JPH03274309A - Incinerator for polymer material to be incinerated - Google Patents

Abstract

PURPOSE:To simultaneously incinerate general refuse by providing an air header on the outer periphery of an incinerator body in which a gas generation chamber, a baffle and a gas combustion chamber are sequentially disposed from its bottom, and so diffusing the air to the sections as to reversely turn each other. CONSTITUTION:Material is charged from an inlet 7 into a gas generation chamber 2, ignited, and combustion air is simultaneously injected from a nozzle 5a. The air amount at this time is limited to about 1/2-1/3 of amount necessary to completely burn it to incompletely burn it. The air is turned at a high speed in the chamber 2 to turn generated combustion gas, gathered to the center of an incinerator, and mixed with the air. This unburnet gaslike mixture gas is fed to a baffle 3, and reversely turned by the combustion air to be injected from a nozzle 56. Accordingly, the gas is diffused to become a turbulent flow, completely mixed with the air, and fed to a combustion chamber 4. With this structure, general refuse can be simultaneously incinerated.

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial Field of Application) The present invention relates to an incinerator for polymer-based incineration materials.

(Prior Art) There are several difficult problems in incinerating polymer-based incineration materials that generate a high amount of heat during combustion.

First of all, when the incinerated material is ignited, it has a high calorific value, so it gasifies into air, and if the air necessary for combustion is provided, it burns at a high temperature, making it impossible to control the combustion.

Conversely, if there is insufficient combustion air, black smoke will be emitted due to incomplete combustion. The capacity of an incinerator is usually indicated by the amount of incineration that can be incinerated per - hour, and the incinerated material is divided into - hours or - hours into the incinerator several times, and a specified amount is burned over a specified period of time. Must be incinerated. However.

As mentioned above, it is very difficult to control the combustion of highly caloric incinerated materials, and the incinerated materials are gasified all at once in an extremely short period of time. Therefore, it has been difficult to burn a certain amount of incineration material over a specified period of time.

The conventional solution to this problem was to use a water-cooled wall for the incinerator wall to remove the generated heat from the incinerator wall, and to reduce the amount of radiant heat from the incinerator wall to heat the incinerated material. This is to prevent the gas from becoming a gas.

However, this method has the following problems: 2.Since the furnace wall is a water-cooled iron plate, the iron plate is severely oxidized at high temperature, and the life of the incinerator is short. A large amount of water is required for water cooling. Moreover, heated water gets dirty with rust etc.
Other methods of use are limited. When replacing iron plates with stainless steel, cracks appear due to stress corrosion. Additionally, when the combustion gas decreases as the amount of incinerated material in the incinerator decreases, the temperature inside the incinerator will drop rapidly because the furnace walls are water-cooled, and the gas that has cooled by touching the furnace walls will be incomplete. It is emitted as black smoke as it burns.

(Problems to be Solved by the Invention) The present invention was made in order to solve the problems of the conventional technology, and it is possible to control the combustion rate of polymer-based incinerated materials without using a water-cooled wall, and to Complete combustion, and furthermore,
The object of the present invention is to provide an incinerator for polymer-based incineration materials that can simultaneously incinerate not only polymer-based incineration materials but also general garbage.

(Means for solving IIM) In order to achieve the above object, the present invention provides a gas generation chamber, each having a cylindrical refractory furnace wall and disposed at the lowest part;
A baffle part placed above the gas generation chamber and having a gas passage hole with an inner diameter smaller than the inside diameter of the gas generation chamber, and a gas combustion chamber placed above this baffle part and having an inner diameter approximately the same as that of the gas generation chamber are integrally connected. an incinerator body, an air header that is arranged so as to surround the outer periphery of the furnace wall of the incinerator body and supplies combustion air to the gas generation chamber, baffle part, and gas combustion chamber, respectively, and a blower that sends air to the air header. The gas generation chamber is equipped with a plurality of nozzles provided on the furnace wall so that combustion air is blown from an air header and the blown air swirls in one direction along the inner periphery of the furnace wall. As for the baffle part.

