JP3611520B2 - Wax-like substance manufacturing equipment - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an apparatus for producing a wax-like substance from a synthetic resin such as waste plastic which becomes industrial waste by thermal decomposition.
[0002]
[Prior art]
Since most of the synthetic resin of industrial waste is heated and melted, when it is reused, it has been pelletized again from pulverization to extrusion. However, since a cross-linked product such as cross-linked polyethylene is not heated and melted, it cannot be formed into pellets, and when reused, a wax-like substance is used.
[0003]
As disclosed in Japanese Patent Laid-Open No. 5-84742, the method for producing the wax-like substance includes, as a raw material, flammable highly crosslinked polyethylene, non-crosslinked, low-crosslinked and highly-crosslinked polyethylene for producing a waxy substance, etc. Are mixed and used. Then, the raw material is dropped onto the rooster from the inlet of the apparatus, and the combustible highly cross-linked polyethylene is ignited and burned to melt the synthetic resin for the wax-like substance, and the melt is dripped into the tank from the hole of the rooster. . Oxygen in the tank is quickly consumed to be in an oxygen deficient state, and the melt is thermally decomposed in an oxygen deficient state to become a waxy substance and accumulates in the tank. The wax-like substance that has been melted to a high temperature partially vaporizes in an oxygen deficient state to generate a flammable hot gas, and this gas is mixed with air and burned, so that the melting of the raw material is sustained. Is done. Therefore, it is necessary to supply heat energy at the time of start-up, but after that, heat energy is naturally supplied.
[0004]
However, the above-described conventional wax-like substance manufacturing apparatus always has a constant position of the raw material falling on the rooster, so that the raw material is biased to a part of the rooster, the thermal decomposition efficiency of the raw material is reduced, and the waxy This resulted in a decrease in the quality of the material.
[0005]
[Problems to be solved by the invention]
The invention described in claim 1 has been developed in consideration of the above circumstances, and an object of the invention is to provide a wax-like substance manufacturing apparatus capable of evenly dispersing raw materials on the rooster.
[0006]
Further, an object of the invention described in claim 2 is to make it possible to sufficiently exhibit the function of the structure when the structure achieving the object of the invention described in claim 1 is achieved.
[0007]
[Means for Solving the Problems]
The present invention introduces a raw material from an inlet of an exhaust gas combustion chamber, drops the raw material into a combustion cylinder which is a cylinder of a bottomed cylindrical furnace main body, and heats the raw material on a rooster at the bottom of the furnace main body. In the wax-like substance manufacturing apparatus that decomposes and melts and drops the wax-like substance dropped from the rooster in the tank, the furnace body is an integral part of the rooster and the combustion cylinder, and supports the upper part of the combustion cylinder rotatably. It is characterized by that.
[0008]
The reason that the “furnace main body is an integrated body of the rooster and the combustion cylinder” is to make the rooster rotate when the combustion cylinder is rotated. Therefore, the combustion cylinder and the rooster are not integrated, and the thing that does not rotate even if the combustion cylinder is rotated is not included. In addition, as an example of what was integrated, the thing which made the combustion cylinder and the rooster impossible to separate by welding, and the thing which put the rooster on the lower part of the combustion cylinder and made it separable are mentioned.
[0009]
In order to promote the purification of exhaust gas, it is desirable to create an atmosphere that facilitates complete combustion by introducing air into the exhaust gas combustion chamber.
[0010]
In addition, the rooster is a portion where the temperature is highest because it is subjected to thermal decomposition. On the other hand, the upper portion of the combustion cylinder is farther from the rooster, and is therefore cooler than the rooster. However, since the heat is transmitted from the rooster in the portion that rotatably supports the combustion cylinder, the temperature becomes somewhat high when used for a long time. Therefore, in order to suppress the distortion due to temperature rise as much as possible and to fully exhibit the function of supporting the support in a rotatable manner, it is only necessary to have a structure that cools the support part. For example, the outside air is not surrounded by the entire outside of the support part. It is sufficient to provide a structure that touches the surface, or an air suction port may be provided in a part of the support portion even if it surrounds the periphery of the support portion.
[0011]
Therefore, in order to achieve the promotion of exhaust gas cleaning and prevention of temperature rise at a time, the upper part of the combustion cylinder is accommodated in the exhaust gas combustion chamber, and the combustion cylinder is contained in the exhaust gas combustion chamber. It is desirable to provide an air inlet around the supporting portion.
[0012]
DETAILED DESCRIPTION OF THE INVENTION
As shown in FIG. 1, the apparatus for producing a wax-like substance of the present invention is formed by separating the exhaust gas combustion chamber 2 and the air introduction chamber 3 from each other with the first partition plate 1 supported by the frame F as a boundary. A tank T is provided below the introduction chamber 3 via the second partition plate 4, and the furnace body 6 is inserted into the exhaust gas combustion chamber 2 and the air introduction chamber 3 in the hole 5 of the first partition plate 1. The upper portion of the combustion cylinder 7 of the furnace body 6 is rotatably supported on the first partition plate 1 via a bearing 8, and the lower periphery of the combustion cylinder 7 is surrounded by a plurality of rollers 9 for positioning and combustion. A drive mechanism 10 for rotating the furnace body 6 is connected to the upper portion of the cylinder 7.
[0013]
In order to prevent air from entering and leaving between the exhaust gas combustion chamber 2 and the air introduction chamber 3, a seal is made with a heat resistant material between the hole 5 of the first partition plate 1 and the combustion cylinder 7. Use flexible materials such as glass wool as the heat-resistant material so as not to prevent rotation.
