JP2000346332A - Central partition metallic material for incinerating - Google Patents

Abstract

PROBLEM TO BE SOLVED: To supply a necessary amount of air to cool a central partition metallic material of a main combustion area and to prolong a lifetime of the material by providing a cooling air duct having a plurality of air outlets formed with a regulating means of a diffused air flow rate in the material provided at a connecting portion of a fire grate unit of an incinerating furnace. SOLUTION: Many metallic materials 5 are connected at end faces and mounted at a metallic material mounting member 11 from a dry area to an after-burning area to form a central partition metallic material. A cooling air duct 10 is formed in the material, that is, inner spaces of the materials 5 connected at the end faces and mounted at the member. A plurality of air outlets 14 are opened at an interval on an upper side of the duct 10. Regulating plates 15 for regulating opening areas of the outlets 14 are mounted at the duct 10 by bolts 16, and the opening areas are regulated by unclamping the bolts 16, rotating the plates 15 to become a predetermined opening area and then clamping the bolts 16.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a central partition provided at a connection portion of a grate unit for an incinerator for municipal waste.

[0002]

2. Description of the Related Art A grate of an incinerator for incinerating municipal solid waste and the like is provided with a plurality of grate units composed of a movable grate and a fixed grate to secure a required grate area. But,
Due to the mounting structure of the grate unit, a joint is formed at the center between adjacent grate units. Therefore, a partition is attached to this joint so that the shape does not hinder the movement of dust and the like. FIG. 6 is a plan view of the grate surface 1 formed in this manner.
3 shows a state in which the center partition 3 is provided at the joint of FIG.

[0005] As shown in FIG. 5, a large number of metal members 5 to 5 are attached to a metal mounting member provided on a beam 4 of a grate mounting frame, and the center partition metal member 3 is attached by bolts. Since the metal member 5 has a U-shaped cross section, a tunnel-shaped space is formed inside the central partition metal member 3. During refuse combustion, the central partition in the main combustion zone 22 is exposed to a high temperature atmosphere of about 900 ° C. and slides on the grate. For this reason, heat loss of the hardware 5 is remarkable. In addition, 2
1 is a dry zone upstream of the main combustion zone 22, 23 is a main combustion zone 22
Downstream after combustion zone. In order to reduce the heat loss, cooling air is supplied to the vacant space of the center partition 3 from the upstream side (the side into which garbage is charged) to cool the metal. The arrow A indicates the flow of the cooling air and the leakage from the gap G.

[0004]

However, when cooling air is blown directly into the space of the central partition 3, air leaks from the joint gaps G to G of the metal 5 to 5 upstream of the main combustion zone. . For this reason, there is a problem that the amount of air for cooling the metal in the main combustion zone 22 that needs to be cooled to a high temperature becomes insufficient, and the life of the metal is not so much improved. When the hardware is thermally worn, air blow-through from under the grate occurs, and the amount of dust falling under the grate increases.

SUMMARY OF THE INVENTION An object of the present invention is to provide a center partition metal having a long life and capable of reliably supplying an air amount necessary for cooling metal in the main combustion zone.

[0006]

SUMMARY OF THE INVENTION The object of the present invention is to provide a central partition provided at a joint of a grate unit of an incinerator, and a means for adjusting the flow rate of blown air inside the central partition. This is achieved by a central partition of an incinerator provided with a cooling air duct having a plurality of attached air outlets.

In the present invention, a cooling air duct is provided inside the center partition, and a plurality of air outlets provided with a means for adjusting the amount of blown air are provided in the cooling air duct. Therefore, by adjusting the opening area of the air outlet of the cooling air duct upstream of the central combustion area by means of the blow air flow rate adjusting means, the drying area, the main combustion area and the post-combustion area have metal parts, The required cooling air can be supplied. Therefore, the hardware in the central combustion zone, which is exposed to the highest temperature, can be sufficiently cooled.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a longitudinal sectional view of a center partition according to the present invention, FIG. 2 is an enlarged view of a portion A in FIG. 1, FIG. 3 is a sectional view taken along line AA in FIG. 2, and FIG. It is a top view of the air outlet of a duct.

A beam 4 of the grate mounting frame is provided from the drying zone 21 to the post-combustion zone 23. Mounting plates 4 a to 4 a are mounted on the beam 4 at intervals.
The hardware mounting member 1 is mounted on these mounting plates 4a to 4a.
1 is installed from the drying zone 21 to the post-combustion zone 23. As shown in FIG.
Bolt holes are drilled on both sides. The bolt holes are formed in accordance with the intervals between the bolt holes formed in the legs of the hardware 5. The inner dimensions of the legs of the hardware 5 are large enough to fit on the outer surface of the hardware mounting member 11.
And the attachment of the hardware 5 to the hardware mounting member 11 is as follows.
The fitting is performed by fitting the leg of the metal fitting 5 to the outer surface of the metal fitting member 11, aligning the bolt hole of the metal fitting leg with the bolt hole of the metal fitting member 11, and tightening the bolt 12.

In this way, the hardware mounting member 11
Numerous metal parts 5 to 5 from the drying zone 21 to the post-combustion zone 23
Are attached with their end faces joined to form a central partition 3. A cooling air duct 10 is formed in the center partition metal member 3, that is, in the internal space of the metal members 5 to 5 attached by joining the end faces as follows.

In this example, the drying region 21 is shifted from the main combustion region 22
Although the cooling air duct 10 is formed in the range, the formation range may be from the drying zone 21 to the post-combustion zone 23. A plurality of air outlets 14 are provided on the upper side of the cooling air duct 10 at intervals. In this example, one air outlet is provided for two pieces of metal. Figures 3 and 4
As shown in FIG. 1, an adjusting plate 15 for adjusting the opening area of the air outlet 14 is attached to the cooling air duct 10 by bolts 16. The adjustment of the opening area is performed by loosening the bolt 16 and rotating the adjusting plate 14 to have a predetermined opening area, and then fastening the bolt 16. Since the central partition 3 is exposed to a high-temperature atmosphere in the main combustion zone, the opening area of the air outlet 14 in the dry zone is set small, and the opening area of the air outlet in the main combustion zone is set large. As a result, a sufficient amount of cooling air can be supplied to the hardware 5 in the main combustion area.

In FIGS. 1 and 2, the cooling air supplied to the upstream end of the cooling air duct 10 by a fan (not shown) flows in the cooling air duct in the direction of the arrow B, and the air is discharged from the air outlets 14 to 14 to empty the metal objects. Enter the place 5a and cool the hardware 5. Thereafter, the cooled air is supplied from the gaps G to G at the joints of the hardware 5 to the central partition metal and the garbage moving around the metal partition, and used as the stirring and combustion air.

[0013]

According to the center partition metal of the present invention, the amount of cooling air to be blown out from each air outlet can be adjusted. Can be supplied to a small amount of hardware.
Accordingly, the service life of the hardware in the main combustion region is extended. As a result, it is possible to prevent blow-through of air from below the grate, which has conventionally occurred due to thermal wear of hardware in the main combustion region, and to reduce the amount of dust falling.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a center partition according to the present invention.

FIG. 2 is an enlarged view of a portion A in FIG.

FIG. 3 is a sectional view taken along line AA of FIG. 2;

FIG. 4 is a plan view of an air outlet of a cooling air duct according to the present invention.

FIG. 5 is a longitudinal sectional view of a conventional center partition metal member.

FIG. 6 is a plan view showing a relative position between a grate and a center partition.

[Explanation of symbols]

 REFERENCE SIGNS LIST 3 center partition metal 4 beam 5 metal 5 a metal void 10 cooling air duct 11 metal mounting member 12 bolt 14 air outlet 15 adjustment plate 21 dry area 22 main combustion area 23 after combustion area

 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Shigeyuki Doi 1-2-1, Marunouchi, Chiyoda-ku, Tokyo, Japan Inside Nihon Kokan Co., Ltd. (72) Inventor Eiichi Shibuya 1-2-1, Marunouchi, Chiyoda-ku, Tokyo, Japan Inside the Honko Tube Co., Ltd. (72) Koji Omata, 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Japan 1-2.Inventor Masaaki Nishino 1-2-1, Marunouchi, Chiyoda-ku, Tokyo, Japan (72) Inventor Naoyuki Isozaki 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Tomio Ito 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Kazufumi Zhang, Inventor 1-2-1, Marunouchi, Chiyoda-ku, Tokyo Nihon Kokan Co., Ltd. (72) Inventor Yasuhiro Miyakoshi Chiyo, Tokyo Subdivision Marunouchi chome No. 1 No. 2 Date. This steel pipe within Co., Ltd. (72) inventor Noboru Taguchi Marunouchi, Chiyoda-ku, Tokyo chome No. 1 No. 2 Date. This steel pipe Co., Ltd. in the F-term (reference) 3K065 GA03 GA12 GA33 GA53

Claims (1)

[Claims] A cooling air provided at a joint of a grate unit of an incinerator and having a plurality of air outlets provided with a means for adjusting a flow rate of blown air inside the central partition. Central divider hardware for incinerators with ducts.