KR20010011920A - Cyclone burner - Google Patents

Abstract

PURPOSE: A cyclone burner is provided to maximize combustion efficiency by making air for combustion rotate and flow while forming a spiral root and to minimize air pollution caused by exhaust gas discharged after combustion. CONSTITUTION: A main body(11) is formed in a cyclone shape to firstly rotate and move air for combustion forcibly flowed in by driving a blower fan through an air inflow hole(10). A pipe shape fuel gas inflow pipe(12) is formed to cross the center of an inner part of the main body(11). The fuel gas inflow pipe linearly flows pyrolysis gas generated upon burning a waste tire into a combustion chamber. The air passing through the main body is formed in a spiral root to perfectly burn the air for combustion and fuel gas flowed in through the inflow pipe. Then, a guide vane is formed on an outer circumference of the fuel gas inflow pipe.

Description

Cyclone burner

The present invention relates to a cyclone burner, and more particularly, to thermally decomposed thermally generated by incineration of waste tires that are linearly introduced by forcibly turning flow in the process of introducing combustion air into the combustion chamber. It relates to a cyclone burner to improve the mixing characteristics with fuel gas to maximize the combustion efficiency.

An object of the present invention, the combustion air flowing into the combustion chamber to make a spiral flow while forming a spiral trajectory to maximize the combustion efficiency due to the complete combustion due to the ideal mixing with the fuel gas, air pollution due to the exhaust gas discharged after combustion One cyclone burner is provided to minimize this.

Another object of the present invention is to provide a cyclone burner capable of saving fuel by maximizing effective heat generation of fuel gas.

1 is a schematic view of a cyclone burner according to the present invention,

2 is a side view of the cyclone burner according to the present invention;

3 is a view showing the temperature distribution in the combustion chamber when using a cyclone burner according to the present invention,

4 is a view showing a temperature distribution when there is no swirl flow in the combustion chamber;

5 is a view showing the distribution of CO concentration in the combustion chamber when using a cyclone burner according to the present invention,

6 is a view showing the distribution of CO concentration in the combustion chamber when there is no swirl flow in the combustion chamber.

* Explanation of symbols used in the main part of the drawing

10; Air inlet

11; Cyclone Body

12; Fuel gas inlet pipe

13; Guide vane

14; Outlet

15; Fuel gas diffusion plate

The object of the present invention described above is a cyclone-type body that primarily flows the combustion air forcibly introduced through an air inlet formed on one side, and is formed to cross the center of the inside of the body to generate the waste tire during combustion. A fuel gas inlet tube through which the pyrolysis gas is introduced into the combustion chamber, and the fuel gas linearly introduced through the fuel gas inlet tube and the combustion air passing through the body are ideally mixed and passed through the body so as to be completely burned. It is achieved by providing a cyclone burner, characterized in that it comprises a discharge port formed with a guide vane for forming a spiral trajectory of the combustion air to rotate secondary flow.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings, which are intended to be described in detail so that those skilled in the art can easily practice the present invention in order to facilitate understanding of the present disclosure. This does not mean that the technical scope herein is limited.

As shown in FIGS. 1 and 2, the main body 11 is configured to primarily rotate flow air for combustion that is forcibly introduced by the driving of a blower fan not shown through an air inlet 10 formed at one side thereof. It is formed in a cyclone type, so that the pipe-shaped fuel gas inlet pipe 12 for linearly injecting pyrolysis gas generated when the waste tire is burned into a combustion chamber not shown crosses the inner center of the cyclone body 11. And a spiral trajectory of the combustion air passing through the main body 11 so that the fuel gas flowing through the fuel gas inlet pipe 12 and the combustion air passing through the main body 11 are ideally mixed and completely combusted. A guide vane 13 is formed on the outer periphery of the fuel gas inlet pipe 12 located at the discharge port 14 side of the main body 11 to form a spiral root and to make secondary swirl flow.

Reference numeral 15 is formed at the end of the fuel gas inlet pipe 12 on the combustion chamber side, the inlet into the combustion chamber is a fuel gas expansion plate to change the flow direction of the fuel gas to flow toward the wall surface of the combustion chamber.

Hereinafter, a method of using the cyclone burner as described above will be described.

As shown, the pyrolyzed fuel gas generated during combustion of the waste tire and the like is linearly introduced into the combustion chamber through the fuel gas inlet pipe 12 formed to cross the cyclone-type body 11. At this time, the combustion air flows into the main body 11 through an air inlet 10 formed at one side of the main body 11 by driving a blower fan, not shown, and is primarily pivoted by the shape of the internal structure of the main body 11. It is floating.

The combustion air flowing into the cyclone-type main body 11 and swirling flows through the guide vane 13 formed at the outer periphery of the fuel gas inlet pipe 12 into the discharge port 14 of the main body 11. As it forms, it is flowed secondarily and then flows into the combustion chamber.

Therefore, when the pyrolysis gas for combustion flows into the combustion chamber by forcibly turning the steel (generally, the steel turning means that the number of turns is 0.67 or more, and the cyclone burner of the present invention turns the number of turns) Iii) is a steel swirling flow field formed at 1.0 or more), and combustion air that is swirled while passing through the above-described guide vane 13 is completely burned with fuel gas linearly introduced through the fuel gas inlet pipe 12. Ideally it should be mixed.

That is, the mixed combustion gas (which means that the fuel gas and the combustion air are mixed as a predetermined ratio) moves toward the wall surface of the combustion chamber due to the strong centrifugal force of the combustion air accompanied by the turning flow.

For this reason, as a region having a relatively low pressure is formed at the front of the combustion chamber inlet, an empty space is temporarily formed in the center of the combustion chamber. In this way, the combustion gas flows backward in the downstream portion into a low pressure empty space.

In the center of the combustion chamber, a zone (central recirculation zone) where hot combustion gas continuously circulates is formed so that radiant energy is transmitted to the incoming fuel gas and combustion air, so that the flame is continuously kept stable. As the flow proceeds while forming a spiral trajectory, there is a lot of opportunity to come into contact with the fuel gas flowing into the center, thereby improving the mixing characteristics of fuel and air.

As a result, the temperature distribution inside the combustion chamber becomes uniform, and the combustion efficiency can be maximized.

This will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 3, the temperature increases along the interface due to the characteristics of the combustion reaction while mixing at the interface where the fuel gas flowing into the center of the combustion chamber and the surrounding air are in contact with each other, and the incoming combustion air is in contact with each other. The temperature continues to increase. However, after a certain position, the temperature gradually decreases due to energy transfer to the surroundings and direct radiant heat transfer to the wall. In other words, the maximum temperature value is located at a location not far from the inlet due to the characteristics of the swing flow.

As such, the phenomenon in which the temperature is homogenized from a position not far from the inlet is also a phenomenon that occurs because the mixing characteristics are improved by the swing flow.

On the other hand, as shown in FIG. 4 which shows the temperature distribution for the case where fuel gas and air are introduced without turning, the temperature is lower than in the case where there is turning in most regions except the center part, and The temperature gradient (the temperature difference along a certain direction) is severe.

That is, it can be seen that the mixing of fuel gas and air is not sufficient. For this reason, the temperature at the exit is about 1105 ° C, which is about 35 ° C lower than that in the case of turning.

As shown in FIG. 5, it can be seen that the CO concentration is fairly uniform near the center and the wall of the combustion chamber due to the excellent mixing effect, and the CO disappears rapidly as it moves downward. In other words, the value is less than 300ppmv near the center and 35ppmv at the exit.

On the other hand, as shown in Figure 6, it shows that the bias is present in the wake side as compared to the case of the turning. The CO concentration at the outlet is 3000ppmv or more, which shows that the value is about 100 times higher than that in the case of turning.

As such, the swirl flow has the property of very active turbulent mixing of air and fuel. That is, many literatures have reported that it is possible to reduce the fine dust and CO generation with a relatively low heat loss volume as compared to the case without the turning.

As described above, according to a preferred embodiment, the combustion air flowing into the combustion chamber is swirled while forming a spiral trajectory, thereby completely burning due to the ideal mixing with the fuel gas, maximizing the combustion efficiency, and exhausted after combustion. It is to minimize air pollution caused by gas.

In addition, there is an advantage that the fuel can be reduced by maximizing the effective energy of the heat generated by the fuel gas.

Claims (1)

A cyclone-type body that primarily flows combustion air forcibly introduced through an air inlet formed at one side; A fuel gas inlet pipe which is formed to cross the center of the main body and introduces pyrolysis gas generated when the waste tire is burned into a combustion chamber; And Fuel gas flowing linearly through the fuel gas inlet pipe and combustion air passing through the main body are ideally mixed so that the combustion air passing through the main body forms a spiral trajectory so that the combustion gas passes through the main body in a secondary flow. Cyclone burner, characterized in that it comprises a discharge port is formed to guide vanes.