JP6347692B2 - Burner device for cremation furnace or incinerator - Google Patents

Description

  The present invention relates generally to cremation furnaces or incinerator burner devices. More specifically, the present invention relates to a cremation furnace or an incinerator burner apparatus that can shorten the incineration time.

  The cremation furnace is generally configured to supply fuel to a burner device attached to a combustion chamber in the cremation furnace and burn it, thereby burning the body. In the burner device, a nozzle for spraying fuel is installed, and two nozzles are often juxtaposed.

  On the other hand, a two-fluid spray nozzle is known in which a liquid is mixed with a gas and sprayed into a fine mist. The two-fluid spray nozzle has a finer particle diameter than the one-fluid nozzle. It has various features such as spraying. The inventor has proposed a two-fluid spray nozzle that can be completely burned without generating unburned particles (see Patent Document 1).

Japanese Patent No. 4730924

  However, in the conventional cremation furnace burner apparatus, since the dead body has a non-combustible part, it took a considerable time to incinerate the dead body. In addition, even if a fine mist is obtained using a two-fluid spray nozzle, the oxygen necessary for combustion is still insufficient, so a flame cannot be formed in the entire particle, and oxygen shortage is improved. Even if the supply of oxygen is increased as much as possible, there is a disadvantage that the temperature of the fog is lowered and combustion does not continue, and a large amount of unburned particles are generated and combustion does not continue. Further, when two nozzles are used in parallel, there is a disadvantage that oxygen is insufficient at the Z position in FIG. 6 and incomplete combustion occurs. On the other hand, the incinerator burner apparatus has the same disadvantages.

  In view of the situation as described above, the present invention is an improvement and development of the above-described two-fluid spray nozzle for a cremation furnace, and a cremation furnace or incinerator burner apparatus that can shorten the incineration time. It is intended to provide.

A burner apparatus for a cremation furnace or an incinerator according to claim 1 of the present application has a liquid jet part provided at a tip arranged on a central axis and a gas jet part arranged around the liquid jet part. Two two-fluid spray nozzles juxtaposed, a cap disposed on the central axis on the side of the injection port, and formed in a cylindrical shape by a peripheral wall, and the two-fluid spray nozzle of the cap And a frame holder disposed on a central axis at a predetermined interval on the side opposite to the side where the two-fluid spray nozzle is located. The cap is provided with an opening in the center on the side opposite to the side where the two-fluid spray nozzle is located. And a partition wall formed so as to form a conical shape or a polygonal pyramid shape whose diameter gradually increases as the distance from the two-fluid spray nozzle increases, and one or a plurality of air inlets are provided on the peripheral wall of the cap. Is Cage, the frame holder, an opening provided in the center, oil mist and the air ejected from the opening of the cap of the plurality that is shaped into a shape such as blown pivot clockwise or counter-clockwise hole and is provided, in which oil mist and air injected from the opening of the cap, characterized in that it is configured to blow to pivot clockwise or counterclockwise from the hole.

The cremation furnace or incinerator burner device according to claim 2 of the present invention has a liquid ejection part provided with an ejection port at the tip disposed on the central axis, and a gas ejection part disposed around the liquid ejection part. A two-fluid spray nozzle, a cap disposed on the central axis on the side of the injection port and formed in a cylindrical shape by a peripheral wall; and a side of the cap opposite to the side where the two-fluid spray nozzle is located A frame holder disposed on a central axis at a predetermined interval, and the cap is provided with an opening in the center on the side opposite to the side where the two-fluid spray nozzle is located, and from the two-fluid spray nozzle A partition wall is formed so as to have a conical shape or a polygonal pyramid shape whose diameter gradually increases as the distance increases, and one or more air inlets are provided on the peripheral wall of the cap. The Muhoruda, provided with an opening provided in the center, a plurality of holes oil fog and air injected is shaped into a shape such as blown pivoted clockwise or counterclockwise from the opening of the cap The oil mist and the air sprayed from the opening of the cap are configured to rotate and blow out clockwise or counterclockwise from the hole .

  The burner apparatus for a cremation furnace or an incinerator according to claim 3 of the present application is the burner apparatus according to claim 1 or 2, wherein each of the plurality of holes of the frame holder extends from the center of the frame holder. It has a rectangular or arc-shaped front shape that forms an acute angle α with respect to the line, and has a cross-sectional shape that is inclined by an acute angle β in the plate thickness direction of the frame holder.

