SU1626048A1 - Cap device for spray pipe - Google Patents

Abstract

The invention relates to the combustion of fuel and can be used in heat engineering installations of the power industry, metallurgy, oil refining and chemical industries. The purpose of the invention is to increase the efficiency of gas combustion by stabilizing the flame, turbulizing the resulting mixture and increasing the ignition perimeter. The flare pipe end contains a gas supply pipe 1 with confuser 2, gas supply channels, flame stabilizer 6 and radial nozzles 7. The incoming gas passes confuser 2. One part is washed by flame stabilizer 6 by ejecting air entering through nozzles 7. Another part of the gas goes through the gas feed channels to form a gas-air mixture on the periphery of the tip. 5 hp f-ly, 3 ill.

Description

figure 1

The invention relates to the field of fuel combustion and can be used in heat engineering installations of power generation, metallurgy, oil refining, oil and chemical industries, as well as in other areas related to gas combustion.

The purpose of the invention is to increase the efficiency of gas combustion by stabilizing the flame, the turbulence of the resulting mixture, and the increase in the ignition perimeter.

FIG. 1 shows the flare tip, longitudinal section; in fig. 2 - the same, top view; in fig. 3 - flame stabilizer.

The flare tube end is a gas supply pipe 1, which at the end is made in the form of a confuser 2. On the latter there are vertical cuts 3 with sectors 4 installed in them, which form radially discharged gas supply channels 5 (Fig. 2). Inside the upper part of the gas supply pipe coaxially with a gap to the confusor 2, a flame stabilizer 6 is installed, to which radial nozzles 7 are connected, the peripheral ends of which are connected to the atmosphere.

The flame stabilizer 6 (Fig. 1) is structurally designed as a half, the upper part of which is open, which allows the ejection of air into the central part of the tip.

Radial nozzles 7, which serve to eject air and transfer it into the internal cavity of stabilizer 6, are located below the central, and their cross section decreases from the periphery to the center. The peripheral ends of the radial nozzles 7 are located on the generatrix of confuzere 2 between the vertical cuts 3.

The cap works as follows.

The gas coming from the bottom of the gas supply pipe 1 passes through the confuser 2 and channels 5. In this case, part of the rising gas is washed by the flame stabilizer 6 - one and a half, forming turbulent vortices that eject air coming from the flame stabilizer 6 and the nozzles 7 connected with the atmosphere. Gas turbulent vortices intensify the process of mixing gas and air, forming a gas-air mixture ready for combustion in the center of the tip. The second part of the rising gas comes out of the tip through the gas supply channels 5, entraining nearby layers of atmospheric air, forming a gas-air mixture at the periphery of the tip.

Thus, the combustion of gas occurs in the prepared mixture, both in the center of the confinement and at its periphery, which significantly increases the perimeter of the ignition head.

The use of flame stabilizer 6 in the form of one and a half allows to intensify the process of mixing with low resistance to gas flow.

on the flare, which determines the successful application of this type of flame stabilizer on low and high pressure flares. When designing a high-pressure torch, it is possible to use a flame stabilizer 6 in the form of a bowl (Fig. 3).

This form of flame stabilizer will allow to intensify the process of formation of the gas-air mixture, however, in this case the resistance of the stabilizer increases significantly. In order to effectively supply air to the combustion zone, the radial nozzles 7 are located at an inclination in which the peripheral part is located below the central one, which creates favorable conditions for the ejection of air from the atmospheric layers located well below the combustion zone with the least resistance of the nozzles to the ejected air flow.

The varying cross section of the radial nozzles 7, decreasing from the periphery to the center, allows the ejection of air at the required speed, which is determined by calculation in

depending on the ejection capacity of the tip. The location of the radial nozzles 7 on the generatrix of the confuser 2 of the gas supply pipe 1, between the vertical notches 3, makes it possible to eject air with layers of gases that have the highest velocity, which significantly increases the amount of ejected air, the latter is due to the effective use of the cross section

gas supply pipe 1 and gas supply channels 5.

The invention supplies air to the core of the flame in order to stabilize it and to ensure the most complete combustion, which improves environmental protection by reducing harmful emissions into the atmosphere.

The gas flow turbulization due to the use of a flame stabilizer intensifies the process of formation of an air-gas mixture with high turbulence, the latter can significantly reduce the length of the torch itself, which also improves environmental protection.

The use of a flame stabilizer communicated with the atmosphere in the invention self-regulates the supply of air to the flame core when the torch performance changes.

Formation of the combustion front in the center of the tip increases the ignition perimeter of the entire tip, minimizing environmental pollution by emissions of unburned products in the form of soot, carbon monoxide and hydrocarbons.

Thus, in the invention, due to better gas combustion, an improved environmental protection has been achieved.

Claims (6)

1. Flare pipe end, including a gas supply pipe, at the outlet confused end of which vertical cuts are made with sectors installed in them that form radially diverging gas supply channels, characterized in that, in order to increase the efficiency of gas combustion due to flame stabilization, turbulization the resulting mixture and an increase in the ignition perimeter, it is supplied flame stabilizer in the form of a hollow geometric body, open at the top, installed inside the upper part of the gas supply pipe coaxially with a gap to the confusion with radial nozzles connected to it, the peripheral ends of which are connected to the atmosphere. 2. Head under item 1, characterized in that the flame stabilizer is made in the form of a bowl. 3. Head pop. 1.Distinguishing - the fact that the flame stabilizer is made in the form of one and a half., 4. Head under item 1, characterized in that the radial nozzles are installed obliquely, with the peripheral ends located below the center. 5. A head according to claim 1, characterized in that the radial nozzles are made with a cross section that decreases from the periphery to the center. 6. The head according to claim 1, characterized in that the peripheral ends of the radial nozzles are located on the generatrix of the confuser of the gas supply pipe between the vertical cut-outs. FIG. 2 Fig.Z