JPH06213420A - Gun type burner for fluidized incinerating system - Google Patents

Abstract

PURPOSE:To reduce a maintenance cost and to provide a partition thickness responsive to a furnace pressure by facilitating replacement of a forward partition plate. CONSTITUTION:Since a forward partition plate 10 made of refractory stainless steel or ceramics of a gun type burner of a fluidized incinerating system is mounted with bolts 21, its replacement is facilitated. Since holes of the plate are less in diameter than a thickness of the plate, its manufacture is easy and low-cost, and maintenance cost is reduced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a gun burner for a fluidized incineration system used for incinerating sludge and the like.

[0002]

2. Description of the Related Art A sludge incinerator using a gun burner is known in Japanese Patent Publication No. 63-24213. The gun burner used here is divided into a pilot combustion chamber and a main combustion chamber, but the front partition plate that serves as a partition is always burned by the flame of the pilot burner, so it is easy to burn out, but it is the burner cylinder of the burner. Since it was integrally welded to the burner, the burner cylinder had to be replaced when replacing.

[0003]

DISCLOSURE OF THE INVENTION The present invention solves the above-mentioned conventional problems and facilitates the exchange of front partition plates to reduce the maintenance cost, and at the same time, the fluidized incineration system can make the partition thickness according to the furnace pressure. The purpose is to provide a gun burner for the system.

[0004]

To achieve the above object, the present invention provides a main burner inserted into a burner cylinder, a front partition plate mounting flange fixed to the front of the outer periphery of the main burner, A front partition plate, which is attached to the front partition plate mounting flange with a bolt, is made of heat-resistant stainless steel or ceramic and is provided with holes having a hole diameter equal to or less than the plate thickness, and a main combustion chamber in front of the front partition plate. We propose a gun burner for a fluidized incineration system consisting of a pilot combustion chamber behind the front partition plate.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A gun burner for a fluidized incineration system according to the present invention will be described below with reference to the embodiments shown in the drawings. FIG. 1 shows a gun burner (2) for a torch to which the gun burner of the present invention can be applied.
And a gun burner in sand (6) with a fluidized incinerator (1). That is, the in-sand gun burner (6) (the same applies to the torch gun burner (2)) is used by inserting it into the burner insertion tube (3) of the fluidized incinerator (1).

The sand gun burner (6) has a burner tube (6a) as shown in FIG. The main burner (7) shown in FIG. 3 is inserted into the burner cylinder (6a) from the base portion in the distal direction.

A front partition plate mounting flange (8) is fixed to the front side and a rear partition plate (9) is fixed to the rear side of the outer periphery of the main burner (7). A front partition plate (10) having holes is attached to the front partition plate mounting flange (8) with a single or plural bolts (21). That is, the front partition plate (10) is made of heat-resistant stainless steel (for example, precision cast product) or ceramic (for example, molded product).
Further, the hole has a hole diameter equal to or smaller than the plate thickness of the front partition plate (10) to facilitate manufacture and adjustment of the partition thickness.

Next, as shown in FIG. 3, a part of the outer periphery of the rear partition plate (9) is cut out to provide an air gap. Further, a spark plug (11) and a pilot burner (12) are inserted and attached to the rear partition plate (9).

The room formed between the front partition plate (10) and the rear partition plate (9) is a pilot burner (1).
2) is used as a pilot combustion chamber A that projects.

The chamber in front of the front partition plate (10) is used as the main combustion chamber B. On the other hand, the air gap of the rear partition plate (9) is also for ensuring the visual field of the flame eye (20) for monitoring the combustion state of the pilot combustion chamber A.

Next, the torch gun burner (2) is shown in FIG. 4, but has the following features in comparison with the sand gun burner (6).

That is, since the fluctuation of the furnace pressure is smaller than that when it is used in sand, flame holding of the pilot burner (12) is facilitated and its structure is simplified. The detection of the pilot flame is performed by the flame detection rod (19).

The function of the gun burner for fluidized incineration system of the present invention shown in the above embodiment will be described below with respect to the sand gun burner. That is, the pilot burner (12) is ignited by the spark plug (11). The flame of the pilot burner (12) reaches the front partition plate (10), flows from its hole to the main combustion chamber B, and is used for ignition of the main burner (7).

The main burner (7) may be extinguished due to pressure fluctuations in the fluidized incinerator (1), but the pilot flame is not extinguished because the pilot combustion chamber A is partitioned by the front partition plate (10). Continue burning. As a result, even if the main burner (7) is extinguished in the main combustion chamber B, it is immediately re-ignited by the pilot flame.

As a result of the above, the in-sand gun burner (6) continues combustion and maintains the temperature of sludge at a high temperature, and the fluidized incinerator (1)
Incinerate the sludge inside. Next, the front partition plate (10), which is exposed to a high temperature in the pilot combustion chamber A, on the surface where the pilot flame hits.

Therefore, it is necessary to remove the front partition plate (10) from the front partition plate mounting flange (8) and replace it at regular intervals. The number of front partition plates (10) is the fluidized incinerator (1)
It will be increased or decreased depending on the situation.

[0017]

The gun burner for fluidized incineration system according to the present invention is as described above, and its effects are listed below. (1) The gun burner of the present invention is particularly easy to replace because the front partition plate made of heat-resistant stainless steel or ceramic is attached with bolts. (2) In the gun burner of the present invention, since the holes of the front partition plate made of heat-resistant stainless steel or ceramic have a hole diameter equal to or less than the plate thickness, they are easy to manufacture, inexpensive, and low in maintenance cost.

[Brief description of drawings]

FIG. 1 is a conceptual diagram showing a sand burner and a torch gun burner to which a pilot burner of the present invention is applicable, together with a fluidized incinerator.

FIG. 2 is a sectional side view of the sand gun burner of FIG.

FIG. 3 is a perspective view of the in-sand gun burner of FIG.

4 is a sectional side view of the torch gun burner of FIG.

[Explanation of symbols] 1 fluidized incinerator 2 gun burner for torch 3 burner insertion tube 4 hot air inlet 5 exhaust port 6 sand gun burner 6a burner tube 7 main burner 8 front partition plate mounting flange 9 rear partition plate 10 front partition plate 11 Spark plug 12 Pilot burner 19 Flame detection rod 20 Flame eye 21 Bolt A Pilot combustion chamber B Main combustion chamber

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Internal reference number FI technical display location F23Q 9/00 M 9334-3K

Claims (1)

[Claims] A main burner inserted into a burner cylinder, a front partition plate mounting flange fixed near the front of the outer periphery of the main burner, and a heat resistant stainless steel or ceramic mounted on the front partition plate mounting flange with a bolt. A single or a plurality of front partition plates provided with holes having a hole diameter equal to or less than the plate thickness thereof, and a main combustion chamber in front of the front partition plates,
Gun burner for fluidized incineration system consisting of pilot combustion chamber behind partition plate