  With the cremation furnace or incinerator burner device of the present invention, generation of unburned particles can be prevented, the flame temperature can be increased, and the incineration time can be shortened. Moreover, in the cremation furnace burner device of the present invention, since the flame length can be made longer and incinerated to the feet, unburned portions are less likely to be produced, and improvement in workability can be expected.

It is sectional drawing which showed a part of cremation furnace burner apparatus which concerns on preferable embodiment of this invention. FIG. 2 is an exploded cross-sectional view of a two-fluid spray nozzle installed in the cremation furnace burner device of FIG. 1. 3A is a front view taken along line 3a-3a in FIG. 1, FIG. 3B is an enlarged view of a portion 3b in FIG. 3A, and FIG. 3C is FIG. 3B. It is sectional drawing seen along line 3c-3a. It is the figure which showed the hole of the frame holder of various forms. It is a figure of the cremation furnace in which the burner apparatus for cremation furnaces of this invention was installed. It is the figure which showed the combustion state of the two 2 fluid spray nozzles juxtaposed.

  Next, a cremation furnace burner device according to a preferred embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing a part of a cremation furnace burner apparatus according to a preferred embodiment of the present invention. A cremation furnace burner apparatus according to a preferred embodiment of the present invention, generally indicated by reference numeral 10 in FIG. 1, includes two juxtaposed two-fluid spray nozzles 12. The two two-fluid spray nozzles 12 may be the same or different. Here, “parallel” means that they are arranged close to each other with their central axes substantially parallel to each other. FIG. 2 is an exploded cross-sectional view of one of the two-fluid spray nozzles 12 shown in FIG.

  Hereinafter, one two-fluid spray nozzle 12 will be described with reference to FIG. 2, but the same applies to the other two-fluid spray nozzle 12. The two-fluid spray nozzle 12 includes a liquid ejecting section 14 disposed on the central axis XX, and a gas ejecting section 16 disposed around the liquid ejecting section 14.

  The liquid ejecting section 14 is formed in a hollow duct shape as a whole, and is provided with a liquid ejecting opening 14a at one end and a liquid supply opening 14b at the other end. The gas injection unit 16 is formed in a hollow duct shape so as to cover the periphery of the liquid injection unit 14, and the gas injection port 16a is provided at the end on the side where the liquid injection port 14a is provided. Is provided with a gas supply port 16b.

  The liquid supply port 14b of the liquid ejecting unit 14 is connected to a liquid supply source (not shown) via a conduit (not shown). The gas supply port 16b of the gas injection unit 16 is connected to a gas supply source (not shown) via a conduit (not shown). In FIG. 2, one gas supply port 16b is shown, but a plurality of gas supply ports 16b may be provided.

  The cremation furnace burner device 10 also includes a cap 18 disposed on the central axis line XX on the side of the liquid injection port 14a and the gas injection port 16a of the two-fluid spray nozzle 12.

  The cap 18 is formed in a cylindrical shape as a whole by the peripheral wall 18a. The cap 18 is provided with one or more (only one is shown in FIG. 2) secondary air inlets 18b on the peripheral wall 18a, and the secondary air inlet 18b is connected to a conduit (not shown). To a secondary air supply source (not shown). The cap 18 is provided with a partition wall 18c having an opening 18c1 at the center on the side opposite to the side where the two-fluid spray nozzle 12 is located. The partition wall 18c is formed so that the side of the two-fluid spray nozzle 12 is substantially orthogonal to the central axis XX, and the diameter of the partition 18c gradually increases as the side opposite to the two-fluid spray nozzle 12 moves away from the opening 18c1. It is formed so as to form a polygonal pyramid shape. The distance D1 (see FIG. 1) between the tip of the two-fluid spray nozzle 12 and the opening 18c1 of the partition wall 18c is preferably about 2 mm to about 15 mm.

  The cremation furnace burner device 10 further includes a frame holder 20 disposed on the tip end side of the cap 18 at a position extending from the cap 18 to a predetermined distance D2 (see FIG. 1). The frame holder 20 is preferably arranged so that the intermediate line YY (see FIG. 1) of the central axis XX of each of the two-fluid spray nozzles 12 is located at the center C. The interval D2 is preferably about 0 mm to about 10 mm.

