KR101557022B1 - Apparatus for recovering of waste vinyls or waste plastics - Google Patents

Abstract

The present invention relates to an apparatus for recovering waste vinyl or waste plastic, which comprises: a first reactor for firstly pyrolyzing the waste vinyl or the waste plastic; and a plurality of second reactors for secondly pyrolyzing a produced intermediate which is not pyrolyzed in the first reactor. The first reactor and the second reactors all have cylindrical shapes vertically installed. A rotary shaft for mixing vertically arranged along the center of the reactor is installed in the first reactor and the second reactors. The rotary shaft for mixing has a plurality of rotating wings for mixing. At least one among the second reactors is a 2-1 reactor where the intermediate is directly inserted in the first reactor. Side walls of the rest second reactors except for a 2-1 inserting reactor among the second reactors are connected to a side wall of the 2-1 reactor, and a communicating groove is formed between the connected side walls, as a 2-2 reactor. A part of the intermediate inserted into the 2-1 reactor from the first reactor is inserted into the 2-2 reactor via the communicating groove.

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention [0001] The present invention relates to a waste plastic recycling apparatus,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for recovering waste vinyl or waste plastics, and more particularly to a device for recovering waste vinyl or waste plastics by thermal decomposition.

Waste plastic or waste plastic is a compound made from petroleum as a raw material and has low recyclability and is mostly disposed of as waste. These wastes are decomposed in the natural state, and it takes a considerable time to pollute the soil and cause serious environmental pollution. Currently, various emulsification methods and devices have been studied and are being developed steadily as a method for recycling waste vinyl or waste plastics.

As a conventional technique for recovering waste vinyl, Korean Patent Registration No. 10-0515744 entitled " Pyrolysis Emulsification Apparatus for Used Vinyl and Waste Plastics ", Korean Patent No. 10-0288731 "Gasoline and Diesel Using Waste Vinyl and Waste Plastic A method for manufacturing a fuel oil and its apparatus ", Korean Patent No. 10-0829212" A waste vinyl recovery apparatus ", and the like are known.

As described in the above-mentioned prior art literature, when waste vinyl is liquidized by pyrolysis and then cracked, it can be converted into gasoline, diesel oil, gas, etc. constituted of liquid and gas.

However, the above-mentioned prior arts are not only a proposal but also various apparatuses for recovering waste vinyl have not been commercialized in Korea due to various problems.

On the other hand, in the case of Korean Patent No. 10-0829212 entitled "waste vinyl recovery device ", a plurality of second reactors are disposed in correspondence with one of the first reactors, the first reactor is continuously operated, And the intermediates generated in the first reaction furnace were sequentially supplied to the plurality of second reaction furnaces.

Such a device structure requires a pipe connecting both the first reaction path and the plurality of second reaction paths and requires separate devices for sequential supply, but due to the high temperature high viscosity intermediates, There was a difficulty in supplying.

Korean Patent No. 10-0515744 entitled " Pyrolysis Emulsification Apparatus for Waste Vinyl and Waste Plastics " Korean Patent No. 10-0288731 "Method for manufacturing gasoline and diesel oil using waste plastic and waste plastic and apparatus thereof" Korean Patent No. 10-0829212 "Waste Vinyl Recovery Device"

SUMMARY OF THE INVENTION The present invention has been conceived to solve the above-mentioned problems of the prior art, and it is an object of the present invention to provide a recovery device comprising a first reaction furnace and a plurality of second reaction furnaces, 2 to the second reaction furnace, and then a part of the intermediate product in the second-1 reaction furnace is naturally injected into the second-2 reaction furnace by the height difference, so that a plurality of And it is an object of the present invention to achieve a process efficiency by securing a very wide pyrolysis area due to a plurality of second reaction furnaces while very easily transferring the intermediate to the second reaction furnace.

