JPH0590296U - Ignition device of sintering machine - Google Patents

Abstract

(57) [Summary] [Structure] Fuel gas supply pipe (1) and combustion air supply pipe (2)
And a burner body (3) of a concentric double pipe that extends along the width direction of the pallet (e) on which the raw material to be processed is placed, and each supply pipe connected to this burner body (3). Multiple nozzle holes for jetting fuel gas and air supplied through (1) and (2) in directions that intersect each other
An ignition device comprising a burner tip (4) in which (n ₁ ) and (n ₂ ) are arranged, the burner body (3) and the burner tip (4).
Provide a removable refractory (6) at the connection part (5) of the. [Effect] The flame is not blown out due to the gas leakage from the connecting portion between the burner body and the burner tip, and safe and highly productive operation can be performed.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an igniter for a sintering machine, and more particularly to an igniter equipped with a burner having a combined structure of a burner body and a burner tip, which is intended to achieve more complete connection between the burner body and the burner tip. Is.

[0002]

[Prior Art]

 In general, the igniter of a sintering machine burns heavy oil, coke oven gas, or a mixed gas of coke oven gas and blast furnace gas, and the combustion flame of the burner obtained at that time and the joint action with high-temperature hot air It is used to burn the coke in the sintering raw material that has been loaded and deposited on the pallet in JP-A-62-19674.

In the ignition device disclosed in the above publication, a burner that forms a combustion flame is composed of a burner body and a burner tip, and surrounds only the tip of the burner tip, that is, the combustion atmosphere, and moves up and down according to the movement of the burner body. With a structure with a rotating burner hood, this enabled ignition control according to operating conditions, and was particularly effective in saving fuel.

[0004]

[Problems to be solved by the device]

 By the way, the ignition device provided with the above-described combination type burner has the following drawbacks, and there is still room for improvement.

That is, the burner tip and the burner body are connected with a mounting bolt with a packing having resilience interposed at the connection flange portion, and the bolt is the flame of the burner or the surface of the sintered raw material after ignition. The tightening force may be reduced due to the influence of radiant heat from the engine, and the gas and combustion air may leak from this connection, especially if the leaked gas ignites. There is also. Such a state is dangerous from the viewpoint of safe operation, and the ignition state of the sintering raw material is deteriorated, which causes the burning of the raw material to be insufficient and the product yield to be reduced.

The purpose of the present invention is to sinter the burner tip and the burner body so that a strong connection can be maintained by protecting the bonding means such as the mounting bolts caused by the flame of the burner or the radiant heat from the raw material in the sintered state. I am proposing an ignition device for a machine.

[0007]

[Means for Solving the Problems]

 This invention has a burner body of a concentric double pipe which has passages respectively connected to a fuel gas supply pipe and a combustion air supply pipe and extends along the width direction of a pallet on which a raw material to be treated is placed, and this burner body. Is an ignition device equipped with a plurality of nozzle holes for ejecting fuel gas and air supplied through each supply pipe in directions intersecting with each other, and connecting the burner body to the burner tip. An ignition device for a sintering machine, characterized in that the part is covered with a removable refractory material.

[0008]

[Action]

 The burner tip and the burner body are usually provided with flanges on each of them, and these are connected via mounting bolts. In this invention, in particular, this connection part is covered with a refractory which can be attached and detached, for example, castable refractory, plastic refractory, etc. so as to block the flame and radiant heat of the burner, so that the mounting bolt can be greatly extended. Nothing happens, so no flame comes out of the connection between the burner tip and the burner body.

Since the tip of the burner tip receives radiant heat from the combustion atmosphere, etc., the temperature of the burner tip as a whole rises, and the temperature of the joint between the burner tip and the burner body also rises accordingly. Is inevitable. However, the burner tip and burner body are cooled to some extent from the inside by the combustion gas and combustion air supplied through the interior, and the burner tip and burner body are not protected against the heat expansion of the mounting bolt. Since there is a packing with stability between them, it is possible to absorb some elongation, so there is no particular problem.

[0010]

【Example】

Hereinafter, the present invention will be described in detail with reference to the drawings. 1 and 2 show an embodiment of an ignition device for a sintering machine according to the present invention, in which 1 is a fuel gas supply pipe, 2 is a combustion air supply pipe, and 3 is a pallet on which a raw material S to be treated is placed. a burner body concentric double pipe extending along the width direction of e, and the inner tube 3b, also the hole d ₃ forms the burner body 3 having a rectifying plate d ₂ obtained by molding the hole d ₁ It consists outer tube 3a having a rectifying plate d ₄ which forms, which are connected to the fuel gas supply pipe 1 and the combustion air supply pipe 2, respectively. Reference numeral 4 denotes a burner tip connected to the burner body 3. The tip 4 is provided with a plurality of nozzle holes n ₁ and n for ejecting fuel gas and air supplied through the supply pipes 1 and 2 in directions intersecting with each other. ₂ are arranged (see FIG. 4). Reference numeral 5 denotes a connecting portion between the burner body 3 and the burner tip 4, and this connecting portion 5 has each of the flanges f ₁ and f ₂ here via a mounting bolt 5a with a packing P having a stability. It is shown as an example of connection. Reference numeral 6 denotes a refractory material that covers the connecting portion 5, and the refractory material 6 prevents the mounting bolt 5a from expanding due to heat. Further, 7 is a burner hood which surrounds the tip portion of the burner tip 4 and forms a combustion chamber c in the front area thereof. The burner hood 7 is integrated with the burner body 3 via a connecting member such as a bolt and a nut. Are linked together. Reference numeral 8 denotes a girder which is arranged and supported on a pedestal (not shown) of the sintering machine together with the fuel gas supply pipe 1 and the combustion air supply pipe 2, and the girder 8 is vertically and / or rotatably rotatable. A mechanism (not shown) is provided, and the burner body 3 and the burner tip 4 are moved up and down and / or rotated together with the burner hood 7, whereby the distance from the tip of the burner to the sintering raw material S, or fire. The spraying angle of the flame with respect to the sintering raw material S can be adjusted.

FIG. 3 shows more specifically an example of the arrangement of the refractory material 6 in the connection portion 5 between the burner body 3 and the burner tip 4. In the figure, 6a is a castable refractory material, 6b is a heat insulating material, 6c is a plastic refractory material, and 7a is a U-clip. By adopting such a configuration, the gas from the connecting portion 5 caused by the thermal expansion of the mounting bolt 5a can be obtained. Can be effectively prevented.

[0012]

[Effect of the device]

 Thus, according to the present invention, there is no danger of flame blowout due to gas leakage from the connection between the burner body and the burner tip, and the ignition state of the sintering raw material is stable, thus burning the raw material. It is possible to prevent a decrease in product yield due to a shortage.

[Brief description of drawings]

FIG. 1 is a structural explanatory view of an ignition device according to the present invention.

FIG. 2 is a structural explanatory view of an ignition device according to the present invention.

FIG. 3 is an enlarged view of a main part of an ignition device according to the present invention.

FIG. 4 is a diagram showing a state of arrangement of nozzle holes.

[Explanation of symbols]

1 Fuel gas supply pipe 2 Combustion air supply pipe 3 Burner body 3a Outer pipe 3b Inner pipe 4 Burner tip 5 Connection part 5a Mounting bolt 6 Refractory 7 Burner hood 8 Girder e Pallet S Raw material d ₁ Through hole d ₂ Straightening plate d ₃ through hole d ₄ straightening plate n ₁ nozzle hole n ₂ nozzle hole

Claims (1)

[Scope of utility model registration request] 1. A burner main body of a concentric double pipe having passages respectively connected to a fuel gas supply pipe and a combustion air supply pipe and extending along a width direction of a pallet on which a raw material to be treated is placed, and the burner main body. An ignition device having a burner tip in which a plurality of nozzle holes for ejecting fuel gas and air supplied through each supply pipe in a direction intersecting with each other are connected, and a connecting portion of the burner body and the burner tip is connected to the burner tip. An ignition device for a sintering machine, wherein the portion is covered with a removable refractory material.