Combustion air is blown into the furnace wall from an air header, and a plurality of nozzles are provided so that the blown air swirls in the opposite direction to the swirling direction of the air in the gas generation chamber. The combustion chamber is provided with a plurality of nozzles on its furnace wall, through which combustion air is blown from the air header, and which are provided so that the blown air swirls in the same direction or in the opposite direction to the swirling direction of the air in the buckle part. The configuration is as follows.

(Function) According to this configuration, in the gas generation chamber, the amount of combustion air supplied is restricted and the temperature rise is suppressed to prevent the incinerated material from being gasified all at once. A turbulent flow is created in the combustion gas to achieve complete mixing of the combustion gas and air, and in the gas combustion chamber, sufficient combustion air and the time necessary for the reaction are provided for complete combustion.

Thereby, it is possible to control the combustion rate of the polymer-based incinerated material and achieve complete combustion.

(Example) Hereinafter, embodiments will be described in detail with reference to the drawings.

FIG. 1 shows an incinerator according to an embodiment of the present invention.
Reference numeral 1 denotes an incinerator main body, which includes a gas generation chamber 2 disposed at the lowest part, a baffle part 3 having a gas passage hole 3a disposed at the upper part, and a gas combustion chamber 4 disposed at the upper part. , are integrally connected by a cylindrical refractory furnace wall 6.

The gas generation chamber 2 is provided with an incineration material input lower, and 1
1i13 is attached. The baffle portion 3 has an inner diameter of
The gas passage hole 3a is narrowed to an appropriate diameter smaller than the inner diameter of the gas generation chamber 2. Further, the gas combustion chamber 4 has the same inner diameter as the gas generation chamber 2, and has a combustion exhaust gas exhaust port 8. 9 is an air header which is arranged so as to surround the outer periphery of the furnace wall 6 of the incinerator main body 1 and supplies combustion air to the gas generation chamber, the baffle part and the gas combustion chamber, respectively; IO is a blower which sends air to the air header 9; The ventilation passage is provided with a valve 11 or a damper that can adjust the air volume. Furthermore, a partition 12 is provided inside the air header 9 in order to change the amount of air supplied to each chamber as necessary.

As shown in FIG. 2(a), the gas generation chamber 2 has combustion air blown into its furnace wall from an air header 9, and the blown air swirls in one direction along the inner periphery of the furnace wall. It is provided with a plurality of nozzles 5a, 5a provided to do so. As shown in FIG. 2(b), the baffle portion 3 has combustion air blown into the furnace wall from the air header 9, and the blown air is directed in a direction opposite to the swirling direction of the air in the gas generation chamber 2. A plurality of nozzles 5b are provided to rotate.

5b, and the gas combustion chamber 4 has a furnace wall with
a plurality of nozzles 5c into which combustion air is blown from the air header 9, and which are provided so that the blown air swirls in the same direction or in the opposite direction to the swirling direction of the air in the baffle section 3;
It is equipped with 5c.

Next, the operation of this embodiment will be explained. A predetermined amount of the incinerated material is introduced into the gas generation chamber 2 from the input lower and ignited. At the same time, combustion air is injected from a nozzle 5a provided on the furnace wall. First, the gas generation chamber 2 is designed to maintain the temperature of the gas generation chamber at about 800° C. or lower so that the gasification of the incinerated material does not occur suddenly. That is, the combustion air supplied from the nozzle 5a is 172~
The supplied air is limited to about 1/3 and swirls at high speed along the inner periphery of the furnace wall. Then, while creating a spiral shape, it also applies swirling force to the combustion gas generated from the incinerated material,
Air and combustion gases gather in the center of the furnace, and in the process mix,
The unburned gas, which lacks air, flows into the gas passage hole 3a of the baffle portion 3.

In short, in this gas generation chamber 2, the amount of combustion air supplied is restricted to prevent complete combustion, and the surface of the furnace wall is covered with an air layer to reduce heat accumulation on the furnace wall and radiation from the furnace wall. The aim is to suppress the rise in temperature and prevent the incinerated materials from turning into gas all at once. Note that the temperature and amount of gas generated within the gas generation chamber 2 can be easily adjusted by adjusting the amount of air supplied.

Combustion air injected from the furnace wall is further added to the unburned gas guided to the baffle section 3, and combustion is promoted while the unburned gas is guided to the combustion chamber. In addition, here, the swirling direction of the air blown from the furnace wall is opposite to the swirling direction in the gas generation chamber 2, and by forcibly giving such a flow, the furnace is heated in the gas generation chamber 2. The gas that has gathered at the center is then diffused or created to create turbulent flow to ensure complete mixing of combustion gas and air.

In the gas combustion chamber 4, the combustion gas led from the baffle part 3 mixes with combustion air, is given sufficient stagnation time for complete combustion, and all the remaining air necessary for complete combustion is sent to the furnace wall. It is given from the provided nozzle 5c. The swirling direction of the injected air in the gas combustion chamber 4 may be the same direction as the swirling direction in the baffle portion 3 or the opposite direction. The combustion gas is completely combusted by sufficient combustion air, the time required for the reaction, and the radiant heat from the furnace wall that has been sufficiently stored, and then a cyclone-shaped dust collection chamber (not shown) connected to the exhaust port 8 for the combustion exhaust gas is created. It is then discharged to the outside through the chimney.

In addition, since the furnace wall of this incinerator is constructed of refractory material, the furnace wall of the gas combustion chamber 4 can store a sufficient amount of heat, and even if the combustion gas decreases at the end of incineration, the inside of the combustion chamber remains The temperature does not drop, so complete combustion can continue until the incineration is completely finished.

In addition, the inside of the combustion chamber becomes high temperature as the combustion gas is completely combusted, but the radiant heat from the combustion and the radiant heat due to heat storage on the furnace wall are blocked by the baffle part that protrudes in the middle of the furnace and do not reach the gas generation chamber. Since there is no gas generation chamber, temperature rise in the gas generation chamber can be prevented.

(Effects of the Invention) As explained above, according to the present invention, (1) When incinerating a polymer-based incineration material, it is possible to prevent gasification of air and control the combustion rate.

■ It is possible to achieve complete combustion and eliminate the emission of harmful substances to the outside.

(2) Since a refractory furnace wall is used instead of a water-cooled wall, an incinerator can be constructed at low cost and with a long life.

[Brief explanation of drawings]

FIG. 1 is a sectional view of an incinerator according to an embodiment of the present invention, FIG. 2(a) is a sectional view taken along line XX in FIG. 1, and FIG. 2(b) is a sectional view taken along Y- The Y cross-sectional view, Figure 2 (c), is 2-2 in Figure 1.
FIG. 1...Incinerator main body, 2...Gas generation chamber, 3.
... Baffle part, 4 ... Gas combustion chamber, 5a, 5b,
5c...Nozzle, 6...Input port for incinerated material, 8
...Combustion exhaust gas outlet, 9 air header, blower.

Claims (1)

[Scope of Claims] A gas generation chamber (2) each having a cylindrical refractory furnace wall (6) and provided with an incineration material inlet (7) disposed at the lowest part; (2), a baffle part (3) having a gas passage hole (3a) having an inner diameter smaller than the inner diameter of the gas generation chamber (2); an incinerator body (1) in which a gas combustion chamber (4) having approximately the same inner diameter as 2) and having a combustion exhaust gas outlet (8) is integrally connected; and a furnace wall of the incinerator body (1). an air header (9) that is arranged so as to surround the outer periphery of the air header (9) and supplies combustion air to the gas generation chamber (2), the baffle section (3), and the gas combustion chamber (4), respectively; The gas generation chamber (2) has combustion air blown into the furnace wall from the air header (9), and the blown air flows along the inner periphery of the furnace wall. It includes a plurality of nozzles (5a) provided to rotate in one direction,
) is provided so that combustion air is blown into the furnace wall from the air header (9) and the blown air swirls in a direction opposite to the swirling direction of the air in the gas generation chamber (2). The gas combustion chamber (4) includes a plurality of nozzles (5b), and the air header (9) is attached to the furnace wall of the gas combustion chamber (4).
) into which combustion air is blown, and a plurality of nozzles (5c) provided so that the blown air swirls in the same direction or in the opposite direction to the swirling direction of the air in the baffle portion (3).
An incinerator for polymer-based incineration materials, characterized by comprising: