material by the crushing step using magnetic force, and an iron separation and recovery step of separating by the iron separation and recovery step. separating the non-iron contained in the crushed, and non-ferrous separator recovery step of recovering the crushed material obtained by removing metal I by the iron separation and recovery step and non-ferrous separator recovery step, crushed further reduced, washed crushed In order to recover the chemical recycling raw materials from the crushed material crushed in the cleaning step and the crushing and cleaning step, the first water flow floating material floating in the first water flow corresponding to the first specific gravity and the sedimentation in the third water tank. In order to recover the raw material for fuel from the first water flow sorting step of separating into the first water flow settling material and the first water flow settling material of the first water flow sorting step, the second specific gravity is applied to the fourth water tank. Correspondingly, the second water flow sorting step of separating the second water flow floating matter floating in the second water flow faster than the first water flow and the second water flow sediment that settles, and the second water flow sorting step.
The third recovery step of dehydrating and drying the first water flow suspended matter and recovering it as a raw material for chemical recycling, and the fourth recovery step of dehydrating and drying the second water flow suspended material and recovering it as a raw material for fuel. It has a recovery process.

Another form of sorting method for solving the above problems is from waste including various kinds of plastics such as automobiles, home appliances, building materials, plastic containers, and crushed plastics, and recycled resources according to the users of recycled resources. This is a waste sorting method for sorting and collecting waste, in which an optical sorting step of analyzing the wavelength of the waste to remove a specific material to obtain a residue and a residue obtained by the optical sorting step have a predetermined size. A crushing step of crushing to obtain a crushed product, an iron separation and recovery step of separating and recovering a metallic magnetic material from the crushed material by the crushing step using magnetic force, and an iron separation and recovery step of separating by the iron separation and recovery step. separating the non-iron contained in the crushed, and non-ferrous separator recovery step of recovering the crushed material obtained by removing metal I by the iron separation and recovery step and non-ferrous separator recovery step, crushed further reduced, washed crushed In order to recover the chemical recycling raw materials from the crushed material crushed in the cleaning step and the crushing and cleaning step, a third water tank floating material suspended in water having a specific gravity of 1.0, which is the first specific weight, in the fifth water tank. In order to recover the raw material for fuel from the third water tank specific gravity sorting step of separating into the settling third water tank settling material and the third water tank settling material of the third water tank specific gravity sorting step, in the sixth water tank, the second The third water flow sorting step of separating the third water flow suspended matter floating in the third water flow corresponding to the specific gravity of the above and the third water flow settling material that settles, and the third water tank floating material are dehydrated and dried. , The fifth recovery process to recover as a target of chemical recycling raw materials,
It has a sixth recovery step of dehydrating and drying the third water flow suspended matter and recovering it as a target for fuel raw materials.

One aspect of the method for generating recycled resources to solve the above problems is to recycle wastes containing various types of plastics such as automobiles, home appliances, building materials, plastic containers, and crushed plastics according to the users of the recycled resources. A method for producing recycled resources for sorting and recovering resources, which is an optical sorting step of analyzing the wavelength of the waste to remove a specific material to obtain a residue, and a predetermined residue obtained by the optical sorting step. A crushing step of crushing to a size to obtain a crushed product, an iron separation and recovery step of separating and recovering metallic magnetic materials from the crushed material by the crushing step using magnetic force, and an iron separated and recovered step of the iron content separation and recovery step. separating the non-iron contained in the separation crushed, and non-ferrous separator recovery step of recovering the crushed material obtained by removing metal I by the iron separation and recovery step and non-ferrous separator recovery step, crushed further reduced, washed In the first water tank, in order to recover the chemical recycling raw material, the crushed and washed step and the crushed material finely divided in the crushed and washed step are combined with the first water tank floating material suspended in water having a specific gravity of 1.0. In order to recover the fuel raw material from the first water tank sorting step of separating into the settling first water tank settling material and the first water tank settling material of the first water tank sorting step, the second water tank is used. A second water tank sorting step of separating a second water tank floating substance floating in a liquid having a specific gravity of 1.0 to 1.34 and a second water tank settling material that settles, and dehydration of the first water tank floating material. It has a first recovery step of drying and recovering it as a raw material for chemical recycling, and a second recovery step of dehydrating and drying the suspended matter in the second water tank and recovering it as a raw material for fuel.

Claims (17)

It is a waste sorting method that sorts and collects recycled resources from wastes containing various types of plastics according to the users of the recycled resources.
Chemical Recycling In order to recover raw materials, from crushed waste crushed to a predetermined size, in the first water tank, the first water tank floating material floating in water with a specific gravity of 1.0 and the first water tank settling material that settles. The first aquarium sorting process to separate into and
In order to recover the raw material for fuel, from the first water tank sediment to the second water tank floating material floating in the liquid having a specific gravity of 1.0 to 1.34 and the second water tank sediment that settles in the second water tank. The second water tank sorting process to separate and
The first recovery step of dehydrating and drying the suspended matter in the first water tank and recovering it as "petroleum refining raw material" and "naphtha raw material" which are the targets of chemical recycling raw materials.
Sorting of waste characterized by having a second recovery step of dehydrating and drying the floating matter in the second water tank and recovering it as "cement raw material" and "industrial furnace raw material" which are the target of raw materials for fuel. Method. The waste sorting method according to claim 1.
A method for selecting waste, wherein the fuel raw material is a fuel raw material for thermal power generation. The waste sorting method according to claim 1.
The method for sorting waste, wherein the second water tank sorting step is performed before the first water tank sorting step. The waste sorting method according to claim 2.
The waste was crushed to a size of 100 mm-300 mm to obtain a crushed product.
Metallic magnetic materials are separated from the crushed material by using a magnetic force and recovered as an iron-separated crushed material.
Non-ferrous components were separated from the iron-separated crushed material and recovered as non-ferrous separated crushed material.
A method for sorting waste, which comprises putting the crushed product obtained by crushing the non-ferrous separated crushed product into a size of 5 to 100 mm into the first water tank. It is a method of generating recycled resources that sorts and collects recycled resources according to the users of the recycled resources from waste containing various types of plastics.
Chemical Recycling In order to recover raw materials, from crushed waste crushed to a predetermined size, in the first water tank, the first water tank floating material floating in water with a specific gravity of 1.0 and the first water tank settling material that settles. The first aquarium sorting process to separate into and
In order to recover the raw material for fuel, from the first water tank sediment to the second water tank floating material floating in the liquid having a specific gravity of 1.0 to 1.34 and the second water tank sediment that settles in the second water tank. The second water tank sorting process to separate and
The first recovery step of dehydrating and drying the suspended matter in the first water tank and recovering it as "petroleum refining raw material" and "naphtha raw material" which are the targets of chemical recycling raw materials.
Production of a recycled raw material characterized by having a second recovery step of dehydrating and drying the floating matter in the second water tank and recovering it as a "cement raw material" and an "industrial furnace raw material" which are targets of the raw material for fuel. Method. It is a waste sorting method that sorts and collects recycled resources from wastes containing various types of plastics according to the users of the recycled resources.
In order to recover the chemical recycling raw materials, from the crushed material obtained by crushing the waste to a predetermined size, in the third water tank, the first water flow suspended material suspended by the first water flow and the settled first water flow sediment The first water flow sorting process to separate and
In order to recover the raw material for fuel, from the first water flow sediment, the second water flow float floating in the second water flow earlier than the first water flow in the fourth water tank, and the second water flow sediment that settles. The second water flow sorting process to separate into
The third recovery step of dehydrating and drying the first water flow suspended matter and recovering it as "petroleum refining raw material" and "naphtha raw material" which are the targets of chemical recycling raw materials.
Sorting of waste characterized by having a fourth recovery step of dehydrating and drying the second water flow suspended matter and recovering it as "cement raw material" and "industrial furnace raw material" which are targets for fuel raw materials. Method. The waste sorting method according to claim 6.
A method for selecting waste, wherein the fuel raw material is a fuel raw material for thermal power generation. The waste sorting method according to claim 6.
The waste was crushed to a size of 100 mm-300 mm to obtain a crushed product.
Metallic magnetic materials are separated from the crushed material by using a magnetic force and recovered as an iron-separated crushed material.
Non-ferrous components were separated from the iron-separated crushed material and recovered as non-ferrous separated crushed material.
A method for sorting waste, which comprises putting the crushed product obtained by crushing the non-ferrous separated crushed product into a size of 5 to 100 mm into the third water tank. It is a method of generating recycled resources that sorts and collects recycled resources according to the users of the recycled resources from waste containing various types of plastics.
In order to recover the chemical recycling raw materials, from the crushed material obtained by crushing the waste to a predetermined size, in the third water tank, the first water flow suspended material suspended by the first water flow and the settled first water flow sediment The first water flow sorting process to separate and
In order to recover the raw material for fuel, from the first water flow sediment, the second water flow float floating in the second water flow earlier than the first water flow in the fourth water tank, and the second water flow sediment that settles. The second water flow sorting process to separate into
The third recovery step of dehydrating and drying the first water flow suspended matter and recovering it as "petroleum refining raw material" and "naphtha raw material" which are the targets of chemical recycling raw materials.
Generation of recycled resources characterized by having a fourth recovery step of dehydrating and drying the second water flow suspended matter and recovering it as "cement raw material" and "industrial furnace raw material" which are targets for fuel raw materials. Method. It is a waste sorting method that sorts and collects recycled resources from wastes containing various types of plastics according to the users of the recycled resources.
In order to recover the chemical recycling raw materials, from the crushed material obtained by crushing the waste to a predetermined size, in the 5th water tank, the 3rd water tank floating material floating in water having a specific density of 1.0 and the 3rd water tank settling material that settles. The third water tank specific gravity sorting process to separate into and
In order to recover the raw material for fuel, the third water flow sediment that separates the water from the third water tank sediment into a third water flow floating material that floats in the third water flow and a third water flow sediment that settles in the sixth water tank. Water flow sorting process and
The fifth recovery step of dehydrating and drying the floating matter in the third water tank and recovering it as "petroleum refining raw material" and "naphtha raw material" which are the targets of chemical recycling raw materials.
Sorting of waste characterized by having a sixth recovery step of dehydrating and drying the third water flow suspended matter and recovering it as "cement raw material" and "industrial furnace raw material" which are targets for fuel raw materials. Method. The waste sorting method according to claim 10.
As the third water tank specific gravity sorting step, a third A water tank specific gravity sorting work for separating a third A water tank floating matter floating in a heavy liquid having a specific gravity of 1.34 and a settling thirdA water tank settling material is performed in the fifth water tank. A method for sorting waste, which is characterized by having. The waste sorting method according to claim 11.
A method for selecting waste, wherein the fuel raw material is a fuel raw material for thermal power generation. The waste sorting method according to claim 11.
The waste was crushed to a size of 100 mm-300 mm to obtain a crushed product.
Metallic magnetic materials are separated from the crushed material by using a magnetic force and recovered as an iron-separated crushed material.
Non-ferrous components were separated from the iron-separated crushed material and recovered as non-ferrous separated crushed material.
A method for sorting waste, which comprises putting the crushed product obtained by crushing the non-ferrous separated crushed product into a size of 5 to 100 mm into the fifth water tank. It is a waste specific gravity sorting treatment device that sorts and collects recycled resources from wastes containing various types of plastics according to the users of the recycled resources.
A crusher that crushes waste to a predetermined size,
A magnetic force sorter that separates and recovers iron from the crushed waste produced by the crusher.
A non-ferrous metal separator that separates and recovers the non-ferrous metal of the crushed waste separated by the magnetic force sorter.
A crushing washer that crushes and cleans the crushed waste treated by the magnetic force sorter and the non-ferrous metal separator to a predetermined size, and
In order to recover the chemical recycling raw materials in the water tank, the waste crushed by the crushing washer is sorted into the first water tank suspended matter and the first water tank sediment by a liquid having a specific gravity of less than 1.00. With a water tank
The first water tank sediment is sorted into a floating second water tank floating material and a settling second water tank sediment in order to recover the fuel raw material in the water tank filled with the liquid having a specific gravity of 1.34. 2 specific gravity sorting water tank and
A dehydrator that dehydrates the floating matter in the first water tank and the floating material in the second water tank,
It has a dryer for drying the first water tank floating material and the second water tank floating material dehydrated by the dehydrating device.
The first specific gravity sorting water tank is recovered from the suspended matter in the first water tank as a raw material for chemical recycling, as a "raw material for petroleum refining" and "raw material for naphtha".
The second specific gravity sorting water tank is a waste specific gravity sorting treatment apparatus characterized in that it recovers from the suspended matter in the second water tank as "cement raw material" and "industrial furnace raw material" as a raw material for fuel. It is a waste specific gravity sorting treatment device that sorts and collects recycled resources from wastes containing various types of plastics according to the users of the recycled resources.
A crusher that crushes waste to a predetermined size,
A magnetic force sorter that separates and recovers iron from the crushed waste produced by the crusher.
