JPH10205735A - Incinerator and incinerating method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the pollution due to black smoke from being generated when waste tires or wastes of polymer compound molded items are incinerated. SOLUTION: The incinerator 1 includes a furnace body 2 and an exhaust cylinder 3 provided at the upper part of the body 2. The furnace body 2 has a feed port 4 provided on its side wall through which matters to be burned are fed, a takeout port 5 from which combustion residues are taken out, and a required number of air flow adjusting means 6 to adjust combustion. And the lower part of the exhaust cylinder 3 extends into the body 2 and a required number of vent holes 9 are provided through the bottom plate 8 and side wall of the cylinder 3.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

TECHNICAL FIELD The present invention relates to an incinerator and an incineration method. More specifically, the present invention relates to an incinerator and an incineration method capable of preventing black smoke pollution caused by burning of a high molecular compound such as rubber or plastic in an object to be burned.
Also, the present invention relates to an incinerator and an incineration method which can raise the temperature of the inside of the furnace without requiring additional fuel and can be manufactured at low cost.

[0002]

2. Description of the Related Art Tire production is also growing rapidly due to the rapid growth of automobile production. Accordingly, a large amount of waste tires are generated. Some of these waste tires are used for producing recycled rubber, retreaded tires, and the like. However, most of them are disposed of by incineration. In addition, a large amount of these waste products are generated due to growth in the production of industrial materials and household goods molded by using polymer compounds such as rubber and plastic. Almost all of the waste products of these compacts are disposed of by incineration or the like.

[0003]

Among the above-mentioned products made of products such as rubber and plastics, the amount of waste tires is remarkably large. Moreover, the structure of the tire is complicated and disposal by incineration is not easy. At the time of incinerating waste tires, rubber has a very high combustion temperature, so it is difficult to completely burn rubber, and a large amount of black smoke is generated, which is one of the causes of so-called black smoke pollution. Various incinerators have been proposed to eliminate black smoke pollution caused by such incineration of waste tires. However, conventionally proposed incinerators are large and expensive,
Further, a large amount of fuel was required to keep the inside of the incinerator at a high temperature. In addition, there was a problem that black smoke pollution could not be completely eliminated. When incinerating and disposing of waste industrial materials and household goods, there is almost the same problem as in the case of waste tires.

[0004] The present invention solves the above-mentioned problems, and includes an incinerator and an incinerator capable of preventing the occurrence of black smoke pollution when incinerating and disposing of waste tires and wastes of molded polymer compounds. The aim is to provide a method. Another object of the present invention is to provide an incinerator and an incineration method that can be manufactured at a low cost by using a waste gas cylinder body or the like and that can raise the temperature of the incinerator to a high temperature without using fuel. I do.

[0005]

Means of the present invention taken to solve the above problems are as follows. According to a first aspect of the present invention, there is provided an incinerator including a furnace body and an exhaust pipe provided in the furnace body, wherein the furnace body is openable and closable for charging an object to be burned. An inlet, an openable / closable outlet for taking out combustion residues, and air inflow adjusting means for adjusting the amount of air flowing into the furnace main body, wherein the exhaust pipe has a required length at the base end side of the furnace. The exhaust pipe is protruded into the main body, the base end of the exhaust stack is closed, and a required number of ventilation holes are provided in a side wall in the furnace main body of the exhaust stack. An incinerator characterized by the following.

In the second invention, the furnace body and / or
Alternatively, the incinerator according to the first aspect of the present invention is characterized in that an exhaust pipe provided at an upper portion of the furnace body is manufactured using a gas cylinder body.

According to a third aspect of the present invention, there is provided a method for incinerating a polymer compound molded body, wherein a small amount of air is introduced into the furnace main body from the outside, and the burnable polymer compound molded body is reduced in oxygen. A method for incinerating a molded polymer compound, comprising a step of burning in a state.

According to a fourth aspect of the present invention, there is provided a method for incinerating a waste tire, wherein a small amount of air is introduced into the furnace main body from the outside while the rubber constituting the waste tire, which is an object to be burned, is reduced in oxygen. A method for incinerating a waste tire, comprising a step of burning in a state and a step of heating and welding a bead wire constituting the waste tire in a normal oxygen state after the rubber has burned.

