JP2000329318A - Burner for mixing treatment of dry distillation gas and carbide - Google Patents

Abstract

PROBLEM TO BE SOLVED: To attain a stable combustion and a uniformed temperature distribution in a furnace by permitting a dry distillation gas to flow in and turn around the periphery of a mixing nozzle which mixes carbides and heated combustion air for jetting the mixture from the tip thereof and jetting the gas from the tip periphery of the mixing nozzle. SOLUTION: A generated carbide C is supplied to a mixing nozzle 2 through a carbide supply chute 6 of a mix treatment burner 1. At the same time, heated combustion air A is supplied to the mixing nozzle 2 through a heated combustion air nozzle 5 so as to jet a mixture of the carbide C and the heated combustion air A from the periphery of the mixing nozzle 2. On the other hand, dry distillation gas G is supplied to a swirling cone 3 for dry distillation gas through a gas supply pipe 7 to form a swirling flow centering the mixing nozzle 2 in the cone 3 and jetted from the tip periphery of the mixing nozzle 2. In this way, the dry distillation gas G collides and mixes with the mixture of the carbide C and the heated combustion air A at an exit 8 of the mix treatment burner. Thus, since the carbide C is subjected to premixing and then further mixed with the dry distillation gas having a good ignition quality in order to perform combustion, combustion is stabilized and uniformed temperature distribution is attained.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a burner for mixing and processing carbonized gas and carbonized waste used in a waste treatment facility for gasifying and melting general waste and industrial waste including special management.

[0002]

2. Description of the Related Art Conventionally, general waste and industrial waste have been treated by incineration and landfill. However, harmful substances such as dioxin and land suitable for landfill are no longer available. 2. Description of the Related Art In recent years, gasification and melting treatment of waste has attracted attention. In the gasification and melting treatment, waste is thermally decomposed into carbonized gas and carbide to be burned at a high temperature, and the incinerated ash is melted and recovered as slag.

According to the waste treatment equipment for gasifying and melting waste, the control of the emission of harmful substances such as dioxins, the reduction and reuse of incinerated ash, the recovery of resources such as iron and aluminum, and the use of energy Effective use is possible. Waste treatment facilities for gasifying and melting wastes include pyrolysis of wastes in a cracking gasifier to generate carbonized gas and carbides, charcoal is burned in a melting furnace, and carbonized gas is burned in a gas-fired furnace. Combustion and waste are pyrolyzed in a decomposition and melting furnace to generate carbonized gas and carbides.Carbide is burned in a decomposition and melting furnace, and carbonized gas is burned in a gas combustion furnace, and waste is processed in a decomposition and gasification furnace. There are various types, such as those that generate pyrolysis gas and carbide by pyrolysis and burn the carbonization gas and carbide in a melting furnace.In each case, the carbonization gas, carbide, and combustion air are individually separated from the furnace. It is supplied inside and burned.

[0004] Waste treatment facilities for burning and treating carbonization gas and carbide in separate furnaces require high equipment costs, and require auxiliary fuel for each furnace, thus increasing running costs. On the other hand, a waste treatment facility that burns and processes carbonized gas and carbide in a single furnace can reduce equipment costs and running costs.

[0005]

However, even in a waste treatment facility that burns and processes carbonized gas and carbide in one furnace, the carbonized gas, carbide and combustion air are separately supplied into the furnace. Inadequate mixing of the carbonized gas and combustion air, or of the carbide and combustion air, may result in incomplete combustion or uneven temperature distribution in the furnace.

The present invention solves the above-mentioned problem in a waste treatment facility for gasifying and melting waste, and efficiently mixes carbonized gas, carbide and combustion air with one burner and burns the mixture. It is another object of the present invention to provide a burner for mixing and processing carbonized gas and carbonized gas, which can provide stable combustion and uniform furnace temperature distribution.

[0007]

SUMMARY OF THE INVENTION A burner for mixing and processing carbonized gas and carbide according to the present invention supplies generated carbonized gas and carbide together with heated combustion air in a waste treatment facility for gasifying and melting waste. The carbonized gas supplied from the carbide supply chute and the heated combustion air supplied from the heated combustion air nozzle are mixed together, and the carbonized gas is swirled and swirled around a mixing nozzle that jets out from the tip. The above-mentioned problem is solved by providing a carbonization gas swirl cone ejected from around the tip of the nozzle.

[0008] In a waste treatment facility for gasifying and melting waste, generated carbide is supplied to a mixing nozzle from a carbide supply chute of a mixing burner. At the same time, the heated combustion air is supplied from the heated combustion air nozzle to the mixing nozzle, and the carbide and the heated combustion air are mixed by the Venturi effect and are ejected from the tip of the mixing nozzle. on the other hand,
The carbonization gas is supplied to a carbonization gas swirl cone. The carbonized gas that has flowed into the carbonized gas swirl cone is swirled and ejected from around the tip of the mixing nozzle, so that it is impact-mixed with the mixture of carbide and heated combustion air at the outlet of the mixing burner.

As described above, the carbide having a poor mixed combustion effect is preliminarily mixed with the heated combustion air by the mixing nozzle, and this mixture is mixed with the highly ignitable dry distillation gas at the outlet of the mixing burner and burned, whereby the mixture is stabilized. Combustion can be performed, and a uniform furnace temperature distribution can be obtained.

[0010]

FIG. 1 is a longitudinal sectional view of a burner for mixing and processing carbonized gas and carbide according to an embodiment of the present invention.
FIG. 2 is a plan view of a burner for mixing and processing carbonized gas and carbide,
FIG. 3 is a bottom view of a burner for mixing and processing carbonized gas and carbide;
FIG. 4 is an explanatory view of the mixing operation of the burner for mixing the carbonized gas and the carbide.

The mixing burner 1 includes a mixing nozzle 2
And a distilling gas swirl cone 3 provided around the mixing nozzle 2 around the mixing nozzle 2. In a waste treatment facility for gasifying and melting waste, a waste treatment facility is provided in a furnace that burns dry distillation gas and carbide. Used. The mixing nozzle 2 is provided with a cylindrical dispersing plate 4 having a conical shape at a front end and a heated combustion air nozzle 5 at a rear end.
The tip of the carbide supply chute 6 is open on the side surface of the mixing nozzle 2 near the tip of the nozzle.

The carbonization gas swirl cone 3 has a cylindrical upper part.
The lower part is funnel-shaped, and the upper outer peripheral surface is tangentially dry-distilled gas G
Is provided with a gas supply pipe 7 through which the gas flows. In a waste treatment facility that gasifies and melts waste, generated carbon C is supplied to the mixing nozzle 2 from the carbide supply chute 6 of the mixing burner 1. Mixing nozzle 2 at the same time
The heated combustion air A is supplied from the heated combustion air nozzle 5, the carbide C and the heated combustion air A are mixed by the Venturi effect at the tip of the heated combustion air nozzle 5, and the mixture is supplied to the dispersion plate 4 at the tip of the mixing nozzle 2. The collision causes a mixture of the carbide C and the heated combustion air A to be ejected from the surrounding area.

On the other hand, the carbonization gas G is supplied from the gas supply pipe 7 to the upper part of the carbonization gas rotating cone 3. Carbonization gas G
Flows tangentially to the carbonization gas swirl cone 3,
In the carbonization gas swirl cone 3, a swirling flow centered on the mixing nozzle 2 is ejected from around the tip of the mixing nozzle 2, so that the mixture of the carbide C and the heated combustion air A at the outlet 8 of the mixing burner impinge Is done.

As described above, the carbide C having a poor mixed combustion effect
Is premixed with the heating combustion air A by the mixing nozzle 2, and the mixture is mixed with the ignitable dry distillation gas G at the outlet 8 of the mixing burner 1 and burned, whereby stable combustion can be performed. A uniform furnace temperature distribution is obtained.

[0015]

As described above, the burner for mixing and processing carbonized gas and carbide according to the present invention is a waste treatment facility for gasifying and melting waste. The mixture can be efficiently mixed and burned to obtain stable combustion and a uniform furnace temperature distribution.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view of a burner for mixing and processing carbonized gas and carbide according to an embodiment of the present invention.

FIG. 2 is a plan view of a burner for mixing and processing carbonized gas and carbide.

FIG. 3 is a bottom view of a burner for mixing and processing carbonized gas and carbide.

FIG. 4 is an explanatory view of a mixing action of a burner for mixing a carbonized gas and a carbide.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Mixing process burner 2 Mixing nozzle 3 Carbonization gas swirl cone 4 Dispersion plate 5 Heating combustion air nozzle 6 Carbide supply chute 7 Gas supply pipe A Heating combustion air C Carbide G Carbonization gas

Claims (1)

[Claims] In a waste treatment facility for gasifying and melting waste, a mixed treatment burner of a carbonized gas and a carbide for supplying and burning the generated carbonized gas and a carbide together with heated combustion air, comprising: A carbonization gas swirl that mixes carbide supplied from a chute and heated combustion air supplied from a heated combustion air nozzle and injects and swirls the carbonized gas around the mixing nozzle that ejects from the tip and ejects it from around the tip of the mixing nozzle. A burner for mixing and processing carbonized gas and charcoal, provided with a cone.