  The frame holder 20 is provided with a central opening 20a, and a plurality of holes 20b formed in a shape such that oil mist and air sprayed from the opening 18c1 of the cap 18 are swung clockwise or counterclockwise and blown out. It is formed by the provided board.

  The shape of the hole 20b of the frame holder 20 will be described with reference to FIGS. As shown in FIG. 3A (in FIG. 3A, the outline of the frame holder 20 is omitted in order to clearly show the hole 20b), the hole 20b extends from the center C of the frame holder 20. It has a rectangular front shape that forms an acute angle α with respect to the extending radial lines L1 to L16. The hole 20b also has a cross-sectional shape that is inclined by an acute angle β in the plate thickness direction of the frame holder 20, as shown in FIG. With such a shape of the hole 20b, oil mist and air injected from the opening 18c1 of the cap 18 are swung in one direction from the hole 20b and blown out.

  The number of holes 20b shown in FIG. 3A is 16, but it may be 15 or less, or 17 or more. Further, the hole 20b may have an arc shape instead of a rectangular shape (see FIG. 4A). In addition, instead of inclining the cross-sectional shape of the hole 20b by an acute angle β in the thickness direction, the deflecting plate 20b1 is inclined by an acute angle β on one surface or both surfaces of the plate forming the frame holder 20. May be provided (see FIGS. 4B to 4D). Furthermore, the inclination angle of the hole 20b may be set to −α (see FIG. 4E). In this case, oil mist and air swirl in the other direction and blow out. The shape of the hole 20b shown in FIG. 3 and FIG. 4 is merely an example, and other shapes can be used as long as the oil mist and air can be swung clockwise and counterclockwise and blown out. May be adopted.

  FIG. 5 is a diagram schematically showing a cremation furnace in which the cremation furnace burner device 10 of the present invention is installed. As shown in FIG. 5, two two-fluid spray nozzles 12 juxtaposed at the tip of the air guide tube opened toward the cremation furnace are installed. Then, fuel oil or fuel gas is supplied to the liquid injection unit 14 of the two-fluid spray nozzle 12, spraying air or oxyhydrogen gas is supplied to the gas injection unit 16 of the two-fluid spray nozzle 12, and secondary air is supplied to the cap 18. Alternatively, oxyhydrogen gas is supplied. In FIG. 6, reference numerals 22 and 24 denote a gas burner and a combustion air blower, respectively.

  Next, the operation of the cremation furnace burner apparatus 10 configured as described above will be described. First, fuel oil is supplied from the liquid injection port 14a of the liquid injection unit 14 of the two-fluid spray nozzle 12, and spray air is injected from the gas injection port 16a of the gas injection unit 16 of the two-fluid spray nozzle 12 at high speed. Then, the fuel oil is injected in the form of a fine mist. The air contained in the mist thus ejected (hereinafter referred to as “oil mist”) is about 5 to 10% of the amount necessary to completely burn the mist.

  Since the cap 18 is arranged at the tip of the two-fluid spray nozzle 12, when oil mist is injected, secondary air is sucked into the cap 18 through the secondary air inlet 18b by the ejector effect. The Thereby, since the sucked secondary air is mixed with the oil mist, incomplete combustion of the oil mist is prevented. Note that the opening 18c1 of the cap 18 has such a dimension that the oil mist sprayed from the two-fluid spray nozzle 12 can pass through without any trouble.

  When the oil mist / secondary air injected from the opening 18c1 of the cap 18 passes through the opening 20a and the hole 20b of the frame holder 20 and is swung in a clockwise or counterclockwise direction, it is blown out. There is no oxygen-deficient region as shown by the location, and a flame can be formed on the entire oil particles. Thereby, generation | occurrence | production of unburned particle | grains can be prevented, flame temperature can be raised, and incineration time can be shortened. Moreover, since the flame length can be lengthened and incinerated to the feet, unburned portions are less likely to be produced, and improvement in workability can be expected. In the cremation furnace burner device 10, a flame temperature of 1400 degrees can be obtained by appropriately adjusting the discharge amount of the two two-fluid spray nozzles 12.

  According to experiments conducted by the present inventor, the incineration time in the conventional burner apparatus was 70 minutes to 80 minutes, but the burner apparatus 10 for the cremation furnace provided with the two two-fluid spray nozzles 12 described above. The incineration time at was 50 minutes. Thereby, it turned out that incineration time is shortened to about 60%-70% of the conventional by using for the burner apparatus 10 for cremation furnaces.

  In the above-described embodiment, the two-fluid spray nozzles 12 are described in relation to the embodiment. However, the number of the two-fluid spray nozzles 12 may be one. Although the cremation furnace burner device 10 having one two-fluid spray nozzle 12 tends to have a longer incineration time than the cremation furnace burner device 10 having two two-fluid spray nozzles 12, By providing the frame holder 20 so that the oil mist / air swirls and blows out, the incineration time can be made shorter than that of the conventional burner apparatus.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say, it is something.

  For example, in the above-described embodiment, the description has been made exclusively in relation to the burner apparatus for a cremation furnace, but the burner apparatus of the present invention may be used for an incinerator. Moreover, in the said embodiment, although oil is used as a fuel to be injected, you may use gaseous (gas) fuel. Moreover, in the said embodiment, although the type | mold two-fluid spray nozzle which has the liquid ejection part arrange | positioned on the center axis line and the gas ejection part arrange | positioned around the liquid ejection part is shown, other forms are shown. A two-fluid spray nozzle (for example, a nozzle provided with a plurality of gas ejection slits on the outer periphery of the central liquid ejection section) may be used. Further, the shape and size of the opening 20a of the frame holder and the shape, size, and number of the holes 20b shown in the figure are merely illustrative, and shapes, sizes, and numbers other than those illustrated may be adopted. Good.

DESCRIPTION OF SYMBOLS 10 Burner apparatus for cremation furnaces 12 Two-fluid spray nozzle 14 Liquid injection part 14a Liquid injection port 14b Liquid supply port 16 Gas injection part 16a Gas injection port 16b Gas supply port 18 Cap 18a Circumferential wall 18b Secondary air inflow port 18c Partition wall 18c1 Opening 20 Frame holder 20a Opening 20b Hole 20b1 Baffle plate 22 Gas burner 24 Combustion air blower

Claims (3)

A burner device for a cremation furnace or an incinerator,
A two-fluid spray nozzle arranged side by side, having a liquid jet part provided at the tip arranged on the central axis and a gas jet part arranged around the liquid jet part;
A cap disposed on the central axis on the side of the injection port and formed in a cylindrical shape by a peripheral wall;
A frame holder disposed on a central axis at a predetermined interval on the side of the cap opposite to the side where the two-fluid spray nozzle is located;
The cap has an opening in the center opposite to the side where the two-fluid spray nozzle is located, and has a conical shape or a polygonal pyramid shape whose diameter gradually increases with distance from the two-fluid spray nozzle. A formed partition is provided,
One or more air inlets are provided in the peripheral wall of the cap;
The frame holder has an opening provided in the center, a plurality of holes oil mists and air was formed into a shape such as blown pivot clockwise or counterclockwise ejected from the opening of the cap The oil mist and air sprayed from the opening of the cap is configured to be swung clockwise or counterclockwise from the hole .
A device characterized by that. A burner device for a cremation furnace or an incinerator,
A two-fluid spray nozzle having a liquid ejection part provided with an ejection port at the tip disposed on the central axis and a gas ejection part disposed around the liquid ejection part;
A cap disposed on the central axis on the side of the injection port and formed in a cylindrical shape by a peripheral wall;
A frame holder disposed on a central axis at a predetermined interval on the side of the cap opposite to the side where the two-fluid spray nozzle is located;
The cap has an opening in the center opposite to the side where the two-fluid spray nozzle is located, and has a conical shape or a polygonal pyramid shape whose diameter gradually increases with distance from the two-fluid spray nozzle. A formed partition is provided,
One or more air inlets are provided in the peripheral wall of the cap;
The frame holder has an opening provided in the center, a plurality of holes oil mists and air was formed into a shape such as blown pivot clockwise or counterclockwise ejected from the opening of the cap The oil mist and air sprayed from the opening of the cap is configured to be swung clockwise or counterclockwise from the hole .
A device characterized by that.   Each of the plurality of holes of the frame holder has a rectangular or arc-shaped front shape forming an acute angle α with respect to each radial line extending from the center of the frame holder, and the thickness direction of the frame holder The device according to claim 1, wherein the device has a cross-sectional shape inclined at an acute angle β.

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