KR20110089924A - Continuous functions are equipped with waste tire pyrolysis device and method of it's - Google Patents

Abstract

PURPOSE: A continuous heat-decomposition apparatus for waste tires, and a method of heat-decomposing the waste tires are provided to use a safe indirect heating method. CONSTITUTION: A continuous heat-decomposition apparatus(20) for waste tires includes an electric heating coil(40), a secondary heating coil, a rotary shaft(70), a discharging unit(9`) and tire pieces. The electric heating coil heats the inserted tire pieces(1) for heat-decomposing. The secondary heating coil heats the inside of the heat-decomposition apparatus. The rotary shaft includes plural supplying wings for transporting the tire pieces. The discharging unit discharges heat-decomposed solid residues.

Description

Continual functions are equipped with Waste Tire Pyrolysis device and Method of it's}

The present invention relates to an apparatus and a method for pyrolyzing waste tires generated from automobiles by indirect heating. More specifically, the waste tires are cut into a plurality of tire pieces and injected into a pyrolysis apparatus in which an electrothermal heating coil is embedded. The present invention relates to a continuous waste tire pyrolysis apparatus having a uniform heat transfer function for effectively discharging solid residues while improving the reuse efficiency of oils and gases generated during pyrolysis.

In general, as shown in FIG. 1, a pyrolysis apparatus of waste tires cuts waste tires into tire pieces 1 and supplies them to the supply chamber 5 through the hopper 2, thereby preventing explosion during pyrolysis. In order to prevent the primary and secondary opening and closing sides (3, 4) to put the inflow of air is blocked.

The introduced tire pieces 1 are transferred to the flight 6 and are thermally decomposed by heat generated in the rotary furnace 8 in the supply cylinder 7 and discharged to the discharge unit 9.

However, the supply cylinder of the above-described waste tire pyrolysis device is formed in a horizontal shape, and due to the high heat (450 to 750 ° C.), the bending deformation of the flight 6 is caused, also known as 'steel ball', which occurs during the pyrolysis process. The solid residue 11, called, was sandwiched between the inner wall of the feed cylinder 7 and the flight 6, causing a risk of frequent failures and explosions due to high temperatures.

Meanwhile, in order to solve these problems, as shown in FIG. 2, a pyrolysis apparatus having a pyrolysis zone 10 therein is constructed, and the solid residue 11 discharged is a vibration means 13 and a conveyor means 12. The vertical pyrolysis device for discharging to the outside through the) is disclosed in Korean Patent Publication No. 0171226.

However, the pyrolysis apparatus disclosed in Korean Patent Laid-Open Publication No. 0171226 is divided into a pyrolysis zone, a reduction zone, and a combustion zone, which is not only complicated in construction, but also does not have constant heat applied to the introduced tire pieces 1, resulting in thermal decomposition efficiency. This has a problem of deterioration.

The present invention has been made to solve the above problems, and adopts an indirect heating method, which is not only safe, but also simple in structure and low in production cost and minimizes the failure rate. To provide.

Accordingly, the present invention prevents explosion accidents generated during pyrolysis and provides a 'continuous waste tire pyrolysis apparatus and method having a uniform heat transfer function', which is easy to operate and maintain, thereby reducing carbon dioxide generation. At the same time, the main purpose is to obtain useful resources and energy.

To this end, the present invention is to divide the inside of the casing into a plurality of inflow plates (1st to 3rd) in order to decompose the tire fragments pyrolyzed by indirect heating method step by step, and pyrolysis by heating the incoming tire fragments An electrothermal heating coil is installed outside of the casing, and the auxiliary heating coil for uniform heating is separately mounted to the lower portions of the inflow plates, while the pieces of tires pyrolyzed are formed on the inflow plates. A rotary shaft moving to a sphere is placed at the center of the pyrolysis apparatus, and a plurality of supply blades for transferring tire pieces are attached to the upper, lower, and middle portions, respectively, and the discharge portion for discharging pyrolyzed solid residues is provided at the lower end of the casing. To be mounted.

In addition, the continuous waste tire pyrolysis method is equipped with a uniform heat transfer function, the inlet step of introducing the tire pieces into the pyrolysis device (first step), and the first contact with the feed wings attached to the upper end of the rotary shaft, The second inlet plate 30 'is transferred to the middle portion of the pyrolysis apparatus through the first outlet formed in the primary inlet plate (second step), and the second inlet plate 30' is in contact with the feed wings attached to the middle portion of the rotary shaft. The third inlet plate is transferred to the lower end of the pyrolysis device (third step) through the second outlet formed in the) and the tire pieces transferred to the lower end are in third contact with the supply blades attached to the lower end of the rotating shaft. And a step (fourth step) discharged downward through the third outlet formed in the.