A material having a melting point equal to or higher than the melting point of the bead wire forming the waste tire in consideration of the incineration of the waste tire or the like is provided in the furnace body constituting the incinerator and the exhaust pipe provided in the furnace body. Is used. In particular, a gas cylinder made of a material having such properties is preferable.
Considering the production cost, a waste gas cylinder is more preferable.
It is preferable that the exhaust pipe has a relatively low height and a relatively large inner diameter so that air can easily flow into the furnace body from above.

[0010] It is preferable that a plurality of air inflow adjusting means are provided on the side portion of the furnace main body in a uniform arrangement. This is because air is almost evenly applied to the heated bead wire during incineration of waste tires. The base end side of the exhaust stack is introduced so as to protrude into the furnace body. Its lower surface is closed by a bottom plate. As a result, the black smoke generated at the time of incineration in the furnace body does not directly enter the exhaust pipe nor to the outside.
As a result, black smoke tends to cause convection in the furnace body. A vent hole is provided in a side wall of the exhaust pipe. A plurality of ventilation holes are provided in a uniform arrangement. The air taken in from the upper part of the exhaust stack enters the furnace body evenly through the vent. At the same time, white smoke generated after convection in the furnace body uniformly enters the exhaust stack through the vent hole.

(Operation) A case where the waste tire is burned using the above incinerator will be described. The waste tire is put into the furnace body through an inlet provided in the side wall and ignited. After the ignition, the air inflow adjusting means is closed. When the rubber constituting the tire starts burning, black smoke is generated and the inside of the furnace body is filled.

From the upper part, air enters the exhaust tube little by little, and enters the furnace body through the vent holes provided in the side walls. This air has a lower temperature than the black smoke in the furnace body. Thus, the air is heavier than the black smoke and travels down the furnace body. At the same time, the hot black smoke goes to the top. As a result, convection occurs in the furnace body. Although very small, it is also conceivable that air can enter the main body from the gap of the lid from the closed inlet and the air inflow adjusting means. In any case, the air in the furnace main body is extremely lean. In this specification, such a state is referred to as a low oxygen state.

As the convection progresses in the furnace body, the black smoke gradually decreases and changes to white smoke, and the amount of the white smoke also decreases. This is thought to be due to the fact that oxygen in the air was converted into active oxygen with high reactivity during the convection, and the oxygen reacted with black smoke to change to white smoke.

Part of rubber also burns under low oxygen conditions,
Most turn into liquids. This is because of the activation energy of the reactive oxygen which is rich in the above-mentioned reaction, the main chain of the rubber, namely
It is considered that a part of the double bond between carbons is broken to lower the molecular weight, and the solid changes to a liquid. This liquid is a type of heavy oil and generates a large amount of heat. Due to the combustion of the liquid, the inside of the furnace main body becomes extremely hot, and the remaining bead wire is in a state close to a molten state. The liquid is completely burned out when all the smoke discharged from the exhaust stack becomes white smoke and the amount of the white smoke becomes extremely small. in this way,
The temperature inside the furnace body can be made extremely high by the liquid, and there is no need to replenish the fuel from the outside and no fuel cost is required.

At this time, the air inflow adjusting means is opened, and a large amount of air is introduced into the furnace body from outside. In this specification, such a state is referred to as a normal oxygen state. When the air inflow adjusting means is opened to bring the normal oxygen state instantaneously, the inside of the furnace body also instantaneously becomes hotter and the bead wire is welded. After cooling, the welded bead wire is taken out from the exit, and incineration of the waste tire is completed. In this way, black smoke pollution can be prevented.

The operation at the time of incineration of a molded article made of only rubber other than tires is almost the same as the operation at the time of incineration of the rubber of the waste tire. It should be noted that the same applies to the case of a molded body composed of only plastic.

