Gasification burner using high-pressure swirled air

Abstract

Disclosed herein is a gasification burner using high-pressure swirled air. More particularly, the gasification burner using high-pressure swirled air is designed to enable partial cooling of a burner housing and to substantially prevent flames inside a combustion chamber from reaching an inner surface of the combustion chamber, resulting in an extension in the lifespan of the gasification burner. In the gasification burner comprising fuel feed pipe having a fuel injection nozzle, a combustion air feed pipe, an ignition plug, and a temperature sensor, which are located at one side of a combustion chamber defined in a burner housing, the gasification burner further comprises an air chamber unit, and a swirled air feeder unit. The air chamber unit is defined in an outer periphery of one end region of the housing where the fuel feed pipe and the combustion air feed pipe are mounted, and has a partition for providing the air chamber unit with a double-walled structure, defining an air feed channel. The swirled air feeder unit has a plurality of air-jet nozzles arranged along an inner periphery thereof near the fuel injection nozzle within the combustion chamber. The air-jet nozzles are obliquely disposed in a direction to communicate with the air feed channel.

Description

BACKGROUND OF THE INVENTION [0001] 1. Field of the Invention [0002] The present invention relates to a gasification burner using high-pressure swirled air, and more particularly to a gasification burner using high-pressure swirled air which is designed to enable partial cooling of a burner housing, and to substantially prevent flames inside a combustion chamber from reaching an inner surface of the combustion chamber, resulting in an extension in the lifespan of the gasification burner. [0003] 2. Description of the Related Art [0004] In general, aqueous waste, such as sewage slurry, food waste, etc., intrinsically contains a great deal of moisture. According to a solution proposed to process such aqueous waste, first, the aqueous waste is dehydrated until the moisture content thereof is reduced down to 70% to 90% via various processes including addition of wastewater treatment agents or activated sludge, sedimentation / concentration, mechanical-dehydration, or thermal-dehydration, et...

AI Technical Summary

Benefits of technology

[0013] Therefore, the present invention has been made in view of the above problems, and it is a first object of the present invention to provide a gasification burner using high-pressure swirled air which is designed to enable partial cooling of a burner housing, and to substantially prevent flames inside a combustion chamber from reaching an inner surface of the combustion chamber, thereby minimizing heat conduction from the combustion chamber to the housing.

[0014] It is a second object of the present invention to provide a gasification burner using high-pressure swirled air which can minimize the emission of heat generated within a combustion chamber to the outside.

[0015] It is a third object of the present invention to provide a gasification burner using high-pressure swirled air which can allow more effective feeding of combustion air.

Problems solved by technology

In case that the sludge-state waste is buried in the land or at the bottom of the sea, it cannot be dissolved by bacteria since additives used in its treatment processes act to hinder effective action of the bacteria contained in the land or the sea water.

Further, when the sludge-state waste is discharged into the river or the sea, since the discharged waste contaminates the river or the sea, it is in conflict with environmental laws and regulations.

In such a conventional gasification burner, however, since the interior temperature of the combustion chamber is excessively raised in the process of burning, there are induced many faults related to cooling manners of the combustion chamber.

In case of the former air-cooling manner using a jacket-shaped air chamber defined throughout an outer periphery of the combustion chamber, flames generated inside the combustion chamber reach an inner surface of the combustion chamber, causing an excessive temperature difference between the interior of the combustion chamber and the outside of the air chamber.

This induces frequent breakage of welding junctures of the air chamber, and hinders effective cooling of the combustion chamber, making it impossible to use the gasification burner.

The latter water-cooling manner is also unsuitable to cool the above-mentioned extremely high temperature of approximately 1100 to 1500 degrees centigrade using water.

Even in the case of rapid pressure rise due to the heating of the water in a circulating channel, there exists a risk of explosion, and thus the gasification burner requires a rigid design sufficient to endure such a high pressure.

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