Continuous waste tire pyrolysis apparatus and method having a uniform heat transfer function of the present invention made as described above is superior in thermal decomposition efficiency compared to the conventional horizontal pyrolysis apparatus, and the failure rate is reduced by minimizing the bending deformation of the rotating shaft to continuously thermal decomposition It has a possible effect.

In addition, the pyrolysis apparatus of the present invention employing an indirect heating method is equipped with a separate auxiliary heating coil together with a configuration in which thermal decomposition is performed in multiple stages (three stages), so that thermal decomposition at low temperatures is possible, thereby minimizing explosion risk. In addition, high decomposition efficiency can be expected.

In addition, the present invention employs an electrothermal heating coil using electricity as a heat source, and compared to the conventional heat source method using heat medium, the temperature in the pyrolysis apparatus can be greatly reduced in a short time by only shutting down the power supply in case of failure or emergency. Subsequently, it is also expected that the safety of maintenance in a safe state (room temperature) will be greatly improved.

1 is a perspective view of a typical horizontal waste tire pyrolysis device.
Figure 2 is a perspective view of a conventional vertical waste tire pyrolysis device.
Figure 3 is an overall cross-sectional view of the present invention pyrolysis device.
4A and 4B are a perspective view and a plan view of the primary to tertiary supply wings mounted on the rotating shaft of the present invention.
5a to 5c are a perspective view, a cross-sectional view and a plan view of the inflow plate of the present invention.
6a and 6b are perspective views of the discharge portion and the blocking plate of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. In the following description of the present invention, if it is determined that a detailed description of a related known function or configuration may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

Continuous waste tire pyrolysis apparatus having a uniform heat transfer function of the present invention, as shown in FIG. 3 in order to decompose the tire fragments (1) that are pyrolyzed in an indirect heating manner, as shown in FIG. The upper inlet plate 30, the secondary inlet plate 30 'and the tertiary inlet plate 30 "are respectively divided into upper and lower compartments (3 portions), and the incoming tire pieces 1 are heated to pyrolyze. An electrothermal heating coil 40 is installed outside the casing 21, but an auxiliary heating coil 43 for heating the inner portion of the pyrolysis apparatus 20 is illustrated in FIGS. 5A and 5B. Separately mounted under the inflow plate (30, 30 ', 30 ") to ensure uniform heating to the incoming tire pieces (1), while the pyrolysis of the tire pieces (1) to the inlet plate To each outlet 31, 31 ', 31 "formed in the 30, 30', 30" In the central portion of the pyrolysis apparatus 20 to be moved, as illustrated in FIG. 4A, a plurality of supply blades 71, 72, and 73 for transferring the tire pieces 1 are attached to the upper and lower portions (three steps). At the same time as installing the rotary shaft 70, the discharge portion (9 ') for discharging the pyrolyzed solid residue (11) is to be mounted on the lower end of the casing (21).

At this time, the inside of the pyrolysis device 20 to limit the inflow of external air to prevent explosion accidents during pyrolysis.

To this end, the temperature and pressure inside the pyrolysis apparatus are 250 to 350 ° C. and 560 to 600 mmhg, while the outlet 9 ′ also blocks air inflow from the outlet 54, FIGS. As shown in FIG. 6A and FIG. 6B, the first and second discharge grooves 51 and 51 'for discharging the pyrolyzed solid residue 11 and the first and second shutoff edges 53 and 53'. The first and second insertion grooves (52, 52 ') are fitted so that the blocking edges 53, 53' are sequentially operated.

In order to maintain the pressure of the pyrolysis device 20 is equipped with a vacuum pump (not shown) that is automatically operated in accordance with the internal pressure.

As shown in FIGS. 5A to 5C, the inlet plates 30, 30 ′ and 30 ″ have a bushing 32 that is in sliding contact with the rotating shaft 70 in the through hole 33. At the bottom of the inflow plates 30, 30 ′ and 30 ″, an auxiliary heating coil 43 for uniform heating of the tire piece 1 moving inside the heat exchanger 20 is provided, and at the same time, a heating coil A plurality of heating coil casing 41 in which the insertion part 42 is formed is installed (one to three).