A non-ferrous metal separator that separates and recovers the non-ferrous metal of the crushed waste separated by the magnetic force sorter.
A crushing washer that crushes and cleans the crushed waste treated by the magnetic force sorter and the non-ferrous metal separator to a predetermined size, and
In order to recover the chemical recycling raw materials, the crushed waste crushed by the crushing washer is sorted into a first water flow suspended matter and a first water flow sediment by a water flow corresponding to a specific gravity of less than 1.00. Water flow sorting water tank and
In order to recover the raw material for fuel, the first water flow sediment is sorted into a floating second water flow suspended material and a settling second water flow sediment by a water flow corresponding to a specific gravity of 1.34. With a water tank
A dehydrator that dehydrates the first water flow suspended matter and the first water flow sediment
It has a dryer for drying the first water flow suspended matter and the second water flow suspended matter dehydrated by the dehydrator.
The first water flow sorting water tank is recovered from the first water flow suspended matter as a raw material for chemical recycling, as a "raw material for petroleum refining" and "raw material for naphtha".
The second water flow sorting water tank is a waste specific gravity sorting treatment apparatus characterized in that it recovers from the second water flow suspended matter as "cement raw material" and "industrial furnace raw material" as a raw material for fuel. It is a waste specific gravity sorting treatment device that sorts and collects recycled resources from wastes containing various types of plastics according to the users of the recycled resources.
A crusher that crushes waste to a predetermined size,
A magnetic force sorter that separates and recovers iron from the crushed waste produced by the crusher.
A non-ferrous metal separator that separates and recovers the non-ferrous metal of the crushed waste separated by the magnetic force sorter.
A crushing washer that crushes and cleans the crushed waste treated by the magnetic force sorter and the non-ferrous metal separator to a predetermined size, and
In order to recover the chemical recycling raw materials from the crushed waste crushed by the crushing washer in the water tank, the third water tank suspended matter and the third water tank sediment are sorted by a liquid having a specific gravity of less than 1.00. With a water tank
In order to recover the raw material for fuel, the third water flow settling material is sorted into a floating third water flow floating material and a settling third water flow settling material by a water flow corresponding to a specific gravity of 1.34. With a water tank
A dehydrator for dehydrating the floating matter in the third water tank and the floating matter in the third water flow,
It has a dryer for drying the third water flow suspended matter and the third water flow suspended matter dehydrated by the dehydrating device.
The third water flow sorting water tank is recovered from the third water flow suspended matter as a raw material for chemical recycling, as a "raw material for petroleum refining" and "raw material for naphtha".
The third water flow sorting water tank is a waste specific gravity sorting treatment apparatus characterized in that it recovers from the third water flow suspended matter as "cement raw material" and "industrial furnace raw material" as a raw material for fuel. It is a waste specific gravity sorting treatment device that sorts and collects recycled resources from wastes containing various types of plastics according to the users of the recycled resources.
A crusher that crushes waste to a predetermined size,
A magnetic force sorter that separates and recovers iron from the crushed waste produced by the crusher.
A non-ferrous metal separator that separates and recovers the non-ferrous metal of the crushed waste separated by the magnetic force sorter.
A crushing washer that crushes and cleans the crushed waste treated by the magnetic force sorter and the non-ferrous metal separator to a predetermined size, and
In order to recover the chemical recycling raw materials in the water tank, the waste crushed by the crushing washer is sorted into the 3A water tank suspended matter and the 3A water tank sediment by a liquid having a specific gravity of less than 1.34. With a water tank
In order to recover the raw material for fuel, the 3A water tank sediment is sorted into a floating 3A water flow suspended material and a settling 3A water flow sediment by a water flow corresponding to a specific gravity of 1.00 to 1.20. 3A water flow sorting water tank and
A dehydrator that dehydrates the 3A water tank floating matter and the 3A water flow floating matter, and
It has a dryer for drying the 3A water tank suspended matter and the 3A water flow suspended matter dehydrated by the dehydrator.
The 3A water flow sorting water tank is recovered from the floating matter of the 3A water tank as a raw material for chemical recycling, as a "raw material for petroleum refining" and "raw material for naphtha".
The 3A water flow sorting water tank is a waste specific gravity sorting treatment apparatus characterized in that it recovers from the 3A water flow suspended matter as "cement raw material" and "industrial furnace raw material" as a raw material for fuel.

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