JP2000018532A - Incinerator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To incinerate waste without smoke and odor and prevent emission of dioxins and also prevent emission of soot and sparks of fire by providing a combustion cylinder forming a secondary combustion chamber, to communicate with a primary combustion chamber, and an exhaust cylinder communicating with the combustion cylinder, in the other closed end side of a combustion furnace body forming the primary combustion chamber. SOLUTION: This incinerator is constituted of an incinerator body 2 forming a primary combustion chamber 1 burning waste to be incinerated such as refuse, a combustion cylinder 4 communicating with the primary combustion chamber 1 and forming a secondary combustion chamber 3, and an exhaust cylinder 6 communicating with the combustion cylinder 4 and having an exhaust opening 5 at the upper end. A grate 16 is laid on the bottom of the combustion furnace body 2 and the combustion cylinder 4 communicating with the primary combustion chamber 1 and forming the secondary combustion chamber 3 at the closed other end side. A pair of temperature raising burners 17 communicating with the secondary combustion chamber 3 and also communicating with a fuel tank are fitted to the combustion cylinder 4 and arranged opposite to each other. A wire gauze 24 is provided in the joint 23 of the combustion cylinder 4 and the exhaust cylinder 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to garbage such as paper waste, wood waste, waste cloth, and the like.
The present invention relates to an incinerator for incinerating mixed garbage mixed with a small amount of kitchen garbage in a smokeless, odorless and pollution-free state.

[0002]

2. Description of the Related Art Conventionally, various types of incinerators of this type have been proposed. These basic forms include a combustion furnace body that has an inlet for incinerated materials such as garbage and forms a combustion chamber,
The combustion furnace body is provided with a door for opening and closing an inlet and a primary air inlet for supplying combustion air to the combustion chamber.

[0003] Further, as an improvement of the above-mentioned basic type, in order to improve the combustion efficiency, there are provided a blower for forcibly supplying secondary air to the combustion chamber and a combustion burner for supporting combustion. .

[0004]

[Problems to be solved by the invention]

[0005] However, in such conventional incinerators, depending on the type of garbage to be incinerated, in particular, when incinerating mixed garbage containing a small amount of rubber scraps and plastics, it is difficult to use a black garbage. There was a problem that smoke and odors were emitted, and dioxin was emitted, which had an adverse effect on the environment.

In order to increase the efficiency of incineration, mixed garbage during incineration may be stirred with a scraper or the like. At this time, a large amount of medium and sparks are scattered from the discharge cylinder into the atmosphere, and the surrounding air is removed. There was a problem of contamination.

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and is a garbage such as paper waste, wood waste, waste cloth, and the like, and a mixed garbage in which a small amount of rubber waste, plastics, kitchen garbage and the like are mixed with these wastes. Incineration without smoke and odor to reduce the emission of dioxin generated during incineration, and also prevent the discharge of medium and sparks into the atmosphere when the mixed garbage being incinerated is agitated with a scraper or the like. It is intended to provide a furnace.

[0008]

In order to solve the above-mentioned problems, according to the first aspect of the present invention, there is provided a roaster at a bottom portion of a combustion furnace body forming a primary combustion chamber, and an incineration material is provided at one end of the combustion furnace body. An inlet and an incineration ash outlet are provided, and a sealing door is provided on the incinerated material inlet and the incineration ash outlet so as to be openable and closable, and a combustion air supply control port is provided on the sealing door of the incineration ash outlet. On the other hand, a combustion cylinder communicating with the primary combustion chamber to form a secondary combustion chamber and an exhaust cylinder communicating with the combustion cylinder are provided on the other end closed side of the combustion furnace body. A pair of temperature-raising burners, which communicate with the combustion chamber to raise the temperature of the combustion gas and supply the air, are provided to face each other, and a mesh member is provided at a connection between the combustion cylinder and the exhaust cylinder. .

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below with reference to FIGS.

This incinerator comprises an incinerator body 2 forming a primary combustion chamber 1 for burning incineration materials such as garbage, and a combustion tube 4 communicating with the primary combustion chamber 1 to form a secondary combustion chamber 3. And an exhaust cylinder 6 communicating with the combustion cylinder 4 and having an exhaust port 5 at an upper end.

The combustion furnace body 2 is formed of a steel pipe or the like into a cylindrical structure of a double structure having a required diameter, and both end surfaces thereof are closed by a double structure of a steel plate. I have.

At one end of the combustion furnace body 2, an incineration material inlet 8 is provided.
And a combustion ash discharge port 9 are provided.

An inlet closing door 10 is provided at the combustion material inlet 8.
However, the combustion ash discharge port 9 is provided with a discharge port closing door 12 that can be opened and closed via hinges 13 and 14, respectively.

The outlet closing door 12 is provided with a combustion air supply adjusting port 15 for adjustingably sucking the combustion air in the primary combustion chamber 1.

At the bottom of the combustion furnace body 2, a roaster 16 is detachably mounted, and at the other end closed side is a combustion cylinder 4 communicating with the primary combustion chamber 1 to form a secondary combustion chamber 3. Is provided.

The combustion cylinder 4 has a pair of temperature increasing burners 17 communicating with the secondary combustion chamber 3 and communicating with a fuel tank (not shown).
Is attached. Since the heating burner 17 is conventionally known, its description is omitted.

As shown in FIG. 1, a pair of temperature raising burners 17 are arranged at opposing positions.

An exhaust cylinder 6 communicating with the secondary combustion chamber 3 is provided at an upper end of the combustion cylinder 4.

The exhaust pipe 6 is provided with a rib 18 having a predetermined width on the inner edge of the discharge port 5 at the upper end.

The combustion tube 4 and the exhaust tube 6 are connected by bolts 21 and nuts 22 via respective flanges 19 and 20, and a mesh member 24 is provided at the connection portion 23.

The mesh member 24 is formed of stainless steel. As shown in FIG. 3, a plurality of ring members 25 having the same diameter as the combustion cylinder 4 and the flanges 19 and 20 of the exhaust cylinder 6 are provided at a suitable interval a. The vertical bar 26 and the horizontal bar 27 are overlapped and fixed by welding or the like to form a plurality of meshes 28.

Reference numeral 29 denotes a bolt hole.

On the closed end side of the combustion furnace 2, a float type level holding water tank 30 is mounted slightly above the water cooling jacket 7. The water tank 30 communicates with the lower end of the water cooling jacket 7 via a supply pipe 31.

The float type level holding water tank 30 is provided with an automatic water supply valve (not shown) so as to keep the level of the cooling water in the water cooling jacket 7 constant by always keeping the water level in the tank 30 constant. ing.

The water cooling jacket 7 on the closed end side of the combustion furnace 2 is provided with an on-off valve 32 for taking out hot water. Further, a water cooling jacket 7 is provided on the upper part of the combustion furnace body 2.
And a steam discharge tube 33 for discharging steam generated in the water cooling jacket 7 through a hot water tank 34.

Next, the operation of the above embodiment will be described.

First, the float type level holding water tank 30
And the level of the cooling water in the water cooling jacket 7 is kept constant. Next, a pair of heating burners 17
Turn ON.

Then, the inlet closing door 10 is opened, and incineration materials such as garbage are thrown into the stottle 15 of the primary combustion chamber 1.
The incineration material is ignited by the ignited oil cloth or the like. After igniting the incinerated material, the inlet closing door 10 is closed again, and the opening of the combustion air supply adjusting port 16 is adjusted.

When the ignition is completed in this manner, the incineration material such as garbage in the primary combustion chamber 1 is removed from the combustion air supply control port 16.
Primary combustion and gasification by appropriate amount of air absorbed from This combustion gas flows to the secondary combustion chamber 3 of the combustion cylinder 4.

The combustion gas flowing through the secondary combustion chamber 3 is heated to a high temperature (800 to 1000 °) by the flame of the heating burner 17.
The air is heated to a temperature higher than the flash point by the air, and the oxygen burns in the air supplied from the temperature-raising burner 17 to perform secondary combustion.

The secondary combustion in the secondary combustion chamber 3 completely converts the carbon dioxide into carbon dioxide, and also completely oxidizes soot generated by incomplete combustion, and also removes chemical components causing odor. It becomes odorless by being oxidized or decomposed in a high temperature atmosphere. Therefore, the exhaust gas discharged from the exhaust port 5 of the exhaust pipe 6 is odorless and smokeless.

The combustion gas generated by the primary combustion in the primary combustion chamber 1 is secondary-combusted in the secondary combustion chamber 3 at a high temperature of 800 to 1000 °, so that the amount of dioxin generated is extremely small.

The measurement results of the exhaust gas at the time of incineration of mixed garbage in the incinerator according to this embodiment are as follows.

Measurement conditions: Incineration amount 30 kg / H × 5H Incineration: Wood waste 19.5 kg (65%) Cardboard 6 kg (20%) Plastic 3 kg (10%) Other garbage 1.5 kg (5%) Dioxin concentration: 0.23 ng / m ³ N

Further, in order to increase the incineration efficiency, the medium and the sparks generated when the mixed garbage being incinerated is stirred by a scraper or the like are supplied to a mesh provided at the connecting portion 23 between the incineration cylinder 4 and the exhaust cylinder 6. The member 24 prevents upward discharge.

Therefore, the medium and sparks are not discharged from the exhaust pipe 6 into the atmosphere, and the pollution of the surrounding atmosphere can be prevented.

[0037]

As is apparent from the above description, according to the incinerator of the present invention, trash such as paper waste, wood waste and waste, and a small amount of rubber waste, plastics, kitchen waste and the like are mixed with these waste. The mixed garbage is made into a combustion gas by primary combustion, and this combustion gas can be incinerated in a smokeless, odorless, pollution-free state by secondary combustion of high-temperature combustion, and the emission of dioxin generated during incineration can be suppressed. .

Further, even when the mixed garbage being incinerated is stirred with a scraper or the like, discharge of the medium and sparks into the atmosphere can be prevented.

[Brief description of the drawings]

FIG. 1 is a side sectional view of an incinerator according to one embodiment of the present invention.

FIG. 2 is a front view of the incinerator according to one embodiment of the present invention.

FIG. 3 is a plan view of a mesh member according to one embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 ... Primary combustion chamber 2 ... Combustion furnace body 3 ... Secondary combustion chamber 4 ... Exhaust port 5 ... Exhaust cylinder 7 ... Double steel plate water-cooled jacket 8 ... Incineration material inlet 9 ... Incineration ash outlet 10 ... Door for sealing 12: Door for closing the outlet 15: Combustion air supply adjusting port 16: Rostor 17: Burner for heating 24: Mesh member 9

Claims (1)

[Claims] An incinerator body that forms a primary combustion chamber is provided with a roast at the bottom thereof, and an incineration material inlet and an incineration ash outlet are provided at one end of the incinerator body. A closing door is provided at each of the incineration ash discharge ports so as to be openable and closable, and a combustion air supply control port is provided at the sealing door at the incineration ash discharge port. A combustion cylinder that forms a secondary combustion chamber in communication with the exhaust cylinder that communicates with the combustion cylinder, and the combustion cylinder communicates with the secondary combustion chamber to increase the temperature of combustion gas and supply air. An incinerator, wherein a temperature-raising burner is provided to face and a mesh member is provided at a connection portion between the combustion tube and the exhaust tube.