At this time, the inlet plate (30, 30 ', 30 ") as shown in Figure 3, the tire piece (1) in the pyrolysis device 20 to the middle portion, the lower end and the outlet 9' The outlets 31, 31 ', and 31 "are formed to be formed, respectively, and the angle θ2 between both sides of the outlet is 60 to 65 degrees as shown in FIG. 5A. RPM should be 0.1 revolutions per minute.

When the angle formed by both sides of the inflow plate and the rotation speed of the rotation shaft 70 are smaller than the above range, the problem of the thermal decomposition efficiency is expected to decrease due to the accumulation of the tire pieces 1 that are introduced. There is a risk of explosion accident due to the maintenance of a high temperature (350 ℃ or more) for pyrolysis treatment of the tire pieces 1 introduced per unit time.

In addition, the pyrolysis time for discharging the tire pieces 1 introduced through the hopper 2 to the discharge port 54 is preferably 40 minutes to 60 minutes.

This is an advantage in that the throughput per unit time is increased when the pyrolysis time is shorter than the above range, but the degradation of the pyrolysis efficiency is concerned with the problem of maintaining the temperature inside the pyrolysis apparatus 20 at a high temperature (350 ° C. or more). On the contrary, in the case of longer than the above range, the pyrolysis efficiency increases, but the throughput per unit time decreases, so that the operating efficiency of the pyrolysis device is deteriorated.

Therefore, while heating the incoming tire piece 1 in stages (up and down three stages), the inside of the heat exchanger 20 is uniformly heated (outer: electrothermal heating coil, inside: auxiliary heating coil). By maintaining this, high thermal decomposition efficiency is possible at low temperatures (250 ° C. to 350 ° C.), and at the same time, there is an effect of preventing explosion accidents generated at high temperatures.

As shown in FIG. 3, the driving of the rotating shaft 70 includes a driving gear 76 receiving power from the driving motor 74 and the reduction gear 75, and a rotating shaft receiving power from the driving gear 76. It consists of a driven gear 77 for driving 70.

In addition, the angle formed by the supply wings 71, 72, 73 mounted on the upper, middle and lower portions of the rotary shaft 70, respectively, so as to be around 15 degrees as shown in FIGS. 4A and 4B.

This is a problem that it is difficult to uniformly heat the tire pieces 1 that are stacked (conical) when the angles at which the feed vanes 71, 72, 73 are mutually out of the above ranges.

The waste tire pyrolysis apparatus of the present invention, as shown in Figure 3, so that the inner shaft of the casing 21 made of steel so that the rotary shaft 70 for transporting the tire pieces (1) introduced through the hopper (2) is mounted On the upper part, a shaft casing 74 and a sealing cap 75 are installed to block foreign substances from being introduced from the outside.

In addition, the inner and outer sides of the casing 21 are equipped with a heat transfer coil 40 for supplying heat required for pyrolysis and a heat insulating material 22 for blocking heat leakage to the outside.

On the other hand, the discharge portion (9 ') for discharging the pyrolyzed solid residue (11), as shown in Figure 6a and 6b, has a fan shape and the upper portion is discharged by accumulating the incoming solid residue (11) A first and a second blocking plate fitted with the first and second insertion grooves 52, each having a first discharge groove 51 and a second discharge groove 52, to block the inflow of external air during discharge ( 53, 53 ').

In the pyrolysis operation for the waste tire, first, electricity is supplied to the electrothermal heating coil 40 and the auxiliary heating coil 43 to raise the temperature inside the pyrolysis apparatus 20 to an appropriate temperature (250 ° C to 350 ° C) range. In, the tire pieces 1 cut to a certain standard are introduced into the pyrolysis apparatus 20 through the hopper 2.

At this time, in order to prevent the inflow of air to operate the plurality of primary and secondary inlet opening and closing sides (23, 23 ') which are sequentially operated in the lower portion of the hopper (2).

The tire pieces 1 introduced through the hopper 2 are introduced into the upper end of the pyrolysis apparatus 20, as shown in FIGS. 3 and 4A, and the feed wings 71 attached to the upper end of the rotating shaft 70. , 72, 73, and are conveyed to the middle portion of the pyrolysis apparatus through the first outlet 31 formed in the primary inlet plate 30.

The tire pieces 1 conveyed to the middle portion of the pyrolysis apparatus are in secondary contact plate 30 'while in secondary contact with the feed wings 71', 72 ', 73' attached to the middle portion of the rotary shaft 70. ) Is transferred to the lower end of the pyrolysis apparatus through the second outlet 31 ′.

The tire pieces 1 transferred to the lower end are formed on the tertiary inlet plate 30 ″ while making third contact with the supply blades 71 ″, 72 ″, 73 ″ attached to the lower end of the rotation shaft 70. It is conveyed to the discharge part 9 'through the 3 outlet 31 ".

Therefore, as shown in Figure 4a, when the rotary shaft 70 in three stages (upper, middle and lower), and nine rotary blades are attached in stages, a total of 27 rotary blades (71 ~ 73, 71) '~ 73', 71 "` 73 ") are formed.

At this time, the diameter (d) of the rotating shaft 70 to which the rotary blades 71 to 73, 71 'to 73', and 71 " '73 " The amount is determined in consideration of the throughput, but preferably 0.1 times to 0.12 times the outer diameter D of the casing 21.

On the other hand, the gas generated in the pyrolysis process is supplied to the gas reservoir (not shown) through the gas outlet (60).

As described above, the continuous waste tire pyrolysis method having a uniform heat transfer function includes an inflow step (first step) in which the tire pieces 1 are introduced into the pyrolysis device 20 through the hopper 2 and the pyrolysis device. The first outlet port formed in the primary inlet plate 30, the tire pieces (1) introduced into the interior of the first contact with the feed wings (71, 72, 73) attached to the upper end of the rotating shaft 70 ( 31) (2nd step) to be transferred to the middle portion of the pyrolysis apparatus, and the tire pieces (1) transferred to the middle portion of the pyrolysis apparatus, the feed wings 71 ', 72 attached to the middle portion of the rotary shaft 70 73, the second step of being transferred to the lower end of the pyrolysis device through the second outlet (31 ') formed in the secondary inlet plate (30') (third step), and the lower end Tire fragments 1 are molded into the tertiary inlet plate 30 " while in tertiary contact with the feed vanes 71 ", 72 " and 73 " It is composed of a multi-stage downward manner (fourth step) discharged to the discharge portion 9 'through the third outlet (31 ") is formed.

Discharge of the solid residue 11 introduced into the gas discharge portion 9 ′ opens only the primary blocking side 53 to the upper portion of the first discharge groove 51 in order to block the inflow of external air during discharge. The accumulated solid residue 11 is transferred to the upper portion of the second discharge groove 52.

The external discharge of the solid residue 11 transferred to the upper portion of the second discharge groove 52 is the discharge port 54 with only the second blocking edge 53 'being opened while the primary blocking edge 53 is closed. It is discharged to outside through).

 Continuous waste tire pyrolysis device having a uniform heat transfer function of the present invention made as described above, the thermal pyrolysis efficiency is superior to the conventional horizontal pyrolysis device, and the failure rate is reduced by minimizing the bending deformation of the rotating shaft to achieve the effect of continuous thermal decomposition Have.

In addition, the pyrolysis apparatus and the method of the present invention employing the indirect heating method is a thermal decomposition at a low temperature by being equipped with a separate auxiliary heating coil with a configuration that is thermally decomposed by multiple stages (three stages), explosion risk In addition to minimizing this, high pyrolysis efficiency can be expected.

In addition, the present invention employs an electrothermal heating coil using electricity as a heat source, and compared to the conventional heat source method using heat medium, the temperature in the pyrolysis apparatus can be greatly reduced in a short time by only shutting down the power supply in case of failure or emergency. Therefore, it is also expected that rapid internal inspection and repair in a safe state (at room temperature) are easy.

In the above, the present invention has been described with reference to the above exemplary embodiments, but various modifications can be made within the technical scope of the present invention.

For example, in the present invention, the supply blades 71, 72, 73 of the rotary shaft 70 for transporting the tire piece 1 has three stages up and down, but is not limited thereto, and the rotation direction of the rotary shaft 70 is also limited. In addition to the forward and reverse rotation, the number of feed blades attached to the disassembly stage and the rotating shaft may be added or subtracted according to the material and capacity of the tire fragment being pyrolyzed.

