JPH0821612A - Tire-burning apparatus - Google Patents

Abstract

PURPOSE:To enable igniting of a tire satisfactorily through even heating of the tire as a whole without specially preparing it preliminarily such as cutting it into small pieces and prevent related environmental pollution by a method wherein gas for combustion to produce remaining heat by an ignition device is passed through an air chamber and fed into a primary combustion chamber from under and the resulting combustible gas is burnt in a secondary combustion device. CONSTITUTION:A lid 14 is removed from a tire-burning apparatus 10 and, after opening a primary combustion chamber 18, a plurality of tires 10a are placed in a pile inside a vessel 13, the lid 14 is put back in place, and the primary combustion chamber 18 is hermetically closed. An air-feeding device 22 is actuated and simultaneously an ignition device 24 is lighted and the tires 10a inside the primary combustion chamber 18 are heated from under. The tires 10a become heated evenly and undergo thermal decomposition so that the tires are ignited satisfactorily. The thermal decomposition of the tires produces a gas useful for heating, which is burnt completely in a secondary combustion device 26. After the thermal decomposition of the tires has been assumed to be a steady state, the ignition burner in the secondary combustion device 26 is stopped from working and the combustion or the thermal decomposition is shifted to a self-sustained operation.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion device, and more particularly to a combustion device using a tire as a fuel.

[0002]

2. Description of the Related Art Recently, research on recycling and recycling of waste tires (hereinafter simply referred to as "tires") has been conducted due to increasing social concern about environmental protection. For the recycling of tires, there is a method of chemically treating the rubber components that make up the tire to reuse it as heavy oil or light oil, and using the tire itself as fuel to generate steam or hot water or as a heat source for a heating furnace. There is a way to do it.

[0003]

When a tire is used as a fuel, a large amount of black smoke or tar is often generated by burning the synthetic rubber which is the main component of the tire.
In order to prevent this, the tire combustion apparatus stores the main body of the tire in which the tire main body is housed and mainly causes a thermal decomposition reaction, and combustible gas generated by the thermal decomposition reaction of the tire in the primary combustion chamber. A two-stage combustion type combustion device having a secondary combustion device for complete combustion is widely used. In addition, in a tire combustion apparatus, generally, in order to facilitate the supply to the combustion apparatus and make it easy to burn, a pretreatment for cutting the tire into small pieces is performed. Particularly in the case of large tires for large automobiles such as trucks and buses, cutting is indispensable in order to facilitate the supply of tires to the combustion device.

On the other hand, the tire is composed of cords such as carcass, belt and bead wire, and synthetic rubber. In radial tires, which are the mainstream of tires in recent years, and particularly tires for large automobiles such as buses and trucks, steel cords formed by twisting thin steel wires are widely used. Tires for large vehicles are large in size,
The use of steel cord makes it difficult to cut tires and requires special equipment to cut large tires.

Also, since the steel cord does not burn,
After the tire is completely burned, it remains in the combustion chamber as a combustion residue together with unburned ash and carbon. After the end of one combustion cycle, in order to burn the next tire, the steel cord left in the combustion device as a combustion residue must be removed. In order to remove the combustion residues from the combustion device, it is necessary to cut the steel cords by cutting before burning, especially for large tires. And, the work of removing the steel cord as the combustion residue in the combustion device is not only a heavy labor, but also the carbon that remains unburned rises along with the ash along with the steel cord, so that the living environment around the combustion device is installed. It also causes deterioration of the health of workers. In particular, in a large tire, a large amount of steel cords are used and individual lumps also become large. Therefore, it is also necessary to easily remove the combustion residue of the tire from the combustion device.

The present invention has made it a technical object to solve these problems of the conventional tire combustion apparatus, and it is not necessary to carry out a pretreatment for cutting a tire, particularly a large tire, into small pieces prior to combustion, and Another object of the present invention is to provide a combustion device that can easily supply the fuel to the combustion chamber and take out the combustion residue.

[0007]

According to the present invention, a hollow main body having an opening at the upper end and an upper end opening of the main body is closed.
A sealing lid, a partition plate that is provided substantially horizontally inside the main body, and divides the internal space of the main body into an upper primary combustion chamber and a lower air chamber, and a primary combustion formed on the partition plate. Through a plurality of communication holes that connect the chamber and the air chamber, an air supply source that supplies air to the air chamber, an ignition device that has an outlet in the air chamber, and a pyrolysis reaction of the tire in the primary combustion chamber. A secondary combustion device that completely burns the generated combustible gas, and a carrying device that carries the tire into the primary combustion chamber through the upper end opening of the main body, or carries out the combustion residue of the tire.
The gist is a tire combustion device equipped with. Preferably,
The transfer device includes a crane and a basket-shaped container in which tires are deposited and placed.

