JPH08100914A - Incinerating furnace - Google Patents

Abstract

PURPOSE: To improve the burning efficiency, to expedite the gasification, to reduce odor and to decrease smoke soots by providing a charge inlet unit for receiving waste at one end of an incinerating furnace body and a cyclone type secondary incinerator at the other end. CONSTITUTION: An incinerating furnace comprises an incinerating furnace body 12 on a frame 10, a charging inlet unit 14 formed to receive waste to be incinerated and to feed it to the body 12, and a cyclone type secondary incinerator 16 connected to the other end of the body 12. Refuse fed from a solid-liquid separator 50 to the inlet 30 of the unit 14 is fed by a screw conveyor 28 to the body 12, the fed refuse is fed longitudinally while being burned, and the incinerated ash is externally discharged by an ash delivery conveyor 34 from an incinerated material discharge end 24. Unburned gas or incompletely burned gas is fed to a cyclone type secondary incinerating furnace 38 via a connecting tube 36, and completely burned.

Description

Detailed Description of the Invention

[0001]

This invention relates to improvements in incinerators.

[0002]

2. Description of the Related Art Conventionally, various incinerators are known and are actually used. For example, JP-A-64-5
No. 7018 describes a rotary incinerator. A cyclone incinerator is also known. See, for example, Japanese Patent Application Laid-Open No. 5-322146 of the present applicant.

Further, there is also known a separation device for separating the waste to be incinerated into a solid content and a liquid content. See, for example, JP-A-1-281318.

[0004]

Although the above-mentioned various apparatuses have achieved their purposes to some extent, there is a demand for an incinerator capable of further efficiently incinerating.

[0005]

DISCLOSURE OF THE INVENTION The present invention is to solve the above-mentioned problems, and it is provided in an incinerator main body installed on a frame and adjacent to one end of the incinerator main body, and is intended to be incinerated. To provide an incinerator characterized by including an input port device adapted to receive and send the waste to the incinerator body and a cyclone type secondary incinerator connected to the opposite end of the incinerator body. .

Further, there is provided an incinerator including a combustion auxiliary device inside the incinerator main body, which increases combustion efficiency by radiant heat and also functions as an air outlet.

The present invention further provides an incinerator including a solid-liquid separation device connected to the input port of the incinerator body.

[0008]

DESCRIPTION OF PREFERRED EMBODIMENTS Hereinafter, the incinerator according to the present invention will be described with reference to embodiments.

Referring to FIG. 1, an embodiment of an incinerator according to the present invention includes an incinerator body 12 installed on a frame 10,
An inlet device 14 provided adjacent to one end of the incinerator body 12 for receiving the waste to be incinerated and sending it to the incinerator body, and a cyclone connected to the opposite end of the incinerator body. The secondary incineration device 16 is included.

The incinerator body 12 may be of any type as long as it can transfer dust while incinerating it in the longitudinal direction. In this embodiment, Japanese Patent Laid-Open No. 64-57018 is used.
The rotary incinerator described in No. 1 is used. Briefly speaking, the rotary incinerator 20 is installed on the roller table 18 arranged on the frame 10, and the incineration receiving end 22 and the incinerator are incinerated. Rotary incinerator 20 with material discharge end 24
And a burner device 26 provided at the incineration material discharge end 24 of the rotary incinerator 20.

The rotary incinerator 20 has a cylindrical shape, not a conical tube shape. This is because when dust is thrown into the furnace and incinerated, the portion closer to the charging port becomes thicker inside, and the inside naturally becomes a conical cylindrical shape.

The incineration receiving end 22 of the incinerator body 12
The input port device 14 connected to the input screw conveyor 28 feeds the incineration object to the incineration object receiving end 22.
And a charging port 30 connected to the charging screw conveyor 28.

The roller base 18 is connected to a drive unit 32, and the rotary incinerator 20 is rotated by the drive unit 32, and dust and the like are incinerated by the flame from the burner 26.
Although not shown in the drawing, a stirring and transfer blade is provided on the inner surface of the rotary incinerator 20 to transfer ash and the like toward the incinerated material discharge end 24.

FIG. 2 shows the internal structure of the furnace 12. As shown here, a far-infrared ray generator 70 is provided inside the incinerator body 12 in order to further increase the combustion efficiency.
The far-infrared ray generator 70 is made of a material that emits far-infrared rays and may have various shapes.

As shown in FIG. 3, an air blower 74 is provided inside the far infrared ray generator 70. The air supply pipe 74 includes a main pipe 75 extending to the center inside the far-infrared ray generator 70, and a branch member 76 branched from the main pipe 75 to serve as an air outlet 72 and open into the furnace.

The branch officer 76 is thinner than the main pipe 75, and the inside of the branch officer 76 is tapered so that the air outlet 72 is thinnest. This structure allows
As will be described later, when the oxygen-supplemented smoke is sent into the furnace from the air outlet 72, the smoke quickly reaches the furnace. Further, as shown in FIGS. 2 and 3, the air outlet 72 of the far-infrared ray generator 70 is opened only in the lower half of the far-infrared ray generator 70. This is because the garbage usually accumulates in the lower part of the furnace, and it is necessary to increase the combustion rate of the lower part in the furnace.

As shown in FIG. 2, a smoke recovery hood 82 for collecting smoke generated by burning dust is provided outside the incinerator body 12. The smoke collected in the smoke collection hood 82 communicates with an oxygen enrichment device (PSA) 86 via a smoke passage 84, and the smoke supplemented with oxygen by the oxygen enrichment device 86 is converted into far infrared rays by a fan 76. From the air outlet 72 of the generator 70, it is sent into the inside of the incinerator body 12.

The oxygen-supplemented smoke sent into the furnace functions as an aid to combustion in the furnace. At this time, according to the method of sending a large amount of normal air, there is a risk that the internal pressure rises, the flame flows backward, and the worker is exposed to the flame. Further, the residual oxygen contained in the smoke after combustion is about 12%, and even if it is sent into the furnace as it is, combustion in the furnace cannot be assisted. Therefore, PS using the denitrification method
Smoke with oxygen supplementation of 8% or more in A is sent into the furnace. As a result, oxygen can be replenished while maintaining the negative pressure in the furnace, and the combustion efficiency can be safely increased.

The method of injecting oxygen of PSA into the furnace can also be used for controlling the temperature rise in the ceramic firing furnace.

The inner wall of the incinerator body 12 is usually lined with refractory, but in the embodiment, it is struck with metal. That is, the incinerator body 12 itself has a three-layer structure of a metal, a step heating material and a metal. Moreover, the inner metal and the outer metal are not connected in order to prevent heat conduction between the two metals.

As shown in FIGS. 1 and 2, an incineration conveyor 34 is also provided at the incineration material discharge end 24 of the rotary incinerator 20.

The incineration discharge end 24 of the rotary incinerator 20 is connected to the cyclone type secondary incinerator 16 through a connecting pipe 36, and the cyclone type secondary incinerator 16 fails to burn in the rotary incinerator 20. It includes a cyclone-type secondary incinerator 38 adapted to receive a floating portion such as dust and the like and completely burn it. Further, the connecting pipe 36 is provided with a blower 37 for blowing air, and external air is sent into the connecting pipe 36. As a result, the inside of the incinerator body 20 has a negative pressure, and the combustion efficiency of the cyclone type secondary incinerator 16 is increased. The cyclone-type secondary incinerator 16 may be, for example, the one described in JP-A-5-322146 of the present applicant.

An ash discharge valve 40 is provided at the bottom of the cyclone type secondary incineration chamber 38.

The cyclone-type secondary incineration chamber 38 is provided with an auxiliary burner (not shown), and is connected to the chimney 44 through the cyclone 42.

Above the charging port device 14, there is provided a solid-liquid separation device 50 for separating the waste to be incinerated into a solid content and a liquid content.

The solid-liquid separation device 50 has a hopper 52 located at the top and a crushing device 54 provided at the bottom of the hopper.
An upright tube 56 connected to the bottom of the opening of the hopper, and first and second chambers 58 and 6 extending in the longitudinal direction inside the upright tube.
0, the top opening of the second chamber 60 is located directly below the crushing device, and the first and second chambers 58,
A longitudinal partition wall 62 that exposes the bottom opening of 60 to the input port device, and diagonally from the top of this partition wall 62 to the bottom end of the hopper across the top opening of the second chamber 60 directly below the crushing device. An extending bar screen 64 and a valve device 6 for opening and closing the bottom openings of the first and second chambers, respectively.
6 and 68 are included.

In operation, dust (eg, garbage) to be incinerated is put into the hopper 5 of the solid-liquid separation device 50.
When it is charged into the second chamber 6, it is finely crushed by the crushing device 54, and the liquid component passes through the bar screen 64 and the second chamber 6
It falls to 0. The solid content slides on the bar screen 64 and falls into the first chamber 58. The amounts of these liquid and solid components can be controlled by opening and closing valve devices 66 and 68 provided at the bottoms of the chambers 58 and 60, respectively.

The dust that has entered the input port 30 of the input port device 14 from the solid-liquid separation device 50 is transferred to the input screw conveyor 28.
Is sent to the incinerator body 12. The sent dust moves in the longitudinal direction while burning, and the incineration ash is discharged from the incineration material discharge end 24 of the incinerator body 12 to the outside by the ash discharging conveyor 34.

The unburned gas or the incompletely burned gas is sent to the cyclone type secondary incineration chamber 38 through the connecting pipe 36, and is completely burned there.

A scraping blade 90 is provided near the inner entrance of the incinerator body 12 to scrape off fumigated ash sticking to the inner wall near the entrance. The scraping blade 90 is composed of four blades, and holes having different inner diameters are formed so that each blade becomes smaller in order. The scraping blade 90 rotates in the direction opposite to the rotation of the furnace to achieve the scraping effect and also functions as a sieve.

[0031]

According to the present invention, by adding a cyclone type secondary incinerator to an ordinary incinerator, combustion efficiency is improved, gasification is promoted, odor is reduced, and soot is also reduced. To do. Furthermore, by separating the non-combustible matter into solid and liquid components with a solid-liquid separation device before putting it into the incinerator body, the waste to be mixed and combusted is made uniform and the load fluctuation is suppressed to further increase the incinerator. It is possible to improve the combustion efficiency in the main body.

The far-infrared ray generator 70 provided in the incinerator body 12 produces radiant heat, and the smoke produced by combustion is supplemented with oxygen by PSA to return to the inside of the furnace. Can be further increased. By lining the metal in the furnace, the combustion efficiency is further enhanced.

[Brief description of drawings]

1 is a schematic layout of an incinerator according to the present invention.

FIG. 2 is a partial cross-sectional view of a schematic layout of an incinerator according to the present invention.

FIG. 3 is a sectional view of a far infrared ray generator according to the present invention.

FIG. 4 is a perspective view of a scraping blade according to the present invention.

[Explanation of symbols]

 10 ... Frame 12 ... Incinerator main body 14 ... Input device 16 ... Cyclone type secondary incinerator 18 ... Roll stand 20 ... Rotating incinerator 26 ... Burner 28 ... Input screw conveyor 30 ... Input port 32 ... Drive device 34 ... Ash removal conveyor 37 ... Air blower 38 ... Cyclone type secondary incinerator 40 ... Ash removal valve 42 ... Cyclone 44 ... Chimney 50 ... Solid-liquid separation device 52 ... Hopper 54 ... Crushing device 56 ... Upright pipe 58 ... First chamber 60 ... Second chamber 62 ... Partition Wall 64 ... Bar screen 66 ... Valve device 68 ... Valve device 70 ... Far infrared ray generator 72 ... Air outlet 74 ... Air air pipe

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁶ Identification code Internal reference number FI Technical display location F23G 5/32 ZAB 5/44 ZAB C F23L 7/00 ZAB B F23M 3/12 ZAB

Claims (5)

[Claims] 1. An incinerator main body installed on a frame, and an inlet device provided adjacent to one end of the incinerator main body for receiving waste to be incinerated and sending it to the incinerator main body. And a cyclone-type secondary incinerator connected to the other end of the incinerator body. 2. The incinerator according to claim 1, further comprising a solid-liquid separation device that is connected to the input port device and separates a waste to be incinerated into a solid content and a liquid content. A characteristic incinerator. 3. The incinerator according to claim 2, wherein the solid-liquid separator is a hopper located at the top of the solid-liquid separator, a crushing device provided at the bottom of the hopper, and an opening bottom of the hopper. And an upright pipe connected to the first upright pipe, and the inside of the upright pipe is divided into first and second chambers extending in the longitudinal direction, and the top opening of the second chamber is located immediately below the crushing device, and the first and second A longitudinal partition wall that exposes the bottom opening of the second chamber to the input port device, and diagonally from the top of the partition wall to the bottom end of the hopper across the top opening of the second chamber just below the shredding device. An incinerator comprising an extending bar screen and a valve device for opening and closing bottom openings of the first and second chambers. 4. The incinerator according to claim 1, wherein:
A combustion auxiliary device is provided inside the incinerator body, the combustion auxiliary device is configured by a far-infrared ray generator extending inside the incinerator body, and the far-infrared ray generator has air inside thereof. An incinerator having an air supply pipe, wherein smoke produced by incineration is supplemented with oxygen by PSA and can flow out into the inside of the incinerator body through the air supply pipe. 5. A method for controlling a firing temperature increase in a ceramics firing furnace, wherein smoke produced by the firing is supplemented with oxygen by PSA so that the smoke can flow out into the firing furnace main body through the air supply pipe. The firing furnace used.