KR100295628B1 - Method of and apparatus for granulating waste plastic in waste plastic recycling equipment - Google Patents

Abstract

A method for pelletizing waste plastics in a waste plastic recycling facility comprising the following steps:

(A) sorting waste plastics from waste,

(B) heating and melting the sorted waste plastic in this way to remove chlorine contained in the waste plastic, and then

(C) In this way, the waste plastic from which chlorine has been removed is assembled;

And an apparatus for assembling waste plastic in a waste plastic recycling treatment plant having the following configuration:

(A) a heating device for heating and melting the waste plastic selected from the waste to remove chlorine contained in the waste plastic;

(B) an apparatus for forming the waste plastic heated and melted by the heating apparatus into a plate, rod or block; And

(C) An apparatus for forming the waste plastic into granules in the form of plates, rods or blocks.

Description

METHOD OF AND APPARATUS FOR GRANULATING WASTE PLASTIC IN WASTE PLASTIC RECYCLING EQUIPMENT}

2 is a flow chart showing an example of a conventional recycling process of waste plastics.

As shown in Fig. 2, most of the waste plastics selected from wastes are incinerated at incinerators as flammable wastes, or are buried in the ground as non-combustible wastes. In recent years, however, the lack of landfills for dumping garbage into the ground has been a problem.

There are various kinds of waste plastics such as bottle types, films, sheets, films such as bags and trays, and other shapes. When incineration of waste plastics incinerators, plastics containing chlorine such as polyvinyl chloride and polyvinylidene chloride (hereinafter referred to as `` chlorine-containing plastics '') There is a serious problem of generating harmful hydrogen chloride gas by thermal decomposition. Therefore, the equipment for incineration of waste plastics has a recovery device or neutralization device for hydrogen chloride.

Background Art Conventionally, waste plastics are generally used as fuel for power generation, recycled raw materials for plastics, and recycled processed products. In addition, emulsification of waste plastics is also performed. Emulsification of waste plastics creates residues, so the waste plastics emulsification equipment needs to be equipped with a residue treatment device or the residues must be disposed of in the ground.

Plastics are known to have high calorie values. Therefore, it is desired to recycle waste plastics as raw materials or fuels. However, as described above, since the waste plastic contains chlorine-containing plastics such as polyvinyl chloride and polyvinylidene chloride, hydrogen chloride gas is generated when the waste plastic selected from the waste is burned as it is. Since the hydrogen chloride gas has the property of corroding the metal part of the combustion plant, it is necessary to remove chlorine from the waste plastic in advance so that hydrogen chloride gas does not occur when burning the waste plastic.

The present invention relates to a method and apparatus for pelletizing waste plastics selected from wastes for reuse.

1 is a flow chart of an assembly method showing one embodiment of the present invention;

2 is a flow chart showing a conventional waste plastic recycling method;

3 is a perspective view of an assembly device showing a first embodiment of the present invention;

4 is a side view of the assembling apparatus showing the first embodiment of the present invention;

5 is a cross-sectional view taken along the line A-A of FIG. 4 of the assembling apparatus showing the first embodiment of the present invention;

FIG. 6 is a plan view of the first cutting roller shown in FIG. 3; FIG.

FIG. 7 is a plan view of the first cutting roller shown in FIG. 3; FIG.

FIG. 8 is a side view of the first cutting roller shown in FIG. 7; FIG.

9 is a plan view of the second cutting roller shown in FIG. 3;

10 is a side view of the second cutting roller shown in FIG. 9;

11 is a side view illustrating a state in which a gap between rollers of a pair of first cutting rollers is adjusted;

FIG. 12 is a side view of FIG. 11 illustrating a state of adjusting a spacing between rollers of a pair of first cutting rollers; FIG.

FIG. 13 is a side view illustrating a state in which a gap between rollers of a pair of first cutting rollers is adjusted; FIG.

FIG. 14 is a side view of FIG. 13 illustrating a state of adjusting a spacing between rollers of a pair of first cutting rollers; FIG.

15 is a side view illustrating a state in which a gap between rollers of a pair of first cutting rollers is adjusted;

FIG. 16 is a side view of FIG. 16 illustrating a state of adjusting a spacing between rollers of a pair of first cutting rollers; FIG.

17 is a side view illustrating a state in which a gap between rollers of a pair of first cutting rollers is adjusted;

FIG. 18 is a side view of FIG. 17 illustrating a state of adjusting a spacing between rollers of a pair of first cutting rollers; FIG.

19 is a side view illustrating a state in which a gap between rollers of a pair of first cutting rollers is adjusted;

20 is a side view of FIG. 19 illustrating a state of adjusting a spacing between rollers of a pair of first cutting rollers;

Fig. 21 is a perspective view of an assembling apparatus showing a second embodiment of the present invention;

FIG. 22 is a bottom view of the die shown in FIG. 21; FIG.

Figure 23 is a bottom view of a die used in the third embodiment of the present invention;

24 is a bottom view of a die used in the fourth embodiment of the present invention;

25 is a perspective view of an assembling apparatus showing a fifth embodiment of the present invention;

Fig. 26 is a plan view of an assembling apparatus showing a fifth embodiment of the present invention;

27 is a side view of an assembling apparatus showing a fifth embodiment of the present invention;

28 is a top view of the assembly machine shown in FIG. 25;

FIG. 29 is a perspective view of the assembly machine shown in FIG. 28;

30 is a cross-sectional view taken along the line A-A shown in FIG. 28;

FIG. 31 is a sectional view taken along line B-B shown in FIG. 28;

32 is a perspective view of an assembling apparatus showing a sixth embodiment of the present invention;

33 is a side view of an assembling apparatus showing a sixth embodiment of the present invention;

34 is a plan view of an assembling apparatus showing a sixth embodiment of the present invention;

35 is a side view of an assembly device showing a seventh embodiment of the present invention;

36 is a plan view of an assembling apparatus showing a seventh embodiment of the present invention;

37 is a side view of an assembling apparatus showing an eighth embodiment of the present invention;

38 is a plan view of an assembling apparatus, showing an eighth embodiment of the present invention;

39 is a perspective view of an assembling apparatus showing a ninth embodiment of the present invention;

40 is a cross-sectional view of the extruder and cylindrical cutter shown in FIG. 39;

FIG. 41 is a cross sectional view of the extruder and cylindrical cutter shown in FIG. 39; FIG.

FIG. 42 is a sectional view of a portion A shown in FIG. 40; FIG.

FIG. 43 is a sectional view of a portion A shown in FIG. 41; FIG.

44 is a top view of the extruder shown in FIG. 35;

45 is a cross-sectional view taken along the line B-B shown in FIG. 44;

46 is a plan view of the cylindrical cutter shown in FIG. 39;

FIG. 47 is a cross-sectional view taken along line C-C shown in FIG. 46;

48 is a perspective view of an assembling apparatus showing a tenth embodiment of the present invention;

FIG. 49 is a plan view of the assembly machine shown in FIG. 48; FIG.

FIG. 50 is a perspective view of the assembly machine shown in FIG. 49; FIG.

FIG. 51 is a sectional view taken along the line A-A shown in FIG. 49; FIG.

FIG. 52 is a sectional view taken along the line B-B shown in FIG. 49; FIG.

Accordingly, an object of the present invention is to recycle waste plastics which can produce pelletized grains of waste plastics in which hydrogen chloride gas is not generated during combustion so that waste plastics selected from wastes can be used as fuel and raw materials. A method and apparatus for pelletizing waste plastics in a facility are provided.

According to one aspect of the present invention there is provided a method for assembling waste plastic in a waste plastic recycling facility, comprising the following steps:

(A) waste plastics are sorted from the waste;

(B) The waste plastics thus selected are heated and melted to remove chlorine contained in the waste plastics.

(C) Assemble the waste plastic from which chlorine is removed.

According to another aspect of the present invention, there is further provided a method for assembling waste plastic in a waste plastic regeneration treatment plant, wherein the waste plastic thus assembled is used in a blast furnace as a raw material for steelmaking. .

According to still another aspect of the present invention, there is provided an apparatus for assembling waste plastic in a waste plastic recycling treatment plant having the following configuration:

(A) a heating apparatus for heating and melting the waste plastic selected from the waste to remove chlorine contained in the waste plastic;

(B) at least one pair of squeezing rollers disposed below the heating apparatus for stretching the waste plastic heated and melted by the heating apparatus into plates, wherein the at least one pair of squeezing rollers is horizontal Facing each other at a predetermined interval in the direction;

(C) disposed below said at least one pair of squeegee rollers for cutting said waste plastics formed into a plate shape by said at least one pair of squeegee rollers into a plurality of rod-shaped bodies in the stretching direction. The pair of first cutting rollers, the pair of first cutting rollers face each other at a predetermined interval in the horizontal direction, and each of the pair of first cutting rollers is formed on its outer peripheral surface. Has a plurality of annular blade portions in the circumferential direction, and the annular blade portion of one of the pair of first cutting rollers is annular to the other side of the pair of first cutting rollers. In contact with the blade; And

(D) a pair of second disposed below the pair of first cutting rollers for cutting the waste plastic formed into rod-shaped bodies by the pair of first cutting rollers into granular bodies; The cutting roller, the pair of second cutting rollers face each other at a predetermined interval in the horizontal direction, and each of the pair of second cutting rollers has a plurality of straight blades in its axial direction on its outer circumferential surface. And the straight blade portion on one side of the pair of second cutting rollers is in contact with the straight blade portion on the other side of the pair of second cutting rollers.

According to still another aspect of the present invention, there is provided an apparatus for assembling waste plastic in a waste plastic recycling treatment facility, wherein the at least one pair of squeezing rollers, the pair of first cutting rollers, and the pair of seconds The predetermined interval between the rollers of the cutting rollers is adjustable according to the size of the foreign materials when a hard foreign matter larger than the predetermined intervals is mixed in the waste plastic, and as a result, the at least one pair of An apparatus for assembling waste plastic is further provided in a waste plastic recycling treatment facility in which breakage of a squeegee roller, the pair of first cutting rollers, and the pair of second cutting rollers is prevented.

According to still another aspect of the present invention, there is further provided an apparatus for assembling waste plastic in a waste plastic recycling facility, having the following configuration:

(A) A heating apparatus for heating and melting the waste plastic separated from the waste to remove chlorine contained in the waste plastic;

(B) an extruder disposed below the heating device for receiving the waste plastic heated and melted by the heating device and extruding the waste plastic into a rod-shaped body, the extruder comprising: a container for containing the heated melt plastic waste; And a die having a plurality of holes for extruding the waste plastic in the container to form a rod-shaped body having a predetermined cross-sectional shape, which is installed at the bottom of the container. It is formed of the number of rod-shaped bodies corresponding to the number of the plurality of holes having a cross-sectional shape matching the shape of;

(C) a cooler disposed below the extruder for cooling and solidifying the waste plastic of the rod-shaped body extruded from the die with a cooling medium; And

(D) a cutter disposed below the cooler for cutting the waste plastic of the rod-shaped solidified by the cooler into a granular body.

According to still another aspect of the present invention, there is further provided an apparatus for assembling waste plastic in a waste plastic recycling facility, having the following configuration:

(A) a heating apparatus for heating and melting the waste plastic selected from the waste to remove chlorine contained in the waste plastic;

(B) a cooling tank accommodating cooling water disposed below the heating apparatus for solidifying the waste plastic heated by the heating apparatus by contact with the cooling water and solidifying into a bulk;

(C) a conveying machine for carrying out the bulky waste plastic solidified in the cooling tank from the cooling tank; And

(D) an assembling machine for assembling the bulky waste plastic conveyed by the conveying machine, the assembling machine is constituted as follows:

(a) a plurality of rotary blades of the same radius having a plurality of sharp teeth each on its outer circumferential surface, the plurality of rotating blades comprising a first group of a plurality of rotating blades arranged on the same horizontal axis; And a second group of a plurality of rotating blades disposed on another horizontal axis, wherein the plurality of rotating blades of the first group and the plurality of rotating blades of the second group rotate in opposite directions. The plurality of rotary blades of the first group and the plurality of rotary blades of the second group are each disposed at substantially the same interval as the thickness of the rotary blades, and each of the plurality of rotary blades of the first group A portion of which is inserted into each of the gaps of the plurality of rotary blades of the second group It was, and

(b) a plurality of stationary blades having a curvature surface of substantially the same radius as the outer circumferential surfaces of the plurality of rotating blades, each of the plurality of fixed blades is disposed for each of the plurality of rotating blades, and the plurality of fixed blades The curved surface of each of the blades coincides with the outer peripheral surface of each of the plurality of rotating blades,

In this way, the bulky waste plastic is cut into granules by the plurality of sharp teeth and the plurality of fixed blades.

According to still another aspect of the present invention, there is further provided an apparatus for assembling waste plastic in a waste plastic recycling facility, having the following configuration:

(A) a heating apparatus for heating and melting the waste plastic selected from the waste to remove chlorine contained in the waste plastic;

(B) a mesh partition disposed below the heating device for retaining the waste plastic heated and melted by the heating device; And

(C) A cooling medium injector for cutting the waste plastic into granules by injecting a cooling medium into the waste plastic remaining on the mesh partition to pass the mesh partition while cooling and solidifying the waste plastic.

According to still another aspect of the present invention, there is further provided an apparatus for assembling waste plastic in a waste plastic recycling facility, having the following configuration:

(A) a heating apparatus for heating and melting the waste plastic selected from the waste to remove chlorine contained in the waste plastic;

(B) an extruder disposed below the heating apparatus for receiving and extruding the waste plastic heated and melted by the heating apparatus, the extruder having a semicircle at the bottom thereof for receiving the heated molten plastic waste Extruding the waste plastic in the container, provided in a container having a normal hollow portion, and in the semi-cylindrical hollow portion of the container, to form a rod-shaped body having a predetermined cross-sectional shape; A die having a plurality of holes for forming the waste plastic, thereby forming a number of rod-shaped bodies corresponding to the number of the plurality of holes having a cross-sectional shape corresponding to the shape of the hole;

(C) a rotatable cylindrical cutter formed with a plurality of slits in the axial direction, disposed below the extruder, for cutting the waste plastic of the rod-shaped body extruded from the die into a granular body, the cylindrical The cutter is arranged such that its outer peripheral surface coincides with the inner peripheral surface of the semi-cylindrical depression of the container; And

(D) A cooler for cooling the waste plastic of the rod-shaped body extruded from the die by a cooling medium.

According to still another aspect of the present invention, there is further provided an apparatus for assembling waste plastic in a waste plastic recycling facility, having the following configuration:

(A) a heating apparatus for heating and melting the waste plastic selected from the waste to remove chlorine contained in the waste plastic;

(B) at least one pair of squeegeeing rollers disposed below the heating device for stretching the waste plastic heated and melted by the heating device into a plate shape, wherein the at least one pair of squeezing rollers is a predetermined direction in the horizontal direction. Facing each other at intervals, and cooling water is circulated inside the at least one squeegeeing roller described above; And

(C) an assembly machine disposed below the at least one pair of squeegee rollers for assembling the waste plastic formed into plates by the at least one pair of squeegee rollers, the assembly machine being configured as follows:

(a) a plurality of rotating blades of the same radius having a plurality of sharp teeth each on its outer circumferential surface, the plurality of rotating blades comprising a first group of the plurality of rotating blades arranged on the same horizontal axis, and And a second group of a plurality of rotating blades disposed on another horizontal axis, wherein the plurality of rotating blades of the first group and the plurality of rotating blades of the second group rotate in opposite directions to each other. The plurality of rotary blades of the first group and the plurality of rotary blades of the second group are each disposed at substantially the same interval as the thickness of the rotary blades, and each part of each of the plurality of rotary blades of the first group Is inserted into each of said gaps of said plurality of rotary blades of said second group. He said, and

(b) a plurality of stationary blades having a curvature surface of substantially the same radius as the outer circumferential surfaces of the plurality of rotating blades, each of the plurality of fixed blades is disposed for each of the plurality of rotating blades, and the plurality of fixed blades The curved surface of each of the blades coincides with the outer peripheral surface of each of the plurality of rotating blades,

In this way, the plate-shaped waste plastic is cut into granules by the plurality of sharp teeth and the plurality of fixed blades.

Next, a method of assembling the waste plastic in the waste plastic recycling treatment facility of the present invention will be described with reference to the drawings.

1 is a flow chart showing a first embodiment of the assembling method of the present invention.

As shown in Fig. 1, the waste is collected in the waste collection process (2) by the municipality (1) and is housed in a bag or the like. Subsequently, in the sorting step (3), the bag is broken and the waste plastic is discharged from the bag. Then, the bag is sorted from the waste by a sorting means such as a wind sorting method and a magnetic sorting method. The waste plastics selected from the waste are then crushed to a size suitable for heat melting in the crushing process 4, and then chlorine is removed from the waste plastics in the chlorine removal process 5. In the chlorine removal step (5), the waste plastic is heated and melted by a heating device to crack the chlorine-containing plastic contained in the waste plastic (pyrolysis). Hydrogen chloride gas is generated by heat melting the waste plastic, and the hydrogen chloride gas thus generated is recovered in an aqueous solution (hydrochloric acid) state in the hydrochloric acid recovery step (6). This removes the chlorine contained in the waste plastic. Waste plastics from which chlorine has been removed are assembled in a pelletizing process (7). The assembled waste plastic can be used as fuel or raw material. For example, pelletized grains of waste plastic can be used as raw material for steelmaking in blastfurnace. In addition, the waste plastic assembly can be widely used as a fuel for cement kiln.

Next, the apparatus for assembling the waste plastic in the waste plastic recycling apparatus of the present invention will be described in detail with reference to the drawings.

3 is a perspective view of an assembling apparatus showing a first embodiment of the present invention, FIG. 4 is a side view of an assembling apparatus showing a first embodiment of the present invention, and FIG. 5 is a view of an assembling apparatus showing a first embodiment of the present invention. 4 is a cross-sectional view taken along line AA, FIG. 6 is a plan view of the first cutting roller shown in FIG. 3, FIG. 7 is a plan view of the first cutting roller shown in FIG. 3, FIG. 8 is a side view of the first cutting roller shown in FIG. 3 is a plan view of the second cutting roller shown in FIG. 3, FIG. 10 is a side view of the second cutting roller shown in FIG. 9, FIG. 11 is a side view showing a state of adjusting the spacing between the rollers of the pair of first cutting rollers, FIG. 11 is a side view of FIG. 11 showing a state of adjusting the spacing between the rollers of the pair of first cutting roller, FIG. 13 is a side view showing a state of adjusting the spacing between the rollers of the pair of first cutting rollers, FIG. Of the first cutting roller Figure 13 is a side view showing a state of adjusting the distance between the roller, Figure 15 is a side view showing a state of adjusting the distance between the roller of the pair of first cutting roller, Figure 16 is a view between the roller of the pair of first cutting roller Figure 16 is a side view showing a state of adjusting the spacing, Figure 17 is a side view showing a state of adjusting the spacing between the rollers of a pair of first cutting roller, Figure 18 is a distance between the rollers of a pair of first cutting roller FIG. 17 is a side view illustrating a state of adjusting the distance between the rollers of the pair of first cutting rollers, and FIG. 20 is a side view illustrating the state of adjusting the distance between the rollers of the pair of first cutting rollers. It is a side view of FIG.

3 to 20, the assembling apparatus of the present invention has a heating device 10, two pairs of squeegeeing rollers 11 arranged below the heating device 10, and two pairs of squeezing rollers 11 below. It consists of a pair of 1st cutting roller 12 arrange | positioned, and a pair of 2nd cutting roller 13 arrange | positioned under a pair of 1st cutting roller 12. As shown in FIG. Two pairs of squeezing rollers 11, a pair of first cutting rollers 12 and a pair of second cutting rollers 13 are rotating in opposite directions as indicated by arrows in FIG. The chlorine-containing plastic contained in the waste plastic selected from the waste is pyrolyzed using the heating device 10. Hydrogen chloride gas generated by heat melting the waste plastic is recovered in hydrochloric acid. This will remove the chlorine contained in the waste plastic.

The two pairs of squeegeeing rollers 11 are installed to face each other at predetermined intervals between the rollers in the horizontal direction. In addition, only one pair of squeegee rollers 11 may be provided. The waste plastic 9 heated and melted by the heating device 10 is stretched into a plate using two pairs of squeegee rollers 11.

The pair of first rollers 12 are installed to face each other at predetermined intervals between the rollers in the horizontal direction. The pair of first cutting rollers 12 has a plurality of annular blade portions 12a in the circumferential direction on the outer circumferential surface thereof. One annular blade portion 12a of the pair of first cutting rollers 12 is in contact with the other annular blade portion 12a of the pair of first cutting rollers 12. The plate-shaped waste plastic 9a stretched by the pair of squeegee rollers 11 is cut into a plurality of rods 9b in the stretching direction by the pair of first cutting rollers 12.

The pair of second cutting rollers 13 are installed to face each other at predetermined intervals between the rollers in the horizontal direction. The pair of second cutting rollers 13 has a plurality of straight blade portions 13a in the axial direction on the outer circumferential surface thereof. One linear blade portion 13a of the pair of second cutting rollers 13 is in contact with the other linear blade portion 13a of the pair of second cutting rollers 13. The waste plastic rod 9b formed into a rod-shaped body by the pair of first cutting rollers 12 is cut by the pair of second cutting rollers 13 to form a granular body 9c of the waste plastic. Is assembled. The particle size of the granules 9c is adjusted to about 8 mm. In order to use it as a raw material for steelmaking, it is preferable to make the particle size of the granular body 9c into 8 mm or less. However, since the particle size of the granular body 9c can be changed according to its use, there is no need to specifically limit the particle size of the granular body 9c.

Hard foreign matter may be mixed in the waste plastic. When the size of the foreign material is larger than the distance between two rollers facing each other in the pair of squeezing rollers 11, the pair of first cutting rollers 12 and the pair of second cutting rollers, the respective rollers 11 , The rollers 12 and 13, and the blade portions 12a and 13a of the cutting rollers 12 and 13 are broken. Therefore, a predetermined distance between two pairs of squeezing rollers 11, a pair of first cutting rollers 12, and a pair of second cutting rollers is larger than a predetermined distance between the rollers. Can be adjusted according to the size of the foreign material. This adjustment is described with reference to FIGS. 11 to 20 by taking a pair of first cutting rollers 12 as an example. In this case, the foreign material 20 is shown by diagonal lines in FIGS. 12, 14, 16, 18, and 20.

In FIGS. 11 to 21, 21 is a holder for supporting a pair of first cutting rollers 12. As shown in FIGS. 11-12, the 2nd gear 15 is provided in the circumferential direction on each outer peripheral surface of a pair of 1st cutting roller 12. As shown in FIG. Hereinafter, although one side of a pair of 1st cutting roller 12 is demonstrated, the other side of a pair of 1st cutting roller 12 has the same structure. Power of the driving source is transmitted to the first cutting roller 12 through the first gear 14 and the second gear 15. The rotating shaft of the first shaft 19 is provided coaxially with the rotating shaft of the first cutting roller 12. The second shaft 16 is fixed to the holder 21. A spring 17 is disposed between the first shaft 19 and the second shaft 16. The holder 21 is formed with a guide hole 18 concentrically with the pitch circle of the first gear 14. The first cutting roller 12 is pressed toward the a side end of the guide hole 18 by the spring 17 via the first shaft 19.

As shown in FIGS. 13 to 20, when the foreign matter 20 larger than a predetermined distance between the rollers of each of the pair of first cutting rollers 12 is mixed in the waste plastic, the foreign material 20 is first used. As shown in FIG. 14, the pair of first cutting rollers comes into contact with each other. When the foreign material 20 comes into contact with the pair of first cutting rollers 12, the first cutting roller 12 in contact with the foreign material 20 follows the guide hole 18 along the guide hole 18 as shown in FIGS. 15 to 18. Slowly move towards the side end. Since the pair of first cutting rollers 12 are pulled toward the a side end of the guide hole 18 by the springs 17, the first cutting rollers 12 over the foreign material 20 are shown in Figs. Return to the original position as shown. In the manner described above, it is possible to prevent the driving stop of the apparatus by the foreign material 20 and the damage of the roller and the blade portion of the pair of first cutting rollers 12.

Also, since each roller of the pair of first cutting rollers 12 has the above-described mechanism, the foreign material 20 having no symmetrical shape as shown in FIGS. 19 and 20 is also shown in FIGS. 19 and 20. As shown, each roller of the pair of first cutting rollers 12 may independently ride over the foreign material 20.

Although only the pair of first cutting rollers 12 has been described above, the two pairs of squeezing rollers 11 and the pair of second cutting rollers 13 have the same mechanism.

Fig. 21 is a perspective view of the assembling apparatus showing the second embodiment of the present invention, and Fig. 22 is a bottom view of the die shown in Fig. 21.

The assembly apparatus of the present invention shown in FIG. 21 and FIG. 22 is comprised of the heating apparatus 10, the cooler 27 arrange | positioned under the heating apparatus 10, and the cutter 28 arrange | positioned under the cooler 27. .

Waste plastics selected from the waste are heated and melted at a temperature of about 350 ° C. using a heating apparatus 10 to pyrolyze the chlorine-containing plastic contained in the waste. Hydrogen chloride gas generated by heat melting the waste plastic is recovered in hydrochloric acid. This removes the chlorine contained in the waste plastic.

The extruder 22 is comprised of the container 33 which accommodates the waste plastic 9 heated and melted by the heating apparatus 10, and the die 26 provided in the bottom of this container 33. As shown in FIG. As shown in FIG. 22, a plurality of circular holes 23 are formed in the die 26. The waste plastic 9 heated and melted by the heating device 10 is accommodated in the container 33, and the waste plastic 9 contained in the container 33 is extruded from the die 26 to form a circular hole 23. It is formed of a rod-like body 9d having a circular cross section of a number corresponding to the number.

The cooler 27 has an injector (not shown) capable of injecting water. The plurality of waste plastic rod-like bodies 9d extruded from the die 26 are cooled and solidified by water injected in the cooler 27. As a cooling medium, air may be used instead of water.

The cutter 28 has a rotating blade (not shown in the figure). The rod-like body 9e of waste plastics cooled and solidified by the cooler 27 is cut by the cutting machine 28 to form a granular body 9f of waste plastics.

Figure 23 is a bottom view of a die used in the third embodiment of the present invention.

In the third embodiment of the assembling apparatus of the present invention, the die 26 shown in FIG. 21 differs from the assembling apparatus of the second embodiment only in that it has a plurality of triangular holes 24 as shown in FIG.

24 is a bottom view of a die used in the fourth embodiment of the assembling apparatus of the present invention.

In the fourth embodiment of the assembling apparatus of the present invention, the die 26 shown in FIG. 21 differs from the assembling apparatus of the second embodiment only in that it has a plurality of rectangular holes 25 as shown in FIG.

25 is a perspective view of an assembling apparatus showing a fifth embodiment of the assembling apparatus of the present invention, FIG. 26 is a plan view of an assembling apparatus showing a fifth embodiment of the present invention, and FIG. 27 shows a fifth embodiment of the present invention. 28 is a plan view of the assembly machine shown in FIG. 25, FIG. 29 is a perspective view of the assembly machine shown in FIG. 28, FIG. 30 is a sectional view of the AA line shown in FIG. 28, and FIG. 31 is a sectional view of the BB line shown in FIG. .

The assembly apparatus of the present invention shown in FIGS. 25-31 cools down the heating apparatus 10, the cooling tank 29 arrange | positioned under the heating apparatus 10, and the massive waste plastic solidified in the cooling tank 29. The belt conveyor 30 carried out from the tank 29 and the granulator 33 which assembles the bulk waste plastic carried out by the belt conveyor 30 are comprised.

Waste plastics selected from the wastes are heated and melted at a temperature of about 350 ° C. using a heating apparatus 10 to pyrolyze the chlorine-containing plastic contained in the wastes. Hydrogen chloride gas generated by heating and melting waste plastic is recovered in hydrochloric acid. This removes the chlorine contained in the waste plastic.

The cooling water 31 is accommodated in the cooling tank 29. The outlet of the heating device 10 is provided in the cooling water 31. This discharge port may be provided at a position slightly higher than the surface of the cooling water 31.

In the cooling tank 29, the inclined plate 32 is provided below the heating apparatus 10, and one wall of the cooling tank 29 is provided with the inclined part 29a. The belt conveyor 30 is provided in the inclination part 29a at the same inclination angle as the inclination angle of the inclination part 29a. The lower portion of the inclined surface of the belt conveyor 30 is provided below the inclined plate 32, and the upper portion of the inclined surface of the belt conveyor 30 extends outward of the cooling tank 29.

A granulator 33 is provided below the upper end of the belt conveyor 30 extending outward of the cooling tank 29. This granulator 33 has a plurality of disk-shaped rotating blades 34 having the same radius. The plurality of rotary blades 34 each has a plurality of sharp teeth 34a on its outer circumferential surface. The plurality of rotary blades 34 is of a first group A and a second group B, the first group A having a plurality of rotary blades 34 arranged on a horizontal shaft shaft 38, the second group B has a plurality of rotating blades 34 arranged on another horizontal shaft 38 in the same horizontal position as the horizontal shaft shaft 38 of the group A above. The plurality of rotary blades 34 of the first group A and the plurality of rotary blades 34 of the second group B rotate in opposite directions as indicated by arrows in FIG. 29. The plurality of rotary blades 34 of the first group A and the plurality of rotary blades 34 of the second group B are each disposed at substantially the same interval as the thickness t of the rotary blade 34. A part of each of the plurality of rotary blades 34 of the first group A is inserted into each of the aforementioned gaps of the plurality of rotary blades 34 of the second group B. The granulator 33 is installed in the casing 39.

The granulator 33 has a plurality of stationary blades 35. Each of the plurality of stationary blades 35 is disposed at a position corresponding to each of the plurality of rotating blades 34. The plurality of stationary blades 35 has a curved surface 35a having a radius substantially the same as the outer circumferential surface of the plurality of rotating blades 34. Each curved surface 35a of the plurality of stationary blades 35 coincides with an outer circumferential surface of each of the plurality of rotating blades 34.

The waste plastic 9 heated and melted by the heating device 10 is cooled in the cooling water 31 accommodated in the cooling tank 29 and solidified in a block. The massive waste plastic 9g slides down the upper surface of the inclined plate 32 provided in the cooling tank 31 and reaches the belt conveyor 30. The massive waste plastic 9g reaching the belt conveyor 30 is carried out from the cooling tank 29 to the upper part of the granulator 33 by the belt conveyor 30, and the plurality of rotating blades 34 in the granulator 33 are carried out. ) And a plurality of fixed blades 35 fall. The dropped bulky plastic 9g has a plurality of sharp teeth 34a of the plurality of rotary blades 34 and a plurality of curved surfaces 35a of the plurality of fixed blades 35 shown in FIGS. 28 and 30. The thickness t of the rotary blade 34 and the pitch p of the rotary blade 34 are formed by the cut portions 37 at the points 37 and the plurality of cut portions 36 shown in FIG. 28 by the plurality of rotary blades 34. It is cut into granules 9h of waste plastic having a dimension of.

The thickness t of the rotary blade 34 and the fixed blade 35 is set to 6 mm, and the diameter of the rotary blade 34 is set to 200 mm. Therefore, the particle size of the granular body 9h to be cut is 6 mm. However, the particle size of the granular body 9h may vary depending on the use, and thus is not limited to the above-described dimensions.

32 is a perspective view of an assembling apparatus showing a sixth embodiment of the present invention, FIG. 33 is a side view of an assembling apparatus showing a sixth embodiment of the present invention, and FIG. 34 is a plan view of an assembling apparatus showing a sixth embodiment of the present invention. to be.

The assembly apparatus of the present invention shown in FIG. 32, 33, and 34 is comprised from the heating apparatus 10, the mesh partition 41 arrange | positioned under the heating apparatus, and the cooling water injection nozzle 42. As shown in FIG.

Waste plastics selected from the wastes are heated and melted at about 350 ° C. using the heating device 10 to pyrolyze the chlorine-containing plastic contained in the waste plastics. The hydrogen chloride gas generated by heating and melting the waste plastic is recovered in the hydrochloric acid state. This removes the chlorine contained in the waste plastic.

The reticulated partition 41 is provided horizontally below the heating device 10, and on the left and right sides above the reticulated partition 41, toward the center of the reticulated partition 41, about 45 from the outside to the center. Two coolant injection nozzles 42 are provided to be inclined downward at an angle of °. The inclination angles of the two injection nozzles 42 may be varied between 45 ° and 90 °. Cooling water 44 is injected at a high pressure from the tip of two spray nozzles 42. 43 is a hose connected to the injection nozzle 42. Instead of water, air may be used as the cooling medium.

The waste plastic 9 heated and melted by the heating device 10 stays on the reticulated partition 41. In this way, when cooling water is injected from the spray nozzle 42 to the waste plastic 9 remaining on the mesh partition 41, the waste plastic 9 is sprayed at a high pressure from the spray nozzle 42 on the mesh partition 41. Pressurized downward by the cooling water. This pressure and the mesh of the mesh partition 41 are cut into granules having a size passing through the mesh partition 41. The size of the granular material 9I of the waste plastic can be changed depending on the size of the mesh of the reticulum partition 41.

Fig. 35 is a side view of the assembling apparatus showing the seventh embodiment of the present invention, and Fig. 36 is a plan view of the assembling apparatus showing the seventh embodiment of the present invention.

35 and 36, in the seventh embodiment of the assembling apparatus of the present invention, a cooling medium injector different from the cooling water injection nozzle 42 shown in FIG. different. Therefore, only the cooling medium injector will be described.

As shown in FIG. 35 and FIG. 36, the circular pipe 46 is horizontally arrange | positioned above the mesh partition 41, and the some injection hole 45 is formed in the inner peripheral surface of the circular pipe 46. As shown in FIG. The plurality of injection holes 45 are inclined downwardly at an angle of about 45 ° toward the center of the mesh partition 41. The cooling water 44 is injected at a high pressure from each of the plurality of injection holes 45. The waste plastic 9, which is melted by the heating device 10 and stays on the reticulated partition 41, is assembled as in the sixth embodiment shown in FIG. 32 by the cooling water injected at a high pressure from the injection hole 45. .

37 is a side view of the assembling apparatus showing the eighth embodiment of the present invention, and FIG. 38 is a plan view of the assembling apparatus showing the eighth embodiment of the present invention.

37 and 38, in the eighth embodiment of the assembling apparatus of the present invention, a cooling medium injector different from the cooling water injection nozzle 42 shown in Fig. 32 is provided. different. Therefore, only the cooling medium injector will be described.

As shown in FIG. 37 and FIG. 38, the U-shaped pipe 47 is horizontally arrange | positioned above the mesh partition 41. FIG. A plurality of injection holes 48 are formed on the inner circumferential surface of the U-shaped tube 47 facing each other. The plurality of injection holes 48 are inclined downwardly at an angle of about 45 ° toward the center of the mesh partition 41. The cooling water 44 is injected at a high pressure from each of the plurality of injection holes 48. The waste plastic 9, which is melted by the heating device 10 and stays on the mesh partition 41, is assembled in the same manner as in the sixth embodiment shown in FIG. 32 by the cooling water injected at a high pressure from the injection hole 48. .

FIG. 39 is a perspective view of an assembly apparatus showing a ninth embodiment of the present invention, FIG. 40 is a sectional view showing the extruder and the cylindrical cutter shown in FIG. 39, FIG. 41 is a sectional view showing the extruder and the cylindrical cutter shown in FIG. 40 is a cross-sectional view of the portion A shown in FIG. 40, FIG. 43 is a cross-sectional view of the portion A shown in FIG. 41, FIG. 44 is a plan view of the extruder shown in FIG. 35, FIG. 45 is a cross-sectional view of the line BB in FIG. Top view of the cutter, FIG. 47 is a cross-sectional view of the CC line shown in FIG. 46.

39 to 47, the assembly apparatus of the present invention includes a heating device 10, an extruder 50 disposed below the heating device 10, and a rotatable cylindrical cutter 54 disposed below the extruder 50. And a cooler (not shown in the figure).

Waste plastics selected from the waste are heated and melted at about 350 ° C. using the heating device 10 to pyrolyze the chlorine-containing plastic contained in the waste plastic. Hydrogen chloride gas generated by heat melting the waste plastic is recovered in hydrochloric acid. This removes the chlorine contained in the waste plastic.

The extruder 50 is composed of a container 51 having a semi-cylindrical hollow portion at the bottom, and a die 52 provided in the semi-cylindrical hollow portion at the bottom of the container 51. have. The die 52 has a plurality of circular holes 53, and the container 51 accommodates the waste plastic 9 which is heated and melted by the heating device 10. The waste plastic 9 contained in the container 51 is extruded from the die 52 and formed into a rod-shaped body having a circular cross-sectional shape of a number corresponding to the number of the plurality of holes 53.

The outer peripheral surface of the cylindrical cutter 54 is arrange | positioned so that it may correspond with the inner peripheral surface of the semi-cylindrical recess of the bottom part of the container 51. As shown in FIG. The cylindrical cutter 54 is formed with a plurality of slits 55 in the axial direction. The waste plastic 9 in the container 51 formed and extruded from the die 52 is cut into granular bodies 9j by the rotating cylindrical cutter 54.

In the periphery of the cylindrical cutter 54, a plurality of cooling water injection nozzles not shown in the figure are provided surrounding the main surface of the cylindrical cutter 54. As shown in FIGS. 40 to 43, the waste plastic 9 extruded from the die 52 and the granules 9j of the waste plastic cut by the cylindrical cutter 54 are provided with a plurality of cooling water jet nozzles not shown in the drawing. It is cooled by the cooling water injected from. Air may be used as the cooling medium used by the cooler.

Instead of the plurality of cooling water injection nozzles, a cooling tank containing cooling water may be disposed below the extruder 50, and a cylindrical cutter 54 rotatable in the cooling water tank may be disposed.

In order to use it as a raw material for steelmaking, it is preferable that the particle size of the waste plastic 9j of the granular body is 8 mm or less. In order to assemble the waste plastic granular body 9j having a particle size of 8 mm, the diameter of the circular hole 53 of the die 52 is set to 8 mm, and the rotation speed of the cylindrical cutter 54 and the waste from the die 52 are closed. The relationship with the extrusion speed of the plastic 9 is adjusted so that the rod-shaped body of the waste plastic extruded from the die 52 is cut to 8 mm. In this way, granulated particles 9j of waste plastic having a particle size of 8 mm are assembled.

48 is a perspective view of the assembling apparatus showing the tenth embodiment of the present invention, FIG. 49 is a plan view of the assembling machine shown in FIG. 48, FIG. 50 is a perspective view of the assembling machine shown in FIG. 49, FIG. FIG. 52 is a cross-sectional view taken along line BB shown in FIG. 49.

The assembly apparatus of the present invention shown in FIGS. 48 to 52 is disposed under the heating device 10, the pair of squeezing rollers 40 and the pair of squeezing rollers 40 disposed below the heating device 10. Assembled granulator 33.

Waste plastics selected from the waste are heated and melted at about 350 ° C. using the heating device 10 to pyrolyze the chlorine-containing plastic contained in the waste plastic. Hydrogen chloride gas generated by heat melting the waste plastic is recovered in hydrochloric acid. This removes the chlorine contained in the waste plastic.

The pair of squeegee rollers 40 are installed facing each other at a predetermined interval in the horizontal direction. The pair of squeegee rollers 40 rotate in opposite directions to each other. The waste plastic 9 heated and melted by the heating device 10 is stretched into a plate shape by a pair of squeegee rollers 40. The surface temperature of the plate-shaped waste plastic 9k is in the range of 30 to 120 ° C., and the waste plastic when the surface temperature is the above-mentioned temperature is slightly softer than the solidified waste plastic. Cooling water is circulated inside the pair of squeegeeing rollers 40, and the waste plastic 9 is elongated in a plate shape and cooled to the surface temperature described above. The waste plastic 9k stretched in the shape of a plate may be sprayed with cooling water or air from an injection nozzle not shown in the drawing to cool the waste plastic 9k in the form of a plate.

A granulator 33 is provided below the pair of squeezing rollers 40, and the granulator 33 has a plurality of disk-like rotating blades 34 of the same radius. The plurality of rotary blades 34 each has a plurality of sharp teeth 34a on its outer circumferential surface. The plurality of rotary blades 34 is the same horizontal axis as the shaft shaft 38 of the first group A and the first group A of the plurality of rotary blades 34 disposed on the horizontal shaft shaft 38 ( 38) a second group B of a plurality of rotating blades 34 arranged above. The plurality of rotary blades 34 of the first group A and the plurality of rotary blades 34 of the second group B rotate in opposite directions as indicated by arrows in FIG. 50. The plurality of rotary blades 34 of the first group A and the plurality of rotary blades 34 of the second group B are each disposed at substantially the same interval as the thickness t of the rotary blade 34. A portion of each of the plurality of rotary blades 34 of the first group A is inserted into each of the above gaps of the plurality of rotary blades 34 of the second group B. The granulator 33 is installed in the casing 39.

The granulator 33 has a plurality of fixed blades 35, and each of the plurality of fixed blades 35 is disposed on each of the plurality of rotating blades 34. The plurality of stationary blades 35 has a curved surface 35a of substantially the same radius as the outer circumferential surface of the plurality of rotating blades 34. Each curved surface 35a of the plurality of stationary blades 35 coincides with an outer circumferential surface of each of the plurality of rotating blades 34.

The waste plastic 9k stretched in a plate shape by the pair of squeegee rollers 40 includes a plurality of rotary blades 34 of the first group A and a plurality of rotary blades 34 of the second group B of the granulator 33. Falls in between. The plurality of plate-shaped waste plastics 9k that have fallen down are plural shown in Figs. 49 and 51 by the plurality of sharp teeth 34a of the plurality of rotary blades 34 and the curved surfaces 35a of the plurality of stationary blades 35. The dimension t of the thickness t of the rotary blade 34 and the pitch p of the rotary blade 34 by the plurality of cutting portions 36 shown in FIG. 49 by the cut portions 37 and the plurality of rotary blades 34 at locations. It is cut into granules 9l of waste plastic having a.

The thickness t of the rotary blade 34 and the fixed blade 35 is set to 6 mm, and the diameter of the rotary blade 34 is set to 200 mm. Therefore, the particle size of the granular material 9l to be cut is 6 mm. However, the particle size of the granular body 9l is not limited to the above dimension because it can be changed according to the use.

Since no residue is generated even when the waste plastic is assembled by the assembly apparatus in the waste plastic recycling treatment apparatus of the present invention, no residue treatment apparatus is required in the apparatus of the present invention and there is no problem of embedding the residue. Therefore, the facility can be configured on a smaller scale than waste plastic emulsification facility, which is economically advantageous.

As described above, according to the present invention, waste plastics that have been conventionally selected from wastes that are often landfilled or incinerated can be assembled by a small process, and effective use of waste plastics can be achieved. Since it can be widely used as a raw material for steelmaking to be used, or as a fuel of a cement kiln, it can bring industrially useful effects.

Claims (3)

(A) sorting waste plastics from waste, (B) heating and melting the sorted waste plastic to remove chlorine contained in the waste plastic; (C) A method for assembling waste plastics in a waste plastic recycling facility, characterized in that the waste plastics from which chlorine has been removed are cooled by cooling water, and then the cooled waste plastics are assembled by crushing. . (A) sorting waste plastics from waste, (B) heating and melting the sorted waste plastic to remove chlorine contained in the waste plastic; (C) A method for assembling waste plastics in a waste plastic recycling facility, characterized in that waste plastics from which chlorine has been removed are cooled and molded by rollers, and then cooled and molded waste plastics are assembled by shredding. . The method for assembling waste plastic according to claim 14 or 15, wherein the assembled waste plastic is used in a blast furnace as a raw material for steelmaking.