[0008]

The transport device transports the tire into the primary combustion chamber through the opening at the upper end of the main body. Since the combustion gas for residual heat by the ignition device is supplied from the lower side of the primary combustion chamber through the air chamber, even if the tire in the primary combustion chamber is a large tire, pretreatment such as cutting is not required. The entire tire is heated uniformly and ignites well. In this way, the tire that has been preheated and ignited partially burns to generate flammable gas due to thermal decomposition. The combustible gas is completely combusted by the secondary combustion device. The tire combustion residue is discharged from the primary combustion chamber through the upper end opening of the main body by the transport device. Since the tire is transferred to the primary combustion chamber through the opening provided at the upper end of the main body or the combustion residue is discharged from the primary combustion chamber through the opening using the transport device, it is necessary to cut the tire. Disappears.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the accompanying drawings. Referring to FIG. 1, a tire combustion apparatus 10 according to a preferred embodiment of the present invention includes a main body 12 which is a hollow body having an opening at its upper end. Body 12
A plurality of tires 10a are accumulated in the internal space of the. The tire 10a is heated here, and a flammable gas is generated mainly by the thermal decomposition reaction of the rubber component of the tire. Body 12
Has a substantially cylindrical shape in the illustrated embodiment, and has a double wall structure for circulating cooling water inside.

A lid 14 is removably attached to the upper portion of the main body 12 by using a known fixing means such as a gear lock device (not shown). Sealing means (not shown) such as a heat-resistant gasket or packing is provided between the main body 12 and the lid 14 to keep airtightness. A safety device 14a such as a safety valve or a rupture is provided on the top of the lid portion 14 in order to cope with a sudden increase in internal pressure due to abnormal combustion of the tire 10a.

A partition plate 16 is provided substantially horizontally in the internal space of the main body portion 12. The internal space of the main body portion 12 includes a primary combustion chamber 18 above the partition plate 16 and a lower side of the partition plate 16. And an air chamber 20 of The tire 10 a as fuel is deposited on the upper surface of the partition plate 16 in the primary combustion chamber 18. A plurality of communication holes 16a are formed through the partition plate 16. Air chambers 20 and 1 through a plurality of communication holes 16a
The next combustion chamber 18 communicates.

The tire combustion device 10 includes a tire 1 which is a fuel.
0a and a crane 11 as a transport device for transporting combustion residue such as steel cord which remains unburned after combustion.
And a basket-shaped container 13. The container 13 is
Preferably, it is made by forming a heat-resistant metal member into a basket shape. Still referring to FIG. 2, the container 13 has a locking means 13a such as a hook or a ring for locking the wire or chain from the crane 11 at the upper end. Further, the container 13 may be provided with a reinforcing member 13b made of heat-resistant metal on the bottom surface on which the tire is placed.

In the illustrated embodiment, the reinforcing member 13b is a rod having a rectangular cross section. Therefore, when the reinforcing member 13b is fixed so as to be in contact with the bottom surface of the container 13 on one surface of the reinforcing member 13b, when the reinforcing member 13b is arranged on the communication hole 16a formed in the partition plate 16, the communication hole is closed. However, it may obstruct the flow of air from here. Therefore, by preventing the reinforcing member 13b from obstructing the flow of air,
In order to supply air to the primary combustion chamber 18 as uniformly as possible, in the preferred embodiment of the present invention, the reinforcing member 13b is
It is fixed to the bottom surface of the container 13 at one side in the longitudinal direction.
Accordingly, even if the reinforcing member 13b is arranged above the communication hole 16a, the air passing through the communication hole 16a flows around the reinforcing member 13b as indicated by the arrow in FIG. Air is evenly supplied to.

Prior to the start of combustion, a plurality of tires 10a are accumulated in the container 13 without pretreatment such as cutting, and after the lid 14 of the tire combustion apparatus 10 is removed, the crane 11 and the tires 13a together with the container 13 are removed. 10a is carried into the primary combustion chamber 18 through the opening at the top of the main body 12. Alternatively, only the container 13 is moved by the crane 11 to the primary combustion chamber 18
After being placed inside, the tires 10a may be individually carried in through the upper end opening of the primary combustion chamber 18 without pretreatment such as cutting. After the combustion is completed, the lid 14 is removed and the crane 11 carries the combustion residue together with the container 13.

Further, the tire combustion device 10 is equipped with an air supply device 22. The air supply device 22 is an air supply source 22a including a fan, a blower, a compressor, or the like.
And an air supply pipe 22b. Air supply pipe 2
2b extends from the intake supply source 22a into the air chamber 20, and the air from the air supply source 22a is supplied to the air supply pipe 22.
b, the air chamber 20 and the communication hole 16a, the primary combustion chamber 1
8 is supplied.

Further, the tire combustion device 10 includes an ignition device 24.
Is provided. In the illustrated embodiment, the ignition device 2
Reference numeral 4 denotes a combustion device that uses a liquid fuel such as kerosene, light oil, or heavy oil as a fuel, and includes a tank 24a, a combustion device 24b, and a burner pipe 24c. The combustion device 24b is
Liquid fuel from the fuel tank 24a and air from an air supply source (not shown) are mixed and burned. Combustion device 24
The high temperature gas formed in b is supplied to the air chamber 20 via the burner pipe 24c, and the primary combustion chamber 18 and the tire 10a are heated from below via the communication hole 16a to heat the tire 1
Ignite 0a.

In the tire combustion apparatus of the present invention, the ignition device 2
4 is characterized in that its outlet is provided in the air chamber 20. In the illustrated embodiment, the burner tube 24 c of the combustion device 24 extends into the air chamber 20. By providing the burner pipe 24c in the air chamber 20 instead of in the primary combustion chamber 18, it is possible to uniformly heat the tire 10a from the lower side and ignite it in a wide range.
After igniting a, the thermal decomposition reaction is accelerated, and the combustible gas is generated early. Further, after the tire 10a is ignited, soot and tar generated by the thermal decomposition reaction of the tire 10a are prevented from adhering to the burner tube 24c, and it is not necessary to clean the ignition device 24 in the next use.

The tire combustion device 10 further includes a secondary combustion device 26. The secondary combustion device 26 is a gas pipe 26.
The primary combustion chamber 12 is communicated from the side portion of the main body portion 12 via a and the shutoff valve 26b. The flammable gas generated in the primary combustion chamber 12 mainly by the thermal decomposition reaction of the tire 10a is introduced into the secondary combustion device 26 via the gas pipe 26a, and is completely combusted and exhausted therein. Secondary combustion device 2
The high temperature gas generated in 6 can be used as a heating source for various systems provided downstream, for example, a steam generator, a hot water device, a heating furnace, or the like.

FIG. 3 is an enlarged sectional view of the secondary combustion device 26.
Referring to, the secondary burner 26 includes an ignition burner 28
Is provided. In FIG. 3, the combustible gas generated in the primary combustion chamber 18 flows from the left to the right. In the ignition burner 28, air and fuel are mixed and burned, and the generated flame is ejected into the secondary combustion device 26 from the flame port 28a provided around the secondary combustion device, and the secondary combustion device 26 is discharged. To heat up. A combustion tube 26d having a substantially cylindrical shape is arranged downstream of the flame port 28a. Combustion tube 2
A large number of small holes are formed in the peripheral wall of 6a, which has the effect of stabilizing the flame and promoting heat transfer to the upstream side, and promoting combustion of combustible gas in the secondary combustion device 26. There is. Two air supply pipes 26 are provided downstream of the combustion pipe 26a.
e is provided, and air is supplied from here to finally completely burn the unburned components.

Next, the operation of the tire combustion apparatus 10 according to the preferred embodiment of the present invention will be described. First, the lid 14 of the tire combustion device 10 is removed from the main body 12 and
The next combustion chamber 18 is opened. Next, the tire combustion device 10
A plurality of tires 10 inside the container 13 of the carrier device outside the vehicle.
a is sequentially deposited. A plurality of tires 10 in the container 13
After depositing a, the wire or chain of the crane 11 is locked to the locking means 13a at the upper end of the container 13, and the container 13 is suspended together with the accumulated tire 10a, and the tire 10a is placed in the primary combustion chamber 18. And container 13 is placed.
Alternatively, as described above, after the container 13 is first arranged in the primary combustion chamber 18, the tires 10a may be individually stacked in the container 13. Primary combustion chamber 1 of tire 10a as fuel
After completion of the placement inside 8, the lid 14 is attached to the upper part of the main body 12 and hermetically sealed (see FIG. 1).

Next, the air supply device 22 is operated and the ignition device 24 is ignited to heat the tire 10a in the primary combustion chamber 18 from below. The air from the air supply device 22 and the combustion gas from the ignition device 24 pass through the air chamber 20 and the communication holes 16 a of the partition plate 16, and the primary combustion chamber 1
8 is uniformly supplied. During this time, the secondary combustion device 26 is also ignited. Since the tire 10a is heated from the lower side of the tire 10a, the thermal decomposition reaction is favorably performed. The ignition device 24 is stopped after it is confirmed that the tire 10a is ignited by a temperature sensor (not shown) provided in the main body 12. The combustible gas generated by the thermal decomposition of the tire 10a is completely combusted in the secondary combustion device 26. After the pyrolysis reaction of the tire 10a shifts to a steady state, the ignition burner 28 of the secondary combustion device is stopped and the tire is self-sustainingly burned or pyrolyzed.

After the tire 10a is completely burned, the air supply device 22 is stopped, the lid 14 is removed, and the container 13
The wire or chain of the crane 11 is locked to the locking portion 13 a of the container 11 to suspend the container 13 and remove the combustion residue from the primary combustion chamber. Since the tire and its combustion residue are transferred through the upper opening of the main body 12 using the crane and the basket-like container 13, it is not necessary to cut the tire into small pieces. Further, since the combustion apparatus 10 according to the present invention uniformly heats the tire from the lower side through the air chamber 20, it is possible to satisfactorily combust or thermally decompose a large tire without cutting it.

Although the preferred embodiment of the present invention has been described, it is obvious to those skilled in the art that the present invention is not limited to this embodiment and various improvements and modifications can be made without departing from the spirit and scope thereof. It is about to be. For example, although the main body 12 has a substantially cylindrical shape in FIG. 1, it may be a box having a rectangular cross section, for example. Furthermore, although the refractory material and the heat insulating material are not shown in the primary combustion chamber 18, such a material may be stuck inside.

The ignition device 24 may be a combustion device for gaseous fuel. Furthermore, it is possible to replace with an electric heater. Similarly, the ignition burner 28 of the secondary combustion device 26 may also be a combustion device for gaseous fuel. In short,
The ignition device 24 and the ignition burner 28 may be devices that generate high temperature gas. In the present embodiment, the reinforcing member 13b provided at the bottom of the container 13 is a bar member having a rectangular cross section,
As shown in FIG. 2, in order to prevent the communication hole 16a of the partition plate 16 from being closed, the partition plate 1 is provided so as to contact the bottom surface of the container 13 at one side in the longitudinal direction thereof.
The cross section of the reinforcing member 13b is not limited to a rectangular shape unless the communication hole 16a of No. 6 is closed. The reinforcing member 13b may be, for example, a member having a circular or other cross section.

Further, the container 13 need not have a height near the top of the deposited tire 10a, as shown, for example, at a mid or lower height of the deposited tire 10a. It may be. In FIG. 1, the crane 11, which is a carrier, is a cantilever type crane, but it may be a monorail or an overhead crane. Alternatively, the crane 11 may be a variable speed crane.

[0026]

INDUSTRIAL APPLICABILITY The tire combustion apparatus of the present invention is capable of easily burning tires, particularly large tires for large automobiles such as buses and trucks, without cutting them, and burning the tire combustion residues. It can be easily carried out from the combustion chamber.

[Brief description of drawings]

FIG. 1 is a schematic side sectional view of a tire combustion apparatus according to a preferred embodiment of the present invention.

2 is a partially enlarged view of the tire combustion device shown in FIG.

FIG. 3 is a schematic cross-sectional view of a secondary combustion device.

[Explanation of symbols]

 10 ... Tire burning device 11 ... Crane 12 ... Main body part 13 ... Container 14 ... Closing part 16 ... Partition plate 18 ... Primary combustion chamber 20 ... Air chamber 22 ... Air supply device 24 ... Ignition device 26 ... Secondary combustion device

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location F23G 5/24 ZAB C 5/44 ZAB B 7/00 ZAB A

Claims (2)

[Claims] 1. A hollow main body having an opening at its upper end, a lid for closing and sealing the upper end opening of the main body, and a substantially horizontally provided inside the main body, with the internal space of the main body being at the upper side. A partition plate that divides the primary combustion chamber and the lower air chamber, a plurality of communication holes that are formed in the partition plate and that communicate the primary combustion chamber and the air chamber, and an air supply source that supplies air to the air chamber. An ignition device with an outlet in the air chamber, a secondary combustion device that completely burns the combustible gas generated by the pyrolysis reaction of the tire in the primary combustion chamber, and a primary combustion chamber through the upper opening of the main body. A tire combustion apparatus, comprising: a conveyor device that carries a tire into a combustion chamber or carries out a combustion residue of the tire. 2. The transport device comprises a crane and a basket-shaped container in which tires are deposited and placed.
An apparatus according to claim 1.