JPH1073253A - Flame supply device and flame supply method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To safely, rapidly, and reliably feed flame for ignition by providing a pilot flame generating device to generate a pilot flame and a fuel feed device to generate a flame by feeding flash fuel to a pilot flame to generate a flame. SOLUTION: A pilot flame generating device 25 is provided with a horizontal rod-form pilot burner 29 and movable forward and backward in the direction of a shaft plug by a drive device 31. A pilot burner 29 is provided at the tip part of the combustion chamber 6 side with a pilot flame generating member 37 and in the vicinity thereof with a pilot flame generating sensor 38. An ignition transformer 43 is connected to the pilot burner 29 and a mixture of pilot flame generating fuel fed to the pilot flame generating member 37 and air for generating a pilot flame is automatically ignited by an electric spark type ignition plug. A fuel feed device 28 has a fuel injection nozzle 44 through which kerosene 26 is discharged in a combustion chamber 6 and which is inserted through an air feed hole 18 of a furnace body 7 from the outside. The fuel injection nozzle 44 feeds the kerosene 26 toward the pilot flame 24 and flame 27 is emitted to below from the pilot flame 24 toward the bottom of the combustion chamber 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a flame supply device and a flame supply method. INDUSTRIAL APPLICABILITY The present invention is suitable, for example, as an apparatus and a method for igniting an incineration object, used in an incinerator for incinerating general waste, industrial waste, and the like.

[0002]

2. Description of the Related Art In an incinerator as described above, conventionally, a ignited combustible in a combustion chamber is thrown into an incineration chamber through an incinerator input port. Was.
There is also a method in which a combustion auxiliary material such as kerosene is scattered on the incineration material, and then the combustion auxiliary material is lit manually.

[0003]

However, the above-mentioned conventional method involves problems such as the danger of ignition work and the difficulty of quick and reliable ignition.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a flame supply device and a flame supply method capable of supplying a flame for ignition safely, quickly and reliably.

[0005]

In order to solve the above-mentioned problems, a flame supply device according to the present invention includes a fire-generating device for generating a fire and a fuel supply device for supplying a flammable fuel to the fire to generate a flame. And a configuration comprising:

Although the supply direction of the flammable fuel is not limited, for example, it is preferable that the flammable fuel is supplied from above to the fire and the flame is emitted downward from the fire.

It is more preferable that the fire generating member of the fire generating apparatus is movable.

Specifically, for example, the fire generating member of the fire generating device is configured to be movable between a state of entering the combustion chamber and a state of retreating from the combustion chamber.

More specifically, for example, the fire generating member of the fire generating apparatus is inserted into a hole for communicating the inside and the outside of a furnace body having the combustion chamber therein so as to be movable forward and backward. .

It is preferable that the combustion air supply hole provided in advance in the furnace body is used, and the fuel injection nozzle of the fuel supply device is inserted into the combustion air supply hole.

Further, the flame supply method according to the present invention includes a step of causing a fire generating device capable of moving forward and backward with respect to the incinerated material to advance toward the incinerated material, and a process of generating a fire by the fire generating device. Supplying a flammable fuel to the fire and emitting a flame toward the incineration material.

In the above method, it is preferable that the supply of the flammable fuel is stopped after the incinerated material starts burning, and the fire generating member of the fire generating device is retracted from the incinerated material.

Further, it is more preferable that a step of supplying a combustion auxiliary material to the incinerated material is added before the flame is emitted toward the incinerated material.

[0014]

An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 shows an example of a combustion apparatus provided with a flame supply device according to one embodiment of the present invention. The combustion device 1 includes an incinerator 2, a cyclone unit 4 for dust collection communicating with the incinerator 2 via a flue 3, and a chimney 5 as an exhaust gas outlet communicating with the cyclone unit 4. ing.

The incinerator 2 includes a furnace body 7 having a combustion chamber 6 therein. The lining of the combustion chamber 6 is
For example, it is manufactured using a heat-resistant castable whose main component is alumina ceramic or the like.

The furnace body 7 is provided with an incineration material charging port 8 at an upper portion thereof, and the charging port 8 can be opened and closed by a charging port opening / closing device 9. In the illustrated example, the inlet opening / closing device 9 includes a slide lid 10 as an inlet opening / closing lid member, and a forward / reverse rotatable electric motor 11 as a drive source for opening / closing the slide lid 10. Wheels 13 rolling on a pair of left and right rails 12 laid on the upper part of the furnace body 7 in the front-rear direction are provided at four corners of the slide lid 10.
Are provided respectively. When the wheels 13 are driven by the electric motor 11 and roll on the rails 12, the slide lid 10 moves horizontally on the furnace main body 7 in the front-rear direction to move the loading port 8. Automatically open and close.

The slide lid 10 is provided with a vent 14 whose opening is adjustable for introducing outside air.