In the case where the furnace body constituting the incinerator and the exhaust pipe provided in the furnace body are made of a gas cylinder body, particularly a waste gas cylinder body, a bead whose waste gas cylinder body or the like is used for tires or the like. Since it has a melting point higher than the melting point of the wire, an incinerator that can withstand high temperatures can be manufactured at low cost. In addition, waste gas cylinders can be used effectively.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the embodiments shown in the drawings. FIG. 1 is a perspective view of an incinerator according to the present invention, and FIG. 2 is an end view of a main part. The incinerator 1 includes a furnace body 2 and an exhaust pipe 3 provided on the upper part of the furnace body 2.
And The furnace body 2 is a waste gas cylinder for liquefied natural gas of 500 kg, and the exhaust pipe 3 is formed by processing a waste gas cylinder for liquefied natural gas of 50 kg.

The furnace main body 2 is provided with an inlet 4 for charging an object to be burned above the side wall, an outlet 5 for taking out a residue of combustion, an air inflow adjusting means 6, and a supporting leg 7 below the side wall. The inlet 4 has a lid 41 that can be opened and closed by turning. The opening 5 is a lid 5 that can be opened and closed by rotating.
1 is provided. The air inflow adjusting means 6 is provided at two locations facing each other, and has lids 61 which can be opened and closed by sliding. The four supporting legs 7 are provided in an even arrangement. Almost the lower half of the exhaust stack 3 is the furnace body 2
It is provided within. The lower surface of the exhaust tube 3 is closed by a bottom plate 8, and four ventilation holes 9 are provided on the side wall of the furnace body 2 in the furnace main body 2 in a uniform arrangement in the circumferential direction. A cap member 11 is provided above the exhaust pipe 3 so as not to enter the exhaust pipe 3 even when rain, snow, or the like falls.

(Operation) The operation of the present embodiment will be described with reference to the drawings. Here, a case where 15 waste tires of a passenger car are incinerated will be described. Close the lid 51 of the outlet 5,
The lid 61 of the air inflow adjusting means 6 is opened, five waste tires are thrown in from the slot 4, and burning newspaper is thrown in the waste tires to ignite the waste tires. After ignition, the remaining ten tires are put in, and the air inflow adjusting means 6 is closed. When the rubber constituting the waste tire starts burning, it generates black smoke and fills the furnace body 2. At the same time, a small amount of air enters the exhaust stack 3 from above. This air has a lower temperature than the black smoke in the furnace main body 2 and therefore moves heavily downward, and enters the furnace main body 2 through the ventilation holes 9 provided in the side walls.

The inside of the furnace main body 2 is in a low oxygen state. At this time, in the upper part of the furnace main body 2, heavy air having a low temperature is located at the upper part, and light black smoke having a high temperature is located at the lower part. Therefore, immediately, the low temperature air goes to the lower part, and the high temperature black smoke goes to the upper part, and convection occurs in the furnace body 2. The convection is considered to occur along the inner surface of the furnace main body 2 and the bottom plate 8 of the exhaust stack 3 in four rounds.

In the meantime, while the two are gradually and evenly mixed, oxygen in the air is considered to be converted into active oxygen with high reactivity due to the synergistic effect of the two states of the low oxygen state and the high temperature state. Can be It is considered that such reactive active oxygen reacts with black smoke and gradually changes to white smoke. Such a reaction is repeated one after another, and it is considered that black smoke gradually decreases and changes to white smoke, and the amount thereof also decreases.

At the same time, the rubber also partially burns under a low oxygen condition at the same time, and is mostly exposed to the reactive oxygen which is rich in the above-mentioned reaction, and the main chain of the rubber, that is, the carbon-carbon double bond. It is considered that a part of is cut to lower the molecular weight, and the solid changes to a liquid. This liquid is a type of heavy oil and generates a large amount of heat. Due to the combustion of the liquid, the temperature inside the furnace main body 2 becomes extremely high, and the remaining bead wire is brought into a state close to a molten state. The liquid is completely burned out when all the smoke discharged from the exhaust stack becomes white smoke and the amount of the white smoke becomes extremely small. As described above, the inside of the furnace main body 2 can be made extremely high by the liquid, so that it is not necessary to replenish the fuel from the outside and the fuel cost is unnecessary.