According to an aspect of the present invention, there is provided a process for producing a thermally decomposed product, comprising: a first reaction furnace for first pyrolyzing waste vinyl or waste plastics; and a plurality of second reactions for thermally decomposing the intermediate produced without pyrolysis in the first reaction furnace Wherein the first reactor and the second reactor are both vertically installed cylinders, and the first reactor and the second reactor are connected to the center of the reactor Wherein at least one of the plurality of second reactors is provided with a rotary shaft for agitating arranged vertically along the first reaction furnace, wherein the rotary shaft for agitation is provided with a plurality of rotary blades for stirring, And the sidewall of the second reactor is connected to the sidewall of the second-1 reaction furnace, so that the sidewall of the second reactor is connected to the sidewall of the second- Concatenated A part of the intermediate material charged into the second-1 reaction furnace in the first reaction furnace is introduced into the second-2 reaction furnace through the communication hole, .

As described above, according to the present invention, in the recovering device composed of one first reaction furnace and a plurality of second reaction furnaces, the intermediate produced in the first reaction furnace is first introduced into the second-1 reaction furnace So that part of the intermediate product in the second-1 reaction furnace is naturally injected into the second-2 reaction furnace due to the height difference, so that the transfer of the intermediate product from the first reaction furnace to the plurality of second reaction furnaces can be very easily solved The present invention provides a waste vinyl or waste plastic recovering apparatus capable of securing an extremely wide pyrolysis area due to a plurality of second reactors and achieving process efficiency.

1 is a conceptual view showing a planar relationship between a first reactor and a second reactor as a first embodiment of the present invention,
FIG. 2 is a side view showing the relationship between the first reactor and the second reactor in FIG. 1,
FIG. 3 is a side view of the rotary shaft related elements for stirring in the first reactor and the second reactor in FIG. 1;
FIG. 4 is a side view showing the structure of the carbonization residue discharging device in FIG. 1,
5 is a conceptual view showing a planar relationship between a first reactor and a second reactor as a second embodiment according to the present invention.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings, which will be readily apparent to those skilled in the art. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In order to clearly illustrate the present invention in the drawings, portions not related to the description are omitted, and like reference numerals are given to similar portions throughout the specification.

Throughout the specification, when an element is referred to as "comprising ", it means that it can include other elements as well, without excluding other elements unless specifically stated otherwise.

Hereinafter, a first embodiment of the present invention will be described.

FIG. 1 is a conceptual diagram showing a planar relationship between a first reactor and a second reactor as a first embodiment of the present invention. FIG. 2 is a graph showing the relationship between the first reactor and the second reactor in FIG. FIG. 3 is a side view of the rotary shaft related elements for stirring the first reactor and the second reactor in FIG. 1, and FIG. 4 is a side view showing the structure of the apparatus for discharging carbonized residue in FIG.

In the pretreatment step, the waste vinyl cut off is first introduced into the first reactor 100 through the feedstock introducing conveyor 101. Thereafter, the gaseous recovered product generated by pyrolysis of the waste vinyl in the first reaction furnace 100 is sent to a cooler (not shown). In the first reaction furnace 100, an intermediate product which is not pyrolyzed by the recovered gaseous product And the solid phase) are sent to the second reaction furnace 200.

In the second reaction furnace 200, the supplied intermediate product is pyrolyzed again to be completely decomposed, and then the gaseous recovered product is sent to a cooler (not shown).

Thus, the first reactor 100 pyrolyzes the waste vinyl, and the intermediate produced without pyrolysis in the first reactor 100 is secondarily pyrolyzed in the second reactor 200.

The gaseous recoveries are cooled in a cooler (not shown) and then partially liquefied and then stored in a gas storage tank (not shown) or a gas storage tank (not shown).

Of course, various treatment facilities may be added to treat the gaseous effluents to be suitable for use.

A specific point in such a waste vinyl recovery process is that a plurality of the second reaction furnaces 200 are disposed corresponding to one of the first reaction furnace 100.

The first reactor 100 and the second reactor 200 are all cylindrically arranged vertically.

Since the second reaction furnace 200 is slightly smaller in size than the first reactor 100 but most of the structural parts are similar to each other, the components provided in the first reactor 100 are not limited to the second reactor 200 ), And description of the second reaction furnace 200 is omitted.

The bottom surface 110 of the first reactor 100 is divided into a concave heating part 111 and an edge 112 (see FIG. 3).

The concave heating portion 111 is formed at a central portion of the bottom surface 110 to guide the carbonized residue generated in the reaction furnace 100 to the bottom edge 112 of the reactor 100, , That is, when the first reactor 100 is heated by a burner (not shown), the heat loss can be reduced.

As described above, the heat loss can be reduced as much as possible by heating the reaction furnace 100 by the concave heating portion 111, and carbonized residues or the like which are separated from the bottom of the reaction furnace 100 are gathered toward the outer wall, The carbonization residue is discharged to the outside by the water discharge device 120, thereby enabling the continuous operation of the reaction furnace 100.

If the bottom of the reaction furnace 100 is flat, heat loss during heating may occur and the pyrolysis may not be performed properly, and the carbonized residue powder and the raw materials accumulated on the bottom are solidified, 2 should stop the operation of the equipment and remove the carbonized residue accumulated on the bottom of the reactor 100.

Also, a carbonization residue discharging device 120 is provided on the bottom edge 112 of the reaction furnace 100.

The carbonized residue discharging device 120 includes a discharge path 121 formed downward from the bottom edge 112 of the reaction furnace 100 and a discharge path 121 formed in the discharge path 121 for opening and closing the discharge path 121 And a pair of on-off valves 122 disposed apart from each other (see FIG. 4).

When the upper opening / closing valve 122 is opened in a state where the lower opening / closing valve 122 is closed, the carbonization residue escapes into the space between the pair of the opening / closing valves 122, When the open / close valve 122 is opened in the closed state of the open / close valve 122, carbonized residues staying between the pair of open / close valves 122 may be discharged to the outside.

The structure of the carbonization residue discharging device 120 can maintain the vacuum inside the reaction furnace and can minimize the heat loss in spite of the discharge of carbonization residues, and it is possible to maximize the productivity improvement by enabling continuous operation .

Therefore, the carbonized residue can be stably discharged even during decomposition of waste vinyl or the like in the reaction furnace 100.

At the center of the first reactor 100, there is provided a stirring shaft 131 for stirring, which is arranged vertically along the center of the reactor (see FIG. 3). A shaft support for supporting the stirring shaft 131 can be easily understood without any particular explanation.

The agitating rotary shaft 131 is connected to a driving source 132 such as a motor provided outside the reaction furnace 100 and is rotatably disposed along an internal vertical center of the reaction furnace 100.

A plurality of stirring blades 134 for stirring and a rotating blade 133 for concentrating carbonization residues are fixed to the stirring shaft 131.

The rotating blades 134 for stirring and the rotating blades 133 for concentrating carbonization residues are rotated in the first reactor 100 together with the rotation of the stirring shaft 131. [

The raw material (waste vinyl or the intermediate product) is sufficiently agitated by being rotated from the top to the bottom by the stirring blades 134.

The carbonized residue concentrating rotary vane 134 is provided at the lower end of the stirring rotary shaft 131 with a shape corresponding to the concave heating portion 111 and the bottom edge 112 of the reaction furnace 100.

The carbonized residue concentrating rotary blade 134 has a shape corresponding to the recessed heating portion 111 so that the carbonized residue can be concentrated on the bottom edge 112 and corresponds to the bottom edge 112 Is intended to move the carbonized residue collected in the edge 112 to the discharge passage 121. [

(Cylindrical, concave heating portion 111 and edge 112), the carbonization residue discharging device 120, the stirring rotary shaft 131, and the like are used as components of the first reaction furnace 100, The driving source 132, the rotating blades 134 for stirring, the rotating blades 133 for concentrating carbonization residues, and the like are directly applied to the second reactor 200 as well.

The intermediate produced in the first reactor 100 is sent to the second reactor 200 by the intermediate transfer device 140.

One of the three second reaction furnaces 200 is a second-1 reaction furnace 210 in which the intermediate produced in the first reaction furnace 100 is directly introduced.

The other two of the three second reaction furnaces 200 are the second-2 reaction furnace 220 in which a part of the intermediate charged into the second-1 reaction furnace 210 is introduced by the height difference.

That is, in the second-2 reaction furnace 220, the intermediate product is not directly introduced into the first reaction furnace 100.

The second-1 reaction furnace 210 and the second-2 reaction furnace 220 are both cylindrical.

However, the second-1 reaction furnace 210 and the second-2 reaction furnace 220 have their side walls connected to each other, and the communication holes 211 are formed between the adjacent side walls.

Therefore, the three second reactors 200 of the present embodiment have a structure in which two communicating openings 211 are formed and connected to each other in a dumbbell shape.

Accordingly, when the accumulated height of the intermediate product injected into the second-1 reaction furnace 210 increases, the two intermediate second reaction-product passages 220, which are naturally located on both sides of the intermediate product, .

The intermediate transfer device 140 has a screw conveyor shape and connects the lower part of the first reaction furnace 100 and the upper part of the second-1 reaction furnace 210.

In this embodiment, when the intermediate is transferred from one first reactor 100 to a plurality of second reactors 200, the intermediate is transferred only to only one second-1 reactor 210, Thus, the connection structure between the first reactor 100 and the second reactor 200 is greatly simplified, thereby solving the problem caused by the transfer of the intermediate to the plurality of second reactors 200.

Also, in this embodiment, in order to stir the intermediate product by the rotary blades 134 in the second reaction furnace 200, the second reaction furnace 200 must be designed as a cylindrical shape, 134, the cylindrical shape must have a small diameter. Nevertheless, in order to ensure a high pyrolysis area of the second reaction furnace 200, the contradiction that the cylindrical shape should have a large diameter is referred to as a second reaction furnace 200 is connected to the second reactor 200 through the communication hole 211 after securing a sufficient secondary thermal decomposition area so that the second reactor 200 is connected to the second reactor 200 through the communication hole 211. [ The structure in which the intermediate product falls naturally by the height difference by the first reaction path 210 and the second 2 reaction path 220 is taken to solve the problem caused by the intermediate transfer.

Hereinafter, a second embodiment of the present invention will be described.

In the case of this embodiment, two second-1 reaction paths 210 are connected to one first reaction path 100, and an intermediate transfer device 140 is connected to each second-1 reaction path 210 Is prepared.

In the second-1 reaction path 210, the second-2 reaction path 220 in which the side walls are connected is connected.

Thus, it can be seen that the second embodiment can have all four second reactors 200.

It will be understood by those skilled in the art that the foregoing description of the present invention is for illustrative purposes only and that those of ordinary skill in the art can readily understand that various changes and modifications may be made without departing from the spirit or essential characteristics of the present invention. will be. It is therefore to be understood that the embodiments described above are intended to be illustrative, but not limiting, in all respects. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents are to be construed as being included within the scope of the present invention do.

100: first reaction furnace 101: feed conveyor
110: bottom surface 111: concave heating part
112: edge
120: carbonization residue discharging device 121: discharging furnace
122: opening / closing valve
131: rotation shaft for stirring 132: driving source
133: Rotation blades for concentrating carbonized residue 134: Rotating blades for stirring
140: intermediate transfer device
200: second reaction furnace
210: 2-1 reaction furnace 211:
220: Reactor 2-2

Claims (1)

A first reaction furnace for firstly pyrolyzing waste vinyl or waste plastics and a plurality of second reaction furnaces for pyrolyzing secondarily the intermediate produced without pyrolysis in the first reaction furnace, An apparatus comprising:
Wherein the first reaction furnace and the second reaction furnace are all cylindrically provided vertically,
The first reaction furnace and the second reaction furnace are provided with an agitating rotary shaft disposed vertically along the center of the reaction furnace,
Wherein a plurality of stirring blades for stirring are provided on the stirring shaft,
At least one of the plurality of second reactors is a second-1 reaction furnace in which an intermediate is directly introduced into the first reactor,
The second reaction path excluding the second-1 addition reaction path among the plurality of second reaction paths has a sidewall connected to a sidewall of the second-1 reaction path, and a communication port is formed between the sidewalls of the second reaction path, In the second-2 reaction furnace,
A part of the intermediate material charged into the second-1 reaction furnace in the first reactor is charged into the second-2 reaction furnace through the communication hole
And a waste plastic recovering device.

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