The incinerator 2 has an air supply device 15 for supplying combustion air into the combustion chamber 6.
The air supply device 15 includes an appropriate number of air passages 16 disposed so as to surround the outer peripheral surface of the furnace main body 7, and a combustion air supply blower 17 that allows the combustion air to flow through the air passages 16. It has. In the furnace main body 7, an air supply hole 18 for making the air passage 16 and the combustion chamber 6 communicate with each other is formed at an appropriate place. The combustion air is forced to flow through the air passage 16 by the operation of the blower 17, and is supplied into the combustion chamber 6 through the air supply hole 18.

In the chimney 5, an ejector blower 19 is provided.
The air outlet 20 of the air blown from the air outlet communicates with the outlet 5 a of the chimney 5. The ejector blower 19 promotes discharge of exhaust gas by blowing air upward from the air outlet 20 toward the outlet 5a of the chimney 5.

The cyclone section 4 is provided with an afterburner 21 for reliably performing secondary combustion. The afterburner 21 is operated as required when the amount of the incinerated material 22 in the combustion chamber 6 is large, or when inflammable materials are particularly incinerated.

In the combustion device 1 configured as described above, the flame supply device 23 according to one embodiment of the present invention is a device for automatically igniting the object 22 to be burned. It is arranged at the upper end of the combustion chamber 6 in the vicinity.

As shown in FIGS. 2 and 3, the flame supply device 23 includes a fire-generating device 25 for generating a fire 24.
And a fuel supply device 28 that supplies kerosene 26 as an example of flammable fuel to the fire 24 to generate a flame 27.

The ignition device 25 has a horizontal rod-shaped pilot burner 29. The pilot burner 29 is inserted from the outside of the furnace main body 7 into a pilot burner insertion hole 30 formed in the upper part of the furnace wall on the flue 3 side so as to communicate the inside and outside of the combustion chamber 6. ,
A suitable driving device 31 is capable of moving back and forth in the axial direction.

If the air supply holes 18 provided beforehand in the furnace body 7 are used as the pilot burner insertion holes 30, the pilot burners 29
Mounting work is easy.

In the illustrated example, the driving device 31 includes an electric motor 32 rotatable in forward and reverse directions, a pinion 33 drivingly connected to the electric motor 32, and the pilot burner 29.
And a rack 34 that is drivingly connected to the pinion 33 and meshes with the pinion 33. A connecting member 36 having an elongated hole 35 for adjusting a mounting position is interposed between the rack 34 and the pilot burner 29, and the mounting position of the pilot burner 29 with respect to the connecting member 36 can be freely adjusted. I can do it.

As the driving device 31, for example, an electric linear actuator can be used.

The pilot burner 29 is provided with a fire generating member (nozzle) 37 at a tip end on the combustion chamber 6 side. When the drive device 31 operates, the fire generating member 37 moves between a state of entering the combustion chamber 6 and a state of retreating from the combustion chamber 6. The pilot burner 2
9 also includes a suitable fire sensor 38 near the fire generating member 37 for detecting the occurrence of the fire 24 in the fire generating member 37.

The pilot burner 29 has a fuel line 39 for supplying a fire generating fuel such as LPG gas to the fire generating member 37 and a fire source for supplying a fire generating air to the fire generating member 37. The generating air lines 40 communicate with each other. In the middle of each of the conduits 39, 40, there is provided an electromagnetic valve 41, 4 for opening and closing the respective conduit 39, 40.
2 are provided.

An ignition transformer 43 is also connected to the pilot burner 29, and
Is automatically ignited by a not-shown electric spark type spark plug into the mixture of the fuel for generating sparks and the air for generating sparks.

On the other hand, the fuel supply device 28 has a fuel injection nozzle 44 for discharging the kerosene 26 into the combustion chamber 6. The fuel injection nozzle 44 is provided on the outer side of the furnace main body 7 by using the air supply holes 18 provided in advance in the furnace main body 7 from the viewpoint of easy and economical attachment to the furnace main body 7. Has been inserted from.

As shown in FIG. 2, the fuel injection nozzle 44 extends in a direction intersecting the direction of the pilot burner 29, and the direction of the pilot burner 29 in FIG. The fuel injection nozzle 44 is located at a position higher than the fire generating member 37 of the pilot burner 29 as shown in the piping diagram of FIG. The fuel injection nozzle 44 supplies the kerosene 26 from above toward the fire 24 generated in the fire generating member 37, and the flame 27 downward from the fire 24 toward the bottom of the combustion chamber 6. Are arranged to emit.

The fuel injection nozzle 44 has a kerosene supply pipe 4 for supplying the kerosene 26 as an example of flammable fuel.
5 and a kerosene discharge air pipe 46 for supplying kerosene discharge air for discharging the kerosene 26 into the combustion chamber 6 at an appropriate pressure. Each pipe 4
Electromagnetic valves 47 and 48 for opening and closing the respective conduits 45 and 46 are provided in the middle of the pipes 5 and 46.

It is preferable that the fuel injection nozzle 44 can be moved forward and backward in the combustion chamber 6 as required, similarly to the pilot burner 29.

The flame supply device 23 configured as described above is
Use as follows.

The refuse 22 as the object to be burned is discharged from the incineration object inlet 8 of the furnace body 7 to the fire generating member 3.
7, the slide lid 10 is closed, and a kerosene radiation switch (not shown) on the outside of the furnace body 7 is pressed. The fuel supply device 28 is operated, and only for a predetermined timer set time, The kerosene 26 for facilitating full-scale ignition is injected from the fuel injection nozzle 44 onto the refuse 22 in the combustion chamber 6. The injected kerosene 26 acts as a combustion aid. At this time, if the control circuit of the fuel supply device 28 and the control circuit of the slide lid 10 are linked with each other so that the fuel supply device 28 does not operate when the slide lid 10 is open, safety is ensured. It is.

Next, when an automatic ignition switch (not shown) on the outside of the furnace main body 7 is pressed, the driving device 31 is operated, and the pilot device is operated until the fire generating member 37 projects into the combustion chamber 6. The pilot burner 29 advances through the burner insertion hole 30 (see the position of the pilot burner 29 shown by a solid line in FIG. 3). Thereafter, the electromagnetic valve 41 of the fuel line 39 for fire generation and the electromagnetic valve 42 of the air line 40 for fire generation are simultaneously opened, and the high temperature current from the ignition transformer 43 ignites the fire generation member 37. .

The fire type 24 in the fire type generating member 37
Is detected by the fire sensor 38, the fuel supply device 28 is operated again, and the fuel injection nozzle 44
, The kerosene 26 is radiated in full scale. The radiated kerosene 26 becomes the flame 27 via the position of the fire 24 generated by the fire generating member 37 and falls on the refuse 22 in the combustion chamber 6. Thus, the refuse 22 is automatically and reliably lit.

When the refuse 22 begins to burn sufficiently, the operation of the fuel supply device 28 is stopped to stop the emission of the kerosene 26, and the fire generating member 37 is extinguished. The pilot burner 29 is retracted until it is hidden in the hole 30 (see the position of the pilot burner 29 shown by a virtual line in FIG. 3).

According to the flame supply device 23 according to the present embodiment constructed and operated as described above, the refuse 22 in the combustion chamber 6 can be ignited safely, quickly and easily. In addition, even when the refuse 22 is difficult to burn, ignition can be reliably performed.

The flame supply device 23 can be installed in the combustion device 1 in advance as an automatic ignition device, or can be retrofitted to an existing combustion device as needed. At this time, if the installation is performed by using the air supply holes 18 provided in advance in the furnace main body 7, the installation work is easy.

[Brief description of the drawings]

FIG. 1 is a partially cutaway overall schematic perspective view showing an example of a combustion device provided with a flame supply device according to an embodiment of the present invention.

FIG. 2 is a perspective view showing a main part of the flame supply device in FIG. 1;

FIG. 3 is a piping diagram of the flame supply device when the pilot burner of FIG. 2 is rotated 90 degrees on a horizontal plane and viewed from the side.

[Explanation of symbols]

 Reference Signs List 6 Combustion chamber 7 Furnace main body 18 Combustion air supply hole 22 Incineration target 24 Fire class 25 Fire class generator 26 Ignition fuel, combustion auxiliary material 27 Flame 28 Fuel supply device 30 Hole (pilot burner insertion hole) 37 Fire class generating member (nozzle) 44 Fuel injection nozzle

Claims (9)

[Claims] 1. A fire generating device (25) for generating a fire (24), and a fuel supply (28) for supplying a flammable fuel (26) to the fire (24) to generate a flame (27).
And a flame supply device comprising: 2. A igniter (25) for producing an igniter (24), and a flammable fuel (2) directed toward the igniter (24).
6) a fuel supply device (28) that supplies the fuel from above and emits a flame (27) downward from the fire type (24). 3. The flame supply device according to claim 1, wherein the fire generating member (37) of the fire generating device (25) is movable. 4. The fire generating member (37) of the fire generating device (25) is movable between a state of entering the combustion chamber (6) and a state of retreating from the combustion chamber (6). Item 3. The flame supply device according to Item 1 or 2. 5. The fire generating member (37) of the fire generating device (25) moves back and forth to a hole (30) for communicating the inside and the outside of a furnace body (7) having the combustion chamber (6) therein. The flame supply device according to claim 4, wherein the flame supply device is freely inserted. 6. The fuel injection nozzle (44) of the fuel supply device (28) is inserted into a combustion air supply hole (18) provided in the furnace body (7) in advance. A flame supply device as described. 7. A process in which a fire generating device (25) movable forward and backward with respect to the object to be incinerated (22) is advanced toward the object to be incinerated (22); ) And a step of supplying a flammable fuel (26) to the igniter (24) and emitting a flame (27) toward the incineration object (22). 8. After the incinerated material (22) starts burning, the supply of the flammable fuel (26) is stopped,
The fire generating member (37) of the fire generating device (25)
8. Retreating from the incinerated material (22) side.
The method for supplying a flame according to the above. 9. The incinerator (22) is supplied with a combustion aid (26) before the flame (27) is emitted toward the incinerator (22). Flame supply method.