At this time, the air inflow adjusting means 6 is opened, and a large amount of air is introduced into the furnace body 2 from the outside to bring the furnace into a normal oxygen state. When the normal oxygen state is instantaneously brought into this state, the temperature inside the furnace main body 2 instantaneously further rises, and the bead wires are welded and integrated. After cooling, the welded and integrated bead wire is taken out from the outlet 5 to complete the incineration of the waste tire.
In this way, black smoke pollution can be completely prevented.

The furnace body 2 constituting the incinerator 1 and the exhaust pipe 3 provided on the upper part of the furnace body 2 are manufactured using a waste gas cylinder body. It has a melting point above the melting point of the bead wire. Therefore, the incinerator 1 that can withstand high temperatures can be manufactured at low cost.

The terms and expressions used in the specification are merely illustrative and not restrictive, and terms and equivalents to the features and some of the features described herein are used. There is no intention to exclude expression. It goes without saying that various modifications are possible within the scope of the technical idea of the present invention.

[0027]

The present invention has the above configuration and has the following effects. (A) Black smoke generated by the combustion of a high molecular compound such as rubber causes convection in the furnace body while being uniformly mixed with a small amount of air entering from an exhaust pipe. During that time, the black smoke turns into a small amount of white smoke, thus preventing black smoke pollution.

(B) The base end side of the exhaust pipe is protruded into the furnace body and is introduced, and the lower surface thereof is closed by a bottom plate. Black smoke generated at the time of incineration in the furnace main body by this bottom plate does not directly enter the exhaust pipe nor to the outside. As a result, the black smoke tends to cause convection in the furnace main body, and it is promoted to change to white smoke, thereby effectively preventing black smoke pollution.

(C) When the furnace body constituting the incinerator and the exhaust pipe provided on the upper part of the furnace body are manufactured by using a waste gas cylinder frame or the like, the incinerator which can withstand high temperatures is used. It can be manufactured at low cost.

(D) Since the inside of the incinerator is in a low oxygen state and the rubber burns at a high temperature, a part of the main chain, that is, a double bond between carbon and carbon is cut off, and the low molecular weight is reduced. From solid to high calorific value liquid. Accordingly, this liquid becomes a fuel having a high calorific value, and the inside of the incinerator can be heated to a high temperature. Therefore, it is not necessary to replenish the fuel from the outside and the fuel cost is unnecessary.

[Brief description of the drawings]

FIG. 1 is a perspective view of an incinerator according to the present invention.

FIG. 2 is an end view of a main part of the incinerator according to the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Incinerator 2 Furnace main body 3 Exhaust pipe 4 Input port 41 Lid 5 Outlet 51 Lid 6 Air inflow adjusting means 61 Lid 7 Support leg 8 Bottom plate 9 Vent hole 11 Cap member

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁶ Identification code FI F23G 7/12 ZAB F23G 7/12 ZABA

Claims (4)

[Claims] 1. An incinerator, comprising: a furnace main body; and an exhaust pipe provided in the furnace main body, wherein the furnace main body has an openable / closable inlet for charging an object to be burned; An openable / closable outlet for taking out combustion residues, and air inflow adjusting means for adjusting the amount of air flowing into the furnace main body, wherein the exhaust tube has a base end protruding into the furnace main body by a required length. The exhaust tube is closed, the base end of the exhaust tube is closed, and a required number of ventilation holes are provided in a side wall in the furnace body of the exhaust tube. , Incinerator. 2. The incinerator according to claim 1, wherein the furnace body and / or the exhaust pipe provided in the furnace body are manufactured using a gas cylinder body. 3. A method for incinerating a polymer compound molded body, the method including a step of burning a polymer compound molded body to be burned in a low oxygen state while flowing a small amount of air into a furnace body from outside. A method for incinerating a molded polymer compound, comprising: 4. A method for incinerating a waste tire, wherein a small amount of air flows into the furnace main body from outside to burn rubber constituting the waste tire as a burnable object in a low oxygen state. After the rubber has burned, a method of heating and welding a bead wire constituting the waste tire in a normal oxygen state, comprising the steps of: