JPH0128853B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a method for preventing clinker adhesion using combustion exhaust gas.

Conventional configuration and its problems Conventionally, as a method to prevent clinker from adhering inside the incinerator, for example, cooling the furnace wall from the outside,
There was a method of indirectly cooling the areas where there was a risk of clinker adhering. However, this method of cooling the furnace wall from the outside has a problem in that it is difficult to reliably prevent clinker from adhering to the wall because it is indirect.

OBJECTS OF THE INVENTION It is an object of the present invention to provide a clinker adhesion prevention method using combustion exhaust gas that solves the above-mentioned conventional problems.

Structure of the Invention In order to achieve the above-mentioned object, the method for preventing clinker adhesion using combustion exhaust gas of the present invention provides a method for preventing clinker adhesion using combustion exhaust gas by directing combustion exhaust gas led from outside of the incinerator to a location in the incinerator where clinker is likely to adhere. This method is designed to lower the flame temperature in the vicinity of the incinerator, thereby effectively preventing the formation and adhesion of clinker in the incinerator.

Embodiment and Operation An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

In the figure, 1 is the incinerator, 2 is the incineration material supply hopper, 3 is the dry operation grate, 4 is the combustion grate, 5 is the after-combustion grate, and 6 is installed below each grate 3, 4, and 5. The ash falling from the grate 3, 4, 5 is guided to the under-grate conveyor 7 through the hopper 6. Reference numeral 8 denotes a plurality of combustion secondary air supply nozzles installed at appropriate positions on the side wall of the incinerator 1. When burning the incinerated material, each grate 3,
Primary air for combustion is introduced from below 4 and 5, and secondary air for combustion is introduced from this secondary air introduction nozzle 8 for combustion.

With such a configuration, for example, if there is a risk that clinker may adhere to a specific location A on the side wall of the incinerator 1, a plurality of combustion exhaust gas blowing nozzles 9 are provided at the location A on the side wall. Alternatively, a plurality of combustion exhaust gas blowing nozzles 10 are provided on both sides of the vertical hearth in the stepped portion formed between the dry operation grate 3 and the combustion grate 4. When burning the incinerated material on the fire grates 3, 4, and 5, the combustion exhaust gas introduced from outside the incinerator 1 is blown into the furnace through the combustion exhaust gas blowing nozzle 9 or 10. This will reduce the flame temperature in the vicinity and effectively prevent clinker formation and adhesion. In this case, the combustion exhaust gas blown from the combustion exhaust gas blowing nozzle 10 is blown toward the location A parallel to the furnace wall, that is, along the furnace wall.

On the other hand, if there is a risk that clinker may adhere to the central part B of the horizontal vertical hearth in the stepped section formed between the dry operation grate 3 and the combustion grate 4, multiple clinkers are deposited in the central part B of the horizontal vertical hearth. A combustion exhaust gas blowing nozzle 11 is provided. In addition, a combustion exhaust gas blowing chamber 12 is provided behind the water vertical wall, that is, in the hopper 6 below the dry operation grate 3, so that the combustion exhaust gas can be blown in all at once from each combustion exhaust gas blowing nozzle 11. And grate 3,
4 and 5, the combustion exhaust gas is introduced from the outside of the incinerator 1 into the combustion exhaust gas blowing chamber 12, and is blown into the furnace through each combustion exhaust gas blowing nozzle 11. This will reduce the flame temperature in the vicinity and effectively prevent clinker formation and adhesion.

Effects of the Invention As described above, according to the present invention, the generation and adhesion of clinker in the incinerator can be effectively prevented.

[Brief explanation of drawings]

The drawings are for explaining one embodiment of the method of the present invention, and FIG. 1 is a longitudinal cross-sectional view of an incinerator, and FIG. 2 is a cross-sectional view of FIG. 1. 1... Incinerator, 9, 10, 11... Combustion exhaust gas blowing nozzle.

Claims (1)

[Claims] 1 Prevention of clinker adhesion using combustion exhaust gas, characterized by blowing combustion exhaust gas led from the outside of the incinerator into areas in the incinerator where there is a risk of clinker adhesion, and lowering the flame temperature in the vicinity. Method.