[0014]
In addition, a charging port 11 is provided on the side surface of the exhaust gas combustion chamber 2 so as to be openable and closable, and a raw material supply table 13 is provided on a passage 12 leading to the charging port 11 so as to be able to enter and exit from the charging port 11 to directly above the furnace body 6. The 2nd partition plate 4 arrange | positioned under the rooster 14 which is the bottom of the furnace main body 6 is formed in a funnel shape, and a melt and gas pass from the piercing hole 15 of the 2nd partition plate 4. FIG. Although not shown, it is desirable that a bucket for pulling up the raw material on the supply table 13 is provided so as to be movable up and down.
[0015]
In addition, an air intake 16 is opened around the lower part of the combustion cylinder 7, and a portion away from the lower part of the combustion cylinder 7 is surrounded by a cover wall 17 rising from the second partition plate 4. The opening 18 is open. Accordingly, the exhaust gas is forcibly drawn from the duct 19 side to make the inside of the furnace body 6 have a negative pressure, so that air passes from the inlet 18 through the clearance between the cover wall 17 and the combustion cylinder 7 and from the intake 16. It is taken into the furnace body 6. Here, it is desirable to take a wide opening area of the intake port 16 so that the air does not flow from the gap below the rooster 14. Specifically, each intake port 16 has an elliptical shape, and is provided so as to surround the entire periphery of the combustion tube 7 by the intake port 16 when the combustion tube 7 is viewed in plan.
[0016]
On the other hand, the gas in which the wax-like substance accumulated in the tank T is vaporized rises from the hole 15 of the second partition plate 4 and the hole 20 of the rooster 14, and the air and gas are mixed and burned in the vicinity immediately above the rooster 14. The exhaust gas is primarily combusted in the exhaust gas combustion chamber 2 and then guided to the duct 19 to perform secondary combustion in another chamber to remove dust, unburned gas, etc. in the shower room (not shown) and then release to the atmosphere. Is done. In addition, if the opening area 18 opened to the lower part of the air introduction chamber 3 is provided so that adjustment of an opening area is possible with a lid | cover, for example, the amount of air can be adjusted according to the internal condition of the furnace main body 6. FIG.
[0017]
The lower part of the combustion cylinder 7 has an inner casing 21 on which the edge of the rooster 14 is placed. A hoisting machine 22 for raising and lowering the rooster 14 is fixed on the exhaust gas combustion chamber 2 and a hook 23 of the hoisting machine 22 is passed through. A through hole 24 is provided in the exhaust gas combustion chamber 2 so as to be opened and closed, and a window 26 through which the drawer table 25 on which the rooster 14 is placed is opened and closed is provided on the side surface of the exhaust gas combustion chamber 2 so that the extraction table 25 reaches above the furnace body 6. It can be reciprocated up to. Therefore, when replacing the rooster 14, the rooster 14 may be moved up and down to the position directly above the furnace body 6 on the drawing table 25, and the rooster 14 may be moved up and down by the hoisting machine 22.
[0018]
A drive mechanism 10 for rotating the furnace body 6 is a general drive mechanism. As shown in FIGS. 1 and 2, a flange 27 placed on the bearing 8 at the upper part of the combustion cylinder 7 is formed in a sprocket shape or a pulley. It is formed as a shape, and a chain or a belt is passed around and rotated by a motor.
[0019]
A bearing 8 that is a supporting portion of the combustion cylinder 7 and the drive mechanism 10 are accommodated in the exhaust gas combustion chamber 2, and an air suction port 28 is opened around the bearing 8 and the drive mechanism 10.
[0020]
In the present invention described above, since the intake 16 is provided at a height corresponding to the outside of the raw material placed on the rooster 14, the mixing position of air and gas becomes the height of the raw material, and the thermal energy by combustion is efficiently obtained. It is transmitted to the raw material and promotes thermal decomposition.
[0021]
【The invention's effect】
In the first aspect of the invention, since the rooster rotates with the combustion cylinder, the raw material falling from the inlet is evenly scattered on the rooster, improving the thermal decomposition efficiency of the raw material and improving the quality of the wax-like substance. Is brought about. In addition, since the location where the combustion cylinder is rotatably supported is away from the highest temperature rooster, the heat resistance temperature of the support portion can be lower than the structure where the rooster is rotatably supported. Parts can be used.
[0022]
The invention according to claim 2 uses the air effectively because the air that has entered from the air suction port is used for complete combustion of the exhaust gas after fulfilling the function of cooling the support portion. As a result, it is possible to achieve at once the prevention of the temperature rise of the support portion that performs the function of supporting it rotatably, and the promotion of exhaust gas cleaning.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing an apparatus for producing a wax-like substance of the present invention.
FIG. 2 is a plan view showing an arrangement of a driving mechanism of the furnace body and an air suction port.
[Explanation of symbols]
2 Exhaust gas combustion chamber 6 Furnace body 7 Combustion cylinder 11 Input port 14 Rooster 28 Air intake port T Tank

Claims (2)

The raw material is introduced from the inlet (11) of the exhaust gas combustion chamber (2), and the raw material is dropped into the combustion cylinder (7) which is a cylinder of the bottomed cylindrical furnace main body (6). In the apparatus for producing a waxy substance, the raw material is thermally decomposed and melted on the rooster (14) which is the bottom of), and the waxy substance dripped from the rooster (14) is stored in the tank (T).
The furnace body (6) is an integrated unit of a rooster (14) and a combustion cylinder (7), and supports the upper part of the combustion cylinder (7) so as to be rotatable. The upper part of the combustion cylinder (7) is accommodated in the exhaust gas combustion chamber (2), and the exhaust gas combustion chamber (2) is provided with an air inlet (28) around the support portion of the combustion cylinder (7). The wax-like substance manufacturing apparatus according to claim 1, wherein

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