JP2554586B2 - Combustion promoting member for dust incinerator - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combustion promoting member which can reduce the generation of incomplete combustion gas when used in a dust incinerator in the vicinity of the outlet of a combustion chamber or at the outlet passage.

[0002]

2. Description of the Related Art Conventionally, a contact body such as a ceramic filter has been passed through in order to completely burn exhaust gas that has left the combustion chamber. However, there was a problem that the combustion efficiency was poor.

[0003]

Therefore, according to the present invention, the combustion efficiency can be improved while the pressure loss is kept small and the passage time can be lengthened by being used near the outlet of the combustion chamber or at the outlet passage. At the same time, it is an inexpensive medium that can well mix air and promote combustion.

[0004]

For this reason, the present invention is to dispose near the outlet of the dust combustion chamber or at the outlet passage, and a ceramic body having a large number of corrugations formed in parallel or a metal plate coated with ceramics. By joining a number of heat-resistant corrugated plates that are formed so that their corrugations cross each other obliquely, or by molding the joined state of the pair of corrugated plates by pouring out and burning and then joining a plurality of them. A large number of gas passages facing each other with different inclinations are formed at both ends. A heat-resistant corrugated plate having a catalyst supported on the surface may be used.

[0005]

By arranging in the vicinity of the outlet of the dust combustion chamber or in the outlet passage, the combustion gas passes from the opening at one end along the corrugated portion of the gas passage and exits from the opening at the other end. Since a large number of gas passages are oblique and pass obliquely, the passage time becomes long, and combustion is promoted by the contact with the corrugated wall which is at a high temperature. Further, since the gas passages face each other with different inclinations, the paths of the combustion gases intersect with each other in the respective gas passages and partially communicate with the adjacent gas passages to make contact with the combustible gas. And, the mixing of air is promoted and combustion is promoted.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The illustrated embodiments of the present invention will be described below. FIG.
In this example, the heat-resistant corrugated plates 1 are opposed to each other to form the gas passage 2, and a large number of these are connected to form the combustion promoting member 3. Each heat-resistant corrugated board 1 is shown in FIG.
As described above, the corrugated wall portion 11 is tilted with the ceramic raw material to form a large number of parallel-formed dough bodies, which are then fired. Since it is a quadrangle, the wave wall portions at both ends are notched in half.

Then, the heat-resistant corrugated board 1 is overlapped at both ends, and as shown in FIG. 3, a pair of wave wall portions 11 are opposed to each other so as to cross each other obliquely, and a plurality of them are laminated as shown in FIG. As a result, the combustion promoting member 3 is formed, and as shown in FIG. 5, it is laid horizontally in the outlet passage 4 of the combustion chamber of the dust incinerator. In addition, the distance between the crests of each wave wall 11 is 5 cm.
And the long diagonal line of the opening portion of the gas passage 2 formed by the opposing arrangement is about 7.5 cm. A proper range may be a diagonal opening of 1 to 10 cm depending on the structure of the incinerator.

According to this example, in the combustion promoting member 3, since the combustion gas obliquely passes along the wave wall portion 11, the passage residence time becomes long, and at the high temperature of the wave shaped wall portion 11. The contact promotes combustion. Further, since the gas passages 2 face each other with different inclinations, the paths of the combustion gases intersect each other in the respective gas passages 2 and, as shown by arrows in FIG. The combustible gas and the air are promoted to be mixed with each other, so that the combustion is promoted.

Further, since the heat-resistant corrugated boards 1 having the same shape are alternately laminated so that the front and back are opposite to each other, the manufacture is simple and the manufacturing cost can be reduced. Further, since the corrugated plate can maintain the strength even if the plate thickness is made thin, the space step area occupied by the corrugated plate portion can be made small, and the resistance against passage of combustion gas, that is, the pressure loss can be made extremely small. Of.

Thus, the gas passage 2 of the combustion promoting member 3
As a result, the combustion becomes close to complete combustion, and the emissions of incomplete combustion gas, sparks, soot, etc. from the incinerator are reduced, and good environmental protection can be dealt with.

When the combustion gas flows laterally in the outlet passage of the incinerator as shown in FIG. 5, the heat-resistant corrugated plate 1 is used.
In the arrangement (horizontal arrangement) in which the
The combustion gas undergoes left-right mixing, and in an arrangement in which the heat-resistant corrugated sheet 1 is upright (vertical arrangement), the combustion gas undergoes up-down mixing. Normally, in a dust incinerator, mixing of upper and lower combustion gases is most necessary for complete combustion, and the vertical arrangement is usually effective. However, if the vertical and horizontal arrangements are arranged in series, the mixing of the combustion gases will be more complete and closer to perfect combustion. Further, even when the combustion gas flows in the vertical direction, the same effect can be obtained by combining the vertical arrangement and the horizontal arrangement.

Although the present embodiment is configured as described above, the present invention is not limited to this. For example, a heat-resistant corrugated board with a large number of corrugations formed in parallel is formed of various ceramic bodies,
Alternatively, if it is formed by coating a metal plate with ceramics, heat resistance of about 1000 degrees can be obtained. Further, the shape and the number of the corrugated portions are not limited regardless of the shape of the heat-resistant corrugated board. Alternatively, the joining state of the pair of corrugated plates may be formed by pouring ceramics by firing mud and firing, and then joining a plurality of them. Furthermore, if a catalyst is supported on the surface of the heat-resistant corrugated plate, it will function as a catalyst. It should be noted that, in order to maintain the high temperature, it may be disposed near the outlet in addition to the outlet passage of the dust combustion chamber.

[0013]

According to the present invention, since a large number of gas passages are oblique, the combustion gas is caused to pass obliquely and the residence time becomes long, and the gas passages face each other with different inclinations. In the corrugated wall part where the temperature of the gas crosses each other in the respective gas passages and is partially communicated with the adjacent gas passages so that the combustible gas and the air are mixed and the temperature is high. The large effect of promoting combustion by contact of the. Further, in the second aspect, the catalytic effect can be achieved at the same time as the promotion of combustion.

[Brief description of drawings]

FIG. 1 is a perspective view showing a part of an embodiment of the present invention.

FIG. 2 is a perspective view of the heat-resistant corrugated board.

FIG. 3 is a front view showing a state where the heat-resistant corrugated plates are joined to face each other.

FIG. 4 is an enlarged plan view of an essential part of an embodiment formed by stacking the layers.

FIG. 5 is a front view of the incinerator arranged in the outlet passage of the combustion chamber.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Heat-resistant corrugated plate 11 Corrugated wall 2 Gas passage 3 Combustion promoting member 4 Combustion chamber outlet passage

Claims (2)

(57) [Claims] 1. A heat-resistant corrugated plate, which is disposed near an outlet or an outlet passage of a dust combustion chamber and has a large number of corrugations formed in parallel, or a heat-resistant corrugated plate formed by coating a metal plate with ceramics. Of the corrugated plates are formed by pouring the sludge from the pair of corrugated plates and firing them. A combustion promoting member for a dust incinerator, characterized in that a gas passage is formed at both ends. 2. The combustion promoting member according to claim 1, which is a heat-resistant corrugated plate having a catalyst supported on the surface thereof.