1: tire piece 2: hopper
3: primary open and close 4: secondary open and close
11: solid residue 20: pyrolysis device
21: casing 22: insulation
23: 1st inlet opening and closing valve 24: 2nd inlet opening and closing valve 30, 30 ', 30 ": 1st to 3rd inlet plate
31, 31 ', 31 ": first to third outlet 32: bushing
33: through hole 40: electrothermal heating coil
41: heating coil casing 43: auxiliary heating coil 51, 51 ': first and second discharge groove 52, 52': first and second insertion groove
53, 53 ': 1st, 2nd blocking side 54: outlet 60: gas outlet 70: rotary shaft 71, 72, 73: first to third supply wings

Claims (8)

In the waste tire pyrolysis device having a hopper to inject waste tire and a plurality of inlet opening and closing valves,
The pyrolysis apparatus 20 includes a first inlet plate 30 and a second inlet plate 30 ′ in the casing 21 in order to decompose the tire pieces 1 pyrolyzed in an indirect heating manner step by step. The upper and lower compartments are respectively partitioned by a third inlet plate 30 ″, and an electrothermal heating coil 40 is installed outside the casing 21 to heat and thermally decompose the incoming tire piece 1, wherein the pyrolysis apparatus A plurality of auxiliary heating coils 43 for heating the inner part of the 20 are separately mounted to the lower portions of the inflow plates 30, 30 ′ and 30 ″ so as to be uniform with respect to the incoming tire pieces 1. While the heating takes place, the pyrolysis device 20 for moving the pyrolyzed tire fragment 1 to each outlet 31, 31 ′, 31 ″ formed in the inlet plate 30, 30 ′, 30 ″ In the center part, the rotary shaft 70 to which the feed blades 71, 72, 73 which transfer the tire fragment 1 are attached is attached, The thermal decomposition of the solid residues discharge portion (9 ') is a continuous waste tire pyrolysis apparatus having a uniform heat transfer capability, characterized in that attached to the lower end of the casing 21 to discharge 11.
The method of claim 1,
The discharge part 9 'includes first and second discharge grooves 51 and 51' for discharging the pyrolyzed solid residue 11, and first and second shutoff edges 53 and 53 '. A continuous waste tire pyrolysis apparatus having a uniform heat transfer function, characterized in that the first and second insertion grooves (52, 52 ') to be fitted.
The method of claim 1,
The internal temperature and pressure of the pyrolysis device 20 is a continuous waste tire pyrolysis device having a uniform heat transfer function, characterized in that 250 ~ 350 ℃ and 560 ~ 600 mmhg.
The method of claim 1,
Angle (θ2) formed by both sides of the inlet plate (30, 30 ', 30 ") is a continuous waste tire pyrolysis device having a uniform heat transfer function, characterized in that 60 ~ 65 °.
The method of claim 1,
Continuous waste tire pyrolysis apparatus having a uniform heat transfer function, characterized in that the angle (θ1) formed by the supply wings (71, 72, 73) is 15 °.
The method of claim 1,
Continuous tire pyrolysis apparatus having a uniform heat transfer function, characterized in that the pyrolysis time in which the tire pieces (1) are introduced from the hopper (2) and discharged to the outlet (54) is 40 minutes to 60 minutes.
The method of claim 1,
Continuous rotational tire pyrolysis apparatus having a uniform heat transfer function, characterized in that the revolutions per minute (RPM) of the rotary shaft 70 is 0.1 revolutions.
Continuous waste tire pyrolysis method is equipped with a uniform heat transfer function,
An inflow step (first step) of introducing the tire pieces 1 into the pyrolysis apparatus 20 through the hopper 2,
The first pieces of tires 1 introduced into the first inlet plate 30 are formed in primary contact with the supply blades 71, 72, and 73 attached to the upper end of the rotation shaft 70. Transferred to the middle portion of the pyrolysis apparatus (second step),
The tire pieces 1 conveyed to the middle portion of the pyrolysis apparatus are in secondary contact with the feed vanes 71 ', 72', 73 'attached to the middle portion of the rotation shaft 70, and the secondary inlet plate 30'. (3) the step of being transferred to the lower end of the pyrolysis device through the second outlet (31 ') formed in the),
The tire pieces 1 conveyed to the lower end are formed on the tertiary inlet plate 30 ″ while making third contact with the supply blades 71 ″, 72 ″, 73 ″ attached to the lower end of the rotation shaft 70. A continuous waste tire pyrolysis method having a uniform heat transfer function, characterized in that it comprises a step (fourth step) to be discharged downward (fourth step) discharged to the discharge portion (9 ') through the outlet (31 ").

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